JVC LT-26A80SU User manual

SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited No.YA509
2007/4
LCD INTEGRATED DIGITAL TELEVISION
YA50920074SERVICE MANUAL
LT-26A80SU, LT-26A80ZU, LT-26DA8BJ,
LT-26DA8SJ, LT-26DA8SU, LT-26DA8ZU,
LT-26DT8ZJ, LT-32A80SU, LT-32A80ZU,
LT-32DA8BJ, LT-32DA8SJ, LT-32DA8SU,
LT-32DA8ZU, LT-32DT8ZJ
COPYRIGHT © 2007 Victor Company of Japan, Limited
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
[DA8 series]
[DT8 series]
[A80 series]
BASIC CHASSIS
FT3

1-2 (No.YA509)
SPECIFICATION
Design & specifications are subject to change without notice.
Items
Contents
LT-26A80SU
LT-26A80ZU
LT-26DA8SU
LT-26DA8ZU
LT-26DA8BJ
LT-26DA8SJ
LT-26DT8ZJ
Dimensions ( W ×H ×D ) 67.2 cm ×51.9 cm ×23.0 cm [Included stand]
67.2 cm ×47.1 cm ×10.7 cm [TV only]
Mass 11.2 kg [Included stand]
10.4 kg [TV only]
11.6 kg [Included stand]
10.8 kg [TV only]
Power Input AC220V - AC240 V, 50 Hz
Power Consumption 105 W (Standby: 1.6 W) 116 W (Standby: 1.6 W)
TV RF System Analog CCIR (B/G, I, D/K, L) CCIR (I)
Digital --- DVB-T
Colour System PAL,
SECAM,
NTSC 3.58/4.43 [EXT only]
PAL,
NTSC 3.58/4.43 [EXT only]
Stereo System NICAM (B/G, I, D/K, L), A2 (B/G, D/K) NICAM (I)
Receiving
Frequency
Analog VHF: 47MHz - 470MHz
UHF: 470 MHz - 862 MHz
CATV: 116MHz - 172MHz / 220MHz - 469MHz
UHF: 470 MHz - 862 MHz
Digital --- UHF:
177.5 MHz - 858 MHz UHF: 474 MHz - 850 MHz
Intermediate
Frequency
VIF 38.9MHz (B/G, I, D/K, L) 38.9MHz (I)
SIF 33.4MHz (5.5MHz :B/G)
32.9MHz (6.0MHz :I)
32.4MHz (6.5MHz :D/K)
32.9MHz (6.0MHz :I)
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)
FLOF (Fastext level 2.5)
WST(World Standard system)
Digital --- EBU TEXT MHEG 5 UK profile
LCD panel 26V-inch wide aspect (16 : 9)
Screen Size Diagonal : 66 cm (H: 57.6 cm ×V: 32.4 cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-XGA)
Audio Power Output 6 W + 6 W
Speaker 5.0 cm ×12.0 cm, oval type ×2
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
625p / 525p / 625i / 525i
Audio
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
500 mV(rms) (-4dBs), high impedance, RCA pin jack ×2
EXT-4 / EXT-5
(HDMI Input)
Video/Audio HDMI 2-row 19pin connector ×2
(Digital-input terminal is not compatible with picture signals of personal computer)
Digital Audio Optical Output --- Digital SPDIF ×1
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C1508
(AA/R6 dry cell battery ×2)
RM-C1821
(AA/R6 dry cell battery ×2)

