JVC AV-32430/M, AV-32430/R, AV-32430/Y, AV-32432/M, AV-32432/R Service Manual
...
52104200304
AV-32430
AV-32432
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
AV-32430/M, AV-32432/M,
GE2
AV-32430
AV-32430
/R, AV-32432/R,
/Y, AV-32432/Y
TABLE OF CONTENTS
1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.52104
2003/04
AV-32430
AV-32432
SPECIFICATION
Items Contents
Dimensions (W x H x D) 76.8cm x 66.7cm x 54.7cm (30-1/4” x 26-1/4” x 21-1/2”)
Mass 51.0kg (112.2 Ibs)
TV RF System CCIR (M)
Color Sound System NTSC, BTSC System (Multi Channel Sound)
TV Receiving Channels and Frequency
VHF LOW
VHF HIGH
TV/CATV Total Channel 180 Channels
Intermediate Frequency
Video IF Carrier
Sound IF Carrier
Color Sub Carrier 3.58MHz
Power Input AC 120V, 60Hz
Power Consumption 128W
Picture Tube 32” (80cm) Measured diagonally H:65.6cm x V:49.6cm
High Voltage 31kV±1.3kV (at zero beam current)
Speaker 8 x 12cm (3-1/4” x 4-3/4”) Oval type x 2
Audio Power Output 3W + 3W
Antenna Terminal (VHF/UHF) F-type connector, 75ohm
Video / Audio Input (1 / 2 / 3)
Video (1 / 3)
Audio (1 / 2 / 3)
S-Video (1)
Component video (2)
Audio Output (Fix) 500mV(rms), low impedance, (1kHz when modulated 100%) (RCA pin jack x 2)
AV Compulink lll 3.5mm mini jack x 1
Remote Control Unit RM-C203 (Lithium cell battery x 1)
02ch~06ch : 54MHz~88MHz
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~1 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
45.75MHz
41.25MHz (4.5MHz)
1V(p-p), 75ohm (RCA pin jack x 2)
500mV(rms) (-4dBs), high impedance (RCA pin jack x 8)
Mini DIN 4pin x 1
Y : 1V(p-p) positive (negative sync provided, when terminated with 75ohm)
C : 0.286V(p-p) (burst signal when terminated with 75ohm)
RCA pin jack x 3
Y : 1V(p-p) positive (negative sync provided, when terminated with 75ohm)
Pb/Pr : 0.7V(p-p) 75ohm
Design & specifications are subject to change without notice.
1-2 (No.52104)
SECTION 1
PRECAUTIONS
AV-32430
AV-32432
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. Replacem ent 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 pr oducts 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 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 schematic s 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 pa rts list of Service manual ma y cause
shock, fire, or other hazards.
(4) Use isolation transformer when hot chassis.
The chassis and any sub-chassis contained in some products ar e
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 I SOLATED (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.
(6) The high voltage applied to the picture tube m ust 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 con ditions 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 manufact urer of the
complete product.
(7) If any repair has been made to the ch assis, it is recomme nded that
the B1 setting should be checked or adjusted (See ADJUSTMENT
OF B1 POWER SUPPLY).
(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
10kΩ 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 hig h
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, screwheads, earphone jack,
control shafts, etc.) to be sure the pro duct is saf e to operat e with out
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 1100V 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.
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 A C ou tle t ( 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 1500ohm 10W resistor
paralleled by a 0.15µF 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 exce ed 0.3V AC
(r.m.s.). This corresponds to 0 .2mA AC (r .m.s .).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
0.15 F AC-TYPE
PLACE THIS PROBE
(11) High voltage hold down circuit ch eck.
GOOD EARTH GROUND
1500 10W
ON EACH EXPOSED
METAL PART
After repair of the high voltage hold down circui t, this circuit shall b e
checked to operate correctly.
See item "How to check the high voltage hold down circuit".
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.
A V
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to "WHT" character side.
PWB
White line side
WHT
PW
(No.52104)1-3
AV-32430
AV-32432
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
TELETEXT (CLOSED CAPTION) Title TELETEXT broadcast of C1~C4 and T1~T4 formula is receivable.
DIGITAL COMB FILTER By the three-line digital comb filter, the refreshed image can be seen.
VIDEO STATUS Expression of a favorite screen can be chosen by the VIDEO STATUS function
(STANDARD / DYNAMIC / SPORTS / GAME).
