JVC LT-47DV1BJ User manual

SERVICE MANUAL
COPYRIGHT © 2009 Victor Company of Japan, Limited No.YA692<Rev.001>
2009/4
INTEGRATED DIGITAL TERRESTRIAL LCD TELEVISION
YA692<Rev.001>20094SERVICE MANUAL
LT-47DV1BJ/PP, LT-47DV1BU/PP
COPYRIGHT © 2009 Victor Company of Japan, Limited
<FY2 CHASSIS LINEUP>
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
BASIC CHASSIS
FY2
No.YA687: LT-32DR1BJ, LT-32DR1BU No.YA688: LT-37DR1BJ, LT-37DR1BU No.YA689: LT-42DR1BJ, LT-42DR1BU
No.YA690: LT-37DV1BJ, LT-37DV1BU No.YA691: LT-42DV1BJ, LT-42DV1BU No.YA692: LT-47DV1BJ, LT-47DV1BU

1-2 (No.YA692<Rev.001>)
SPECIFICATION
Design & specifications are subject to change without notice.
Items Contents
LT-47DV1BU LT-47DV1BJ
Dimensions ( W ×H ×D ) 109.56 cm ×73.78 cm ×31.32 cm [Included stand]
109.56 cm ×69.46 cm ×6.9 cm [TV only]
Mass 22.4 kg [Included stand]
20.6 kg [TV only]
Power Input AC220V - AC240 V, 50 Hz
Power Consumption 246 W (Standby: 0.5 W)
TV RF System Analog CCIR (B/G, I, D/K, L)
Digital DVB-T 7 MHz / 8 MHz
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 Frequency Analog VHF: 47MHz - 470MHz
UHF: 470 MHz - 862 MHz
CATV: 116MHz - 172MHz / 220MHz - 469MHz
Digital
174-230 MHz / 470-862 MHz
Intermediate
Frequency
VIF 38.9MHz (B/G, I, D/K, L)
SIF 33.4MHz (5.5MHz :B/G)
32.9MHz (6.0MHz :I)
32.4MHz (6.5MHz :D/K)
Colour Sub
Carrier Frequency
PAL 4.43MHz
SECAM 4.40625MHz / 4.25MHz
NTSC 3.58MHz / 4.43MHz
Teletext System Analog FLOF (Fastext level 2.5)
TOP
WST(World Standard system)
Digital EBU TEXT MHEG 5 UK profile
LCD panel 47V-inch wide aspect (16 : 9)
Screen Size Diagonal: 119 cm (H: 103.96 cm ×V: 58.48 cm)
Display Pixels Horizontally 1920 ×Vertically 1080 ×RGB <W-UXGA> 6220800 dots in total
Audio Power Output 10 W + 10 W
Speaker 4.5 cm ×13.0 cm, oval type ×2 (Oblique Cone)
Aerial terminal (VHF/UHF) 75 Ωunbalanced, coaxial
EXT-1 / EXT-2 (Input / Output) 21-pin Euro connector (SCART socket ) ×2
EXT-3 (Input) Component Video
750p / 1125i
525i / 525p / 625i / 625p
RCA pin jack ×3
Y : 1 V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75Ω
Pb/Pr : ±0.35V(p-p), 75 Ω
Y : 1 V (p-p), Positive (Negative sync.), 75 Ω
Cb/Cr : 0.7V(p-p), 75 Ω
Audio 500 mV (rms), High impedance, RCA pin jack ×2
EXT-4 / EXT-5 / EXT-6
(HDMI Input)
HDMI 2-row 19pin connector ×3
(Digital-input terminal is not compatible with picture signals of personal computer)
Supported format (Video) 525i/525p/625i/625p/750p(50/60)/1125i(50/60)/1125p(24/50/60)
Supported format (Audio) PCM 2ch
Digital Audio Optical Output Digital SPDIF ×1
USB Input (Photo Viewer ) USB connector (Series A) ×1
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C2500 (AAA/R03 dry cell battery ×2)

