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QQ
3 7 63 1515 0
3.2.1 Feed section
Is the voltage output at
IC521 pin "40" 5V or 0V?
YES
Is 4V present at both
sides of the feed motor?
YES
Check the feed motor.
3.2.2 Focus section
3.2.3 Spindle section
TE
L 13942296513
Is the disk rotated?
YES
Does the RF signal
appear at RF test point?
YES
Is the RF waveform at RF
test point distorted?
YES
Proceed to the Tracking
section
3.2.4 Tracking section
When the disc is rotated
at first:
Is the tracking error signal
www
output at IC501 "11"?
.
Check IC541.
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NO
Is the wiring for IC561
pin 27?
NO
Is 6V or 2V present at
IC561 "4" and "5"?
Check IC501.
When the lens is
moving:
4V
Does the S-search
waveform appear at
IC561 pins "8" and "9"?
NO
Is 4V present at IC561
pins "6" and "7"?
Check the spindle motor
and its wiring
NO
Check the circuits in the
vicinity of IC561 "19"~
NO
"24" or the pickup
Check the circuit in the
YES
vicinity of IC501 pins
"2"~"12".
Approx. 1.2V
x
ao
u163
y
YES
i
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2 9
8
YES
Is 3.3V present at IC561
pin "20"?
NO
Check the vicinity of
IC521.
YES
Check the feed motor
connection wiring.
NO
NO
Check the circuits in
the vicinity of IC561
pins "8","9"and"15".
Check the pickup and
YES
its connections
NO
Q Q
Is 4V present at IC521
3
6 7
1 3
1 5
pins "41" ?
YES
Check the vicinity of
IC561.
YES
co
.
KD-SX745,KD-SX695
9 4
2 8
NO
YES
Check CD 8V
and 5V.
YES
NO
0 5
8
2 9
9 4
2 8
YES
Check IC521 and
IC561.
Check the pickup and
its connections
m
(No.49811)1-25
9 9
9 9
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