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SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.52121
2003/5
COLOR TELEVISION
52121
2003
5
AV-32D104/AYA, AV-32D104/ARA,
AV-32D104/AMA, AV-32D304/AYA,
AV-32D304/ARA, AV-32D304/AMA
TABLE OF CONTENTS
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
AV-32D104
[RM-C1255G]
AV-32D304
[RM-C1253G]
BASIC CHASSIS
GE3


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1-2 (No.52121)
SPECIFICATION
Design & specifications are subject to change without notice.
Items
Contents
AV-32D104
AV-32D304
Dimensions (W
× H × D)
85.9 cm
× 68.4 cm × 54.8 cm (33-7/8" × 27" × 21-5/8")
Mass
52.0kg (114.4Ibs)
TV RF System
CCIR(M)
Color System
NTSC
Sound System
BTSC (Multi Channel Sound)
TV Receiving Channels
and Frequency
VHF LOW 02ch~06ch : 54MHz~88MHz
VHF HIGH 07ch~13ch : 174MHz~216MHz
UHF 14ch~69ch : 470MHz~806MHz
CATV 54MHz~804MHz
Low Band : 02~06, A-8 by 02~06&01
High Band : 07~13 by 07~13
Mid Band : A~I by 14~22
Super Band : J~W by 23~36
Hyper Band : W+1~W+28 by 37~64
Ultra Band : W+29~W+84 by 65~125
Sub Mid Band : A8, A4~A1 by 01, 96~99
TV / CATV Total Channel
180 Channels
Intermediate Frequency
Video IF Carrier 45.75 MHz
Sound IF Carrier 41.25 MHz (4.5MHz)
Color Sub Carrier
3.58 MHz
Power Input
AC120V , 60Hz
Power Consumption
128W
Picture Tube
Full square Visible size:80cm (32") measured diagonally, (W65.6 cm
× H49.6 cm)
High Voltage
31kV ±1.3kV (at zero beam current)
Speaker
5cm
× 12cm (2" × 4-3/4"), Oval type × 2
Audio Power Output
5W + 5W
Antenna Terminal (VHF / UHF)
75
unbalanced coaxial, F-type connector
INPUT1 (Rear)
VIDEO
1V(p-p), negative sync, 75
, RCA pin jack × 1
S-VIDEO
Mini DIN 4-pin
× 1
Y : 1V(p-p), negative sync, 75
C : 0.286V(p-p), (burst signal), 75
AUDIO (L/MONO, R)
500mVrms(-4dBs), high impedance, RCA pin jack
× 2
INPUT2 (Rear)
VIDEO
---------
1V(p-p), negative sync, 75
, RCA pin
jack
× 1
COMPONENT VIDEO Y&Video : 1V(p-p), negative sync, 75
,
RCA pin jack
× 1
Pb/Pr : 0.7V(p-p), 75
, RCA pin jack × 2
Y : 1V(p-p), negative sync, 75
,
RCA pin jack
× 1
Pb/Pr : 0.7V(p-p), 75
, RCA pin jack × 2
AUDIO (L / MONO, R) 500mVrms(-4dBs), high impedance, RCA pin jack
× 2
INPUT3 (Front)
VIDEO
1V(p-p), negative sync, 75
, RCA pin jack × 1
AUDIO (L / MONO, R) 500mV(rms)(-4dBs), high impedance, RCA pin jack
× 2
AUDIO OUTPUT (L / R)
500mV(rms)(-4dBs)low Impedance, (400kHz when modulated 100%) ,
RCA pin jack
× 2
AV COMPULINK lll
---------
3.5mm mini jack
× 1
Remote Control Unit
RM-C1255G (AA/R6/UM-3 battery
× 2) RM-C1253G (AA/R6/UM-3 battery × 2)


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(No.52121)1-3
SECTION 1
PRECAUTION
1.1
SAFETY PRECAUTIONS
(1) The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original
circuits. Service should be performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should not be
made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the manufacturer
of responsibility for personal injury or property damage resulting
therefrom.
