Samsung DVD-R155 Service Manual page 26

Trouble Shooting
CVBS (Video) output error
A
about 1Vp-p appears at
Normal(5v) at VIC1[pin1]?
About P-P1V appears at
5-4
Video signal of
pin 17 of IC216.
Yes
Analog signals
are Inputted normally
VIC1[pin4]
Yes
Power is
Yes
Pin5 in VIC1 is
In high state?
Yes
Video signal of
Output Jack?
Yes
Check the RCA Cable
No
Check the DIC1 on MAIN PCB
No
Check the connection between
10Pin in CN3 Of JACK PCB and VIC1
No
Check the connection between
VIC1[pin1] and Power line (VL6, PPIF1).
Check the connection between
No
VIC1(PIN5) and IC601(PIN89).
Check VIC1 peripheral circuit.
# IF Recorder is under PSO (progressive scan output) MODE, it does
not output the CVBS& S-Video signal.
No
Check the connection between
VIC1 and output jack.
CVBS(Color-bar) (Pin17 of IC216)
Samsung Electronics