Raritan MasterConsole MX48, Инструкция по установке и эксплуатации

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A
PPENDIX
F: T
ROUBLESHOOTING
45
Appendix F: Troubleshooting
No power. Check power cord and make sure power switch is turned on.
Check cable connection from computer to MX
4
.
MX
4
power supply has built-in surge protection. If you cannot regain power
during a power recycling process, power off the unit. Wait for 15–20 seconds,
and then turn on again.
No video display for one or all
computers. Check video cable's connection to the computer.
Check the monitor and computer. Turn off the power to MasterConsole and
computers. Connect the monitor to the computer directly, boot the computer and
make sure the monitor has the proper display. If it does not, either the problem is
with your computer or the monitor is not compatible with your computer. If it
does display, continue to Troubleshooting item
The monitor cannot correctly
display the video output from
some of the computers. The monitor probably does not match the video outputs. If the monitor is a
single-mode-type VGA, all computers must have the same type of video output.
See Select Sync Type on page 32 if a change of sync type is necessary.
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 MasterConsole 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 for the display card. Call Raritan Computer
Technical Support for help.
All computers powered up
without keyboard error, but the
keyboard at MX
4
has no
control—cannot input to any
computer.
Make sure the keyboard is connected firmly into the cable connector and the 25-
pin cable is connected to the MX
4
. Disconnect and reconnect keyboard.
Replace keyboard. MasterConsole allows hot reconnection of the keyboard at its
user console port.
In a two-tier configuration, check that the MX
4
with the keyboard connected is
the base unit.
Repeated "KB ERROR" at
computer power-up. The keyboard cable from the computer to the MX
4
is loose. Secure the
connection and power up the computer again.
If the problem occurs after the MX
4
has been installed for a period of time and
occurs on computers that have previously worked with MX
4
, then some
components are out of order. Verify that the computer works with the keyboard
when connected directly. Then contact your dealer or Raritan Computer
Technical Support for service.
After a period of trouble-free
operation, the keyboard attached
to the MX
4
locks—unable to
input keystrokes—when a
particular computer is selected,
but works normally when other
computers are selected.
The most likely cause of the problem is either a voltage spike—increase— or a
brownout—decrease—in the power supply, which would cause the
microprocessors in the MX
4
to malfunction. A short-term solution to the problem
is to try to recover operation by turning the MX
4
's power switch off and on.
Then, if necessary, restart all computers. The long-term solution to avoid this
problem is to power the MX
4
from a UPS.
Check keyboard connection.
Repeated "MOUSE
INSTALLATION FAILURE" at
computer power-up. The mouse cable from the computer to the MX
4
is loose. Secure the connection,
and power up again.
If the problem occurs only with new computers that are being added to the
system, the firmware in the KVM—an internal mouse emulator—may need to be
upgraded to a later version to be compatible with newer computers. Contact your
dealer or Raritan Computer Technical Support for service.