HP ProLiant DL140 User Manual page 61

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Be sure the monitor and any KVM switch are compatible with the VGA
output of the server.
Slow-moving horizontal lines are displayed
Action: Be sure magnetic field interference is not occurring. Move the monitor
away from other monitors or power transformers.
Audio problems
Action: Be sure the server speaker is connected. Refer to the server
documentation.
Printer problems
Printer does not print
Action:
1. Be sure the printer is powered up and online.
2. Be sure no loose connections (on page 23) exist.
3. Be sure the correct printer drivers are installed.
Printer output is garbled
Action: Be sure the correct printer drivers are installed.
Mouse and keyboard problems
Action:
1. Be sure no loose connections (on page 23) exist. If a KVM switching device
is in use, be sure the server is properly connected to the switch.
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For rack-mounted servers, check the cables to the switch box and be sure
the switch is correctly set for the server.
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For tower-model servers, check the cable connection from the input
device to the server.
Troubleshooting 61