JVC AV-34WP84 /ZA User manual

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED No.52170
2003/10
COLOR TELEVISION
52170200310 AV-34WP84/ZA
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
TV
VCR CHANNEL VCR / DVD
PREV NEXT POWER TV/VCR
REW
REC
OPEN/CLOSE STILL/PAUSE
STOP PAUSE
PLAY FF
INPUT1
INPUT4
INPUT3
DIGITAL-IN
THEATER
PRO
NATURAL
CINEMA
MUTING C.C.
C.C.
BACKMENU
CH
CH
VOL VOL
RETURN
VIDEO
STATUS
SLEEP TIMER DISPLAY SOUND
LIGHT
INPUT2
V1
V4
V3
D-IN
V2
/TV
OK
FREEZE SWAP
SPLIT POP
EZ SURF
INDEX
SELECT
TV CATV VCR
ASPECT
DVD
MULTI SCREEN
POWER
3
456
78
0
9
12
i
BASIC CHASSIS
SB4

1-2 (No.52170)
SPECIFICATION
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) 91.2cm ×62.4cm ×59.3cm (36" ×24-6/4" ×23-3/8")
Mass 74.0 kg (162.8 Ibs)
TV RF System CCIR (M)
Color System NTSC
Sound System BTSC (Multi Channel Sound)
TV Receiving Channels
and Frequency VHF Low VHF High
UHF
CATV
02ch~06ch : 54MHz~88MHz
07ch~13ch : 174MHz~216MHz
14ch~69ch : 470MHz~806MHz
54MHz~804MHz
Low Band : 02~06, A-8 by 02~06&01
High Band : 07~13 by 07~13
Mid Band : A~I by 14~22
Super Band : J~W by 23~36
Hyper Band : W+1~W+28 by 37~64
Ultra Band : W+29~W+84 by 65~94, 100~125
Sub Mid Band : A4~A1 by 96~99
TV / CATV Total Channel 180 Channels
Intermediate Frequency Video IF
Sound IF 45.75 MHz 41.25 MHz (4.5MHz)
Color Sub Carrier 3.58 MHz
Power Input AC120V , 60Hz
Power Consumption 229W (Max)
Picture Tube (Visible size) Full-Flat type, Aspect ratio 16:9 (Wide screen)
80cm (34") (Diagonally) H:43.0cm ×W:75.9cm (17" ×30")
High Voltage 32kV+1kV/-1.3kV (at zero beam current)
Speaker 10cm (4"), round type ×2
3cm ×10cm (1-1/2" ×4"), oval type ×2
Audio Power Output 10W ×10W
Antenna terminal (VHF/UHF) F-type connector, 75Ωunbalanced, coaxial
Video / Audio input S-Video
[INPUT-1/3/4]
Video
Audio
Component Video
[INPUT-1/2]
1125i / 750p
525p / 525i
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
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 : 0.35V(p-p), 75 Ω
Digital-in Video
Audio
DVI-D 24-pin connector ×1
(Digital-input terminal is not compatible with computer signal)
500mV (rms), 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 (400Hz when modulated 100%)
Subwoofer output More than 0 to 1000mV (rms) (+2.2dBs),
low impedance (400Hz when modulated 100%), RCA pin jack ×1
Speaker input 16Ω, 20W (rms)
AV compulink III 3.5mm mini jack ×1
Remote Control Unit RM-C11G (AA/R6/UM-3 battery ×2)

(No.52170)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 visualinspectionnor can the protectionaffordedby 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) Use isolation transformer when hot chassis.
The chassis and any sub-chassis contained in some products are
connected to one side of the AC power line. An isolation
transformer of adequate capacity should be inserted between the
product and the AC power supply point while performing any
service on some products when the HOT chassis is exposed.
(5) Don't short between the LIVE side ground and ISOLATED (NEU-
TRAL) side ground or EARTH side ground when repairing.
Some model's power circuit is partly different in the GND. The differ-
ence of the GND is shownby the LIVE :( ) side GND, the ISOLAT-
ED (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.
(6) If any repair has been made to the chassis, it is recommended that
the B1 setting should be checked or adjusted (See B1 POWER
SUPPLY check).
(7) The high voltage applied to the picture tube must conform with that
specified in Service manual. Excessive high voltage can cause an
increase in X-Ray emission, 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 minimum level of soft X-Ray emission,
components in the high voltage circuitry including the picture tube
must be the exact replacements or alternatives approved by the
manufacturer of the complete product.
(8) 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.
(9) 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.
(10) 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 1100V AC
(r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance rat-
ed 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 notexceed 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.).
(11) High voltage hold down circuit check.
After repair of the high voltage hold down circuit, this circuit shall
be checked to operate correctly.See item "How to check the high
voltage hold down circuit".
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
PWB
White line side
WHT
PW
POWER CORD
REPLACEMENT WARNING.
Connecting the white line side of power
cord to "WHT" character side.
A V
This mark shows a fast
operating fuse, the
letters indicated below
show the rating.

