logic unit
TRANSCRIPT
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CHEELTOK ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
Pub l i ca t ion No 7-AS182-1
LOGIC UNIT
TYPE
7-AS1
82-1
This
Manual
complies
with British
Civil Airworthiness Requirements,
Section A. Chapters
A6-2.
The
t echni cal
accuracy
of this
manual
has
been verified and
certified
correct
Date 5th
June
1991
C.4A
D e s i g n Approval
No
DAI/2613/48
C
H
E
LTO
N
(ELECTRO STAT ICS) L IM ITED
Fieldhouse
Lane Marlow Buckinghamshire SL? 1 R England
Teiephone:
0628 472072 Telex: 849363 Fax.
0628
482255
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
Publication
No 7-AS182-1
-
RECORD
OF
PERMANENT REVISIONS
I n c o r p o r a t e d c n d e r CAA Design Approval N o . DAI/2613/48
Record o f Permanent Revisions
Page 1
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CP-ELTr3N
ELECTROSTATICS)
LIMITED
OVERIIAUL
MANUAL
Publication No 7-AS182-1
appl i cabl e t o t he i ni t i al cer t i f i cat i on must be recorded
Temporar y Revi si on I nser t i on
Numb er Dat e
RECORD OF TEMPORARY
REVISIONS
I ncorpor at ed under C A A Desi gn Appr oval No. DAI/2613/48
on
separat e recor d sheet s.
3
Cancel l ed
BY Dat e
I
Record o f Tempor ar y Revi si ons
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CHELTCN ELECTROSTATICS) LIMITED
O V E R H A U L
MANUAL
P u b l i c a t i o n No
7 - k S 1 8 2 - 1
L I S T OF EFFECTIVE
PAGES
SUBJ ECT
Ti t l e Page
Recor d of Per manent Revi si ons
Record of Tempor ar y Revi si ons
L i s t of Ef f ect i ve Pages
( t h i s
page)
Ser vi c e Bul l et i n L i s t
Tabl e
of
Cont ent s
Text and I l l us t r at i ons
I l l us t r at e d Par t s Li s t
Page 1
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Service
B u l l e t i n
Number
CHELTON ELECTROSTATICS) LIMITED
OVERHA JL MANGAL
P u b l i c a t i o n No 7-AS182-1
SERVICE BULLETIN LIST
Revision
Numb
I:
Date
I n c o r p o r a t e d
i n Manual
I
.c r
po ated
BY
Service Bulletin L i s t
P a g e 1
2 3 ~ 1 7 ~ 2 5 u n 5 / 9 1
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CHELTON (ELECTROSTATICS ) LIMITED
OVERHAEL MANUAL
P u b l i c a t i o n
No
7-AS182-1
Descr i pt i on
Oper at i on
Logi c Board Ass embl y
Power Suppl y Boar d Assembl y
Maxi mum Di mensi ons and Mass
Power Suppl y
Logi c
Board Assembl y
I nt er f aces
Dat a
TABLE
OF CONTENTS
DESCRI PTI ON OPERATI ON AND DATA
EQUI PMENT OVERHAUL
Di sass embl y
Access
t o
Component s
Removal
of
Connect or
J1
Removal
o f
Connect or
5 2
Removal
of
Connect or
53
Removal
of Logi c
Boar d Assembl y
Removal
of
Power Suppl y Board Assembl y
Removal
of
Separ at or Pl at e Assembl y
Cl eani ng
I nspect i on
Repai r
Ass emb y
Repl aci ng Separator Pl at e Ass embl y
Repl aci ng Power Suppl y Boar d Ass embl y
Repl aci ng Logic Boar d Assembl y
Repl aci ng Connect or 53
Repl aci ng Connect or
5 2
Repl aci ng Connect or
J1
Repl aci ng Mount i ng Base
Fi t s and Cl ear ances
St or age
TESTI NG
Test Equi pment
Test Pr ocedur e
I nt er nal Power Suppl y Faul t s
Tr oubl e Shoot i ng
I LLUSTRATED PARTS LI ST
Tabl e 1
-
Logi c Uni t
7-AS182-1
Tabl e 2
-
Separ at or Pl at e and PCB Ass embl y
Tabl e 3
-
Separ at or Pl at e Assembl y
Tabl e
4
-
Logi c Boar d Assembl y
Tabl e
5
- Power Suppl y Board Assembl y
Paragr aph
Page
8
3
8
10
A
12
A
(1)
12
A
( 2 ) 12
A
( 3 )
12
A 4 ) 1 3
A
5 )
13
A
( 6 )
13
.4
( 7 )
13
B
14
C
1 4
I?
14
E
15
E
( 1 ) 15
E ( 2 )
15
E 3 ) 1 7
E 4 )
1:
E
( 5 ) 18
E 6 )
18
E
7 )
18
F
19
G
19
A
20
B
20
C
2 3
D
23
1 0 0 1
1003
1005
1007
1009
i O l l
Tabl e
of
Cont ent s
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CfIELTGN
ELECTROSTATICS
LIMITED
OVERHAUL MANUAL
Pub l i ca t ion No 7-AS182-I
1
CESCRIPTION. OPERATION AND DATA
A . Gener al Descri pt i on
Logi c Cont r ol Uni t
7-AS182-1
s
desi gned
to
oper at e as
a
t uni ng cont ro l l er
f or t he
1 2 - 1 2 6
and
12-190-11
ant ennas. when used i n conj unct i on wi t h t he
ARC182 Radio.
The Logi c Cont r ol Uni t s t erm nate and moni t or t he r adi o’ s CLOCK and DATA
cont r ol l i nes . bot h of whi ch ar e t wi st ed- pai r bal anced- l i nes. The
t r ansm t t ed dat a i s capt ur ed and val i dat ed bef or e i t s f r equency cont ent i s
t r ans l at ed i nt o a par al l el l i ne,
ant enna t uni ng wor d.
wor d i s ampl i f i ed t o pr ovi de each l i ne wi t h ei t her ,
a pos i t i ve 28
V
dc
l evel .
or
a
negat i ve
5 V
dc l evel .
associ at ed ant enna t uni ng coi l t o be i n c i r c ui t - PI N di ode r ever se bi ased.
A negat i ve 5 V dc l evel causes t he associ at ed PI N di ode
t o
be out of
ci r c ui t
-
PI N di ode f or war d bi ased.
The ant enna t uni ng
A pos i t i ve
28
V dc l evel causes t he
B. Mechani cal Descri pt i on
The uni t compr i ses t wo pr i nt ed ci r cui t boar d assembl i es t hat ar e separ at ed
by
a met al pl ate. These ar e cont ai ned i n a machi ned al um ni um
box
whi ch
pr ovi des both envi r onment al and EMC scr eeni ng. The el ect r oni c ci r cui t r y i s
al l sol i d st at e and t he uni t can be mount ed, r emote f r omt he ant enna i t i s
desi gned to serve, i n any at t i t ude. F i gur e
1
shows t he uni t general
assembl y.
The l ogi c conver s i on c i r cui t s ar e al l cont ai ned on a s i ngl e pr i nt ed c i r cui t
boar d. Thr ee mul t i pi n connect or s pr ovi de i nput connect i ons f r om t he
ai r cr af t power suppl y and t he t r anscei ver . and out put
dc
i i nes
t 3
t he
ant enna.
f i l t ercons t hr ough an i sol at i ng pl at e t o t he r espect i ve connect or pi n or
power suppl y t er m nal . Fi gur e
2
shows t he uni t schemat i c di agr am
A l l connect i ons t o and f r om t he Logi c Boar d Assembl y pass vi a
The Logi c Cont r ol Uni t has t hr ee exter nal i nt er f aces made vi a m ni at ur e
c i r cul ar connecto rs :
a> Cont r ol i nput s
-
ser i al c l ock and dat a. di f f er ent i al pai r s f r omt he
cont r ol l i ng r adi o and addr ess decode. bl ock sel ect i on si gnal s made by
wi r e l i nks at t he cabl e end connect or .
b) Cont r ol out put s
-
ei ght cont r ol l i nes , pl us zero vol t s r et ur n, t o the
ant enna.
and i s capabl e of del i ver i ng
+28
V dc o r - 5 V dc ( r , omnal )
Each cont r ol l i ne i s associ at ed wi t h an ant enna tuni ng segment
c) Power i nput
+28
V dc pl us ear t h re t ur n, f r omt he ai r c ra f t ‘ s power
suppl y
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CKELTON ELECTROSTATICS) LIMITEO
OVERHAUL MANUAL
P u b l i c a t i o n No 7-AS182-1
FIGURE
1 :
Logic Control
Uni t 7 - A S 1 8 2 - 1 General Assembly
A
R
C
1
8
2
J1
(28V)
J2
A
N
T
53 E
N
N
A
LOGIC
CONTROL
BOARD
=
FILTERCON
FIGURE
2 : Logic
C o n t r o l Uni t Schematic Xagram
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
Publication No
7-AS182-1
C. Dper at on
( 1) Logi c Boar d Assembl y ( r ef . Fi g. 3)
The Logi c Boar d Assembl y ut i l i ses a m cr opr ocessor wi t h ext ernal
pr ogr am and dat a memor y as t he cont r ol l i ng el ement f or dat a r ecept i on.
val i dat i on. t r ansl at i on and ant enna dr i ve out put . Dat a and cl ock
s i gnal s ar e i nput t o t he boar d as di f f er ent i al s i gnal s whi ch ar e
t er m nat ed and l evel t r ans l at ed by di f f er ent i al ampl i f i er s . The
pr ocessor moni t or s t he cl ock s i gnal , capt ur es and st ores dat a.
awai t i ng t he end
of
t he message bef ore val i dat i ng t he message cont ent .
