Service Manual
48
5. 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
U105 #28, #25 #23?
Is the panel enable
signal at 73# of
U105,if no check
Q104 circuit or change
U105,if yes Check
Q101 circuit
Check DC 5.0V on
CN103#1, #2, #3
Are there data output on
U105#77~#86,
#91~#100
Change U105
END
Check VGA input
circuit (D105, D1
D103 R114 R115 R116
C113 C114 C115)
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 U105 #9,
#10,#12,#13,#15,#16,#18 #19?
YES
Check DVI input circuit
(D202~D209 and
R201~R208)
Содержание 2209WA - UltraSharp - 22" LCD Monitor
Страница 1: ...Service Manual 0 Service Manual LCD Monitor 2209WA ...
Страница 25: ...Service Manual 24 8 Key Parts Pin Assignments 8 1 U105 TSUMU58EHJ LF ...
Страница 26: ...Service Manual 25 ...
Страница 27: ...Service Manual 26 ...
Страница 31: ...Service Manual 30 ...
Страница 32: ...Service Manual 31 Chapter 4 Disassembly Assembly 1 Exploded Diagram ...
Страница 36: ...Service Manual 35 Note 1 The arrows point out the direction of assembly ...
Страница 44: ...Service Manual 43 ...
Страница 80: ...Service Manual 79 ...
Страница 81: ...Service Manual 80 Attachment 3 PCB Layout power inverter bd inverter board Top Layer Bottom Layer ...
Страница 82: ...Service Manual 81 Main board Top Layer ...
Страница 83: ...Service Manual 82 Bottom Layer ...
Страница 84: ...Service Manual 83 Keypad USB convert board ...
Страница 85: ...Service Manual 84 ...