LG FA162 - Page 34

3-15
ELECTRICAL TROUBLESHOOTING GUIDE OF AUDIO PART
No FL+/ FL-
Check 3.7 V output & P_CTRL.
Replace D950.
Replace R950.
Check soldering
connector PN901.
Is the P_CTRL OK?
D950 normal?
R950 normal?
NO
NO
NO
YES
YES
YES
YES
No AMP output
Check 3.7 V.
Replace D906, R910, C915.
Replace D955.
Check soldering
connector CN901.
Is the Vcc
supplied to IC902
Pin7?
D955 normal?
NO
NO
NO
NO
Is the P_CTRL OK?
D906, R910,
C915 normal?
YES
YES
YES YES
YES