Kortek KT-LL84ULFX-PD Service Manual page 17

Check connections of Vby1
cable between A/D board and
Panel
OK
Replace the A/D B/D.
NG
Replace the POWER-B/D.
NG
Replace the LCD panel.
REV 0.1
1
Check the voltage for BLU-
ON/OFF-signal(9
at PWR B/D)
NG
Replace the A/D B/D
NG
Please see the attached *PHOTO-1 for the
detail-cable-route
OK
OK
It is very difficult to replace the panel to fix the failing
*
system(monitor), so please choose an replacement of
the panel with last way.
OK
2
Normal voltage at power-
*
on: 2V~4V
th
pin of CN4B
OK
Connect the Vby1 cable correctly.
END
Service Manual
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