LG CED-8042B Manual page 56

Spindle Control is abnormal 3
Is IC555 pin 5 "L"?
(DMCON)
NO
C
Go to <Picture 6>
Spindle Control is abnormal 4
Is Spindle drive
YES
voltage output
(IC556 pin 7)
NO
Is Spindle drive
voltage output normal?
(IC209 pin 8 MPWM)
NO
Is there normal input to
IC209 pin 174
(WBLIN) ?
NO
Is IC601 pin 22 (ATFG) output
normal?
NO
Is IC601 pin 46 (ATFM) output
normal?
NO
D
YES
A
YES
Check the peripheral circuit of
IC556. If it's OK, replace IC556
(NJM2100M).
YES
Check the peripheral circuit of
IC209. If it's OK, replace IC209
(RL5E808B).
YES
Check PCB between
IC209 and IC601.
YES
Replace IC601 (AK8563).
63