COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
! SAFETY PRECAUTIONS
! MAIN DIFFERENCE LIST
! HOW TO IDENTIFY MODELS
! SPECIFIC SERVICE INSTRUCTIONS
! SERVICE ADJUSTMENTS
! PARTS LIST
STANDARD CIRCUIT DIAGRAM
TV RF System
Color Sound System
NTSC, BTSC System (Multi Channel Sound)
TV Receiving Channels and Frequency
CATV Receiving Channels and Frequency
Sub Mid Band
TV/CATV Total Channel
(0206, A-8) by (0206&01)
(0713) by (0713)
(A1) by (1422)
(JW) by (2336)
(W+1W+28) by (3764)
(W+29W+84) by (65125)
(A8, A4A1) by (01, 9699)
Video IF Carrier
Sound IF Carrier
Color Sub Carrier
120V AC, 60Hz
29" (68cm) Measured Diagonally
29kV±1kV (at zero beam current)
Audio Power Output
5×9cm Oval type×2
1Vp-p, 75 (RCA pin jack)
Audio Input (R/L)
500mVrms ( -4dBs ), High Impedance (RCA pin jack)
Y: 1Vp-p Positive (negative sync provided, when terminated with 75)
C: 0.286Vp-p (burst signal, when terminated with 75)
Variable Audio Output (R/L)
More than 01550mVrms (+6dBs)
Low impedance (400Hz when modulated 100%)
(RCA pin jack)
75(VHF/UHF) Terminal, F-Type Connector
Remote Control Unit
Design & specifications are subject to change without notice.
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. Qualified personnel should perform Service only.
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
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 that 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.
Don't short between the LIVE side ground and ISOLATED
(NEUTRAL) side ground or EARTH side ground when
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
ISOLATED(NEUTRAL) side GND or EARTH side GND and
never measure with a measuring apparatus (oscilloscope etc.)
the LIVE side GND and ISOLATED(NEUTRAL) side GND or
EARTH side GND at the same time.
If above note will not be kept, a fuse or any parts will be broken.
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).
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
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.
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
(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
(1) 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 test equipment not generally found
in the service trade.
(2) 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
" 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 ohms per volt or more sensitivity in the following
manner. Connect a 1500
! 10W resistor paralleled by a 0.15#F
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
However, in tropical area, this must not exceed 0.3V AC (r.m.s.).
This corresponds to 0.2mA AC (r.m.s.).
1500 ! 10W
GOOD EARTH GROUND
PLACE THIS PROBE
ON EACH EXPOSED
(HAVING 1000 !/V,
OR MORE SENSITIVITY)
" New chassis design enables use of a single board with simplified
" Provided with miniature tuner (TV/CATV).
" Multifunctional remote control permits picture adjustment.
" Adoption of the CHANNEL GUARD function prevents the specific
channels from being selected, unless the "ID number" is key in.
2C bus control utilizes single chip ICs.
" Adoption of the VIDEO STATUS function.
" Adoption of the ON/OFF TIMER function.
" Built-in V-CHIP system.
" With 75V/U in common (F-Type) ANT Terminal.
" SLEEP TIMER for setting in real time.
" Closed-caption broadcasts can be viewed.
" Audio Video input terminal.
" Built-in MTS system.
" Built-in HYPER-SURROUND system.
" S-VIDEO input terminal for taking best advantage of Super VHS.
" Variable Audio output terminal.
" 2 LINE Digital Comb filter Improved picture quality.
MAIN DIFFERENCE LIST
PICTURE TUBE (ITC)
HOW TO IDENTIFY MODELS
The difference between AV-N29220/R and AV- N29220/S is in the PICTURE TUBE.
As the result of the difference in PICTURE TUBE, the MAIN PWB also differ.
REMOTE CONTROL UNIT
INPUT1 (S-VIDEO, V, L/MONO, R) terminal
AUDIO OUTPUT terminal (Variable)
TV / CATV select key
VCR / DVD select keys
VIDEO STATUS key
SLEEP TIMER key
HYPER SURROUND key
FRONT CONTROL KEYS
INPUT 2 (V, L/MONO, R) terminals
CHANNEL - (Operate ) button
CHANNEL + (Operate ) button
VOLUME - button
VOLUME + button
INDICATOR lamp (TIMER / POWER)
CHANNEL select key
VCR / DVD control key