JVC HD56FH96 - 56" Rear Projection TV User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.YA337
2005/12
D-ILA PROJECTION TELEVISION
YA337200512
HD-56FH96,
HD-61FH96,
HD-70FH96
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
BASIC CHASSIS
RA
[HD-70FH96]

1-2 (No.YA337)
SPECIFICATION
Design & specifications are subject to change without notice.
Items Contents
HD-56FH96 HD-61FH96 HD-70FH96
Dimensions ( W ×H ×D ) 131.8 cm ×96.7 cm ×43.4 cm
(52" ×38-1/8" ×17-1/8")
145.6 cm ×104.3 cm ×46.7 cm
(57-3/8" ×41-1/8" ×18-3/8")
162.6 cm ×116.8 cm ×51.9 cm
(64-1/8" ×46" ×20-1/2")
Mass 43 kg (95 lbs) 47 kg (104 lbs) 72 kg (159 lbs)
TV RF System (Analog
/ Digital)
Analog
Digital
CCIR (M)
ATSC terrestrial / Digital cable
Color System (Analog) NTSC
Stereo System (Analog) BTSC (Multi Channel Sound)
Teletext System (Analog) Closed caption (T1-T4 / CC1-CC4)
TV Receiving Channels
and Frequency
(Analog)
VHF Low
VHF High
UHF
CATV
02ch - 06ch : 54MHz - 88MHz
07ch - 13ch : 174MHz - 216MHz
14ch - 69ch : 470MHz - 806MHz
54MHz - 804MHz
Low Band : 02 - 06
High Band : 07 - 13
Mid Band : 14 - 22
Super Band : 23 - 36
Hyper Band : 37 - 64
Ultra Band : 65 - 94, 100 - 135
Sub Mid Band : 01, 96 - 99
TV / CATV Total Channel 191 Channels
Intermediate Frequen-
cy (Analog)
Video IF
Sound IF
45.75 MHz
41.25 MHz (4.5MHz)
Color Sub Carrier Frequency (Analog) 3.58 MHz
Power Input AC120V, 60Hz
Power Consumption 215W 220W
Projection Source 110W High-pressure mercury lamp
Projection Device D-ILA device (Reflection active matrix type LCD) x 3(R / G /B)
Resolution Total=H:1952 ×V:1088 [ Effective =H:1920 ×V:1080 ]
Screen Transparent screen (unitized fresnel lens / lenticular lens), aspect ratio 16:9
Screen Size
56" (142cm) Measured diagonally
H:124 cm
× V:69.7cm
61" (155cm) Measured diagonally
H:135 cm × V:76.0cm
70" (178cm) Measured diagonally
H:155.5 cm × V:87.2cm
Audio Power Output 10W + 10W
Speaker 10cm round type ×2 (Oblique corn)
Antenna Terminal (VHF/UHF, ATSC / DIGITAL CABLE IN) F-type connector, 75Ωunbalanced, coaxial ×2
Video / Audio Input
[INPUT-1/2/3/4]
Component Video
[INPUT-1/2]
1125i / 750p
525p / 525i
S-Video
[INPUT-1/3/4]
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
Pb/Pr : 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 ×4
500mV (rms), high impedance, RCA pin jack ×8
Digital Input Video
Audio
HDMI 2-row 19pin connector ×2
(Digital-input terminal is not compatible with picture signals of personal computer)
Digital: HDMI 2-row 19pin connector ×21
Anarog: 500mV(rms) (-4dBs), high impedance, RCA pin jack ×2
PC (RGB) Input D-sub 3-row 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 : 48.4kHz / Vertical : 60Hz)
Center Channel Input 500mV(rms) (-4dBs), high impedance, RCA pin jack ×1
Monitor / Recording
Output
S-Video
Video
Audio
Mini-DIN 4pin ×1
Y: 1V (p-p), 75Ω
C: 0.286V(p-p) (burst signal), 75Ω
1V (p-p), 75Ω, RCA pin jack ×1
250mV(rms) (-10dBs), Fs-18dB low impedance, RCA pin jack ×2
Audio Output
Variable
Fix
RCA pin jack ×2
More than 0 to 1000mV (rms) (+2.2dBs)
500mV(rms) (-4dBs), low impedance (1000Hz when modulated 100%)
iLink Input/Output TS In/Out (4-pin, S400) ×2, IEEE1394 compliant DTCP digital copy protection compatible
Digital Audio Optical Output Digital SPDIF ×1
AV COMPULINK lll 3.5mm mini jack ×1
RS-232C D-sub 2-row 9 pin [External control for TV set]
Remote Control Unit RM-C14G (AA/R6 / UM-3 battery ×2)

