Power On Error (3.3 Va, 3 V) - LG SJ9 Service Manual

3. POWER ON ERROR (3.3 VA, 3 V)

MAIN SoC IC supply voltage check points
3-1. 3.3 VA
1) Check 3.3 VA at WL613 nearby WIC609.
2) Check 3.3 VA at pin7, 8 of WIC603.
3) Check 3.3V_PWM at WL611 nearby WIC608.
4) Check 3.3V_PWM at WL615 nearby WIC601.
If all voltages are OK, then check the PVDD voltage of woofer SMPS board.
3.3 VA 3.3 VA
at pin7, 8 of WIC603 at pin7, 8 of WIC603
ONE POINT REPAIR GUIDE
3.3V_PWM 3.3V_PWM
at WL611 at WL611
3.3 VA 3.3 VA
at WL613 at WL613
< Woofer AMP board top view >
3.3V_PWM 3.3V_PWM
at WL615 at WL615
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