(No.YA509)1-3
Design & specifications are subject to change without notice.
Items
Contents
LT-32A80SU
LT-32A80ZU
LT-32DA8SU
LT-32DA8ZU
LT-32DA8BJ
LT-32DA8SJ
LT-32DT8ZJ
Dimensions ( W ×H ×D ) 80.0 cm ×59.1 cm ×23.0 cm [Included stand]
80.0 cm ×54.5 cm ×9.9 cm [TV only]
Mass 13.8 kg [Included stand]
13.0 kg [TV only]
14.3 kg [Included stand]
13.5 kg [TV only]
Power Input AC220V - AC240 V, 50 Hz
Power Consumption 114 W (Standby: 1.6 W) 125 W (Standby: 1.6 W)
TV RF System Analog CCIR (B/G, I, D/K, L) CCIR (I)
Digital --- DVB-T
Colour System PAL
SECAM
NTSC 3.58/4.43 [EXT only]
PAL
NTSC 3.58/4.43 [EXT only]
Stereo System NICAM (B/G, I, D/K, L), A2 (B/G, D/K) NICAM (I)
Receiving
Frequency
Analog VHF: 47MHz - 470MHz
UHF: 470 MHz - 862 MHz
CATV: 116MHz - 172MHz / 220MHz - 469MHz
UHF: 470 MHz - 862 MHz
Digital --- UHF:
177.5 MHz - 858 MHz UHF: 474 MHz - 850 MHz
Intermediate
Frequency
VIF 38.9MHz (B/G, I, D/K, L) 38.9MHz (I)
SIF 33.4MHz (5.5MHz :B/G)
32.9MHz (6.0MHz :I)
32.4MHz (6.5MHz :D/K)
32.9MHz (6.0MHz :I)
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)
FLOF (Fastext level 2.5)
WST(World Standard system)
Digital --- EBU TEXT MHEG 5 UK profile
LCD panel 32V-inch wide aspect (16 : 9)
Screen Size Diagonal : 80 cm (H: 69.7 cm ×V: 39.2 cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-XGA)
Audio Power Output 6 W + 6 W
Speaker 5.0 cm ×12.0 cm, oval type ×2
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
625p / 525p / 625i / 525i
Audio
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
500 mV(rms) (-4dBs), high impedance, RCA pin jack ×2
EXT-4 / EXT-5
(HDMI Input)
Video/Audio HDMI 2-row 19pin connector ×2
(Digital-input terminal is not compatible with picture signals of personal computer)
Digital Audio Optical Output --- Digital SPDIF ×1
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C1508
(AA/R6 dry cell battery ×2)
RM-C1821
(AA/R6 dry cell battery ×2)

1-4 (No.YA509)
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
0.5mA 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

(No.YA509)1-5
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.

1-6 (No.YA509)
1.3 INSTALLATION
1.3.1 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.
1.3.2 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.
1.3.3 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.
1.3.4 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.
VENTILATION HOLE
*Diagram differs from actual appearance.
*Diagram differs from actual appearance.
150 mm
200 mm
150 mm
200 mm
50 mm
POWER
It fixes in a band.
TV STAND
*Diagram differs from actual appearance.

(No.YA509)1-7
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).

1-8 (No.YA509)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 SYSTEM SETTEING
(1) Press the [INFORMATION] key and [MUTING] key
simultaneously, then enter the SERVICE MODE(Fig.2-1).
(2) When the Main Menu is displayed, press [9].
(3) The screen shown in Fig.2-2 is displayed, and the
SYSTEM SETTING starts.
NOTE:
When the SYSTEM SETTING is performed, all settings are
reset to the factory setting. Perform the setting again.
2.2 FEATURES
DIGITAL TUNER [DA8/DT8 series only]
This TV can receive both DVB-T (Digital terrestrial broadcasting)
and Analogue terrestrial broadcasting.
HDMI INPUT
By connecting a HDMI compatible device, high definition
pictures can be displayed on your TV in their digital form.
MOVIE THEATRE
This function displays a cinema film picture more smoothly and
naturally on the screen.
DIGITAL VNR
This function cuts down the amount of noise in the original
picture.
3D Cinema Sound
You can enjoy sounds with a wider ambience.
2.3 MAIN DIFFERENCE LIST
Be sure to perform the following operation at the end of the
procedure.
SERVICE MENU SCREEN
SERVICE MENU
SERVICE MENU
1.ADJUST
1.ADJUST
2.SELF_CHECK
2.SELF_CHECK
3.I2C STOP
3.I2C STOP
Press [9] key
SHIPPING SCREEN
*** SHIPPING STRAT ***
*** SHIPPING STRAT ***
PR List Empty
Fig. 2-1
Fig. 2-2
Item LT-26A80SU
LT-32A80SU
LT-26A80ZU
LT-32A80ZU
LT-26DA8SU
LT-32DA8SU
LT-26DA8ZU
LT-32DA8ZU
LT-26DA8BJ
LT-32DA8BJ
LT-26DA8SJ
LT-32DA8SJ
LT-26DT8ZJ
LT-32DT8ZJ
Paint Color Silver Black Silver Black Silver ×Black Silver Black
Digital Tuner NO ←YES ←← ← ←
Teletext (Analog) TOP/FLOF ←←←FLOF ←←
Teletext (Digital) NO ←EBU TEXT ←
MHEG 5 UK profile ←←
Broadcasting System B/G, D/K, I, L ←←← I←←
RF System PAL/SECAM ←←←PAL ←←
Stereo System A2/NICAM ←←←NICAM ←←
Power cord Plug Type
EU Type (2 Pins) ←←← UK Type (3 Pins) ←←
Indoor ANT Power Supply NO ←YES ←← ← ←
Digital Audio Optical Output NO ←YES ←← ← ←
Remote Control Unit RM-C1508-1C ←RM-C1821-1C ←← ← ←

