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Level 3 Repair
Stereo Headset Working
Hands-free stereo
headset
NG
Button NG?
NO
MIC NG?
NO
SPK NG?
NO
The End
YES
YES
YES
Change Main PBA
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Check U501
NO
Check
L500
YES
Resolder L500
Signal on
YES
in C506,
C510?
NO
YES
Signal on
in C408
C409?
NO
8-18
Check U501
Check L504, L505,
HDC500
Check R407, R408,
U401
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