V-CHIP Since the V chip is built in, it can choose, view and listen to a healthy program.
COMPONENT VIDEO INPUT TERMINAL Since the component signal input terminal is equipped, it reappears direct without
deteriorating the signal from DVD.
MTS STEREO SYSTEM The voice multiplex function of the MTS system is built in. (MTS = Multi channel TV
Sound system)
EZ SURF By the EZ SURF function, channel ID and a program name are displayed in the screen
automatically.
RETURN PLUS you program a specific channel to return to while scanning through the channels using
the CH+ and CH- buttons.
AV COMPULINK lll By the AV COMPULINK lll function, operation interlocked with the DVD deck can be
performed from remote control.
ON / OFF & SLEEP TIMER The on/off timer lets you progr am your television to turn itself on or off. You can use it as
an alarm to wake up, to help you remember important programs, or as a decoy when
you're not home.
HYPER SCAN A quick favorite program can be looked for by the HYPER SCAN function.
FRONT PANEL LOCK This allows you to lock the keys on the front of the TV, so that a child may not accidentally
change your viewing preferences.
NOISE MUTING This feature inserts a blank blue screen over channels which are not broadcasting or are
too weak to be received clearly.
2.2 MAIN DIFFERENCE LIST
• The difference between MA models, RA model, and YA models is in the PICTURE TUBE. As the result of the difference in PICTURE
TUBE, the MAIN PWB also differ.
• The difference between AV-32430 series models and AV-32432 series models are in the FRONT CABINET color.
PART NAME AV-32430/MA AV-32430/RA AV-32430/YA
FRONT CABINET (BLACK) CM12914-010-MA
MAIN P.W.B. ASSY SGE-1064A-M2 SGE-1066A-M2 SGE-1065A-M2
CRT SOCKET P.W.B. ASSY SGE-3061A-M2 SGE-3062A-M2
AV SELECT P.W.B. ASSY SGE-5062A-M2
PICTURE TUBE (ITC) M80JUA061X06 A80AEJ15X01 A80AKB50X04
PART NAME AV-32432/MA AV-32432/RA AV-32432/YA
FRONT CABINET (SILVER) CM12914-012-MA
MAIN P.W.B. ASSY SGE-1061A-M2 SGE-1063A-M2 SGE-1062A-M2
CRT SOCKET P.W.B. ASSY SGE-3061A-M2 SGE-3062A-M2
AV SELECT P.W.B. ASSY SGE-5061A-M2
PICTURE TUBE (ITC) M80JUA061X06 A80AEJ15X01 A80AKB50X04
1-4 (No.52104)
2.3 HOW TO IDENTIFY MODELS
How to recognize from the appearance of the model concerned is written below.
Please distinguish from several contents printed on the rating label.
Indicated model name
AV-32430
AV-32432
2.4 FUNCTIONS
FRONT CONTROL PANEL
INPUT-3 (V, L, R)
REAR TERMINAL
INPUT-1
(S, V, L, R)
INPUT-2
(L, R)
AUDIO OUT
(L, R)
Indicated /M, /R or /Y model
MENU
CHANNEL -/+
VOLUME -/+
POWER SW
REMOCON
WINDOW
REMOTE CONTROL UNIT
VIDEO
STATUS
DISPLAY
MUTING
MENU
POWER
BUTTON
NUMBER
KEYS
GAME
SLEEP
C.C
EXIT
INPUT
INPUT-2
(Y, Pb, Pr)
ANTENNA
TERMINAL
VCR
CONTROL
KEYS
(No.52104)1-5
AV-32430
AV-32432
2.5 DISASSEMBLY PROCEDURE
2.5.1 REMOVING THE REAR COVER
• Unplug the power plug.
(1) Remove the 11 screws [A], as shown in Fig.1.
(2) Remove the rear cover toward you.
NOTE:
When reinstalling the REAR COVER, carefully push it inward
after inserting the chassis into the rear cover groo ve .
2.5.2 REMOVING THE TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 4 screws [E] as shown in Fig.2.
(2) When you pull out the TERMINAL BOARD, it can be
removed.
2.5.3 REMOVING THE MAIN PWB
• Remove the REAR COVER.
(1) Slightly raise the both sides of the CHASSIS BASE by
hand, and remove the 2 claws [B] (Fig.1 and Fig.2) under
the both sides of the chassis from the chassis rail.
