THOMSON 42WS90E3, Service Manual

Page: 15 / 24

First issue 04 / 01 15
Synchronisation
trouble
No
Yes
No
Yes
No
Yes
No
Yes
Yes No No
Yes
Failure in the PDP module
No
Yes
Is 5Vp-p available at Pins 77,
78 and 79 of AD connector?
No
Yes
No
Yes
No
Yes
No
Yes
Failure in the AD connector
or MAIN module
Replace AD connector
Replace MN connector
Replace HD connector
Replace the MAIN module
Replace the MAIN module
Replace the VIDEO module
Replace the VIDEO module
Failure in the
MAIN module
Failure in the
MAIN module
Is 3Vp-p available at Pins 115
(HSYNC) and 116 (VSYNC)
of IC8501 (MAIN module)?
Is 3Vp-p available at Pins 39,
213, 42 and 212 (VSYNC) and
215 (CLOCK)of AD connector?
Are horizontal and vertical syn-
chro. signals of 5Vp-p available at
Pins 9 and 10 of MN connector?
Are horizontal and vertical syn-
chro. signals of 5Vp-p available at
Pins 7 and 8 of MN connector?
End
End
End End
End
End
Is the display normal?
Is the display normal? Is the display normal?
Is the display normal? Is the display normal?
Is the display normal?
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