Troubleshooting Guide; Check Of The Iic Bus Lines - Panasonic TH-75GX880K Service Manual

TH-75GX880K

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

How to access
7.1.1.
7.1.1.1. Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [BLUE] 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 USB HDD
Recording)
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. Screen display
7.1.3. Check Point
Confirm the following parts if NG was displayed.
DISPLAY Check Ref. No.
H14TUN IC6950
H38FRC IC9000
H07TEMP IC5912
H17LAN IC8000
H00FE IC6808
H96ID
H97ID2
H45BT
H42WiFi
H21DSP IC3400
7.1.4. 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.
Example:
Description
TUNER
FRC
TEMP SENSOR
ETHERNET
DEMODULATOR
ID
ID2
BLUETOOTH
WiFi
AUDIO DSP
Check Point
A-BOARD
A-BOARD
A-BOARD
A-BOARD/LAN
A-BOARD
A-BOARD
A-BOARD
A-BOARD/BLUETOOTH
A-BOARD/WiFi
A-BOARD
18
Remarks