huong dan khai thac he thong 2g

B QUC PHNG TP ON VIN THNG QUN I

TI LIU HNG DN KHAI THC H THNG 2G

(Dnh cho i ng K thut Chi nhnh tnh/tp)

LU HNH NI B

H NI, THNG 10 NM 2011

B QUC PHNG TP ON VIN THNG QUN I

TI LIU HNG DN KHAI THC H THNG 2G

(Dnh cho i ng K thut Chi nhnh tnh/tp)

LU HNH NI B

TRUNG TM O TO VIETTEL

CNG TY MNG LI VIETTEL

THM NH

PHNG K THUT TP ON

H NI, THNG 10 NM 2011

TNG GIM C Ngy...thng.. .nm 2011

PH DUYT

MC LC LI NI U........................................................................................................................................ 1 PHN I. THIT B DI NG 2G ERICSSON ................................................................................ 2 CHNG I. T ANG S DNG ..................................................................................................... 2 I. T RBS2216 ..................................................................................................................................... 2 II. Mt s t khc .................................................................................................................................. 12 CHNG II. HNG DN X L LI ........................................................................................ 16 I. Cc li c y ra cnh bo gy nh hng cht lng mng. ........................................................ 16 II. Cc li khng y ra cnh bo nhng gy nh hng n cht lng mng ................................. 24 PHN II. THIT B BTS CA HUAWEI ........................................................................................ 25 CHNG I. T ANG S DNG ................................................................................................... 25 I. T BTS3900 ................................................................................................................................... 25 II. T BTS3012 ................................................................................................................................... 35 CHNG III. HNG DN KHC PHC LI ........................................................................... 45 1. Li BBU CPRI Optical Interface Performance Degraded ............................................................. 45 2. Li BBU CPRI Optical Module Fault ............................................................................................ 47 3. Li BBU CPRI Optical Module or Electrical PortNot Ready ........................................................ 47 4. Li TRX Clock Critical Alarm ....................................................................................................... 49 5. Li TRX Clock Prompt Alarm (TRX Clock Critical Alarm - ID alarm 4184) .............................. 49 6. Li TRX Close HPA Alarm ........................................................................................................... 50 7. Li TRX Communication Alarm ................................................................................................... 51 8. Li TRX Config Mismatch Alarm ................................................................................................. 52 9. TRX DBUS Alarm, level=2 ........................................................................................................... 54 10. TRX DBUS Alarm, level=2 ........................................................................................................... 55 11. Li TRX Hardware Prompt ............................................................................................................ 56 12. Li TRX PA Shutdown .................................................................................................................. 57 13. Li TRX Temperature Abnormal ................................................................................................... 57 14. Li TRX Temperature Too High .................................................................................................... 58 15. Li TRX VSWR ............................................................................................................................. 59 16. Li TRX Voltage ............................................................................................................................ 60 17. Li TRX main clock ...................................................................................................................... 61 18. Li TRX maintenance ................................................................................................................... 61 19. Li TRX power decrease ............................................................................................................... 62 20. Li TRX slave clock...................................................................................................................... 63 21. ALM-4180: Li TRX TypeNot Support Alarm ............................................................................. 64 22. ALM-10764: Temperature Too High Alarm .................................................................................. 64 23. ALM-12804: Boardard Hardware Failure Alarm ........................................................................... 65 24. ALM-12850: Boardard Hardware Indication Fault ........................................................................ 66 25. ALM-5066: Boardard Internal Hardware Abnormal ..................................................................... 66 26. ALM-2170: DBUS Alarm .............................................................................................................. 67 27. ALM-3662: DRU Communication Alarm ..................................................................................... 67 28. ALM-3606: DRU Hardware Alarm ............................................................................................... 68 29. ALM-26200: Boardard Hardware Fault ......................................................................................... 69 30. ALM-21801: GSM Cell Out of Service ......................................................................................... 69 31. ALM-12830 Level 1 VSWR Alarm ............................................................................................... 74 32. TRX Temperature Too High Alarm ............................................................................................... 75

33. TRX Temperature Abnormal Alarm .............................................................................................. 76 34. TRX Software Running Abnormal Alarm, level=2 ....................................................................... 76 35. TRX Receive Abnormal Alarm ...................................................................................................... 77 36. Radio Link Abnormal Alarm ......................................................................................................... 78 37. RF Unit CPRI Interface Error ........................................................................................................ 80 38. RF Unit VSWR Threshold Crossed ............................................................................................... 82 39. ALM-12830 Level 2 VSWR Alarm ............................................................................................... 83 40. LAPD alarm, level=2 ..................................................................................................................... 84 PHN III. THIT B DI NG 2G ALCATEL.............................................................................. 86 CHNG I. T ANG S DNG ................................................................................................... 86 I. T MBI3 ......................................................................................................................................... 86 II. T MBI5 ......................................................................................................................................... 97 III. T MBO2 ....................................................................................................................................... 98 IV. T MBO2E ...................................................................................................................................... 99 CHNG II. HNG DN X L LI ...................................................................................... 101 1. CELL [43] LOSS-OF-ALL-CHAN [3] ........................................................................................ 101 2. RX-TX [10] ANTENNA-VSWR-URGENT [12] ........................................................................ 101 3. RX-TX [10] ANTENNA-VSWR-WARNING [11] ..................................................................... 101 PHN IV. THIT B BTS NOKIA SIEMENS .............................................................................. 103 CHNG I. T ANG S DNG ................................................................................................. 103 I. Gii thiu ...................................................................................................................................... 103 II. Cu to.......................................................................................................................................... 103 III. Cu hnh phn cng thit b ca NSN .......................................................................................... 107 CHNG II. HNG DN X L LI ...................................................................................... 118 I. Cc bc thc hin kim tra x l li .......................................................................................... 118 II. c kt qu v x l li ............................................................................................................... 120 III. M hnh Test thit b ................................................................................................................. 124

1

LI NI U Theo quan im v nh hng ca Tp on vic m bo nn tng kin thc chuyn mn nghip v hon thnh cng vic l mt nhim v ca mi cn b cng nhn vin trong ton Tp on. V vy, m bo ngun ti liu cho vic t o to, tra cu ca i ng K thut Chi nhnh tnh/thnh ph, Trung tm o to Viettel phi hp vi Phng V tuyn - Cng ty Mng li Viettel bin son ti liu Hng dn khai thc h thng 2G, ti liu bao gm 4 phn sau: - Phn I: Thit b di ng 2G Ericsson. - Phn II: Thit b di ng 2G Huawei. - Phn III: Thit b di ng 2G Alcatel. - Phn IV: Thit b di ng 2G Nokia Siemens. Ti liu h thng li cc kin thc c bn v thit b di ng 2G ca cc Vendor mt cch chi tit, d hiu. Hy vng rng, ti liu ny c ngha thit thc cho qu trnh t o to ca cc ng ch. Ti liu cng l ngun thng tin tham kho b ch cho nhng ai quan tm. Trong qu trnh bin son chc chn khng trnh khi nhng thiu st, rt mong nhn c nhng kin ng gp ca cc ng ch Lnh o cc cp v ng nghip ln ti bn sau c hon thin hn. Trn trng cm n! Mi kin ng gp xin gi v: Phng Ti liu - Trung tm o to Viettel. M1 - An Khnh - Hoi c - H Ni Tel: 04.62.65.03.29 0988.888.319. Email: [email protected]

PHN I. THIT B DI NG 2G ERICSSONCHNG I. T

I. T RBS2216 1. Gii thiu v t RBS2216- RBS2216 l mt phin b

(Indoor) v h tr ti a 12 b

Hnh 1. - RBS2216 l t dung l

vi ton b thit b c thchuyn t cng nh c th

- V tr RBS trong h thng GSM:

Hnh 1.

N I. THIT B DI NG 2G ERICSSON CHNG I. T ANG S DNG

i thiu v t RBS2216 t phin bn trong dng RBS2000 ca Ericsson. y l t

i a 12 b thu pht (TRX).

Hnh 1. 1: S t RBS2216 ca Ericsson ng cao (h tr ti a ti 6 DRU). RBS2216

c th thao tc mt trc ca t, thun li trong vi c th t t da vo tng.

ng GSM:

Hnh 1. 2: V tr RBS trong h thng GSM

2

. y l t trong nh

16 c thit k i trong vic vn

3

1.1. Cc tnh nng chnh RBS2216 h tr cc tnh nng sau: - C th c 1, 2 hoc 3 sector trong t. - C th lp co-site cng cc h thng khc: GSM, TDMA, WCDMA s dng

chung antenna (loi antenna h tr). - Thu/pht khng lin tc. - Cc b lc song cng. - iu chnh cng sut ng. - M mt. - EDGE. - Tng dung lng bng cch u TG (Transceiver Group) - Cc cnh bo ngoi. - Nhy tn. - LAPD Concentration v LAPD Multiplexing. - ng b GPS. - H tr cc di tn P-GSM900, E-GSM900, GSM1800. - Phn tp thu. - Cc giao din v truyn dn:

T1 1544 Kbps, 100, vi ng b PCM. E1 2048 Kbps, 75, vi ng b PCM (S dng adapter) E1 2048 Kbps, 120, vi ng b PCM.

- in p cung cp di rng: 200-250V AC. 1.2. c im k thut - Ngun cung cp cho RBS2216: C 3 loi ngun cung cp cho RBS2216 nh sau:

-48 V DC. 220-250V AC. +24V DC khng c DCCU v PSU.

- Kch thc, trng lng Kch thc 1 t RBS2216: Height x width x depth: 950 x 600 x 523 mm. RBS2216 c trng lng 168,6 Kg (y cc thit b), v khung c bn nng

7,6Kg. 2. Cc thit b phn cng c bn 2.1. DRU - Chc nng: X l thu/pht cc sng mang v tuyn. N l giao din gia cc b

thu pht v h thng antenna. DRU c th c cu hnh ch Combined hoc Uncombined.

- S lng trong 1 t: 1-6. - Cng sut tiu th ti a: 500W. - S khi DRU:

- DRU bao gm cc khi chnh sau: Khi n v x l trung tm (CPU): i B x l tn hiu s H thng iu khin v tuy H thng v tuyn (radio syst H thng phn phi v k H thng lc (filter system)

2.2. ACCU (AC Connection Unit- Chc nng: ACCU/DCCU

PSU. - S lng trong 1 t: 0-1.- S khi ACCU:

Hnh 1. 3: S khi DRU i chnh sau:

l trung tm (CPU): iu khin RBS. (DSP system).

n v tuyn (RC system). (radio system). i v kt hp (combiner and distribution system)

(filter system). (AC Connection Unit)/ DCCU (DC Connection Unit)

c nng: ACCU/DCCU kt ni/ngt kt ni v phn b ngu

1.

4

(combiner and distribution system).

ngun AC/DC n

2.3. DXU (Distribution Switch Unit- Cu to v chc nng: DXU

din ti BSC, tng hp v pht cc ch thng nhit ca RBS. DXU c 1 flash card c thkhng cn load phn mtruyn dn. N c th EDGE cho 12TRX.

- S khi ca DXU:

Hnh 1. 4: S khi ACCU Distribution Switch Unit)

c nng: DXU l n v x l trung tm ca RBS. N hp v pht cc cnh bo. DXU iu khin h

a RBS. DXU c 1 flash card c th thay th n mm RBS t BSC. DXU cng cung cp 4 lo

x l c giao din E1 v T1. DXU c ph

5

a RBS. N h tr giao thng ngun v x l li m

p 4 loi giao din n E1 v T1. DXU c phn cng h tr

- DXU bao gm cc khi chnh sau: CPU (Central Processing Unit

memory, CPU, Compact flash card H thng chuyn m

lu lng gia BSC v cc DRU. B iu khin giao di

cng giao din truy Khi cp ngun (Power supply

DXU. H thng nh thi ( Cc khi logic khc (

c in p, o nhi Compact flash card.

Hnh 1. 5: S khi DXU i chnh sau:

Central Processing Unit system) bao gm: I2C controller, RAM, Flash memory, CPU, Compact flash card.

n mch (Communication switch system): Cha BSC v cc DRU.

n giao din truyn dn (Transmission interface controllern dn v b iu khin giao din truyn dn.

Power supply): Phn phi tt c cc loi in

i (Timing system) i logic khc (Miscellaneous logic): C cc chc nng nh h

t Compact flash card.

6

I2C controller, RAM, Flash

a cc b x l

Transmission interface controller): Cha 4 n. p cn thit cho

c nng nh h thng o

- S lng trong 1 t: 1. 2.4. FCU (Fan Control Unit- Chc nng: FCU iu

chng. FCU c gim st b- S lng trong 1 t: 1. 2.5. IDM (Internal Distribution Modul- Chc nng: IDM l m

trong t, mi n v - S lng trong 1 t: 1. 2.6. PSU (Power Suply Unit- C 2 loi version: PSU

48V DC. PSU-AC: Chuyn PSU-DC: Chuyn

- S lng trong 1 t: 0-3.3. Cc cu hnh c bn vi t RBS22163.1. DRU Topology

Hnh 1. 6: DRU Topology khng s

Hnh 1. 7: DRU Topology s

(Fan Control Unit)

u khin cc qut trong RBS bng vic thay c gim st bi DXU.

