
- 5 -
Display method Display position
Hold [ ] (OFF TIMER) on the
remote control pressed and
press [VOL -] on the TV set.
(The reception screen switches
to TV monitor, and a screen as
shown on the right appears.)
When one of the buttons for
channel selection etc. is
operated, the display returns to
the normal screen.
When display is desired
To return to normal display
[VOL -]
[OFF TIMER]
Press simultaneously.
Operation panel in
the remote control
H10 UV OK
H30 AVSW OK
H36 IC301 OK
H91 IOA OK
H21 OK
H34 DG OK
H90 OK
H57
H58 H56 H55 H99
Magenta Green Yellow Red Blue
Display at the time of a fault
Operation part on the main unit
Panas
1 2
In regard to the self-check function
When phenomena like “the power fails from time to time” or “the video/audio fails from time to time” can not be confirmed at th
time of servicing, the self-check function can be used to confirm the occurrence and to limit the scope for the defective circuits.
Also, when “the power fails from time to time”, display of the color bar on the screen can be used confirm the occurrence and t
limit the scope for the defective circuits.
Display method and display position
isplay phenomenon and treatment method
Display
symbol Phenomenon, condition Treatment method
H10 No output of video and audio. Exchange the tuner (TNR001).
H21 Audio stop. Surround function not effective. Inspect the main board [A] IC2401 (audio compen-
sation).
H30 No video and audio. Surround function not effective. Inspect the rear terminal switching board [H]
IC3001.
H34 No video. No raster. Color stop. No color synchronization.
Wrong colors. Bad on-screen display. No horizontal/vertical
synchronization.
Inspect the digital core board [DG] IC6601.
H36 No video. Color stop. Wrong colors. Bad on-screen display.
No horizontal/vertical synchronization. Inspect the video signal processing board [AG]
IC301.
H55 The red bar is displayed momentarily and then the power is
interrupted. The power signal lamp (red) flashes three
times in intervals of 2.8 sec.
Detection of overcurrent (140V line), vertical out-
put.
Detection of 25 V line overcurrent, 25V line.
H56 The yellow bar is displayed for 0.5 sec., and then the power
is interrupted. The power signal lamp (red) flashes twice in
intervals of 3.3 sec.
“Power failure from time to time” because of the
overcurrent (140V line), vertical output (+15V line).
H57 The green bar is displayed for 1 sec., and then the power is
interrupted. The power signal lamp (red) flashes once in
intervals of 3.8 sec.
“Power failure from time to time” because of the
overcurrent (140V line), vertical output (+15V line).
H58 Abnormal power circuit. The power does not come up, and
it is switched off after a few seconds. Inspect the main 5V line.
H90 The memory gets lost. Exchange the main board [A] IC1114 (memory).
H91 One horizontal line is not obtained at the time of servicing. Inspect the main board [A] IC1201 (expansion
DAC).
H99 “No video from time to time” because of causes in the
antenna~tuner~video circuit.
*This also may be displayed when the antenna plug is dis-
connected or when a channel without a signal is received.
Inspect the tuner~video circuit.
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