(No.YA692<Rev.001>)1-3
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS [EXCEPT FOR UK]
(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
0.7mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.35V
AC (r.m.s.). This corresponds to 0.3mA 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.YA692<Rev.001>)
1.2 SAFETY PRECAUTIONS [FOR UK]
(1) The design of this product contains special hardware and 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 product 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 product have special safety-related characteristics. These characteristics are often
not evident from visual inspection nor can the protection afforded by them necessary 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 the 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) The leads in the products are routed and dressed with ties, clamps, tubing’s, barriers and the like to be separated from live parts,
high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is
required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to
normal, after re-assembling.
WARNING
(1) The equipment has been designed and manufactured to meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant safety standards.
(4) It is essential that safety critical components are replaced by approved parts.
(5) If mains voltage selector is provided, check setting for local voltage.
1.3 INSTALLATION
1.3.1 ATTACH THE STAND TO THE TV
When installing the unit on the floor, it is required to attach the supplied stand. To attach the stand to the TV, follow the procedure
below.
21
34
STAND SHAFT
STAND BASE UNIT
SUPPORT BRACKET
STAND COVER

(No.YA692<Rev.001>)1-5
1.3.2 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.
1.3.3 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.
1.3.4 INSTALLATION REQUIREMENTS
To ensure safety in an emergency such as an earthquake, and
to prevent accidents, ensure that measures are taken to prevent
the TV dropping or falling over.
1.3.5 NOTES ON HANDLING
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.
1.4 HANDLING LCD PANEL
1.4.1 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.
1.4.2 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.
1.4.3 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).
Ventilation hole
*Diagram differs from actual appearance.
*Diagram differs from actual appearance.
200 mm
50 mm150 mm 150 mm 50 mm

1-6 (No.YA692<Rev.001>)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
100hz Clear Motion Drive
This function is able to display twice as many frames as a
conventional LCD display.
DIGITAL TUNER
This TV can receive both DVB-T (Digital terrestrial broadcasting)
and Analogue terrestrial broadcasting.
D.I.S.T. (Digital Image Scaling Technology)
This system uses line interpolation to double the number of
scanning lines and achieve high resolution, flicker-free picture.
Colour Management
This function ensures dull colours are compensated to
produce natural hues.
Picture Management
This function makes it easier to see the dark areas when a
picture has many dark areas, and makes it easier to see the
bright areas when a picture has many bright areas.
Smart Picture
This function detects the APL (Average Picture Level) and
adjusts the contrast suitable for what you are watching.
DIGITAL VNR
This function cuts down the amount of noise in the original
picture.
MPEG Noise Reduction
This function effects the block noise removal and mosquito NR
simultaneously.
MaxxAudio
This function emphasizes the bass sound.
2.2 MAIN DIFFERENCE LIST
Item LT-47DV1BJ LT-47DV1BU
POWER CORD UK Type (3-Pins) EU Type (2-Pins)

(No.YA692<Rev.001>)1-7
2.3 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 Not 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 Not used
11 G input 700mV(B-W), 75ΩUsed Not 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 (C1/R) Used (C2)
16 Ys input (FAST SW) Low : 0V-0.4V, High : 1V-3V, 75ΩUsed Not 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 (Y1/V) Used (Y2/V)
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]

1-8 (No.YA692<Rev.001>)
2.4 TECHNICAL INFORMATION
2.4.1 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.
2.4.1.1 SPECIFICATIONS
The following table shows the specifications of this unit.
2.4.1.2 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
Maximum dimensions ( W ×H ×D ) 107.56 cm ×62.08 cm ×30.3 cm
Weight 14.5 kg
Screen size Diagonal: 119 cm (H: 103.96 cm ×V: 58.48 cm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Resolution Horizontally 1920 ×Vertically 1080 ×RGB <W-UXGA> 6220800 dots in total
Pixel pitch (pixel size) Horizontally: 0.5415 mm, Vertically: 0.5415 mm
Displayed colour 1.06 Billon colours
Brightness 500 cd/m2
Contrast ratio 1400 : 1
Response time (Gray toGray) 5 ms
View angle (Horizontally) 178°
View angle (Vertically) 178°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight Cold cathode fluorescent lamp
Power supply voltage in LCD 12 V
Power supply voltage in inverter 24 V
Panel interface system LVDS (Low Voltage Differential Signaling)