Internal Distribution Module)

t bng phn phi ngun +24V DC cho cc n vc kt ni ti mt cng tc ng/ngt trn IDM

Power Suply Unit) PSU-AC cho kt ni ti AC mains, PSU-DC cho k

i ngun AC thnh +24V DC. i ngun -48V DC thnh +24V DC.

3. n vi t RBS2216

: DRU Topology khng s dng combiner

: DRU Topology s dng Hybrid combiner

7

c thay i tc ca

n +24V DC cho cc n v khc t trn IDM.

DC cho kt ni n -

3.2. Cc cu hnh RX c bn3.2.1. Cu hnh 2RxDru

3.2.2. Cu hnh 3RxDru

n

Hnh 1. 8: Cu hnh 2RxDru

8

3.2.3. Cu hnh 4RxDru Hnh 1. 9: Cu hnh 3RxDru

9

3.3. Cc cu hnh Tx c bn3.3.1. Cu hnh 1TxDruUncomb

Hnh 1. 10: Cu hnh 4RxDru n

nh 1TxDruUncomb

Hnh 1. 11: 1TxDruUncomb

10

3.3.2. Cu hnh 2TxDruComb

4. Hng dn u ni mt s cu h Hin ti trn mng Viettel chxin trnh by u ni cu hnh 2 v c4.1. Cu hnh 2/2/2

nh 2TxDruComb

Hnh 1. 12: 2TxDruComb t s cu hnh c bn

ng Viettel ch yu dng cu hnh 2 v cu hnh 4. Do u hnh 2 v cu hnh 4.

Hnh 1. 13: Cu hnh 2/2/2

11

u hnh 4. Do , phn ny

12

4.2. Cu hnh 2/4/2

Hnh 1. 14: Cu hnh 2/4/2

4.3. Cu hnh 4/4/4

Hnh 1. 15: Cu hnh 4/4/4

II. Mt s t khc 1. T RBS2206 - Vi RBS 2206 thuc h RBS 2000 do phn ln thit b ging vi RBS 2216.

im khc c bn gia RBS 2206 so vi RBS 2216 l CDU v CXU tch ri: - S t RBS 2206:

13

Hnh 1. 16: S t RBS2206

CXU (Configuration Switch Unit): C nhim v kt ni cho gia CDU v dTRU trong ng thu. CXU thc hin c kh nng m rng cu hnh hoc cu hnh li cho trm m khng cn di chuyn hoc thay th cc cp RX.

CDU (Combining and Distribution Unit): Giao din gia cc b thu pht v h thng anten. CDU thc hin kt hp v phn phi tn hiu pht n cc b thu pht. C 2 loi CDU cho RBS 2206: CDU-G v CDU-F.

2. T RBS2106 - RBS 2106 l loi t thuc h RBS 2000 tuy nhin c im khc bit l loi t ny

l loi t Outdoor (dng bn ngoi tri). Cc thit b bn trong t phn c bn ging vi RBS2216 v RBS2206.

- S t RBS2106:

14

Hnh 1. 17: S tng qut t RBS2106

Hnh 1. 18: Thnh phn chnh ca t RBS2106

3. T RBS 2111 RBS2111 thuc h RBS 2000, tuy nhin khc bit vi cc loi khc, y l loi t phn tn v c dung lng thp, cng sut thp hn RBS2216, RBS2206 v RBS2106. Thit b bao gm MU v 3 RRU. MU kt ni vi mng truyn dn. Mi RRU bao gm 2TRX. Vi RBS2111 c u im lp t nhanh, nh gn, lp t d dng ngoi tri, gia MU v RRU c th ko di n 500m. S cu trc nh sau:

15

Hnh 1. 19: Cc khi chnh ca t RBS2111

16

CHNG II. HNG DN X L LI

I. Cc li c y ra cnh bo gy nh hng cht lng mng. c th kim tra cc li bng cc cch sau: Xem trc tip bng cch gim st qua OSS bng WinFIOL, kim tra ngay ti trm bng cch dng phn mm OMT. - Kim tra qua h thng OSS:

S dng log CDD MO c ci nhn tng qut mc BSC thng k cc trm b li, m li.

Truy cp OSS qua WinFIOL v s dng cc lnh kim tra li trm. Mt s lnh c bn kim tra li trm nh: + RXMFP: MO=RXOTG-TG,FAULTY,SUBORD; kim tra mc TG. + RXMFP:MO=RXOTRX-TG-TRX,FAULTY,SUBORD; kim tra mc

TRX. - Kim tra qua phn mm OMT kt ni trc tip vo trm:

T phn mm OMT sau khi kt ni vo trm, chn Maintenance- Monitor.

Hnh 1. 20: Truy nhp vo mc Moniter

Bng gim st li hin th ra nh sau:

17

Hnh 1. 21: Giao din bng gim st li

Chn i tng cn gim st, chut phi, chn Monitor, hp thoi hin ra nh sau:

Hnh 1. 22: Chn i tng cn gim st

18

Chn tham s cn gim st, click Start Monitor gim st li. Kt qu hin ra:

Hnh 1. 23: Chn tham s cn gim st

Kt qu hin ra m li, hnh ng cn khc phc v cc li lin quan. 1. SO CF I2A:33 - RX diversity lost - Tn li: Li mt phn tp thu - M t: Mt cn bng cng tn hiu gia ng thu A v B c gim st bi

TRU. Li c to ln khi mt hoc vi TRU c bo co v s mt cn bng cng tn hiu t nht l 12dB trong sut 50 pht. iu ny ch ra rng ng thu RX ti mt hoc vi TRU b li. nhy thu cho cc TRU ny b gim khong 3,5 dB.

Ch : Li ny s khng thng bo nu c mt trong cc li sau: SO CF 12A:7 (RXDA), SO CF I2A:11 (TMA), SO CF I2A:34 ( TMA voltage) hoc SO CF I2A:39 (cp RX) xy ra.

19

- Cch sa: Gim st phn tp bng OMT cho mi TRU tm ra cc TRU b nh hng v side (A hoc B) b li. Cc kt qu o gim st ch c ly 5 pht mt ln v th ta s ly mt vi ln thy s thay i. Gi tr o a ra s mt cn bng cng tn hiu (SSI, th hin bng n v dB) trn mi TS. Mt cn bng cng tn hiu SSI bng tn hiu RX trn side A tn hiu trn side B v th nu kt qu + n ch ra rng side A tt hn side B v ngc li. Kim tra tt c cc ng thu RX v cc kt ni, ngoi ra cng kim tra c cc Antenna. Nu mt vi cell b nh hng kt qu c th 2 dy feeder b ln cho nhau. Nu ch mt TRU b nh hng th kt qu phi kim tra cp TRU, CXU v CDU bng cch c gng ri b cc cp, TRUs, v CDU trong t kim tra cc n v b li.

2. SO TRXC I2A:33 - Tn li: Li kt ni trong TRX - Li lin quan: Khng - M t: Li phn cng bn trong TRU - Cch sa: Thay th TRU mi. 3. SO CF I2A:39 - Tn li: RX mt kt ni (RX Cable disconnected) - Li lin quan: AO RX I1B:9 RX mt kt ni - M t: Cp RX b mt kt ni ( v d: RX u vo CDU, ..). Kim tra RU kim

tra phn b li. - Cch sa: Kt ni li hoc thay th cp RX b mt kt ni. 4. AO TX I1B:4 VSWR limits exceeded - Tn li: Vt qu gii hn h s sng ng ca antenna pht TX. - Li lin quan: SO CF I2A:8 - vt qu gii hn h s sng ng, SO CF RU:40

Antenna - M t: Khi gi tr VSWR ti u ra CDU vt qu gii hn lp 2 c nh ngha

trong load IDB bi OMT (gi tr Viettel ang t: 1,5), Li SO CF I2A:8 to ln vi RU gn vi antenna. Khi VSWR vt qu gii hn lp 1 ( gi tr: 1,8), li: AO TX 1B:4 c to ln trn TX.

- Cc nguyn nhn c th: Li IDB, li CDU, li TX ca antenna/feeder hoc khng kt ni uc, cp Pfwd/Prefl v trong mt s trng hp do b thu trong TRU/CU.

- Cch sa: Ci t li IDB. Dng OMT gim st cc li, kim tra cc TX, RX, h thng feeder, anten

xc nh thit b b li. Nu do h thng anten, feeder cn s dng my Bird xc nh im li khc phc.

Thay th cc thit b li sau khi c gng khc phc vn cha ht li. 5. SO CF I2A:8 - Tn li: Vt qu gii hn h s sng ng VSWR - Cc li lin quan:

AO TX I1B:1 CDU/Combiner vt qu gii hn VSWR AO TX I1B:4 Vt qu VSWR ca antenna pht TX AO TX I2A:0 TX diversity Faulty

20

- M t: Gi tr VSWR ti u ra ca TRU hoc CDU vt qu gi tr lp 2 (v cng c th l gii hn lp 1 nh li AO TX I1B:1 hoc AO TX I1B:4 nh trn) Nu RU ch ra ti CDU, VSWR ti u ra TRU vt qu gii hn c nh

ngha trong IDB. Nu RU ch ra ti Antenna, sau VSWR ti u ra CDU vt qu gii

hn c nh ngha trong IDB. Nu vt qu gii hn lp 1, lin quan n li AO TX I1B:4 v TX s b blocked.

- Cch sa: Nu xy ra CDU hoc CU:

+ Kim tra cp TX gia TRU v CDU/CU. + Tt, bt CDU/CU. + Reset TRU. + Thay th CDU/CU. + Thay th TRU.

Nu li lin quan n h thng Antenna: + Kim tra cc gi tr VSWR c khai bo trong IDB. + Kim tra cp TX gia TRU v CDU/CU. + Kim tra TX cp, feeder, cc loi cp kt ni trong v ngoi trm, antenna + Tt, bt CDU/FU. + Reset TRU.

6. SO TRXC I2A:0 - Tn li: Cp RX khng kt ni - Li lin quan: AO RX I1B:9 cp RX khng kt ni. - M t: Cp RX gia TRU v CXU/CDU b mt kt ni. - Cch khc phc:

Kim tra cp RX ti cnh bo TRU. Kt ni li cp RX. Thay th cp RX.

7. SO TRXC I2A:34 - Tn Li: Vt qu gii hn VSWR - Li lin quan: Khng - M t: Li phn cng bn trong TRU - Hnh ng: Thay th TRU. 8. SO CF I2A:23 - Tn li: Gim kh nng Climate (nhit ) - M t: H thng nhit khng hot ng tt. Kim tra SO CF RU tm ra phn

climate c vn . - L do c th:

Qut hoc FCU ( n v iu khin qut ) b li. Li EPC bus

- Hnh ng: Kim tra li qut v FCU, EPC bus.

21

9. SO CF I2A:24 - Tn li: Li phn cng - Li lin quan:

AO TX I1B:18 - li phn cng CU/CDU AO TX I1B:19 - li load/start phn mm CU/CDU AO TX I1B:21 - li vng CU/CDU AO TX I1B:23 - CU/CDU reset, power on AO TX I1B:25 - CU/CDU reset, watchdog AO TX I1B:26 - CU/CDU fine tunning fault

- M t: Li xy ra bn trong CDU, DXU hoc OVP. Nhn SO CF RU tm ra n v b li.

- L do c th: Theo nguyn nhn ca cc li lin quan - Hnh ng: Nu li xy ra km theo RU:0, nhng hnh ng sau c th khc phc

li: Reset DXU Thay th DXU

10. SO CF I2A:25 - Tn li: Loadfile missing in DXU or ECU - Li lin quan: SO TRXC I2A:17- Loadfile missing in TRU - M t: Li phn mm trong b nh (flash) DXU hoc ECU. - L do c th: C th do s thay i chc nng hoc kt ni khng ng. - Hnh ng:

Ci t li IDB vi phn mm tng thch mi nht. Thay th Flash card trong DXU

11. SO CF I2A:41 - Tn li: Mt thng tin ti TRU. - M t: DXU khng th lin lc trn Y link ti 1 hoc 1 vi TRU. - L do c th:

Li TRU hoc TRU b tt. (iu ny c th xy ra khi nh ngha nhiu TRU trong IDB hn s TRU thc t ti trm. C th sa li ny bng cch sa i IDB trong OMT).

Li Y link. - Hnh ng: Cc bc sau ch ra cch khc phc li:

Kim tra li nh ngha cc TRU trong IDB vi cc TRU hin c ti trm. Thay i, ci t li IDB.

Kim tra cp Y-Link gia DXU v backplane/TRU xem c kt ni ng v hot ng ng.

Reset TRU mt thng tin vi DXU Reset DXU Thay th TRU mt thng tin vi DXU. Thay th DXU.

22

Thay th DXU/ECU backplane Thay th TRU backplane.

12. SO CF I2A:43 - Tn li: Cu hnh bn trong b hng - Cc li lin quan:

SO CF I2A:19 - Power system in stand-alone mode. SO CF I2A:36 - RU database corrupted.

- M t: Mt hoc mt vi h thng con trong phn mm ECU b hng cu hnh bn trong ca chng. ECU s khng th hot ng tt nht.

- L do c th: Phn mm ci t v phn cng khng tng thch vi nhau, c s d liu ECU b hng, c mt s vn thng tin trn bus ni b.

- Hnh ng: Kim tra tt c cc kt ni. Ci t li IDB v reset li DXU. Nu nhng hnh ng trn vn khng khc phc c, thay th ECU.

