JVC KD-AR470 Service Manual page 18

5.2.3 Spindle section
Is the disk rotated?
NO
Is the voltage output at
pin 6 and pin 7 of IC501?
NO
Is the voltage input at pin
17 of IC501?
NO
Is the voltage output at pin
41 of IC541?
NO
Is the power supply
present at pin 6, pin 15,
pin 25, pin 39, pin 43,
pin 51 and pin 64 of IC541?
NO
Check the connections
of CD8V power supply.
5.2.4 Tracking section
1-18 (No.MA232)
YES
Does the RF signal
appear at TP RF?
YES
Check the spindle motor
and its wiring.
Is the power supply
YES
present at pin 3, pin 12
and pin 21 of IC501?
NO
Check the connections
of CD8V power supply.
Check the connections
YES
between IC501 and
IC541.
YES
Check IC541.
When the disc is rotated
at first:
Approx. 1.2V
Is the tracking error
signal output at pin 11
of IC521?
NO
Check the circuits in
IC521 or the vicinity
of IC521.
NO
Replace IC521 or repair
the malfunction
connection point
YES
Is the RF waveform
at TP RF distorted?
NO NO
Check the circuits in
the vicinity of IC601
or the pickup.
YES
Check IC501.
YES
Check IC521.
YES
Check the pickup and
its connections.
YES
Proceed to the Tracking
section