JVC PD-Z50DX4/S User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.YA229
2005/2
PDP COLOUR TELEVISION
YA22920052
PD-Z50DX4,
PD-Z50DX4/S
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
BASIC CHASSIS
FP2
TU-Z50DX4, TU-Z50DX4/S
[RECEIVER UNIT]
VM-Z50DX4, VM-Z50DX4/S
[PLASMA DISPLAY UNIT]
POWER

1-2 (No.YA229)
SPECIFICATION
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) Plasma display unit 135.0cm ×83.6cm ×11.0cm
Receiver unit 43.5cm ×7.0cm ×31.3cm
Mass Plasma display unit 51.0kg
Receiver unit 3.6kg
TV RF System B, G, I, D, K, K1, M
Colour System PAL / SECAM / NTSC 3.58 / NTSC 4.43
Stereo System A2 (B/G, D/K), NICAM (B/G, I, D/K)
Teletext System FLOF (Fastext), TOP, WST (World Standard System)
Receiving
Frequency
VHF Low
VHF High
UHF
CATV
46.25MHz - 168.25MHz
175.25MHz - 463.25MHz
471.25MHz - 863.25MHz
Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
Intermediate Frequency VIF
SIF
38.0MHz (B, G, I, D, K, L)
32.26MHz (5.74MHz: B), 32.15MHz (5.85MHz: G), 31.45MHz (6.55MHz: I)
31.75MHz (6.25MHz: D), 32.15MHz (5.85MHz: K)
Colour Sub Carrier PAL
SECAM
NTSC
4.43MHz
4.40625MHz / 4.25MHz
3.58MHz / 4.43MHz
Power Input AC110V - AC240 V, 50 Hz / 60 Hz
Power Consumption Plasma display unit
Receiver unit
Opearate: 434W, Stand by: 3.3W
Opearate: 21W, Stand by: 0.6W
Plasma Display Panel (PDP) 50V wide aspect (16:9)
Screen Size Diagonal : 127.0cm (H:110.7cm ×V : 62.2cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-XGA)
Audio Power Output 20W + 20W
Speaker Main (DD)
Tweeter
Woofer
9.5cm ×1cm, oval type ×2
2cm, round type ×2
13cm ×6.5cm, oval type ×2
Aerial Terminal 75Ωunbalanced, coaxial
Video / Audio input
[VIDEO-1/2/3/4]
Component Video
[VIDEO-1/3]
1125i / 750p
625i / 625p / 525p / 525i
S-Video
[VIDEO-1/2/4]
Video
Audio
RCA pin jack ×6
Y : 1V (p-p) (Sync signal: 0.35V(p-p), 3-value sync.), 75 Ω
Pb/Pr : ±0.35V(p-p), 75 Ω
Y : 1V (p-p), Positive (Negative sync provided), 75 Ω
Cb/Cr : 0.7V(p-p), 75 Ω
Mini-DIN 4 pin ×3
Y: 1V (p-p), Positive (Negative sync provided), 75 Ω
C: 0.286V (p-p) (Burst signal), 75 Ω
1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×3
500mV (rms), High impedance, RCA pin jack ×6
Digital Input Video
Audio
HDMI connector ×1
(Digital-input terminal is not compatible with picture signals of computer signal)
Digital: HDMI connector ×1
Anarog: 500mV(rms) (-4dBs), high impedance, RCA pin jack ×2
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 >
VGA : 640 pixels ×480 pixels (Horizontal : 31.5kHz / Vertical : 60Hz)
XGA : 1024 pixels ×768 pixels (Horizontal : 42.0kHz / Vertical : 60Hz)
Center Channel Input 500mV(rms) (-4dBs), high impedance,RCA pin jack ×1
Monitor Output Video
Audio
1V (p-p), 75Ω, RCA pin jack ×1
250mV (rms) (-10dBs), Fs-18dB low impedance, RCA pin jack ×2
Audio Output RCA pin jack ×2
500mV(rms), (-4dBs), low impedance (400Hz when modulated 100%)
Subwoofer Output More than 0 to 1000mV (rms) (+2.2dBs), low impedance (80Hz when modulated 100%), RCA pin jack ×1
AV COMPULINK 3.5mm mini jack ×1
Display Input / Output
(For system cable)
Control / Audio
Video
D-sub 26-pin connector ×2
DVI-D 24-pin connector ×2
Remote Control Unit RM-C1830 (AA/R6 / UM-3 battery ×2)

(No.YA229)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) If any repair has been made to the chassis, it is
recommended that the PDP POWER SUPPLY setting
should be checked or adjusted.
(6) The high voltage applied to the PDP must conform with that
specified in Service manual. Excessive high voltage can
cause an increase in arcing and possible component
damage, therefore operation under excessive high voltage
conditions should be kept to a minimum, or should be
prevented. If severe arcing occurs, remove the AC power
immediately and determine the cause by visual inspection
(incorrect installation, cracked or melted high voltage
harness, poor soldering, etc.). To maintain the proper
components in the circuitry including the PDP must be the
exact replacements or alternatives approved by the
manufacturer of the complete product.
(7) Do not check high voltage by drawing an arc. Use a high
voltage meter or a high voltage probe with a VTVM.
Discharge the picture tube before attempting meter
connection, by connecting a clip lead to the ground frame
and connecting the other end of the lead through a 10kΩ2W
resistor to the anode button.
(8) 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.
(9) 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 1500Ω10W
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.YA229)
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.
SPACE REQUIRED FOR INSTALLATION OF THE DISPLAY UNIT
SPACE REQUIRED FOR INSTALLATION OF THE RECEIVER UNIT
1.2.3 FALL TIP PREVENTION MEASURES
Take precautionary measures to prevent the unit from falling or
tipping to protect against emergencies such as earthquakes as
well as accidents.
Fasten the supplied hook for tip fall prevention using the screws,
also supplied, behind the display unit, and use them together
with durable cords (to be purchased separately) to secure the
unit to a robust part such as the wall surface or pillars.
200 mm
50 mm
150 mm
150 mm
50 mm
100 mm 100 mm100 mm 100 mm
POWER
PLASMADISPLAY RECEIVER
The supplied hook for tipfall prevention

