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Mi TROUBLESHOOTING
GUIDE
Does the test
disc rotate?
NO
YES
Does "PLAY" appear
on the display?
Playing time appear on the display
Are there outputs
at pins ©, @ and @
of 1C302?
NG
@® LRCK
@ BCLK
OK
@ SRDATA
Are there outputs
at pins © and @
of 1C801 or
|C802?
NO
1C302~364
or 1C307 failure
OK
"H""
Check IC601
Are there outputs
at pins © and @
OK
of 1C807 or
IC808
NO
(C811, 10812,
1C803~806,
(C809, 1C810,
RLY871, RLY872,
JK871 or JK872
RLY801 or JK801
faiture
failure
Below 700 mV
or no output
Check output at
pin @ of CN102
(ARF)
At about 1 Vp-p
Is pin @ of 1IC301
at "HIGH" or "LOW?
(CLVS)
Is pin @ of
1C301 at "HIGH"
or "LOW"?
(D MUTE)
Is there an output
at pin @ of 10102?
(KICK)
1C301 failure
OK
"pn
No waveform or upper and
f a
lower amplitudes are
not equal.
Check pin @
of IC101. (FE)
Upper and lower
amplitudes of
waveform are equal
is pin @ of 1C102
at "HIGH" or "'LOW'2,
(TRON)
ts pin @ of 1C102
at "HIGH" or "LOW?
(TLOCK)
R114 failure
1C102 failure
10301 tar
Remains at
1C301 or 1C401
1102 failure]
| cir"
Remove the test disc
Push the open/close det.
switch (S751)
Optical pickup
across R101.
Load the
test disc
Push the open/close det.
switch (S751)
NG
In there an output
at pin @ of 1C1027
(FOD)
Above 0.5V
Optical pickup
OK
failure
"H"
Check pin @ of
1C101.
Above 0.6 V
(RF DET)
Changes from
"Hy"
to
a
Cease
Remains at
"H"
Check pin @ of
CN102
(FLOCK)
Changes from
"H" to"L".
SL-P2000
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