(2) Draw the CHASSIS BASE backward along the chassis rail
[C] in the arrow direction [D] as shown in Fig.1 and Fig.2.
(If necessary, detach the wire clamp, connector's etc.)
NOTE:
When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and the MAIN PWB.
FRONT CABINET
2.5.4 REMOVING THE FRONT CONTROL PWB
• Remove the REAR COVER.
• Remove the MAIN PWB.
(1) Remove the 2 screws [F] attached the FRONT CONTROL
PWB with the front cabinet as shown in Fig.2.
(2) Then remove the FRONT CONTROL PWB.
2.5.5 REMOVING THE FRONT TERMINAL PWB
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
(1) Remove the 2 screws [G], as shown in Fig.2.
(2) Then remove the FRONT AV IN PWB.
2.5.6 REMOVING THE SPEAKER
• Remove the REAR COVER.
• Remove the CHASSIS BASE.
(1) Remove the 2 screws [H], as shown in Fig.2.
(2) Follow the same steps when removing the other hand
speaker.
2.5.7 CHECKING THE MAIN PWB
(1) Pull out the CHASSIS BASE. (Refer to REMOVING THE
CHASSIS BASE).
(2) Erect the chassis vertically so that you can easily check
from the backside of the MAIN PWB.
2.5.8 CAUTION
(1) When erecting the chassis, be careful so that there will be
no contacting with other PWB.
(2) Before turning on power, make sure that the CRT earth
wire and other connectors are properly connected.
2.5.9 WIRE CLAMPING AND CABLE TYING
(1) Be sure to clamp the wire.
(2) Never remove the cable tie used for tying the wires
together. Should it be inadvertently removed, be sure to tie
MAIN PWB
the wires with a new cable tie.
C
B
Fig.1
1-6 (No.52104)
AV-32430
AV-32432
FRONT CABINET
SPEAKER
CRT
CRT SOCKET PWB
SPEAKER
H
POWER CORD
FRONT TERMINAL
PWB
G
B
CLAW
F
FRONT
H
CONTROL
PWB
MAIN PWB
HVT
TERMINAL
BOARD
REAR COVER
CLAW
B
AV SELECTOR
PWB
A
CHASSIS BASE
D
E
Fig.2
(No.52104)1-7
AV-32430
AV-32432
2.6 REMOVING THE CRT NOTE:
• Replacement of the CRT should be performed by 2 or more
persons.
• After removing the REAR COVER, CHASSIS etc.,
(1) Putting the CRT change table on soft cloth, the CRT
change table should also be covered with such soft clo th
(shown in Fig. 3).
(2) While keeping the surface of CRT down, mount the TV set
on the CRT change table balanced will as shown in Fig. 3.
(3) Remove 4 screws marked by arrows with a box type screw-
driver as shown in Fig. 4.
NOTE:
Since the cabinet will drop when screws have been removed, be sure to support the cabinet with hands.
(4) After 4 screws have been removed, put the cabinet slowly
on cloth (At this time, be carefully so as not to damage the
front
surface of the cabinet) shown in Fig. 5.
NOTE:
• The CRT should be assembled according to the opposite sequence of its dismounting steps.
• The CRT change table should preferably be smaller
that the CRT surface, and its height be about 35cm.
CRT CHANGE TABLE
CLOTH
CRT
CHANGE
TABLE
Fig.3
CRT
Fig.4
APPROX.
35cm
BOX
TYPE
SCREW
DRIVER
CABINET
Fig.5
COATING OF SILICON GREASE FOR ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION.
Subsequent to replacement of the CRT and HV transformer or
repair of the anode cap, etc. by dismounting them, be sure to
coat silicon grease for electrical insulation as shown in Fig.6.
Wipe around the anode button with clean and dry cloth. (Fig.6)
Coat silicon grease on the section around the anode button. At
this time, take care so that any silicon greases dose not sticks
to the anode button. (Fig.7)
Silicon grease product No. KS - 650N
CRT
Anode button
Approx.
20mm (Do not
coat grease on
this section
CRT
CRT
CHANGE T ABLE
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of anode
cap.
1-8 (No.52104)
Silicon grease
coating
Fig.6
Anode button
(No sticking of
silicon grease)
Fig.7
Coating position
of silicon grease
Anode cap
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