HPE AlphaServer 300 User Manual page 88

Table 5-3 Monitor Troubleshooting
Problem
Monitor power indicator
is not on.
System powers up, but
monitor is unreadable.
Distorted, rolling, or
flickering screen display,
or wrong/uneven color.
5-8 AlphaServer 300 User's Guide
Possible Cause
Monitor is turned off.
Power cord is not
connected.
No power at wall
receptacle.
Monitor is defective.
If you have attached an
older 3-wire monitor
(RGB) that has an
optional PBXGA (ZLXp)
graphics controller to the
AlphaServer 300, the
monitor may be out of
sync and may require the
sync signal on the green
signal.
Adjustments incorrect.
Wrong type of monitor.
Defective monitor.
Monitor signal cable
loose or damaged.
Action
Turn on the monitor.
Connect the power cord to the
system or a wall receptacle.
Use another receptacle.
Try another monitor.
Temporarily attach a five-wire
monitor or attach a terminal to the
COM1 port and use the serial
console. At the SRM console
prompt (>>>), type:
>>> set tga_sync_green value
Set the value to one of the
following:
•
1 for the first PBXGA
•
2 for the second PBXGA
•
3 for both the first and second
PBXGA
After you have reset the
environment variable, you can
reattach the 3-wire monitor.
Adjust accordingly.
Try another monitor.
Try another monitor.
Inspect connector pins. Replace
cable if damaged.