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SERVSWITCH™ BRAND CAT5 KVM/SERIAL/AUDIO EXTENDER
8. Troubleshooting
8.1 Common Problems
This section discusses difficulties that people sometimes have with the ServSwitch™
Brand CAT5 KVM/Serial/Audio Extender, and suggests possible remedies. If the
recommended actions don’t help, if you don’t see your problem here, or if your
problem keeps recurring, call Black Box Technical Support as directed in
Section 8.3
.
8.1.1 K
EYBOARD
The PC boots correctly with no error messages, but the keyboard does not work at all.
1. Check the keyboard cable and (if necessary) the keyboard portion of the
extension cabling to your CPU or KVM switch; if it’s loose, or if you have the
keyboard and mouse cabling reversed (plugged into each other’s Extender-
port connectors), plug the cabling in properly and reset the keyboard as
described in
Section 7.3.1
.
2. Check the interconnect cable between the Extender’s Local and Remote
Units. Is it intact along its length and securely connected at both ends? And is
it wired correctly? (Compare its wiring with that shown in
Appendix A
.)
3. If your PC is a Pentium
®
class machine, see the entry for the “My Pentium
class PC...” problem in
Section 8.1.3
.
4. Try a different model of keyboard. If the new keyboard works, the original
one might be incompatible (some older autosensing keyboards don’t work
with the Extender).
When I press keys on my keyboard the wrong characters appear.
1. Your keyboard may be in the wrong mode. Try resetting it as described in
Section 7.3.1
.
2. Power down and reboot the entire system.
The PC always comes up with “Keyboard Error.”
1. If the system appears to work fine after you press [F1] or [ESC], adjust your
BIOS setup so that the PC doesn’t test the keyboard.
2. If your PC is a Pentium class machine, see the entry for the “My Pentium class
PC...” problem in
Section 8.1.3
.