(3) Many electrical and mechanical parts in the products have special
safety-related characteristics. These characteristics are often not
evident from visual inspection nor can the protection afforded by them
necessarily be obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which have these
special safety characteristics are identified in the parts list of Service
manual. Electrical components having such features are
identified by shading on the schematics and by (
) on the
parts list in Service manual. The use of a substitute replacement
which does not have the same safety characteristics as the
recommended replacement part shown in the parts list of Service
manual may cause shock, fire, or other hazards.
(4) Use isolation transformer when hot chassis.
The chassis and any sub-chassis contained in some products are
connected to one side of the AC power line. An isolation
transformer of adequate capacity should be inserted between the
product and the AC power supply point while performing any
service on some products when the HOT chassis is exposed.
(5) Don't short between the LIVE side ground and ISOLATED
(NEUTRAL) side ground or EARTH side ground when repairing.
Some model's power circuit is partly different in the GND. The difference
of the GND is shown by the LIVE : (
) side GND, the ISOLATED
(NEUTRAL) : (
) side GND and EARTH : (
) side GND.
Don't short between the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND and never measure the LIVE side
GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at
the same time with a measuring apparatus (oscilloscope etc.). If
above note will not be kept, a fuse or any parts will be broken.
(6) If any repair has been made to the chassis, it is recommended that
the B1 setting should be checked or adjusted (See ADJUSTMENT
OF B1 POWER SUPPLY).
(7) The high voltage applied to the picture tube must conform with that
specified in Service manual. Excessive high voltage can cause an
increase in X-Ray emission, arcing and possible component
damage, therefore operation under excessive high voltage
conditions should be kept to a minimum, or should be prevented.
If severe arcing occurs, remove the AC power immediately and
determine the cause by visual inspection (incorrect installation,
cracked or melted high voltage harness, poor soldering, etc.). To
maintain the proper minimum level of soft X-Ray emission,
components in the high voltage circuitry including the picture tube
must be the exact replacements or alternatives approved by the
manufacturer of the complete product.
(8) Do not check high voltage by drawing an arc. Use a high voltage
meter or a high voltage probe with a VTVM. Discharge the picture
tube before attempting meter connection, by connecting a clip lead
to the ground frame and connecting the other end of the lead
through a 10k
2W resistor to the anode button.
(9) When service is required, observe the original lead dress. Extra
precaution should be given to assure correct lead dress in the high
voltage circuit area. Where a short circuit has occurred, those
components that indicate evidence of overheating should be
replaced.
Always
use
the
manufacturer's
replacement
components.
(10) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control knobs,
metal cabinet, screw heads, earphone jack, control shafts, etc.) to
be sure the product is safe to operate without danger of electrical
shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal parts
exposed to the user, particularly any exposed metal part having a
return path to the chassis should withstand a voltage of 3000V AC
(r.m.s.) for a period of one second. (. . . . Withstand a voltage of
1100V AC (r.m.s.) to an appliance rated up to 120V, and 3000V
AC (r.m.s.) to an appliance rated 200V or more, for a period of one
second.)
This method of test requires a test equipment not generally found
in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use a line
isolation transformer during this check.). Using a "Leakage
Current Tester", measure the leakage current from each exposed
metal part of the cabinet, particularly any exposed metal part
having a return path to the chassis, to a known good earth ground
(water pipe, etc.). Any leakage current must not exceed 0.5mA AC
(r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC (r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not use a
line isolation transformer during this check.). Use an AC
voltmeter having 1000
per volt or more sensitivity in the
following manner. Connect a 1500
10W resistor paralleled by
a 0.15
µF AC-type capacitor between an exposed metal part and
a known good earth ground (water pipe, etc.). Measure the AC
voltage across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part, particularly any
exposed metal part having a return path to the chassis, and
measure the AC voltage across the resistor. Now, reverse the
plug in the AC outlet and repeat each measurement. Any
voltage measured must not exceed 0.75V AC (r.m.s.). This
corresponds to 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
(11) High voltage hold down circuit check.