1-4 (No.52170)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
Multi screen function
• POP (Picture out Picture)
Back programs can be seen at once. Three programs are
displayed on screen right-hand side besides the program
(VHF/ UHF/ CATV) received now.
• INDEX
A favorable program can be selected from the 12 previews on
the screen.
• SPLIT
Different images, such as a program and video, can be
simultaneously seen on two screens.
Provided with 2 tuners and 2 aspect (16:9 & 4:3) mode.
Multifunctional remote control permits picture adjustment.
The CH.GUARD function prevents the specific channels from
being selected, unless the "ID number" is entered.
I2C bus control utilizes single chip ICs.
Adoption of the VIDEO STATUS function.
• The VIDEO STATUS key gives you a choice of 4 picture
display settings, including a display of your own preferences.
Digital-in
To receive digital broadcasts.
Digital-in will display when any picture signal (480i/ 480p,
720p/ 1080i) in Digital-in is displayed.
Natural Cinema
Watching the movie or animation, press the Natural Cinema to
adjust the out line of the images to make thin more sharp.
Built-in V-CHIP system.
• This TV is equipped with V-CHIP technology which enables TV
parental guidelines and movie guideline controls.
Closed-caption broadcasts can be viewed.
Built-in MTS (Multi-channel Television Sound) system.
In addition to mono or stereo sound, an MTS broadcast may
also include a Second Audio Program (SAP).
Built-in A.H.S system & BBE sound system.
S-VIDEO input terminal for taking best advantage of Super
VHS.
3D Digital comb filter improves picture quality.
Plug-in menu
The plug-in menu comes up automatically when you first turn
on the TV after plugging it in.
2.2 DIGITAL-IN TERMINAL FUNCTIONS
STANDARD DYNAMIC THEATER GAME
PIN ASSIGNMENTPIN NAME
9
10
11
12
13
1
2
3
4
5
6
7
8
17
18
19
20
21
22
23
24
14
15
16
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Pin No.
14
15
16
17
18
19
20
21
22
23
24
Pin name
RX2-
RX2+
GND2/ 4
RX4-
RX4+
SCL
SDA
NC
RX1-
RX1+
GND1/3
RX3-
RX3+
Pin name
5V
GND
HTPLG
RX0-
RX0+
GND0/5
RX5-
RX5+
GNDC
TXC+
TXC-

(No.52170)1-5
2.3 HOW TO IDENTIFY MODELS
MODEL NO.
AC 120V 60Hz
W
TV SCREEN SIZE : DIAGONAL
INCHES
CHASSIS NO.
MANUFACTURED
SERIAL NO.
VIDEO EQUIPMENT
4C43
ME
AV-34WP84
How to recognize from the appearance of the model concerned is written below. Please distinguish from several contents
currently printed on the rating label.
ZA
DISTINGUISH NAME
MODEL NAME

1-6 (No.52170)
2.4 TECHNICAL INFORMATION
2.4.1 SYSTEM BLOCK DIAGRAM
TU1101
MI-COM
IC1001
IC3001
IC1301
TU0102
IC0701
IC0201
IC1502
MAIN PWB
LATCH
MTS/VOL/
TONE
RGB
PROCESSOR
3D Y/C SEP &
CHROMA
DECODER
DIST
PROCESS
COMPONENT
SW
SUB U/V
TUNER
IC1703
MEMORY
IC1701
SCL0
SDA0
SCL1
SDA1
SCL2
SDA2
SCL4
SDA4
SCL4 SDA4
MI-COM & DIST MODULE PWB
RECEIVER PWB
IC0161
IC0212
DEF OSC PWB
IC1704
FRONT CONTROL
PWB
SYNC
SW/DET.
IC1211
IC1301
IC1501
AV
SELECT
LATCH
DEF
CORRECTION
LATCH
LATCH
MAIN U/V
TUNER
SCL1
SDA1
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL2
SDA2
SDA3
IC3001
2D Y/C SEP &
CHROMA
DECODER
Q1713
Q1712
IC001
DIGITAL INPUT
MODULE PWB
FORMAT
CONVERT
SCL0
SDA0
SCL3

