Watchman Fd-30a User manual

SERVICE

MANUAL

US

Model

Canadian

Model

FM

STEREO/AM

De

watchman

SPECIFICATIONS

TV

standard

American

TV

standards

TV

channel

coverage

VHF

channel

2-13

UHF

channels

14-83

Radio

frequency

range

FM

88-108

MHz

AM

530~1,605

kHz

VHF/UHF/FM:

telescopic

antenna

FM:

headphone

cord

antenna

AM:

built-in

ferrite

bar

antenna

Picture

tube

5-cm

(2-inch)

picture

measured

diagonally

Speaker

Approx.

3.6.

cm

(1.4

inches)

dia.

Input

Video

input

jack

(minijack)

1

V

(p-p),

750hms

unbalanced,

sync

negative

Headphones

jack

(stereo

minijack)

load

impedance

8-300

ohms

Antenna

Output

Battery

life

Watching

TV

or

listening

to

the

radio

at

a

normal

sound

level

and

normal

temperatures,

you

can

expect

the

following

batteries

to

last

for:

Battery

TV

Sony

Eveready

AMS

alkaline

batteries

approx.

or

Eveready

No.

E91

alkaline

batteries

3

28

(hours)

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

SHADING

AND

MARK

A

ON

THE

SCHEMATIC

DIAGRAMS

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

TO

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL

OR

IN

SUPPLEMENTS

PUBLISHED

BY

SONY.

MICROFILM

Power

requirements

6V

dc:

Batteries

four

size

AA

alkaline

batteries

(IEC

designation

LR6)

BP-23

rechargeable

battery

pack

(optional)

DC

IN

6V

jack

accepts:

AC-129WA

ac

power

adaptor

(optional)

for

use

on

120V

ac,

60

Hz

DCC-127A

car

battery

cord

(optional)

for

use

on

12V

car

battery

Battery

case

(optional)

EBP-6

for

use

on

four

size

C

alkaline

batteries (IEC

designation

LR14)

Approx.

85x

171

39.8

mm

(w/h/d)

(33/,

x

63/,x

15/,

inches)

incl.

projecting

parts

and

controls

Approx.

83

x

166

x35

mm

(wi/h/d)

(33/4

x

65/4

%

17/4,

inches)

not

incl.

projecting

parts

and

controls

Dimensions

ATTENTION

AU

COMPOSANT

AYANT

RAPPORT

A

LA

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

TRAME

ET

UNE

MARQUE

/\

SUR

LES

DIAGRAMMES

SCHE-

MATIQUES

ET

LA

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

LA

SECURITE

DE

FONCTIONNEMENT.

NE

REM-

PLACER

CES

COMPOSANTS

QUE

PAR

DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

CE

MANUEL

OU

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

FLAT

B/W

TV-FM

STEREO

/AM

RECEIVER

SON

Y.

B:W

FD-30A

|

FEATURES

The

FD-30A

is

a

handy

2-inch

flat

TV

which

employs

Sony’s

newly-

developed

monochrome

FD

(flat

display)

tube.

The

recessed

phosphor

screen

provides

clear

viewing

even

in

a

bright

place.

i——7_

I

/

phosphor

screen

cos

|

:

7

electron

beam

deflection

yoke

r—

electron

gun

-

@

Built-in

FM

stereo/AM

radio.

@

FM

stereo

listening

through

headphones.

@

A

VIDEO

IN

jack

for

monitoring

the

picture

being

recorded

witha

video

camera.

@

Built-in

stand

for

tabletop

viewing.

®@

Five

different

power

sources:

batteries,

house

current,

recharge-

able

battery,

battery

case

and

12V

car

battery.

TELESCOPIC

ANTENNA

antenna

cantact

plate

(A)

A

BOARD

Ke

FM

M

=

iorm

7

0x

|

FD-30A

K

AND

Z

BOARD

@p2x6

QCAT

support

K

board

FD-30A

|

SPEAKER

AND

SPEAKER

BRACKET

speaker

1)

Pull

out

the

speaker.