(No.YA509)1-9
2.4 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 (SCL2 / TV-LINK)
11 G input 700mV(B-W), 75ΩUsed Used
12 SDA Not used Used (SDA2)
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 (C2/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 Used
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]

1-10 (No.YA509)
2.5 TECHNICAL INFORMATION
2.5.1 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.
2.5.1.1 SPECIFICATIONS
The following table shows the specifications of this unit.
2.5.1.2 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
26V LCD PANEL UNIT 32V LCD PANEL UNIT
Maximum dimensions ( W × H × D ) 62.6 cm ×37.3 cm ×4.8 cm 76.0 cm ×45.0 cm ×4.5 cm
Weight 4.5 kg 6.5 kg
Effective screen size Diagonal: 660 mm (H: 576 mm ×V: 324 mm) Diagonal: 800 mm (H: 697 mm ×V: 392 mm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Resolution Horizontally 1366 ×Vertically 768 ×RGB <W-XGA> 3147264 dots in total
Pixel pitch (pixel size) Horizontally: 0.4215 mm, Vertically: 0.4215 mm Horizontally: 0.51075 mm, Vertically: 0.51075 mm
Displayed colour 16777216 colours 256 colours for R G and B
Brightness 500cd/m2
Contrast ratio 1200 : 1
Response time (Tr) less than 8 ms
View angle (Horizontally) 176°
View angle (Vertically) 176°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight Cold cathode fluorescent lamp ×6 (U-TYPE) Cold cathode fluorescent lamp ×12
Power supply voltage in LCD 12 V
Power supply voltage in inverter 24 V
Panel interface system LVDS (Low Voltage Differential Signaling)