(No.YA337)1-3
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS
(1) The design of this product contains special hardware,
many circuits and components specially for safety
purposes. For continued protection, no changes should be
made to the original design unless authorized in writing by
the manufacturer. Replacement parts must be identical to
those used in the original circuits. Service should be
performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or
property damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These
characteristics are often not evident from visual inspection
nor can the protection afforded by them necessarily be
obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in
the parts list of Service manual. Electrical components
having such features are identified by shading on the
schematics and by ( ) on the parts list in Service
manual. The use of a substitute replacement which does
not have the same safety characteristics as the
recommended replacement part shown in the parts list of
Service manual may cause shock, fire, or other hazards.
(4) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : ( ) side
GND, the ISOLATED (NEUTRAL) : ( ) side GND and
EARTH : ( ) side GND.
Don't short between the LIVE side GND and ISOLATED
(NEUTRAL) side GND or EARTH side GND and never
measure the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.
(5) When service is required, observe the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those components that indicate evidence of
overheating should be replaced. Always use the
manufacturer's replacement components.
(6) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an
isolation check on the exposed metal parts of the cabinet
(antenna terminals, video/audio input and output terminals,
Control knobs, metal cabinet, screw heads, earphone jack,
control shafts, etc.) to be sure the product is safe to operate
without danger of electrical shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use
an AC voltmeter having 1000Ωper volt or more
sensitivity in the following manner. Connect a 1500Ω
10W resistor paralleled by a 0.15µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part,
particularly any exposed metal part having a return path
to the chassis, and measure the AC voltage across the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1500 10W
0.15 F AC-TYPE
GOOD EARTH GROUND

1-4 (No.YA337)
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 predetermined
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.
Do not put foreign objects near the ventilation holes as this
can result in fire or electrical hazards.
Do not block the ventilation holes as this may cause the
internal temperature to rise and possibly result fire.
1.2.2 INSTALLATION REQUIREMENTS
Ensure that the minimal distance is maintained, as specified
fingure, between the unit with and the surrounding walls, as well
as the floor etc.
Install the unit on stable flooring.
Take precautionary measures to prevent the unit from tipping in
order to protect against accidents and earthquakes.
CAUTION FOR INSTALLATION
• Do not tilt the TV towards the left or right, or toward the back.
• Install the TV in a corner on the floor so as to keep cords out
of the way.
• The TV will generate a slight amount of heat during
operation. Ensure that sufficient space is available around
the TV to allow satisfactory cooling.
1.3 LAMP UNIT HANDLING CAUTION
1.3.1 PRECAUTION FOR LAMP UNIT
The lamp emits high intensity white, ultraviolet and infrared
light. Do not look directly at the light during service.
Also, do not touch the lamp directly as it presents a burn
hazard.
Handle with extra care. This lamp emits high heat and
contains high-pressure during use.
Do not give any impact as this may cause the broken lamp.
1.3.2 HOW TO CONFIRM LAMP OPERATING TIME
• MAXIMUM COUNT TIME= 65535 hours
(1) Set to "0 minutes" using the [SLEEP TIMER] key.
(2) Press the [VIDEO STATUS] key and [DISPLAY] key
simultaneously, then enter the SERVICE MODE.
(3) When the Main Menu is displayed, press [2] key to enter
the SELF CHECK MODE.
(4) The use time of a lamp is displayed on middle of the screen
by the hexadecimal number of 4 figures.
Intake hole Exhaust hole
*Diagram differs from actual appearance.
200mm 200mm
150mm
50mm
150mm
*Diagram differs from actual appearance.
LAMP UNIT : TS-CL110UAA
Lamp operation time
SERVICE MENU SCREEN
SELF CHECK MODE SCREEN (Page 1)
SERVICE MENU
SERVICE MENU
1. ADJUST
1. ADJUST
2. SELF CHECK
2. SELF CHECK
3. I2C STOP
3. I2C STOP
LOB 0 FAN 0
LOB 0 FAN 0
AUD 0
AUD 0
ANA 9 DIG 9
ANA 9 DIG 9
0000 0
0000 0
0
0