=

oo

@

speaker

bracket

a

DB

2

MPX

BOARD

MPX

board

NOTE

ON

ASSEMBLING

When

reinstalling

the

control

drum,

position

the

parts

marked

*Aand

>B

of

two

drums

as

illustrated.

control

drum

dial

drum

@

p2x4

D

BOAI

G

BOAI

NOTE

Whe

plate,

rc

|

D

BOARD

AND

PICTURE

TUBE

5]

Release

the

claw.

G

BOARD

NOTE

ON

ASSEMBLING

When

reinstalling

the

control

indication

plate,

position

as

illustrated.

Turn

the

control

knob

MAX

position.

FD-30A

4

}

CRT

support

@

Pull

out

the

D

board.

©

Pull

out

the

picture

tube

socket.

control

knob

control

indication

plate

Oru

out

the

control

indication

plate.

1-2.

DIAL

CORD

STRINGING

1)

Dial

Cord

Preparation

2)

Dial

Cord

Stringing

dial

drum

3)

Pointer

Setting

After

the

stringing;

turn

the

tuning

knob

fully

clockwise.

dial

pointer

tuning

knob

After

setting

dial

pointer,

apply

a

locking

compound.

Set

the

center

of

the

dial

pointer

at

this

left

side

of

rib.

20

15

10

O

(cm)

O

(inch)

FD-

=

2.

MOUNTING

DIAGRAM

-—

Conductor

Side

—

|

D-30A

FD-30A

|

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16

17

3,3

———__________—_-

<

8,13

>

————{_

8,

1)

—

13

-——_______

—<

18-19

>

—<16

—

19>

———<

16

—

19)-

u

FAWN

14,15

2

34Vp-p

Vf

Q

[A

BOARD]

|

[MPX

BOARD]

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5]

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2]

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bade

1B.

19

v3)

ee

DRY

BATT

Ye

t

a

:

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SIZE

"AA"

RECHARGEABLE

:

(IEC

DESIGNATION

R6)

BATT

~

PACK

:

si

Si

[585]

[Za]

[C_

BOARD}

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2

6

26y

©

2.90"

3v

|

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R50

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1

2

8

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(Bae

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25

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RVIBL

is

nm

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ORG.

21-0”

;

cave

jmax-20V

‘ees,

kgs

RY

fmin-O.5V

©

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6.2V.

=

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21.5V..

[LED

BOARD]

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UHF

-

5,8V

”

RVI54

VHF

HIGH

4,2V

{mox

3.4V

Note:

HIGH

-

ON

fmin

4.2V

e

Color

code

of

sleeving

over

the

end

of

the

jacket.

@

O—

:

partsextracted

from

the

component

side.

@

@—

:

partsextracted

from

the

conductor

side.

e

fF

:

indicates

side

identified

with

part

number.

component

side

pattern

©

@-L@+—Through

hole

eo.

:

B+

pattern

|

FD-30A_

_FD-30A

|

5

16

17

18

19

_

20

21

22

23

24 25

26

27

28

29

30

31

8,

11-3

=z

<

7—13>-

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79

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2,8

9

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14,15

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2

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$60!

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|

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]

RV451

OFF

=

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TV

as

{G

BOARD]

re

fas

FM/TV

:

TEL

ANT

af

805

50}

804

,

803

;

803

415

8

251

808

E(

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33

PQ60!.

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802

A

OM-O

|

801,

252

807,502

801

802

,

502

1152

954

8

856

253

C251

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Ici

403

851

852 853

855

34

2

33

|

ood

|

34

:

i

3

4

i

[BAR

ANT

BOARD)

:

151,152,153

201

THROUGH

COMPONENT

HOLE

SIDE

PATTERN

‘8

[K

BOARD]

UHF

==

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SELECT

<33

—

36>

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'C45hu

1

——”

ces

ae

(Z

BOARD}

1C452

(CONDU

5.8V

2.8V

{2.7V)

(1IV)

Z

ANT2

AM

FERRITTE-ROD

ANT

ean

tn

|

FD-30A

_FD-30A

|

SCHEMATIC

DIAGRAM

1

2

3

4

5 6

7

8 9

10

11

;

12

13

14

15

16

17

a

A

a

Ne

TE

me

ney

oe

Note:

[

A

BOARD

}

sage

aie

pisier

mana

arte

age

Q254

<28C536SP

©

Components

for

right

channel

have

same

v

ee

O152

Q153

QI5!

css

cig

channel.

