general feature - diagramasde.comdiagramas.diagramasde.com/otros/crd-8245b manual de...

3

GENERAL FEATURE

SPECIFICATIONS

1. SUPPORTED SYSTEM • IBM Compatible 486SX or Above

2. SUPPORTED OS

3. GENERAL PERFORMANCE• Data Transfer Rate ..........................................................................................Sustained Data Transfer Rate

.............................................................................................10 Times Speed (Inner side) : 1,500 kbytes/sec

.............................................................................................24 Times Speed (Outer side): 3,600 kbytes/sec• Data Buffer Capacity..........................................................................................1 Mbit DRAM (Internal DSP)• Access Time ............................................................................................Random Access : Average 110 ms

4. POWER REQUIREMENTS• Voltage ........................................................................................................................................+5V DC+5%• Ripple....................................................................................................................................+5V : 100mVp-p• Current .........................................................................................Peak in executing access : 1,000mA MAX

................................................................................................................................Random access : 800mA

..............................................................................................................................Normal operation : 700mA..............................................................................................................................................Standby : 30mA..................................................................................................................................................Sleep : 30mA

5. AUDIO PERFORMANCE• Frequency Response......................................................................................................20Hz~20KHz( dB)• S/N Ratio (IHF-A)..................................................................................................70 dB (Typical, 1KHz 0dB)• Distortion (20K-LPF) ............................................................................................0.05% (Typical, 1KHz 0dB)• Channel Separation ................................................................................................................65 dB (Typical)• Dynamic Range (IHF-A)..........................................................................................................70 dB (Typical) • Output Level (47kΩ Load).................................................................................................0.75Vrms (Typical)

• Enhanced IDE interface• Ultra Slim type CD-ROM drive

(Height: 12.7mm)• Fast 110ms Average Access Time• MAX 3,600KB/sec (24X) Sustained Transfer

rate• Photo-CD Multisession Disc Spec compliant• MPC level 3 Spec compliant• Drawer Type Manual load/Electrical Release• 3-Way eject support (Software, Open button,

Emergency eject)• Built-in ATAPI Interface Controller

• Closed enclosure• Software Volume Control• 8 Times Digital Filter for CD Audio• Built-in MODE-1 ECC/EDC• MTBF 60,000h POH (at 10% Utilization)• PIO Mode 4 & Multi-word DMA Mode 2

support & Ultra DMA Mode2 support• Digital audio through ATAPI Interface• Spin-down Mode for energy saving• Support Standby & Sleep mode

• MS-DOS Version 3.1 or Windows 3.1• OS/2 Warp (Ver 3.0 & 4.0) or higher• Windows '95 or ‘98 higher

• Windows 2000 • Windows NT (Version 3.51 or 4.0) or higher

+1-3

4

1. CABINETA. Release 3 screws (A).B. Lift up the Cabinet in the direction of arrow (1).

(See Fig. 1)

2. MAIN CIRCUIT BOARDA. Insert and press a rod in the Emergency Eject

Hole and then the CD Tray will open in thedirection of arrow (2).

B. Release 2 screws (B).C. Remove the Main Circuit Board.

3. FRONT PANELA. Release 5 screws (C) and remove the Cover

Bottom.B. Remove the Front Panel.C. At this time, be careful not to damage the 5 hooks

(a) of the it.

4. BASE PICK-UPA. Remove the Base Pick-Up.

(1)

(A)

(A)(A)

(C)

(C)

Fig. 3

Fig. 1

Fig. 4

(B)(B)

(2)

Fig. 2

DISASSEMBLY

CABINET

HOOKS

MAIN CIRCUIT BOARD

FRONT PANEL ASSY

HOOK (a)