(No.YA337)1-5
1.3.3 LAMP UNIT REPLACEMENT
(1) The lamp replacement message will appear when need to
change the lamp. After replace the lamp, need to reset the
timer which is built into TV.
(2) Life of the lamp unit is about 6000 hours over. Lamp use
time can be check at the lamp message MENU.
(3) If Fig.1 message appears when turn the TV on, need to
replace the lamp.
(4) Use the lamp timer reset only after replacing the lamp.
NOTE:
• This message will appear every time turn on the TV, when
the lamp needs to be replaced. Press the [OK] key to make
the message disappear, or replace the lamp.
Fig.1
1.3.4 HOW TO REPLACE THE LAMP UNIT
• Refer to the "USERS GUIDE" for a detailed operating
description.
(1) Turn off the TV power.
(2) After the LAMP LED light has stopped blinking, disconnect
the power cord from the AC outlet.
(3) Loosen 1 screw then take out the lamp cover below the left
side of the TV.
(4) Loosen 2 screws then take out the lamp unit.
(5) Install the new lamp unit.
(6) Re-install the lamp cover.
NOTE:
• After installing the new lamp unit, do not forget to reset the
lamp timer.
1.3.5 HOW TO RESET THE LAMP TIMER
• Refer to the "USERS GUIDE" for a detailed operating
description.
(1) Press the [MENU] key to select CLOCK / TIMERS.
(2) Select the <LAMP TIMER RESET> with []/ []keys.
(3) Enter the <LAMP TIMER RESET> mode the message will
appears.
(4) Press the [OK] key while the above message appears on
the screen.
(5) Turn off the power, then turn on the power.
(6) The lamp timer has now been reset, as before the HOW TO
CONFIRM LAMP OPERATING TIME.
1.3.6 PRECAUTION FOR REPLACEMENT
• Do not replace the LAMP UNIT immediately after the projector
has been used.
• The temperature of the LAMP UNIT is still high and could
cause a burn.
• Allow a cooling period of 1 hour or more before performing
replacement.
• Before starting LAMP UNIT replacement work, turn off the
MAIN POWER switch, and disconnect the AC power cord plug
from the wall outlet.
• If touched, the lamp glass surface may rupture and burns may
result. Do not touch the glass portion or metal portion. Handle
only plastic handle.
• The replaced old lamp can be discarded in the same manner
as a fluorescent lamp. Check local ordinances and dispose of
the used lamp as prescribed.
LAMP NEEDS TO BE REPLACED.
REFER TO OWNER'S MANUAL FOR
REPLACEMENT INSTRUCTIONS.
AFTER REPLACING THE LAMP,
PLEASE RESET TIMER IN THE TV
MENU.
PRESS OK, IF YOU DO NOT WANT
TO SEE THIS MESSAGE AGAIN.
LAMP REPLACEMENT MESSAGE