(No.YA692<Rev.001>)1-9
2.4.2 VIDEO PROCESSING CPU PIN FUNCTION [IC4101 : MAIN PWB]
Pin Pin name I/O Function
1 REQUEST O Request for MIPS
2NC - Notused
3NC - Notused
4NC - Notused
5NC - Notused
6 BYTE I L fixed
7 CNVSS - GND
8NC - Notused
9NC - Notused
10 RESET I CPU reset [Reset = L]
11 XOUT O X'tal oscillation for CPU system clock (12.5MHz)
12 VSS - GND
13 XIN I X'tal oscillation for CPU system clock (12.5MHz)
14 VCC - 3.3V power supply
15 NC - Not used
16 BL_ON_IN I Detect power on/off control of back-light
17 MAIN_VD I RGB_Vsync input
18 VD I Vsync of LVDS drive
19 NC - Not used
20 SCL_EEPROM O Clock for I2C bus (for IC4102: MEMORY)
21 NC - Not used
22 SDA_EEPROM I/O Data for I2C bus (for IC4102: MEMORY)
23 VD I Vsync of LVDS drive
24 NC - Not used
25 NC - Not used
26 NC - Not used
27 SCL3 I Clock for I2C bus
28 SDA3 I/O Data for I2C bus
29 E8_DATAO O Data for Debugging Emulator
30 E8_DATAI I Data for Debugging Emulator
31 E8_CLK I Clock for Debugging Emulator
32 E8_BUSY O Busy for Debugging Emulator
33 T2R_TXD O Serial Interface for service
34 T2R_RXD I Serial Interface for service
35 NC - Not used
36 NC - Not used
37 MODE_SEL I H fixed
38 NC - Not used
39 E8_EPM I Setting for flash write mode
40 NC - Not used
41 NC - Not used
42 NC - Not used
43 FORZA_RST O Reset for IC5001
44 E8_CE I Setting for flash write mode
45 SDA_FORZA I/O Data for I2C bus (for IC5001)
46 SCL_FORZA O Clock for I2C bus (for ICIC5001)
47 NC - Not used
48 NC - Not used
49 CS O SPI chip select for LVDS drive
50 CARIB_RST O Reset for LVDS drive
51 BL_ON O Power on/off control for back-light [ON = H]
52 LCD_POW O Power on/off control for LCD drive [ON = H]
53 LVDS_SEL - Not used
54 NC - Not used
55 NC - Not used
56 NC - Not used
57 MODE3 - Not used
58 MODE2 - Not used
59 MODE1 - Not used
60 VCC - 3.3V power supply
61 MODE0 - Not used
62 VSS - GND
63 NC - Not used
64 NC - Not used
65 NC - Not used
66 NC - Not used
67 NC - Not used
68 NC - Not used
69 NC - Not used
70 NC - Not used
71 STATUS - Not used
72 NC - Not used
73 LCD_POW_IN I Detect power on/off control of LCD drive
74 AUDIO_RST O Reset for IC4501
75 SDA_AUDIO O Data for I2C bus (for IC4501)
76 SCL_AUDIO O Clock for I2C bus (for IC4501)
77 NC - Not used
78 NC - Not used
79 NC - Not used
80 NC - Not used
81 NC - Not used
82 NC - Not used
83 NC - Not used
84 NC - Not used
85 NC - Not used
86 NC - Not used
87 NC - Not used
88 NC - Not used
89 NC - Not used
90 NC - Not used
91 NC - Not used
92 NC - Not used
93 RF_AGC - Not used
94 AVSS - GND
95 EE_SENS I Eco sensor detection
96 VREF - 3.3V power supply
97 AVCC - 3.3V power supply
98 MISO O SPI data for LVDS drive
99 MOSI I SPI data for LVDS drive
100 SCLK O SPI clock for LVDS drive
Pin Pin name I/O Function

