Pc Image Is Normal But Color Monitor Picture Is Ng (When The Power Indicator Is Lit) - Sony SNC-Z20N Service Manual

3-3. PC image is normal but color monitor picture is NG
(When the POWER indicator is lit)
Are CN503 and
FB501 on the CT-229 board
correctly soldered?
Is
the flexible
flat cable (21-pin)
correctly connected to CN804
(SY-310 board) and CN903
(camera module
board)?
Is the video signal
normally output from camera
module board to pin 2 of CN804
on the SY-310
board?
Replace the camera
module.
SNC-Z20N/Z20P (E)
No
Yes
No
Connect the flexible
Yes
flat cable (21-pin)
correctly.
Yes
No
normally input to pin 2 of CN702
Solder the parts that are
not correctly soldered.
Is the video signal
on the SY-310 board?
Yes
Are FB501 and
CN503 on the CT-229 board
correctly soldered?
Yes
Replace the CT-229
board.
(Failure of FB501)
No
Replace the SY-310
board.
(Pattern is broken between
CN804 and CN702.)
No
Solder the parts that are
not correctly soldered.
3-3