COVERBOTTOM

BASE PICK-UP

EMERGENCYEJECT HOLE

10

REF

REF

REF

REF

REF

REFREF

REF

REF

REF

REFREF

REF

REF

REFVCC VCC

VCC

AP

C

PH

PHEQ-CONTROL

BH

BH

PH-CONTROL

7_MODE 5V

39K

33K

525V

+

7_MODE

36PH

100K

1

2

3

4

5

6

7

BHC

PHC

RFAO

GND1

RFA-

RFIN

FIN1

35BH

34VCC1

33RFSM

32RHLD

31GND2

30REFL

29FE-

28FE

27TE-

26TE

25TSS

24TS

23VCC2

22TSH

21FBAL

20TBAL

19SGC

100K8

FIN2

56K9

E

F

VC

C

56K10

11

12

REFI

VREF

13LDD

14LDS

15LDON

16GHS

17BHH

18EQS

IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION

IC101 (LA9239) : RF Amplifier ICI-V converts and amplifies the signal received from the pick-up and then applies to DSP part of one-chip IC (IC501).

Block Diagram

Pin No. Pin Name Descriptions1 BHC Bottom hold external condensor pin for checking RFAGC.

2 PHC Peak hold external condensor pin for checking RFAGC.

3 RFAO RF Pre AMP output

4 GND RF GND

5 RFA- RF Pre AMP (-) input

6 RFIN RF Sum input

7 FIN1 Pickup output (B+D),

8 Fin2 Pickup output (A+C),

9 E Pickup output (E)

10 F Pickup output (F)

11 REFI Eeternal Condensor Pin of Reference Voltage.

12 VREF Reference output

13 LDD APC circuit output

14 LDS APC circuit input

15 LDON Laser on/off.

16 GHS RF signal gain control.

17 BHH BH response control.

18 EQS RF equalizer. PH detection control

19 SGC Servo gain control

20 TBAL TE balance adjust

21 FBAL FE balance adjust

22 TSH TS wide band control

23 VCC2 Servo VCC

24 TS TS output

25 TSS TS wide band control

26 TE TE signal output (To DSP)

27 TE- TE gain control

28 FE FE signal output (To DSP)

29 FE- FE gain control

30 REFL Reflection output (To DSP)

31 GND2 Servo GND

32 RHLD RF hold control

33 RFSM EFM signal output (To DSP)

34 VCC1 RF VCC

35 BH RF bottom hold output (To DSP)

36 PH RF peak hold output (To DSP)

Pin Description

11

12

H1H

VDD

15kΩ

IN1

FB1

IN2

FB2

IN3

FB3

CT

VREF

STBY

0.012µF

1kΩ

1.1k

Ω

H1L

16

44

25

14

H2H

H2L

13

12

H3H

H3L

VH

FGFG Signal Output

Spindle SpeedControl Input

SFG

SBR

EC

ECR

VP

VCL

SRESET SSET

VT

VN VO

GND

CS

RCS6

RCS5

RCS4

RCS3

RCS2

RCS1

A3

A22

A21

A1

VMSP2

VMSP1

BC2

BC1

11

10

9

7

6

50

18

17

19 20 21

40

51

3

4

53

54

55

1

52

8

49

37

38

VPUMP39

PGSL27

RO326

FO328

VMSL22

PGAC31

RO229

FO230

RO1

FO1

VMAC

32

35

36

15kΩ

20kΩ

20kΩ

20kΩ

0.012µF

0.012µF

100pF

1.65V22µF

5V47µF

100Ω

Rcs=0.33Ω

5V100µF

5V 47µF

0.1µF

0.1µF

100Ω

1kΩ

15kΩ

FF

DivideCircuit

HallCompMatrix

5

56

2

H:activeL:standby

H:3FGL:1FG

H:S-BRKL:R-BRK

45

34

24

41

43

47

46

23

Absolutevalue

S-BRK Conversion

FGGenerator

HallBias

+

X5

UpperDrive

LowDrive

DMOS3-PhaseBridge

OSC

ChargePump

DMOSH/B

DMOSH/B

DMOSH/B

DriveLogic

ABS

ABS

ABS

FB

FB

FB

Logic

Logic

Delta waveOscillator

VREF Reset

Stand-by

VDD Reset

HeatProtection

Drive

DriveM

IC201 (AN8498SH) : Servo Actuator Drive ICGenerates the signal to drive Focus Actuator Coil, Tracking Actuator Coil, Sled Motor, and SteppingMotor by Control Signal input from DSP and u-COM.

