LG XC102 Service Manual page 45

1-1. OPEN CLOSE NG
Connector locking check (PN804)
Check power
supply circuit (PN805, CN806)
CN806 PIN1 : 12V, PIN2 : 6.3V
PN805 PIN8 : +5V_AD
Check voltage
change of OPEN CLOSE
IC803 INPUT voltage PIN6 : 12V,
PIN7:6.3V (PN805 PIN2 :
BTL_MUTE, 23 : OPEN,
22 : CLOSE)
Check voltage change LO+, LO- OF IC803
(PN805 PIN23 : OPEN, PIN22 : CLOSE)
YES
YES
YES
YES
NO
Defective main power supply
NO
Defective micom
NO
Defective IC803
Defective mechanism
4-2