13. SO CF I2A:53 - Tn li: Phn cng v d liu IDB khng tng thch vi nhau. - Li lin quan: SO CF RU:34- IDB - M t: Phn cng ti trm v d liu khai bo trong IDB khng tng thch vi

nhau, v d nh s PSU. - Hnh ng:

Kim tra tt c cc kt ni ca EPC bus. Kim tra phn cng ti trm v d liu khai bo trong IDB, ci t li IDB cho

trm theo ng vi thc t. Reset ECU. Reset DXU.

14. SO CF I2A:52 - Tn li: Mt thng tin/ gim st CXU. - Li lin quan:

SO CF RU:54- IOM bus. AO RX I2A:0- Li thng tin/ gim st CXU.

- M t: DXU mt thng tin vi CXU. - Hnh ng:

Kim tra IOM bus c kt ni ng vi CXU. Tt, bt CXU. Reset DXU. Thay th CXU.

15. SO CF I2A:57 - Tn li: Mt cn bng ng thu (RX) - Li lin quan:

AO RX I2A:5- RX Path A imbalance AO RX I2A:6- RX Path B imbalance AO RX I2A:7- RX Path C imbalance

23

AO RX I2A:8- RX Path D imbalance AO TX I1B:35- RX Path imbalance SO CF RU:40- Antenna

- M t: Li ny xy ra nu c s khc bit v cng tn hiu gia 2 anten trong

cng mt h thng anten vt qu gii hn c nh ngha trong OMT (Define RX Path Imbalance Parameters). Nu vt qu gii hn c nh ngha trong class 1, li lin quan AO TX I1B:35 s sinh ra v TX s khng pht c.

Vic gim st li ny da trn vic o c trong mt khong thi gian di, do li ny s khng ht ngay lp tc sau khi khc phc, do khc phc li cn phi c kim tra li.

Khi thc hin cc hnh ng khc phc li, reset TRU cc nguyn nhn gy li kt thc ngay lp tc.

Theo di, gim st nu li vn khng c khc phc, li s c bo co li khi c t nht s ti thiu cc mu c tp hp. S ti thiu cc mu th c nh ngha bi OMT ( Define RX Path Imbalance Parameters).

- Hnh ng: khc phc li c th theo mt s ch dn sau: Kim tra gi tr gii hn RX Path trong OMT Kim tra cc cp TX, feeder, cc cp kt ni bn ngoi v bn trong t, anten. Reset TRU. Xem hnh ng khc phc ca cc li lin quan.

16. AO RX I2A:5 - Tn li: Mt cn bng ng thu A - Li lin quan:

SO CF I2A:57- RX Path imbalance AO TX I1B:35- RX Path imbalance SO CF RU:40- Antenna

- M t: Xem m t cc li lin quan - Hnh ng: Xem cc hnh ng khc phc cc li lin quan nh I2A:57 17. AO RX I2A:6 - Tn li: Mt cn bng ng thu B - Li lin quan:

SO CF I2A:57- RX Path imbalance AO TX I1B:35- RX Path imbalance SO CF RU:40- Antenna

- M t: Xem m t cc li lin quan - Hnh ng: Xem cc hnh ng khc phc cc li lin quan nh I2A:57 18. SO TRXC I2A:5 - Tn li: Li thng tin RX. - Li lin quan:

24

SO TRXC RU:0 TRU, dTRU, DRU or RRU. AO RX I1B:7 RX communication fault

- M t: Li thng tin bn trong RX. - Hnh ng:

Reset TRU Thay th TRU

19. SO TRXC I2A:6 - Tn li: Li thng tin TX. - Li lin quan:

SO TRXC RU:0 TRU, dTRU, DRU or RRU. AO TX I1B:10- TX communication fault AO TX I2A:0 TX Diversity fault

- M t: Li thng tin bn trong TX. - Hnh ng:

Reset TRU Thay th TRU.

II. Cc li khng y ra cnh bo nhng gy nh hng n cht lng mng 1. S suy gim cht lng truyn dn - S suy gim cht lng mng mt cch t ngt, c th th hin qua s cuc rt

TCH Drop due to Suddenly t ngt tng mnh so vi bnh thng. S suy gim cht lng mng ny khng km theo cnh bo t h thng. Tuy nhin, c th kim tra cht lng lung truyn dn m bo lung khng b trt khung bng lnh: DTQUP:DIP=DIP ID; S suy gim cht lng th hin s SLIP ln.

- Cch khc phc: Bo b phn truyn dn kim tra cht lng lung truyn dn, xc nh li

truyn dn ti v tr no phi hp x l. Sau khi khc phc, theo di KPI m bo li c khc phc hay cha.

2. Li card DRU, dTRU - Nguyn nhn: Cell c KPI suy gim t ngt (rt do other reason) v khng c bt

k cnh bo no c ch ra t h thng. iu ny c th do li card hoc timeslot cn phi c reset hoc phi thay th nu gii php reset khng hiu qu. C th kim tra bng vic gim st counter CONERRCNT (cc kt ni b kt thc mt cch bt thng) qua lnh RXMFP kim tra mc TRX hay mc TS.

- Cch khc phc: Reset mm ti u BSC.

25

PHN II. THIT B BTS CA HUAWEI CHNG I. T ANG S DNG

I. T BTS3900 1. Gii thiu v BTS3900

BTS3900 l th h th 4 ca BTS indoor c pht trin bi Huawei. BTS 3900 bao gm 2 thnh phn chnh: BBU v DRFU. So vi cc th h BTS trc , BTS3900 c cu trc n gin hn v tch hp cao hn. 1.1. c im BTS3900 gm cc c im chnh sau: - c pht trin trn nn tng ca cc h thng BTS c nn c tnh k tha t 2G

ln 3G. - BTS3900 h tr giao din Abis IP/FE phn cng v c th cho php s dng Abis

over IP thng qua vic nng cp phn mm. - Bng vic chia s BBU (n v trung tm x l), BTS3900 gim thiu ti a

khng gian tha ca phn cng v gim gi thnh sn phm. - BTS3900 h tr nhiu bng tn nh: P-GSM 900, E-GSM 900 v DCS 1800. - H tr pht phn tp v Power Boardost Transmitter. - H tr thu phn tp 2 anten v 4 anten nng cao hiu qu ng uplink. - H tr GPRS v E-GPRS. - H tr nhiu dng topo mng nh hnh sao, cy, chain, ring v hybrid. - H tr cc thut ton m ha v gii m ha A5/3, A5/2, A5/1. - Mt t n BTS3900 h tr ln ti 12 TRXs vi cu hnh S4/4/4. 1.2. Cc tiu chun k thut - Bng tn v cng sut u ra ca dRFU:

Tn s lm vic

Di tn Ch lm vic Cng sut u ra (GMSK/8-PSK)

900 MHz

P-GSM: - TX: 935-960 MHz - RX: 890-915 MHz E-GSM: - TX: 925-960 MHz - RX: 880-915 MHz

Khng kt hp 45W/30W

Kt hp 20W/14W

PBT 71W/47W

1800 MHz - TX: 1805-1880 MHz - RX: 1710-1785 MHz

Khng kt hp 40W/26W

Kt hp 18W/12W

PBT 63W/42W

26

- nhy thu:

Ch phn tp thu Nhy thu tnh (gi tr thng thng)

Thu c lp - 113dBm

Phn tp thu 2 ng - 116 dBm

Phn tp thu 4 ng - 118,5 dBm

- Kch thc:

Loi cu hnh Rng (mm) Su (mm) Cao (mm)

Cabinet 600 450 900

Base 600 420 40

- Trng lng:

Loi cu hnh Trng lng (kg)

Cabinet rng 57 (bao gm: Cc module cung cp ngun, cp v cc qut. Khng bao gm BBU v cc RFU)

Cu hnh y 132 (DRFU hoc GRFU: 12 kg/pcs)

- u vo ngun:

Loi in p in p chun Di in p hot ng

- 48V DC - 48V DC - 38,4V DC n 57V DC

+ 24V DC + 24V DC + 21,6V DC n + 29V DC

220V AC 220V AC 176V AC n 290V AC

110V AC 110V AC 90V AC n 135V AC

- Cng sut tiu th:

Cu hnh Cng sut ra

(W)

Cng sut tiu th thng

thng (W)

Cng sut tiu th cc i

(W)

900 MHz S2/2/2 45 750 1050

S4/4/4 20 1140 2000

1800 MHz S2/2/2 40 740 1030

S4/4/4 18 1130 1960

1.3. Cu trc phn cng t BTS3900 Cu trc ca BTS3900 c cho nh hnh di y.

27

Hnh 2. 1: Cu trc BTS3900

- (4) BBU (BaseBand Unit): c s dng cho vic x l tn hiu bng c s v cho php tng tc gia BTS v BSC.

- (1) DRFU (Double Radio Filter Unit): Thc hin iu ch, gii iu ch gia tn hiu bng c s v tn hiu RF; x l d liu; kt hp v phn chia cc tn hiu.

- (3) GTMA: B iu khin TMA & Antenna. - (5) DCDU: B phn phi ngun. - (2) Khay qut: Lm mt cho cc thit b trong t 1.4. Cu trc logic ca BTS3900 Cu trc logic ca BTS3900 c cho nh hnh di y:

Hnh 2. 2: Cu trc logic ca BTS3900

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2. Chi tit phn cng ca BTS3900 (-48V DC) - T BTS3900 s dng ngun cung cp ngoi l -48V DC, c th cung cp cho 1 t

hay l 1 dy t BTS3900. - T BTS3900 -48V bao gm cc phn cng sau: DRFU, BBU, GATM, DCDU-01

v qut.

Hnh 2. 3: Chi tit phn cng ca BTS3900 (loi -48V DC)

2.1. Khi BBU3900

- Cng sut tiu th ca BBU l 35W. - Trng lng ca BBU nh hn 12Kg. - Mi BBU3900 h tr c ti a 36 TRX

v 12 Cells. - BBU3900 bao gm cc board BSBC,

UEIU, GTMU v UELP. Mt module BBU3900 bao gm UBFA v UPEU.

29

Hnh 2. 4: S khi ca BBU

2.1.1. BSBC (Universal BBU Subrack Backplane type C (2U)) BSBC l thnh phn sau ca BBU, cung cp 8 khe cho cm boardard, 2 khe cho power v 1 khe cho qut (minh ha nh hnh v).

Hnh 2. 5: Backplane ca BBU

2.1.2. Boardard GTMU (GSM Time & Management Unit for BBU) - GTMU c t v tr khe th 5,6 v 7. - GTMU c chc nng iu khin v qun l ton b BTS, n cung cp cc giao

din lin quan ti ng h tham chiu, ngun cung cp, OM v thu thp cc cnh bo ngoi, c th: iu khin, duy tr hot ng ca BTS. H tr qun l li, cu hnh, bo mt cho BTS. Gim st khi qut v khi ngun. Phn phi v qun l tn hiu xung ng h. Cung cp u vo ng h cho vic kim th (testing). Cung cp cc cng Ethernet cho cc thit b u cui vn hnh.

30

H tr 4 u vo E1. Cung cp cng CPRI cho vic giao tip vi RRU.

Hnh 2. 6: Boardard GTMU

2.1.3. Boardard UBFA ( The Universal BBU Fan Unit type A 2U) - UBFA giao tip vi GTMU trao i cc cnh bo nhit , iu khin tc

qut v thng bo cc cnh bo.

Hnh 2. 7: Boardard UBFA

2.1.4. Boardard UPEU (The Universal power and Environment interface Unit type-A) UPEU thc hin cc chc nng nh: - UPEU chuyn i -48V DC/+24V DC sang +12 V DC - Cung cp bo v kt ni d phng cho connector cp ngun - Cung cp 04 port: 02 port vi mi port pht 1 tn hiu RS485 v 2 port khc vi

mi port pht 4 tn hiu dry contact.

Hnh 2. 8: Boardard UPEU

5.1.5. Boardard UELP ( The Universal E1/T1 lightening protection Unit) - UELP cung cp bo v st cho 4 ng tn hiu E1/T1.

Hnh 2. 9: Boardard UELP

2.1.6. Boardard UEIU - UEIU l boardcard giao tip mi trng ca BBU trao i cc cnh bo nhit

, iu khin tc qut v thng bo cc cnh bo.

31

- UEIU l boardard ty chn v ch c dng khi cn dng nhiu port.

Ch : - Thit lp DIP switch cho boardard GTMU v UELP

Trc khi lp t BBU, cn phi thit lp DIP switch cho GTMU v UELP. GTMU c 5 DIP switch, 4 DIP c s dng - 1 DIP (S3) dnh cho d phng.

Mi DIP switch c 4 bit. UELP c 1 DIP switch, c s dng cho set tr khng cho E1/T1.

- S dng cp lung E1- 120 Ohm

Board DIP Switch Trng thi DIP

1 2 3 4

GTMU S1 OFF ON OFF OFF

S2 OFF OFF OFF OFF

UELP S1 OFF OFF OFF OFF

V d thit lp DIP switch cho GTMU i vi lung E1 - 120 Ohm

Hnh 2. 10: V d v thit lp DIP switch

2.2. Khi DRFU - Mt DRFU cung cp 2 TRX. - DRFU thc hin iu ch v gii iu ch gia tn hiu bng gc v tn hiu RF,

x l d liu, kt ni v phn chia tn hiu. - Thc hin iu khin cng sut

32

- Pht hin t s sng ng - Cu trc ca DRFU nh sau:

Hnh 2. 11: Cu trc khi DRFU

Khi giao din tc cao (high-speed interface unit): Truyn tn hiu nhn c t BBU sang khi x l tn hiu (signal processing unit) v ngc li.

