CT-34WDM60 — Panasonic TV Service Manual (repair manual). Page 5

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Self-check Function
When symptoms like "the power fails sometimes" or "sometimes there is no picture and/or sound" can not be confirmed at the
time of servicing, the self-check function can be used to confirm the occurrence and to find the defective circuit.
In case of "power failure", flashing of the "VIDEO IN" indication (red) at the front of the unit can be used to narrow down the +B
line.
Self-check of the microcomputer control system (bus line)
Indication method
Screen display
<Indication method>
Input a 1080i signal or NTSC Sig-
nal, press the SLEEP button on 
the remove control 
simultaneously with the 
"VOLUME -" button on the unit.
(The display will be switched to 
the screen of VIDEO 1 and the 
screen shown on the right will be 
displayed.)
<Return to the normal screen>
Return to the normal screen will
be made by POWER or any other
remote control operation.
ASPECT INPUT
VOLUME
[ VOLUME    ] Button
[SLEEP]
Button
POWER GAME INPUT
RECALL
MUTE
SLEEP
POWER SAVE
VOL
ASPECT
SELF ASPECT
CT-34WDM60
OK H49
HM IC8618
IIC/1
IIC/2
Check result of IC
"OK"
Normal
"NG"
Abnormal
(Check IC or its nearby components)
OK H30
J/IC4001
OK H32
/IC4007
OK H14
A/IC3061
OK H94
DP/IC5607
OK H92
GY/IC5203
OK H38
X/IC2601
OK H21
Z/IC2401
OK H50
F/IC402
OK H44
IC5706
OK H93
IC5205
OK H34
IC2701
OK H51
IC604
OK H45
IC5712
OK H36
IC5204
OK H46
IC5208
OK H37
IC2702
OK H52
IC610
OK H39
IC4002
OK H33
IC4008
OK H90
IC3071
OK H31
IC4003
ID
Display Contents
Indication 
No.
Symptom, status
Treatment method
Applicable  Board, 
applicable Module
H14
BBE and LED does not work.
Exchange IC3061.
A-Board
H90
Picture and/or sound can not be adjusted.
Exchange IC3071.
H21
No sound
Exchange IC2401
Z-Board
H30
Video input is not possible.
Module exchange
J-Module
H31
Video input is not possible.
H32
No sound and No picture
H33
No video from component (color difference) input
H39
Sound switching is not possible.
H34
No video, defective OSD
Module exchange
X-Module
H37
Defective OSD
H38
No video, defective OSD
H36
The NTSC signal is displayed, but the 1080i signal is not
displayed.
Module exchange
DP-Module
H44
H45
H94
H46
No NTSC video
Module exchange
GY-Module
H92
H93
H49
Synchronization not possible
Module exchange
HM-Module
H50
Horizontal and vertical synchronization not stationary
Exchange IC402.
F-Board
H51
Earth magnetism compensation does not operate.
Exchange IC604.
H52
The servicing item "distortion correction" does not operate.
Exchange IC610.
!"#$
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