ROerencs

numbers

are

coded

fron

Ear

6

BOARD

Oy

2SAlI626

2SA1162G

2sc27

|2

a0eT

Bas

©

All

capacitors

are

in

uF

unless

otherwise

r

TEL

ANT

{

0152

e

ol

daa

9251

SOWV

or

less

are

not

indicated

except

f

He

ies

Te

ods

b

2sc536sP

and

tantalums.

001

ise

|

6.001

ViF ViF

ViF

Lae

|

e

All

resistors

are

in

ohms,

'/1o

W

unless

o1

le é,

AMP-1

Pla

AMP-3

9252

kQ:

1000

2,MQ:

1000

kQ.

:

.

c2i3

nctras

e

4:

internal

component.

jmox

34V

jmin

OV

Fa

sii

ef

ig

e

=

signal

path

{min

4.2V

Jmox

4,2V\VHF-

HIGH:ON)

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©)

parece

e

(. _]

:

adjustment

for

repair.

p02

152

0153

Ri54

:

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&

ay

ere

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Readings

are

taken

under

no-signal

(detu'

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‘i

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14

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16

17

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Note:

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Components

for

right

channel

have

same

values

as

for

left

channel,

Reference

numbers

are

coded

from

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All

capacitors

are

in

uF

unless

otherwise

noted.

pF

:

uuF

9251

5OWV

or

less

are

not

indicated

except

for

electrolytics

—_

2SC536SP

and

tantalums.

ark

See

|

e

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resistors

are

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ohms,

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W

unless

otherwise

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kQ:

1000

2,M2:

1000

kQ.

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a

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path

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20

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components

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by

shading

and

mark

A

are

critical

for

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only

with

part

number

specified.

Note:

Les

composants

identifies

par

un

tramé

et

une

marque

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critiques

pour

la

sécurité.

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les

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piece

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specifie.

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are

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a

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1

FD-30A

©

Semiconductor

Lead

Layouts

2SA1162

DTC114EK

rae

2SA1175

2SC2785-E

letter

side

2SB624

2SC1622A

28C

1623

2SD596

2SB772

Te

a--

oO

2S8C2458

2SC

2839-E

2SD763

i

2SD999

2SD1005

2SK54-B

2SK193

letter

side

AN5700

M51378L

TA7343AF

M51364P

NJM386M

TA7640AF

(Top

view)

uPC574J-G

cathode

SLP178B

anode

cathode

181555

1S2687S-1

18S119

ERA81-005

RD3.3EB1

RD6.2EB1

RD7.5EN2

cathode

FD-30A

9-963-1

_

FD-30A

9-963-177-82

Sony

Corporation

English

84D0507-2

Printed

in

Japan

©

1984

SERVICE

MANUAL

US

Model

Canadian

Model

No.

2

January,

1984

|

SUPPLEMENT

File

this

supplement

with

the

Service

Manual.

A

part

of

disassembly

procedures

has

been

added.

Adjustment

designations

have

been

specified

in

the

schematic

diagram.

FLAT

B/W

TV-FM

STEREO

/AM

RECEIVER

ON

Y.

,

B.W

FD-30A

1.

DISASSEMBLY

1-1.

REMOVAL

Note:

Remove

the

parts

in

the

numerica!

order.

@

battery

case

lid

@

cabinet

screw

2

x

22

Q

rear

cabinet

@

cabinet

screw

2

x

30

(4PCS.)

control

knob

@

front

cabinet

hand

strap

FD-30A

SAFETY

CHECK-OUT

After

correcting

the

original

service

problem,

perform

the

following

safety

checks

before

releasing

the

set

to

the

customer:

1.

Check

the

area

of

your

repair

for

unsoldered

or

poorly-soldered

connections.

Check

the

entire

board

surface

for

solder

splashes

and

bridges.

2.

Check

the

interboard

wiring

to

ensure

that

no

wires

are

‘“‘pinched”

or

contact

high-wattage

resistors.

3.

