Harman Kardon CDR20 Service Manual page 29

CDR20
Focus Actuator operating
is abnormal
Is there
Focus Search control signal
input? (IC510 pin 3)
YES
Is there Focus Search
drive voltage output?
(IC501 pin 13,14)
YES
•Check the connection of PN401 Pin 1,4.
•Check the Pick-up Connector(CN401).
Replace the Pick-Up.
Spindle control is abnormal 1
(CD-ROM DISC)
Does FOCUS Servo
operate normally?
YES
Is there RFAC signal input?
(IC201 pin 163)
YES
Go to "Spindle operating is
abnormal"
•Check the connection of IC201 pin207.
NO
•Check the communication line between
IC201 and IC701
•Replace the IC201(OTI-9790)
NO
Is Act_Mute signal "L"?
(IC501 pin 9)
YES
Replace the IC501(BA5983).
NO
Go to "Focus Servo is unstable"
NO
Is there a output normally?
(IC401 pin 71, 72)
YES
Replace the IC413(EL2245).
29
harman/kardon
•Check the connection of IC701
NO
pin26.
•Replace the IC701(MICOM)
NO
Replace the IC401(CXA2551R).