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