LG GCE-8240B Service Manual page 56

RF output is abnormal
Is there
PICK UP (A, B, C, D)
output normally?
(PN401 pin 7, 8, 15, 16)
YES
Is RRF
signal output normal?
(IC401 pin 85)
•
First Recognition try: Over 1.8 Vpp
•
Second Recognition try:
Over 0.9 Vpp
YES
OK
Focus Servo is unstable
Is FE signal
output normal in Focusing
Up/Down?
(IC401 pin 59)
YES
Is FEO signal
output normal in Focusing
Up/Down?
(IC201 pin 207)
YES
Go to "Focus Actuator
operating is abnormal"
62
NO
•
Check the PICK UP FFC.
•
Replace the PICK UP.
No
•
Check the connection between
PN401 and IC401.
•
Replace the IC401(CXA2638R).
NO
Check the IC401(CXA2638R).
Go to "RF output is abnormal"
NO
Replace the IC201(OTI-9797).
Go to "Laser is abnormal"
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