(No.YA229)1-5
1.3 PRECAUTIONS REGARDING PDP
1.3.1 PRECAUTIONS DURING NOTES FOR TRANSPORTATION
When transporting the unit, pressure exerted on the internal PDP
(Plasma Display 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 prior to delivery such as
through explaining the handling instructions to transporters.
Ensure that the following requirements are met during
transportation, as the PDP of this unit is made of glass and
therefore fragile:
(1) Avoid vibrations and impacts
The unit may be broken if it is toppled sideways even when
properly packed. Ensure that the unit is carried by at least
2 persons and pay careful attention not to exert any
vibration or impact on it.
(2) Do not place equipment horizontally
Ensure that it is placed upright and not horizontally during
transportation and storage as the PDP is very vulnerable to
lateral impacts and may break easily under such
circumstances.
During transportation, ensure that the unit is loaded along
the traveling direction of travel 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 RESIDUAL IMAGE / BURN-IN ON SCREEN
Like CRTs, "burn-in" may occur when a same image is
continuously displayed over an extended period of time.
As this may also shorten the life span of the PDP. Therefore, turn
off the display when not in use, scroll the screen, make use of
screen-savers, or allow even distribution on the display by
inverting the brightness, switching to complementary colors or
inserting animated images at periodic intervals.
As burn-in is more likely to occur with high brightness and
contrast settings, try to use neutral gradations or medium tone
colors.
Burn-in does not occur in the case of animated images.
When switching to another image after continuous display of the
previous image, residual images may become prominent, as
luminance in a part of the display is higher than the other parts.
This is not a defect but is because due to the discharge surface
of the lighted portion has become being relatively activated and
its luminance higher than the unlighted parts.
1.3.3 INFRARED RAYS
Near Near-infrared rays (800nm to 1000nm) are emitted from the
front of the panel, and this may give rise to malfunctions in
infrared remote controls or communication systems placed near
it. In this case, avoid direct infrared rays (and reflected rays in
some cases) from the screen by either changing the direction of
the unit or other infrared systems or securing a longer keeping a
distance from the screen.
1.3.4 OPTICAL FILTER (PANEL FILTER)
Avoid placing the unit under direct sunlight over a prolonged
period of time. This may cause the optical filter to deteriorate in
quality and color.
Clean the filter surface by wiping it softly lightly with outing
flannels a soft and lightly fuzz cloth (such as flannel).
Do not use solvents such as benzine 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.
As the filter surface is fragile., do not scratch or hit it with hard
materials.
1.3.5 NOTES PRECAUTIONS FOR PEPLACEMENT OF
EXTERIOR PARTS
Take note of the following when replacing exterior parts (back
REAR COVER, FRONT PANEL, optical filter)
• Do not exert pressure on the front of the PDP (glass surface).
• Pay careful attention not to scratch or stain the front of the PDP
(surface) with hands.
• When replacing exterior parts, the front of the PDP should be
placed facing downward. Place a mat, etc. underneath to avoid
causing scratches to the front surface. However, never use
materials that are too soft (such as blanket cloth). If
replacement is made with the PDP surface facing downward
and in contact with the blanket, pressure may be exerted on
the PDP, thus causing damages to it.

1-6 (No.YA229)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
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.
ZOOM
This function can change the screen size according to the
picture aspect ratio.
DIGITAL VNR
This function cuts down the amount of noise in the original
picture.
SUPER DIGIPURE
This function uses the latest in digital technology to give you a
natural-looking picture.
PULL DOWN
This function displays a cinema film picture more smoothly and
naturally on the screen.
3D CINEMA SOUND
You can enjoy sounds with a widerambience.
DIGITAL INPUT
Digital-in will display when any picture signal in Digital-in is
displayed.
BBE
High definition audio adds natural, clear and extraordinary
sound quality to any program.
A.H.S.
Adds a more spacious surround sound. Music gives basic
effect and Movie for more effect.
2.2 MAIN DIFFERENCE LIST
2.3 SYSTEM SETTEING
(1) Press the [DISPLAY] key and [MUTING] key simultaneous-
ly, then enter the SERVICE MODE.
(2) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(3) Turn off the power by pressing the [POWER] key on the
remote control unit.
Item PD-Z50DX4 PD-50DX4/S
POWER CORD UK type(3pin)
EU type(2pin with Earth)
Flat type(with Earth)
UK type(3pin)
Flat type(with Earth)
DISPLAY UNIT
DISPLAY INTERFACE P.W.B LCA10360-09E (SFP-7307A) LCA10360-10E (SFP-7308A)
LINE FILTER P.W.B LCA90143-13B (SFP-9308A) LCA90143-14B (SFP-9309A)
SUB POWER P.W.B LCA10353-03D (SFP-9312A) LCA10353-04D (SFP-9313A)
RECEIVER UNIT
REGULATOR P.W.B LCA10426-13C (SFP-9306A) LCA10426-14C (SFP-9317A)
DIGITAL SIGNAL P.W.B LCA10428-41H (SFP-0D307A) LCA10428-42H (SFP-0D308A)
Be sure to carry out the following operation at the end of
the procedure.
MAIN MENU SCREEN
SELF CHECK MODE SCREEN
LOB OK FAN OK
LOB OK FAN OK
SYNC M:OK S:OK HD:NG
SYNC M:OK S:OK HD:NG
TIM OK
TIM OK
MSM OK DIGI 0000
MSM OK DIGI 0000
MEM OK AVSW OK
MEM OK AVSW OK
YC OK AIO OK
YC OK AIO OK
TUN OK GCR NG 1
TUN OK GCR NG 1
IP OK RGB OK 8
IP OK RGB OK 8
DVI OK HDMI OK
DVI OK HDMI OK
SERVICE MENU
SERVICE MENU
1.ADJUST
1.ADJUST
2.SELF_CHK
2.SELF_CHK
3.I2C STOP
3.I2C STOP

