Dell 320-7459 - S1909WXF - 19" LCD Monitor, Руководство по обслуживанию

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Service Manual
33
Backlight on, key function and LED accurate indication ok but no picture
Backlight on, key function and LED
accurate indication ok but no picture
Is there R.G.B signal in
U104 #59, #56 #54?
Is the panel enable
signal at 75# of
U104,if no check
Q106 circuit or change
U104,if yes Check
Q103 circuit Check DC 5.0V on
CN106#1, #2, #3
Are there data output on
U104#105~#114,
#118~#127
Change U104
END
Change D101,
D102 & D103
YES
YES
VGA
YES
NO
NO
NO
IS the display is white and cannot
display OSD when press key?
Yes
Is the FFC cable
inserting ok,if no
reinsert else
change FFC cable
No
Is display selftest picture at
VGA mode or DVI mode?
DVI
Is there DVI signal in U104
#39, #40, #42, #43, #45, #46,
#48 #49?
YES
Change
D108,D109,D110,D111,D112,
D113,D114,D115