Samsung DVD-N501 Service Manual page 23

Abnormal rotation of
disc motor
No
Input of RF signal
is normal? (SIC1-15)
Yes
No
RIC1-70 output
SPD output is normal?
(SIC1-35)
Yes
After resoldering SIC1.
Check path to RIC1 and SIC1.
No
SIC3-2 output (FG)
Check SIC3 soldering and power.
is normal?
Yes
No
SIC3-9 signal
Check SIC1, MIC1.
MON is "H" ?
Yes
Check or replace disc motor.
No
RIC1-71 output
is normal?
Yes
Check RIC1 peripheral
circuit and A, B, C, D.
No
are normal?
Yes
Check RIC1 soldering and power.
Abnormal rotation of
disc motor
No
Input of RF signal
is normal? (SIC1-15)
Yes
No
RIC1-70 output
SPD output is normal?
(SIC1-35)
Yes
After resoldering SIC1.
Check path to RIC1 and SIC1.
No
SIC3-2 output (FG)
Check SIC3 soldering and power.
is normal?
Yes
No
SIC3-9 signal
Check SIC1, MIC1.
MON is "H" ?
Yes
Check or replace disc motor.
No
RIC1-71 output
is normal?
Yes
Check RIC1 peripheral
circuit and A, B, C, D.
No
are normal?
Yes
Check RIC1 soldering and power.