LG CED-8042B Manual page 55

Disc Recognition is abnormal.
Is IC205 pin 19 "H" ?
(CDR/RW)
NO
C
Do RECD1, RECD2
signals input to IC202 pin 48, 49
normally?
NO
Does IC601 pin 26, 27 output
normally?
NO
Is there normal input to
IC601 pin 62?
YES
Replace IC601(AK8563).
Go to <Picture 4>
62
YES
Check the circuit related with
CDR/RW signal.
YES
Replace IC202 (MICOM).
YES
Check the cold soldering for the
R661, R668, R644, R645.
NO
Check the cold soldering for the R675,
C644 and IC601 pin 62.
B
Check IC601 pin 63 (RRF output)
Requirement:
First Recognition try : Over 1.5Vpp
Second Recognition : Over 1.0 Vpp
Satisfy?
NO
Is Laser Power output normal?
First Recognition try : 1.0 mW
Second Recognition try : Over 1.2 mW
YES
Go to "RFDC OUTPUT is abnormal"
Normal?
NO
Repair related part.
YES
Replace IC202 (MICOM).
NO
Go to "Laser is abnormal"
YES
B