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Watchman FD-30A - User Manual

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SERVICE
MANUAL
US
Model
Canadian
Model
FM
STEREO/AM
De
watchman
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.
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
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Summary

Specifications

TV and Radio Specifications

Details TV standards, channel coverage, frequency ranges, and antennas.

Audio and Display Specifications

Covers picture tube size, speaker, input/output details.

Power and Battery Information

Lists power requirements, battery types, and estimated battery life.

Physical Dimensions

Provides the physical dimensions of the unit.

Safety Component Warning

Alerts to critical safety components requiring careful handling.

Product Features

Integrated Radio and Video Input

Features built-in FM stereo/AM radio and a VIDEO IN jack.

Versatile Power Options

Supports multiple power sources for flexible operation.

Ergonomic Design Features

Includes a built-in stand and clear viewing screen.

Dial Cord Stringing Procedure

Dial Cord Preparation and Stringing

Steps for preparing and stringing the dial cord for the tuning mechanism.

Dial Pointer Setting

Instructions for correctly setting the dial pointer after stringing.

Mounting Diagram - Conductor Side

Disassembly Procedures

Component Removal Steps

Step-by-step guide for removing internal parts.

Post-Repair Safety Checks

Leakage Test Procedure

Method for testing AC leakage current from exposed metal parts.

Earth Ground Verification

How to find and verify a good earth ground connection.

Chip Component Replacement

Chip Component Handling Precautions

Guidelines for safely replacing chip components.

Chip Component Connection Methods

Procedures for connecting new chip components.

Parts Identification and Board Layout

Component Identification Guide

Reference for identifying various electronic components.

Circuit Board Locations

Diagram showing the location of main circuit boards.

System Block Diagram

Disassembly: Cabinet Removal

Picture Tube and D Board Assembly

Board Assembly Procedures

A Board and MPX Board Assembly

Steps for assembling the A and MPX boards.

G Board Installation

Instructions for installing the G board.

Adjustment Procedures

FM Section Adjustments

Detailed adjustments for the FM radio receiver section.

FM IF and Tracking Adjustments

Tuning FM Intermediate Frequency and tracking circuits.

FM Frequency Coverage Adjustment

Adjusting the FM band frequency coverage range.

VCO Adjustment Methods

Regular VCO Adjustment

Standard method for adjusting the Voltage Controlled Oscillator.

Simple VCO Adjustment

Simplified method for adjusting the Voltage Controlled Oscillator.

AM Section Adjustments

AM IF and Tracking Adjustments

Tuning AM Intermediate Frequency and tracking circuits.

AM Frequency Coverage Adjustment

Adjusting the AM band frequency coverage range.

TV Section Adjustments

TV Channel Display Tuning

Adjusting TV channel display for optimal picture quality.

Picture Geometry Adjustments

Horizontal and Vertical Amplitude Adjustments

Adjusting the horizontal and vertical size of the picture.

Keystone and Horizontal Frequency Adjustments

Correcting keystone and setting horizontal frequency.

SIF Adjustment

Adjusting the Sound Intermediate Frequency circuit for clear audio.

Picture Quality Adjustments

Luminance and Focus Adjustment

Adjusting picture brightness and sharpness.

Centering and Horizontal Alignment

Adjusting picture position and horizontal alignment.

Voltage and Circuit Adjustments

Adjusting specific voltages and circuits like 4.8V.

Exploded Views and Parts List

Electrical Parts List

Service Manual Supplement: Cabinet Addition

High-Voltage Hold Down Circuit Repair

Watchman FD-30A Specifications

General IconGeneral
BrandWatchman
ModelFD-30A
CategoryTV
LanguageEnglish