Protection Error - LG SN8YG Service Manual

3. PROTECTION ERROR

No display or No Sound.
3-1. D(DC) PROTECTION
3-1-1. Solution
Replace AMP board.
3-1-2. How to troubleshoot (Countermeasure)
1) Check DC voltage of speaker out FL+/- & Top L+/- (CN703 pin1, 2, 3, 4), C+/- (CN702 pin1,2),
FR+/- & TOP R+/- (CN704 pin1, 2, 4, 5).
3-1-3. Service hint (Any picture / Remark)
CN703 CN703
ONE POINT REPAIR GUIDE
< AMP board top view >
CN702 CN702
3-12
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CN704 CN704
CN702 CN702
CN703 CN703
CN704 CN704
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