(No.52170)1-7
2.4.2 MAIN MICRO COMPUTER (CPU) FUNCTION
(MN102H75KPD)
Pin
No. Pin name Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
NC
/VSYNC
LB_PRO
NC
/RST
NC
/TEST
YS
SDA4
NC
A_MUTE
/HSYNC
NC
OSDXI
OSDXO
SDA2
AC_IN
SCL2
/TU_POW
VCOI
PDO
/IP_RESET
YM
B
LED_POWER
G
R
VREF
IP_ERR
IREF
COMP
AVDD
CLL
VREFLS
SUB_CCD
NC
VSS
MAIN_CCD
VREFHS
CLH
VDD
SCL4
NC
V. sync for OSD
Low B protect detection [Detect : H]
NC
CPU reset [Reset : L]
NC
Operation test for CPU
Ys (blanking) for OSD
I C bus (data) for DIST
NC
Audio muting [Muting :H]
H.sync for OSD
NC
Keep for OSD oscillation
Keep for OSD oscillation
I C bus(data) for MTS
AC(60Hz) for timer clock
I C bus (clock) for MTS
NC
LPF
LPF
Reset for DIST [Reset : L]
YM (transparence) for OSD
OSD blue
Lighting for POWER LED [Lighting : H]
OSD green
OSD red
Reference voltage for OSD
Reference current for OSD
Phase adjust for OSD
AMDP program load error detection
+3.3V
+3.3V
For Low clamp level
Reference voltage in for sub CCD
Composite video for sub CCD
NC
GND
Composite video for main CCD
For High clamp level
Reference voltage in for main CCD
I C bus (clock) for DIST
O
I
I
-
I
O
I
O
I/O
O
O
I
O
I
I
I/O
I
O
O
I
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
-
I
I
I
I
I
O
I/O Pin
No. Pin name Function
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
CLK_SW
LED_ON_TIMER
NC
NC
SBT1
NC
NC
NC
NC
ABL/ACL
CHROME
DC_COTL
NC
NC
AFC_1
/LOB_POW
/COMPLINK
/POWERGOOD
/MECA_ON
/MAIN_POW
NC
/B1_POW
AFC2
X-RAY
NC
KEY2
KEY1
SCL1
SDA1
REMO
NC
VSS
OSC2
OSC1
VDD
SCL0
NC
SDA0
NC
NC
NC
P MUTE
IP clock switch control
NC
NC
Use for on board writing [for factory]
NC
NC
NC
NC
NC
ABL/ACL control
Chroma / Gamma control
Black level DC reproduce control
NC
NC
Sub AFT voltage
LOB power control [Power on : L]
AV compulink control
Power condition check
Power SW interrupt [Pushing :L]
Main power control [Power on : L]
NC
B1 power control [Power on : L]
Main AFT voltage
X-ray protect detection [Protect : 0.7v]
NC
Key scan for front key (CH+,Vol-/+)
Key scan for front key (Menu,CH-)
I C bus (clock) for main memory
I C bus (clock) for generally
I C bus (data) for generally
I C bus (data) for main memory
GND
System clock oscillation (4MHz)
System clock oscillation (4MHz)
+3.3V
NC
Remote control
NC
NC
NC
NC
Picture muting
O
O
O
I
I
O
O
O
O
O
O
O
O
O
I
O
I
I
I
O
-
O
I
I
I
I
I
O
I/O
I
O
I
O
I
I
O
O
I/O
O
I
-
O
I/O

1-8 (No.52170)
2.5 FUNCTIONS
zFRONT PANEL
zAV TERMINAL (REAR)
CHANNEL VOLUMEMENU
INPUT 4
VIDEO L/MONO R
AUDIO
S-VIDEO
INPUT 4
OVER
POWER
ON TIMER
INPUT-4 terminals(S-video,Video,Audio L/MONO /R)
INPUT-4 button
MENU button
CHANNEL -/+ buttons
Operate button (for MENU)
VOLUME -/+ buttons
Sensor (for remote control unit)
POWER & ON TIMER lamp
POWER(Main) button
9
85
3
12
8
9
7
64
SUBWOOFER
SPEAKER INPUT
16 20W RMS
OUT
LINPUT-1INPUT-2
VIDEO
DIGITAL-IN
L
R
AUDIO
Y
Pb
Pr
Y
Pb
Pr
Antenna (VHF/UHF) terminal
AUDIO OUT (L/R) terminal
INPUT-3 terminal (S-video / Video /Audio L/R)
SUBWOOFER OUT terminal
INPUT-2 terminal (Video/Audio L/R)
INPUT-1 terminal (S-video / Video /Audio L/R)
AV COMPULINK terminal
COMPONENT VIDEO INPUT-2 terminal (Y/P b /P r )
COMPONENT VIDEO INPUT-1 terminal (Y/P
b /P r )
DIGITAL-IN terminal [Video(DVI 24pin), Audio L/R]
SPEAKER INPUT terminal
3
4
5
6
1
7 8 9 10
11
2