Val i dat i on consi st s of t est i ng t he f r equency cont ent of t he message
data
t o ensur e t he hundr eds, t ens,
uni t s
and deci mal MHz val ues ar e
t r ue bi nary coded val ues.
I n
t he
7- AS182- 1
Logi c Uni t t he command word
i s checked f or val i di t y.
The DATA and CLOCK i nput s
f r om t he r adi o are f ed vi a 22 kl;z
r es i s t or s
R1. R2. R3 and R4 t o di f f er ent i al ampl i f i er s I C1- C and I C1- D. The
l i nes ar e hel d at 0 vol t s by res i s t or s R5, R6. R7 and R8.
The out put f r om I C1- C i s f ed di r ec t t o I C2, pi n 10, and t he out put
f r om I C1- D i s f ed to I C2. pi ns 11 and
12.
The out put l i nes are hel d
at
+5
vol t s vi a r esi st or s R18 and R19 and are decoupl ed by capaci t or s
C7 and C8.
f C2. pi ns 14. 15. 16 and 17 are connect ed vi a f i l t ercons t o
f l
pi ns L.
K,
J
and S r espect i vel y, wher e t hey may be wi r e l i nked to gr ound
or
l ef t open ci r cui t t o sel ect t he r equi r ed decode t abl e t o be used
i n
a
par t i cul ar i ns t al l at i on - see F i g. 6A and 6B.
I C2. an ei ght - bi t m cropr ocessor . obt ai ns i t s progr am and t uni ng dat a
f r om an 8K x 8 memor y,
IC4.
An e i ght - bi t addr ess l at ch, I C3, i s
i nt er f aced bet ween I C2 and I C4. t he addr ess l at ch enabl e bei ng t aken
t o I C2. pi n
30.
The cl ock si gnal at I C2, pi ns 18 and
19,
i s f r om
cr yst al XTALl and i s decoupl ed by C9 and C10.
The ant enna out put dri ve f unct i on i s i mpl ement ed by ei ght i dent i cal
c i r cui t s us i ng oper at i onal ampl i f i er s to per f or m l evel t r ans l at i on and
t r ans i s t or ampl i f i er s to del i ver t he requi r ed l evel s t o t he ant enna.
Each of t he ei ght out put s f r om I C2. pi ns 1 t o
8
i nc l us i ve. i s f ed to
one i nput of an oper at i onal ampl i f i er i n ei t her
IC5
or
IC6.
The
second i nput of each ampl i f i er i s hel d at appr oxi mat el y +2. 5 vol t s by
r es i s t or s
R 2 3
and R24 and i s decoupl ed
by
C16.
oper at i onal ampl i f i er i s t hen t aken vi a a cur r ent l i m t i ng r es i s t or
t o
t he base of a t r ans i s t or , t he col l ec tor of whi ch i s t aken vi a a
f i l t er con t o t he appr opr i at e pi n of connect or 53 The em t t er of each
t rans i s to r i s t aken di r ect to
- 5
vol t whi l e the col l ect or i s hel d a-t
+28 vol t s vi a a
10
kohm resi s to r .
I n
each case l ogi c 0 at t he pi n of
I C2 r esul t s i n t he assoc i at ed pi n
of
connect or 53 bei ng hel d at LO
vol t s . Conver sel y, l ogi c 1 at
I C 2
r esul t s i n t he pi n bei ng hel d HI.
The out put of each
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n
No
7-AS182-1
Fur t her c i r cui t r y pr ovi des
+5
vol t moni t ori ng and ensures t hat t he
pr ocessor r ecei ves a reset of cor rect l evel and dur at i on i f t hi s
suppl y vol t age devi at es f r om i t s to l er anced l evel .
The r eset vol t age at
I C2.
pi n 9 ,
i s
appl i ed f r om t he
+5
vol t s suppl y
vi a a power moni t or c i r cui t , I C1- A. I C1- B and t r ansi st or TR1. On
swi t chi ng on t he j unct i on of C13,
R20 and R21 wi l l be hel d hi gh unt i l
C13 becomes char ged t hr ough R21.
This l ong t i me- const ant ensur es t hat
I C2 wi l l become f ul l y condi t i oned. Pr ovi di ng t he
+5
vol t s suppl y does
not var y by mor e t han appr oxi mat el y k 0 . 5 vol t s , t r ans i s t or TR1
i s
non-
conduct i ng and I C2, pi ng, i s hel d i n t he l ow condi t i on.
If
t he +5
vol t s var i es out s i de t hose l i m t s the ouput f r om ei t her I C1- A or I C1- B
wi l l change causi ng TR1
t o
swi t ch on. Under t hi s condi t i on
C 1 3
i s
di schar ged t hr ough TR1 and I C2 pi n 9 i s hel d h igh .
var i ous ICs i s provi ded by capaci t or s
C1
t o
C 6 ,
C11, C 1 2 , C14 and C15.
Decoupl i ng cf t he
Page 4
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7-25 Jun 5 / 9 1
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R3
22K
CLKHI p3 e
CLK LO P I-
4 3 4
Z ?K
RF F LE CT P sg
P 2 2 4
P 230 -J
IC2
MD3OC31
0”
R12
IOK
ov ov
T” T’”
+S V
T
I
‘II’
I I I ^___ ._
T R7
OP l 6 LM (E ,
R40
2 M o l O
10K
F u l
- 0 P 1 7 O S ( ? ’
+28V
CJ
1ov
t26” PO
+sv PB
IOK
Iooo
I
0”
0”
P7
PI0
-sv PB 0 PlS
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CHELTON
ELECTROSTATICS)
LIMITED
OVERHAUL
MANUAL
Publication
No 7 - A S 1 8 2 - 1
2) Power Suppl y Boar d Assembl y. ( r ef . Fi g. 4)
The power suppl y f or t he l ogi c uni t i s
a
f l yback, swi t ched- mode power
conver t er
SMPC)
s ys t em f ed f r on; t h e ai r c raf t ' s
28
vol t suppl y . The
i nput i s taken vi a di ode
Dl .
whi ch pr ovi des r ever se pol ar i t y
pr otect i on, and i nductor L1 t o regul at or IC2. pi n 1. I nduct or L1 and
capac i t or
C1
f o rm an
R F I
f i l t er and s uppl y i nt er upt i on r es er voi r , wi t h
di ode D8 as a t r ansi ent suppr essor. The out put f r om IC2. pi n 3 . i s 12
vol t s s et b y r es i s t or s R 1 and R2 and decoupl ed by capac i t or
C2.
i s f ed as Vcc t o
IC1.
an
SMPC
cont r o l l er , whose out put at pi n 11 i s
taken v ia resistor R8 to TR1. The dr ai n of T R1 i s taken to the +28
vol t i nput t hr ough t he pr i mar y of t r ansf ormer T1.
OWOFF
swi t ch whose mark/ space r ati o i s cont r ol l ed
by
t he out put
wavef or m of IC1. Res i s t or s R10 and R11, decoupl ed by capac i t or C5,
f o r m a cur r ent l i m t er i n t he em t t er of T R 1 . The cl ock f r equency f or
IC1
i s s et by R9 and C 4 whi l e t he combi nat i on of R 3 ,
R4
and
R5
acts
as
a s hor t - c i r c ui t cur r ent - l i m t er f o r t he I C1 ci r c ui t r y.
This
T R 1 operat es as an
The secondar y wi ndi ngs of t r ansf ormer T1 pr ovi de out put s of
+5
vol t s
f or t he l ogi c ci r c ui t s . wi t h
+28
vol t s and
- 5
vol t s suppl i ed t o swi t ch
t he PIN di odes i n t he associ at ed ant enna. In eac h ci r c ui t , di ode
D4,
D5 or D6 i n conj unct i on wi t h capac i t or
C7. C8
or C 9 f or m r ect i f i er
ci r cui t s t o pr ovi de a dc out put . To ensure a smoot h accur ate
+5
vol t
s uppl y f o r t he l ogi c c i r c ui t s , t he +5 vol t s f r om
D4/C7
i s t aken
t hr ough r egul at or
IC3
bef or e bei ng appl i ed to the l ogi c c i r cui t s .