Block Diagram

13

Pin No Symbol Description1 A22 SP Drive Output 22 RCS6 SP Power Source 63 RCS5 SP Power Source 54 RCS4 SP Power Source 45 A3 SP Drive output 36 SFG SP FG mode conversion7 FG SP FG signal output8 VMSP2 SP Motor power supply 29 VH SP Hall Bias10 H3L SP Hall (-) input 311 H3H SP Hall (+) input 312 H2L SP Hall (-) input 213 H2H SP Hall (+) input 214 H1L SP Hall (-) input 115 N.C. N.C.16 H1H SP Hall + input 117 ECR SP Torque Reference input18 EC SP Torque input19 VP Op amp Non-inverted input20 VN Op amp inverted input21 VO Op amp output22 VMSL Ch3 power supply23 IN3 Ch3 input24 FB3 Ch3 feedback output25 STBY Stand-by26 RO3 Ch3 inverted output27 PGSL Ch3 Power GND28 FO3 Ch3 Non-inverted output

Pin Description

Pin No Symbol Description29 RO2 CH2 inverted Output30 FO2 CH2 Non-inverted Output31 PGAC CH1, 2 Power GND32 RO1 CH1 Inverted Output33 N.C. N.C. 34 CT 3 Delta-wave Output35 FO1 Ch1 Non-inverted Output36 VMAC Ch1, 2 Power Supply37 BC2 Charge Pump Volume Connector238 BC1 Charge Pump Volume Connector139 VPUMP Charge Pump Boost the Voltage of Output40 GND GND41 IN1 CH1 Input42 N.C. N.C.43 FBI CH1 Feedback Output44 VDD Control Circuit Power Supply45 VREF Reference Voltage Input46 FB2 CH2 Feedback Output47 IN2 CH2 Input48 N.C. N.C.49 VMSP1 SP Motor Power Supply50 SBR SP Break mode conversion51 CS SP Voltage Defected Output52 A1 SP Drive Output153 RCS3 SP Power Source 354 RCS2 SP Power Source 255 RCS1 SP Power Source 156 A21 SP Drive Output 2

14

IC501 (HMS985300) : DSP+ATAPI DECODER+ASP+System Controller

Driver

VCECPLL

TDO, FDOSLDO, SPDO

*11

*1

*12*2

*14

*3

*4*5*6

LA9238

CD-DSP

Data bus[0.7]DRAMData bus[0.15]

LC895300

LC895299

Adress bus[0.18]Sub-code I/Fde-interleve

Adress generator

Sub-code ECC

Address generator

Address generator

Address generator

Address generator

Address generator

ATAPI I/F

Data output input I/F

MicrocontrollerRAM access

De-scramble &Buffering

ECC & EDC

SRAM

CD-DSP I/F& SYNCDetector

Merge

EXT10CMDI

Each BlockRegister

FGCNT

AudioCircuit

ZRESET

HOST

decoder

*7

*8

*10

*9

*13XTALCK

Each BlockXTAL

Microcontroller

1.5KRAM

Clock generator

BufferDRAM

BusArbiter&DRAMcontroller

Each BlockBus controlsiganl

128KEEPROM

A0~A16

D0~D7

ZOE, ZWE, ZCE

Gray Block si characteristic of LG895300.

