JVC LT-26F80BU User manual

SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited No.YA534
2007/7
WIDE LCD PANEL TELEVISION
YA53420077SERVICE MANUAL
LT-26F80BU
COPYRIGHT © 2007 Victor Company of Japan, Limited
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-2 (No.YA534)
SPECIFICATION
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) 70.0cm ×53.5cm ×20.0cm [Included stand]
70.0cm ×50.0cm ×12.8cm [TV only]
Mass 12.1kg [Included stand]
10.6kg [TV only]
Power Input AC220 - 240V, 50Hz
Power Consumption 160W (Standby: 2.7W)
TV RF System CCIR (B/G, I, D/K, L)
Colour System PAL, SECAM, NTSC 3.58/4.43 [EXT only]
Stereo System NICAM (B/G, I, D/K, L), A2 (B/G, D/K)
Receiving Frequen-
cy
Analog
CATV
VHF: 46.25 MHz - 470 MHz
UHF: 470 MHz - 862.25 MHz
S1 - S20 / S21 - S41
Intermediate
Frequency
VIF
SIF
38.9 MHz (B/G, I, D/K, L)
33.4 MHz (5.5 MHz: B/G)
32.9 MHz (6.0 MHz: I)
32.4 MHz (6.5 MHz: D/K, L)
Colour Sub
Carrier Frequency
PAL
SECAM
NTSC
4.43 MHz
4.40625 MHz / 4.25MHz
3.58 MHz / 4.43 MHz
Teletext System TOP, FLOF (Fastext level 2.5), WST(World Standard system)
LCD panel 26V-inch wide aspect (16:9)
Screen Size Diagonal : 66cm (H:57.6cm ×V : 32.4cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-VGA)
Audio Power Output 8W + 8W(10% THD)
Speaker 5.1cm ×12.7cm oval type ×2 / 1.2cm round type ×2
Aerial terminal (VHF/UHF) EU-type connector, 75Ωunbalanced, coaxial
EXT-1 / EXT-2 (Input / Output) 21-pin Euro connector (SCART socket ) ×2
EXT-3(Input) Component Video
(625p/525p/625i/
525i/750p/1125i)
RCA pin jack ×3
Y : 1V (p-p), Positive (Negative sync provided), 75 Ω
Cb/Cr : 0.7V(p-p), 75 Ω
Audio 500mV (rms), High impedance, RCA pin jack ×2
EXT-4 (Input) S-Video Mini-DIN 4 pin ×1
Y: 1V (p-p), Positive (Negative sync provided), 75 Ω
C: 0.286V (p-p) (Burst signal), 75 Ω
Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×1
Audio 500mV (rms), High impedance, RCA pin jack ×2
EXT-5 (Input / Output) HDMI 19pin connector ×1
PC (RGB) Input D-sub 15pin ×1
R/G/B : 0.7V (p-p), 75Ω
HD / VD : 1V (p-p) to 5V (p-p), high impedance
< Available signal >
Horizontal : 30kHz - 69kHz
Vertical : 56Hz - 75Hz
[Resolution : 640 pixels × 480 pixels(VGA), 800 pixels × 600 pixels(SVGA), 1024 pixels × 768 pix-
els(XGA), 1280 pixels
× 1024 pixels, 1360 pixels × 768 pixels]
PC AUDIO Input 3.5mm stereo mini jack ×1
Audio Output 500mV (rms), Low impedance, RCA pin jack ×2
Headphone 3.5mm stereo mini jack ×1
Remote Control Unit RM-C1860 (AA/R6 dry cell battery ×2)

(No.YA534)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) 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.
(5) 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.
(6) 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 1000Ωper volt or more
sensitivity in the following manner. Connect a 1500Ω
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 exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
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