Not e t hat t he 0 vol t l i ne f or t hese suppl i es i s kept i sol at ed f r om t he
28
vol t suppl y ret ur n l i ne to hel p pr ovi de good EMC per f or mance.
The
out put vol t ages ar e det erm ned by t he
ON/OFF
r at i o
of
current
t hrough t r ansf ormer TR1 pr i mar y, t hi s r ati o bei ng devel oped by t he
swi t chi ng of TR1
b y
IC1.
The vol t age devel oped acr oss t he f our t h,
f l yback, wi ndi ng of t r ansf ormer T1 and r ect i f i ed by di ode
D7
and
capac i t or
C10,
i s f ed back t o
IC1
as a cont r ol vol t age.
Any
var i at i on
of
t he markl space r ati o
of I C 1
out put . al t er s t he t i me cur r ent f l ows
t hr ough t he pr i mar y of t r ansf ormer T 1 . t o keep t he out put vol t ages
wi t hi n l i m t s . The i ni t i al val ue of t he out put vol t ages i s pr e- s et by
adj ust ment of
VR1.
The combi nat i on of r esi st or s R 1 5 ,
R14
and R6 and
capac i t or s
C12
and
C3
def i nes t he l oop st abi l i t y and r esponse t i me.
Page 6
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I
TERMINALS
B
ov--
FE
12K
C6
100
- Rl. lK5
--I
:
R15. OK
-~----e
$12
‘IWIn
TERMINALS
C
-- +6V
1ov
R13
220
-I-
T
I
u----l
14.470
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C m L T O N ELECTROSTATICS)
LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n No 7-ASl82-1
T echnica l
Dat a
(1)
Maxi mum Di mensi ons and Mass
Lengt h
59.8
mm wi dt h
90.9
mm dept h
59.5
mm mas s
0.8
kg
( 2 ) Power Suppl y
( a) I nput vol t age 16 t o 32 vol t s dc
(b )
Rever se pol ari t y and t r ansi ent vol t age pr ot ect ed
c ) I sol at ed out put s : +5
V k
10 at 100
m A
- 5 V
nom nal at 1
A
+28
V nom nal at
5
mA
( d ) Power I nt err upt
-
cont i nui t y
of
operat i on f o r i nt er r upt s i n pr i me
suppl y
of
2 8 vol t s f or up t o
50
ms.
( e) Maxi mum cur r ent r equi r ed f r om ai r cr af t suppl y - not gr eat er t han
850 mA at 16
V.
3) L o g i c
Board Assembly
(a ) Dat a Bus: Dat a (+) +5 V o r
0
V
Dat a ( - 1 0
V
or +5
V
Cl ock
(+) +5 V
o r
0 V
C l o c k ( - 1 0 V or +5 V
The act i ve st at e
i s
l o g i c a l l y z er o,
i . e. s i gnal
HI
at
0
V
ar.d
si gnal LO at +5 V.
( b ) Message Lengt h: ( r ef . Fi g 5 )
Fi ve wor ds. f i r st word of seven bi t s . t hen f our wor ds of ei ght bi t s .
( c ) Dat a rat e:
10 kHz
d)
Dr i ver out put s each l i ne:
HI
>
+22
V at 0.5
mA
LO < - 4 V at 1 1 5 mA
( e) Power moni t or:
4. 5
V
<
V o k < 5 . 5 V wi t h t ol er ance k 5
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8/17/2019 Logic Unit
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COMMAND DATA
m
TRANSFER
A--
TRANSFER
PULSE
PULSE
+2.5 V (MN)
+0.75 V (MAX)
1U
SIX CLOCK PULSE S
SEVEN CLOCK PULSES
PART OF CLOCK + EXPANDED TO SHOW THE FORMAT OF THE CLOCK DURING COMMAND WORD AND DURING DATA WORD
COMMND
DATA
CLOCK +p
-4
llllllln
CLOCK 4
llllll .llIUlll (IllUlll Ill llllllln
I
1
niiiiiin ~iiiiiin yuun llllllln jllulln n
s
s
I
I 1 1 1 1 I I
I Lo-.
ullllllu 11111111llllllll IIIIIIU
llllllu u
c $i?
d g ::
DATA + :
1
I
llllllu JIIIIIIU ~llllllu 111111~llllnu ~IIIIIIU
I
1
I I
I 1 I I
t ,
2
II---l
I
1
+
I
I
I
i
I
2
r::
I 1 I
I
I
,llru 1
I pl
1 I
-4
COhMAND
DATA DATA
DATA
DATA
COMMAND COMMAND
DATA DATA
DATA
DATA 5
2
::
WORD
WORD
WORD WORD
WORD
WORD
WORD
WORD WORD
WORD
VUIRD
&
rQ
rz
I
f
PRIMARY MESSAGE
1 1
bJw
CONFIRMATION MESSAGE
I
h,
I?
I-
I
COMP;ETi MESSAGE
I
:.
I
tl
z
I *
DATA - :
+ ::
I
k?
ULI u I
uu
1
1 1
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8/17/2019 Logic Unit
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CHELTON
ELECTROSTATICS)
LIMITED
OVERHAUL N f A L
P u b l i c a t i o n Na
7 - A S 1 8 2 - 1
( 4 )
I nt er f aces
:
(a)
J1
I nput Connect or
PI N SI GNAL DESCRI PTI ON
A
B
C
D
E
H
K
L
M
S
T
U
DATA +
DATA
-
CLOCK
+
CLOCK
-
GROUND
GROUND
SELECT 3
SELECT
2
SELECT 1
GROUND
SELECT
4
GROUND
GROUND
I nput di f f er ent i al pai r wi t h DATA
I nput di f f er ent i al pai r wi t h DATA
+
I nput di f f er ent i al pai r wi t h CLOCK
-
I nput di f f er ent i al pai r wi t h CLOCK
+
OUTPUT gr ound l i nk f or pi n
S
I NPUT Ai r f r ame gr ound
I NPUT decode sel ect l i nk t o pi n
T
I NPUT decode sel ect l i nk t o pi n U
I NPUT decode sel ect l i nk
t o
pi n
M
OUTPUT gr ound l i nk f or pi n L
I NPUT decode sel ect l i nk t o pi n E
OUTPUT gr ound l i nk f or pi n
J
OUTPUT gr ound l i nk f or pi n
K
Cl ock and dat a l i ne i nput i mpedances 2 2
k 2
*
Pi ns L.
K.
J and S ar e wi r e l i nked t o gr ound or l ef t open ci r cui t
t o
sel ect t he requi r ed decode t abl e t o be used i n a par t i cul ar
i ns t al l at i on
-
see Fi g. 6A and
6 B .
( b )
52 Power I nput Connect or
PI N SI GNAL DESCRI PTI ON
A
+ 2 8 V
B 0
v
C GROUND
I NPUT Ai r craf t
dc
suppl y
I NPUT Ai r cr af t suppl y 0 V return
I NPUT Ai r f r ame
(c )
53
Out put Connect or
PI N SI GNAL DESCRI PTI ON
A SEG. A
B SEG.
B
C SEG. C
D SEG. D
E SEG.
E
F
SEG.
F
G
o v
H GROUND
J
SEG.
J
K
SEG.
K
OUTPUT Ant enna s egment A dr i ve
OUTPUT Ant enna segment
B
dr i ve
OUTPUT Ant enna s egment C dr i ve
OUTPUT Ant enna s egment D dr i ve
OUTPUT Ant enna segment
E
dr i ve
OUTPUT Ant enna segment
F
dr i ve
OUTPUT Ear t h Ret ur n
SCREEN
OUTPUT ant enna s egment
J
dr i ve
OUTPUT Ant enna segment
K
dr i ve
Segment dr i ve i mpedances, posi t i ve
10
kn negat i ve
6 0 2
Page
10
2311
7125
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CKELTON ELE TRO STAT1 LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n No 7 - A S 1 8 2 - 1
- -
A
B
C
D
E
F
G
H
J
K
- -
L
J3
7-AS1
82-1
nGlC
--.-
:
X
CONTROL
IIT
(21 UN
-0
-4
-0
-4
-0
E
U W L
I
FIGURE
6A
System Interconnect: ARC182 Radio, 7 -AS 182 -1
Logic
Unit and 12-126 Antenna
rl
1
7-AS182-1
r
OVEFULL SCREEN
-----------------
ICI
FIGURE
6B:
System Interconnect: ARC182
Radio,
7-A S18 2-? Logic Unit and 1 2 - 1 9 0 - 1 1 Antenna
Page 11
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CHELTON ELECTROSTATICS) LIMITED
O V ERH A U L MANUAL
P u b l i c a t i o n No 7-AS182-1
2 EQUI PMENT OVERHAi i L
CAUTI ON
:
THI S UNI T CONTAI NS ELECTROSTATI C DI CHARGE SENSATI VE ( ESDS) DEVI CES.