1-6 (No.YA337)
1.4 SERVICE PARTS KIT INSTRUCTIONS
Due to the character of this product, these OPTICAL /DRIVE
ASS'Y are prepared.
Please note these OPTICAL/DRIVE ASS'Y when replacing or
ordering the parts.
1.4.1 PART NUMBER AND CONSTRUCTION
1.4.2 OPTICAL / DRIVE ASS'Y CONSTRUCTION
(1) OPTICAL BLOCK
(Included D-ILA DEVICE, PROJECTION LENS)
(2) OPTICAL BASE
(3) DRIVE PWB ASS'Y
This PWB is mounted with 1 memory IC saved with
adjustment, setting data of the drive circuit.
(4) SHIELD COVER
*The following parts without the kits part.
• REMOTE SENSOR PWB ASS'Y
• LAMP UNIT
• LAMP FAN DUCT
• THERMOSTAT
1.4.3 PRECAUTION FOR USING
(1) In the case of the following defects/problems, replace this
kit (OPTICAL/DRIVE ASS'Y)
a) Picture defect caused by optical system/D-ILA device
related parts.
b) Picture defect caused by drive circuit.
(2) The DRIVE PWB ASS'Y is mounted with a memory IC
[IC3753] saved with adjustment/setting data (GAMMA,
SHADING, etc.) of the drive circuit.
The data of this memory IC is in the optimal state according
to individual D-ILA devices and each section of the
OPTICAL BLOCK.
(3) When replace the DRIVE PWB ASS'Y, take off the 1
memory IC from the original board and replace with new
one. When replace the DRIVE PWB ASS'Y, do same
manner. Replace 1 memory IC.
(4) After the replacement of the OPTICAL BLOCK, projection
lens focus adjustment and drive convergence / projection
adjustment are required.
1.5 SCREEN HANDLING CAUTIONS
1.5.1 SCREEN STORAGE
Store the SCREEN ASS'Y in a standing position in order to avoid
deformation. If the screen is stored horizontally, there is risk of
deforming the screen face.
When necessary to place the SCREEN ASS'Y horizontally,
position the screen side upwards and sure to place spacers
between the screen and resting site (floor or stand etc.) to
prevent the screen from sagging.
1.5.2 SCREEN SURFACE
Since the screen surface is easily scratched or soiled, use ample
care when handling.
1.5.3 PRECAUTIONS FOR CLEANING AND REPLACEMENT
• The SCREEN ASS'Y is made from the lenticular lens and
fresnel lens. The anti static proceeding and the surface of the
lenticular lens. Rubbing the surface with something hard, the
coating may peel off.
• When the screen is dirty, gently wipe it with a soft cloth.
If the screen is very dirty, wipe it down with a cloth dipped in a
diluted kitchen cleaner (neutrality detergent) and thoroughly
wrung-out. Then wipe immediately after with clean, dry cloth.
Never use the organic solvent such as the alcohol or benzine.
• The SCREEN ASS'Y replacement is required if the coating
was peel off. Alkaline detergent or acidity detergent can not be
be used.
• The notched side of the lenticular lens and the fresnel lens are
faced each other.
• Do not rub the screen when cleaning it or replaceing it.
Rubbing the screen may cause of the scratch of the screen by
its notch.
Kit parts number Kit part name
TS-COP8A-SAA OPTICAL / DRIVE ASS'Y
OPTICAL/DRIVE ASS'Y

(No.YA337)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 SYSTEM SETTEING
(1) Set to "0 minutes" using the [SLEEP TIMER] key.
(2) While "0 minutes" is displayed, press the [VIDEO
STATUS] key and [DISPLAY] key simultaneously, then
enter the SERVICE MODE.
(3) When the SERVICE MENU SCREEN is displayed, press
[2] key to enter the self check mode.
(4) Turn off the power by pressing the [POWER] key on the
remote control unit.
2.2 FEATURES
Built in ATSC (Advanced Television Systems Committee)
TUNER
This TV can receive both Digital broadcasting (ATSC) and
Analogue 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.
SMART CAPTION
Smart caption will appear when you press the MUTING button,
only on channels where the broadcast contains CLOSED
CAPTION information.
VIDEO STATUS
Expression of a favorite screen can be chosen by the VIDEO
STATUS function.
DIGITAL INPUT
Digital-in will display when any picture signal in Digital-in is
displayed.
V-CHIP
Since the V-CHIP is built in, it can choose, view and listen to a
healthy program.
MTS STEREO
The voice multiplex function of the MTS system is built in.
(MTS = Multi channel Television Sound system)
NATURAL CINEMA
Watching the movie or animation, press the Natural Cinema to
adjust the out line of the images to make thin more sharp.
VIDEO INPUT LABEL
This function is used to label video input connections for the
onscreen displays.
2.3 MAIN DIFFRENCE LIST
Be sure to carry out the following operation at the end of
the procedure.
SERVICE MENU SCREEN
SELF CHECK MODE SCREEN
SERVICE MENU
SERVICE MENU
1. ADJUST
1. ADJUST
2. SELF CHECK
2. SELF CHECK
3. I2C STOP
3. I2C STOP
LOB 0 FAN 0
LOB 0 FAN 0
AUD 0
AUD 0
ANA 9 DIG 9
ANA 9 DIG 9
0000 0
0000 0
0
0
Item HD-56FH96 HD-61FH96 HD-70FH96
MEDIA CARD VIEWER NO NO YES
DIGITAL PWB SRA0D003A-M2 SRA0D002A-M2 SRA0D001A-M2
ANALOG PWB SRA-1002A-M2 ←SRA-1001A-M2
POWER PWB SRA-9002A-M2 ←SRA-9001A-M2
CARD VIEWER PWB -------- -------- SRP-8511A-M2