(No.YA229)1-7
2.4 TECHNICAL INFORMATION
2.4.1 PDP STRUCTURE AND CHARACTERISTIC
This unit uses the flat type panel PDP (Plasma Display Panel), instead of the conventional CRT (Cathode Ray Tube), as a display unit.
2.4.1.1 PIXEL (CELL) ARRAY
PDP is constructed by sealing the xenon, which emits neon and ultraviolet rays for discharging purpose, in between the electrodes
lay on the front glass substrate and rear glass substrate.
One pixel is composed of 3 RGB cells, with cell pitch of 0.270mm (1 pixel 0.810mm) horizontally and 0.810mm vertically.
The cell is arrayed in each RGB color as shown in Fig. 1. One pixel is formed by interlacing each RGB color cell.
One cell size is 0.270mm horizontally and 0.810mm vertically.
Fig.1
2.4.1.2 PIXEL DEFECTS
Though PDP is made by means of ultra precise technology, there are cases whereby not all pixels (cell) will function properly. In some
cases, there may be defective pixels that do not light at all or the ones that always light on.
There are 3 types of Pixel defects, [Bright Dot Defects], [Dark Dot Defects] and [Flicker Dot Defects], as defined respectively in the
following:
(1) 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.
(2) 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.
(3) 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.
B G R B G R
BGRBGR
GRBG R
GRBGR
B
B
BGRBG R
BGRBGR
GRBG R
GRBGR
B
B
No.1
Pixel
sequence
No.2
Pixel
sequence Pixel
sequence
No.1365 No.1366
0.810mm (Vertically)
Pixel
sequence
No.1
Pixel line
No.2
Pixel line
Horizontally
Vertically
Direction
0.810mm
(Horizontally) Pixel pitch
0.270mm
(Horizontally) Cell pitch
Pixel pitch (Cell pitch)
1 pixel
(1 dot)
No.767
Pixel line
No.768
Pixel line
B Cell
G Cell
R Cell

1-8 (No.YA229)
2.4.2 MAIN CPU PIN FUNCTION [IC7601 : DIGITAL SIGNAL PWB ASS'Y / RECEIVER UNIT]
Pin Pin name I/O Function Pin Pin name I/O Function
1 VHOLD1 I Data slice for main screen closed caption 51 NC O Not used
2 HFLT1 I/O LPF for main screen closed caption video input 52 NC O Not used
3 NC O Not used 53 NC O Not used
4 NC O Not used 54 NC O Not used
5 DIGR0 O R [0] for OSD 55 NC O Not used
6 TB1in I AC power for timer clock 56 NC O Not used
7 REMO I Remote control 57 NC O Not used
8 BYTE I Data bus width select [L = 16bit (fixed)] 58 NC O Not used
9 CNVss I CPU programming mode select [Normal = L] 59 NC O Not used
10 DIGG0 O G [0] for OSD 60 NC O Not used
11 DIGB0 O B [0] for OSD 61 NC O Not used
12 RESET I Reset for main CPU [Reset = L] 62 HSYNC I H. sync for OSD
13 Xout O System clock osillation (crystal) : 16MHz 63 NC O Not used
14 Vss - GND 64 VSYNC I V. sync for OSD
15 Xin I System clock osillation (crystal) : 16MHz 65 NC O Not used
16 VccI I 3.3V stand-by power supply 66 NC O Not used
17 OSC1 I Clock for OSD 67 NC O Not used
18 OSC2 O Not used : Clock for OSD 68 NC O Not used
19 INT1 I AV COMPULINK control 69 NC O Not used
20 INT0 I
Request for sub(chassis) CPU communication (serial data) 70 NC O Not used
21 OUT1 O Ys (blanking) for OSD 71 NC O Not used
22 OUT2 O YM (transparence) for OSD 72 NC O Not used
23 NC O Not used 73 NC O Not used
24 NC O Not used 74 NC O Not used
25 NC O Not used 75 NC O Not used
26 NC O Not used 76 NC O Not used
27 CTA2/RTS2 O Not used : Digital tuner control 77 NC O Not used
28 CLK2 O Not used : Digital tuner control 78 NC O Not used
29 RxD2 I Not used : Digital tuner control 79 NC O Not used
30 TxD2 O Not used : Digital tuner control 80 NC O Not used
31 SDA2 I/O Not used 81 NC O Not used
32 DIGR1 O R [1] for OSD 82 NC O Not used
33 DIGG1 O G [1] for OSD 83 NC O Not used
34 DIGB1 O B [1] for OSD 84 WAKE O Reset for sub(chassis) CPU
35 TxD0 I Data receive (serial) for external programming 85 CARD_DET I Not used : Card detection for ATSC digital tuner
36 RxD0 O Data transmission (serial) for external programming 86
POWER_SW I Not used : Power switch (mechanical) detection
37 CLK0 I Clock for external programming 87 NC I/O Data for Inter IC (serial) bus control : memory
38 RTS0 O Busy for external programming [Operation = H] 88 NC O Clock for Inter IC (serial) bus control : memory
39 P5.7 I Not used 89 DIGR2 O R [2] for OSD
40 P5.6 O Not used 90 DIGG2 O G [2] for OSD
41 HOLD I CPU programming mode select [Normal = H] 91 DIGB2 O B [2] for OSD
42 P5.4 O Not used 92 NC O Not used
43 P5.3 O Not used 93 KEY2 I
Key scan data for front control button (MENU/CH+/CH-) KEY2
44 P5.2 O Not used 94 KEY1 I Key scan data for front control button (VOL+/VOL-) KEY1
45 P5.1 O Not used 95 VHOLD2 I Data slice for sub screen closed caption
46 WR O CPU programming mode select [Normal = L] 96 HLF2 I/O LPF for sub screen closed caption video input
47 P4.7 O
Data transmission for sub(chassis) CPU communication (serial) 97 CVIN2 I Video(Y) for sub screen closed caption
48 P4.6 I
Data receive for sub(chassis) CPU communication (serial) 98 TVSETB I Test terminal [L Fixed]
49 P4.5 I Clock for sub(chassis) CPU communication (serial) 99 VCCE I 5V stand-by power supply
50 P4.4 O Not used 100 CVIN1 I Video(Y) for main screen closed caption