After repair of the high voltage hold down circuit, this circuit shall
be checked to operate correctly.See item "How to check the high
voltage hold down circuit".
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1500
10W
0.15 F AC-TYPE
GOOD EARTH GROUND
PWB
White line side
WHT
PW
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to "WHT" character side.
A
V
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.


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1-4 (No.52121)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1
FEATURES
· Title CLOSED CAPTION broadcast of C1~C4 and T1~T4 formula is receivable.
· The voice multiplex function of the MTS system is built in.
· By the 3-line digital comb filter, the refreshed image can be seen.
· Expression of a favorite screen can be chosen by the VIDEO STATUS function.
· A program can be enjoyed with a powerful sound by the HYPER SURROUND function.
· Since the V-chip is built in, it can choose, view and listen to a healthy program.
· The RETURN + function is built-in.
· A quick favorite program can be looked for by the HYPER-SCAN function.
· Since the component signal input terminal is equipped, it reappears direct without deteriorating the signal from DVD.
· By the THEATER PRO function, a reality to which it is viewing and listening in the movie theater can be tasted. (AV-32D304 only)
· By the COMPULINK III function, operation interlocked with the DVD deck can be performed from remote control. (AV-32D304 only)
2.2
HOW TO IDENTIFY MODELS
MODEL NAME
AV-32D104
or AV-32D304
AYA , ARA or AMA
***********
DISTINGUISH NAME
How to recognize from the appearance of the model concerned is written below.
Please distinguish from several contents currently printed on the rating label.


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(No.52121)1-5
2.3
MAIN DIFFERENCE LIST
2.4
FUNCTIONS
FRONT PANEL CONTROLS
Item
AV-32D104/AYA AV-32D104/ARA AV-32D104/AMA AV-32D304/AYA AV-32D304/ARA AV-32D304/AMA
THEATER PRO BUTTON
NON
YES
WHITE BLANCE
(COLOR TEMP.)
NON
YES
GAME BUTTON
YES
NON
BBE SYSTEM
NON
YES
VIDEO-IN
(INPUT-2:REAR-TERMINAL)
NON (comnon use to Component-Y)
YES
AV COMPULINK lll
NON
YES
REMOTE CONTROL UNIT
RM-C1255G
RM-C1253G
ILLUMINATION
(REMOTE CONTROL UNIT)
NON
YES
MAIN PWB ASS'Y
SGE-1505A-M2
SGE-1509A-M2
SGE-1501A-M2
SGE-1507A-M2
SGE-1511A-M2
SGE-1503A-M2
CRT SOCKET PWB ASS'Y
SGE-3503A-M2
SGE-3505A-M2
SGE-3501A-M2
SGE-3503A-M2
SGE-3505A-M2
SGE-3501A-M2
AV SELECT PWB ASS'Y
SGE-5501A-M2
SGE-5502A-M2
FRONT CABINET ASS'Y
LC10641-006A-A
LC10641-005C-A
TERMINAL BOARD
LC20899-006A-A
LC20899-004A-A
PICTURE TUBE (ITC)
A80AKB50X04
A80AEJ15X01
A80JUA061X06
A80AKB50X04
A80AEJ15X01
A80JUA061X15
VIDEO
MENU
OPERATE
- CHANNEL +
- VOLUME +
POWER
ON TIMER
L/MONO-AUDIO-R
INPUT3
1
2
3
4
5
7
6
8
1
2
3
INPUT 3 : VIDEO
INPUT 3 : AUDIO L/MONO
INPUT 3 : AUDIO R
MENU (
) BUTTON
OPERATE (
/
) BUTTON
10
9
CHANNEL (-/+) BUTTON
VOLUME (-/+) BUTTON
POWER SW BUTTON
ON TIMER / POWER INDICATOR
REMOTE CONTROL SENSOR
6
7
8
9
4
5
10