Logic Unit

8/17/2019 Logic Unit

1/43

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


2/43

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

23-17m25 J u n 5 / 9 1


3/43

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


4/43

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

Page

1

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Li s t of Ef f ect i ve Pages

Page

1

23-17- 5

J un 5 / 9 1


5/43

Service

B u l l e t i n

Number


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


6/43

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


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


7/43

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

Page 1

23m17m25 J un

5/ 91


8/43

CKELTON ELECTROSTATICS) LIMITEO

OVERHAUL MANUAL


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

Page 2

23117-25 J m 5 / 9 1


9/43


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


10/43


OVERHAUL MANUAL


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

23-1

7-25 Jun 5 / 9 1


11/43

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


12/43

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

23-17-25 J un 5/ 91


13/43

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


14/43

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


15/43

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


16/43

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


J


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


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


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


E

dr i ve


F

dr i ve

OUTPUT Ear t h Ret ur n

SCREEN

OUTPUT ant enna s egment

J

dr i ve


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

J un

5/ 91


17/43

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

23 17125

J u n

5 / 9 1


18/43


O V ERH A U L MANUAL


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

23-1 7-25 J un 5/ 91


19/43

CEELTON ELECTROSTATICS) IMITED

OVERHAUL

MANUAL


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 ) .


20/43

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

23-17-25 J u n 5 / 9 1


21/43

CHELTON

ELECTROSTATICS) LIMITED

OVEMAUL

MANUAL


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 )


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.


22/43


OVERHAUL

MANUAL


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

23617125 Jun 5/91


23/43


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 )


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

23-17-25 J un 5/ 91


24/43

CHELTON ELECTROSTATICS)

LIMITED

OVERHAUL MANUAL


7 - A S 1 8 2 - 1

( 4 )


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

2311 7125

Jun

5/91


25/43


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 .


26/43


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

2311

7-25 J u i i 5 / 9 1


27/43

CHELTQN (ELECTROSTATICS ) L I M I T E D

OVERHAUL

MANUAL


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


28/43

CIIP.LTON ELECTROSTATICS) LIMITED

OVERHAUL

MANUAL


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

23-1

125

Jun

5 / 91


29/43

CHELTON ( ELECTROSTATI CS) LI M TED

OV?IRHAUL MANUAL


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


30/43


OVERHAUL MANUAL


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

23117125 Jun

5 / 9 1


31/43

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


32/43

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

23117125

J u n

5 / 9 1


33/43

CHELTON (ELECTPLY

ST T I S

LIMITED

OVERHAUL MANUAL


No 7-AS182-1

ILLUSTRATED PARTS LIST

LOGIC UNIT

TYPES 7 - A S 1 8 2


34/43


LIMITED

OVERHAUL MANUAL


No 7-ASlR2

FIGURE 1:

L o g i c

U n i t Type

7-AS182

Exploded

V i e w


35/43

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


36/43


37/43


LIMITED

OVERHAUL MANUAL


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


38/43

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


39/43

CHELTON ELECTROSTATICS LIMITED

OVERHAUL MANUAL


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


40/43

CXELTON ELECTROSTATICS)

LIMITED

OVERHAUL

MANUAL


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


41/43

CHELTON

ELECTROSTATICS

LIMITED

OVERHAUL

MANUAL


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



. 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


42/43


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

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