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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 IBM PC 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 4.3.13).
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. With IBM type equipment, maximum distance of original Serv
cable from any CPU to the shared monitor, keyboard, and mouse is 25 ft. (7.6 m).
With Apple or Sun equipment, maximum distance of standard coaxial cable from
any ServSwitch to any attached device is 100 ft. (30.5 m). The distance you can run
will be less than the maximum if you are using SVGA video on original Serv cables
or if you are cascading submasters. If you’re running IBM video, you might need to
upgrade from original Serv cables to coaxial cables that carry the video signal
better. If you are already using coax cables for IBM video, you might need to add
Station Extenders (our product codes AC253 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.
E. The CPU is sending video with sync on green, which the ServSwitch does not
currently support. Call Black Box for technical support.