Khi x l tn hiu (signal processing unit): Bao gm 2 knh RX ng ln v 2 knh TX ng xung.

B khuch i cng sut (power amplifier): Khuch i tn hiu RF cng sut thp t khi x l tn hiu.

Khi song cng kp (dual duplexer): + Ghp tn hiu RX v TX. + Kt hp tn hiu RX v TX chng dng chung trn cng knh anten. + Lc tn hiu RX v TX.

2.3. Khi DCDU - DCDU bao gm cc chc nng sau:

Tip nhn ngun vo -48V DC. Phn phi ngun -48V DC cho BBU, RFU, khi qut v nhng thit b bn

trong t. Cung cp bo v qu p.

Hnh 2. 12: Khi DCCU-01

33

- Cc bc u ni ngun cho BTS

- Cc loi cp ni cho ngun

S cp M t S lng

R1-R12 RF Jumpers 12

P1-P2 Cp u ni ngun ngoi (-48 V) 2

P3-P8 Cp ngun ni gia DCDU v DRFUs 6

P9 Cp ngun ni gia DCDU v Fan Boardx 1

P10 Cp ngun ni gia DCDU v BBU 1

P11-P12 D phng 2

S1-S6 Cp tn hiu CPRI ni gia BBU v DRFU 6

S7 Cp lung E1 ca BBU. 1

S8 Cp tn hiu gim st ca DCDU 1

S9 Cp tn hiu gim st ca Fan Boardx 1

S10 Cp E1/T1 ca BBU 1

2.4. Khi GATM (GSM anten and TMA control)- GATM l khi ty chn.- GATM c cc chc nng chnh:

iu khin RET anten. Cung cp ngun cho TMA Bo co cc cnh bo tn hi

Hnh 2. 13: S u ni dy

GATM (GSM anten and TMA control) n.

nng chnh: n RET anten.

n cho TMA nh bo tn hiu iu khin RET.

Hnh 2. 14: Khi GATM

34

35

2.5. Khi FAN

- c iu khin bi b x l trung tm - C chc nng thng gi v gim nng cho t.

C cm bin nhit Dng quay qut khi nhit xung quanh thp.

II. T BTS3012 1. Gii thiu v BTS3012 1.1. c im

BTS3012 c cc c im chnh sau y: - Mt t BTS3012 h tr 12TRX v multiple cabinets c th h tr 36TRX. - H tr PBT - H tr phn tp pht v phn tp thu 4 ng. - H tr cc mode truyn: E1, T1, STM-1, viba, v tinh. 1.2. Cc ch tiu k thut - Bng tn:

Bng tn Di th Di pht

Bng I (900 MHz) 1920-1980 MHz 921-960 MHz

Bng II (1800 MHz) 1710-1785 MHz 1805-1880 MHz

Bng III (800 MHz) 824-849 MHz 869-894 MHz

Bng IV (1900 MHz) 1850-1910 MHz 1930-1990 MHz

- Cng sut:

Ch iu ch Bypass Cng sut u ra

(vi chc nng PBT) Mode 1 Mode 2

GMSK 40 W (45,00 dBm) 60 W (46,78 dBm) 100 W (50,00 dBm)

8-PSK 40 W (45,00 dBm) 40 W (45,00 dBm) 60 W (46,78 dBm)

- nhy thu:

Loi knh nhy thu

TCH/FS - 112,5 dBm (gi tr thng thng nhit bnh thng)

Khc Tt hn nhng yu cu c quy nh trong cc giao thc TS05.05 ca 3GPP

36

- Kch thc:

Mc Rng (mm) Su (mm) Cao (mm)

Cabinet 600 450 1600

Cabinet + top subrack 600 450 1680

Cabinet + top subrack + base 600 450 1750

- Trng lng:

Loi cu hnh Trng lng cabinet (kg)

Cu hnh thng thng Cabinet rng (bao gm cc board ti cc subrack chung)

120

Cu hnh y

Cu hnh y (S4/4/4) 200

Cu hnh y (Cu hnh cell S4/4/4 bao gm module truyn dn v cc DCOM)

220

- u vo ngun:

Loi ngun Gi tr chun Di hot ng

- 48V DC - 48V DC -40V DC n 60V DC

Ch : BTS3012 cng h tr cc u vo ngun 110V AC, 220V AC, +24V DC. - Cng sut tiu th:

37

1.3. Cu trc phn cng t BTS3012 Hnh v di y minh ha cu trc ca BTS3012.

Hnh 2. 15: Cu trc phn cng t BTS3012

38

1.4. Cu trc logic ca BTS3012

Hnh 2. 16: Cu trc logic ca t BTS3012

2. Chi tit phn cng ca BTS3012 2.1. DTMU - iu khin v qun l ton b BTS. - H tr qun l li, cu hnh, thc thi v bo mt cho BTS - Ti phn mm vo t BTS - Cung cp d phng cho cho port E1 v n v iu khin chnh - Qun l clock access v cung cp backup nng cho clock units - H tr 8 routes ca u vo cnh bo s (digital alarm) - H tr 4 routes cho u vo tn hiu iu khin s m rng - Gim st boardard iu khin qut v module ngun - DTMU gm 3 module:

BIU (BTS Interface Unit Khi giao din BTS) MCU (Main Control Unit Khi iu khin chnh) MCK (Main Clock Boardard Boardard ng h chnh)

39

Hnh 2. 17: S thnh phn chc nng ca DTMU

2.2. DCCU

S kt ni logic S thnh phn chc nng

Hnh 2. 18: Cc s m t DCCU DCCU thc hin lc EMI cho ngun vo -48VDC v cp li cho cc card khc trn Common Subrack. Ngoi ra, n cn thc hin chuyn i tn hiu truyn t DCMB ti DCCU, FAN Subrack v Cabinet Top Access 2.3. DCSU DCSU cung cp cc DIP switch cu hnh cho cc card khc trong cng subrack.


Hnh 2. 19: Cc s m t DCSU

40

2.4. DEMU DEMU c t trn common subrack. N cung cp 32 knh logic Boardolean u vo, 4-knh tng t (analog) u vo v 6-knh Boardolean u ra. DEMU i theo cp vi DMLC trn nh t my.


Hnh 2. 20: Cc s m t DEMU 2.5. DATU - iu khin RET anten - Feeding TMA - Xut cnh bo lin quan n iu khin RET anten - Gim st feed power 2.6. DTRB DTRB l backplane ca DTRU subrack. DTRB c 6 khe cho 6 DTRU. 2.7. DTRU - DTRU c t trong DTRU subrack. Mt module DTRU c th x l 2 sng mang.


Hnh 2. 21: Cc s m t DTRU

41

- DTRU c 3 module chc nng: Khi x l bng gc v RF - DTRU Baseband and RF Unit (DBRU) Khi khuych i - DTRU Power Amplifier Unit (DPAU) Khi cp ngun - DTRU Power Supply Unit (DTPS)

- DBRU thc hin iu ch/gii iu ch, x l d liu v kt hp/phn chia gia tn hiu bng gc v tn hiu RF.

- DPAU thc hin khuych i tn hiu Tx n mc yu cu, ng thi tch tn hiu cng sut u ra kim tra loop-back v xc nh mc cng sut. o nhit ca b khuych i cng sut. H tr pht phn tp v PBT.

- DTPS cp ngun cho DTRU. DTPS i t ngun 48 VDC thnh ngun +28 VDC cp cho DPAU.

2.8. DDPU - DDPU truyn tn hiu a knh RF t DTRU ti antenna thng qua b duplex.

ng thi n cng gi tn hiu t antenna v DRTU sau khi c khuych i tn hiu bi duplexer.


Hnh 2. 22: Cc s m t DDPU - DDPU bao gm b ghp knh kp cho PGSM (Dual-Duplexer for PGSM - DDUP)

v b iu khin v khuych i tp m thp (Dual LNA & Control Unit for the DTRU BTS DDLC). DDPU thc hin: Gi tn hiu RF a knh t DTRU ti antenna Gi tn hiu antenna ti DTRU sau khi khuych i v phn chia Pht hin cnh bo VSWR anten v feeder iu khin b khuych i tp m thp H tr chng st cm ng qua cng ANT

2.9. DCOM - DCOM kt hp hai sng mang thnh mt knh. DCOM s dng khi u cu hnh

kt hp.

42


Hnh 2. 23: Cc s m t DCOM - DCOM kt hp hai knh tn hiu Tx ca DTRU v gi chng n DDPU. - DFCU v DFCB l ty chn. 2.10. Fan boardx - Gim st nhit ca air inlet ca t v nhit ca Fan subrack v iu chnh tc

qut - Giao tip vi DTMU iu chnh tc ca qut v xut cnh bo. 2.11. DELC DELC c th lp trong cc khe t 0 n 2 cabinet top subrack ging nh DMLC. Ti a 3 DELC, h tr bo v cho 12 ng tn hiu E1 trc khi truyn n DCCU.


Hnh 2. 24: Cc s m t DELC 2.12. DMLC DMLC c th lp trong cc khe t 0 n 2 cabinet top subrack ging nh DELC. Mt card DMLC h tr 32 ng cnh bo Boardolean u vo, 6 ng cnh bo Boardolean u ra, 4 ng cnh bo analog u ra v cc tn hiu u vo cho cm bin bo khi/bo nc/ t nhp/ hng ngoi/ m/nhit .

43


Hnh 2. 25: Cc s m t DMLC 2.13. DSAC - DSAC ch c th lp khe s 3 ca cabinet top subrack.


Hnh 2. 26: Cc s m t DSAC - DSAC h tr:

06 cnh bo Boardolean u vo v 04 cnh bo u ra ca t my chnh 02 ng CBUS3 u ra 02 ng vo gim st cnh bo li b chng st DC Cng bo v ng ng b BITS u vo

2.14. DCMB DCMB l backplane ca common subrack. DCMB c s kt ni logic nh sau:

Hnh 2. 27: S kt ni logic ca DCMB

44

2.15. DCTB

S kt ni logic ca DCTB S thnh phn chc nng ca DCTB

Hnh 2. 28: Cc s m t DCTB

45

CHNG III. HNG DN KHC PHC LI

Vo M2000MonitorBrowse Alarm list xem li. 1. Li BBU CPRI Optical Interface Performance Degraded 1.1. M t - Alarm ny xut hin khi kh nng thc hin ca module quang cng CPRI b suy

gim nghim trng. 1.2. nh hng n h thng - Nghim trng: Khi kh nng thc hin ca module quang b suy gim nghim

trng, cht lng dch v sng mang trn khi RF truyn trn CPRI cng b suy gim nghim trng, thm ch cc dch v ang c truyn trn khi RF mc thp hn c th b gin on.

- t nghim trng: Khi kh nng thc hin ca module quang b suy gim mt mc nht nh, cht lng dch v sng mang trn khi RF truyn trn CPRI cng b suy gim.

1.3. Nguyn nhn - Module quang hoc connector ca BBU c lp t khng hp l. Hoc module

quang qu c. - Connector quang trn cng CPRI ca BBU b bn. - Module quang trn cng CPRI ca BBU khng c h tr bi BBU, gii hn bi

cc loi (n mode hoc a mode) v tc . - Module quang hoc connector ca khi RF mc thp hn lp t khng hp l.

Hoc module quang qu c. - Module quang ca khi RF mc thp hn b bn. - Module quang cng CPRI ca khi RF mc thp hn khng c h tr bi

khi RF, gii hn bi cc loi (n mode hoc a mode) v tc - Cp quang gia BBU v khi RF mc thp hn b cong, mo m, hoc qu c.

Hoc chiu di ca cp quang vt qu 40km dn n suy hao ln ca tn hiu quang.

1.4. Cch khc phc - Bc 1. Kim tra cng CPRI ca BBU trong trm

a. Tho v lp t li module quang v connector ca cng CPRI ca BBU b li + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc b.

b. Tho connector ca module quang. Lm sch bi cn nguyn cht. Sau , lp t li connector vo module quang. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc c.

46

c. Kim tra v tr module quang cng CPRI c h tr bi BBU, phn loi (n mode hoc a mode) v tc (1.25 Gbit/s hoc 2.5 Gbit/s). + Yes Module quang c h tr. Chuyn n bc e. + No Module quang khng c h tr. Chuyn n bc d.

d. Chn module quang c h tr bi BBU. e. Thay th module quang

+ Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc 2.

- Bc 2. Kim tra cng CPRI ca khi RF mc thp hn trong trm a. Tho v lp t li module quang v connector ca cng CPRI ca khi RF.

+ Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc b.

b. Tho connector ca module quang. Lm sch bi cn nguyn cht. Sau , lp t li connector vo module quang. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc c.

c. Kim tra v tr module quang cng CPRI c h tr bi khi RF, phn loi (n mode hoc a mode) v tc (1.25 Gbit/s hoc 2.5 Gbit/s). + Yes Module quang c h tr. Chuyn n bc e. + No Module quang khng c h tr. Chuyn n bc d.

d. Chn module quang c h tr bi khi RF. e. Thay th module quang.

+ Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc 2.

- Bc 3. Kim tra kt ni quang trong trm a. Kim tra kt ni quang gia BBU v khi RF mc thp hn. X l cc kt

ni quang khng hp l, nh b cong, b mo m. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc b.

b. Kim tra chiu di ca ng quang gia BBU v khi RF mc thp hn. Nu chiu di ln hn 40km, thm im chuyn tip hoc s dng khi RF ni tng nh im chuyn tip quang. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc c.

c. Thay th cp quang gia BBU v khi RF. + Yes Module quang c h tr. Chuyn n bc e. + No Module quang khng c h tr. Lin h vi hi ng k s chnh

v tuyn (email: [email protected])

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2. Li BBU CPRI Optical Module Fault 2.1. M t - Alarm ny xut hin khi module quang cng CPRI b li. 2.2. nh hng n h thng - Warning: Thng tin v module quang khng th nhn c. 2.3. Nguyn nhn - Module quang cng CPRI b li. 2.4. Cch khc phc - Bc 1. Kim tra cnh bo lin quan trn M2000

a. Kim tra cnh bo lin quan trn boardard giao tip ca BBU trn M2000. + Yes Tn ti cnh bo. Chuyn n bc b. + No Khng tn ti cnh bo. Chuyn n bc 2.

b. Xo cnh bo lin quan tu thuc vo xut x l thch ng. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc 2.

- Bc 2. Tho v lp li module quang trong trm. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 3.

- Bc 3. Thay th module quang Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 3. Li BBU CPRI Optical Module or Electrical PortNot Ready 3.1. M t - Alarm ny xut hin khi module quang cng CPRI ca BBU khng c v tr

hoc s kt ni cp trn module quang CPRI hoc port in cha hon thnh. 3.2. nh hng n h thng - Nghim trng: Trong topo chain, ng CPRI ca khi RF mc thp hn khng

c kt ni. Dch v truyn trn khi RF b ngt. Trong topo ring, tin cy ca ng CPRI gim. Trong trng hp ny, ng CPRI active ca khi RF mc thp hn c chuyn qua ng CPRI standby. Trong trng hp ca mt ng hot ring, dch v ang truyn khng b nh hng. Trong trng hp ca mt ng cold ring, dch v ang truyn s b ngt tm thi.

3.3. Nguyn nhn - Chain/ring RRU tha c cu hnh? - Module quang trn cng CPRI khng c v tr hoc s kt ni cp trn module

quang CPRI hoc port in cha hon thnh. - Module quang trn cng CPRI ca BBU b li, hoc cp c kt ni n module

quang CPRI hoc port in b li. - Mu ni trn cng CPRI ca BBU b li.

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3.4. Cch khc phc - Bc 1. Kim tra chain/ring RRU tha trn M2000

Chy lch LST BTSRXUBRD query mng ng CPRI ca cng li. Ty thuc vo thit k trm, kim tra s d tha ca chain/ring RRU c cu hnh. + Yes S d tha ca chain/ring RRU c cu hnh. Chuyn n bc b. + No Khng c chain/ring RRU tha. Chuyn n bc 2.

b. Chy lnh MML RMV BTSRXUCHAIN tho b chain/ring RRU tha. Kim tra li cnh bo. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) - Bc 2. Kim tra s lp t ca module quang hoc kim tra kt ni cp trn

module CPRI quang hoc port in ca BBU trong trm. a. Kim tra v tr m module quang c lp t hoc kim tra kt ni cp trn

module CPRI quang hoc port in ca BBU trong trm. + Yes Module quang c ci t, cp c ni. Chuyn n bc c. + No Module quang khng c ci t, hoc cp khng c kt ni.

Chuyn n bc b. b. Lp t module quang hoc kt ni cp vo port CPRI quang/in c. Tho module quang hoc cp c kt ni n port quang in v sau lp

t tr li. Kim tra li cnh bo. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc d.

d. Trong trng hp cng CPRI quang c s dng, thay th module quang. Trong trng hp cng CPRI in c s dng, thay th cp c kt ni n cng in. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc 3.

- Bc 3. Tho v lp li boardard giao tip ni m cng li c nh v trong trm. Kim tra li cnh bo. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 4.

- Bc 4. Thay th boardard giao tip CPRI ni m cng li c nh v trong trm. Kim tra li cnh bo. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lp li boardard c. Lin h vi hi ng k s

chnh v tuyn (email: [email protected])

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4. Li TRX Clock Critical Alarm 4.1. M t - Alarm ny xut hin khi ng h master hoc slave bnh thng, nhng s khung

hoc s timeslot khng ng. 4.2. nh hng n h thng - TRX khng hot ng bnh thng nu nh alarm trn xy ra. 4.3. Nguyn nhn - TDU b hng. - TMU b hng. - TRX b hng. - Cp kt ni vi backplane ca TRX b lng hoc b hng - Backplane b hng. 4.4. Cch khc phc - Bc 1. Kim tra v tr TDU b hng. Kim tra cc arlam lin quan nh ALM-

2118 TRX Software Running Abnormal Alarm, ALM-2166 TRX Clock Prompt Alarm, v ALM-2204 TRX Communication Alarm c tn ti khng. Nu c th thay th TDU v kim tra li cnh bo c xo cha? Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 2.

- Bc 2. Thay th TMU Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 3.

- Bc 3 Thay th TRX. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 4.

- Bc 4. Kim tra cp kt ni vi backplane b lng hoc b hng. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 5.

- Bc 5. Thay th backplane. Thay th TRB v CMB. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 5. Li TRX Clock Prompt Alarm (TRX Clock Critical Alarm - ID alarm 4184) 5.1. M t - Alarm ny xut hin khi:

S khung hoc s timeslot l bt thng. ng h chnh v ph bt thng ti mt thi im.

5.2. nh hng n h thng - Tt c cc dch v ca DTRU s b ngn nu nh xy ra cnh bo trn.

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5.3. Nguyn nhn - DCCU b hng. - Module iu khin chnh b hng. - Phn cng DTRU b hng. - Phn chia cp trn rack b sai. 5.4. Cch khc phc - Bc 1. Thay th DCCU.

Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 2.

- Bc 2 Thay module iu khin chnh. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 3.

- Bc 3. Thay th DTRU Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 4.

- Bc 4. Thay th rack Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 6. Li TRX Close HPA Alarm 6.1. M t - Khi nhit ca cabinet BTS3012A tng qu cao n 52 C v chc nng gim

nhit cao trn TRX c thit lp l Yes, h thng s i vo trng thi bo v t ng, tt b khuch i ca mt s TRX v thng bo li.

6.2. nh hng n h thng - Nu chc nng gim nhit cao trn TRX c thit lp l Yes, cc dch v

ca h thng s b nh hng mt phn bi v s iu chnh t ng tt cc b khuch i ca TRX.

6.3. Nguyn nhn - Nhit ni ca cabinet BTS3012A t n 52oC . - Mch bo v nhit b hng. - C cnh bo VSWR t b combiner v b chia n TRX c kt ni. 6.4. Cch khc phc - Bc 1. Query nhit bn trong ca cabinet. Kim tra bng LMT nhit bn

trong c cao hn 52oC hay khng (mt khong 2 pht kim tra chnh xc). Yes Chuyn n bc 3. No Chuyn n bc 2.

- Bc 2. Kim tra b combiner v b chia. Kim tra c cnh bo VSWR c to ra trn b combiner v b chia. Nu cnh bo VSWR c thng bo, hy bo

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m rng anten c kt ni ng hoc thay th b combiner v b chia. Kim tra li alarm Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 3.

- Bc 3. Reset BTS. Dng LMT reset BTS, thc hin reset mc 4, kim tra li cnh bo. Yes Li cnh bo arlam. Qu trnh x l Alarm hon thnh. No Mch bo v nhit b li. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) - Bc 4. Query cnh bo iu ho hoc b phn trao i nhit. Dng LMT kim tra

cc cnh bo ALM-2480 BTS3012A Air-Conditioner Alarm or ALM-2492 BTS3012A Heat-Exchanger Alarm c xut hin khng. Xo cnh bo tu thuc vo cc khuyn ngh trong vic x l li ALM-2480 BTS3012A Air-Conditioner Alarm or ALM-2492 BTS3012A Heat-Exchanger Alarm. Kim tra li cnh bo. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 5

- Bc 5. Quan st nhit xung quanh. Kim tra nhit xung quanh c cao hn 55oC i vi cabinet c iu ho v cao hn 45oC i vi cabinet c b phn trao i nhit. Yes Chuyn n bc 6. No Mch bo v nhit hoc b phn iu khin nhit b li. Lin h

vi hi ng k s chnh v tuyn (email: [email protected]) - Bc 6. Lm gim nhit xung quanh. Cabinet BTS3012A c iu ho c th

lm vic di nhit 55oC. Cabinet BTS3012A c b trao i nhit c th lm vic di nhit 45oC. Nu nhit bn ngoi ca cabinet tin n gi tr ny, hy lm mt s gii hn lm gim nhit bn ngoi, v d nh ngn chn cabinet tip xc trc tip vi nh sng mt tri. Khi nhit bn ngoi ca cabinet t di cc gii hn , hy kim tra li cc cnh bo. Yes Alarm c xa. Qu trnh x l Alarm hon thnh No Mch bo v nhit hoc b phn iu khin nhit b li. Lin h

vi hi ng k s chnh v tuyn (email: [email protected]) 7. Li TRX Communication Alarm 7.1. M t - Alarm ny xut hin khi s trao i gia TRX v TMU ti lp link CBUS2 b li. 7.2. nh hng n h thng - TRX khng th hot ng bnh thng nu xy ra cnh bo trn. 7.3. Nguyn nhn - TRX khng c ci t, reset cng hoc lng ngun. - TDU b hng. - TRX b hng. - TMU b hng.

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7.4. Cch khc phc - Bc 1. Kim tra TRX.

Kim tra TRX c c ci t khng? + Yes Ci t TRX. Qu trnh x l Alarm hon thnh + No Chuyn n bc b.

Kim tra TRX c va mi reset cng hoc lng ngun khng? + Yes Qu trnh x l Alarm hon thnh. + No Chuyn n bc 2.

- Bc 2. Kim tra v tr TDU b li. Kim tra v tr cc alarm lin quan nh ALM-2166 TRX Clock Prompt Alarm, ALM-2136 Test Phase-Lock Loop Alarm, ALM-2118 TRX Software Running Abnormal Alarm, ALM-2574 PBU Main Clock Alarm and ALM-2576 PBU Slave Clock Alarm c tn ti trong h thng khng? Nu c thay th TDU v kim li cnh bo.

+ Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn n bc 3. + Khng c bt k alarm no khc c. Chuyn n bc 3.

- Bc 3. Thay th TRX v kim tra li cnh bo. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn n bc 4.

- Bc 4. Thay th TMU v kim tra li cnh bo. Yes Alarm c xa. Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 8. Li TRX Config Mismatch Alarm 8.1. M t Alarm ny xut hin khi mt trong cc nguyn nhn sau xy ra: - TRX d tm loi knh trong thng tin h thng c gi bi BSC mu thun vi

loi knh ang c cu hnh. - TRX kt ni vi b combiner hng, nhng TRX c cu hnh bi nhy tn. - Khi TRX, PBU v CDU lm vic cng nhau, cng sut tnh ca TRX tin n

cng sut gii hn. - Chc nng chuyn mch bo hiu 16kbit/s c cu hnh nhng TRX khng h

tr chc nng chuyn mch bo hiu 16kbit/s. - Tn s ca TRX sai so vi loi TRX. - Loi boardard khe cm sai so vi loi boardard c cu hnh trn BSC. 8.2. nh hng n h thng - TRX khng th hot ng bnh thng nu xy ra cnh bo trn nhnh s 0-8,

10, 11, v 255.

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8.3. Nguyn nhn - Loi boardard c lp t khe cm khc vi cu hnh BSC (nhnh s 0-7,

255). - Cu hnh d liu bt thng (nhnh s 8). - Cu hnh d liu bt thng (nhnh s 9), hoc hiu sut thp ca b combiner

hoc b chia. - Thay i bo hiu 16kbit/s khng c h tr bi phn cng TRX, (nhnh s 10). - Tn s cu hnh khng tng thch vi TRX (nhnh s 11). 8.4. Cch khc phc - Bc 1. Cnh bo trn nhnh s 0-7, 255. Thay th boardard tu thuc cu hnh d

liu hoc sa i cu hnh d liu ci t boardard. Kim tra cnh bo. Yes Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) - Bc 2. Cnh bo trn nhnh s 8.

a. Kim tra cu hnh CCCH .Query thng tin h thng kim tra v tr CCCH c ng theo vi cu hnh knh ca TRX. + Yes ng. Chuyn n bc b. + No Sai. iu chnh li cu hnh. Qu trnh x l Alarm hon thnh.

b. Kim tra kt ni gia cc TRX v Cavity Combiner. Kim tra ni m TRX v Cavity Combiner c ni mt cch hp l, v cho php FH mode. TRX m c ni vi Cavity Combiner khng c cu hnh vi chc nng RF FH. + Yes Ton b cu hnh v kt ni u ng. Lin h vi hi ng k s

chnh v tuyn (email: [email protected]) + No Sai. Reset cu hnh. Qu trnh x l Alarm hon thnh. .