ESDS HANDLI NG PRECAUTI ONS MUST BE OBSERVED DURI NG
I TS
DI SASSEMBLY
AND
ASSEMBLY.
A Di sassembl v
Not e
1:
r ect i f y any def ect est abl i shed by maki ng the f unct i onal t est det ai l ed
i n
Sect i on
3 of
this
manual.
The f ol l owi ng pr ocedur es ar e t o
be
car r i ed out onl y as necessar y t o
Not e 2 :
No
spec i al
t ool s
ar e requi r ed f or di sassembl y.
Not e
3:
Except wher e st at ed ret ai n al l i t ems f or r eassembl y.
(1)
Access t o Component s
-
r ef er t o I PL Fi g.
1.
(a) Remove f our scr ews 2 5 ) .
( b ) Remove Mount i ng Base ( 5) t aki ng car e not t o damage ' 0' r i ng (20)
c ) Li f t Separ at or Pl at e and PCB Assembl y ( 1 0 ) c l e a r
of
Box ( 15) t aki ng
car e not t o st r ai n t he wi r i ng connect i ons to Connect ors J1
( 3 5 )
and
53
( 9 0 ) and t o F i l t er cons
FC22
and FC23.
Not e: Ensur e 0 r i ngs ( 2 0 ) are r et ai ned i n r ecesses i n Mount i ng
Base
5 )
and
Box
( 15) and ar e not l i abl e t o damage.
( 2 )
Removal of Connect or
J 1
( a ) Carr y out operat i ons det ai l ed i n paragr aph
A ( 1 )
( b )
On Separat or Pl at e unsol der wi r es f r omconnect or
J1 (35)
at
F i l t er cons FCl O
t o
FC13 i ncl usi ve and FC17
t o
FC20 i ncl usi ve
-
r ef er t o I PL Fi g. 3 f or f i l t er c on pos i t i ons .
c)
Remove s cr ew
115)
t o f r ee sol der t ag
110)
d )
Remove f our s cr ews
4 5 )
and washer s 5 0 ) .
( e ) Remove Connect or J 1 (35 ) wi t h gasket 4 0 ) f r om Box
15).
Di scard
gasket .
( 3) Removal
of
Connect or 52
(a) Carry
o u t
oper at i ons det ai l ed i n par agr aph A ( 1 )
( b ) Remove t hr ee sc r ews
65).
one sc r ew ( 75) . one nut (85 )
and
f our
washer s ( 70) .
Page
12
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CEELTON ELECTROSTATICS) IMITED
OVERHAUL
MANUAL
Publication No 7-AS182-1
c )
I n cent r e recess of
Box
( 15) unsol der r ed and bl ack wi r es f r om
Fi l t er cons FC22 and FC23.
d)
Remove Connect or 32
( 5 5 )
and gasket
(60)
f r o m
Box
(15) . Di scard
gasket .
( 4 ) Removal of Connect or 5 3 .
( a) Car r y out oper at i ons det ai l ed i n par agr aph AI l ) .
( b) On Separat or Pl at e unsol der wi r es f r omConnect or 3 3 90) at
Fi l t er c ons FC1 t o FC9 i ncl usi ve and FC21.
( c) Remove scr ew ( 115) t o f r ee sol der t ag ( 110) .
d)
Remove and r et ai n f our sc r ews ( 110) and washer s ( 1 0 5 ) .
( e) Remove Connect or 53
90)
and gasket
95)
f r o m
Box
( 15) . Di scar d
gasket .
(5)
Removal of Logi c Boar d Assembl y
-
r ef er t o I PL Fi gs . 2 and 4 .
( a) Carr y out operat i ons detai l ed i n paragr aph A(1).
( b) Car ef ul l y unsol der wi r es f r om t went y one t er m nal assembi es.
c) Suppor t i ng Separ at or Pl at e and PCB Assembl y, I PL Fi g. 1 ( 1 0 ) . t o
avoi d st r ai n on wi r i ng connect i ons. r emove
s i x
scr ews
( 1 5 1 ,
cr i nkl e washers
(20)
and spacer s ( 25) secur i ng Logi c Board
Ass embl y
(10)
t o Separ at or Pl at e Assembl y
5 ) .
d)
Remove Logi c Board Assembl y.
6) Removal of Power Suppl y Board Assembl y - r ef er t o I PL Fi g. 2.
( a) Carr y out operat i ons detai l ed i n paragr aph
A 1 ) .
( b) Support i ng Separ at or Pl at e and PCB Assembl y, I PL Fi g. 1
101,
o
avoi d st r ai n on wi r i ng connect i ons. r emove f our scr ews (35).
cr i nkl e washer s ( 4 0 ) and spacer s
4 5 )
secur i ng Power Suppl y Boar d
Ass embl y ( 10) t o Separ at or Pl at e Assembl y
5).
c)
Ref er t o I PL Fi g.
5 ,
caref ul l y unsol der wi r es f r oms i x t erm nal
assembl i es.
I d )
Remove Power Suppl y Board Assembl y 3 0 ) .
( 7 )
Removal of Separ at or Pl at e Assembl y
-
r e fe r
t o
I PL Fi g.
2 .
( a) Carr y out operat i ons det ai l ed i n paragr aph 2A.
( b) Remove si x scr ews (15). cr i nkl e washer s (20) and spacer s ( 2 5 )
secur i ng Logi c Boar d Assembl y ( 3 0 ) t o Separ at or Pl at e Assembl y 5 ) .
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CKELTON (ELECTROSTATICS) LIMITED
OVERHAUL
W J A L
Publication N o 7 - A S 1 8 2 - 1
c)
Remove f our sc r ews ( 3 5 1 , cr i nkl e washers
4 0 )
and spacer s
45)
secur i ng Power Suppl y Boar d Assembl y
30)
t o Separat or Pl at e
Assembl y
5 ) .
d)
Ref er t o
I PL
Fi g.
3 ,
on Separat or Pl at e Assembl y caref ul l y
unsol der wi r i ng connect i ons f r omei ght een f i l t ercons and sol der
t ag.
( e) Remove Separ at or Pl at e Assembl y.
Cl eani ng
Cl ean al l met al l i c par t s wi t h i ndust r i al met hyl at ed spi r i t s or any
al cohol - based c l eani ng sol vent .
Use onl y a r ecogni sed pr i nt ed- ci r cui t - boar d cl eani ng agent t o c l ean
pr i nt ed- c i r cui t - boar ds . Do not
u s e
cor r os i ve c l eani ng agent s .
Wher e t her e
i s
evi dence
of
moi st ur e wi t hi n t he uni t car ef ul l y dr y t he
i nt er i or sub- assembl i es wi t h a hot ai r bl ower .
I nsDect i on
(1)
I nspec t al l met al l i c par t s f or :
a) Cl eanl i ness
( b) Cor r os i on
( c ) Di s to r t i on
( d )
Dent i ng
(e) Cracks
( f ) Ser vi ceabi l t y
of
scr ew t hr eads
(g )
Secur i t y of sub- assembl i es or component s not di smant l ed.
( 2 )
I nspec t a l l non- met al l i c par t s f or :
( a) Cracks, cut s or abr asi ons
( b) Per i shi ng or ot her det er i or at i on
( c )
Secur i t y
of
mount i ng.
3 ) Make a det ai l ed i nspect i on of :
(a ) Pr i nt ed- c i r cui t - boar ds
-
t r acki ng f or cont i nui t y - boar ds f or
di s t or t i on or c racki ng
-
secur i t y
of
component s.
b )
Secur i t y of i nt er connect i ng wi r i ng
-
sol der ed connect i ons ont o
pr i nt ed- c i r cui t - boar ds - al l s l eevi ng f or cor r ec t f i t and f or
det er i or at i on
-
det er i or at i on
of
wi r i ng i nsul at i on.
Repai r
Repai r i s by repl acement of def ect i ve par t s and el ect r i c l eads. Al l
scr ews and
nu rs
wi t h def ect i ve t hr eads must be r enewed. Assembl e ai l
scr ews and nut s wi t h Loct i t e gr ade CV. Sol der ed connect i ons ar e made
usi ng sol der
BS441.
gr ade K 6 0 / 4 0 t i n/ l ead.
Page
14
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CHELTON
ELECTROSTATICS) LIMITED
OVEMAUL
MANUAL
P u b l i c a t i o n
No
7-AS182-1
E Assembl y
Not e
1: Appl y Loct i t e t o t he t hr eads of al l scr ews dur i ng assembl y.
Not e
2 :
Af t er sol der i ng r epl ace conf ormal coat i ng over
j o i n t
and cur e, i n
accor dance wi t h manuf act ur er ' s i nst r uct i ons.
N. B. The coat i ng has
a
m ni mum cur i ng t i me of
2 4
hours at nom nal
t emperat ur e and hum di t y r espect i vel y.
Not e
3 :
No speci al t ool s ar e r equi r ed f or assembl y.