1-4 (No.YA534)
1.2 INSTALLATION
1.2.1 HEAT DISSIPATION
If the heat dissipation vent behind this unit is blocked, cooling
efficiency may deteriorate and temperature inside the unit will
rise. The temperature sensor that protects the unit will be
activated when internal temperature exceeds the pre-determined
level and power will be turned off automatically.Therefore,
please make sure pay attention not to block the heat dissipation
vent as well as the ventilation outlet behind the unit and ensure
that there is room for ventilation around it.
1.2.2 INSTALLATION REQUIREMENTS
Ensure that the minimal distance is maintained, as specified
below, between the unit with and the surrounding walls, as well
as the floor etc.Install the unit on stable flooring or stands.Take
precautionary measures to prevent the unit from tipping in order
to protect against accidents and earthquakes.
1.2.3 NOTES ON HANDLING
(1) WHEN TAKING UNIT OUT OF A PACKING CASE
When taking the unit out of a packing case, do not grasp
the upper part of the unit. If you take the unit out while
grasping the upper part, the LCD PANEL may be damaged
because of a pressure. Instead of grasping the upper part,
put your hands on the lower backside or sides of the unit.
(2) AS FOR PRESSING OR TOUCHING A SPEAKER
Be careful not to press the opening of the speaker in the
lower part of the unit and around them since the decorative
sheet on the surface of the openings may be deformed.
Ventilation
hole
*Diagram differs from actual appearance.
100 mm
100 mm
100 mm
100 mm
50 mm

(No.YA534)1-5
1.3 HANDLING LCD PANEL
1.3.1 PRECAUTIONS FOR TRANSPORTATION
When transporting the unit, pressure exerted on the internal LCD
panel due to improper handling (such as tossing and dropping)
may cause damages even when the unit is carefully packed. To
prevent accidents from occurring during transportation, pay
careful attention before delivery, such as through explaining the
handling instructions to transporters.
Ensure that the following requirements are met during
transportation, as the LCD panel of this unit is made of glass and
therefore fragile:
(1) USE A SPECIAL PACKING CASE FOR THE LCD PANEL
When transporting the LCD panel of the unit, use a special
packing case (packing materials). A special packing case
is used when a LCD panel is supplied as a service spare
part.
(2) ATTACH PROTECTION SHEET TO THE FRONT
Since the front (display part) of the panel is vulnerable,
attach the protection sheet to the front of the LCD panel
before transportation. Protection sheet is used when a LCD
panel is supplied as a service spare part.
(3) AVOID VIBRATIONS AND IMPACTS
The unit may be broken if it is toppled sideways even when
properly packed. Continuous vibration may shift the gap of
the panel, and the unit may not be able to display images
properly. Ensure that the unit is carried by at least 2
persons and pay careful attention not to exert any vibration
or impact on it.
(4) DO NOT PLACE EQUIPMENT HORIZONTALLY
Ensure that it is placed upright and not horizontally during
transportation and storage as the LCD panel is very
vulnerable to lateral impacts and may break. During
transportation, ensure that the unit is loaded along the
traveling direction of the vehicle, and avoid stacking them
on one another. For storage, ensure that they are stacked
in 2 layers or less even when placed upright.
1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL)
(1) Avoid placing the unit under direct sunlight over a
prolonged period of time. This may cause the optical filter
to deteriorate in quality and COLOUR.
(2) Clean the filter surface by wiping it softly and lightly with a
soft and lightly fuzz cloth (such as outing flannel).
(3) Do not use solvents such as benzene or thinner to wipe the
filter surface. This may cause the filter to deteriorate in
quality or the coating on the surface to come off. When
cleaning the filter, usually use the neutral detergent diluted
with water. When cleaning the dirty filter, use water-diluted
ethanol.
(4) Since the filter surface is fragile, do not scratch or hit it with
hard materials. Be careful enough not to touch the front
surface, especially when taking the unit out of the packing
case or during transportation.
1.3.3 PRECAUTIONS FOR REPLACEMENT OF EXTERIOR
PARTS
Take note of the following when replacing exterior parts (REAR
COVER, FRONT PANEL, etc.):
(1) Do not exert pressure on the front of the LCD panel (filter
surface). It may cause irregular COLOUR.
(2) Pay careful attention not to scratch or stain the front of the
LCD panel (filter surface) with hands.
(3) When replacing exterior parts, the front (LCD panel) should
be placed facing downward. Place a mat, etc. underneath
to avoid causing scratches to the front (filter surface).

