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5-44 Chapter 5
Errors and Troubleshooting
Troubleshooting Without the Front Panel or RMC Web-Based Library
Administrator
Power Diagnostics
Diagnosing power distribution problems within the library can be
complicated. The following steps describe the best approach to resolving
most power-related problems, and assume that you have tried correcting
the problem through the following library diagnostics:
• Verify that all power cords are connected to the library and power
outlet, and that the outlet has adequate power. If only one level of a
multi-level library is not powering on (most easily noted by power
supply fans spinning), try swapping power cords with a working level
to verify cord power.
• Verify that the library has been turned on from the standby switch,
and that it does not appear to be at fault. The front standby switch
should have a definite snap as it is rocked to the
ON and STANDBY
positions.
For a multi-level library, some crucial information should be gathered
before moving on. The power at each level is independent from other
levels. If none of the power supplies on any level power up, as indicated
by the power supply fans spinning, then the most likely problem exists in
the standby switch assembly, and the routing of the standby switch
power line throughout the library. Follow the sequence below, in
troubleshooting this issue:
1. Replace the standby switch assembly.
2. If this does not resolve the problem, replace the lower mother board.
3. If this does not resolve the problem, replace the interconnect cables.
4. If this does not resolve the problem, replace the mother boards in all
upper levels.