(No.YA229)1-9
2.4.3 SUB (CHASSIS) CPU PIN FUNCTION [IC7001 : DIGITAL SIGNAL PWB ASS'Y / RECEIVER UNIT]
Pin Pin name I/O Function Pin Pin name I/O Function
1 LB_PRO O Not used 51 BS_TXD O
Not used : Data transmission for digital tuner communication
2 P_MU O Picture muting [Muting = H] 52 BS_RXD I Not used : Data receive for digital tuner communication
3 JP_CSB O Not used (NC) 53 NC O Not used (NC)
4 A_MU O Audio muting [Muting = H] 54 VREF+ I 3.3V power supply
5 M_MU O Audio muting (for AUDIO OUT) [Muting = H] 55 PDP_TX O
Data transmission for SUB (DRIVE) CPU communication
6 PC_SEL O Not used : RGB(PC) INPUT select 56 PDP_RX I Data receive for SUB (DRIVE) CPU communication
7 ON_TIMER O POWER INDICATOR (LED) brightness [LOW = L] 57 SDA0 I/O Data for Inter IC (serial) bus : EEP-ROM (IC7002)
8 ILA0 O Not used : LCD back light lighting 58 SCL0 O Clock for Inter IC (serial) bus : EEP-ROM (IC7002)
9 ILA1 O Not used : LCD panel overshoot refresh timing 59 SDA_DVI I/O Data for Inter IC (serial) bus for panel communication
10 ILA2 O Not used 60 SCL_DVI O Clock for Inter IC (serial) bus for panel communication
11 POW_LED O POWER LED lighting [ON = H] 61 AVSS - GND
12 WORD O Not used 62 DIGII_PHOT I Photo sensor for DIGITAL-IN illegal copy protection
13 MI_CK I Clock for SUB (OSD) CPU communication 63 AGC I Not used
14 MI_TX I Data receive for SUB (OSD) CPU communication 64 EXT_YS1 I Not used
15 MI_RX O Data transmission for SUB (OSD) CPU communication 65 EXT_YS2 I Not used
16 MI_REQ O
Data request for SUB (OSD) CPU communication [Request = L] 66 VDD I 3.3V power supply
17 VDD I 3.3V power supply 67 DIGI_PRO O for DIGITAL-IN (HDMI)
18 FOSC O Not used (NC) 68 GCR_RST O Not used (NC)
19 VSS - GND 69 GR_ON O Not used (NC)
20 X1 I Not used : Low speed oscillatior 70 SYNC_SEL O Not used : Sync select for digital tuner
21 X0 O Not used : Low speed oscillatior 71 NC O Not used (NC)
22 VDD I 3.3V power supply 72 NC O Not used (NC)
23 OSC1 I System clock osillation (crystal) : 16MHz 73 SBD5 I/O
Not used : Data for writing on board (connect CN01P : for Frash ROM type)
24 OSC0 O System clock osillation (crystal) : 16MHz 74 SBT5 I Not used : Clock for writing on board (connect CN01P : for Frash ROM type)
25 MODE I Single chip mode 75 NMI I 3.3V power supply
26 BS1.5CTL O Not used : Digital tuner power / reset control 76 COMP I AV COMPULINK lll control
27 A92RES O
Reset for IC1001(3D YC SEP / COLOR DEMODULAT) [Reset = H] 77 REMO I Remote control
28 BS_RST O Not used: Reset for Digital tuner power / reset control 78 VSYNC I V. sync pulse
29 LIP_RST O Not used: Reset for Sound delay (Lip sync) 79 WAKE I Reset for sub(chassis) CPU
30 SOFT_OFF O Not used 80
POWERGOOD I Power error detection [NG = H]
31 VMUTE I No use : Picture muting request from digital tuner 81 NC O Not used (NC)
32 VOUTENB O No use : Video cutoff for digital tuner 82 RST I Reset for MAIN CPU [Reset = L]
33 MDR_CON I System cable connection monitor for PDP 83 VDD I 3.3V power supply
34 AVDD I 3.3V power supply 84 SCL3A O Clock for Inter IC (serial) bus control
35 BS_POW O Not used : Digital tuner power control 85 SDA3A I/O Data for Inter IC (serial) bus control
36
DsyncSW2 O Sync select for DIGITAL-IN [Cotrolled with 99-pin] 86 SCL3B O Clock for Inter IC (serial) bus control
37 LB_POW O Not used : Power control for low bias line 87 SDA3B I/O Data for Inter IC (serial) bus control
38 NC O Not used (NC) 88
DIGI_SYNCSEL O Not used
39 HOTPLUG I Video communiation monitor for receiver unit (PDP) 89 DIGI_LRSW O For DIGITAL-IN (HDMI)
40 MECA_SW I Mechanical monitor for POWER switch [Push = L] 90 DIGI_INT I Reset for HDMI process [Reset = L ]
41 MAIN_POW O Main power control [ON = L] 91 DVI_RST O Reset for DVI format conversion
42 MSP_RST O AUDIO OUT output mode select [VARIABLE = L] 92 VSS - GND
43 VREF- I Not used 93 SCL5055 O
Clock for Inter IC (serial) bus : JCC5055 (DIST process)
44 AFT2 I Not used : AFT voltage for sub tuner 94 VFORMATSEL O Not used : Digital tuner clock control
45 AFT1 I AFT voltage for VHF/UHF tuner 95 SDA5055 I/O Data for Inter IC (serial) bus : JCC5055 (DIST process)
46 KEY2 I Key scan data for front switch (MENU/CH+/CH-) 96
OSD_MODE_SEL O Not used : OSD mode select
47 KEY1 I Key scan data for front switch (VOL+/VOL-) 97 NC O Not used (NC)
48 NC O Not used (NC) 98 15K/OTH O Main video select [Fixed H]
49 NC O Not used (NC) 99 DsyncSW1 O Sync select for DIGITAL-IN [Cotrolled with 36-pin]
50 AC_IN I AC power pulse for timer clock 100 57 BUSY I Busy monitor for JCC5057 (New DIST process)

