LG LPC-LM440A/X Service Manual page 17

READING OK CHECK #D(="NO DISC "DISPLAY)
D
DOSE SP+WAVEFORM
APPEAR AT(IC802 Pin11)
SPINDLE MOTOR DRIVE WAVE
YES
CHECK PN802
CONNECTOR LINE
NO
DOSE SPIN WAVEFORM
APPEAR AT (IC802 Pin6)
SPINDLE DRIVE WAVE
NO
NO
- 2-8 -
NO
DEFECTIVE IC801
NO
DEFECTIVE IC802
DEFECTIVE PN802
CONNECTOR
DEFECTIVE PICK-UP
SPINDLE MOTOOR