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CHAPTER 6: Troubleshooting
6.2.9 Y
OUR
M
OUSE
D
OESN
’
T
M
OVE THE
P
OINTER
/C
URSOR
A. What type of mouse is it? If it is any type other than those listed as being
supported in item A under Section 6.2.6, chances are that the ServSwitch doesn’t
support it.
B. The mouse might not be configured properly.
C. Your mouse must be connected to a powered ServSwitch when the CPUs are
booted and when mouse applications are run. Try exiting and re-entering your
application; if this doesn’t work, issue the Reset command (see Section 4.3.6).
6.2.10 Y
OUR
M
ONITOR
D
ISPLAY
I
S
F
UZZY
A. Check the settings of your monitor, especially the sharpness control.
B. If you can’t solve the problem by changing the monitor settings, you might have
run cable too far. No single original Serv cable in your system should be longer
than 20 ft. (6.1 m), and the maximum total length of original Serv cable from any
CPU to any monitor, keyboard, and mouse is 40 ft. (12.2 m). (If you’re using SVGA
or high-res Mac video, even these distances might too far.) No single coaxial cable
in your system should be longer than 100 ft. (30.5 m), and this assumes that your
CPUs can drive keyboard and mouse signals that far—you might only be able to
run 20 ft. (6.1 m).
Bottom line: If you’re running IBM or Mac video over original Serv cable, you
might need to upgrade to coaxial cables that carry the video signal better. If you
are already using coax cables, you might need to add Station Extenders (our
product codes AC253A etc.) or CAT5 KVM Extenders (our product codes
ACU9001A etc.); call Black Box for technical support. See Section 4.1.3 and
Appendix B.
6.2.11 Y
OUR
V
IDEO
I
S
N
OT
S
YNCHRONIZED OR
I
S THE
W
RONG
C
OLOR
A. If you are trying to use an IBM 9515, 9517, or 9518 monitor, you need special
cables to carry the video correctly. Call Black Box for technical support.
B. Check the settings of your monitor, especially the sync or color controls.
C. Your monitor might not be capable of synching to the selected video resolution
or frequency (refresh rate). Try a lower resolution or frequency or a more
powerful monitor.
D. The CPU is sending video with composite sync and the monitor only accepts
horizontal or vertical sync, or vice versa. Change the settings of the CPU or
monitor so that the two are compatible. If this is not possible, swap in a different
monitor that can handle all of your CPUs’ synchronization types.