4. For power supplies with LED’s, if the “Amber” LED is lit, replace the power
supply (refer to “Replacing a Power Supply” on page 10-7).
5. If your power supply has no LED’s, and you have verified that the electrical
outlet works properly, but the power supply is still failing, replace it (refer to
“Replacing a Power Supply” on page 10-7).
6. If the power supply seems to be delivering power to the library (Operator
Control Panel and front panel LED’s may be functioning); however, air does
not flow from the power supply cooling fan grill on the rear of the library,
replace the power supply (refer to “Replacing a Power Supply” on page 10-7).
7. If the power supply seems to be delivering power to the library (Operator
Control Panel and front panel LED’s may be functioning), and air is flowing
from the power supply cooling fan grill on the rear of the library, observe the
“Green” LED (lowest of the three). If it is lit, the power supply is OK.

Note: If your library has -04 level redundant power supplies (see label on top

of power supply), it is normal for the one in “Standby” mode to turn its
“Green” LED off. You can test this power supply by pulling the power
connector from the other “Active” power supply. The power supply that
was in “Standby” mode will now become “Active”, and its “Green” LED
should light. If it doesn’t, replace it (refer to “Replacing a Power Supply”
on page 10-7).
If your library has -05 level redundant power supplies, the ″Green″ LED
will be ON on both power supplies. If both ″Green″ LEDs are not ON,
replace the failed power supply (refer to “Replacing a Power Supply” on
page 10-7).
8. If the “Green” LED is not lit, and it is the only one in the Library, replace it

(refer to “Replacing a Power Supply” on page 10-7).

Isolating Drive Sled Problems
Prior to replacing a drive sled CRU, verify that the following activities have been
performed:
1. Ensure that the drive firmware is at the latest level. To determine current
library and drive firmware levels using the Operator Control Panel:

v Library firmware: Monitor → Library → Identity → Version

v Drive firmware: Monitor → Drives → Identity (select a drive) → Firmware Rev

2. Prior to powering OFF the library, if possible, collect a drive dump and save it
on the host console for possible future use by Technical Support. Drive dumps
can also be saved using the Web User Interface. See chapter 4, Operations, for
instructions on using the “Save Drive Dump” on page 5-52 option under the
Service Library menu selection.
3. Try reseating the drive sled.

Note: The drive sled is hot-pluggable so it is not necessary to power off the

library. See “Replacing a Tape Drive Sled” on page 10-3.
4. Cycle power to the library.
5. If air does not flow from the drive sled cooling fan grill on the rear of the
library, replace the drive sled CRU. Several library error codes also point to
cooling problems. See “Replacing a Tape Drive Sled” on page 10-3.
6. If the drive is experiencing permanent or temporary errors or if the amber
Clean LED is lit on the front panel of the library, select Clean Drive from the
7-10 Dell PowerVault TL2000 Tape Library and TL4000 Tap e Library User's Guide