Mat er i al s r equi r ed: Loct i t e Gr ade
CV
Resi n- cor ed sol der RS441 gr ade
K, 6 0 / 4 0
t i n/ l ead
Conf ormal coat i ng. Dow Cor ni ng 1- 2577 ( or equi val ent )
(1)
Repl aci ng Separ at or Pl at e Assembl y
( a) Ref er t o Fi g. 8 Sol der wi r i ng connect i ons f r omConnect ors
J1
and
5 3 ,
Logi c Boar d and Power Suppl y Boar d t o f i l t er cons and sol der t ag.
CAUTI ON
:
I N OPERATI ONS ( b) AND ( c) . ENSURE SPACERS
4 5 )
AND
2 5 )
ARE
POSI TI ONED W TH THEI R TAPERED ENDS AGAI NST THE TRACK SI DE
OF
THE POWER SUPPLY BOARD
( 3 0 )
AND THE LOGI C BOARD (10 )
RESPECTI VELY. ENSURE W RES FROM BOARD ASSEMBLI ES CAXNOT BE
TRAPPED.
( b) Posi t i on Power Suppl y Boar d
( 3 0 )
on same si de
of
Separ at or Pl at e
5 ) as wi r i ng f r omConnect or s J1 and 5 3 , wi t h f our spacer s bet ween
Separ at or Pl at e and Power Suppl y Board. Secur e Power Suppl y Boar d
Assembl y and spacer s t o Separ at or Pl et e Assembl y usi ng f our scr ews
( 3 5 )
and cr i nkl e washer s
( 4 0 ) .
c )
Posi t i on Logi c Boar d (10 ) on opposi t e si de
of
Separ at or Pl at e
5 )
wi t h s i x spacer s
( 2 5 )
bet ween Separat or Pl at e and Logi c Boar d.
Secur e Logi c Boar d and s pacer s t o Separat or Pl at e usi ng si x
S C K ~WS
( 1 5 )
and cr i nkl e washer s
2 0 ) .
( 2 ) Repl aci ng Power Suppl y Boar d Assembl y
Ascer t ai n i ssue st andard of Power Suppl y Boar d t o be f i t t ed by
r ef erence t o t he pcb assy out l i nes shown i n I PC Fi gs. 5A and 5B.
Carr y out operat i ons ( a) or
( b )
as appr opr i at e.
( a) Power Suppl y Boar ds, Par t
No
19133, pr i or t o i ssue F
i ) Ref er t o I PL Fi g. 5 . Feed wi r i ng connect i ons f r om Fi l t er cohs
FC14. FC15. and FC16 t hrough hol e X i n Power Suppl y Boar d.
CAUTI ON
:
I N OPERATI ON
ii) ENSURE
SPACERS
( 4 5 )
ARE POSI TI ONED W TH
TAPERED END AGAI NST TRACK
SI DE OF
POWER SUPPLY BOARD.
-
8/17/2019 Logic Unit
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL
MANUAL
P u b l i c a t i o n No 7 - A S 1 8 2 - 1
LOGIC BOA RD ASSEMBLY
I C+ C- D+ D- L3 L2 L1 L4
4j
+S
+28
OV
P3 P4 P l P2 pp P21
PM
PZ3
PE
FE P9 m Pl UP 13 8 P14CPlSD P16E P17F PlBK PI IJ P19H
I
I - l l
t w w o y ; $ r g
z u
g z g z
>
J1
FC16 FC2
FClO-
FE3
F
C15
FC11-
FCl4
7
C12
YELLOW
FC13
-
SEPARATOR
FC1
F
E
PLATE
ASSEMBLY
H
ORANGE
J
F C D E
L
pwH
FC
o
POWER SUPPLY
BOARD
ASSEM ELY
J
-
RED F M 2
BLACK FC23
GREEN-
t
j
W
53
U
f
Figure 7
Internal Wiring Diagram
VIOLET
BLACK
Page 16
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL
W A L
Publ i ca t i on No 7-AS182-3
( i i ) Ref er t o I PL Fi g. 2. Taki ng car e not
t o
t r ap wi r i ng. pos i t i on
Power Suppl y Boar d ( 30)
on
Separ at ar Pl at e
( 5 )
wi t h f our
spacer s ( 4 5 ) bet ween boar d and Separ at or Pl at e. Secur e wi t h
f our s cr ews ( 3 5 ) and cr i nkl e washer s
(40)
( i i i ) Ref er t o Fi g. 8 and I PL F i g. 5 A . Sol der wi r i ng connect i ons f r om
Fi l t ercons FC22 and FC23 i n Box,
t o
t erm nal post s A and B on
Power Suppl y B o a r d .
( i v) Sol der wi r i ng connect i ons f r om Fi l t ercons FC14. FC15 and FC16
on Separ at or Pl at e t o ter m nal post s F.
C and D on Power Suppl y
Boar d and bl ack l ead f r om sol der t ag t o t er m nal post E.
( b ) Power Suppl y Boar ds, Par t No 19133. i ss ue F onwar ds
(1)
Ref er t o F i g. 8 and I PL F i g 5B. Sol der wi r i ng f r omFi l t er cons
FC22 and FC23 on Box and f r om FC 14. FC15. and FC16
on
Separ at or Pl at e, t o t er m nal post s A.
13,
C,
D
and F. Sol der
bl ack l ead f r omsol der t ag t o t er m nal post E
on
t r ack s i de of
Power Suppl y Boar d.
CAUTI ON
:
I N OPERATI ON ( i i ) ENSURE SPACERS ( 4 5 ) ARE POSI TI ONED W TH
TAPERED END AGAI NST TRACK SI DE OF POWER SUPPLY BOARD.
( i i ) Ref er t o I PL Fi g. 2 . Taki ng car e not t o tr ap wi r i ng, posi t i on
Power Suppl y Boar d 3 0 ) on Separ at or Pl at e 5 ) wi t h f our
spacers
( 4 5 )
bet ween boar d and Separ at or Pl at e. Secur e wi t h
f our scr ews
3 5 )
and cr i nkl e washer s
4 0 )
3 ) Repl aci ng Logi c Board Assembl y
( a) Ref er t o I PL F i g.
3
and posi t i on wi r i ng connect i ons on Separ at or
Pl at e, f r omFi l t ercons FC1 to FC8 i nc l us i ve, FClO t o FC21 i nc l us i ve
and sol der t ag, i n di r ect i on of event ual connect i on on Logi c Boar d.
CAUTI ON:
ENSURE W RI NG POSI TI ONED AS I N
( A )
CANNOT BE TRAPPED
A N D
DAMAGED WHEN CARRYI NG OUT OPERATI ON ( B) AND THAT SPACERS ( 2 5 )
ARE POSI TI ONED W TH
THE
TAPERED END AGAI NST THE TRACK SI DE OF
THE LOGI C BOARD.
(b) Ref er t o I PL Fi g. 2 . Posi t i on Logi c Boar d Assembl y ( 10) on Separator
Pl at e 5 ) wi t h si x spacer s ( 25) bet ween pl ate and boar d. Secur e
board and spacer s t o Separ at or Pl at e wi t h
s i x
scr ews
15)
and cr i nkl e
washer s ( 20) .
( c ) Ref er t o F i g. 8 and I PL Fi g. 4. Sol der wi r i ng connect i ons pos i t i oned
i n (a) t o t er m nal post s on Logi c Boar d.
( e) Usi ng one scr ew ( 115) secure sol der t ag ( 110) on green l ead to
Box
15).
Page
17
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CHELTON ELECTROSTATICS)
LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n No
7 - A S 1 8 2 - 1
( 4 )
Repl aci ng Connect or
53 -
r ef er t o I PL Fi g.
1.
a) Obt ai n new gasket 95) and pl ace on conf i ector assembl y (901
(b)
Feed wi r i ng
l oom
t hr ough hol e i n f r ont of
Box
1 5 ) .
c) Ensur e s i ngl e l ocat i ng gr oove i n connect or i s t o t op o f box ( 1 5 ) and
secur e connect or and gasket wi t h f our scr ews 100) and shakepr oof
washer s 105).
d)
Ref er t o Fi g.
8.
and I PL F i g. 3 . Car ef ul l y pos i t i on wi r i ng l o o m and
sol der wi r i ng connect i ons to F i l t er cons FC1
t o
FC9 i ncl usi ve and FC21
on Separ at or Pl at e 5 )
5 ) Repl aci ng Connect or 52 re fer to I P L Fi g.
1.
( a) Obt ai n new gasket 60) and pl ace
on
connect or assembl y 5 5 ) .
( b ) Feed wi r i ng l oom t hr ough cent r e hol e i n
Box
15).
( c) Ensur e s i ngl e l ocat i ng gr oove i n connect or i s t owar ds t op of Box
( 1 5 ) and l ocat e usi ng t hr ee scr ews
65)
and shakepr oof washer s 7 0 )
i nt o tapped hol es i n Box f ace.
d)
I nsert one scr ew ( 7 5 ) wi t h washer 70) t hr ough remai ni ng hol e i n Box
f ace.
