Samsung DVD-709, Service Manual

Page: 89 / 179

Troubleshooting
7-12 Samsung Electronics
RGB output error at AV1
Output voltage at
pin in AV1 is in
1V ~ 3V?
RGB signal is
outputed at pin 23, 26,
29 in VIC50?
Check the pin 91 in FIC1 --> "H" state.
Check SCQ 11, 12, 17 circuit.
See "Video output error in RCA jacks"
Yes Yes
No No
R signal is
outputed normally at pin 15
in SCIC3?
Yes
No
RGB signal is
inputed at pin 1, 3, 13
in SCIC5?
Yes
No
RGB signal is
outputed at pin 4, 13, 15
in SCIC5?
Yes
Œ
Check the connection between
pin 23 in VIC50 and pin 2 in SCIC3. ´
Check the pin 9, 10, 11 in SCIC3
--> "L" state.
No
Œ
Check the connection between pin 5
in SCIC3 and pin 2 in SCIC5.
´
Check the connection between pin 26
in VIC50 and pin 13 in SCIC5.
ˇ
Check the connection between pin 29
in VIC50 and pin 3 in SCIC5.
No
Check the connection with
pin 10, 13, 15 in SCIC6.
Check the connection with
pin 4, 13, 15 in SCIC5.
Check pin 9, 10, 11 in SCIC5
--> "H" state
RGB signal is
inputed at pin 2, 4, 7
in SCIC6?
RGB signal is
outputed at pin 7, 11, 15
in AV1?
Yes
No
Yes
Check the SCART cable.
Change the SCART output in
setup menu to RGB.
S-Video output error at AV1
Y, C signals
are outputed at pin 15, 19
in AV1?
S-VIDEO signals
are outputed normally in the
UPPER jack?
Check the SCART cable.
Check the TV which is capable accept
S-VIDEO.
See "Video output error in RCA jacks"
No
Yes
No
Y, C signals
are inputed at pin 1, 13
in SCIC3?
Yes
No
Y, C signals are
outputed at pin 14, 15
in SCIC3?
Yes
No
Yes
Œ
Check the connection between
pin 27 in VIC50 and pin 13 in SCIC3.
´
Check the connection between
pin 24 in VIC5 and pin 1 in SCIC3. Check the pin 9, 10, 11 in SCIC3 --> "H" state.
See "CVBS output error at AV1"
and "RGB output error at AV1".
Change the SCART output in
setup menu to S-VIDEO.