1-10 (No.YA692<Rev.001>)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.
• Be sure to reattach the wire clamps removed during the procedure to the original positions. (Attaching the wire clamps in wrong
positions may affect the performance.)
REFERENCE:
When removing each board, remove the connector if necessary. The operation is easier if you write down the connection points
(connector numbers) of the connector. For connection of each board, refer to the "WIRING DIAGRAM" of the Standard Circuit
Diagram.
3.1.1 REMOVING THE REAR COVER (Fig.3-1)
(1) Remove the ANALOG COVER.
(2) Remove the 1 screw [A].
(3) Remove the STAND COVER.
(4) Remove the 1 screw [B].
(5) Remove the SUPPORT BRACKET.
(6) Remove the SCREW CAP(x 12).
(7) Remove the 10 screws [C] and 8 screws [D].
(8) Remove the REAR COVER.
3.1.2 REMOVING THE VESA BRACKET (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 4 screw [E].
(2) Remove the VESA BRACKET(x 4).
3.1.3 REMOVING THE MICROPHONE (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [F].
(2) Remove the MIC HOLDER with MICROPHONE.
(3) Remove the STICK SHEET
(4) Remove the MICROPHONE.
3.1.4 REMOVING THE MAIN PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 2 hooks [a] and 2 screws [G].
(2) Remove the DIGITAL BASE.
(3) Remove the 2 hooks [b].
(4) Remove the TERMINAL BASE.
(5) Remove the 6 screw [H].
(6) Remove the MAIN PWB.
3.1.5 REMOVING THE POWER PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the POWER CORD.
(1) Remove the 5 screws [J].
(2) Remove the POWER PWB.
3.1.6 REMOVING THE HP/USB PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [K].
(2) Remove the HP/USB PWB.
3.1.7 REMOVING THE CAPSENS PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the CAPSENS PWB.
3.1.8 REMOVING THE IR PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [L].
(2) Remove the IR PWB.
3.1.9 REMOVING THE AC INLET PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 2 screws [M].
(2) Remove the AC INLET PWB.
3.1.10 REMOVING THE STAND (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND COVER.
• Remove the SUPPORT BRACKET.
(1) Remove the 4 screws [N].
(2) Remove the STNAD.
3.1.11 REMOVING THE SPEAKER (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND COVER.
• Remove the SUPPORT BRACKET.
• Remove the STNAD.
(1) Remove the 4 screws [P] and 2 screws [Q].
(2) Remove the ASSIST BRACKET(L/R).
(3) Remove the 1 screw [R].
(4) Remove the SUPPORT BASE.
(5) Remove the SPEAKER(L/R).
3.1.12 REMOVING THE LED PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND COVER.
• Remove the STNAD.
• Remove the SUPPORT BASE.
(1) Remove the 1 screw [S].
(2) Remove the LED PWB.
3.1.13 REMOVING THE LCD PANEL UNIT (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the ASSIST BRACKET(L/R).
• Remove the MAIN PWB.
• Remove the POWER PWB.
(1) Remove the 2 screws [T].
(2) Remove the CENTER FRAME.
(3) Remove the 2 screws [U].
(4) Remove the BOTTOM FRAME.
(5) Remove the 2 screws [V].
(6) Remove the TOP BRACKET(L/R).
(7) Remove the 4 hooks [c], 2 screws [W] and 4 screws [X].
(8) Remove the LCD PANEL UNIT from the FRONT PANEL.
(9) Remove the 2 screws [Y] and 2 screws [Z].
(10) Remove the MAIN FRAME(L/R) from the LCD PANEL
UNIT.

(No.YA692<Rev.001>)1-11
Fig.3-1
FRONT
STAND
STAND COVER
SUPPORT
BRACKET
LCD PANEL UNIT
CC
BB
DD
HH
HH
JJ
FF
DD
DD
VV TT
UU
UU
TT
ZZ EE
EE
EE
MM
YY
VV
ZZ
EE
WW
PP
NN
NN
QQ
AA
XX
XX
KK
LL
SS
RR
XX
XX
PP
YY
QQ
PP
WW
DD
DD
GG
CC
CC
REAR COVER
TERMINAL BASE
ASSIST
BRACKET
ASSIST BRACKET
MAIN PWB
SUB PWB
POWER PWB
INSULATOR
MIC HOLDER
MICROPHONE
VESA BRACKET
DIGITAL BASE
ANALOG COVER
SCREW CAP
SCREW CAP
aa
bb
VESA BRACKET
SIDE BRACKET
SIDE
BRACKET
SIDE BRACKET
FRONT PANEL
AC INLET PWB
TOP BRACKET TOP
BRACKET
HP/USB PWB
CAPSENS PWB SPEAKER
SPEAKER
IR PWB
LED PWB
SUPPORT
BASE
CENTER FRAME
BOTTOM
FRAME
MAIN FRAME (L)
MAIN
FRAME (R)

1-12 (No.YA692<Rev.001>)
3.1.14 REMOVING THE LCD CONTROL PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 3 screws [A].
(2) Remove the LCD CONTROL PWB COVER.
(3) Remove the CONTROL PWB.
3.1.15 REMOVING THE INVERTER PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 5 screws [B].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB (MASTER/SLAVE).
3.1.16 REMOVING THE BACKLIGHT UNIT (Fig.3-2)
• Remove the REAR COVER.
• Remove the LCD PANEL UNIT.
(1) Remove the 12 screws [C] and 4 hooks [a].
(2) Remove the PANEL FRAME.
(3) Remove the LCD PANEL from the BACKLIGHT UNIT.
Fig.3-2
LCD PANEL
PANEL FRAME
INVERTER PWB
COVER
INVERTER PWB
COVER
LCD CONTROL PWB
COVER
C
INVERTER PWB (MASTER)
INVERTER PWB (SLAVE)
A
B
B
LCD CONTROL
PWB
LCD PANEL UNIT
BACK LIGHT UNIT
a
a