(No.YA509)1-11
2.5.2 MAIN CPU PIN FUNCTION [IC7001 : MAIN PWB]
Pin Pin name I/O Function
1 T-V LINK_OUT O Data output for T-V LINK
2POWER_G I
Not used : Low power voltage detection [NG = H]
3 PROTECTOR I Power abnormality detection [Emergent = H]
4 TCLK I Clock for JTAG interface
5 TDO O Data output for JTAG interface
6 TDI I Data input for JTAG interface
7 TMS I Control signal for JTAG interface
8 RESETQ I CPU reset [Reset = L]
9 E3_R I Audio input for EXT-3
10 E3_L I Audio input for EXT-3
11 DIN/D_R I Audio input for digital tuner/HDMI
12 DIN/D_L I Audio input for digital tuner/HDMI
13 E1_R I Audio input for EXT-1
14 E1_L I Audio input for EXT-1
15 E2_R I Audio input for EXT-2
16 E2_L I Audio input for EXT-2
17 VREFAU I Reference voltage setting
18 VSUP8.0AU I 8V power supply
19 GNDA - GND
20 SGND - GND
21 R2_OUT O Audio output for EXT-2
22 L2_OUT O Audio output for EXT-2
23 R_OUT O Audio output for EXT-1
24 L_OUT O Audio output for EXT-1
25 HEADPHONE_R O Audio output for headphone
26 HEADPHONE_L O Audio output for headphone
27 SPEAKER_R O Audio output for speaker
28 SPEAKER_L O Audio output for speaker
29 SUBWOOFER O Not used
30 VREFSIF I Reference voltage setting
31 SIF_IN+ I SIF for VHF/UHF tuner
32 SIF_IN- I SIF for VHF/UHF tuner
33 VSUP5.0 I 5V power supply
34 GNDA - GND
35 GND3.3DIG - GND
36 VSUP3.3DIG I 3.3V power supply
37 SPDIF_OUT O Not used
38 I2S_DA_IN I Not used
39 I2S_CL - Not used
40 I2S_WS - Not used
41 I2S_DEL_OUT O Not used
42 I2S_DEL_IN I Not used
43 I2S_DEL_CL - Not used
44 I2S_DEL_WS - Not used
45 VSUP3.3RAM I 3.3V power supply
46 GND3.3RAM - GND
47 VD_DV1 I V sync for HDMI
48 DE_DV1 I Data enable for HDMI
49 CLK_DV1 I Clock for HDMI
50 DV1_R7 I Pr input for HDMI
51 DV1_R6 I Pr input for HDMI
52 DV1_R5 I Pr input for HDMI
53 DV1_R4 I Pr input for HDMI
54 DV1_R3 I Pr input for HDMI
55 DV1_R2 I Pr input for HDMI
56 DV1_R1 I Pr input for HDMI
57 DV1_R0 I Pr input for HDMI
58 DV1_Y7 I Y input for HDMI
59 DV1_Y6 I Y input for HDMI
60 DV1_Y5 I Y input for HDMI
61 DV1_Y4 I Y input for HDMI
62 DV1_Y3 I Y input for HDMI
63 DV1_Y2 I Y input for HDMI
64 DV1_Y1 I Y input for HDMI
65 DV1_Y0 I Y input for HDMI
66 DV1_B7 I Pb input for HDMI
67 DV1_B6 I Pb input for HDMI
68 DV1_B5 I Pb input for HDMI
69 DV1_B4 I Pb input for HDMI
70 DV1_B3 I Pb input for HDMI
71 DV1_B2 I Pb input for HDMI
72 DV1_B1 I Pb input for HDMI
73 DV1_B0 I Pb input for HDMI
74 GND3.3DRI - GND
75 VSUP3.3DRI I 3.3V power supply
76 GND3.3COM - GND
77 VSUP3.3COM I 3.3V power supply
78 X'TALIN I 20.25MHz oscillation for CPU system clock
79 X'TALOUT O 20.25MHz oscillation for CPU system clock
80 CLKOUT O Not used
81 VSO O Not used
82 HSO O Not used
83 SCL1 O Clock for I2C bus (for HDMI)
84 SDA1 I/O Data for I2C bus (for HDMI)
85 GND3.3FL - GND
86 VSUP3.3FL I 3.3V power supply
87 AFC1 I AFT voltage for VHF/UHF tuner
88 DIN_PHOTO I For digital input protection
89 A_MU O
Speaker/headphone output muting [Muting = H]
90 PFC_POW O Not used : Power on/off control for PFC [ON = L]
91 DIN_INT I Interrupt request for HDMI
92 LCD_POW O Power on/off control for LCD drive [ON = L]
93 OSDV I Not used
94 OSDH I Not used
95 GND3.3IO1 - GND
96 VSUP3.3IO1 I 3.3V power supply
97 OSDCLK I Not used
98 OSDFSW I Not used
99 MAIN_POW O
Power on/off control for main power [ON = L]
100 IDTV_IRQ O Interrupt request for digital tuner
101 RXD I Data communication for digital tuner
102 TXD O Data communication for digital tuner
103 OSDB1 O Not used
104 OSDB0 O Not used
105 LB_POW O
Power on/off control for low bias line [ON = L]
106 REMOCON I Remote control sensor input
107 OSDG1 O Not used
108 OSDG0 O Not used
109 SDA0 I/O Data for I2C bus (for E2PROM)
110 SCL0 O Clock for I2C bus (for E2PROM)
111 OSDR1 O Not used
112 OSDR0 O Not used
113 GND3.3IO1 - GND
114 VSUP3.3IO1 I 3.3V power supply
115 DIN_HOTP O
Hotplug error detection for HDMI connector-1 [Error = L]
116 DIN_RST O Reset for HDMI [Reset = L]
117 MB_RES O Not used : Reset for MaxxBass [Reset = L]
118 PCS3 O Not used
119 POW_LED O POWER LED(green) lighting [ON = L]
120 DINHOTP2 O
Hotplug error detection for HDMI connector-2 [Error = L]
121 PCLK2 O Not used
122 PCLK1 O Not used
123 GND1.8DIG - GND
124 VSUP1.8DIG I 1.8V power supply
125 DBO1_0 O Not used
126 DBO1_1 O Not used
127 VSUP3.3LVDS I 3.3V power supply
128 LVDS_A3+ O LVDS data output for LCD panel
129 LVDS_A3- O LVDS data output for LCD panel
130 GND3.3LVDS - GND
131 LVDS_ACLK+ O LVDS clock output for LCD panel
132 LVDS_ACLK- O LVDS clock output for LCD panel
133 VSUP3.3LVDS I 3.3V power supply
134 LVDS_A2+ O LVDS data output for LCD panel
135 LVDS_A2- O LVDS data output for LCD panel
136 GND3.3LVDS - GND
137 LVDS_A1+ O LVDS data output for LCD panel
138 LVDS_A1- O LVDS data output for LCD panel
139 VSUP3.3LVDS I 3.3V power supply
140 LVDS_A0+ O LVDS data output for LCD panel
141 LVDS_A0- O LVDS data output for LCD panel
142 VSUP1.8LVDS I 1.8V power supply
143 REXT O Not used
144 GND1.8LVDS - GND
145 DGO1_8 O Not used
146 DGO1_9 O Not used
147 GND3.3LVDS - GND
148 DRO1_1 O Not used
149 LVDS_BCLK- O Not used
150 VSUP3.3LVDS I 3.3V power supply
151 DRO1_2 O Not used
152 DRO1_3 O Not used
153 GND3.3LVDS - GND
Pin Pin name I/O Function