(No.52170)1-9
zREMOTE CONTROL (RM-C11G)
TV
VCR CHANNEL VCR / DVD
PREV NEXT POWER TV/VCR
REW
REC
OPEN/CLOSE STILL/PAUSE
STOP PAUSE
PLAY FF
INPUT1
INPUT4
INPUT3
DIGITAL-IN
THEATER
PRO
NATURAL
CINEMA
MUTING C.C.
C.C.
BACKMENU
CH
CH
VOL VOL
RETURN
VIDEO
STATUS
SLEEP TIMER DISPLAY SOUND
LIGHT
INPUT2
V1
V4
V3
D-IN
V2
/TV
OK
FREEZE SWAP
SPLIT POP
EZ SURF
INDEX
SELECT
TV CATV VCR
ASPECT
DVD
MULTI SCREEN
POWER
3
456
78
0
9
12
i
TV / CATV switch
VCR / DVD switch
POWER key
DISPLAY key
MULTI SCREEN key:
SPLIT key: 2 screen mode can be displayed.
POP key: 3 separate pictures can be displayed on the right side of the main picture.
INDEX key: 12 screen mode
can be displayed.
EZ SURF key: Back program can be displayed.
FREEZ key: The still picture can be displayed.
SWAP key: In SPLIT mode, the channel displayed in the split screen window can be
exchanged for the main screen.
SELECT key: The picture can be selected while viewing POP or SPLIT screen.
Input select keys:
(INPUT1, INPUT2, INPUT3, INPUT4, DIGITAL-IN)
100+ key
RETURN+/TV key
NATURAL CINEMA key:
LIGHT key
MUTING key (memory key
for SERVICE MENU )
BACK key
MENU key
VCR / DVD control keys
The CH+/- keys and VOL+/- keys operate CHANNEL and
VOLUME normally.
These keys are also used to navigate SERVICE MENU as the
/ and / keys.
VIDEO STATUS key:
STANDARD DYNAMIC THEATER GAME
SOUND key:
A.H.S: and BBE ON/OFF can be set
ASPECT key:
PANORAMA CINEMA FULL REGULAR
SLEEP TIMER key:
0 15 30 165 180
Channel number keys
VOL+/- & /
(for SERVICE MENU) keys
CH+/- & / (for SERVICE MENU) keys
C.C. (CLOSED CAPTION) key:
OFF CAPTION TEXT
AUTO ON OFF
MOVIE MUSIC OFF
NOTE
THEATER PRO key
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
13
5
7
11 12
19
6
8921
23
10
17
15 14
18
16
20
22
1 2 3 4

1-10 (No.52170)
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE REAR COVER
• Unplug the power supply cord.
(1) Remove the 16 screws [A] as shown in Fig.1.
(2) Remove the REAR COVER toward you.
NOTE:
When reinstalling the REAR COVER, carefully push it inward
after inserting the chassis into the REAR COVER groove.
3.1.2 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 7 screws [B] as shown in Fig.1.
(2) When you pull out the AV TERMINAL BOARD in the
direction of arrow [a] as shown in Fig.1, it can be removed.
3.1.3 REMOVING THE CHASSIS
• Remove the REAR COVER.
(1) Slightly raise the both sides of the CHASSIS by hand and
remove the 2 claws under the both sides of the CHASSIS
from the front cabinet.
(2) Draw the CHASSIS backward along the rail in the arrow
direction [a] as shown in Fig.1.
(If necessary, take off the wire clamps, connectors etc.)
NOTE:
When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and MAIN PWB or DEF & POWER PWB.
3.1.4 REMOVING THE CONTROL BASE
• Remove the REAR COVER.
Remove the CHASSIS.
(1) While pushing down the claws [b] as shown in Fig.2.
(2) Remove the CONTROL BASE in the arrow direction
marked [c].
( If necessary, take off the wire clamps, connectors etc. )
3.1.5 REMOVING THE DIGITAL INPUT MODULE PWB
• Remove the REAR COVER
• Remove the AV TERMINAL BOARD.
(1) Remove the 2 screws [C] as shown in Fig.1.
(2) Remove the DIGITAL INPUT MODULE PWB in the arrow
direction [d].
NOTE:
If necessary, take off the wire clamps, connectors etc.
3.1.6 REMOVING THE DOME SPEAKER BOX
• Remove the REAR COVER.
(1) Remove the 2 screws [D] as shown in Fig.1.
(2) Remove the DOME SPEAKER BOX toward you.
(3) Follow the same steps when removing the other hand
speaker.
3.1.7 REMOVING THE SPEAKER / SPEAKER HOLDER
• Remove the REAR COVER.
• Remove the DOME SPEAKER BOX
(1) Remove the 2 screws [E] as shown in Fig.1.
(2) Remove the SPEAKER HOLDER toward you.
(3) Remove the 2 screws [F] as shown in Fig.1.
(4) Draw the SPEAKER toward you.
(5) Follow the same steps when removing the other hand
SPEAKER.
3.1.8 CHECKING THE PW BOARD
• To check the backside of the circuit board.
(1) Pull out the CHASSIS. (Refer to REMOVING THE
CHASSIS).
(2) Erect the CHASSIS vertically so that you can easily check
the backside of the PW Board.
CAUTION:
• When erecting the CHASSIS, be careful so that there will be
no contact with other PWB.
• Before turning the power on, make sure that the CRT earth
wire and other connectors are properly connected.
3.1.9 WIRE CLAMPING AND CABLE TYING
(1) Be sure to clamp the wire.
(2) Never remove the cable tie used for tying the wires
together.
Should it be inadvertently removed, be sure to tie the wires
with a new cable tie.
CAUTION AT DISASSEMBLY
wire
SSB-7976A-M2AV-34WP84/ZA 34WP84CP-S WJJ0247-001A
1
3
5
2
4
6
Prior to disassembly, unplug the power cord from the wall
outlet without fail. (Turn the power “off”.)
Short the SB connector (1) pin and (2) pin of the digital input
unit. (At the time of assembling)
Before the rear cover is inserted into the cabinet, release the
short-circuit between the SB connector (1) pin and (2) pin of
the digital input unit.
After releasing the short-circuit between the SB connectors,
do not turn the power on until the rear cover is inserted into
the cabinet.
Negligence in carrying out the above steps may cause the
inactivation of the TV.
POWER CORD
AV TERMINAL
BOARD
SB
connector
DIGITAL INPUT MODULE