1-8 (No.YA337)
2.4 TECHNICAL INFORMATION
2.4.1 D-ILA DEVICE SPECIFICATION
2.4.2 PROJECTION UNIT
2.4.3 IMAGE LIGHT FLOW
2.4.4 D-ILA DEVICE STRUCTURE
Item Content
Resolution H: 1952 ×V:1088
Pixel number about 2123776
Pixel size H : 8.1µm ×V :8.1µm
Aspect ratio 16 : 9
Contrast ratio 5000 : 1
Aperture ratio 89% or more
Effective pixel measurement 0.7 inch
R DEVICE
G DEVICE
OPTICAL IRIS
B DEVICE
Lamp unit
Incident light
Device
BRG
B
BRG
R
Projection
light
G
Mirror
MirrorMirror
FRONT
DEVICE UNIT SECTION (TOP VIEW)
Device
Device
Incident
light
Pixel
FRONT
Incident light
Projection light
Glass
substrate
Transparent
electrode
Reflective pixel
electrode
Back
Plane
Liquid
crystal
Flat film
R / G / B DEVICE (SIDE VIEW)
8.1 m
PIXEL VIEW (FRONT VIEW)
8.1 m

(No.YA337)1-9
2.4.5 MAIN CPU PIN FUNCTION [IC7601 : DIGITAL PWB ASS'Y]
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 P2.1 O Clock for Inter IC (serial) bus control
22 OUT2 O YM (transparence) for OSD 72 P2.0 I/O Data for Inter IC (serial) bus control
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 77 NC O Not used
28 CLK2 O Not used 78 NC O Not used
29 RxD2 I Digital tuner control 79 NC O Not used
30 TxD2 O Digital tuner control 80 P1.0 O Function LED lighting
31 SDA2 I/O Not used 81 P0.7 O Communication LED lighting
32 DIGR1 O R [1] for OSD 82 P0.6 O Test point
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
36 RxD0 O Data transmission (serial) for external programming 86
POWER_SW I Power switch (mechanical) detection
37 CLK0 I Clock for external programming 87 SDA I/O Data for Inter IC (serial) bus control : memory
38 RTS0 O Busy for external programming [Operation = H] 88 SLC 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 (INPUT/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

1-10 (No.YA337)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
CAUTION AT DISASSEMBLY:
•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.
• 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.
• Wait until the LAMP UNIT has cool down is completely.
• While not in repair service, place the chassis back its original position.
3.1.1 FRONT SIDE DISASSEMBLY [HD-56FH96]
3.1.1.1 REMOVING THE SPEAKER GRILL (Fig.1)
(1) Remove the 2 screws [A].
(2) Remove the SPEAKER GRILL.
NOTE:
As a speaker grille is depressed downward, it is removed.
3.1.1.2 REMOVING THE ORNAMENT PANEL (Fig.1)
• Remove the SPEAKER GRILL.
(1) Remove the 6 screws [B].
(2) Remove the ORNAMENT PANEL.
3.1.1.3 REMOVING THE CENTER PANEL (Fig.1)
• Remove the SPEAKER GRILL.
(1) Remove the 4 screws [C].
(2) Remove the CENTER PANEL.
3.1.1.4 REMOVING THE FRONT LED PWB (Fig.1)
• Remove the SPEAKER GRILL.
(1) Remove the 2 screws [D].
(2) Remove the FRONT LED PWB.
NOTE:
Remove the earth wire connected to the FRONT LED PWB
simultaneously.
3.1.1.5 REMOVING THE SPEAKER (Fig.1)
• Remove the SPEAKER GRILL.
(1) Remove the 4 screws [E].
(2) Remove the SPEAKER.
(3) Remove the opposite SPEAKER same steps.
3.1.1.6 REMOVING THE CENTER COVER (Fig.1)
• Remove the SPEAKER GRILL.
(1) Remove the 2 screws [F].
(2) Remove the CENTER COVER.
3.1.1.7 REMOVING THE FRONT PANEL (Fig.1)
• Remove the SPEAKER GRILL.
(1) Remove the 10 screws [G].
(2) Remove the 12 screws [H].
(3) Remove the FRONT PANEL.
3.1.1.8 REMOVING THE SCREEN BLOCK (Fig.1)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
(1) Remove the 8 screws [J].
(2) Remove the FRONT PANEL.
CAUTION :
• Place the SCREEN BLOCK on a flat table without fail.
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
• Use care not to scratch the screen during work.
• During assembly, be sure to engage the left and right tabs
with the cabinet mounting positions.
• When supporting the SCREEN BLOCK, avoid grasping the
top of the screen panel, instead grasp the left and right
areas.
• Do not leave the SCREEN BLOCK removed for long time to
prevent soiling from dust.
3.1.1.9 REMOVING THE SCREEN ASS'Y (Fig.1)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 12 screws [K].
(2) Remove the SCREEN ASS'Y.