Check

that

all

control

knobs,

shields,

covers,

ground

straps,

and

mounting

hardware

have

been

replaced.

Be

absolutely

certain

that

you

have

replaced

all

the

insulators.

4.

Look

for

unauthorized

replacement

parts,

par-

ticularly

transistors,

that

were

installed

during

a

Point

them

out

to

the

customer

and

recommend

their

replacement.

5.

Look

for

parts

which,

though

functioning,

show

obvious

signs

of

deterioration.

Point

them

out

to

the

customer

and

recommend

their

replace-

ment.

6.

Check

the

line

cord

for

cracks

and

abrasion.

Recommend

the

replacement

of

any

such

line

cord

to

the

customer.

7.

Check

the

condition

of

the

monopole

antenna

Cif

any).

Make

sure

the

end

is

not

broken

off,

and

has

the

plastic

cap

on

it.

Point

out

the

danger

of

impalement

on

a

broken

antenna

to

the

customer,

and

recommend

the

antenna’s

replacement.

8.

Check

the

B+

and

HV

to

see

they

are

at

the

values

specified.

Make

sure

your

instruments

are

accurate;

be

suspicious

of

your

HV

meter

if

sets

always

have

low

HV.

9.

Check

the

antenna

terminals,

metal

trim,

“metallized”?

knobs,

screws,

and

all

other

exposed

metal

parts

for

AC

leakage.

Check

leakage

as

described

below.

To

Exposed

Metal

Parts

on

Set

AC

0.15

uF

voltmeter

[

|

@.75V)

=

Earth

Ground

Fig.

A.

Using

an

AC

voltmeter

to

check

AC

leakage.

LEAKAGE

TEST

The

AC

leakage

from

any

exposed

meta!

part

to

earth

ground

and

from

all

exposed

metal

parts

to

any

exposed

metal

part

having

a

return

to

chassis,

must

not

exceed

0.5mA

(500

microampers).

Leakage

current

can

be

measured

by

any

one

of

three

methods.

1.

A

commercial

leakage

tester,

such

as

the

Simpson

229

or

RCA

WT-540A.

Follow

the

manufacturers’

instructions

to

use

these

instru-

ments.

2.

A

battery-operated

AC

millidmmeter.

The

Data

Precision

245

digital

multimeter

is

suitable

for

this

job.

3.

Measuring

the

voltage

drop

across

a

resistor

by

means

of

a

VOM

or

battery-operated

AC

volt-

meter.

The

“limit”

indication

is

0.75V,

so

analog

meters

must

have

an

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

of

a

passive

VOM

that

is

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

a

2V

AC

range

are

suitable.

(See

Fig.

A)

HOW

TO

FIND

A

GOOD

EARTH

GROUND

A

cold-water

pipe

is

guaranteed

earth

ground;

the

cover-plate

retaining

screw

on

most

AC

outlet

boxes

is

also

at

earth

ground.

If

the

retaining

screw

is

to

be

used

as

your

earth-ground,

verify

that

it

is

at

ground

by

measuring

the

resistance

between

it

and

a

cold-

water

pipe

with

an

ohmmeter.

The

reading

should

be

zero

ohms.

If

a

cold-water

pipe

is

not

accessible,

connect

a

60—100

watts

trouble

light

(not

a

neon

lamp)

between

the

hot

side

of

the

receptacle

and

the

retaining

screw.

Try

both

slots,

if

necessary,

to

locate

the

hot

side

of

the

line,

the

lamp

should

light

at

normal

brilliance

if

the

screw

is

at

ground

potential.

(See

Fig.

B)

Trouble

Light

*.

Ohmmeter

-

AC

Outlet

Box

Cold-water

Pipe

Fig.

B.

Checking

for

earth

ground.

FD-30A

Chip

components

Chip

components

include

resistors,

capacitors,

transistors,

diodes,

coil

and

adjustable

resistors.

In

this

section,

the

types

of

resistors,

ceramic

capacitors,

transistors

and

diodes

which

are

used

most

frequently

will

be

described.

