NEC MultiSync 20WGX2 Service Manual page 94

2. Nothing Display on Screen (Screen i 2. Nothing Display on Screen (Screen is Black, C
Is backlight turned on? Is backlight turned on?
O O K K
Does computer output RGB video signals? Does computer output RGB video signals?
O O K K
Chec k OSMmenu is di Chec k OSMmenu is displayed on screen splayed on screen
when you push the " when you push the "ME
O O K K
Proceed "4. Abnorm Proceed "4. Abnorm al al screen"
section. section.
N N G G
N N G G
N N G G
ME NU" key. NU" key.
screen"
s Black, Color of olor of LED is Blue) LED is Blue)
Refer "3. Checking the backlight unit" Refer "3. Checking the backlight unit"
section section
1) Change pattern of video signal 1) Change pattern of video signal
output on the host. output on the host.
2) Reconnect the video cable. 2) Reconnect the video cable.
3) Change the video cable. 3) Change the video cable.
Check if the LCD video signal cable Check if the LCD video signal cable
is connected between the MAIN PCB is connected between the MAIN PCB
and LCD m odul and LCD m odule. e.
O O K K
Next Page Next Page
6 - 3 6 - 3
Failure Point Failure Point
N N G G
The Cable is disconnected. The Cable is disconnected.