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Compaq Deskpro Workstation AP250 Maintenance and Service Guide
Compaq Confidential – Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: e-ch4 Diagnostic Tools.doc Last Saved On: 10/26/99 3:09 PM
Display Problems
Table 4-4
Solutions for Display Problems
Problem
Possible Solution
Screen is blank.
Monitor is not turned on and the monitor
light is not on. Turn on the monitor and
check that the monitor light is on.
Screen save has been initiated. Press any
key or move the mouse to light the screen.
Wait a few seconds for the screen to
become active.
Check the cable connection from the
monitor to the workstation and check the
grounded AC outlet.
The brightness needs adjusting. Adjust the
brightness control.
The energy saver feature has been
enabled. Press any key or type the
password. Wait a few seconds for the
screen to become active.
The RGB (red, green, blue) input switch on
the back of the monitor is incorrectly set.
Set the monitor Input switch to 75 ohms. If
there is a sync switch, set it to External.
If a fixed-sync monitor is used, be sure that
the monitor can accept the same sweep
rate as the resolution chosen.
Check that the graphics adapter is fully and
properly inserted in the PCI or AGP slot.
Graphics colors are wrong.
If the BNC cable is used, make sure that
the red, green, and blue BNC cables are
connected to the corresponding monitor
connectors.
Be sure the monitor RGB inputs are set to
75 ohms.
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