(No.YA337)1-11
Fig.1
FRONT
SCREEN BLOCK
SCREEN BRACKET
SCREEN ASS'Y
FRONT BRACKET
SPEAKER
BACK COVER
SPEAKER
CENTER COVER
FRONT PANEL
SCREEN BLOCK
MAIN BODY
FRONT
LED PWB
SPEAKER GRILL
ORNAMENT PANEL
CENTER
PANEL
B
F
E
B
C
E
J
G
H
K
K
A

1-12 (No.YA337)
3.1.1.10 REMOVING THE MIRROR (Fig.2)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 4 screws [A] attaching the MIRROR HOLDER
of the upper side.
(2) Remove the 6 screws [B] attaching the MIRROR HOLDER
of left and right side.
(3) Raise slightly to disengage of the MIRROR from the bottom
holder
(4) Remove the MIRROR.
NOTE :
• Do not touch the front of the MIRROR.
• Do not shock the the MIRROR.
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
3.1.1.11 REMOVING THE SIDE CONTROL PWB (Fig.2)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 2 screws [C].
(2) Remove the SIDE CONTROL BASE.
(3) Remove the 2 screws [D].
(4) Remove the SIDE CONTROL PWB.
3.1.1.12 REMOVING THE SUPPORT HOLDER (Fig.2)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 2 screws [E].
(2) Remove the SUPPORT HOLDER.
3.1.1.13 REMOVING THE BACK COVER (Fig.2)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
• Remove the SUPPORT HOLDER.
(1) Remove the 6 screws [F] and the 2 screws [G].
(2) Remove the BACK COVER
CAUTION :
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
3.1.1.14 REMOVING THE SPEAKER BOX (Fig.2)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
• Remove the SUPPORT HOLDER.
• Remove the BACK COVER.
(1) Remove the 2 screws [H].
(2) Remove the SPEAKER BOX.
(3) Remove the opposite SPEAKER BOX same steps.

(No.YA337)1-13
Fig.2
MAIN BODY
SUPPORT HOLDER
SIDE CONTROL
PWB
SIDE CONTROL
BASE
SPEAKER
BOX
SPEAKER
BOX
MIRROR
MIRROR HOLDER
MIRROR HOLDER
MIRROR HOLDER
BACK COVER
FRONT
D
C
E
H
G
H
B
A
B
F

1-14 (No.YA337)
3.1.2 FRONT SIDE DISASSEMBLY [HD-61FH96]
3.1.2.1 REMOVING THE SPEAKER GRILL (Fig.3)
(1) Remove the 2 screws [A].
(2) Remove the SPEAKER GRILL.
NOTE :
As a speaker grille is depressed downward, it is removed.
3.1.2.2 REMOVING THE ORNAMENT PANEL (Fig.3)
• Remove the SPEAKER GRILL.
(1) Remove the 6 screws [B].
(2) Remove the ORNAMENT PANEL.
3.1.2.3 REMOVING THE CENTER PANEL (Fig.3)
• Remove the SPEAKER GRILL.
(1) Remove the 4 screws [C].
(2) Remove the CENTER PANEL.
3.1.2.4 REMOVING THE FRONT LED PWB (Fig.5)
• Remove the SPEAKER GRILL.
(1) Remove the 2 screws [D].
(2) Remove the FRONT LED PWB.
NOTE :
Remove the earth wire connected to the FRONT LED PWB
simultaneously.
3.1.2.5 REMOVING THE FRONT PANEL WITH SCREEN
ASS'Y (Fig.3)
• Remove the SPEAKER GRILL.
(1) Remove the 10 screws [E] and 4 screws [F].
(2) Remove the FRONT PANEL with SCREEN ASS'Y.
CAUTION :
• Place the FRONT PANEL with SCREEN ASS'Y on a flat
table without fail.
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
• Use care not to scratch the screen during work.
• Do not leave the FRONT PANEL with SCREEN ASS'Y
removed for long time to prevent soiling from dust.
3.1.2.6 REMOVING THE SCREEN ASS'Y (Fig.3)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL with SCREEN ASS'Y.
(1) Remove the 20 screws [G] and 4 screws [H].
(2) Remove the SCREEN BRACKET.
(3) Remove the SCREEN ASS'Y from the FRONT PANEL.
3.1.2.7 REMOVING THE CENTER COVER (Fig.3)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL with SCREEN ASS'Y.
(1) Remove the 2 screws [J].
(2) Remove the CENTER COVER.
3.1.2.8 REMOVING THE SPEAKER (Fig.3)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL with SCREEN ASS'Y.
(1) Remove the 4 screws [K].
(2) Remove the SPEAKER.
(3) Remove the opposite SPEAKER same steps.
3.1.2.9 REMOVING THE SPEAKER PLATE (Fig.3)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL with SCREEN ASS'Y.
• Remove the SPEAKER.
(1) Remove the 6 screws [L].
(2) Remove the SPEAKER PLATE.
3.1.2.10 REMOVING THE BACK COVER FILTER (Fig.3)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL with SCREEN ASS'Y.
(1) Remove the 1 screw [M].
(2) Remove the FILTER COVER with BACK COVER FILTER.
(3) Remove the BACK COVER FILTER from FILTER COVER.