InterruptController

Timer

FGCNT CMDI

EXTIISW1SW2SW3

IOPORT0~14

FG

Block Diagram

*1 EFMIN,EFMIN2,PH,BH,FE,TE,TES,RREC*2 RHLD,TSH,EQS,GHS,LDON,FBAL,TBAL,TOFST,SGC*3 LOUT,ROUT,DOUT*4 DD~DD15,ZDASP,ZPDIAG*5 ZCSIFX,ZCS3FX,DA0~2,ZDIOR,ZDIOW,ZDMACK,ZHRST,CSEL*6 DMARQ,HINTRQ,ZIOCS16,IORDY*7 ZRD,ZWR,ZCS,MCK,SUA0~7*8 D0~7*9 CRCERR/FLOCK,HFLO/WRQ/DIR/TLOCK,FSEQ,FSX/LRCK/FV,EFLG/ CK2/PRF,C2F/PCK,EFMOUT*10 TEST0~2*11 PCKISTF,PCKIFTP,PDO,POS1~3,RF*12 SLCO0~3,JITC,DSLB,PHC,BHC*13 PLL1*14 SLCIT1~2,AD1,VREF,CSS

15

• IC501 HMS895300Pin Description

Pin No. Signal Type COMMENT

1 Vss P Logic GND

2 A11 O PROM ADDRESS

3 A9 O

4 A8 O

5 A13 O

6 A14 O

7 Wstrobe O Write Strobe

8 A16 O 128K

9 A15 O 64K

10 A12 O

11 A7 O

12 A6 O

13 A5 O

14 A4 O

15 A3 O

16 A2 O

17 A1 O

18 A0 O

19 DATA0 B PROM DATA

20 DATA1 B

21 VDDD P DRAM VDD 5V

22 VDD1 P 3.3V

23 Vss P Logic GND

24 VSSD P DRAM GND

25 DATA2 B PROM DATA

26 DATA3 B

27 DATA4 B

28 DATA5 B

29 DATA6 B

30 DATA7 B

31 ZCE O Chip Enable Signal

32 A10 O PROM ADDRESS

33 Psen O Access Enable Signal

34 IOPORT0 B General Input/Output Port

35 IOPORT1 B

36 IOPORT2 B

TYPEI:INPUT B:BIDIRECTION NC:NOT CONNECT O:OUTPUT P:POWER

16

Pin No. Siganl Type COMMENT

37 TEST0 I TEST PIN (GND)

38 WRQ/HFLO/DIR/TLOCK O Monitor Pin

39 FSEQ/DEF O Frame Sync/DEFECT

40 DOUT/TESO O Digital OUT

41 VDD0 P I/O 5V power supply

42 VSS P Logic GND

43 PLL1 O System Clock PLL

44 PLL1VDD P Logic PLL VDD 3.3V

45 PLL1VSS P logic PLL GND

46 CSEL I ATAPI I/F

47 ZHRST I

48 ZDASP B

49 ZCS3FX I

50 ZCS1FX I

51 Vss1 P I/F GND

52 VDD0 P I/O 5V power supply.

53 DA2 I ATAPI I/F

54 DA0 I

55 ZPDIAG B

56 DA1 I

57 ZIOCS16 O

58 Vss1 P I/F GND

59 HINTRQ O ATAPI I/F

60 ZDMACK I

61 IORDY O

62 ZDIOR I

63 ZDIOW I

64 DMARQ O

65 VDD0 P I/O 5V power supply.

66 VDD1 P 3.3V

67 Vss1 P I/F GND

68 DD15 B ATAPI I/F

69 DD0 B

70 DD14 B

72 DD13 B

73 DD2 B

74 DD12 B

75 DD3 B

76 Vss1 P I/F GND

17


77 DD11 B ATAPI I/F

78 DD4 B

79 DD10 B

80 DD5 B

81 DD9 B

82 DD6 B

83 DD8 B

84 DD7 B

85 VDD0 P I/O power supply 5V

86 TEST1 I TEST Pin (GND)

87 ROUT O DAC output

88 AUVDD P DAC VDD 5V

89 AUVss P DAC GND

90 LOUT O DAC output

91 Vss P Logic GND

92 XTALCK I XTALCK input

93 XTAL O XTALCK output


95 FSX/LRCK O Monitor port

96 EFLG/CK2 O

97 TRV2/DATA B General input/output port

98 TRV B

99 FLOCK/CRCERR O FLOCK/CRCERR/C2F/PCK output

C2F/PCK

100 EFMOUT O EFM output

101 OUTPORT O General output port

102 SW1 I Tray Close

103 SW2 I Tray open

104 SW3 I Eject Switch

105 IOPORT3 B General input/output port

106 IOPORT4 B

107 IOPORT5 B

108 IOPORT6 B

109 VSSD P DRAM GND

110 VDD1 P 3.3V

111 Vss P logic GND