(No.YA692<Rev.001>)1-13
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 MEMORY IC TABLE
3.2.2 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug from the AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting values.
3. Power on
Connect the power plug to the AC outlet and switch on the power.
4. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS and set the receive channels (Channels Preset) as described.
5. User setting
Check the user setting items according to the given in page later. Where these do not agree, refer to the OPERATING
INSTRUCTIONS and set the items as described.
6. SERVICE MODE setting
Verify what to set in the SERVICE MODE, and set whatever is necessary (Fig.3-2). Refer to the SERVICE ADJUSTMENT for setting.
3.2.3 SERVICE MODE SETTING
SERVICE MODE SCREEN
Fig.3-2
SETTING ITEM
3.2.4 SETTINGS OF FACTORY SHIPMENT
3.2.4.1 BUTTON OPERATION
3.2.4.2 REMOTE CONTROL DIRECT OPERATION
Symbol Number of pins Mounting PWB Main content of data
IC1003 8-pin MAIN PWB Setting data for IC1001(MAIN CPU) is memorized.
IC3004 8-pin MAIN PWB E-DID DATA for HDMI is memorized.
IC3005 8-pin MAIN PWB E-DID DATA for HDMI is memorized.
IC3006 8-pin MAIN PWB E-DID DATA for HDMI is memorized.
IC4102 8-pin MAIN PWB Setting value of IC4101(VIDEO PROCESS CPU) is memorized.
Press [1] key
ADJUSTMENT MODE SCREEN
SERVICE MENU SCREEN
S001 R DRIVE M 000
S001 R DRIVE M 000
Service Menu
Adjust
Monitor Mode
System Configuration
Software Update
I2c Stop Mode
EDID Write Protect
HDMI_EQ Setting
Software Version Check
Calibration Setting
1
2
3
4
5
6
7
8
9
Apply
Cancel
Navigate
Setting items Settings Item No.
Video system setting Adjust S001 - S003
Setting item Setting position
Power Off
Channel PR1
Volume 10
TV/AV TV
AC SW On
Setting item Setting position
Channel PR01
Volume 10
Sub Power Off
Zoom Auto
Sleep Timer Off
Subtitle Selection On
Menu Language English
Country United Kingdom
System Language English
Place of Installation Home

1-14 (No.YA692<Rev.001>)
3.2.4.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
(2) SOUND
(3) SYSTEM SETUP
(4) PR INSTALLATION
Setting item Setting position
Picture Mode Bright
Colour Temp. Cool
Features
Super Digipure Mid
Colour Management On
Picture Management On
Smart Picture On
Dynamic Backlight On
MPEG Noise Reduction Off
Colour System Auto
4:3 Aspect Setting Panoramic
1080 Auto Setting Full
Setting item Setting position
Stereo / I•II Stereo Sound
MaxxAudio Low
MaxxBass 3(Low), 5(High)
MaxxTreble 3(Low), 4(High)
MaxxStereo 0(Low), 5(High)
MaxxVolume Off
Voice Enhancer Off
Balance Low
Digital Audio Output PCM
Setting item Setting position
Time Zone Auto
System Language English
Assistive Services -
Enter PIN code 0000
Maturity Rating None
Connection Setting EXT-3 Setting: Component
EXT ID Setting: ----
Blue Back On
Power Lamp On
Radio Mode Off
Eco Mode Off
Hand Clap Function On
Auto Shut Off On
Setting item Setting position
Menu Language English
Antenna Power Off
Favourite Setting Select None
PR Lock Lock None

