Zenith XBR413 - Page 80

3-105
Recognition Fail Case 1:
CD-ROM Fail
Check pick-up read power
is 0.9~1.3mW?
Go to “LD CHECK”.
Go to “Focus Servo is unstable”.
Replace the IC107
Go to “Tracking Servo is unstable”.
•Check the pick-up FFC and CN101.
•Replace the pick-up unit.
Does focus servo
operate normally?
Check pick-up
RF signal IC107(Pin115)
RFO(TP115)is
500~1000mVpp?
Check RFEQO waveform
(IC107 Pin 99)is
800~1200mVpp?
Check after replacing IC202.
Is it OK?
OK
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES