Troubleshooting Guide; Check Of The Iic Bus Lines - Panasonic TC-L42E60 Service Manual

7 Troubleshooting Guide

Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
7.1.

Check of the IIC bus lines

7.1.1. How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote
control for more than 3 seconds.
7.1.2. Exit
Disconnect the AC cord from wall outlet or press the [POWER] button on the main unit for 3 seconds to turn off and then turn on
automatically.
7.1.3. Screen display
7.1.4. Check Point
Confirm the following parts if NG was displayed.
DISPLAY Check Ref. No.
H14TUN IC6750
H90STBY IC8000
H91MEM2 IC8900
H17LAN IC8000/JK8650A
H96ID
H97ID2
H42WIFI IC8000/A20
Description Check Point
TUNER A-Board
STBY A-Board
NAND FLASH A-Board
LAN A-Board
ID A-Board
ID2 A-Board
WiFi A-Board/WiFi
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