1-6 (No.YA534)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
HDMI (High Definition Multimedia Interface)
HDMI is the first industry supported, uncompressed,
all digital audio/video interface. By connecting an
HDMI compatible device, high definition pictures can
be displayed on your TV in their digital form.
3D COMB
3D Comb is used to improve colour transitions and colour quality
of pictures.
T-V LINK
When you have a T-V LINK compatible VCR connected to the
EXT-2 Terminal on the TV,it is easier to set up the VCR and to
view videos.
ZOOM
This function can change the screen size according to the
picture aspect ratio.
OFF TIMER
This function can set the TV to automatically turn off after a set
time.
COLOUR SYSTEM
If the picture is not clear or no colour appears, change the
current colour system to another colour system.
2.2 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2
(P-P= Peak to Peak, B-W= Blanking to white peak)
Pin No. Signal designation Matching value EXT-1 EXT-2
1 AUDIO R output 500mV(rms) (Nominal),, Low impedance Used (TV OUT) Used (LINE OUT)
2 AUDIO R input 500mV(rms) (Nominal),, High impedance Used (R1) Used (R2)
3 AUDIO L output 500mV(rms) (Nominal),, Low impedance Used (TV OUT) Used (LINE OUT)
4 AUDIO GND Used Used
5 GND (B) Used Used
6 AUDIO L input 500mV(rms) (Nominal),, High impedance Used (L1) Used (L2)
7 B input 700mV(B-W), 75ΩUsed Used
8 FUNCTION SW
(SLOW SW)
Low : 0V-3V
High : 8V-12V, High impedance
Used Used
9 GND (G) Used Used
10 SCL / T-V LINK Not used Used (TV-LINK)
11 G input 700mV(B-W), 75ΩUsed Used
12 SDA Not used Not used
13 GND (R) Used Used
14 GND (YS) Used Not used
15 R / C input R : 700mV(B-W), 75Ω
C : 300mV(P-P), 75ΩUsed (R) Used (C/R)
16 Ys input (FAST SW) Low : 0V-0.4V, High : 1V-3V, 75ΩUsed Used
17 GND (VIDEO output) Used Used
18 GND (VIDEO input) Used Used
19 VIDEO output 1V(P-P) (Negative sync), 75ΩUsed (TV OUT) Used (LINE OUT)
20 VIDEO / Y input 1V(P-P) (Negative sync), 75ΩUsed (V1) Used (Y/V2)
21 COMMON GND Used Used
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
[Pin assignment]

(No.YA534)1-7
2.3 TECHNICAL INFORMATION
2.3.1 LCD PANEL
This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the
conventional CRT (Cathode Ray Tube), as a display unit.
Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light
does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals.
2.3.1.1 SPECIFICATIONS
The following table shows the specifications of this unit.
2.3.1.2 PIXEL FAULT
There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.
BRIGHT FAULT
In this pixel fault, a cell that should not light originally is lighting on and off.
For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
DARK FAULT
In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting.
For checking this pixel fault, input 100% of each R/G/B colour and find out the cell that is not lighting.
FLICKER FAULT
In the pixel fault, a cell that should light originally or not light originally is flashing on and off.
For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB colour and find out the cell that is flashing on
and off.
Item Specifications Remarks
Displayed colour 16777216 colours 256 colours for R, G, and B
Brightness 500cd/m2
Contrast ratio 800 : 1
Response time 8ms
View angle Horizontally: 160°, Vertically: 150°

