Service Manual
REV 0.1
17
Replace the LCD panel.
OK
Check connections of Vby1
cable between A/D board and
Panel
Connect the Vby1 cable correctly.
NG
NG
Check the voltage for BLU-
ON/OFF-signal(9
th
pin of CN4B
at PWR B/D)
Replace the A/D B/D
1
3
2
OK
END
OK
OK
OK
NG
NG
*
Normal voltage at power-
on: 2V~4V
*
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.
Please see the attached *PHOTO-1 for the
detail-cable-route
Replace the A/D B/D.
Replace the POWER-B/D.
Summary of Contents for KT-LL84ULFX-PD
Page 2: ...Service Manual REV 0 1 2 REVISION HISTORY REVISION DATE NOTE REV0 1 Jun 06 2015 1st issued ...
Page 24: ...Service Manual REV 0 1 24 2 8 No Speaker out from internal speakers ...
Page 25: ...Service Manual REV 0 1 25 2 9 The fault of Remote control ...
Page 26: ...Service Manual REV 0 1 26 2 10 The fault of Key control pad ...
Page 27: ...Service Manual REV 0 1 27 2 11 Image overlap focus or flicker ...
Page 28: ...Service Manual REV 0 1 28 2 12 Brightness defect ...
Page 33: ...Service Manual REV 0 1 33 3 2 Front disassembly 3 2 1 Remove bolts Remove FRONT cover ...
Page 36: ...Service Manual REV 0 1 36 ...
Page 46: ...Service Manual REV 0 1 46 2 Part number 109273 SUB SMPS CN7 AD B D W205 ...
Page 47: ...Service Manual REV 0 1 47 3 Part number 109272 Main SMPS CN4B SUB SMPS CN8 AD Main W200 ...
Page 48: ...Service Manual REV 0 1 48 4 Part number 109271 AD Main W804 5 Part number 109270 AD Main W803 ...
Page 49: ...Service Manual REV 0 1 49 6 Part number 109269 ...
Page 50: ...Service Manual REV 0 1 50 6 Part number 107545 Main SMPS CN4A SUB SMPS CN3 ...
Page 51: ...Service Manual REV 0 1 51 7 Part number 107542 OSD KEY ...
Page 52: ...Service Manual REV 0 1 52 8 Part number 110383 ...
Page 54: ...Service Manual REV 0 1 54 10 Part number 107536 SMPS Converter 11 Part number 107535 ...
Page 55: ...Service Manual REV 0 1 55 12 Part number 108481 ...
Page 56: ...Service Manual REV 0 1 56 41p 13 Part number 108482 ...
Page 64: ...Service Manual REV 0 1 64 10 2 Packaging 10 2 1 Unpacking ...