112 VDDD P DRAM VDD 5V


114 IOPORT8 B

18



116 DSLB O SLC PWM output

117 AVDD P Slice Level VDD 3.3V

118 SLCIST1 I EFM Slice Level Control port

119 SLCIST2 I

120 SLCO0 O EFM Slice level output

121 SLCO1 O

122 SLCO2 O

123 SLCO3 O

124 EFMIN I EFM input pin

125 EFMIN2 I

126 AVss P Slice Level GND

127 JITC O Jitter output

128 PWM0 I VCO PWM output

129 FR I VCO frequency control port

130 PCKISTF I Frequency comparater charge pump control port

131 PCKISTP I Phase comparater charge pump control port

132 PLL2VDD P VCEC PLL VDD 3.3V

133 PLL2Vss P VCEC PLL GND

134 PDO O Charge Pump Filter

135 PDS1 O Charge Pump select port

136 PDS2 O

137 PDS3 O

138 RPO O P/N Balance Adjust port

139 SVss P Servo GND

140 AD1 I AD input1

141 PH I Peak HOLD

142 BH I Bottom HOLD

143 RREC I Optical judge input port

144 FE I FE input port

145 TE I TE input port

146 TES I TES compartor input

147 VREF I VREF input port

148 PHC O PH Slice condensor input port

149 BHC O BH Slice condensor input port

150 FBAL O Focus Balance port

151 TBAL O Tracking Balance Port

152 SGC O Servo gain control port

153 TOFST O Tracking offset Adjust port

19


154 SVDD P Servo VDD 5V

155 SVss P Servo GND

156 TDO O Tracking output

157 FDO O Focus output

158 SLDO O Sled output

159 SPDO O Spindle output

160 VDD0 P A/D & D/A 5V

161 Vss P Logic GND

162 VDD1 P 3.3V

163 RHLD O RFAGC hold output port

164 TSH O TS select port

165 EQS O RF Equalizer select port

166 GHS O RF signnal , TS signal gain

167 LDON O Laser Control port

168 TEST2 I TEST PIN (GND)

169 FG I FG input

170 IOPORT10 B General Input/output port

171 IOPORT11 B

172 IOPORT12 B

173 IOPORT13(Debug1) B Audio Mute

174 IOPORT14(Debug2) B LED Drive port

175 ZRESET I CHIP RESET


2. Trouble List (Circuit)

A. LED doesn’t light.B. Pick-Up doesn’t move to the inner-track.C. The Laser of Pick-Up doesn’t light.D. Pick-Up lens doesn’t move up and down.E. Disc doesn’t rotate.F. TOC isn’t read. (The LED turns on, but doesn’t flicker.)

20

TROUBLESHOOTING GUIDE

1. Initial Lead-in Operation

Reset or Power-On.

LED Flickers.

Pick-Up moves to the inner-Track.

Laser on the Pick-Up lights.

Pick-Up lens move up and down

Focus Servo On

Tracking Servo On

Spindle Servo On

Read TOC Area (LED Flickers)

Search the Start of Data Area and then pause.

Check the disc type and disc’s loading.

Spindle kick (for 4 sec)

21

3. Troubleshooting Guide

A. LED doesn’t llight.

* Notes <Parts Location>Top Side : PN101, CN101

IC501X501, F101R119, R201, R234, R241C701

Bottom Side : IC101, IC501, IC201R202, R421, R422, C222, C591, C592

Check Power Voltage.(C701, F101 : 5V)

Does “L” output at IC501pin ?

