Samsung DVD-SR150M, Service Manual

Page: 42 / 120

Trouble Shooting
4-20 Samsung Electronics
Refer to wave pattern image of Fig. 4-14
Refer to wave pattern image of Fig. 4-14
Refer to wave pattern image of Fig. 4-15
Refer to wave pattern image of Fig. 4-15
AV2 (RGB) Input Error
Video signal of
about 0.7V appears at input jack?
(28, 32, 36pin of AV2)
Check the Scart cable
No
Yes
RGB control
signal level is 4V at 37pin of
SJACK (AV1JACK)?
Check Main PCB
Check Video out of TV is set RGB
mode
No
Yes
Power 5V is nomal
at IC216(pin30, 34)
Check the SMPS(AL5.8V)
and PCN1 (10,11)
No
Yes
Yes
CN3 pin (14,16,18)
of Jack PCB or CON2 of Main PCB
has normal level?