1-8 (No.YA534)
2.4 BASIC OPERATION OF SERVICE MODE
2.4.1 HOW TO ENTER THE SERVICE MODE
(1) Press [MENU] key on the remote control unit to enter the
MENU screen.
(2) Press [INFORMATION] key and [MUTING] key on the re-
mote control unit simultaneously to enter the SERVICE
MODE SCREEN.
2.4.2 HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.
2.4.3 CHANGE AND MEMORY OF SETTING VALUE
SELECTION OF SETTING MENU & ITEM
•[FUNCTION /]key : Select the SETTING MENU & ITEM
•[OK] key : Decide the SETTING MENU & ITEM
CHANGE OF SETTING VALUE (DATA)
• [FUNCTION /] key
MEMORY OF SETTING VALUE (DATA)
The setting value will be stored automatically when release the
REMOTE CONTROL UNIT keys.
2.4.4 SERVICE MODE SELECT KEY LOCATION
2.4.5 SERVICE MODE SETTING ITEMS
SERVICE MODE SCREEN
Service menu
Picture Adjust
SOUND1
SOUND2
Options
TV Norm
Features
Teletext
Source
Menu Language 1
Menu Language 2
Tuner Options
26 CMO B1LO1 EX59 JVC L7 V0.65
[MUTING]
[FUNCTION ޓ/ ]
[FUNCTIONޓ/ ]
[INFORMAITION]
[MENU]
[OK]
Setting menu Setting items
Picture Adjust Source
Mode
Colour Temp.
Contrast
Brightness
Sharpness
Colour
R
G
B
Backlight
SOUND1 Menu Subwoofer
Subwoofer Level (dB)
Subwoofer Corner Freq. (x10Hz)
Menu Equalizer
Menu Headphone
Menu Hyper Sound
Menu Wide Sound
Menu Dynamic Bass
Menu Virtual Dolby
Carrier Mute
Virtual Dolby Text
SOUND2 AVL
Menu AVL
FM PRESCALE AVL ON
NICAM PRESCALE AVL ON
SCART PRESCALE AVL ON
SCART VOLUME AVL ON
FM PRESCALE AVL OFF
NICAM PRESCALE AVL OFF
SCART PRESCALE AVL OFF
SCART VOLUME AVL OFF
Options Burn-In Mode
First APS
APS Volume
AGC (dB)
Power-Up Mode
Factory Reset
Enter Flash Mode
Reset Eeprom

(No.YA534)1-9
TV Norm BG
DK
I
L
LP
M
Features PIP/PAP
Blue Background
Menu Transparency
Menu Timeout
Backlight
Single Tuner
Dynamic WB
Zoom Mode Blank
Teletext TOP TXT
Fast TXT
Teletext Language
Menu Teletext Language
Source TV
SC1
SC2
SC2 SVHS
SC3
SC3 SVHS
YPBPR
FAV
SVHS
HDMI
PC
Menu Language 1 English
German
French
Turkish
Spanish
Danish
Swedish
Dutch
Italian
Greek
Portuguese
Norwegian
Setting menu Setting items
Menu Language 2 Finnish
Polish
Czech
Hungarian
Russian
Slovak
Slovenian
Rumanian
Bulgarian
Croatian
Serbian
Hebrew
Tuner Options Main Tuner
PIP Tuner
Setting menu Setting items

