or damaged eventually results in the cell location that is located by the gripper, bar code reader, and
positional emitter pulse count after the prism detection retry count is exhausted. If several prisms are
missing or damaged or if the accessor prism sensor/emitter is inoperable, initialization or inventory
functions can take a prolonged amount of time to complete because of the lengthy retry recovery
procedure.
If the library is taking an extended amount of time to initialize, to complete an inventory, or even move a
cartridge within the library, the magazine 's prism integrity must be verified before a library component
is exchanged. This situation is noted by the ACTIVITY line on the Operator Panel posting Recovery.
Prism integrity verification is done by releasing the magazines and inspecting the cell prisms. Normal
initialization or inventory time for a 2U library when the picker mechanism starts its operation is
approximately 1 - 2 minutes. For a 4U library, 2 - 3 minutes. A single missing or damaged prism can add
1 - 2 minutes. If the accessor tray sensor/emitter is inoperable, or several prisms are missing or damaged,
initialization, or inventory might exceed 30 minutes or longer. Refer to Troubleshooting table “Cartridge
Movement Problems”.
Procedures for isolating CRU problems
Isolating a power supply problem
About this task
Note: Not all power supplies have LEDs. The original power supply for the 2U library did not have
LEDs, though any replaced power supplies likely have LEDs. The 4U library has power supplies with
LEDs.
Figure 158. A 250w power supply with LEDs
194 IBM TS3100 Tape Library and TS3200 Tape Library: Setup, Operator, and Service Guide Machine Type 3573
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