(No.YA692<Rev.001>)1-15
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

1-16 (No.YA692<Rev.001>)
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the
REMOTE CONTROL UNIT and the other is the
conventional method using adjustment parts and
components.
(2) The adjustment using the REMOTE CONTROL UNIT is
made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting
values.
(3) Make sure that connection is correctly made AC to AC
power source.
(4) Turn on the power of the TV and measuring instruments for
warming up for at least 30 minutes before starting
adjustments.
(5) If the receive or input signal is not specified, use the most
appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors,
transformers and condensers) not shown in the adjustment
items of this service adjustment.
4.2 PRESET SETTING BEFORE ADJUSTMENTS
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator) [PAL]
• Remote control unit
4.4 BASIC OPERATION OF SERVICE MODE
4.4.1 HOW TO ENTER THE SERVICE MODE
(1) Press [INFORMATION] key and [MUTING] key on the
remote control unit simultaneously to enter the SERVICE
MODE SCREEN.
(2) In the SERVICE MENU, press the [1] key to display
ADJUSTMENT MODE SCREEN.
4.4.2 HOW TO EXIT THE SERVICE MODE
Press the [BACK] key to exit the Service mode.
4.4.3 SERVICE MODE SELECT KEY LOCATION
Setting item Settings position
Picture Mode Standard
Picture Adjustments Centre
Colour Temp. Normal
Super Digipure Auto
Movie Theatre Auto
Colour Management On
Picture Management On
Zoom Full
Service Menu
Adjust
Monitor Mode
System Configuration
Software Update
I2c Stop Mode
EDID Write Protect
HDMI_EQ Setting
Software Version Check
Calibration Setting
1
2
3
4
5
6
7
8
9
Apply
Cancel
Navigate
SERVICE MENU SCREEN
[MUTING] key
[FUNCTION
/] key
[INFORMATION] key
[MENU] key [BACK] key
[Function/] key

(No.YA692<Rev.001>)1-17
4.4.4 SERVICE MODE FLOW CHART
SERVICE MENU SCREEN
Service Menu
Adjust
Monitor Mode
System Configuration
Software Update
I2c Stop Mode
EDID Write Protect
HDMI_EQ Setting
Software Version Check
Calibration Setting
ADJUSTMENT MODE MONITOR MODE
SYSTEM CONFIGRATION SOFTWARE UPDATE
I2C STOP MODE EDID WRITE PROTECT
HDMI_EQ SETTING SOFTWARE VERSION CHECK
SOUND CALIBRATION SETTING
S001 R DRIVE M 000
S001 R DRIVE M 000
Selected source RF Frecuency 045.25
Signal format ----- Signal Strength 0
UTC Signal Quality 0
Service Name ----- ONID 0
Video No Signal LCN Scart1
Audio BG NoSound Language English
Network Name CA No Information
Service Type
Software Upgrade Application 52232-0.25.03.0 (dev)
Upgrade menu Local upgrades/applications
Local upgrades/applications No software found on media
Current software info
Monitor Mode
No display
Edid Write Protect
Back:EXIT
Back:EXIT
Enable
HDMI EQ Setting
HDMI 1.3 compliant
[1] key [2] key
[3] key [4] key
[5] key [6] key
[7] key [8] key
[9] key
1
2
3
4
5
6
7
8
9
Software Version Check
TVM 0123456789ABCDEF
E2PROM LCH60504-001A
CHM 8765-4321
Carib soft 0001
Carib data 0001
Build May 19 2008 12:34:56
Calibration Setting
Secam-L ---
Secam-L' ---
Start
AUS GRC TWN
AUT HUN UND
BEL IRL
BGR ITA
CHE LUX
CZE NLD
DEU NOR
DNK POL
ESP PRT
FIN SGP
FRA SWE
GBR
01:Australia
Country
System Configuration
13
TUR
English Hungarian Serbian
German Russian Slovak
French
Italian
Spanish Czech
Catalan Bulgarian
Dutch Ukrainian
Danish Turkish
Swedish Romanian
Norwegian Arabic
Finnish Chinese
Polish
Language Maturlty Rating
21
Croatian
Greek
Portuguese
Slovenian
Taiwanese
xxxxxx
Subtitle On
xxxxxx
Model
xxxxxx
Debug Menu On
xxxxxx
Notification Log
xxxxxx
UI Printf level
xxxxxx
Store
Install
Cancel
Navigate
Apply
Cancel
Navigate
Cancel
Cancel
Start