1-12 (No.YA509)
154 DRO1_5 O Not used
155 DRO1_6 O Not used
156 VSUP3.3LVDS I 3.3V power supply
157 DRO1_8 O Not used
158 DRO1_9 O Not used
159 AGC I RF AGC voltage for VHF/UHF tuner
160 KEY1 I
Key scan for side control (POWER/CH+/CH-/MENU)
161 SLOW1 I EXT-1 SLOW detection
162 SLOW2 I EXT-2 SLOW detection
163 GND3.3DAC - GND
164 VSUP3.3DAC I 3.3V power supply
165 DC_DIM O DC dimming control for back-light inverter
166 PWM_DIM O
PWM dimming control for back-light inverter
167 DTV_SW O Audio output select for EXT-2 [Digital tuner = H]
168 SUB_MUTE O Audio output muting [Muting = L]
169 VSUP1.8FE I 1.8V power supply
170 VSUP3.3FE I 3.3V power supply
171 HD_DV1 I H sync for HDMI
172 SC_B1 I B input for EXT-1
173 SC_G1 I G input for EXT-1
174 SC_R1 I R input for EXT-1
175 SC_YS2 I Ys input for EXT-2
176 E3_PB I Pb input for EXT-3
177 E3_Y I Y input for EXT-3
178 E3_PR I Pr input for EXT-3
179 SC_B2 I B input for EXT-2
180 SC_G2 I G input for EXT-2
181 SC_R2/C I R/C input for EXT-2
182 D_BY I Pb input for digital tuner
183 SC_YS1 I Ys input for EXT-1
184 D_Y I Y input for digital tuner
185 VSUP1.8FE I 1.8V power supply
186 GNDA - GND
187 D_RY I Pr input for digital tuner
188 D_CV I Video input for digital tuner
189 E1_CV I Video input for EXT-1
190 E2_CV/Y I Video/Y input for EXT-2
191 TV_CV I Video input for VHF/UHF tuner
192 VSUP3.3VO I 3.3V power supply
193 VOUT3 O Not used
194 VOUT2 O Not used
195 V2_OUT O Video output for EXT-2
196 GND3.3IO3 - GND
197 VSUP3.3IO3 I 3.3V power supply
198 656I0 I Not used
199 656I1 I Not used
200 656I2 I Not used
201 656I3 I Not used
202 656I4 I Not used
203 656I5 I Not used
204 656I6 I Not used
205 656I7 I Not used
206 656CLKI I Not used
207 656CLKO O Not used
208 TV_LINK_IN I Data input from T-V LINK
Pin Pin name I/O Function

