Specifications
34
“R2” SERVSWITCH
E. If swapping input devices doesn’t solve the problem, begin swapping 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 plugging the CPU into a
different CPU port on the ServSwitch. If the CPU boots when it’s connected
to a different port, the old port is probably defective.
G. If swapping ports doesn’t solve the problem, try plugging a known-good
keyboard and mouse directly into the CPU that’s having the problem. If the
CPU boots, the ServSwitch might be defective; call Black Box.
H.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 does not boot with its original equipment, something in the CPU is
defective; call the CPU’s manufacturer. If the CPU does boot, there is some
kind of unusual mismatch between that CPU and the shared monitor,
keyboard, or mouse; call Black Box for technical support.
5.3.2 Y
OU
C
AN
’
T
S
WITCH
P
ORTS FROM THE
K
EYBOARD
A. Can you do anything from the keyboard? If not, the keyboard strand of your
MKM cable has probably come loose. Reconnect it.
B. The ServSwitch might have lost power for less than three seconds. (This can
cause the keyboard to lock up.) Disconnect the keyboard and plug it back in.
C. The keyboard mode that the currently selected CPU port is set for might not
match the mode that the CPU on that port expects. Issue the Set Keyboard
Mode command to change the port’s mode (see Section 4.3.7). Sometimes
this situation can confuse the CPU or keyboard so badly that it is necessary to
reboot the CPU or to reset the keyboard by unplugging it and plugging it
back in.
D. For PS/2 type equipment, if the keyboard and mouse strands of either the
CPU cable or the MKM cable have been reversed, plug them into the proper
ports.