(No.YA337)1-15
Fig.3
FRONT
SCREEN ASS'Y
SCREEN BRACKET
SPEAKER
FILTER
COVER
CENTER
COVER
BACK COVER
FILTER
SPEAKER
PLATE
SPEAKER
SPEAKER
PLATE
BACK COVER
FRONT PANEL
FRONT
LED PWB
SPEAKER GRILL
ORNAMENT PANEL
CENTER
PANEL
SCREEN BRACKET
D
B
C
J
E
H
K
K
L
L
M
M
G
E
A

1-16 (No.YA337)
3.1.2.11 REMOVING THE MIRROR (Fig.4)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
(1) Remove the 6 screws [A] attaching the MIRROR HOLDER
of the upper side.
(2) Remove the 6 screws [B] attaching the MIRROR HOLDER
of left and right side.
(3) Raise slightly to disengage of the MIRROR from the bottom
holder
(4) Remove the MIRROR.
NOTE :
• Do not touch the front of the MIRROR.
• Do not shock the MIRROR.
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
3.1.2.12 REMOVING THE SIDE CONTROL PWB (Fig.4)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
(1) Remove the 2 screws [C].
(2) Remove the SIDE CONTROL BASE.
(3) Remove the 2 screws [D].
(4) Remove the SIDE CONTROL PWB.
3.1.2.13 REMOVING THE CORNER COVER (Fig.4)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
(1) Remove the 1 screw [E].
(2) Remove the CORNER COVER.
(3) Remove the opposite CORNER COVER same steps.
3.1.2.14 REMOVING THE BACK COVER (Fig. 4)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
• Remove the SPEAKER and SPEAKER PLATE.
(1) Remove the 2 screws [F], 9 screws [G] and 6 screws [H].
(2) Remove the BACK COVER from MAIN BODY.
CAUTION :
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.

(No.YA337)1-17
Fig.4
MAIN BODY
SIDE CONTROL
PWB
SIDE CONTROL
BASE
MIRROR
MIRROR HOLDER
MIRROR HOLDER
CORNER
COVER
CORNER
COVER
MIRROR HOLDER
FRONT
BACK COVER
D
C
F
B
A
B
H
E
E
F

