LG GCE-8240B Service Manual page 54

Focus Actuator operating is
abnormal
Is there Focus
Search control signal input?
(IC501 pin 53)
YES
Is there Focus
Search drive voltage output?
(IC501 pin 45, 46)
YES
•
Check the connection of PN401 pin 1, 2.
•
Check the Pick-up Connector(PN401).
Replace the Pick-Up.
Spindle control is abnormal 1
(CD-ROM Disc)
Does FOCUS Servo
operate normally?
YES
Is there EFM signal input?
(IC201 pin 163)
YES
Go to "Spindle operating is
abnormal"
60
NO •
Check the connection of IC201 pin 207.
•
Check the communication line between
IC201 and IC301.
•
Replace the IC201 (OTI-9797).
Aren't
NO
MUTE1 signal "H" and
MUTE2 signal "H"?
(IC501 pin 22, 23)
YES
•
Replace the IC501(BD7902C).
NO
Go to "Focus Servo is unstable"
NO
Is there output normally?
(IC401 pin 71)
YES
Replace C223 and IC201
(OTI-9797)
NO •
Check the connection of IC201 pin
207.
•
Replace the IC201(OTI-9797).
NO
Replace the IC401(CXA2638R).