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Check Speaker tension and
Contacts are clear.
Input Signal (
TP2) is Low(0V)?
No
Check the soldering status
Of U303 of main -board
Output Signal(
TP4) is Low(0V)?
No
Receiver Signal(
TP6) High(1.6V)?
Replace Main PCB
Assemble
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Only for training and service purposes
Yes
TP1,
Replace Main Board
Yes
Replace U303 of
TP3,
TP5,
Replace Receiver
main -board
- 77 -
5. Trouble shooting
TP4
TP3
TP4
TP3
TP5 TP6
LGE Internal Use Only
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Table of Contents
Troubleshooting