1-18 (No.YA692<Rev.001>)
4.4.5 SERVICE MODE ITEMS
4.4.5.1 ADJUSTMENT MODE
This mode is used to adjust the VIDEO CIRCUIT.
HOW TO ENTER THE ADJUSTMENT MODE
When the SERVICE MENU SCREEN of SERVICE MODE is
displayed, press [1] key to enter the ADJUSTMENT MODE.
DESCRIPTION OF STATUS DISPLAY
(1) COLOUR TEMP.
(2) SETTING ITEM NAME
Setting item name are displayed.
(3) SETTING ITEM NO.
Setting item numbers are displayed. The setting item
numbers to be displayed are listed below.
(4) SETTING VALUE (DATA)
The SETTING VALUE is displayed.
CHANGE AND MEMORY OF SETTING VALUE
SELECTION OF SETTING ITEM
• [FUNCTION /] key.
For scrolling up / down the setting items.
CHANGE OF SETTING VALUE (DATA)
•[FUNCTION /]key.
For scrolling up / down the setting values.
MEMORY OF SETTING VALUE (DATA)
Changed setting value is memorized by pressing [MUTING]
key.
4.4.5.2 MONITOR MODE
This mode displays the signal status of channel that has been
selected now.
4.4.5.3 SYSTEM CONFIGRATION
This mode selects the function that can be used by the user
menu.
4.4.5.4 SOFTWARE UPDATE
This mode updates the version of software.
4.4.5.5 I2C STOP MODE [NO DISPLAY]
This mode is unused.
4.4.5.6 EDID WRITE PROTECT
This mode sets memory with EDID data to write protection.
4.4.5.7 HDMI_EQ SETTING
This mode switches HDMI1.3 compliant and AWG28.
4.4.5.8 SOFTWARE VERSION CHECK
This mode displays the version of microcomputer software and
memory.
4.4.5.9 SOUND CALIBRATION SETTING
This mode sets SOUND CALIBRATION.
H:COOL
M : NORMAL
L:WARM
Item No. Item Variable range Setting value
S001 R DRIVE 000 - 255 000
S002 G DRIVE 000 - 255 000
S003 B DRIVE 000 - 255 000
ADJUSTMENT MODE
(4) SETTING VALUE (DATA)
(2) SETTING ITEM NAME
(1) COLOUR TEMP.
S001 R DRIVE M 000
S001 R DRIVE M 000
(3) SETTING ITEM No.

(No.YA692<Rev.001>)1-19
4.5 ADJUSTMENT PROCEDURE
SECTION 5
TROUBLESHOOTING
5.1 SELF CHECK FUNCTIONS
5.1.1 OUTLINE
This model has a "Self-diagnosis function," which checks the operation state of the circuits inside the set, and informs us of a failure.
Diagnosis is performed when the power is turned on, and information input to the main microcomputer is monitored at all time. The
diagnosis is displayed by LED flashing.
5.1.2 INDICATION OF SELF DIAGNOSIS BY USING LED
Flashing LEDs located on the front panel indicate the result of self-diagnosis.
<Explanation of operation>
If an error is detected, the power is turned off.
Shortly after the power is turned off, the POWER LED will be blinked.
Power cannot be turned on until the power cord takes out and inserts, after the power is turned off.
Item Measuring
instrument Adjustment part Description
SOUND
CALIBRATION
Remote control unit [9. Calibration Setting] (1) Receive any bilingual broadcast.
(2) Select "9. Calibration Setting" from the SERVICE
MODE.
(3) Press the "OK" key to start the calibration.
(4) After "Finish" is displayed, press the [MENU] key to
exit the menu.
WHITE BALANCE
(HIGHLIGHT)
Remote control unit
Signal generator
[1. Adjust]
S001: R DRIVE (Red drive)
S002: G DRIVE (Green drive)
S003: B DRIVE (Blue drive)
(1) Receive a PAL 75% all white signal.
(2) Set PICTURE MODE to "STANDARD".
(3) Set ZOOM to "FULL".
(4) Set COLOUR TEMP. to "NORMAL".
(5) Select "1. Adjust" from the SERVICE MODE.
(6) Adjust to Keep one of <S001> (Red drive),
<S002> (Green drive) or <S003> (Blue drive)
unchanged, then lower the other two so that the all-
white screen is equally white throughout.
NOTE:
Set one or more of <S001>, <S002>, and <S003>
to "000".
(7) Check that white balance is properly tracked from low
light to high light. If the white balance tracking is
deviated, adjust to correct it.
(8) Press the [MUTING] key to memorize the set value.
Type of error POWER LED flash cycle
Low bias line short
protection
Repeating slow flashes 9 times and fast
flashes 9 times.

(No.YA692<Rev.001>)
VSE
Printed in Japan
Victor Company of Japan, Limited
Display Division 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan