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4 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 the
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 on the screen can be used to confirm the occurrence and to limit the scope for
the defective circuits.
Any programmed channels, channels caption data and some other user defined settings will be erased and return to factory setting.
4.1.
How to access
4.1.1.
Access
Produce TV reception screen and, while pressing [VOLUME-] button on the main unit, press [SLEEP] button on the remote
controller unit simultaneously.
4.1.2.
Exit
When one of the buttons for channel selection etc. is pressed, the display returns to the normal screen.
4.2.
Screen display
4.3.
Display phenomenon and treatment method
Display symbol
H10
No output of video and audio.
H21
No audio output. Surround function not effective.
F30
No video and audio output. Input switching disabled.
H34
Black and white stripes pattern. Enhanced back light.
H35
No video
H36
No video
H90
Power interrupted with self-check.
* Any button operation or switching off the power will reset the self-check data.
Phenomenon/condition
5
Treatment method
Replace tuner (TNR001A (B-BOARD)).
Replace IC2300 (AP-BOARD).
Replace IC3000 (AP-BOARD).
Replace IC4003 (DG-BOARD).
Replace IC6400 (DG-BOARD).
Replace IC6300 (DG-BOARD).
Replace IC1002 (DG-BOARD).
CT-L1400
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