Samsung SV-DVD1EA Service Manual page 34

No pick-up home positing
(DVD Section)
No
SLD, SIC1-34
output is normal?
Yes
LED+, SLED-
No
SIC3-32, 33 output are
normal?
Yes
Check the Sled Motor and connection
Check MIC1
Check SIC3
NO LD CD ON (DVD Section)
D
No
RIC1-21 is 5V?
Yes
Divide RQ1 emitter terminal
voltage and 5V real voltage
difference into 10ohm.
Yes
No
Current exceeds 0.1A?
Yes
LD out pick-up replace.
Check MIC1
Open check in related circuit.