Dimension

of

transistors

and

capacitors

Ww

eZ

)

(Unit:

mm)

L

a

Identification

resistor

layer

side

(black color)

electrodes

narrow

:

A

same

color

electrode

ceramic

base

side

(white

color)

Resistor

Laminated

Ceramic

Capacitor

2.

¥,

mNRY/?

2

i>

tek

1

t

4

A3

Base

oA

eal

aan

can

A7

Emitter

AL

2

3

1

9

3

1

2

|

1

Diode

Transistor

Replacing

chip

components

All

chip

components

should

be

connected

and

disconnect-

ed,

using

a

tapered

soldering

iron

[temperature

of

the

iron

tip:

less

than

280°C

(536°F)]

,

a

pair

of

tweezers

and

braid-

ed

wire.

Precautions

for

replacement

1.

Do

not

disconnect

the

chip

component

forcefully.

Otherwise,

the

pattern

may

peel

off.

2.

Never

re-use

a

disconnected

chip

component.

Dispose

of

all

old

chip

components.

3.

To

protect

the

chip

component,

heating

time

for

attach-

ing

the

component

should

be

within

3

seconds.

©

Removing

chip

components

(1)

Removing

solder

at

electrode

Remove

the

solder

at

the

electrode,

using

a

thin

braided

wire.

Do

not

remove

the

solder

of

the

part

(chip

component)

attached

adjacent

to

the

electrode.

Pattern

Soldering

iron

Braided

wire

(2)

Disconnecting

chip

components

Turn

the

tweezers

with

the

soldering

iron

alternatelt’

applied

to

both

electrodes,

and

the

chip

component

will

be

disconnected.

Take

careful

precautions

while

disconnecting,

because

if

the

chip

component

is

force-

fully

removed

the

land

may

peel

off.

Never

re-use

a

disconnected

chip

component.

Tweezers

Turn

FD-30A

(3)

Smoothing

the

soldered

surface

After

disconnecting

the

chip

component,

remove

the

solder

by

using

a

braided

wire

to

smooth

the

land

surface.

©

Connecting

chip

components

The

value

of

chip

components

is

not

displayed

on

the

main

body.

Take

due

precautions

to

avoid

mixing

new

chip

components

with

other

ones.

(1)

Applying

solder

to

land

on

one

side

Apply

a

thin

layer

of

solder

to

the

land

on

one

side

where

the

chip

component

is

to

be

connected.

Too

much

solder

may

cause

bridging.

Small

quantity

of

solder

(2)

Speedy

soldering

Hold

the

chip

component

at

the

desired

position,

using

tweezers,

and

apply

the

soldering

iron

in

the

arrow-marked

direction.

To

protect

the

chip

compo-

nent,

heating

time

should

be

within

3

seconds.

Soldering

iron

on

Land

Printed

circuit

board

(3)

Speedy

soldering

of

electrode

on

the

other

side

Solder

the

electrode

on

the

other

side

in

the

same

way

as

in

(2)

above.

SECTION

1

OUTLINE

1-1.

PARTS

IDENTIFICATION

Telescopic

antenna

TUNNING

knob

FUNCTION

selector

BAND

SELECT

switches

VOLUME

control

VIDEO

IN

jack

PHONES

jack

FM

STEREO/AM

ea

_

watchman

DC

IN

6

V

jack

V

(vertical)

HOLD

CONTR

(contrast)

control

1-2.

CIRCUIT

BOARD

LOCATION

D

board

C

board

A

board

S

board

K

board

BAR-ANT

board

LED

board

MPX

board

FD-30A

O+—-{A}-

$6

T25I

Ol

LIPPLE

FILTER

Q254

TV +B

VIDEO

BUFFER

Q30}

SYNC

SEP

Q501

RADIO

+8

oe

ol

MPX

Oo

To

R-CH

1-3.