1-10 (No.YA229)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE (DISPLAY UNIT)
NOTE:
• When exchanging parts etc. with the front side (PDP side) fancing down, place a protection sheet under the DISPALY UNIT to
prevent scratches on the front side.
• It is advisable to take notes of the connecting locations (connector numbers) of the removed connectors.
3.1.1 REMOVING THE REAR COVER (Fig.1)
(1) Remove the power cord and the system cable.
(2) Remove the 11 screws [A] and the 14 screws [B], then
remove the REAR COVER.
3.1.2 REMOVING THE BACK COVER AND SPEAKER
HOLDER (Fig.1)
(1) Remove the 8 screws [C], then remove the BACK COVER.
(2) Remove the SPEAKER HOLDER.
3.1.3 REMOVING THE CHASSIS SHIELD BRACKET NAD
THE TERMINAL COVER (Fig.1)
• Remove the REAR COVER.
(1) Remove the 6 screws [D], then remove the CHASSIS
SHIELD BRACKET.
(2) Remove the 2 screws [E] and the 5 screws [F], then
remove the TERMINAL COVER.
3.1.4 REMOVING THE LINE FILTER PWB (Fig.1)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
(1) Remove the 2 claws [G], then remove the LINE FILTER
INSULATOR.
(2) Disconnect the connector [CN8001] from the MAIN
POWER UNIT.
(3) Remove the 2 screws [H] and the 1 screw [I], then remove
the LINE FILTER PWB.
3.1.5 REMOVING THE AUDIO PWB (Fig.1.)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
(1) Disconnect the connector [CN60SL] / [CN60CB] /
[CN60SR] from the AUDIO PWB .
(2) Disconnect the connector [CN9001] from the SUB POWER
PWB.
(3) Disconnect the connector [CN00A] / [CN00C] / [CN00D]
from the DISPLAY INTERFACE PWB.
(4) Remove the 4 screws [J], then remove the AUDIO PWB.
3.1.6 REMOVING THE DISPLAY INTERFACE PWB (Fig.1)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
(1) Disconnect the connector [CN00A] / [CN00C] / [CN00D] /
[CN00E] / [CN00G] / [CN00Q] / [CN00T] / [CN00X] /
[CN00V] / [CN0FL] / [CN0FR] / [CN601] / [CNAH1] from the
DISPLAY INTERFACE PWB .
(2) Remove the 3 screws [K], the 2 screws [L] and the 2 screws
[M] , then remove the DISPLAY INTERFACE PWB.
3.1.7 REMOVING THE CHASSIS BASE (Fig.1)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
• Remove the LINE FILTER PWB.
• Remove the AUDIO PWB.
• Remove the DISPLAY INTERFACE PWB.
(1) Remove the 2 screws [N], then remove the CHASSIS
BASE.

(No.YA229)1-11
Fig.1
A
C
B
A
C
H
G
G
J
K
D
E
F
F
E
F
F
I
M
L
N
N
REAR COVER
LINE FILTER
INSULATOR
LINE FILTER
PWB
BACK COVER
TERMINAL
COVER
DISPLAY
INTERFACE PWB
AUDIO PWB
BACK COVER
CHASSIS SHIELD
BRACKET
CHASSIS BASE
SPEAKER HOLDER
SPEAKER HOLDER

