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Troubleshooting
Abnormal rotation of
Input of RF SUM
signal is normal?
(ZIC1-172, 173)
SPD output is normal?
FIC1-25 output
FIC1-23 signal
Check or replace disc motor.
5-6
disc motor
No
(SPD Waveform)
Yes
No
(ZIC1-189)
Yes
Check ZIC1 peripheral circuit.
No
is normal?
Yes
No
MON is "H" ?
Yes
RIC1-54, 55 output
is normal?
Yes
Check path to RIC1 and ZIC1.
Check FIC1 soldering and power.
Check ZIC1.
No
Check RIC1 peripheral
circuit and A, B, C, D.
Samsung Electronics
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