Samsung DVD-P380 Service Manual page 32

Trouble Shooting
4-
FINE SEEK Check
ZIC- (RF)
output is normal ?
Yes
MIC
- ,  (T+,T-)
Terminal outputs are
normal ?
Refer to a pattern
Yes
image of Table 4-4
Check DCN and P/U
No
Check RFSUM input from P/U.
No
Check MIC peripheral circuit
Samsung Electronics