![background image](http://html1.mh-extra.com/html/viewsonic/vg511s/vg511s_service-manual_1021193012.webp)
Backlight
on?
Green
Power LED
Green LED &
key pad work?
Yes
No
(1)Panel no power
(2)Panel cable not connected
(3)H/V sync process to panel
(1)Check Scaler H/V sync correct?
(2)Measure at Scaler side
Check Inverter
Orange
Check Scaler
OK
(1)Scaler no power
(2)Scaler changed no OSC
Green + Orange
Check DC power
12V,5V,3.3V,2.5V
,MCU 5V
Check MCU
crystal
Check MCU or
Reprogram MCU
B
Off
On
No
Yes
A
Picture
visible?
Use Analog Native mode
(Window Pattern )
START
6. Trouble Shooting Flow Chart
9
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG511s
VG512s
Содержание VG511s
Страница 26: ...23 ViewSonic Corporation Confidential Do Not Copy VG511s VG512s ...
Страница 35: ...11 PCB Layout Diagrams Main Board 32 ViewSonic Corporation Confidential Do Not Copy VG511s VG512s ...
Страница 36: ...Main Board 33 ViewSonic Corporation Confidential Do Not Copy VG511s VG512s ...
Страница 37: ...Control Board 34 ViewSonic Corporation Confidential Do Not Copy VG511s VG512s ...