1-12 (No.YA229)
3.1.8 REMOVING THE TEMP. SENSOR PWB (Fig.2)
• Remove the REAR COVER.
(1) Disconnect the connector [CN800V] from the TEMP.
SENSOR PWB PWB .
(2) Remove the 1 screw [O], then remove the TEMP.
SENSOR PWB.
3.1.9 REMOVING THE MAIN POWER UNIT (Fig.2)
• Remove the REAR COVER.
(1) Disconnect the connector [CN805] / [CN806] / [CN8001] /
[CN8009] / [CN8011] / [CN9001] from the MAIN POWER
UNIT .
(2) Remove the 8 screws [P], then remove the MAIN POWER
UNIT.
3.1.10 REMOVING THE SUB POWER PWB (Fig.2)
• Remove the REAR COVER.
(1) Disconnect the connector [CN9001] / [CN9002] / [CN9005]
from the SUB POWER PWB .
(2) Remove the 4 screws [Q], then remove the SUB POWER
PWB.
3.1.11 REMOVING THE COOLING FAN (Fig.2)
• Remove the REAR COVER.
(1) Disconnect the connector [CN0FL] / [CN0FR] from the
DISPLAY INTERFACE PWB .
(2) Remove the 4 screws [R], then remove the FAN
BRACKET by lifting upward.
(3) Remove the 4 screws [S], then remove the COOLING FAN
by pulling in hte arrowed direction.
3.1.12 REMOVING THE POWER CHASSIS BASE (Fig.2)
• Remove the REAR COVER.
• Remove the MAIN POWER UNIT.
• Remove the SUB POWER PWB.
• Remove the COOLING FAN.
(1) Remove the 5 screws [T], then remove the POWER
CHASSIS BASE.
3.1.13 REMOVING THE DISPLAY SWITCH PWB (Fig.2)
• Remove the BACK COVER.
• Remove the SPEAKER HOLDER.
(1) Remove the 2 screws [U], then remove the CONTROL
KNOB.
(2) Remove the 3 screws [V], then remove the DISPLAY
SWITCH PWB.
(3) Disconnect the connector [CN000T] from the DISPLAY
SWITCH PWB .
3.1.14 REMOVING THE DISPLAY LED PWB (Fig.2)
• Remove the BACK COVER.
• Remove the SPEAKER HOLDER.
• Remove the DISPLAY SWITCH PWB.
(1) Remove the 2 screws [W], then remove the DISPLAY LED
PWB.
(2) Disconnect the connector [CN000X] from the DISPLAY
LED PWB .
3.1.15 REMOVING THE DD SPEAKER (Fig.2)
• Remove the REAR COVER.
• Remove the BACK COVER.
• Remove the SPEAKER HOLDER.
(1) Disconnect the connector [CN60SR] / [CN60SL] from the
AUDIO PWB .
(2) Remove the 4 screws [X], then remove the DD SPEAKER.
3.1.16 REMOVING THE WOOFER SPEAKER (Fig.2)
• Remove the REAR COVER.
(1) Disconnect the connector [CN60CB] from the AUDIO
PWB.
(2) Remove the 6 screws [Y], then remove the WOOFER
SPEAKER UNIT.
(3) Remove the 14 screws [Z], then remove the WOOFER
BACK COVER.
(4) Remove the 8 screws [A'], then remove the WOOFER
SPEAKER.
3.1.17 REMOVING THE PDP (PANEL) UNIT (Fig.2)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
• Remove the CHASSIS BASE (with each PWB affixed on the
CHASSIS BASE).
• Remove the POWER CHASSIS BASE (with each PWB affixed
on the CHASSIS BASE).
• Remove the TEMP. SENSOR.
(1) Remove the 8 screws [B'] and the 8 screws [C'], then
remove the BACK BRACKET.
(2) Remove the 4 screws [D'] then Lift the PDP straight
upward and remove it with extra attention no to impose any
shock to the PDP.
CAUTION:
• More than two people are required to remove the PDP unit.
• The gas pouring port is covered with the protection material.
Durring the operation, be careful not to damage the gas
pouring port.
• Do not touch the front side (glass) of the PDP with your
fingers.

(No.YA229)1-13
Fig.2
MAIN POWER UNIT
SUB POWER PWB
POWER CHASSIS PWB
BACK BRACKET
DD SPEAKER
DD SPEAKER
TEMP. SENSOR PWB
FAN BRACKET
COOLING FAN
PDP (PANEL) UNIT
DISPLAY
LED PWB
WOOFER SPEAKER HOLDER
CONTROL KNOB
DISPLAY SWITCH PWB
WOOFER
SPEAKER
WOOFER
SPEAKER
WOOFER
BACK
COVER
X
X
V
U
D' W
B' C'
C'
B'
C'
C'
B'
O
B' D'
D'
D'
T
P
Q
R
S
S
T
A'
Z
Z
Y
A'
GAS insertion
hole

