(No.MA232)1-17
5.2
Trouble shooting (For KD-G521 and KD-G527)
5.2.1 Feed section
5.2.2 Focus section
Check the feed motor.
Is 4V present at both
sides of the feed motor?
YES
NO
Is the voltage output at
pin 4 and pin 5 of IC501?
Is the power supply
present at pin 3, pin 12
and pin 21 of IC501?
Check the connections
between the feed motor
and IC501.
YES
NO
Is the voltage input at pin
27 of IC501?
YES
YES
Check IC501.
NO
Check the connections
of CD8V power supply.
NO
Is the voltage output at pin
40 of IC541?
Check the connections
between IC501 and
IC541.
YES
NO
Is the power supply
present at pin 6, pin 15,
pin 25, pin 39, pin 43,
pin 51 and pin 64 of IC541?
YES
Check IC541.
NO
Check the connections
of CD8V power supply.
When the lens is
moving:
Does the S-search
waveform appear at
IC501 pins 8 and 9?
4V
Check the pickup and
its connections.
YES
NO
Is the voltage input at pin
15 of IC501?
YES
NO
Check the connections
of CD8V power supply.
NO
Is the voltage output at
pin 33 of IC541?
NO
YES
Check the connections
between IC501 and
IC541.
YES
Check IC541.
NO
Check the connections
of CD8V power supply.
Is the power supply
present at pin 6, pin 15,
pin 25, pin 39, pin 43,
pin 51 and pin 64 of IC541?
Is the power supply
present at pin 3, pin 12
and pin 21 of IC501?
YES
Check IC501.