( e )
Ful l y t i ght en a l l scr ews.
( f ) Pl ace sol der t ag
( 8 0 )
i nsi de Box
on
sc r ew 7 5 ) and secur e usi ng nut
8 5
1
g ) Ref er
t o
Fi g.
8 .
sol der r ed and bl ack l eads
t o
Fi l t er cons
( 1 2 0 )
FC22, FC23 r espect i vel y and gr een l ead t o sol der t ag
80)
6 )
Repl aci ng Connect or J1
-
r ef er t o I PL Fi gur e 1.
( a) Obt ai n new gasket
( 4 0 )
and pl ace on connect or assembl y
(35).
( b) Feed wi r i ng l oom t hr ough hol e i n Box 15).
c) Ensur e si ngl e l ocat i ng gr oove i n connect or i s t o t op of box 15) and
secur e connect or and gasket wi t h f our scr ews
4 5 )
and shakepr oof
washer s 50).
d)
Ref er to Fi g. 8. and I PL Fi g. 3. Car ef ul l y pos i t i on wi r i ng l oom and
sol der wi r i ng connect i ons to F i l t er cons FCl O t o FC13 i ncl usi ve and
FC17 t o FC20 i ncl usi ve on Separat or Pl at e ( 5 )
( e) Usi ng one scr ew ( 1 1 5 ) secur e sol der t ag
110) on
green l ead to Box
15).
Page 18
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Jun
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
Publ ica t ion No 7 - A S 1 8 2 - 1
7 ) Repl aci ng Mount i ng Base - r ef er t o I PL Fi g.
1.
( a> Ensur e ' 0' r i ngs (20) ar e cor r ect l y posi t i oned i n r ecesses i n Box
( 1 5 )
and Mount i ng Base ( 5 ) .
(b)
Taki ng car e
not
t o st r ai n or t rap wi r i ng, posi t i on Separ at or and PCB
Ass embl y
( 1 0 )
on open f ace of Box
( 1 5 ) .
Al i gn hol es i n Separ at or
Pl at e wi t h capt i ve f i xi ng scr ews
( 2 5 ) .
( c ) Caref ul l y posi t i on Mount i ng Base (5) on Separ at or and PCB Ass embl y
( 1 0 ) . hol d i n pos i t i on and secur e wi t h f i x i ng scr ews 2 5 ) .
F Fi ts and Cl ear ances
On t he Power Suppl y Boar d Assembl y i t i s essent i al t hat t her e i s a m ni mum
of
2.0mm cl ear ance bet ween t he ci r cum er ence of Capaci t or C1 and t he edge
of t he boar d. Ref er t o I PL F i gs . 5A or
5 B .
Pack t he uni t usi ng t he manuf act ur ers packi ng mat eri al s.
avai l abl e pack t he uni t as f ol l ows:
I f
t hese ar e not
(1) F i t pr ot ect i ve caps over al l connect or s .
( 2 ) Pl ace t he uni t i n a sui t abl e moi st ur e r esi st ant pack and seal .
3 )
At t ach a l abel t o t he package pr ovi di ng t he f ol l owi ng i nf or mat i on:
( a) Uni t t ype and ser i al number
( b )
Dat e
of
l ast mai nt enance/ over haul check o r r ecei pt f r ommanuf act ur er
c) Not e of speci f i c act i ons t aken dur i ng mai nt enance/ overhaul .
St orage l i f e i s unl i m t ed when packed as above. I t i s r ecommended t hat a
uni t i n s t or e be
r emoved and t est ed at a peri od not exceedi ng 2 year s .
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
P u b l i c a t i a n
No
7-AS182-i
3 TESTING
A Test Eaui Dment
The f unct i onal t est pr ocedur e i n Sect i on A and t he procedure f or checki ng
t he i nt er nal power suppl y i n Sect i on B , r equi r e t he use of t he f ol l owi ng
t est equi pment :
(1)
Logi c Uni t Test Set QB10/8.
( 2 )
Power suppl y, var i abl e bet ween
16
V and
30
V dc ,
at 1
A .
3 ) Di gi t al vol t met er , r anges +30
V
and
- 5
V, accur acy 1% i nput
r es i s t ance 1 K .
To
car r y out t r oubl e shoot i ng as det ai l ed i n Sect i on
D,
r equi r es t he use
of t he f ol l owi ng t est equi pment :
(1 ) Logi c Uni t Test Set Type QB10/8
( 2 ) Di gi t al Vol t met er , r anges +30 V and
- 5
v dc . accur acy
1
i nput
r es i s t ance
1 MQ.
3 ) Logi c Anal yser
( 4 ) Fr equency Count er , r ange gr eat er t han
5 . 7
MHz.
B
Test Pr ocedu e
( 1 ) Connect t est set t o uni t under t est usi ng the cabl es pr ovi ded.
( 2 ) Set QB10/8 swi t ches:
NORMAL/ CONTI NUOUS t o NORMAL
LEVEL/ SENSE t o LEVEL
VALID/INVALID t o VALI D
FREQUENCY t o 30 MHz
ON/OFF
t o
ON
3 )
Ref er t o t he r el evant Code Conver si on Chart ,
Tables
1
oc
2.
Check
t hat i l l um nat i on of out put code l amps i s i n accor dance wi t h out put
code shown f o r 30 MHz.
( 4 ) Repeat oper at i on c ) at al l f r equenci es and out put codes shown on
char t .
5 ) Swi t ch o f f power and di sconnect uni t under t e s t .
Page
20
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CHELTQN (ELECTROSTATICS ) L I M I T E D
OVERHAUL
MANUAL
Publication No 7-AS182-1
FREQUENCY MHz
30.0
30.2
30.4
30.8
31.0
32.0
Table 1 - C o d e Conversion Chart, 7-AS182-1
o r
12-126 Antenna.
RED LEDs ILLUMINATED
J
B
C
D E F
J A C D E F
A C
D E
F
A B D E F
J
A D
E
F
J B C E F
36.4
I 34.0
I
J
B
C D
i: 1
D
F
76.0
80.0
84.0
100.0
1
A
J
A B
K
120.0 J
140.0
180.0
200.0
215.0
J A B
B
J
F
F
227.0 A K
2 4 9 . 0 K
302.0
324.0
3 4 5 . 0
391.0
~~
J A
B
C K
J
D
K
J E
J
B
C D E
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CIIP.LTON ELECTROSTATICS) LIMITED
OVERHAUL
MANUAL
P u b l i c a t i o n No 7-AS182-1
30.8
31.0
32 .0
34.0
Table 2
B C
E
F
' J C
E F
E F
J A
B
C F
_.
-
Code Conversion Chart. 7 -AS 182 -1 o r 12-190-11 Antenna,
110.0
120.0
Note: Ensure link connections in external connector to J1
J to
T;
K to
U ;
L to
M.
A
B K
B K
a r e :
3 2 4 . 0
3 4 5 . 0
386.0
1 8 1 . 0
I
REQUENCY
MHz
C F I<
C D
F
K
F
-
C
D
J
RED LEDs ILLUMINATED
1 8 2 . 0 A
183 .0 B
185.0
1 8 6 . 0
1 8 7 . 0
188.0
1 8 9 . 0
D
E
F
K
J
A B C D E F K 1
4 0 . 0 I J A B C
E
8 0 . 0 J
B
1 9 0 . 0
1 9 1 . 0
A
B
C D
E
F
K
J
B C
D E
F K
1 4 0 . 0
1 A K
180. 0 K
1 9 5 . 0
2 8 2 . 0 E F
K
J
A
B C D F
K
1 9 7 . 0
198 .0
J A
B C D
E
F
J A
B C D E F K
I
192.0
I J A C D E F K
1 9 4 . 0 I J
A
E C E F K 1
Note: When the r e d LED is
extinguished the equivalent
gr e e n
LED must
be
illuminated. Non-illumination of b o t h
c o l o u r s
constitutes
a
f a i l u r e .
as
does illumination
o f
both colours.
Page 22
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CHELTON ( ELECTROSTATI CS) LI M TED
OV?IRHAUL MANUAL
P u b l i c a t i o n No 7 - A S 1 8 2 - 1
C I nt er nal Power S u p p l p Faul t s
I f an i nt ernal power suppl y f aul t i s suspect ed car r y out operat i ons
1)
t o (8) bel ow. For t es t poi nt l ocat i ons see I PL F i g. 5.
(1) Obt ai n access t o component s as detai l ed i n Sect i on
2,
A . 1).
2 )
Usi ng t he
D V M
swi t ched t o 2 M Qr ange. measur e t he r esi st ance bet ween
Uni t Under Test UUT) pi ns Pi ns B and E. The r esi st ance measured
s h o u l d be gr eat er t han
1 MQ.
3 )
Connect t he l o a d s as bel ow,
6 Qbet ween - 5V, Pi n
F
and OV, Pi n
E.