1-10 (No.YA534)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
NOTE:
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• When removing each board, remove the connectors as required.
• Taking notes of the connecting points (connector numbers) makes service procedure manageable.
• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.
3.1.1 REMOVING THE FOOT ASSEMBLY
(1) Remove the 6 screws [A].
(2) Remove the FOOT ASSEMBLY.
3.1.2 REMOVING THE BACK COVER
• Remove the FOOT ASSEMBLY.
(1) Remove the 10 screws [B].
(2) Remove the 2 screws [C] and 2 screws [D].
(3) Remove the BACK COVER.
3.1.3 REMOVING THE HANGER WALL METAL
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 2 screws [F].
(2) Remove the HANGER WALL METAL.
(3) Remove the opposite one by the same method.
3.1.4 REMOVING THE SIDE CONTROL PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 2 screws [G].
(2) Remove the FUNCTION BUTTON BRACKET.
(3) Remove the 2 screws [H].
(4) Remove the FUNCTION BUTTON with the SIDE CONTROL PWB.
(5) Remove the 4 claws, which is fixing the SIDE CONTROL PWB.
(6) Remove the SIDE CONTROL PWB.
3.1.5 REMOVING THE AV JACK PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 2 screws [J].
(2) Remove the AV JACK BRACKET.
(3) Remove the 4 screws [K].
(4) Remove the AV JACK PWB.
3.1.6 REMOVING THE AMPLIFIER PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 4 screws [L].
(2) Remove the AMPLIFIER PWB.
3.1.7 REMOVING THE POWER PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 4 screws [M].
(2) Remove the POWER PWB.
3.1.8 REMOVING THE MAIN PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 2 screws [N].
(2) Remove the SOCKET COVER BRACKET.
(3) Remove the 7 screws [P].
(4) Remove the MAIN PWB.
3.1.9 REMOVING THE NOISE FILTER PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 3 screws [S].
(2) Remove the NOISE FILTER PWB with the POWER INLET
BRACKET.
(3) Remove the 2 screws [T].
(4) Remove the NOISE FILTER PWB.
3.1.10 REMOVING THE LED PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 2 screws [U].
(2) Remove the LED PWB.
3.1.11 REMOVING THE MAIN SPEAKER AND TWEETER
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
(1) Remove the 2 screws [V].
(2) Remove the MAIN SPEAKER.
(3) Remove the opposite MAIN SPEAKER by the same
method.
(4) Remove the 2 screws [W].
(5) Remove the TWEETER.
(6) Remove the opposite TWEETER by the same method.
3.1.12 REMOVING THE LCD PANEL UNIT
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
• Remove the MAIN SPEAKER.
(1) Remove the 4 screws [X] and 4 screws [Y].
(2) Remove the FRAME.
(3) Slightly raise the both sides of the LCD PANEL UNIT by hand
and remove the LCD PANEL UNIT from the FRONT PANEL.
NOTE:
• Pay special attention not to break or damage on the front of
the LCD PANEL.
• The LCD PANEL UNIT is fixed to the FRONT PANEL (at the
back side) by using double-side adhesive tapes. To remove
the LCD PANEL UNIT, remove the adhesive tape on the
FRONT PANEL slowly.
3.1.13 REMOVING THE INVERTER PWB
• Remove the FOOT ASSEMBLY.
• Remove the BACK COVER.
• Remove the MAIN SPEAKER.
• Remove the FRAME.
(1) Remove the 6 screws [Z].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB.

(No.YA534)1-11
D
BACK COVER
C
HANGER WALL
METAL
FOOT ASSEMBLY
MAIN SPEAKER
LED PWB
SIDE
CONTROL
PWB
FUNCTION
BUTTON
U
W
AV JACK
PWB
SOCKET COVER
BRACKET
MAIN PWB
A
AV JACK
BRACKET
TWEETER
NOISE
FILTER
PWB
T
S
X
Y
M
L
X
N
P
B
K
J
G
H
F
Y
V
POWER INLET
BRACKET
POWER
PWB
AMPLIFIER
PWB
LCD
PANEL
UNIT
FUNCTION
BUTTON
BRACKET
FRONT PANEL
FRAME
INVERTER
PWB
INVERTER
PWB COVER
Z

1-12 (No.YA534)
3.2 MEMORY IC REPLACEMENT
• This model uses the memory IC.
• This memory IC stores data for proper operation of the video and drive circuits.
• When replacing, be sure to use an IC containing this (initial value) data.
3.2.1 SETTINGS OF FACTORY SHIPMENT
3.2.1.1 BUTTON OPERATION 3.2.1.2 REMOTE CONTROL DIRECT OPERATION
3.2.1.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
(2) SOUND
(3) FEATURE
(4) INSTALL
Setting item Setting position
POWER Off
TV/AV TV
Setting item Setting position
ZOOM Auto
Hyper Sound Off
Setting item Setting position
Mode Bright
Contrast 55
Brightness 19
Sharpness 20
Colour 70
Colour Temp. Cool
Noise Reduction Minimum
Film Mode Off
3D Comb Off
Setting item Setting position
Volume 0
Bass 0
Treble 0
Balance 0
Sound Mode Stereo
Hyper sound Off
Setting item Setting position
Sleep Timer Off
Child Lock Off
Language English
EXT-2 Output Monitor
Default Zoom Panoramic
Blue Back Off
Setting item Setting position
Colour System AUTO
VCR Off

