Troubleshooting Guide; Check Of The Iic Bus Lines - Panasonic TX-P50VT30E 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
7.1.1.1. 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.
7.1.1.2. Self-check indication and forced to factory shipment setting:
Caution:
New key will be generated and previous TV programmes recorded in USB HDD will not be viewed. (See Chap.5)
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote con-
trol for more than 3 seconds.
7.1.2. Screen display
7.1.3. Check Point
Confirm the following parts if NG was displayed.
7.1.4. Exit
Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.
DISPLAY Check Ref. No.
TUN TU6775
STBY IC8000
MEM1 IC8902
MEM2 IC8901
AVSW IC3001
TEMP IC2001
LAN IC8601
SAT-TU TU6775
ID
ID2
LP1 IC9300
LP1 2ND IC9500
HDMI-SW IC4700
IRDRV IC5901
Description
TUNER A-BOARD
PEAKS-LDA3 (STM) A-BOARD
PEAKS EEPROM A-BOARD
STM EEPROM A-BOARD
AUDIO/VIDEO SW A-BOARD
TEMP SENSOR A-BOARD
ETHERPHY A-BOARD
SAT TUNER A-BOARD
A-BOARD
A-BOARD
LP1 A-BOARD
LP1 2ND A-BOARD
HDMI SW A-BOARD
IR LED DRIVER A-BOARD
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Check P.C.B.