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CHAPTER 5: Troubleshooting
5.2 Common Problems
A ServSwitch Professor’s STATUS LED continuously flashes three times per
second, and the Professor does not respond.
A.
This Professor unit might be set to the same address as another unit in your
system. Check all of your units; if you find another one that also seems to be
disabled and whose STATUS LED is flashing the same way, change the address of
one of the units so that the addresses no longer match. See
Section 3.3.1
.
B.
If this Professor unit is the only one in your system with this problem, the unit
has failed its self-test because one of its components is defective or has gone bad.
Call Black Box Technical Support to arrange to have it repaired (see
Section 5.3
).
A CPU connected to a ServSwitch Professor doesn’t boot, and you get a keyboard
or mouse error.
A.
First make sure the ServSwitch Professor is plugged in and powered up.
B.
If the Professor is ON, the keyboard and mouse settings for the attached CPU
might not be correct. Make sure which type of keyboard and mouse input the CPU
is expecting, then send an appropriate pair of Set Keyboard or Mouse commands
(see
Section 4.3.19
) to make sure those settings are correct.
C.
If the configuration is OK but the problem persists, check your cables. Tighten
any loose connections. If the keyboard and mouse strands of either the CPU or
User Cable have been reversed, plug them into the proper ports.
D.
If you don’t find a cable error, swap in different keyboards/mice one at a time.
If the problem goes away when you substitute a device, the old one might be bad.
E.
If swapping input devices doesn’t help, swap your cables one at a time. If the
problem goes away when you substitute a cable, the old cable is probably defective.
F.
If swapping cables doesn’t solve the problem, try connecting the CPU to either
(a) a known-good ServSwitch Professor or (b) a known-good keyboard and mouse.
If the CPU boots when it’s connected to a different unit, or directly to a keyboard
and mouse, the Professor it was connected to is probably defective.
G.
If the CPU still doesn’t boot, the CPU’s keyboard or mouse port (or other
components) might be defective. (If the CPU’s Power LED doesn’t light, the fuse
on the CPU’s motherboard might be blown.) If you still have them, plug that CPU’s
original monitor, keyboard and mouse into it and try again. If the CPU doesn’t
boot with its original equipment, something in the CPU is defective; call the CPU’s
manufacturer. If the CPU
does
boot, there’s some unusual mismatch between that
CPU and the shared monitor, keyboard, or mouse; call Black Box Tech Support.