(No.YA509)1-13
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
•Be sure to perform the SYSTEM SETTEING, at the end of the 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.
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 6 screws [A], the 2 screws [B], the 5 screws
[C] and the 5 screws [D].
(2) Remove the REAR COVER.
3.1.2 REMOVING THE STAND ASS’Y (Fig.3-1)
(1) Remove the 4 screws [E].
(2) Remove the STAND ASS’Y in the direction of the arrow.
3.1.3 REMOVING THE POWER PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [F].
(2) Remove the POWER CORD HOLDER.
(3) Remove the POWER CORD.
(4) Remove the 5 screws [G].
(5) Remove the POWER PWB.
3.1.4 REMOVING THE MAIN PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [H] [DA8/DT8 series only].
(2) Remove the DIGITAL BASE [DA8/DT8 series only].
(3) Remove the 2 screws [I] [DA8/DT8 series only].
(4) Remove the 7 screws [J], the 2 screws [K], 1 screw [L] and 1
nut.
(5) Remove the SHIELD COVER.
(6) Remove the 6 screws [M].
(7) Remove the MAIN PWB.
CAUTION :
Make sure to perform the "SYSTEM SETTEING", when MAIN
PWB is replaced.
3.1.5 REMOVING THE DIGITAL TUNER UNIT [DA8/DT8
series only] (Fig.3-1)
• Remove the REAR COVER.
• Remove the DIGITAL BASE.
• Remove the SHIELD COVER.
(1) Remove the 5 screws [N].
(2) Remove the DIGITAL TUNER UNIT.
3.1.6 REMOVING THE SW PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 2 screws [O].
(2) Remove the SW PWB.
(3) Remove the 2 screws [P].
(4) Remove the CONTROL KNOB.
3.1.7 REMOVING THE LED PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND ASS’Y.
(1) Remove the 2 screw [Q].
(2) Remove the STAND BASE COVER.
(3) Remove the 1 screw [R] and 2 screws [S].
(4) Remove the STAND BASE.
(5) Remove the 2 screws [T] and 2 hooks [a].
(6) Remove the LED PWB.
3.1.8 REMOVING THE SPEAKER HOLDER AND SPEAKER
(Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND ASS’Y.
• Remove the STAND BASE COVER.
• Remove the STAND BASE.
(1) Remove the 4 screws [U].
(2) Remove the SPEKAER.
(3) Remove the 3 screws [V].
(4) Remove the SPEKAER HOLDER.
(5) Follow the same steps when removing the other hand
SPEAKER HOLDER and SPEAKER.
3.1.9 REMOVING THE LCD PANEL UNIT (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND ASS’Y.
• Remove the STAND BASE COVER.
• Remove the STAND BASE.
• Remove the POWER CORD HOLDER.
• Remove the SPEKAER HOLDER.
(1) Remove the 6 screws [W].
(2) Remove the 4 screws [X].
(3) Remove the MAIN BASE.
(4) Remove the LCD PANEL UNIT from the FRONT PANEL.
3.1.10 REMOVING THE CONTROL PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND ASS’Y.
• Remove the STAND BASE COVER.
• Remove the STAND BASE.
• Remove the MIAN BASE.
(1) Remove the 4 screws [Y].
(2) Remove the CONTROL PWB COVER.
(3) Remove the CONTROL PWB.
3.1.11 REMOVING THE INVERTER PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 6 screws [Z].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB.

1-14 (No.YA509)
Fig.3-1
SHIELD
COVER
MAIN BASE
STAND BASE COVER
STAND BASE
INVERTER PWB
COVER
CONTROL PWB
COVER
A
A
BD
C
D
M
G
F
W
ZY
WX
N
I
J
KL
H
Q
X
X
P
P
O
T
V
a
U
UV
V
V
U
U
RS
W
X
REAR COVER
SPEAKER
SPEAKER
SPACER
SPACER
SPEAKER HOLDER
SPEAKER HOLDER
SPACER
STAND ASS'Y
CONTROL KNOB
SW PWB
POWER CORD
HOLDER
POWER CORD
LED PWB
MAIN PWB
DIGITAL
BASE
CONTROL
PWB
INVERTER PWB
SPACER
FRONT PANEL
POWER PWB
NUT
DIGITAL
TUNER UNIT
[DA8/DT8 series]
The illustration is LT-32DA8 series

(No.YA509)1-15
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
Simbol Number of pins Mounting PWB Main content of data
IC7003 8-pin MAIN PWB Setting value of IC7001(MAIN CPU) is memorized.
SERVICE MODE SCREEN
1. ADJUST
SERVICE MENU
SERVICE MENU
1.ADJUST
1.ADJUST
2.SELF_CHECK
2.SELF_CHECK
3.I2C STOP
3.I2C STOP
Press [1] key
ADJUST
ADJUST
AUTO
AUTO
FUL
FUL
1.SC ADJ
1.SC ADJ
14
14
SC DEV:+ 0
SC DEV:+ 0
- + OK:STORE i=EXIT
- + OK:STORE i=EXIT
Setting mode Setting items Settings
1.ADJUST 1.SC ADJ. Adjust
2.R DRIVE Adjust
3.G DRIVE Adjust
4.B DRIVE Adjust
5.CUTOFF R Fixed [Do not adjust]
6.CUTOFF G Fixed [Do not adjust]
7.CUTOFF B Fixed [Do not adjust]
8.COLOUR Fixed [Do not adjust]
9.HUE Fixed [Do not adjust]
10.CONTRAST Fixed [Do not adjust]
11.BRIGHT Fixed [Do not adjust]
12.SHARP Fixed [Do not adjust]
13.DC EXTMD Fixed [Do not adjust]
14.PWM EXTMD Fixed [Do not adjust]