(No.52170)1-11
Fig.1
SPEAKER
SPEAKER
HOLDER
F
( x 4)
C
POWER CORD
B
( x 7)
( x 2)
( x 4)
( x 4)
D
( x 4)
E
REAR COVER
LINE FILTER
PWB
FRONT CABINET DOME
SPEAKER
BOX
CRT
SOCKET
PWB
FRONT
JACK
PWB
FRONT
CONTROL
PWB
FRONT
SENSOR
PWB
FRONT
SW
PWB
CLAW
CONTROL
BASE
CLAW
MI-COM &
DIST MODULE
PWB
A
SPACER
DEF OSC PWB
FBT
MAIN PWB
RECEIVER
PWB
( x 16)
CHASSIS
BASE
a
DEF & POWER
PWB
DIGITAL
INPUT
MODULE
PWB
AV TERMINAL
BOARD
d
Fig. 2
b
c
CONTROL
BASE
CHASSIS
BASE
CLAW

1-12 (No.52170)
3.1.10 REMOVING THE CRT (PICTURE TUBE)
NOTE:
• Replacement of the CRT should be performed by 2 or more
persons.
• After removing the REAR COVER, CHASSIS etc.,
(1) Putting the CRT change table on soft cloth, the CRT
change table should also be covered with such soft cloth
(shown in Fig. 3).
(2) While keeping the surface of CRT down, mount the TV set
on the CRT change table balanced will as shown in Fig. 3.
(3) Remove 4 screws marked by arrows with a box type
screwdriver as shown in Fig. 4.
NOTE:
Since the cabinet will drop when screws have been
removed, be sure to support the cabinet with hands.
(4) After 4 screws have been removed, put the cabinet slowly
on cloth (At this time, be carefully so as not to damage the
front
surface of the cabinet) shown in Fig. 5.
NOTE:
• The CRT should be assembled according to the
opposite sequence of its dismounting steps.
• The CRT change table should preferably be smaller
that the CRT surface, and its height be about 35cm.
COATING OF SILICON GREASE FOR ELECTRICAL INSULA-
TION ON THE CRT ANODE CAP SECTION.
Subsequent to replacement of the CRT and HV transformer or
repair of the anode cap, etc. by dismounting them, be sure to
coat silicon grease for electrical insulation as shown in
Fig.6.Wipe around the anode button with clean and dry cloth.
(Fig.6)Coat silicon grease on the section around the anode
button. At this time, take care so that any silicon greases dose
not sticks to the anode button. (Fig.7)
Fig.3
Fig.4
Fig.5
Fig.6
Fig.7
Whenever degaussing works are required due to distorted
images and colors caused by the replacement of the CRT
or other external magnetic forces, self-degaussing (internal
degaussing) should be carried out without fail instead of
degaussing the monitor from the outside.
Because of the characteristics of the CRT used in this
monitor , the distorted images and colors may worsen if
degaussing the monitor from the outside has been
performed.
Even if external degaussing works have been carried out,
self-degaussing should be performed by turning the power
on the monitor.
When you want to perform self-degaussing of the monitor
whose power is already turned on, turn of f the power and
wait for about 10 minutes before turning the power on the
monitor again for self-degaussing.
CAUTION FOR DEGAUSSING WORKS
CRT CHANGE TABLE
APPROX.
35cm
CLOTH
CRT
BOX
TYPE
SCREW
DRIVER
CRT
CHANGE
TABLE
CRT
CHANGE TABLE
CRT
CABINET
Anode button
CRT
Silicon grease
coating
Silicon grease product No. KS - 650N
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of anode
cap.
Approx.
20mm (Do not
coat grease on
this section
Anode button
(No sticking of
silicon grease) Anode cap
Coating position
of silicon grease

