Appendix F: Troubleshooting - Raritan MCIP18 User Manual

A F: T
PPENDIX ROUBLESHOOTING

Appendix F: Troubleshooting

P
ROBLEM
No power.
No video display for one
or all computers.
The monitor cannot
correctly display the
video output from some
of the PCs.
All PCs powered up
without keyboard error,
but the keyboard at
MasterConsole IP has no
control (cannot input to
any PC).
Repeated "KB ERROR"
at power-up of PC.
After a period of trouble-
free operation, the
keyboard attached to
MasterConsole IP locks
(unable to input
keystrokes) when a
particular PC is selected,
but works normally
when other PCs are
selected.
a. Check power cord.
b. Make sure power switch is turned ON.
c. Check cable connection from PC to MCIP.
a. Check video cable's connection to the PC.
b. Check the monitor and PC: Turn off power to MCIP and the PCs.
Connect the monitor to the PC directly, boot the PC, and make sure
the monitor has the proper display. If it does not, the problem is either
with your PC, or the monitor is not compatible with your PC. If it
does display, continue to Troubleshooting #3.
a. The monitor probably does not match the video outputs. If the
monitor is a single mode type VGA, all PCs must have the same type
of video output.
b. (Note: this problem occurs most often with some IBM PS/2s and
IBM 63xx, 85xx, and 95xx monitors.) The intelligent type display
card outputs video signals based on the monitor ID-pin setting in the
connector of the monitor cable. If the ID-pin setting is correct, the
monitor at MCIP may have no display, become monochrome instead
of color, or become unstable. If this is the case, you will need to
provide a proper ID-pattern to the display card.
a. Make sure the keyboard is connected firmly into MCIP. Disconnect
and reconnect keyboard.
b. Replace keyboard. (MCIP allows hot re-connection of keyboard at
its Keyboard port.)
a. The keyboard cable from the PC to MCIP is loose. Secure the
connection and power up the PC again.
b. If the problem occurs after MCIP has been installed for a period of
time, and occurs on PCs that have previously worked with MCIP,
then some components are out of order. Verify that the PC works with
the keyboard when connected directly.
a. The most likely cause of the problem is either a voltage "spike"
(increase) or a "brown out" (decrease) in the power supply, which
would cause the microprocessors in MCIP to malfunction. A short-
term solution to the problem is to try to recover operation by turning
the MCIP power switch off and on. Then, if necessary, restart all PCs.
The long-term method of avoiding this problem is to power MCIP
from a UPS.
b. Check keyboard connection.
S
OLUTION
63