1-16 (No.YA509)
3.2.4 SETTINGS OF FACTORY SHIPMENT
3.2.4.1 BUTTON OPERATION 3.2.4.2 REMOTE CONTROL DIRECT OPERATION
3.2.4.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
(2) SOUND
(4) FEATURES
(5) SET UP
(6) DTV [DA8/DT8 series only]
[For UK]
[For Finland/Germany/Spain/Sweden]
*It differs according to the language that the user selected.
[For All country]
Setting item Setting position
POWER Off
CHANNEL PR1
VOLUME 10
TV/AV TV
Setting item Setting position
CHANNEL PR1
VOLUME 10
ZOOM AUTO
SUB POWER OFF
Setting item Setting position
PICTURE MODE BRIGHT
COLOUR TEMP. COOL
FEATURES
DIGITAL VNR ON
Digi Pure ON
MOVIE THEATRE OFF
COLOUR SYSTEM TV Depends on PR/CH
EXT AUTO
4:3 AUTO ASPECT PANORAMIC
Setting item Setting position
STEREO / I•II Stereo sound
BASS Centre
TREBLE Centre
BALANCE Centre
HYPER SOUND OFF
3D CINEMA SOUND
SORRUND MID
BASS BOOST MID
Setting item Setting position
SLEEP TIMER OFF
CHILD LOCK ID NO.0000, All CH off
BLUE BACK ON
FAVOURITE SETTING Blank
APPEARANCE TYPE A
Setting item Setting position
AUTO PROGRAM TV channel automatically set
EDIT/MANUAL PRESET CH only
LANGUAGE ENGLISH
DECODER (EXT-2) OFF
EXT SETTING EXT-1
ATTENUATOR OFF [DA8/DT8 series only]
HDMI SETTING
HDMI-1 Size AUTO
Audio AUTO
HDMI-2 Size AUTO
Setting item Setting position
Configuration
Audio Language English
Subtitle Language English
Favourite Mode Off
Menu Lock Disable
Setting item Setting position
Configuration
Country --- *
Menu Language --- *
Audio Language --- *
Subtitle Language --- *
Teletext Language --- *
EPG Language --- *
Enter PIN Code 0000
Favourite Mode Off
Maturity Rating Off
Setting item Setting position
Setup
Digital Audio Output PCM
Banner Duration 2sec
Receiver Upgrade Auto
Common Interface ---
Antenna Power Off

(No.YA509)1-17
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

1-18 (No.YA509)
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) This TV is adjusted by using REMOTE CONTROL UNIT.
(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 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• COLOUR DECODER adjustment
• WHITE BALANCE (HIGH LIGHT) adjustment
4.5 BASIC OPERATION OF SERVICE MODE
4.5.1 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. (Fig.1)
NOTE:
Before entering the SERVICE MODE, confirm that the setting
of VCR/TV/DVD switch is at the "TV" side. If the switches have
not been properly set, you cannot enter the SERVICE MODE.”
4.5.2 HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.
4.5.3 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 [OK] key.
4.5.4 SERVICE MODE SELECT KEY LOCATION
Setting item Settings position
PICTURE MODE STANDARD
PICTURE adjustments Centre
COLOUR TEMP. NORMAL
Fig.4-1
SERVICE MENU
SERVICE MENU
1.ADJUST
1.ADJUST
2.SELF_CHECK
2.SELF_CHECK
3.I2C STOP
3.I2C STOP
SERVICE MODE SCREEN
INFORMATION
MUTING
OK
FUNCTION
/
INFORMATION
FUNCTION
/
[DA8/DT8 series] : RM-C1508
[A80 series] : RM-C1821
VCR/TV/DVD
switch
MUTING
OK
FUNCTION
/
FUNCTION
/