- Bc 3. Cnh bo trn nhnh s 9 a. Kim tra ni m TRX ang hot ng ng vi PBU. Nu TRX c ni

vi PBU (PBU bn tri ca TRX v c ni vi cng ngoi anten ca TRX), b combiner nn l ECDU. Query loi CDU trn BTS side. Nu b combiner l CDU, thay i CDU vi ECDU; nu b combiner l ECDU chuyn n bc b.

b. Thay ECDU v kim tra li cnh bo. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) - Bc 4. Cnh bo trn nhnh s 10.

Thay boardard TRX c lp t vi boardard TRX c th h tr s thay i bo hiu 16kbit/s. Kim tra li cnh bo.

Ch : nhn c phin bn phn cng, bn c th query thng tin boardard BSC. Nu cp s ca phin bn cng ln hn hoc bng 16 nh 20.10.16, boardard TRX c th h tr thay i bo hiu 16kbit/s.

+ Yes Alarm c xa. Qu trnh x l Alarm hon thnh.

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+ No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn (email: [email protected])

- Bc 5. Cnh bo trn nhnh s 11 Kim tra ni m tn s khng tng thch vi loi TRX. Theo di cc bc

sau: Vo mode lm vic cu hnh t ng h thng; Chn Dynamically Configure Changing TRX Frequencies

Chn cell ch hp thoi Dynamically Configure TRX Frequencies. Click Next;

Chn tn s ch. Click Changing TRX Frequencies; Kim tra tn s c gn ca TRX l tn s thch hp:

Di tn ca P-GSM900: 1-124; Di tn ca E-GSM900: 0-124, 975-1023; Di tn ca R-GSM900: 0-124, 955-1023; Di tn ca DCS1800: 512-885. + Yes Tn s c gn cho TRX ng vi loi TRX. Alarm khng c

xa. Lin h vi hi ng k s chnh v tuyn (email: [email protected])

+ No Tn s c gn cho TRX khng ng vi loi TRX. Cu hnh li tn s cho TRX. Qu trnh x l Alarm hon thnh.

9. TRX DBUS Alarm, level=2 9.1. M t - Alarm ny xut hin bus d liu (DBUS) bt thng. 9.2. nh hng n h thng - Dch v s b ngt khi Sub s 0 v s 2 hoc Sub s 1 v s 3 c to ra ti cng

mt thi im. - Dch v s khng b ngt khi Sub s 0 v s 2 hoc Sub s 1 v s 3 c to ra ti

cc thi im khc nhau - Dch v trn mt s hoc tt c cc TRX s b ngt nu cnh bo xy ra trn Sub

s 4. 9.3. Nguyn nhn - Li phn cng ca TRX. - Li backplane ca TRX. - Li TMU. - Li backplane ca TMU. - Li card chuyn i tn hiu. - Li cp phn phi trn rack. 9.4. Cch khc phc - Bc 1. Thay TRX v kim tra cnh bo.

Yes Qu trnh x l Alarm hon thnh.

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No Alarm khng c xa. Chuyn sang bc 2. - Bc 2. Thay backplane ca TRX v kim tra cnh bo.

Yes Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn sang bc 3.

- Bc 3. Thay TMU v kim tra cnh bo. Yes Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn sang bc 4.

- Bc 4. Thay backplane ca TMU v kim tra cnh bo. Yes Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn sang bc 5.

- Bc 5. Thay card chuyn i tn hiu v kim tra cnh bo. Yes Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Chuyn sang bc 6.

- Bc 6. Thay th cp phn phi trn rack v kim tra cnh bo. Yes Qu trnh x l Alarm hon thnh. No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 10. TRX DBUS Alarm, level=2 10.1. M t - Alarm ny xut hin khi TRX d tm vng kha pha thu/pht hoc b kim tra

vng kha pha trn TRX khng c ng ra tn s yu cu. 10.2. nh hng n h thng - i vi dng BTS3102:

Khi Sub l s 0, 1, 2, 3 dch v khng th nh hng i vi vng kha pha gi v nhn c lu tr.

Khi Sub l s 255, li s khng nh hng dch v nhng loopback RF kim tra chc nng ca DTRU.

- i vi dng BTS3900: Li s nh hng n dch v

10.3. Nguyn nhn - Phn cng DTRU hot ng bt thng. - Phn cng DTRU b li. 10.4. Cch khc phc - Bc 1. Khi s Sub l 0, 1, 2 lm nh sau:

a. Kim tra cc cnh bo lin quan khc ALM-4154 TRX main clock alarm. + Yes Alarm c thng bo. Sa li ty thuc vo khuyn ngh sa li

i vi ALM-4154 TRX main clock alarm. Kim tra alarm c c xa khng. Nu c xa, qu trnh x l hon thnh, nu khng chuyn n bc b.

+ No Alarm khng c thng bo. Chuyn n bc b.

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b. Kim tra cnh bo for ALM-4184 TRX Clock Critical Alarm. + Yes Alarm c thng bo. Sa li ty thuc vo khuyn ngh sa li

i vi ALM-4184 TRX Clock Critical Alarm. Kim tra alarm c c xa khng. Nu c xa, qu trnh x l hon thnh, nu khng chuyn n bc c.

+ No Alarm khng c thng bo. Chuyn n bc b. c. Reset BTS. Thc hin reset mc 4 hoc ct ngun ca BTS trn LMT hoc

SMT v kim tra li cnh bo. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn sang bc d.

d. Ci t li module iu khin chnh v boardard TRX. Tt ngun BTS. Lp t li tng module. m bo mi module tip xc vi

backplane. Bt ngun BTS, v kim tra li cnh bo. + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Phn cng ca TRX hoc module iu

khin chnh c th b li. Lin h vi hi ng k s chnh v tuyn (email: [email protected])

- Bc 2. Khi s Sub l 0, i vi BTS3900, lm nh sau: Thay TRU v kim tra li cnh bo:

+ Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) - Bc 3. Khi s Sub l 255, lm nh sau:

a. Reset DTRU v kim tra li cnh bo: + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Chuyn sang bc b

b. Thay DTRU v kim tra li cnh bo: + Yes Alarm c xa. Qu trnh x l Alarm hon thnh. + No Alarm khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 11. Li TRX Hardware Prompt 11.1. M t - Li ny xut hin khi TRX pht hin u ra ca vng kha pha ban u khng th

cho tn s c i hi, hoc vic truyn hoc nhn vng kha pha ti u ra ca n khng th cho tn s c i hi.

11.2. nh hng n h thng - Phn li ny khng nh hng n dch v nhng cn kim tra li cu trc vng

lp ca TRX. 11.3. Nguyn nhn - Phn cng ca TRX ang chy bt thng.

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- Phn cng ca TRX b li. 11.4. Cch khc phc - Bc 1. Reset li TRX v kim tra li cnh bo c c xa khng?

Yes Cnh bo c xa. Cnh bo c hon thnh x l. NoCnh bo khng c xa. Tin hnh bc th 2.

- Bc 2. Thay th TRX v kim tra cnh bo c c xa khng? YesCnh bo c xa. Kt thc qu trnh x l. No Cnh bo khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 12. Li TRX PA Shutdown 12.1. M t - Li ny xut hin khi khuch i cng sut ca TRX b tt do TRX hoc cell b

kha. 12.2. nh hng n h thng - Dch v s b nh hng trn TRX ng vi cnh bo ny. 12.3. Nguyn nhn - TRX hoc cell b cm hot ng. 12.4. Cch khc phc - Bc 1. Bt li TRX or cell b kha trong STM

Kim tra xem Li ny c xa sau x l hay khng? + Yes Li c xa. Qu trnh x l Li hon thnh. + No Li khng c xa. Chuyn n bc 2.

- Bc 2. Reset li boardard chnh thc hin vo gi thp im bng lnh RST BTSBRD Kim tra xem Li ny c xa sau khi Reset khng?

+ Yes Li c xa. Qu trnh x l Li hon thnh. + No Cnh bo khng c xa. Lin h vi hi ng k s chnh v

tuyn (email: [email protected]) 13. Li TRX Temperature Abnormal 13.1. M t - Li ny xut hin khi nhit TRX vt qu ngng. Cho TRX chung th nhit

vt qu 85 C, cho DETR v PETR l 90 C, cho EDGE l 90 C 13.2. nh hng n h thng - TRX chy bt thng v tt c cc dch v chy trn TRx ny s b ngt. 13.3. Nguyn nhn - H thng xua tan nhit bt thng. - Nhit phng my th qu cao - Phn cng TRx b li

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13.4. Cch khc phc - Bc 1. Kim tra h thng lm nhit.

Kim tra cnh bo FAN, kim tra cnh bo iu ha hoc ngun AC trong t BTS3012, kim tra cnh bo v vic trao i nhit hoc ngun AC/DC c b li khng? Nu c 1 hoc bt k 1 cnh bo no trong cc cnh bo ny th tt ngun cung cp cho TRX, xa cnh bo bt ngun TRX ln i 10 pht sau check li cnh bo xem c c xa khng? + Yes Li c xa. Qu trnh x l li hon thnh. + No Li khng c xa. Chuyn n bc 2.

- Bc 2. Kim tra mi trng lm vic ca BTS. Kim tra nhit mi trng ca BTS c vt qu 50 C khng. Nu vt

qu 50 C tt ngun TRX v tin lm lm cho nhit xung 25 C sau bt ngun TRX ln v kim tra li cnh bo c c xa khng? + Yes Li c xa. Qu trnh x l Li hon thnh. + No Cnh bo khng c xa. Chuyn sang bc 3

- Bc 3. Thay th TRX v kim tra cnh bo c c xa khng? Yes Cnh bo c xa. Kt thc qu trnh x l. No Cnh bo khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 14. Li TRX Temperature Too High 14.1. M t - Li ny xut hin khi nhit khuch i cng sut vt 90 C 14.2. nh hng n h thng - Tt c cc dch v s b ngt khi xy ra cnh bo ny. 14.3. Nguyn nhn - Nhit mi trng qu cao. - H thng nhit chy bt thng. - Phn cng BTS. 14.4. Cch khc phc - Bc 1. Kim tra nhit xung quanh BTS.

Tt ngun TRX. i vi BTS trong nh, nhit phi di 25 C, vi BTS ngoi tri, DHEU phi ang chy bnh thng. Sau bt ngun TRX. + Yes Li c xa. Qu trnh x l Li hon thnh. + No Li khng c xa. Chuyn n bc 2.

- Bc 2. Kim tra FanNot In-Position alarm ca BTS. Tt ngun TRX. Thc hin bin php xa i FanNot In-Position alarm . Sau

10 pht kim tra li cnh bo v bt ngun TRX. + Yes Li xut hin. Qu trnh x l Li hon thnh. + No Cnh bo khng xut hin. Chuyn sang bc 3

- Bc 3. Thay th TRX v kim tra cnh bo c c xa khng?

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Yes Cnh bo c xa. Kt thc qu trnh x l. NoCnh bo khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]) 15. Li TRX VSWR 15.1. M t - Li ny xut hin khi t l sng ng ti cng cng sut u ra ln hn 3 hoc cc

port ca DTRU nh TX1, TX2, TCOM kt ni khng chnh xc. 15.2. nh hng n h thng - Tt c cc dch v chy trn TRx ny s b ngt khi xy ra li ny. 15.3. Nguyn nhn - Kt ni cng u ra ca TRx b lng - Kt ni cng u vo ca CDU b lng - Cp gia cng u ra TRX v u vo CDU b hng - Phn cng TRx b hng - Phn cng CDU b hng. 15.4. Cch khc phc - Bc 1. Kim tra cp kt ni u ra ca TRx.

Kim tra kt ni cp u ra ca TRX c tt khng? + Yes i n bc 2. + NoKt ni li cp u ra ca TRx v Reset li TRx. Kim tra li cnh

bo. Nu cnh bo c xa th qu trnh x l hon thnh. Nu cnh bo khng c xa th i n bc 3.

- Bc 2. Kim tra cp kt ni ti u vo ca CDU. Kim tra kt ni cp u vo ca CDU c tt khng?

+ Yesi n bc 3. + No Kt ni li cp u vo ca CDU v Reset li TRx. Kim tra li cnh

bo. Nu cnh bo c xa th qu trnh x l hon thnh. Nu cnh bo khng c xa th i n bc 3.

- Bc 3. Thay th cp gia TRX v CDU. Thay th cp gia TRX v CDU v Reset li TRx. Kim tra li cnh bo.

+ YesCnh bo c xa th qu trnh x l hon thnh. + No Cnh bo khng c xa th i n bc 4.

- Bc 4. Thay th TRx Thay th TRx v kim tra li cnh bo?

+ YesCnh bo c xa th qu trnh x l hon thnh. + NoCnh bo khng c xa th i n bc 5.

Bc 5. Thay th CDU Thay th CDU v kim tra li cnh bo?

+ YesCnh bo c xa th qu trnh x l hon thnh.

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+ NoLin h vi hi ng k s chnh v tuyn (email: [email protected]).

16. Li TRX Voltage 16.1. M t - Li ny xut khi in p u ra ca ngun cung cp l bt thng . 16.2. nh hng n h thng - DTRU s khng chy bnh thng khi cnh bo ny xy ra v cc cnh bo khc

c th khng xy ra. 16.3. Nguyn nhn - Li phn cng DTRU - Ngun in -48V khng bnh thng. 16.4. Cch khc phc - Bc 1. Kim tra xem ngun cung cp -48V c bnh thng khng.

Tt DTRU tng ng b li. Ly cp ngun ca DTRU ra. Kim tra in p ca ngun cung cp xem c bnh thng khng (-40V n -60V) + Yes i n bc 3. + Noi n bc 3.

- Bc 2. Kim tra in p u vo ca khi chng st ca ngun cung cp. BTS3012: Kim tra in p u vo ca khi chng st ngun cung cp c

bnh thng khng (-40 n -60 V). + YesKim tra u vo ca khi chng st ca ngun cung cp, b lc

EMI, cng tt ngun BusBar v thay th cc thit b li. + No Lin h vi hi ng k s chnh v tuyn (email:

[email protected]). BTS3012AE: Kim tra in p ti cng tc ngun BUSBAR c bnh thng

khng (Bnh thng l -40V n -60V) v xem bt k kt ni c vn g khng? + Yes i n bc 3 + No Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) BTS3006C: Kim tra in p ti cng tt ngun c vn g khng? (-40V n

-60V) v xem bt k kt ni c vn g khng? + Y i n bc 3 + N Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) - Bc 3. Thay th TRx b li v kim tra li cnh bo c b xa khng?

Yes Cnh bo c xa th qu trnh x l hon thnh. NoLin h vi hi ng k s chnh v tuyn (email:

[email protected])

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17. Li TRX main clock 17.1. M t - Li ny xut hin khi Carrier Module pht hin ra tn hiu xung ng h ph chnh

n khng c gi tr. 17.2. nh hng n h thng - Dch v trn DTRU s b ngt . - Ch ch ca Modul iu khin chnh khng c cu hnh. - Lc Module iu khin chnh c cu hnh v xy ra cnh bo xung ph DTRU. - Mt cnh bo ng h ph DTRU c bo khi cnh bo ny xy ra. 17.3. Nguyn nhn - DCCU b li. - Modul iu khin chnh b li. - Phn cng ca DTRU b li. - Phn phi cp trn Rack b li. 17.4. Cch khc phc - Bc 1. Thay th DCCU

Thay th DCCU v kim tra li cnh bo c c xa khng? + Yes Cnh bo c xa v qu trnh x l hon thnh. + No Cnh bo khng c xa. i n bc 2.

- Bc 2. Thay th Module iu khin chnh. Thay th Modul iu khin chnh. Kim tra li cnh bo c c xa khng?

+ YesCnh bo c xa v qu trnh x l hon thnh. + No Cnh bo khng c xa. i n bc 3.

- Bc 3. Thay th TRx. Thay th TRx. Kim tra li cnh bo c c xa khng?

+ Yes Cnh bo c xa v qu trnh x l hon thnh. + No Cnh bo khng c xa. i n bc 4.

- Bc 3. Thay th rack. Thay th rack. Kim tra li cnh bo c c xa khng?

+ Yes Cnh bo c xa v qu trnh x l hon thnh. + No Cnh bo khng c xa. Lin h vi hi ng k s chnh v

tuyn (email: [email protected]) 18. Li TRX maintenance 18.1. M t - Li ny xut hin khi phn mm ti v khng tng thch vi phn cng. 18.2. nh hng n h thng - Khi cnh bo ny xut hin. TRX chy trc tip trn phn mm ti v nu b nh

ca TRX c gi tr vi phn mm ti v.

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- Nh vy, phin bn ca phn mm ti v l khng tng thch vi phin bn d kin. Phin bn ca phn mm ti v chy c ly t BTS c c quan h vi TRX. Phin bn truy vn t LMT l khng c gi tr .

18.3. Nguyn nhn - Cc phin bn phn mm ti v khng h tr cho cc CPU ang c ci t bn

trong TRx. 18.4. Cch khc phc - Bc 1. Kim tra xem SubNo. ca cnh bo c bng 0.

Yes i n bc 2 No Cnh bo khng c xa. Lin h vi hi ng k s chnh v tuyn

(email: [email protected]). - Bc 2. Ti v kch hot phn mm c h tr cho cc CPU ci t bn trong

TRx.Xem li cnh bo sau khi thc hin thao tc ny. YesCnh bo c xa v qu trnh x l hon thnh. NoLin h vi hi ng k s chnh v tuyn (email:

[email protected]) 19. Li TRX power decrease 19.1. M t - Li ny xut hin khi cng sut tnh ca Carrier Module th thp hn Main Control

Module bo v DAFU. 19.2. nh hng n h thng - Cng sut tnh ca DTRU thp hn cng sut ca hn Main Control Module iu

ny c th nh hng n vng ph. 19.3. Nguyn nhn - Cu hnh d liu b li. - Cng sut ca DAFU qu thp. 19.4. Cch khc phc - Bc 1. Kim tra li cu hnh d liu.

Kim tra li Power level ca TRX (Chy lnh LST GTRXDEV trong MML client v thit lp cc thng s nh i hi IDTYPE=BYID, CELLID=Cell Index, TRXID=TRX ID . Kim tra Power level v Power type)c trong phm vi lm vic ca DAFU. Phm vi lm vic ca DAFU c h tr v quyt nh bi Power type ca DDPU. Chng hn nh 60W c h tr. + YesCnh bo c xa. Cnh bo c x l hon thnh. + No Cnh bo khng c xa. i ti bc 2.

- Bc 2. Kim tra li DAFU. Chy lnh DSP BTSBRD trong MML clien v thit lp tham s i hi

(INFOTYPE=BASEINFO, IDTYPE=BYID, BTSID=BTS Index, BRDTYPE=Boardard Type, CN=CabinetNo., SRN=SubrackNo., SN=SlotNo) sau kim tra li thng tin. + YesCnh bo c xa. Cnh bo c x l hon thnh.

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+ NoCnh bo khng c xa. Lin h vi hi ng k s chnh v tuyn (email: [email protected])

20. Li TRX slave clock 20.1. M t - Li ny xut hin khi A Carrier Module pht hin ra tn hiu xung ng h ph

vo n khng c gi tr. 20.2. nh hng n h thng - Nu cnh bo TRX main clock Li xy ra cng vi cnh bo ny th cc dch v

trn DTRU b gin on hon ton. 20.3. Nguyn nhn - Trng thi ch ca Module iu khin chnh khng c ci t. - DCCU b li. - Modul iu khin chnh b li. - Phn cng ca DTRU b li. - Phn phi cp trn rack b li. 20.4. Cch khc phc - Bc 1. Ci t li ch ch cho DTMU.

Remove v ci t li ch ch cho DTMU. Kim tra li cnh bo c c xa khng? + Yes Cnh bo c xa. Vic x l cnh bo c hon thnh. + No Cnh bo khng c xa. i n bc 2.

- Bc 2. Thay th DCCU Thay th DCCU v kim tra li cnh bo.

+ Yes Cnh bo c xa. Vic x l cnh bo c hon thnh. + No Cnh bo khng c xa. i n bc 3.

- Bc 3. Thay th Modul iu khin chnh(Main Control Modul) Thay th Module iu khin chnh v kim tra li cnh bo.

+ Yes Cnh bo c xa. Vic x l cnh bo c hon thnh. + No Cnh bo khng c xa. i n bc 4.

- Bc 4. Thay th DTRU Thay th DTRU v kim tra li cnh bo.

+ YesCnh bo c xa. Vic x l cnh bo c hon thnh. + NoCnh bo khng c xa. i n bc 5.

- Bc 5. Thay th cp phn phi ca rack b li Thay th rack v kim tra li cnh bo.

+ YesCnh bo c xa. Vic x l cnh bo c hon thnh. + No Cnh bo khng c xa. Lin h vi hi ng k s chnh v

tuyn (email: [email protected])

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21. ALM-4180: Li TRX TypeNot Support Alarm 21.1. M t - Li ny xut hin khi loi cng sut ca khi sng mang 40W c thit lp ln

60W. 21.2. nh hng n h thng - Vng ph gim i. 21.3. Nguyn nhn - Loi cng sut ca DTRU 40W b thit lp thnh 60W - Li cu hnh d liu 21.4. Cch khc phc - Kim tra loi cng sut thit lp c ng nht vi loi cng sut ca DTRU hay

khng? Yes Nguyn nhn li khng xc nh c. Lin h vi hi ng k s

chnh v tuyn (email: [email protected]) No Hiu chnh cu hnh ca Loi cng sut sng mang trong th Device

Property. X l li hon thnh. 22. ALM-10764: Temperature Too High Alarm 22.1. M t - Li ny xut hin khi nhit t cao hn gii hn nhit trn (mc nh l

68C). 22.2. nh hng n h thng - Kh nng tiu tn nhit trong t BTS3012AE b nh hng. Phn cng ca t

BTS3012AE c th b hu hoi. 22.3. Nguyn nhn - Nhit t qu cao - Gii hn nhit trn khng c thit lp hp l - Cm bin nhit b hng - Cc dy cp ni vi cm bin nhit b hng - Qut b hng Khi DHEC b li 22.4. Cch khc phc - Bc 1. Kim tra gii hn nhit trn ca khi DHEU c thit lp hp l

cha? Yes Chuyn n bc 3. No Chuyn n bc 2.

- Bc 2. Thit lp li gii hn nhit trn. Quan st li c ht khng? Yes Li c xa. X l li hon thnh. No Li khng c xa. Chuyn n bc 3.

- Bc 3. Kim tra cm bin nhit c bnh thng khng? Yes Chuyn n bc 4.

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No Chuyn n bc 6. - Bc 4. Kim tra cp cm bin nhit c cht khng?

Yes Chuyn n bc 6. No Chuyn n bc 5.

- Bc 5. Kt ni li cp cm bin nhit . Quan st li c ht khng? Yes Li c xa. X l li hon thnh. No Li khng c xa. Chuyn n bc 7.

- Bc 6. Thay th cm bin nhit . Quan st li c ht khng? Yes Li c xa. X l li hon thnh. No Li khng c xa. Chuyn n bc 7.

- Bc 7. Kim tra qut c bnh thng khng? Yes Chuyn n bc 9. No Chuyn n bc 8.

- Bc 8. Thay th qut. Quan st li c ht khng? Yes Li c xa. X l li hon thnh. No Li khng c xa. Chuyn n bc 9.

- Bc 9. Thay th DHEC. Quan st li c ht khng? Yes Li c xa. X l li hon thnh. No Li khng c xa. Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) 23. ALM-12804: Boardard Hardware Failure Alarm 23.1. M t - Li ny xut hin khi boardard c li khng th phc hi c. Cc li bao gm

ghi, xa v t kim tra b nh flash, khng c tn hiu clock ng ra, mt tn hiu clock ti cc cng Ethernet.

23.2. nh hng n h thng - Khi cnh bo ny xut hin cc dch v thc hin bi trm gc b ngt. 23.3. Nguyn nhn - Phn cng knh thu v pht v tuyn b hng - Phn cng board khuch i cng sut b hng - Cc phn ca b kt ni vng kha pha IF, AD6655, AD9230, AD9788, SFP b

hng - Phn mch ca boardard flash, FPGA, DSP, clock, iu chnh in p ngun, pht

hin tt ngun AC b hng - Ngun cung cp khng n nh 23.4. Cch khc phc - Bc 1. Reset trm v kim tra li c c xa khng?

Yes Li c xa. Kt thc x l li. No Li khng c xa. Chuyn n bc 2.

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- Bc 2. Thay th mun BTS3900E v kim tra li c c xa khng? Yes Li c xa. Kt thc x l li. No Li khng c xa. Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) 24. ALM-12850: Boardard Hardware Indication Fault 24.1. M t - Li ny xut hin khi cc thnh phn trong khi pht hin tt ngun AC b hng. 24.2. nh hng n h thng - Khng nh hng ti h thng 24.3. Nguyn nhn - Cc thnh phn trong mch pht hin tt ngun b ph hy 24.4. Cch khc phc - Bc 1. Reset trm v kim tra li c c xa khng?


- Bc 2. Thay th mun BTS3900E v kim tra li c c xa khng? Yes Li c xa. Kt thc x l li. No Li khng c xa. Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) 25. ALM-5066: Boardard Internal Hardware Abnormal 25.1. M t - Li ny xut hin khi phn cng bn trong boardard con b hng. 25.2. nh hng n h thng - Mc nghim trng: Khi BBU hoc DRFU khng th lm vic bnh thng. Cc

dch v bt ngun t BBU hoc DRFU b ngt. - Mc khng nghim trng: Mt vi chc nng nh ca khi BBU hoc DRFU

khng hot ng. 25.3. Nguyn nhn - Li phn cng c th tn ti trong boardard. 25.4. Cch khc phc - Bc 1. Reset boardard v kim tra li c c xa khng?


- Bc 2. Thay th boardard khc v kim tra li c c xa khng? Yes Boardard mi hot ng. Kt thc x l li. No Boardard mi khng hot ng. Lin h vi hi ng k s chnh v

tuyn (email: [email protected])

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26. ALM-2170: DBUS Alarm 26.1. M t - Li ny xut hin khi bus d liu khng hot ng 26.2. nh hng n h thng - Cc dch v trn mt s hoc tt c TRX s b ngt. 26.3. Nguyn nhn - ng truyn E1 b li - Bus d liu khng hot ng - Khi TMU b hng 26.4. Cch khc phc - Bc 1. Kim tra li mc trn lin quan c xy ra khng?

Yes Xa li mc trn theo cc ngh x l tng ng. No Chuyn n bc 2. Li mc trn lin quan: ALM-2214 E1 Local Alarm. Li mc trn (li cha) v

li con c cng m s Site v Module trong thng tin xc nh li. Nu ng truyn E1 b li th mt li cc b E1 xy ra v do o mt li mc

trn cng xut hin. - Bc 2. Kim tra c bt k li lin quan no khng.

Kim tra li ALM-2214 E1 Local Alarm tn ti trong LMT. Nu ng th x l li ny theo ngh x l tng ng. Kim tra li c c xa khng? + Yes X l li kt thc. + No Chuyn n bc 3.

- Bc 3. Kim tra liu duy nht mt u cui ca cp E1 c ni t. Kim tra liu cc cng tc DIP trn TMU c thit lp ng. Nu khng, hiu

chnh thit lp m bo duy nht mt u cui cp E1 c ni t. Kim tra li c c xa khng? + Yes X l li kt thc. + No Chuyn n bc 3.

- Bc 4. Thay th TMU v kim tra li c c xa khng? Yes X l li kt thc. No Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) 27. ALM-3662: DRU Communication Alarm 27.1. M t - Li ny xut hin khi DRU khng th lm vic bnh thng, hoc ng truyn

lin lc gia DRU v MCU khng sn sng, hoc DRU b reset. 27.2. nh hng n h thng - Tt c cc dch v h tr bi DRU s b ngt. 27.3. Nguyn nhn - DRU mi b reset.

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- DRU khng th lm vic nh bnh thng - ng lin lc gia DRU v MCU khng sn sng 27.4. Cch khc phc - Bc 1. Reset trm.

Thc hin reset cp 4 trn BTS3002C hoc reset bng cch tt ngun thng qua LMT. Kim tra li c xa? + Yes Kt thc x l li. + No Chuyn n bc 2.

- Bc 2. Tho v chn khi MCU, DRU vo backplane. Kim tra li c xa? Yes Kt thc x l li. No Lin h vi hi ng k s chnh v tuyn (email:

[email protected]). 28. ALM-3606: DRU Hardware Alarm 28.1. M t - Li ny xut hin khi mch tn s v tuyn DRU lm vic khng n nh (cng

sut ng ra qu ln hoc qu nh), hoc b nh flash trong DRU hng. 28.2. nh hng n h thng - DRU hng v lm vic khng n nh. Kt qu l tt c cc dch v h tr bi

DRU b ngt. 28.3. Nguyn nhn - MCU xut ra in p lm vic RF khng bnh thng - Phn cng DRU b li - Phn cng MCU b li 28.4. Cch khc phc - Bc 1. Reset trm

Thc hin reset cp 4 trn BTS3002C hoc reset bng cch tt ngun thng qua LMT hoc h thng bo dng ring. Kim tra li c c xa khng? + Yes X l li kt thc. + No Chuyn n bc 2.

- Bc 2. Tho ra ri chn vo li cc khi MCU, DRU mc ch m bo cc kt ni u tt. Kim tra li c c xa khng? Yes X l li kt thc. No Chuyn n bc 3.

- Bc 3. Thay th MCU, DRU v kim tra li c c xa khng? Yes X l li kt thc. No Lin h vi hi ng k s chnh v tuyn (email:

[email protected])

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29. ALM-26200: Boardard Hardware Fault 29.1. M t - Li ny xut hin khi phn cng boardard b hng. 29.2. nh hng n h thng - Mc nghim trng: Boardard khng th lm vic bnh thng. Cc dch v

ang thc hin trn boardard b ngt. - Mc khng nghim trng: Mt vi chc nng ca boardard b li, tin cy

gim. 29.3. Nguyn nhn - Nhit trn boardard qu mc cho php - Phn cng ca boardard b hng 29.4. Cch khc phc - Bc 1. Kim tra li tng quan trn M2000

a. Kim tra li tng quan ca boardard hng trn M2000: 26104 Boardard Temperature Unacceptable. + Yes Li tng quan tn ti. Chuyn n bc con b. + No Li tng quan khng tn ti. Chuyn n bc 2.

b. Xa li tng quan theo ngh x l tng ng. Kim tra li c c xa khng? + Yes Li c xa. X l li hon thnh. + No Li khng c xa. Chuyn n bc 2.

- Bc 2. Reset li boardard li thng qua tt ngun trn M2000. Kim tra li c c xa khng? Yes Li c xa. X l li hon thnh. No Li khng c xa. Chuyn n bc 3.

- Bc 3. Thay th boardard li v kim tra li c c xa khng? Yes Li c xa. X l li kt thc. No Li khng c xa. Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) 30. ALM-21801: GSM Cell Out of Service 30.1. M t - BSC kim tra theo chu k TRX cha BCCH v ng truyn RSL ca TRX cha

BCCH. Li ny xut hin khi ng truyn tn hiu v tuyn ca TRX cha BCCH b li, hoc TRX cha BCCH khng th sn sng lm vic.

- C ch tr c c thm vo thng bo li mt dch v GSM. C ch ny c m t nh sau: Sau khi BTS bt u lm vic, cnh bo mt dch v GSM c a ra 90 giy

sau khi mt cell b li. Ngoi ra, nu cell hot ng tr li trong vng 90 giy, li khng cn b a ra na.

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Sau khi BTS bt u lm vic, mt cnh bo ch th ht li mt dch v GSM c a ra 90 giy sau khi cell sn sng hot ng. Ngoi ra, cnh bo xa li s khng c thng bo nu cell b li tr li trong vng 90 giy.

Nu lnh OML khng c thit lp trong vng ba pht sau khi BTS b reset hoc cell vn b li sau khi BTS reset c su pht th mt li mt dch v GSM c thng bo. Nu lnh GSM c thit lp trong vng ba pht v cell tr nn bnh thng trong vng su pht sau khi BTS reset th li mt dch v GSM s khng c a ra.

30.2. nh hng n h thng - Tt c cc dch v thoi v d liu u b ngt. 30.3. Nguyn nhn - Chn bng tay: Cell hoc TRX cha BCCH b block bng tay - Cc hot ng vn hnh v bo dng khc: Bao gm reset trm hoc cell bng

tay v reset trm t ng do cu hnh d liu ng (V d, hiu chnh tn s BCCH)

- Li ngun ca trm: Khng c ngun cung cp cho BTS - CcNguyn nhn khc: BTS cha sn sng cho vic s dng trong khong thi

gian ngn do ng truyn LAPD hoc cc thuc tnh TRX b iu chnh; BTS b reset do BSC reset; BTS t ng reset; Boardard b li; li ng truyn; cu hnh d liu khng hp l; Cc boardard BTS b reset bng tay

30.4. Cch khc phc - Bc 1. Kim tra gi tr thng s Alarm Cause trong thng tin xc nh li

a. Li do chn bng tay. Chuyn sang bc 2. b. Nu nguyn nhn thng s Alarm Cause l Other OM operations. Thc

thi lnh LST OPTLOG xem nht k v cc s kin ny trong vng 30 pht v kim tra liu BSC, BTS c b reset khng, hoc hi cc k s lin quan c thc hin cu hnh d liu ng khng? + Yes Li do hot ng OM trc . Chuyn n bc e. + No Li khng phi do hot ng OM trc . Chuyn n bc 3.

c. Do li ngun BTS. Chuyn n bc 5. d. Gi tr thng s Alarm Cause l Other causes. Chuyn n bc 4. e. Kim tra li c c xa khng?

+ Yes Li c xa. X l li hon thnh. + No Li vn cn. Chuyn n bc 4.

- Bc 2. Kim tra cell v TRX cha BCCH ca cell a. Trn LMT, thc thi lnh LST GCELL v nhp gi tr thng s Cell Index

kim tra cell c ang trong trng thi m (unlock) khng? + Yes Cell khng b chn bng tay. Chuyn n bc c. + No Cell b chn bng tay. Chuyn n bc b.

b. Trn LMT, thc thi lnh SET GCELLADMSTAT chuyn trng thi cell sang m (unlock) v kim tra li c c xa khng? + Yes Li c xa. X l li hon thnh.

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+ No Li vn cn. Chuyn n bc c. c. Trn LMT, thc thi lnh LST GTRX v nhp ch s (index) ca TRX cha

BCCH kim tra liu TRX cha BCCH c ang trong trng thi unlock khng? + Yes TRX cha BCCH khng b chn bng tay. Lin h vi hi ng k

s chnh v tuyn (email: [email protected]) + No TRX cha BCCH b chn bng tay. Chuyn n bc d.

d. Trn LMT, thc thi lnh SET GTRXADMSTAT thit lp trng thi ca TRX cha BCCH thnh unlock v kim tra li c c xa khng? + Yes Li c xa. X l li hon thnh. + No Li vn cn. Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) - Bc 3. Kim tra trng thi vng lp ca cng v khe thi gian mang RSL ca

TRX cha BCCH a. Kim tra vng lp ngc c c thc hin trn cng board giao din Abis

tng ng vi BTS li khng? + Yes Vng lp ngc thc hin trn cng. Chuyn n bc b. + No Vng lp ngc c thc hin trn cng. Chuyn n bc c.

b. Dng vng lp ngc ti cng. Kim tra li c c xa khng? + Yes Li c xa. X l li hon thnh. + No Li vn cn. Chuyn n bc d.

c. Kim tra liu khe thi gian mang RSL ca TRX cha BCCH c b lp khng? + Yes Vng lp ngc thc hin trn khe thi gian. Chuyn n bc d. + No Vng lp ngc khng thc hin trn khe thi gian. Lin h vi hi

ng k s chnh v tuyn (email: [email protected]) d. Trn LMT, thc thi lnh SET E1T1LOP dng vng lp ngc trn khe

thi gian v kim tra li c c xa khng? + Yes Li c xa. X l li hon thnh. + No Li vn cn. Lin h vi hi ng k s chnh v tuyn (email:

[email protected]) - Bc 4. Kim tra cnh bo cha (parent alarm)

a. Trn LMT, thc thi lnh LST BTSCONNECT truy vn thng tin v giao din Abis trong BTS m li xut hin. Chuyn n bc b

b. Trn LMT, chn Alarm v kim tra xem c bt k li cha no sau y xut hin trn cng lin quan ca boardard giao din Abis? 22810 Base Station TMU Auto Activation 21807 OML Fault 21201 E1/T1 Loss of Signal 21202 E1/T1 Loss of Frame Alignment 21203 E1/T1 Remote Alarm Indication Signal

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21204 E1/T1 Alarm Indication Signal 21206 E1/T1 Loopback 21209 E1/T1 Online Loopback Detection 21252 SDH/SONET Loss of Signal 21251 SDH/SONET Tributary Online Loopback Detection 21275 SDH/SONET Tributary Loss of Frame 21277 SDH/SONET TU Alarm Indication Signal 21278 SDH/SONET TU Loss of Pointer 21286 SDH/SONET Tributary Remote Alarm Indication Signal 21287 SDH/SONET Tributary Alarm Indication Signal 21289 SDH/SONET Tributary Loopback 21345 Ethernet Link Fault 20228 GE Link Between GE Switching Boardard and Service Boardard Faulty + Yes Li trn c xut hin. Chuyn n bc c. + No Li trn khng xut hin. Chuyn n bc d.

c. Xa li theo cc bc x l li lin quan v kim tra li c c xa khng? + Yes Li c xa. X l li hon thnh. + No Li vn cn. Chuyn n bc 5.

d. Trn LMT, chn Alarm v kim tra liu BTS vi Site Index xc nh r trong thng tin li c xut bt k li cha no sau y khng? + Li ng trung k c lit k nh sau:

4102 LAPD Alarm hoc cc cnh bo khc lin quan n ng truyn trn giao din Abis v pha BTS.

+ Cc li phn cng c lit k nh sau: 4192 TRX communication alarm hoc cc li lin quan khc 4108 Radio link critical Alarm hoc cc li lin quan khc 4116 TRX Voltage Alarm 4118 4-way Diversity receiving alarm hoc cc li lin quan khc 4136 TRX Hardware Critical Alarm 4140 TRX Temperature Too High Alarm hoc cc li lin quan khc 4144 TRX VSWR Alarm hoc cc li lin quan khc 4154 TRX main lock alarm hoc cc li lin quan khc 4158 DBUS alarm hoc cc li lin quan khc 4164 16K signalingNot support alarm 4184 TRX Clock Critical Alarm 4186 Phase-lock loop critical alarm hoc cc li lin quan khc 4194 Boardard type mismatch alarm 4198 DSP download fail alarm hoc cc li lin quan khc

+ Cc li phn mm c lit k nh sau: 4770 Site Reset Alarm hoc cc li lin quan khc

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4110 TRX power decrease alarm hoc cc li lin quan khc 4112 TRX Close HPA Alarm 4168 ARFCN TRX Type Mismatch

+ Cc li vn hnh c lit k nh sau: 4104 TRX Config Mismatch Alarm hoc cc li lin quan khc 4106 TRX Software Running Abnormal Alarm hoc cc li lin quan khc Yes Li trn xut hin. Chuyn n bc e. No Li trn khng xut hin.Chuyn n bc 5.

- Bc 5. Kim tra ngun BTS a. Lin lc k s bo dng BTS v kim tra BTS c cell mt dch v c c

trang b y pin hay khng? +

huong dan khai thac he thong 2g

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