Service manual

Troubleshooting
5-14 Samsung Electronics
NO LD CD ON
RIC1-21 is 5V?
Current exceeds 0.1A?
LD out pick-up replace.
Open check in related circuit.
Check MIC1
Yes
Yes Yes
No No
Divide RQ1 emitter terminal
voltage and 5V real voltage
difference into 10ohm.
D
(DVD Section)
No pick-up home positing
SLD, SIC1-34
output is normal?
Check the Sled Motor and connection
Check MIC1
Yes
No
LED+, SLED-
SIC3-32, 33 output are
normal?
Check SIC3
Yes
No
(DVD Section)