(No.YA509)1-19
4.5.5 ADJUSTMENT MODE
This mode is used to adjust the VIDEO CIRCUIT.
4.5.5.1 HOW TO ENTER THE ADJUSTMENT MODE
When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE (Fig.2).
NOTE:
• When a number key other than the [1] key is pressed in the SERVICE MODE SCREEN, the other relevant screen may be
displayed.
This is not used in the adjustment procedure. Press the [MENU] key to return to the SERVICE MODE SCREEN.
4.5.5.2 DESCRIPTION OF STATUS DISPLAY
(1) SIGNAL SYSTEM
The signal displayed on the screen is displayed.
(2) ZOOM MODE
State of the ZOOM MODE is displayed.
(5) SETTING ITEM NAME
Setting item name are displayed. The setting item numbers to
be displayed are listed below.
(7) SETTING VALUE (DATA)
The SETTING VALUE is displayed.
PAL : PAL50Hz/60Hz (Composite / S-video)
: DVB-T [Only DA8/DT8 series]
: RGB 576i
SECAM : SECAM
NTSC3.58 : NTSC3.58 / RGB 480i
NTSC4.43 : NTSC4.43
480i : 480i (Component) / HDMI 480i
480p : 480p / HDMI 480p
576i : 576i (Component) / HDMI 576i
576p : 576p / HDMI 576p
1080i50 : 1080i 50Hz / HDMI 1080i 50Hz
1080i60 : 1080i 60Hz / HDMI 1080i 60Hz
750p50 : HDMI 750p 50Hz
750p60 : HDMI 750p 60Hz
FUL : FULL
PAN : PANORAMIC
16Z : 16:9 ZOOM
SUB : 16:9 ZOOM SUBTITLE
14Z : 14:9 ZOOM
REG : REGULAR
ADJUST AUTO PAL FUL
ADJUST AUTO PAL FUL
1.SC ADJ 14
1.SC ADJ 14
SC DEV:+ 0
SC DEV:+ 0
- + OK:STORE i=EXIT
- + OK:STORE i=EXIT
SIGNAL SYSTEM ZOOM MODE
SETTING VALUE (DATA)
SETTING ITEM
Setting mode Setting items Settings
1.ADJUST 1.SC ADJ. Adjust
2.R DRIVE Adjust
3.G DRIVE Adjust
4.B DRIVE Adjust
5.CUTOFF R Fixed [Do not adjust]
6.CUTOFF G Fixed [Do not adjust]
7.CUTOFF B Fixed [Do not adjust]
8.COLOUR Fixed [Do not adjust]
9.HUE Fixed [Do not adjust]
10.CONTRAST Fixed [Do not adjust]
11.BRIGHT Fixed [Do not adjust]
12.SHARP Fixed [Do not adjust]
13.DC EXTMD Fixed [Do not adjust]
14.PWM EXTMD Fixed [Do not adjust]

1-20 (No.YA509)
4.6 INITIAL SETTING VALUES IN THE SERVICE MODE
• Perform fine-tuning based on the "initial values" using the remote control when in the Service mode.
• The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved
may be different from the default values.
• Never change the values of the items( ) that are not described in ADJUSTMENT PROCEDURE or in the below table as they
are fixed values.
4.6.1 ADJUSTMENT MODE
Item name Variable range Setting value
1. SC ADJ. 0 - 1023 ---
2. R DRIVE 0 - 1023 920
3. G DRIVE 0 - 1023 920
4. B DRIVE 0 - 1023 920
5. CUTOFF R 0 - 1023 0
6. CUTOFF G 0 - 1023 0
7. CUTOFF B 0 - 1023 0
Item name Input signal Variable range Setting value
26 inch models 32 inch models
8. COLOUR Other
0 - 63
31 30
SECAM 20 20
NTSC 33 33
480i / 480p(Component/HDMI) 41 41
576i / 576p(Component/HDMI) 40 41
720p / 1080i(Component/HDMI) 38 40
9. HUE Other
0 - 63
30 31
SECAM 32 32
NTSC 28 30
480i / 480p(Component/HDMI) 32 28
576i / 576p(Component/HDMI) 31 30
720p / 1080i(Component/HDMI) 32 28
10. CONTRAST Other
0 - 63
43 43
NTSC 43 43
Component/HDMI 37 37
11. BRIGHT Other
0 - 511
266 259
NTSC 263 263
Component/HDMI 268 272
12. SHARP Other
-3 - +3
0 0
NTSC 0 0
480i / 480p(Component/HDMI) 0 0
576i / 576p(Component/HDMI) +2 +2
720p / 1080i(Component/HDMI) +3 +3