(No.YA534)1-13
3.3 REPLACEMENT OF CHIP COMPONENT
3.3.1 CAUTIONS
(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and the resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.
3.3.2 SOLDERING IRON
(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for easily removing parts.
3.3.3 REPLACEMENT STEPS
1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
(2) As shown in the figure, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
NOTE :
After removing the part, remove remaining solder from the
pattern.
2. How to install Chip parts
[Resistors, capacitors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder. Then heat and melt the solder at both ends of the
chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder.
(3) First solder lead Aas indicated in the figure.
(4) Then solder leads Band C.
SOLDER SOLDER
A
B
C
A
B
C

1-14 (No.YA534)
SECTION 4
ADJUSTMENT
This service manual does not describe ADJUSTMENT.
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.

(No.YA534)
VPT
Printed in Japan
Victor company of Japan, Limited
Display category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan

1-16 (No.YA534)

(No.YA534)1-17

(No.YA534)3-1
PARTS LIST
CAUTION
JThe parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the
safety.
JThe parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied.
JP.W. BOARD Ass'y will not be supplied, but those which are filled with the Parts No. in the Parts No. columns will be supplied.
ABBREVIATIONS OF RESISTORS, CAPACITORS AND TOLERANCES
RESISTORS CAPACITORS
CR Carbon Resistor C CAP. Ceramic Capacitor
FR Fusible Resistor E CAP. Electrolytic Capacitor
PR Plate Resistor M CAP. Mylar Capacitor
VR Variable Resistor CH CAP. Chip Capacitor
HV R High Voltage Resistor HV CAP. High Voltage Capacitor
MF R Metal Film Resistor MF CAP. Metalized Film Capacitor
MG R Metal Glazed Resistor MM CAP. Metalized Mylar Capacitor
MP R Metal Plate Resistor MP CAP. Metalized Polystyrol Capacitor
OM R Metal Oxide Film Resistor PP CAP. Polypropylene Capacitor
CMF R Coating Metal Film Resistor PS CAP. Polystyrol Capacitor
UNF R Non-Flammable Resistor TF CAP. Thin Film Capacitor
CH V R Chip Variable Resistor MPP CAP. Metalized Polypropylene Capacitor
CH MG R Chip Metal Glazed Resistor TAN. CAP. Tantalum Capacitor
COMP. R Composition Resistor CH C CAP. Chip Ceramic Capacitor
LPTC R Linear Positive Temperature Coefficient Resistor BP E CAP. Bi-Polar Electrolytic Capacitor
CH AL E CAP. Chip Aluminum Electrolytic Capacitor
CH AL BP CAP. Chip Aluminum Bi-Polar Capacitor
CH TAN. E CAP. Chip Tantalum Electrolytic Capacitor
CH AL BP E CAP. Chip Tantalum Bi-Polar Electrolytic Capacitor
RESISTORS
FG J KMNRHZ P
±1% ±2% ±5% ±10% ±20% ±30% +30%
-10%
+50%
-10%
+80%
-20%
+100%
-0%

