COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
AV-32F475 /Y, AV-32F475 /Z,
AV-32F485 /Y, AV-32F485 /Z
TABLE OF CONTENTS
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
Design & specifications are subject to change without notice.
× H × D)
× 68.5 cm × 57cm (37" × 27" × 22-1/2")
TV RF System
BTSC (Multi Channel Sound)
TV Receiving Channels
02ch~06ch : 54MHz~88MHz
07ch~13ch : 174MHz~216MHz
14ch~69ch : 470MHz~806MHz
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
41.25 MHz (4.5MHz)
Color Sub Carrier
Picture Tube (Visible size)
80cm (32") Measured diagonally (H : 65.6cm
× W : 49.6cm)
31.4kV ±1.3kV [at Zero beam current]
× 13cm (2-1/2" × 5"), Oval type × 2
Audio Power Output
7.5W + 7.5W
9W + 9W
Antenna Terminal (VHF / UHF)
F-type connector, 75
Video / Audio input
RCA pin jack
Y : 1V(p-p), negative sync, 75
Pb/Pr : 0.7V(p-p), 75
Mini DIN 4-pin
Y : 1V(p-p), negative sync, 75
C : 0.286V(p-p)(burst signal), 75
1V(p-p), negative sync, 75
, RCA pin jack × 3
500mV(rms)(-4dBs), high impedance, RCA pin jack
Audio Output (Fix)
500mV(rms)(-4dBs), low Impedance, (400kHz when modulated 100%),
RCA pin jack
Remote Control Unit
RM-C1258G (AA/R6/UM-3 battery
(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
(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 (NEU-
TRAL) side ground or EARTH side ground when repairing.
Some model's power circuit is partly different in the GND. The differ-
ence of the GND is shown by the LIVE : (
) side GND, the ISOLAT-
ED (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 B1 POWER
(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
(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
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 1100V AC
(r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rat-
ed 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
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
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".
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
0.15 F AC-TYPE
GOOD EARTH GROUND
White line side
Connecting the white line side of power
cord to "WHT" character side.
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.
SPECIFIC SERVICE INSTRUCTIONS
SMART CAPTION [AV-32F485]
Smart caption will appear when you press the MUTING button,
only on channels where the broadcast contains CLOSED
Decreases high sound levels, giving a regulated sound level.
FLAT SQUARE CRT
It became legible from any position by CRT with few reflection
and reflect lumps on the flat screen.
DIGITAL COMB FILTER
By the 3 line digital comb filter, the refreshed image can be
Expression of a favorite screen can be chosen by the VIDEO
DYNAMIC THEATER GAME]
Since the component signal input terminal is equipped, it
reappears direct without deteriorating the signal from DVD.
Since the V-CHIP is built in, it can choose, view and listen to a
The voice multiplex function of the MTS system is built in.
(MTS = Multi channel Television Sound system)
You program a specific channel to return to while scanning
through the channels using the CH+ and CH - keys.
VIDEO INPUT LABEL
This function is used to label video input connections for the
The world clock feature provides time differences for some of
the major cities around the world in real time.
High definition audio adds natural, clear and extraordinary
sound quality to any program.
Adds a more spacious surround sound. Music gives basic
effect and Movie for more effect.
HYPER SURROUND [AV-32F475]
Creates a deep, three-dimensional sound effect by channeling
the audio through the TV's front-firing speakers.
HOW TO IDENTIFY MODELS
How to recognize from the appearance of the model concerned is written below. Please distinguish from several contents currently
printed on the rating label
MAIN DIFFERENCE LIST
The difference between Y models and Z models are in the PICTURE TUBE.
AC 120V 60Hz
TV SCREEN SIZE : DIAGONAL
PICTURE TUBE (ITC)
2.4.1 SYSTEM BLOCK DIAGRAM
2.4.2 MAIN MI-COM (CPU) PIN FUNCTION
MAIN MI-COM /
VIDEO PROCESS /
3-LINE YC SEP.
Pin name I/O
AFT voltage for tuner (Tuning frequency control)
Key scan for front control [No signal : H]
Current for automatic beam (brightness)/contrast limit
32 MONITOR_OUT O Not used
Black level detection filter
8MHz_OUT O CPU system clock : 8MHz oscillation
O Y signal for velocity scan modulation
CPU system clock : 8MHz oscillation
Average picture level filter
Automatic phase control filter
O Color sub carrier (3.58MHz) for 3-line digital comb filter [IC5201]
10 AGC_MUTE O AGC muting for tuner (when channel select) [Muting : H]
5V (for video process circuit)
O R signal
O G signal
Flyback pulse (H. pulse)
O B signal
O H. drive (oscillation)
9V (for RGB process circuit)
9V (for H. oscillation start)
H. AFC filter
V. saw filter
O V. drive
O Parabola waveform (for sidepin correection)
47 MAIN_POWER O Power on/off switching control [Powen on : L]
X-ray detection (for protection) [Detection : H]
I/O Data for Inter IC control bus (for various devices)
Cb (external) signal
O Clock for Inter IC control bus (for various devices)
Y (external) signal
I/O Data for Inter IC control bus (for main memory)
Cr (external) signal
O Audio muting [Muting : H]
O Clock for Inter IC control bus (for main memory)
Chroma signal (for YC separation output)
O POWER / ON TIMER LED lndication [lighting : L]
Remote control sensor input [No input : H]
Y signal (for YC separation output)