7 0 Q bet ween +5V. Pi n C and OV, Pi n
E.
6, 800Qbet ween +28V. Pi n D and
OV
Pi n
E.
4 ) Connect t he bench power suppl y set t o pr ovi de 28 V dc t o UUT
Ensur e t hat +28V i s connect ed t o Pi n A and OV
t o
Pi n B
o f
t he UUT
Set t he cur r ent l i m t of t he power suppl y t o 1A.
Swi t ch on t he bench power suppl y.
( 5 )
Usi ng DVM set t o appr opr i at e r ange, measur e t he f ol l owi ng vol t age.
+ve t erm nal of C7 and Pi n E. 8 k 0 . 3 Vol t s
N.B.If t he vol t age i s out s i de t he l i m t . t hen adj us t VR1
on
t he UUT
t o gi ve 8 2 0 . 1 Vol t s
6) Usi ng
DVM
set t o appr opr i at e r ange, measur e t he f ol l owi ng vol t ages.
Pi n C
Pi n
F
Pi n D
5 2 0 . 2 5
Vol t s
- 4 . 5 20.3 Vol t s
+27 24 Vol t s
( 7 )
Adj ust i nput vol t age
t o
16
V.
Repeat Par a 6.
8)
Adj ust i nput vol t age t o 3 2
V.
Repeat Par a
6.
D Tr oubl e Shoot i ng,
Proceed as suggest ed i n Fi gs. 8 and
9.
mandat or y and oper at or s may f i nd i t advant ageous t o al t er t hi s sequence.
The sequence
o f
t es t s i s not
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CHELTON ELECTROSTATICS) LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n
No 7 - A S 1 8 2 - 1
START
CHECK
E.
C8
S
R16. CHANGEAS
GO
TO 0
CHECK WIRING,
ACROSS A T 0 B 7
GO
TO
E
1”“
CHECK 01, L1.08
8
C1. CORRECTAS
NECESSARY
CHECK 01, L1.08
8
C1. CORRECTAS
NECESSARY
GOTOF
CHECK ~6 a
cs.
CHANGE
AS
NECESSARY
GO TOD
CHECK
WIRING
TO
LOGIC BOARD
8
GO TO D
FCW.
F C I ~
F C I ~
IS
12
V
CORRECT
GO
TOG
CHECK
R9.0). R8. C3.
CORRECT AT
Cl
MENCHANGE
ICI.
GO TO H
CHECK
Re
CORRECTATTRl
GO O
J
”’
PINS 5 8 8
7
GO
TO K
CHANGE Tl
GO TO L
FIGURE
8:
P o w e r Supply Fault D i a g n o s i s
Page
2 4
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CHELTGN (ELECTROSTATICS) LI M I TED
OVERHAUL MANUAL
Pubiication
No
7 - A S 1 8 2 - 1
-
SET INPUT
FREQUENCY
TO
38.0
MHZ
START
CHECK SWITCHING
AND WIRING
GO TO A
GO TO
POWER SUPPLY
VAILABLE FAULT DIAGNOSIS
CHECK WlRl NG
FCI-B.
FCZI
AND
5 2
I GOTO C 1
NOTE WHICH LED8
ARE INCORRECT
f
To
Figure 9B
IC
PINS
1 . 7 , B
& 14
PINS
1 -
8
CORRECT 7
GO TO J
CHANGE ICSOR IC
6
AS NECESSARY
GO TO E
THEN CHANGE TR
GO
TO F
I I
GO TO F
FIGURE
9 A :
Logic
Board F a u l t
Diagnos is
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C E L T O N ( E L E C T R O S T A T I C S ) LIMITED
Publication
No 7-AS182-i
oVERIIAUL MANUAL
CHANQE C3
L W T O P
From
Figure 9A
FRECIUENCY
CORRECT?
THEN CHANGE XTAL
1
T””
CHECK WRINQ.
J1.
FC1D.
-11.
F E 1 2 6 FC13
GOTOJ
CHECK R l , R2.
THEN CHANGE IC1
IS
DATA
IC2 PIN 1 ?
CHECK
R3.
R4
R7.
RE.
R19
a
ca
THEN CHANGE IC1
p20.P21.
F22
P23
CORRECTATICZ PINS
T””
CHANQE 1C2
GOTON
SUPPLY
ARE C13.916,
R20,
21B T R l
SERVICEABLE
?
CHECK R9 17
THEN
CHANGE IC1
I GOT00
CHANQE
AS
A R E C l - 6 E C 1 1
SERVICABLE
?
I
1
P O W ? S P L Y
AULT DIAQNOSIS
FIGURE
9B: Logic
B o a r d
Faul t D i a g n o s i s
Page
2 6
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CHELTON (ELECTPLY
ST T I S
LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n
No 7-AS182-1
ILLUSTRATED PARTS LIST
LOGIC UNIT
TYPES 7 - A S 1 8 2
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CHELTON ELECTROSTATICS)
LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n
No 7-ASlR2
FIGURE 1:
L o g i c
U n i t Type
7-AS182
Exploded
V i e w
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CHELTON (ELECTROSTATICS) LIMITED
OVXRHAIYL MANUAL
Publication No 7 - A S 1 8 2 - 1
12 DETAI LED PARTS LI ST
TABLE
1
LOGI C UNI T 7- AS182- 1
r
CTEM
L 1
5
10
1 5
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
1 1 0
115
120
1 2 5
130
135
PART
NUMBER
7 - A S 1 8 2 - 1
19126
20840
19125
8018-109
BS4168
12996
19081
A262- 3008
SP126A
19139
19121
A262- 3008
SP126A
A262- 3012
8012 12
20793
19082
A262- 3008
SP126A
RC201002
A262- 2005
8019 - 65
8015- 203- 01
8015- 203- 03
8021- 40- 7AS182- 1 S
8021- 40- 7AS186- 1
NOMENCLATURE
1234567
L O G I C
UNIT
. MOUNTI NG BASE
. SEPARATOR PCB ASSY
. BOX
. O RI NG CONDUCTI VE
. SCREWSKT CAP HD M5 x 35mm
. WASHER PLAI N ST ST M5
. CONNECTOR ASSY J 1
. GASKET
. SCREWPAN HD M3 x 8mm
. WASHER PLAI N 4- 40UNC
. CONNECTOR ASSY 52
.GASKET
. SCREWPAN HD M3
x
12mm
. WASHER PLAI N 4- 40UNC
. SCREWPAN HD M3 x 12mm
. SOLDER TAG M3
. NUT M3
. CONNECTOR ASSY 53
.GASKET
. SCREWPAN HD M3
x
12mm
. WASHER PLAI N
4 - 4 0
UNC
. SOLDER TAG M2
. SCREWPAN HD M2
x
5mm
. FI LTERCON FC22 FC23
. W RE 7/ 0. 2mm PTFE BLACK
. W RE 7/ 0. 2mm PTFE RED
. LABEL I DENT
EFF
CODE
A
J NI TS
I ASSY
RF
1
1
1
2
4
4
1
4
4
4
1
1
3
4
1
1
1
1
1
4
4
2
2
2
A R
AR
1
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CHELTON ELECTROSTATICS)
LIMITED
OVERHAUL MANUAL
Publication No 7-AS282-1
12 DETAILED PARTS LIST
TABLE 2
SEPARATOR PLATE AND PCB ASSEMBLY, PART No 20840
F I G
ITEM
2- 1
5
10
15
20
2 5
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
PART
NUMBER
20840
12994
20838
A260 3014
S P I 3 9 A
13081- 070
19133
A 2 6 0
3014
S P I 3 9 A
13081- 060
8015- 203- 25
8015 - 203- 24
8015 - 203- 29
8015- 203- 23
8015- 203- 11
8015- 203- 10
8015- 203- 09
8015- 203- 08
8015- 203- 07
8015- 203- 06
8015- 203- 04
8015- 203- 01
8015- 203- 03
NOMENCLATURE
12345
67
SEPARATOR AND PSB ASSY
.SEPARATOR PLATE ASSY
.BOARD ASSY
.SCREW PAN
HD M3
x
14mm
.WASHER
CRI NKLE
M3
.SPACER
.POWER SUPPLY BOARD ASSY
.SCREW PAN HD M3 x 14mm
.WASHER CRINKLE
M3
.