(No.52170)1-13
3.2 MEMORY IC REPLACEMENT
3.2.1 MEMORY IC
This model uses a memory IC.
This memory IC stores data for proper operation of the video and
deflection circuits.
When replacing the memory IC, be sure to use an IC containing
this (initial value) data.
3.2.2 MEMORY IC REPLACEMENT PROCEDURE
(1) Power off
Switch the power off and disconnect the power cord from
the wall outlet.
(2) Replace the memory IC
Initial value must be entered into the new IC.
(3) Power on
Connect the power cord to the wall outlet and switch the
power on.
(4) SERVICE MENU setting
Before entering the SERVICE MENU, confirm that the
setting of TV/CATV SW of the REMOTE CONTROL UNIT
is at the "TV" side and the setting of VCR/DVD SW of the
REMOTE CONTROL UNIT is at the "VCR" side. If the
switches have not been properly set, you cannot enter the
SERVICE MENU.
a) Press [SLEEP TIMER] key and while the indication of
SLEEP TIMER 0 MIN is being displayed, press
[DISPLAY] key and [VIDEO STATUS] key on the
remote control unit (Fig.2) simultaneously.
b) The SERVICE MENU screen as shown in Fig.1 is
displayed.
c) Verify what to set in the SERVICE MENU, and set
whatever is necessary (Fig.1).
Refer to the SERVICE ADJUSTMENT for setting.
d) Press the [BACK] key twice to return normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S
GUIDE) and set the receive channels (Channels Preset) as
described.
(6) User settings
Check the user setting items according to the steps
described in the after page.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER'S GUIDE) and set the items as
described.
Fig.1
Fig.2
3.3 FACTRY SETTING VALUE
3.3.1 SERVICE MENU SETTING MODE
1. PICTURE/SOUND
2. YC SEP
3. WHITE BALANCE
4. MEMORY SETUP
5. RF AFC
6.
7.
8. IP
9. DSD
0. HDMI
SERVICE MENU
RM-C11G
TV
VCR CHANNEL VCR / DVD
PREV NEXT POWER TV/VCR
REW
REC
OPEN/CLOSE STILL/PAUSE
STOP PAUSE
PLAY FF
INPUT1
INPUT4
INPUT3
DIGITAL-IN
THEATER
PRO
NATURAL
CINEMA
MUTING C.C.
C.C.
BACKMENU
CH
CH
VOL VOL
RETURN
VIDEO
STATUS
SLEEP TIMER DISPLAY SOUND
LIGHT
INPUT2
V1
V4
V3
D-IN
V2
/TV
OK
FREEZE SWAP
SPLIT POP
EZ SURF
INDEX
SELECT
TV CATV VCR
ASPECT
DVD
MULTI SCREEN
POWER
3
456
78
0
9
12
i
SERVICE MENU SELECT KEY
DISPLAY &
VIDEO
STATUS key
SLEEP
TIMER key
BACK key
/ key
/ key
TV/CATV
switch VCR/DVD switch
CHANNEL
NUMBER keys
POWER key
Select item
Set value
MENU key
MEMORY key
(MUTING)
Setting Item Settings Item No. Setting Item Settings Item No.
1.PICTURE/SOUND (SOUND AND PICTURE SETTING) 5.RF AFC
Sound circuits (A) Fixed A01~A27 IF VCO adjustment Adjust Refer to adjustment
Procedure
Video circuits (S) Adjust S01~S99 8.IP
Deflection circuits (D) Adjust D01~D32 DIST processing setting Fixed IPA001~IPA042
Factory setting items (F) Adjust F01~F70 9.DSD
2.YC SEP
Digital super detail setting
Fixed DSA001~DSA053
YC separation setting Fixed YCM001~YCS114 Fixed DSB001~DSB053
Fixed YCM001~YCS114 Fixed DSC001~DSC044
3.WHITE BALANCE Fixed DSD001~DSD017
White balance adjustment Adjust BR DRV R, DRV B
CUT R, CUT G, CUT B
0.HDMI
Digital input processing setting Fixed HDM001~HDM080
4.MEMORY SETUP Fixed RHD001~RHD170
Memory data edit Non adjust ---

1-14 (No.52170)
3.3.2 FACTORY SETTING
NTSC/ 480i / 480p system
1080i / 720p system
Setting item Setting value Setting item Setting value
POWER
CHANNEL
VOLUME
INPUT
DISPLAY
NATURAL CINEMA
ASPECT MODE
VIDEO STATUS
Off
CABLE-02
10
TV
Off
AUTO
REGULAR
DYNAMIC
ON / OFF TIMER NO
TV SPEAKER
AUDIO OUT
CENTER CH INPUT
DIGITAL-IN
NOISE MUTING
FRONT PANEL LOCK
V1 SMART INPUT
ON
FIX
NO
SIZE 1
ON
OFF
OFF
SOUND A.H.S OFF
BBE ON
SPLIT SOURCE Left side: CA-02
Right side: CA-04
Left side: CA-02
LANGUAGE
CLOSED CAPTION
AUTO SHUT OFF
XDS ID
TILT CORRECTION
PURITY
ENG
OFF ( CC1 / T1 )
OFF
OFF
Center
Center
POP SOURCE Right upper corner: CA-04
Right center side: CA-05
Right bottom corner: CA-07
TINT
COLOR
PICTURE
BRIGHT
DETAIL Refer to the following table
V-CHIP
SET LOCK CODE
AUTO DEMO
OFF
(0000)
OFF
COLOR TEMPERATURE
DIG. NOISE CLEAR
VSM(Velocity scan modulation) ON
BASS
TREBLE
BALANCE
MTS
Center (00)
Center (00)
Center (00)
STEREO
Item Setting value
TINT COLOR PICTURE BRIGHT DETAIL COLOR
TEMPERATURE DIGI. NOISE CLEAR
STANDARD 00 00 00 00 00 LOW OFF
DYNAMIC 00 00 +30 00 +30 HIGH OFF
THEATER 00 00 00 00 00 LOW OFF
GAME 00 00 -10 00 00 HIGH OFF
Item Setting value
TINT COLOR PICTURE BRIGHT DETAIL COLOR
TEMPERATURE DIGI. NOISE CLEAR
STANDARD 00 00 00 00 00 LOW OFF
DYNAMIC 00 00 +30 00 00 HIGH OFF
THEATER 00 00 00 00 00 LOW OFF
GAME 00 00 -10 00 00 HIGH OFF

