21
TROUBLESHOOTING HINTS
7. No video
No video
OK
Check the LCD panel or
41 pin cable
White
Trouble connection.
NO
YES
OUT1 41 pin cable
connection check.
NO
Trouble connection.
NO
YES
U8 #2 pin
output 12V check?
YES
YES
LVCC 3.3V check
No raster
NO
YES
Is OSD normal?
Change the contrast
control value to maximum
NO
YES
Are the contrast
controls maximum?
NO
YES
YES
Are the output
signal of the MX88281?
Change the main B'D
(Trouble in the TDA8752)
Change the main B'D
(Trouble in the TDA8752)
NO
YES
Are the video
signal and output signal
of the TDA8752?
Black
Содержание L500B
Страница 1: ...ServiceManual TFT LCD MONITOR Model L500B DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT...
Страница 24: ...25 SCHEMATIC DIAGRAM u MAIN88281A...
Страница 25: ...26 SCHEMATIC DIAGRAM u TOP CIRCUIT...
Страница 26: ...27 SCHEMATIC DIAGRAM u BUFFER...
Страница 27: ...28 SCHEMATIC DIAGRAM u POWER DC DC...
Страница 28: ...29 SCHEMATIC DIAGRAM u MEMORY...
Страница 29: ...30 SCHEMATIC DIAGRAM u MICOM...
Страница 30: ...31 SCHEMATIC DIAGRAM u RGB SYNC...
Страница 31: ...32 SCHEMATIC DIAGRAM u TDA8752A...
Страница 32: ...33 EXPLODED VIEW MECHANICAL PARTS LIST...
