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3. Troubleshooting Flow Chart
13
START
Power on
Does Backlight
power on?
N
Y
Does Remote
Control work?
N
1. Check connection between Remote Board and Main Board
2. Check ATMAGE8 pin 23
3. Check the remote receiver and transfer circuit
Y
1. Check connection between Power Board and LCD Module
2. Check Main Board J32 Backlight Control
Does OSD
appear?
Y
N
1. Check LVDS connector
Does the TV
display signals?
N
Y
1. For Tuner sources, verify the cable has signal and has a
good connection to the TV
2. For other sources, check the jack for damage
3. Check switch chip FSAV330, FSAV331 relevant circuit
4. For Y/Pb/Pr, RGB, Y/C check MST9883 signal output and
input circuit
Does sound
play as
expected?
N
1. Check cable connections including internal COAX pin
2. Check AMP TDA8932 circuit
3. Check switch chip CD4052 relevant circuit
4. Check AP8206 relevant circuit
5. Check mute control between ATMAGE8 and AMP
Does LED
change color?
Y
N
1. Check connection between Power Board and Main Board
2. Check Power Board output voltage
A
Perform Auto
Channel Search
from the OSD
Y