Check and replaceR421, R422.

Is the CLOCK Frequency ofIC501 pin 33.86MHz?

Check the pattern ofPN101.

Check IC501.

Check a contact pointbetween the main FPCand CN101.

Replace MechanismAssembly.

YES

OK

NG

YES

OK

NO NO170 92

OK

Check C591, C592 and X501.

Replace PCB Assembly.NG

22

B. Pick-Up doesn’t move to the inner track.

Does the signal of IC501Pin change to (H -> L -> H?)

Does “H” output at thepoint (S+)?

Does “H” output at IC501Pin ?

Is the voltage of IC201Pin 1.65V?

Check and replace IC501.


Check the R234, and thenreplace IC201.


YES

YES

YES

OK

YES

NO

NO

Check and replace IC201.NO

NO

103

107

45


23

Does the signal of IC501 Pin change to H -> L -> H?

Is the voltage of IC101 Pin LPD 3.3V?


YES

YES

NO167

C. The Laser of Pick-Up doesn’t light.

Check and replace IC101.NO13


OK


24

Check the pattern fromIC501 pin to R201and then replace IC501.

4Does the focus search signalappear at FAO (point F)?

Is the IC201 pin 1.65V? Check R234.

YES

YES

YES

NO

NO


45

Does the focus search signalbetween the F+ and F-appear?

D. Pick-UP lens doesn’t move up and down.

Check a contact pointbetween the main FPC andCN101.

OK

Check and replace IC201.NO

25

Does the laser light on theP/U lens?

Does the signal appear atFAO (point F)?

Do the signals appear atthe F+ and F-?

Check and replace X501and IC501 Pin(33.86MHz) and thenreplace IC501.

Refer to “C: The laser ofPick-up doesn’t light.”

Check R201, R202 and C222and then replace IC201.

YES

YES

NO

NO

NO

92


YES

OK

Replace MechanismAssembly

Check the power inputpattern.

YES

YES

NG

Check R119 and thenreplace IC101.

NODoes the signal appear atthe point “fe”?

Check Power Voltage.(point vc: 1.65V, C701, F101:5V

E. Disc doesn’t rotate.

26

Is the Focus Servo ON?(Does Feo (point fe) signalappear?)

Do (A+C), (B+D) signalappear at IC101 pin ,

?

YES YES

NO7

8

NO

Is the Tracking Servo ON?(Does TEO (point te) signalappear?)

Do E, F signal appear atIC101 pin , ?

YES

NO

9

YES

Is TOC area on the discread? (Does LED flicker?)

Does the other discoperate normally?

Normal Disc is defective.

YESYES

NO

10NO

Do RFAC signal appear?

Is Spindle Servo ON?(Does SPO signal (R241)appear?)

YES YES

NO

NO

NODoes (A+C), (B+D) signalappear at IC101 pin ,

?7

8

Replace IC101.

Replace IC101.

Replace IC501.

Replace Main CircuitBoard or MD Ass’y.

NO

Refer to C.(The Laser of Pick-Updoesn’t light.)

F. TOC isn’t read.

A B C

1

2

3

4

28

BLOCK DIAGRAM

SpindlemotorDrive

AN8498SH

RFAmplifier

LA9239

Focusactuator

Drive

Trackingactuator

Drive

SlidemotorDrive

AT-M08-0430

LPH-222A

Slide motor

DigitalServoSignal

Processor

CD-ROMDecoder

&Interface

SystemController

HMS895300

XTAL

33.86MHzXTALCK

DigitalSignal

Processor

AudioSignal

Processor

Flash MemoryAT49F512TSOP

HOST COMPUTER

OpticalPick-up

24C6989050

Spindlemotor

A B C D

1

2

3

4

5

5

011013 001

012

009008

004

A01

005

PBM00(MAIN C.B.A)˚

428

428428

428

428

435435

006

A00

003

010

EXPLODED VIEW

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