Verify that the new power supply is operating properly. The blue and green LEDs on the
power supply module should be lit and the yellow LED should be off, as shown in
Figure 103 (page
Figure 103 Power supply LEDs
Replacing the power supply (MSL4048, MSL8048, and MSL8096)
This process applies to the MSL4048, MSL8048, and MSL8096 only. A redundant power supply
can be replaced without powering off the library.
In this process you will:
Power off the library, if necessary, and unplug the power cord. (Only libraries with a single
Remove the old power supply.
Install the new power supply.
Verify the replacement.
containers until needed. Ensure that you are properly grounded when touching static-sensitive
To replace a power supply:
If the library only has one power supply, power off the library from the front panel, if possible,
and remove the AC power cord. Otherwise, just remove the AC power cord from the power
supply to be replaced.
Loosen the three captive thumbscrews on the power supply. Grasp a thumbscrew stem on
each side of the power supply and while supporting the bottom, pull the power supply out
of the library, as shown in
194 Upgrading and servicing the tape library
194). Both power supplies should be listed on the OCP screen.
AC power is connected.
Fan failure. The fan is running too slow or is defective.
The power supply is producing good power for the library.
Parts can be damaged by electrostatic discharge. Keep parts in electrostatic
Figure 104 (page