
Service Manual
31
Power (include IF +5Vand +3.3V) supply and display normal but LED Amber
Is Power LED Amber?
Do the Hsync. & Vsync. Signals exist
in CN101
#13& #14 separately when
select VGA mode by OSD?
Do the Hsync. & Vsync. Signals exist
in R115 & R116?
Do the Hsync. & Vsync. Signals exist
in U104#63& #64?
Is the Q108 work normal?
Is theLED control signal at 35# of
U104 high-low convertible when DC
on/off
END
Insert VGA Cable correctly
Check R115 & R116
Change R115 & R116
Change Q108
NO
NO
YES
YES
Change U104
NO
NO
NO
YES
YES
YES
Содержание 320-7459 - S1909WXF - 19" LCD Monitor
Страница 1: ...Service Manual 0 Service Manual LCD Monitor S1909WXf ...
Страница 16: ...Service Manual 15 8 Key Parts Pin Assignments 8 1U104 TSUM56BWHK LF 2 ...
Страница 17: ...Service Manual 16 ...
Страница 18: ...Service Manual 17 ...
Страница 53: ...Service Manual 52 Attachment 3 PCB Layout power inverter bd Power inverter bd Top Layer ...
Страница 54: ...Service Manual 53 Bottom Layer ...
Страница 55: ...Service Manual 54 I F board Top Layer ...
Страница 56: ...Service Manual 55 Bottom Layer ...
Страница 57: ...Service Manual 56 Keypad Top Layer Power key Top Layer Bottom Layer ...