Black Box ServSwitch SW721AE-R2, User Manual

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CHAPTER 5: Troubleshooting
5.2 Restoring Factory-Default Settings
If you’re having difficulty with a ServSwitch, something that often helps is resetting
the switch to its factory defaults. Follow these steps carefully:
1. Make sure that the ServSwitch and all CPUs directly or indirectly connected to
it are turned OFF.
2. Press and hold in the NEXT button on the front of the ServSwitch. While
holding in the NEXT button, push the ON/OFF button on the front of the
ServSwitch to power up the switch.
3. Wait until Port 2’s red LED lights up, then release the NEXT button.
4. Cycle power to the switch (push the ON/OFF button once to turn the switch
OFF, then push it again to turn the switch ON).
5. Select Port 1 on the ServSwitch. Power up the device on Port l; if the device is
a CPU, wait for it to go completely through its boot-up process. Then select
Port 2, power up that device, and so on.
6. Starting with the lowest-numbered CPU and proceeding to the highest-
numbered one, power up the CPUs one at a time, waiting for each to boot
completely before going to the next.
Now reconfigure the box to your desired settings. If you’re still having difficulty,
refer to
Section 5.3 . If it doesn’t help you to solve your problem, call Black Box for
technical support.
5.3 Common Problems
5.3.1 A CPU C
ONNECTED TO
Y
OUR
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ERV
S
WITCH
D
OESN
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T
B
OOT
,
AND
Y
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ET A
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EYBOARD OR
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OUSE
E
RROR
A. First make sure your ServSwitch is plugged in and powered up.
B. If the switch is ON, check its configuration. The keyboard and mouse settings
for that CPU might not be correct.
C. If the configuration is OK, check your cables. Tighten any loose connections.
If the keyboard and mouse strands of either the CPU cable or the MKM cable
have been reversed, plug them into the proper ports.
D. If you don’t find a cable error, try swapping in different keyboards and/or
mice one at a time. If the problem goes away when you substitute a device, the
old one might have gone bad.