1-14 (No.YA229)
3.1.18 REMOVING THE PWB IN PDP UNIT
3.1.18.1 REMOVING THE X LEFT TOP PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connector [P4] / [P5] / [P501] / [P502] /
[P503] / [P504] from the X-LEFT TOP PWB .
(2) Remove the 2 screws [a] and the 1 screw [b], then remove
the X LEFT TOP PWB.
3.1.18.2 REMOVING THE X CENTER TOP PWB (Fig.3)
• Remove the PDP UNIT.
(1)
Disconnect the connector [ P5 ] / [ P6 ] / [ P10 ] / [ P100 ] / [ P505 ]
/ [
P506 ] / [ P507 ] / [ P508 ] from the X-CENTER TOP PWB .
(2) Remove the 1 screw [b] and the 2 screws [c], then remove
the X CENTER TOP PWB.
3.1.18.3 REMOVING THE X RIGHT TOP PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connectors [P1] / [P4] / [P5] / [P6] / [P509] /
[P510] / [P511] from the X-RIGHT TOP PWB .
(2)
Remove the 2 screws [d] , then remove the X RIGHT TOP PWB .
3.1.18.4 REMOVING THE Z SUS PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connectors [P1] / [P2] / [P3] / [P5] / [P6] /
[P9] / [P12] from the Z SUS PWB .
(2) Remove the 9 screws [e], then remove the Z SUS PWB.
3.1.18.5 REMOVING THE LVDS CONTROL PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connectors [P3] / [P6] / [P101] / [P102] /
[P103] / [P104] / [P105] / [P106] / [P200] / [P201] / [P300]
from the LVDS CONTROL PWB .
(2) Remove the 4 screws [f], then remove the LVDS
CONTROL PWB.
3.1.18.6 REMOVING THE Y SUS PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connectors [1] / [P2] / [P3] / [P4] / [P5] / [P7]
/ [P9] / [P11] from the Y SUS PWB .
(2) Remove the 8 screws [g], then remove the Y SUS PWB.
3.1.18.7 REMOVING THE Y DRIVE UPPER PWB (Fig.3)
• Remove the PDP UNIT.
(1)
Disconnect the connectors [ P2 ] / [ P10 ] from the Y-SUB PWB .
(2) Disconnect the connector [P6] / [P7] / [P8] / [P9] / [P10] /
[P12] / [P13] from the Y-DRIVE UPPER PWB .
(3) Remove the 2 screws [h], then remove the Y DRIVE
UPPER PWB.
3.1.18.8 REMOVING THE Y DRIVE LOWER PWB (Fig.3)
• Remove the PDP UNIT.
(1)
Disconnect the connector [ P2 ] / [ P10 ] from the Y-SUB PWB .
(2) Disconnect the connector [P1] / [P2] / [P3] / [P4] / [P5] /
[P11] from the Y-DRIVE LOWER PWB .
(3) Remove the 2 screws [i], then remove the Y DRIVE
LOWER PWB.
3.1.18.9 REMOVING THE X RIGHT BOTTOM PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connector [P2] / [P3] /[P7] / [P401] / [P402]
/ [P403] from the X-RIGHT BOTTOM PWB .
(2) Remove the 2 screws [j], then remove the X RIGHT
BOTTOM PWB.
3.1.18.10 REMOVING THE X CENTER BOTTOM PWB (Fig.3)
• Remove the PDP UNIT.
(1)
Disconnect the connectors [ P1 ] / [ P4 ] / [ P7 ] / [ P405 ] / [ P406 ]
/ [
P407 ] / [ P408 ] / [ P425 ] from the X-CENTER BOTTOM
PWB.
(2) Remove the 2 screws [k] and the 1screw [k], then remove
the X CENTER BOTTOM PWB.
3.1.18.11 REMOVING THE X LEFT BOTTOM PWB (Fig.3)
• Remove the PDP UNIT.
(1) Disconnect the connectors [P1] / [P2] / [P401] / [P402] /
[P403] / [P404] from the X LEFT BOTTOM PWB .
(2) Remove the 1 screw [m] and the 2 screws [n], then remove
the X-LEFT BOTTOM PWB.
Fig.3
a
h
j
k
m
n
i
c
g
f
c
d e
e
Y DRIVER LOWER PWB
X CENTER TOP PWB
X RIGHT TOP PWB
Z-SUS PWB
X LEFT TOP PWB
Y DRIVER UPPER PWB
LVDS CONTROL PWB
X CENTER BOTTOM PWB
X RIGHT BOTTOM PWB
Y SUS PWB
X LEFT BOTTOM PWB
g

(No.YA229)1-15
3.1.19 REMOVING THE FRONT FILTER (Fig.4)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
• Remove the CHASSIS BASE (with each PWB affixed on the
CHASSIS BASE).
• Remove the POWER CHASSIS BASE (with each PWB affixed
on the CHASSIS BASE).
• Remove the TEMP. SENSOR.
• Remove the PDP UNIT.
(1) Remove the 12 screws [u], then remove the FILTER
BRACKET.
(2) Remove the FRONT FILTER with enough care not to
damage it.
3.1.20 REMOVING THE TOP FRAME BRACKET, BOTTOM
FRAME BRACKET AND SIDE FRAME BRACKET (Fig.4)
• Remove the REAR COVER.
• Remove the CHASSIS SHIELD BRACKET.
• Remove the TERMINAL COVER.
• Remove the CHASSIS BASE (with each PWB affixed on the
CHASSIS BASE).
• Remove the POWER CHASSIS BASE (with each PWB affixed
on the CHASSIS BASE).
• Remove the TEMP. SENSOR.
• Remove the PDP UNIT.
• Remove the FRONT FILTER.
(1)
Remove the 6 screws [v] , then remove the FRONT PANEL.
(2) Remove the 8 screws [w], then remove the SPACER.
(3) Remove the 4 screws [x], then remove the TOP FRAME
BRACKET, BOTTOM FRAME BRACKET and SIDE
FRAME BRACKET.
Fig.4
SPACER
SIDE FRAME
SIDE FRAME
TOP FRAME
BOTTOM FRAME
FILTER BRACKET
FILTER BRACKET
FRONT FILTER
FRONT PANEL
u
x
w
u
v
v
w
w
v
v
w
x