(No.52170)1-15
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 al-
ternately 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 al-
ternately melt the solder at each lead. Shift and remove the
chip part.
NOTE :
After removing the part, remove remaining solder from the pat-
tern.
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 sol-
der. 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 sol-
der.
(3) First solder lead Aas indicated in the figure.
(4) Then solder leads Band C.
SOLDER SOLDER
AB
C
A
B
C

1-16 (No.52170)
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) You can make the necessary adjustments for this unit
with either the Remote Control Unit or with the
adjustment tools and parts as given below.
(2) Adjustment with the Remote Control Unit is made on
the basis of the initial setting values, however, the new
setting values which set the screen to its optimum
condition may differ from the initial settings.
(3) Make sure that AC power is turned on correctly.
(4) Turn on the power for set and test equipment before use,
and start the adjustment procedures after waiting at least
30 minutes.
(5) Unless otherwise specified, prepare the most suitable
reception or input signal for adjustment.
(6) Never touch any adjustment setting value, which are
not specified in the list for this adjustment.
(7) Presetting before adjustment.
Unless otherwise specified in the adjustment instructions,
preset the following functions with the remote control unit:
4.2 MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or digital voltmeter)
(2) Oscilloscope
(3) Frequency counter
(4) Signal generator (Pattern generator)
[NTSC (480i)/480p/720p/1080i/DIGITAL]
(5) TV audio multiplex signal generator
(6) Remote control unit
4.3 ADJUSTMENT ITEMS
Setting item Setting position
VIDEO STATUS STANDARD
TINT, COLOR, PICTURE,
BRIGHT, DETAIL Center (00)
COLOR TEMPERATURE LOW
DIG. NOISE CLEAR OFF
NATURAL CINEMA AUTO
BASS, TREBLE, BALANCE Center (00)
A.H.S OFF
BBE ON
ASPECT MODE 16:9
CAUTION
Never change the initial setting value any
adjustments except for those that are designated
in the adjustment procedures.
In case where you have made undesignated
adjustments by mistake, never press the MUTING
key on the remote control unit.
Whenever you had not pressed the MUTING key,
you would be able to recover the initial
value by
switching the POWER SW (on/off) key.
Adjustment items
1: B1 POWER SUPPLY
2: FOCUS
3: HORIZONTAL FREQUENCY
4: DEFLECTION CIRCUIT
V. POSITION / V. SIZE / V. LINEARITY adjustment
H. WIDTH / H.POSITION / SIDE PIN / TRAPEZIUM
adjustment
5: VIDEO CIRCUIT
WHITE BALANCE (Low Light & High Light)
adjustment
SUB BRIGHT / SUB CONTRAST adjustment
SUB COLOR / SUB TINT / B-Y GAIN adjustment
6: MTS CIRCUIT

(No.52170)1-17
4.4 ADJUSTMENT LOCATIONS / WIRING
4.4.1 MAIN PARTS (PWB) LOCATION
A
H
AV TERMINAL
BOARD
POWER
CORD
L K J
EBFGC
O
I
DNM
L : FRONT SENSOR PWB
M : TUNER (SUB)
A : CRT SOCKET PWB
B : MAIN PWB
C : DEF & POWER PWB
D : LINE FILTER PWB
E : RECEIVER PWB
F : MI-COM & DIST MODULE PWB
G : DEF OSC PWB
H : DIGITAL INPUT MODULE PWB
I : FRONT CONTROL PWB
J : FRONT JACK PWB
K : FRONT SW PWB
N : TUNER (MAIN)
O : FBT

1-18 (No.52170)
4.4.2 ADJUSTMENT LOCATION / WIRING DIAGRAM
B
R
S1
DC
AU
SR
S
M
CN000E
HG
FRONT
MAIN PWB
H
Y
POWER
SW
FRONT
DIST MODULE
MI-COM &
PWB
LINE FILTER
PWB
DEF OSC PWB
RECEIVER
PWB
Y
SN
SW
SE
SW
FRONT SW PWB
FRONT SENSOR PWB
FRONT CONTROL PWB FRONT JACK PWB
VOL-
VOL+
CH-
CH+
R
L/MONO
VIDEO
S-V
G
MAIN
TUNER
SUB
TUNER
(TU0102)
FRONT
FRONT
LED IND.
F
M
PW
BF
TOP
DEF & POWER
PWB
CN2003CN1003
CN2002
CN2001
CN1002
CN1001
CN1005
CN1006
CN2008
MAIN MICON
(CPU)
FUSE
MENU
INPUT4
Q
J
(TU1101)
IC703
J2101 J2111 J2121
DIGITAL INPUT
MODULE PWB
DEG
SPEAKER
L/R
CRT
SOCKET PWB
CN1004
SE SENSOR
TOP
FRONT
MEMORY IC

