Troubleshooting - HP WF1907 Service Manual

4. Troubleshooting

4.1 No.display of screen (Screen is black, color of LED is amber)
Does OSD display when you push MENU
button.
No
Proceed "No OSD display" section.
When a signal isn't being input, it is
indicated with "VIDEO INPUT". it is
Yes
indicated with "OUT OF RANGE" at the
time of the frequency that it can't be
distinguished.
Check if the sync signal from computer is
output and if the video cable is connected
normally. (VGA or DVI)
Input the sync signal of computer, or change
NG
the cable. (VGA or DVI)
OK
Proceed "checking the resolution change IC
movement" section.
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