8 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 “POWER” indication (red) at the front of the unit can be used to narrow down the +B
line.
8.1. How to access
8.1.1. Access
Produce TV reception screen and, while pressing [VOLUME-] button on the main unit, press [SLEEP] button on the remote
controller unit simultaneously.
8.1.2. Exit
When one of the buttons for channel selection etc. is pressed, the display returns to the normal screen.
8.1.3. Screen display
Display Ref.No. Description Board
H10UV TU3000 TV Tuner DT-Board
H11BSD IC8211 Front Processor DT-Board
H12BSD IC8240 HDMSL PEAKS_Lite DT-Board
H21SND IC2608 BBE Viva H-Board
H30AVSW IC2602 Video SW H-Board
H31AVSW IC2605 Audio SW H-Board
H34DG IC4026 GC4PRO DG-Board
H36DG IC4018 10Bits A/D DG-Board
H49HDMI IC5003 HDMI I/F Reciever DV-Board
H90MEM IC4008 EEPROM DG-Board
H95RTC IC9007 Ex. I/O D-Board
19
TH-42PD50U
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