1-18 (No.YA337)
3.1.3 FRONT SIDE DISASSEMBLY [HD-70FH96]
3.1.3.1 REMOVING THE SPEAKER GRILL (Fig.5)
(1) Remove the 2 screws [A].
(2) Remove the SPEAKER GRILL.
NOTE :
As a speaker grille is depressed downward, it is removed.
3.1.3.2 REMOVING THE ORNAMENT PANEL (Fig.5)
• Remove the SPEAKER GRILL.
(1) Remove the 6 screws [B].
(2) Remove the ORNAMENT PANEL.
3.1.3.3 REMOVING THE CENTER PANEL (Fig.5)
• Remove the SPEAKER GRILL.
(1) Remove the 4 screws [C].
(2) Remove the CENTER PANEL.
3.1.3.4 REMOVING THE FRONT LED PWB (Fig.5)
• Remove the SPEAKER GRILL.
(1) Remove the 2 screws [D].
(2) Remove the FRONT LED PWB.
NOTE :
Remove the earth wire connected to the FRONT LED PWB
simultaneously.
3.1.3.5 REMOVING THE SPEAKER (Fig.5)
• Remove the SPEAKER GRILL.
(1) Remove the 4 screws [E].
(2) Remove the SPEAKER.
(3) Remove the opposite SPEAKER same steps.
3.1.3.6 REMOVING THE FRONT PANEL (Fig.5)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
(1) Remove the 10 screws [F] from rear side.
(2) Remove the 20 screws [G] from front side.
(3) Remove the FRONT PANEL.
3.1.3.7 REMOVING THE SCREEN BLOCK (Fig.5)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
(1) Remove the 6 screws [H] and 8 screws [J].
(2) Remove the SCREEN BLOCK.
CAUTION :
• Place the SCREEN BLOCK on a flat table without fail.
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
• Use care not to scratch the screen during work.
• During assembly, be sure to engage the left and right tabs
with the cabinet mounting positions.
• When supporting the SCREEN BLOCK, avoid grasping the
top of the screen panel, instead grasp the left and right
areas.
• Do not leave the SCREEN BLOCK removed for long time to
prevent soiling from dust.
3.1.3.8 REMOVING THE SCREEN ASS'Y (Fig.5)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 12 screws [K].
(2) Remove the SCREEN BRACKET and SCREEN ASS'Y.
3.1.3.9 REMOVING THE CENTER COVER (Fig.5)
• Remove the SPEAKER GRILL.
• Remove the FRONT PANEL.
(1) Remove the 2 screws [L].
(2) Remove the CENTER PANEL.

(No.YA337)1-19
Fig.5
F
E
C
B
D
G
A
E
A
L
FRONT SPEAKER
SPEAKER
CENTRE COVER
BACK COVER
FRONT PANEL H
SCREEN BRACKET
SCREEN BRACKET
SCREEN BLOCK
K
K
K
K
SCREEN ASS'Y
SCREEN BLOCK
MAIN BODY
J
FRONT
LED PWB
ORNAMENT PANEL
CENTER PANEL
SPEAKER GRILL

1-20 (No.YA337)
3.1.3.10 REMOVING THE MIRROR (Fig.6)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 2 screws [A] attaching the MIRROR HOLDER
STOPPER.
(2) Remove the 2 screws [B] and 2 screws [C] attaching the
MIRROR HOLDER upper side.
(3) Remove the 2 screws [D], 6 screws [E] and 2 screws [F]
attaching the MIRROR HOLDER of left and right side.
(4) Raise slightly to disengage of the MIRROR from the bottom
holder
NOTE :
• Do not touch the front of the MIRROR.
• Do not shock the MIRROR.
• Because of the large size, at least 2 persons are
recommended for removal and reassemble.
3.1.3.11 REMOVING THE BACK COVER BRACKET (Fig.6)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 6 screws [G] and 3 screws [H].
(2) Remove the rear side BACK COVER BRACKET.
(3) Remove the 4 screws [J], 1 screw [K] and 1 screw [L].
(4) Remove the left side BACK COVER BRACKET.
(5) Remove the righ side BACK COVER BRACKET same
step.
3.1.3.12 REMOVING THE SIDE CONTROL PWB (Fig.6)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
(1) Remove the 4 screws [M].
(2) Remove the SIDE CONTROL BASE.
(3) Remove the 2 screws [N].
(4) Remove the SIDE CONTROL PWB.
3.1.3.13 REMOVING THE SPEAKER BOX (Fig.6)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
• Remove the BACK COVER BRACKET.
(1) Remove the 3 screws [P].
(2) Remove the SPEAKER BOX.
(3) Remove the opposite SPEAKER BOX same steps.
3.1.3.14 REMOVING THE BACK COVER (Fig.6)
• Remove the SPEAKER GRILL.
• Remove the SPEAKER.
• Remove the FRONT PANEL.
• Remove the SCREEN BLOCK.
• Remove the BACK COVER BRACKET.
• Remove the SPEAKER BOX.
(1) Remove the 4 screws [Q] and 2 screws [R].
(2) Remove the BACK COVER.