Cd Part Electrical; Electrical Troubleshooting Guide; Cd Part Troubleshooting - LG MCV902 Service Manual

SECTION 4 CD PART ELECTRICAL

ELECTRICAL TROUBLESHOOTING GUIDE

1. CD PART TROUBLESHOOTING

TURN ON CD
OPEN CLOSE CHECK
"READING"
DISPLAY CHECK
READING OK CHECK
IF PLAY, AUDIO
OUTPUT CHECK
OK
YES
YES
YES
YES
YES
NO
CONNECTOR CHECK (PN803, PN804)
CHECK VOLTAGE CN806
PIN1 : 12V, PIN2 : 6.3V
CHECH VOLTAGE PN805
PIN22 : CLOSE, PIN23 : OPEN
NO
CONNECTOR CHECK
(PN802, PN803, PN804, CN806, PN814)
CHECK MICOM INTERFACE CIRCUIT (PN805)
(CE, BTL-MUTE, CD-IN, CD-UT, CLK, WRQ, FSEQ)
NO
CONNECTOR CHECK (PN801, PN802)
CHECK PICKUP MOVEMENT
CHECK AM5810FP (IC802)
CHECK LC78692 (IC801)
CHECK CN806 AUDIO SIGNAN CHECK
NO
PIN6 : L_Ch (IC801 PIN76 : LCHO)
PIN8 : R_Ch (IC801 PIN78 : RCHO)
4-1
NO
NO
NO
NO
NO
NO