3-2(No.YA534)
CONTENTS
USING P.W. BOARD & REMOTE CONTROL UNIT ................................................................................................... 3-2
EXPLODED VIEW PARTS LIST ................................................................................................................................. 3-3
EXPLODED VIEW ...................................................................................................................................................... 3-4
PRINTED WIRING BOARD PARTS LIST ................................................................................................................... 3-5
MAIN P.W. BOARD ASS'Y (VE-20332945) ....................................................................................................... 3-5
AV JACK P.W. BOARD ASS'Y (VE-20231873) ............................................................................................... 3-10
SIDE CONTROL P.W. BOARD ASS'Y (VE-20281984) ................................................................................... 3-11
LED P.W. BOARD ASS'Y (VE-20275736) ....................................................................................................... 3-11
AMPLIFIER P.W. BOARD ASS'Y (VE-20279752) ........................................................................................... 3-11
POWER P.W. BOARD ASS'Y (VE-20335633) ................................................................................................ 3-11
NOISE FILTER P.W. BOARD ASS'Y (VE-20290553) ..................................................................................... 3-13
PACKING ................................................................................................................................................................... 3-14
PACKING PARTS LIST ............................................................................................................................................. 3-14
USING P.W. BOARD & REMOTE CONTROL UNIT
P.W.B ASS'Y name P.W.B ASS'Y No.
MAIN P.W.B VE-20332945
AV JACK P.W.B VE-20231873
SIDE CONTROL P.W.B VE-20281984
LED P.W.B VE-20275736
AMPLIFIER P.W.B VE-20279752
POWER P.W.B VE-20335633
NOISE FILTER P.W.B VE-20290553
REMOTE CONTROL UNIT VE-30034032

(No.YA534)3-3
EXPLODED VIEW PARTS LIST
Ref.No. Part No. Part Name Description Local
1 VE-20305185 FRONT PANEL
2 VE-40028974 LOGO JVC
3 VE-20273439 LED LENS
4 VE-20182772 IR LENS
5 VE-30041403 MAIN SPEAKER 8ohm 12W 5.1x12.7cm(x2)
6 VE-30026617 TWEETER 8ohm 10W 1.2cm(x2)
7 VE-40024101 RUBBER BUSH (x4)
8 VE-20253410 AV JACK BRACKET
9 VE-20247574 FUNCTION BUTTON BRACKET
10 VE-20284863 FUNCTION BUTTON
11 VE-35017621 HANGER WALL METAL (x2)
12 VE-20282033 BACK COVER
13 VE-20335377 FOOT ASSEMBLY
14 VE-20240066 SOCKET COVER BRACKET
15 VE-20238012 POWER INLET BRACKET
16 VE-35008088 SCREW M4x16 For BACK COVER(x10)
17 VE-35008081 SCREW M3x9.5 For BACK COVER(x4)
18 VE-35015222 SCREW M4x12 For FOOT ASSEMBLY(x6)
19 VE-30053103 LCD PAMEL UNIT
71 VE-30051851 E-HARNESS ASSY AMP PL705 - MAIN SPEAKER LEFT
72 VE-30022542 E-HARNESS ASSY MAIN SPEAKER LEFT - TWEETER LEFT
73 VE-30051854 E-HARNESS ASSY AMP PL706 - MAIN SPEAKER RIGHT
74 VE-30022542 E-HARNESS ASSY MAIN SPEAKER RIGHT - TWEETER RIGHT
75 VE-30040239 E-HARNESS ASSY MAIN PL600 - LED
76 VE-30014524 E-HARNESS ASSY MAIN PL606 - SIDE CONTROL
77 VE-30042254 E-HARNESS ASSY MAIN PL201 - AV JACK PL100
78 VE-30042299 E-HARNESS ASSY MAIN PL1002 - AV JACK PL101
79 VE-30050442 E-HARNESS ASSY MAIN PL1004 - AMP PL709
80 VE-30048985 E-HARNESS ASSY AMP PL707 - POWER PL801
81 VE-30042711 E-HARNESS ASSY POWER PL809 - NOISE FILTER PL101
82 VE-30053985 E-HARNESS ASSY MAIN PL900/PL902 - POWER PL805
84 VE-30028117 E-HARNESS ASSY MAIN PL901 - POWER PL803
85 VE-30042120 E-HARNESS ASSY POWER PL802 - INVERTER PWB
86 VE-30053003 DIGITAL(LVDS) CABLE MAIN PL103 - LCD PANEL UNIT
101 VE-20332945 MAIN PWB
102 VE-20231873 AV JACK PWB
103 VE-20281984 SIDE CONTROL PWB
104 VE-20275736 LED PWB
105 VE-20279752 AMPLIFIER PWB
106 VE-20335633 POWER PWB
107 VE-20290553 NOISE FILTER PWB