LG LM-M1030A Service Manual page 17

• READING OK CHECK #D
(= "NO DISC" DISPLAY)
D D D D
DOES SP+ WAVEFORM APPEAR AT
( IC803 PIN12 AND PN802
PIN6)WAVEFORM #4
SPINDLE MOTOR DRIVE WAVE
YES
CHECK PN802 CONNECTOR LINE
YES
NO
DOES SPIN WAVEFORM
APPEAR AT( IC803 PIN 6)
WAVEFORM #4
SPINDLE DRIVE WAVE
NO
- 2-10 -
NO
DEFECTIVE IC801
DEFECTIVE IC803
NO
DEFECTIVE PN802
CONNECTOR
DEFECTIVE PICKUP
SPINDLE MOTOR