1-16 (No.YA229)
3.2 DISASSEMBLY PROCEDURE (RECEIVER UNIT)
CAUTION AT DISASSEMBLY:
•Be sure to perform the SYSTEM SETTING on the page 1-6, 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.
• 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.
3.2.1 REMOVING THE TOP COVER
(1) Remove the 9 screws [A] then remove the TOP COVER.
3.2.2 REMOVING THE FRONT PANEL
• Remove the TOP COVER.
(1) Remove the 3 screws [B] and the 1 screw [C].
(2) Remove the 3 claws [D] and the 2 claws [E].
(3) Remove the FRONT PANEL toward you.
3.2.3 REMOVING THE FRONT CONTROL PWB
• Remove the TOP COVER.
• Remove the FRONT PANEL.
(1) Remove the [CN00F] connector on the ANALOG SIGNAL
PWB.
(2) Remove the 4 screws [F], then remove the FRONT
CONTROL PWB.
3.2.4 REMOVING THE REAR COVER
• Remove the TOP COVER.
(1) Remove the 10 screws [G], the 2 screws [K], the 2 screws
[L] , the 2 screws [M] and 1 screw [N].
(2) Remove the REAR COVER toward you.
3.2.5 REMOVING THE RECEIVER PWB
• Remove the TOP COVER.
• Remove the REAR COVER.
(1) Remove the [CN00A] / [CN00T] connectors on the
RECEIVER PWB.
(2) Remove the RECEIVER PWB.
3.2.6 REMOVING THE REAR JACK PWB
• Remove the TOP COVER.
• Remove the REAR COVER.
(1) Remove the [CNJ0J1] / [CNJ0J2] connectors on the
ANLOG SIGNAL PWB.
(2) Remove the 2 screws [S], then remove the REAR JACK
PWB.
3.2.7 REMOVING THE DIGITAL SIGNAL PWB
• Remove the TOP COVER.
• Remove the REAR COVER.
(1) Remove the [CN001] / [CN002] connectors on the ANLOG
SIGNAL PWB.
(2) Remove the [CN003] connector on the REGULATOR
PWB.
(3) Remove the 4 screws [T], then remove the TUNER
HOLDER.
(4) Remove the 4 screws [U], then remove the DIGITAL
SIGNAL PWB.
CAUTION:
Make sure to perform the "SYSTEM SETTING" on page 1-6,
when DIGITAL SIGNAL PWB is replaced.
3.2.8 REMOVING THE REGULATOR PWB
• Remove the TOP COVER.
• Remove the FRONT PANEL.
(1) Remove the [CN00D] connector on the ANLOG SIGNAL
PWB.
(2) Remove the [CN003] and [CN00B] connector on the
REGULATOR PWB.
(3) Remove the 4 screws [V], then remove the REGULATOR
PWB.
3.2.9 REMOVING THE SYSTEM POWER PWB
• Remove the TOP COVER.
(1) Remove the [CN00G] / [CN00K] connector on the ANLOG
SIGNAL PWB.
(2) Remove the [CN00B] connector on the REGULATOR
PWB.
(3) Remove the [CN00Q] / [CN0PW] connector on the
SYSTEM POWER PWB.
(4) Remove the 7 screws [W], then remove the SYSTEM
POWER PWB.
3.2.10 REMOVING THE ANLOG SYGNAL PWB
• Remove the TOP COVER.
• Remove the REAR COVER.
• Remove the RECEIVER PWB.
(1) Remove the [CN001] / [CN002] / [CN00D] / [CN00F] /
[CN00G] / [CN00K] / [CNJ0J1] / [CNJ0J2] connector on the
ANLOG SIGNAL PWB.
(2) Remove the 2 screws [X], then remove the ANLOG
SYGNAL PWB.

(No.YA229)1-17
Fig.9
RECEIVER PWB
a
c
d
a
b
c
d
f
b
f
A
A
A
T
U
V
XY
Y
B
C
ED
D
E
F
D
Y
G
G
L
N
M
K
M
S
TOP COVER
DIGITAL HOLDER
ANALOG SIGNAL
PWB
SYSTEM POWER PWB
REGULATOR PWB
REAR JACK PWB
REAR COVER
FRONT CONTROL PWB
FRONT PANEL
DIGITAL SIGNAL PWB

1-18 (No.YA229)
3.3 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.
3.3.1 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.1). Refer to the SERVICE ADJUSTMENT for setting.
3.3.2 SERVICE MODE SETTING
SERVICE MODE SCREEN
Fig.1
SETTING ITEM
MAIN MENU SCREEN
ADJUSTMENT MODE SCREEN
S001 PREPARE 0
S001 PREPARE 0
PAL50 FULL STD M
PAL50 FULL STD M
1.ADJUST
1.ADJUST
2.SELF_CHK
2.SELF_CHK
3.I2C STOP
3.I2C STOP
SERVICE MENU
SERVICE MENU
Setting items Settings Item No.
Video system setting Adjust S001 - S039
Audio system setting Fixed T001 - T010
Panel control system setting Fixed P001 - P010
Drive system setting Fixed D001 - D187
Main CPU system setting Fixed Z001 - Z010

(No.YA229)1-19
3.3.3 SETTINGS OF FACTORY SHIPMENT
3.3.3.1 BUTTON OPERATION 3.3.3.2 REMOTE CONTROL DIRECT OPERATION
3.3.3.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
(2) SOUND
(4) FEATURES
(5) SET UP
Setting item Setting position
POWER Off
CHANNEL PR1
VOLUME 10
TV/AV TV
Setting item Setting position
CHANNEL PR1
VOLUME 10
ZOOM PANORAMIC
CINEMA OFF
Setting item Setting position
PICTURE MODE STANDARD
WHITE BALANCE MID
FEATURES
DIGITAL VNR AUTO (HIGH)
Super DigiPure AUTO
PULL DOWN AUTO
COLOUR MANAGEMENT ON
PICTURE MANAGEMENT ON
COLOUR SYSTEM MAIN Depends on PR/CH
SUB AUTO
4:3 AUTO ASPECT PANORAMIC
Setting item Setting position
STEREO / I•II Stereo sound
BASS Centre
TREBLE Centre
BALANCE Centre
CINEMA SURROUND OFF
A.H.B. ON
BBE ON
SPEAKER TV
Setting item Setting position
SLEEP TIMER OFF
APPEARANCE TYPE D
BLUE BACK ON
CHILD LOCK ID NO.0000, All CH off
AUTO SHUTOFF OFF
FAVOURITE SETTING RESET
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1-20 (No.YA229)
3.4 REPLACEMENT OF CHIP COMPONENT
3.4.1 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.
3.4.2 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.
3.4.3 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