SPACER
.WIRE
7/ 0. 2mm
PTFE GREY/YELLOW
.WIRE 7/ 0. 2mm PTFE BLUE/YELLOW
.WIRE
7/ 0. 2mm
PTFE BLACI?/GREY
.WIRE 7/ 0. 2mm PTFE BLACK/WHITE
.WIRE
7/ 0. 2mm
PTFE
WHITE
.WIRE 7/ 0. 2mm PTFE GREY
.WIRE 7/ 0. 2mm PTFE VIOLET
.WIRE 7/ 0. 2mm PTFE BLUE
.WIRE 7/ 0. 2mm PTFE GREEN
,WIRE 7/ 0. 2mm PTFE YELLOW
.WIRE 7/ 0. 2mm PTFE PINK
.WIRE 7/ 0. 2mm PTFE BLACK
.WIRE
7/ 0. 2mm
PTFE RED
E F F
CODE
A
JNI TS
/ASSY
RF
1
1
6
6
6
1
4
4
4
AR
A R
A R
AK
AR
AR
A R
AR
AR
AR
AR
A R
AR
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CHELTON (ELECTROSTATICS) LIMITED
OVERHAUL MAWAL
Publication
No 7-AS182
10
FC17
F C l 8
FC19 FC20
I / /
FC10 F C i l FC l 2 F C i 3
15
1’0
FIGURE 3 : Separator Plate Assenibly
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CHELTON ELECTROSTATICS LIMITED
OVERHAUL MANUAL
P u b l i c a t i o n No 7-AS182-1
FIG PART
NOMENCLATURE
ITEM NUMBER
12345
7
3 - 1 12994
SEPARATOR PLATE ASSY
5 12993
.SEPARATOR PLATE
10 8019-63
.FILTERCON FC1-FC9. FC14-FC21,
15
8019-64
.FILTERCON FC10-FC13
20
8021-229
.SOLDER TAG M3
2 5 A262
3006
.SCREW
P A N
HD M3 x 6mm
30
-
.WASHER. CRINKLE, M3
35 -
.NUT
M3
12 DETAILED PARTS LIST
EFF UNITS
C O D E /ASSY
A RF
1
17
4
2
1
1
1
TABLE 3
SPARATOR PLATE ASSEMBLY. PART
No
12994
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CXELTON ELECTROSTATICS)
LIMITED
OVERHAUL
MANUAL
P u b l i c a t i o n
No
7-AS182-1
35
/
0
1c2
20
35
8 ositions)
25
FIGURE
4 : Logic B o a r d A s s e m b l y
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CHELTON
ELECTROSTATICS
LIMITED
OVERHAUL
MANUAL
P u b l i c a t i o n No
7 - A S . 1 8 2 - 1
12 DETAI LED PARTS LI ST
-
?I G
I TEM
c 1
5
1 0
15
20
25
30
35
PART
NUMBER
20838
20300M
8021- 283
8021- 247
8021- 5
8021
6
8021- 268
8021- 134
RF11 - BA
156
RFl l - BA- 168
RF l l - BA- 172
RF l l - BA- 178
RF l l - BA- 184
RF l l - BA- 186
RF11 - BA 188
RF l l - BA- 194
RF l l - BA- 196
RF l l - BA- 204
RF l l - BA- 206
RF l l - BA- 216
CF11- BR- 118
CF l l - BR- 124
CF l l - BR- 148
CF11- BR- 160
CF l l - BR- 236
CF11-BR-191
8010- 66
8011- 35
8011- 33
8012- 100- 007
8012- 161
8012- 100- 004
20794
8012-100-006
TABLE 4
LOGI C BOARD ASSEMBLY, PART No. 20838
NOMENCLATURE
LOGI C BOARD ASSY
. CONTROL PCB M/ CD
. I C SOCKET 28- WAY
. TERM NAL ASSY, SMALL
. TRANSI STOR MOUNTI NG PAD TO5
. TRANSI STOR MOUNTI NG PAD TO18
. TRANSI STOR MOUNTI NG PAD TO18
. LACI NG CORD
. RESI STOR,
. RESI STOR,
. RESI STOR.
.
RES
I
STOR,
. RESI STOR.
. RESI STOR.
. RESI STOR,
. RESI STOR,
. RESI STOR.
0. 25 W 220R
0. 25 W, 680R
0. 25 W, 1K
0. 25
W
1K8
0. 25 W 3K3
0. 25 W, 3K9
0. 25 W . 4K7
0 .2 5
W
8K2
0 . 2 5
W
10K
. RESI STOR,
0. 25 W, 22K
. RESI STOR.
0. 25 W 27K
. RESI STOR, 0. 25 W, 68K
. CAPACI TOR, CERAMI C, 33p
. CAPACI TOR, CERAMI C,
l o o p
. CAPACI TOR, CERAMI C, 10n
. CAPACI TOR, CERAM C.
lOOn
. CAPACI TOR. ELECTROLI TI C. l p0. 35V
. CAPACI TOR, ELECTROLI TI C, l Q~.
5V
. DI ODE, LM113H
. TRANSI STOR, 2N2906
. TRANSI STOR, 2N3019
. I NTEGRATED CI RCUI T. LM139J
. I NTEGRATED CI RCUI T. MD80C31
. I NTEGRATED CI RCUI T, 54HCT373
. PROGRAMMED EPROM
. I NTEGRATED CI RCUI T, LM124J
. CRYSTAL,
6MHz.
CR64/ U
CI RCUI T
REFERENCE
320
35 - R8
X16
33 2
314
311, R25- R31
317- Rl 9. R22
32 1
29
. R12,
1 5 .
R2:
324. R34- R41
2 1
- R4
113
x10
z 9 , c10
2 7 , C8
: l - C6, C14, C15
:16
211,
c12
213
11
r i
r 2
- ~ 9
[Cl
[C
2
rc3
TC4
r C5. I C6
3TAL1
' NI TS
AS SY
RF
1
1
23
1
1
AR
1
4
1
1
1
8
4
1
13
4
1
2
2
8
1
2
1
1
1
8
1
1
1
1
2
1
a
1
-
8/17/2019 Logic Unit
42/43
-
8/17/2019 Logic Unit
43/43
CHZLTON (ELECTROSTAT
I C S I L I H I T S D
OVELYAUL MANUAL
Z u b l i c a t i o n
No
7 - A S 1 8 2 - 1
1 2 DETAILED
5ABTS LI ST
T A B L E
5
PO H ER S U P P L Y B OA RD A S S E Y ? L Y .
?AKT
No. 1 3 1 3 3
5
1
5
10
1 5
2 0
2 5
~
?AXT
N U M B E X
13133
1 9 1 3 4 M
f 5
8Gi 1- 29
5 0 3 2 - 1 1 6
5 0 1 2 - 1 1 5
8 0 2 1 - 5
8021
1 3 4
8012- 2 9
_
8 0 1 0 - 5 9
8010 5 7
8010 5 3
8 0 1 0 - 5
3
8013- 55
a 0 0 2 - 8
31711
- 3 X - 1 5
5
?.?l i - BA-
164
R711- BA- 176
X z L l - z A - 1 9 0
33' 11- BA- 194
?2 1 3.4 - i 9
W I l - BA i
96
~ z 1 ~ - 3 ~ - 1 7 2
R F ~ B A 2 6 2
C Z 1 1 B R 0 3
5
CPLl - BR- 16G
8 0 0 3 - 3 2 3 -
C F 2 4 - 1 4 - 0 6 0
CF24-13-000
C F 2 4 - I R - O L 2
C F 2 4 - 1 2 . - 0 0 4
8004- 155
c m - z 3 - 1 7 2
5001- 53
8 0 0 6 - 5 3
8021- 247
8 0 2
1 2 4 5
N O M E N C L A T U R Z
1 2 3 4 56 7
POGjER S U P D L Y BOARD ASSY
. P U N T E D
C I R C U I T B O A R D
.T ULNSFORMER
.
TRWS I STO3
. L Y T E G U T E D C I S C U I T
. N T EG R A TE D C I R C U I T
.
M O U N T I N G
P A D
.
L A C I N G CORD
. I N T Z G W T E D C I R C U I T
.
D I O D E
.
D I O D E
.
ODE
.D i Q D E
.D I O D E
. ? . Z . S i S T O R O R 3 3
. R E S I S T O R 2 2 0 R
.
RSSISTOR 470f2
.RZSISTOR- 1KQ
.
R Z S I S T O R
1 K 5
.?.Z:SISTGR l K 5
.
aEsrsTQa
8 K 2
.XESISTOR
i 3 K
. R E S I S T 6 R 12X
.
XESI STOR
i 8 K
.C A P A C I T 3 R
0.
G01p
. S A P A C I T 3 R
0. 1~5
. C X P A C IT C )R 2 n 2
.
C A P A C I T Q R 1 .
OJLF
.C A ? A C I T O R 2p.Z
. C A P A C I T O R 47pF
.C ? I ? A C I T O R i 0 0 p F
. C A P A C I T O R
470pF
. C A ? A C I T O R
2200p.F
. R E S I S T O R V A R I A B L E lOOn
. IN D U C T O R 2 2 0 p H
.
TEXMINAL
ASS :
. T E R M I N A L ASSY
TL
TEI1
LC2
I C 3
I C 1
0 4 .
D 7
D 6
31
D8
i
D 5
x11
R 8
,
P.1
3
R 1 4
R 1 0
R1
R1
R4
R 6 , i l l 5
R2
E29
c5
C3. Cl l . CL2. C6'
c4
c 2
C 8
c10
C 7
c9
C1
V R 1 -
L1