(No.52170)1-19
DEF OSC PWB
B
S1
1Pin : TP-E ( )
2Pin : X-ray2
3Pin : X-ray1
4Pin : NC
5Pin : TP-91B (B1)
S1
UPPER: H.FOCUS VR
UPPER: H.FOCUS VR
CENTER: V.FOCUS VR
CENTER: V.FOCUS VR
MAIN PWB
5
1
LOWER: SCREEN VR
LOWER: SCREEN VR
HV
H
FBT
E2 TP-E1
E
CRT SOCKET
TP-B
TP-R VM
A J
DEF & POWER PWB
DIGITAL INPUT
MODULE PWB
SB
CONNECT
TOP
VIDEO
IN
AUDIO
IN
CRT SOCKET PWB (solder side)
LINE FILTER
PWB
TOP
TP-G
FRONT
FRONT
CN2001
CN2002
CN2003
CN2008
FRONT
MAIN
PWB
AU
AU
DC
Q
SR
J
A
MAIN PWB MI-COM
DIST MODULE
PWB
Q
DEG
CRT
DY
DIGITAL IN
terminal
D

1-20 (No.52170)
4.5 BASIC OPERATION OF SERVICE MENU
4.5.1 TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
4.5.2 SERVICE MENU ITEMS
In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU.
4.5.3 BASIC OPERATION OF SERVICE MENU
(1) How to enter the SERVICE MENU
Before entering the SERVICE MENU, confirm that the
setting of TV/CATV SW of the REMOTE CONTROL UNIT
is at the "TV" side and the setting of VCR/DVD SW of the
REMOTE CONTROL UNIT is at the "VCR" side. If the
switches have not been properly set, you cannot enter the
SERVICE MENU.
a) Press the [SLEEP TIMER] key and set SLEEP
TIMER for 0 min.
b) Before disappear the display of SLEEP TIMER
settings, simultaneously press the [DISPLAY] key
and [VIDEO STATUS] key of the remote control unit.
c) The SERVICE MENU screen will be displayed as
shown Fig.1.
(2) SERVICE MENU screen selection
Press the [CHANNEL NUMBER] keys to select any of the
items (Fig.1).
(3) Enter any setting
• 1. PICTURE/ SOUND
a) Select 1.PICTURE/SOUND with the [CHANNEL
NUMBER] keys and press the [CH/] keys to
select the setting items. Then the screen will be
displayed as shown in figure in the sub sequentpage.
b) Then the settings or verifications can be
performed.
• Others
a) In order to select any of 2.YC SEP, 3.WHITE
BALANCE, 4.MEMORY SETUP, 5.RF AFC, 8.IP,
9.DSD and 0.HDMI, press the [Channel number]
keys from SERVICE MENU. The each screen will
be displayed as shown in the figure in the sub
sequent page.
b) Then the settings or verifications can be
performed.
(4) Setting method
a) [CH/] keys
Select the SETTING ITEM.
b) [VOL/] keys
Adjust the setting value.
c) [MUTING] key
Stored (memorized) the setting value.
d) [BACK] key
Return to the previous screen.
(5) Releasing SERVICE MENU
a) After returning to the SERVICE MENU upon
completion of the setting work, press the [BACK] key
again.
Fig.1
1.PICTURE / SOUND This sets the setting values of the VIDEO/ AUDIO and DEFLECTION circuits.
2.YC SEP This is used when the YC separation circuit is adjusted. [Do not adjust]
3.WHITE BALANCE This sets the setting values of the Low Light and High Light.
4.MEMORY SETUP This sets the setting values of the memory address. [Do not adjust]
5.RF AFC This is used when the IF VCO is adjusted. [Do not adjust]
8.IP This sets the setting value of the DIST process circuit. [Do not adjust]
9.DSD This sets the setting value of the DSD (Digital Super Detail) circuit. [Do not adjust]
0.HDMI This sets the setting value of the Digital input circuit. [Do not adjust]
1. PICTURE/SOUND
2. YC SEP
3. WHITE BALANCE
4. MEMORY SETUP
5. RF AFC
6.
7.
8. IP
9. DSD
0. HDMI
SERVICE MENU
VCR CHANNEL VCR / DVD
PREV NEXT POWER TV/VCR
INPUT1
INPUT4
INPUT3
DIGITAL-IN
THEATER
PRO
NATURAL
CINEMA
MUTING C.C.
C.C.
BACKMENU
CH
CH
VOL VOL
RETURN
VIDEO
STATUS
SLEEP TIMER DISPLAY SOUND
LIGHT
INPUT2
V1
V4
V3
D-IN
V2
/TV
OK
FREEZE SWAP
SPLIT POP
EZ SURF
INDEX
SELECT
TV CATV VCR
ASPECT
DVD
MULTI SCREEN
POWER
3
456
78
0
9
12
i
MEMORY key
(MUTING)
SLEEP TIMER
/ SKIP key
CHANNEL
NUMBER keys
TV/CATV
switch VCR/DVD switch
BACK key
MENU key
DISPLAY &
VIDEO
STATUS key
KEY FUNCTION of SERVICE MENU
/ key
Select item
/ key
Set value