BLOCK

DIAGRAM

L203

ANTI

203

FM/TV

Tv

+8

eee

‘aulieestiietiietitntietientitetinnttedientieraiten

1,

20

diets

|

@)

(9——C1!,

20)

erst

|

TUNER

UNIT

RF

if

b

(3)

oo

vc

us

LB

HB

AGC

@)

L

=

_

ee

end

WIE

°

(1)

2)

@)

©)

MBcr3

al58

RF

AGC

SWITCHING

Q20i

IF

AGC

ais!

p20;

|

2202

UHF

=

+8

sisi

BAND

SELECT

VHF

TV

|

+8

UHF

SWITCHING

als

+8

C151

BAND

SWITCH

1152

rh

J301

9

f

8

VIDEO

IN

ee

$I

BAND

SELECT

FM

DX

FM

LOCAL

SI-|

$l-2

|

052

(DY

FM

+8

b

AM

(¥)

AM

+8

—

=]

|

RADIO

+8

a

CFI

cre

(0)

(8)

FM

RF

AMP

FM

MIX

FM

IF

AMP

x

ALE

HAKS

°

$

aie

ict

(1)

FM

IF/

DET,

i

MUTING

FM

OSC

14

AM

MIX

/

IF

/

DET

O8

ANT2

Q3

AM

OSC

FERRITE-ROD

ANT

\

'

(3)

ft

'

FM

+B

i

aN

RF

AM

®

a

W

uv

Bd

a6

a7

SWITCHING

D5

7

FM FM

OAM

+8 48 +8

V.OSC

ass

AFC

D50t

253

BUFFER

MUTING

251,

252

VIDEO

AMP

VIDEO

OUT

0302

,

303

0401

U.

BLANKING

V.

DRIVE

Vv.

OUT

o402

rvaol

bo]

45

foal

553,554

ONT

‘

QAv

vy

8

fa

2

+8

CONVERTER

+8

—4¢——

T8Ol

t

DRIVE

ouT

a80o3

0804

Q805

OUMPER

H.

OSC

H.

DRIVE

H.

OUT

0502

80!

aoe

SH

oY

KEYSTONE

0851-854

0856

m3

1802

=

pgo7

D808

D802

OYNAMIC

FORCUS

0885,

452

SWITCHING

(é)

To

Recu

J601

(G3)

PHONES

seat

la

a

;

sit

SP90,

\

[FUNCTION]

i

RV45!

TV

4—

RADIO

—>

OFF

RECHARGE

ABLE

[vouuME]

BATT,

PACK

|

Fs

45!

es

BP—23

|

MONO/STEREO

oo

¢

SWITCH

=

pe

©

oODRY:-BATT

To

o

\

|

SIZE

"AA"

R-CH

t

VOLT.

RES

<

“ee

(IEC

DESIGNATION

R6)

TO

se

eeine

° 6

4PCS,

6V

R~CH

ae

CN6O!

OC

IN

6V

OCO

<7

oc

FD-30A

SECTION

2

DISASSEMBLY

2-1.

REMOVAL

Note:

Remove

the

parts

in

the

numerical

order.

CABINET

@

battery

case

lid

Q@

cabinet

screw

2x

22

@

cabinet

screw

2x

30

(4

pes.)

N

Zp

Q

vear

cabinet

SS

(5)

front

cabinet

hand

strap

FD-30A

PICTURE

TUBE

AND

D

BOARD

@

speaker

CRT

support

picture

tube

D

board

picture

tube

socket

|

FD-30A

A

BOARD

AND

MPX

BOARD

A

board

@QP2x6

BP

NOTE

ON

ASSEMBLING

When

reinstalling

the

control

drum,

position

the

parts

marked

:&

A

and

%

B

of

two

drums

as

illustrated.

control

drum

—

dial

drum

@

Unsolder

Bar-ANT

board.

MPX

board

G

BOARD

|

:

a11-

FD-30A

oO

2-2.

DIAL

CORD

STRINGING

1)

Dial

Cord

Preparation

oO

>

N

~

2)

Dial

Cord

Stringing

dial

drum

o

2)

3)

w

>

t

3)

Pointer

Setting

roo)

After

the

stringing;

turn

the

tuning

knob

fully

clockwise.

Set

the

center

of

the

dial

pointer

at

this

left

side

of

rib.

dial

pointer

ie)

—N

tuning

knob

Gf

ee

NY

See

aie

~f

USS

SHY

fy

4]

a

=

S

iS)

54

&

—<

ia)

jo)

After

setting

dial

pointer,

apply

a

locking

compound,

Watchman FD-30A User manual

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