Dell PowerVault TL4000 User Manual download pdf (Page 185)

If the Library does not power on:

1. With library power OFF and the power cord unplugged, loosen the three

thumb screws (5), grasp two of the thumb screws, pull the power supply out

half way, reseat the power supply, and tighten the three thumb screws.

2. Ensure the power cord is plugged in at the power supply (6) and at the

electrical outlet, then turn library power ON.

a. For power supplies with LED's, the "Blue" LED will be lit if AC power is

good.

b. If your power supply does not have LED's, feel for air flowing out of the

cooling fan grill on the rear of the library (4). AC is good if air is flowing

from the cooling fan grill.

3. If power appears to be missing

a. Plug the power cord into another electrical outlet.

b. If power is still missing, plug another device into the outlet to test.

c. If the outlet tests OK, try another power cord with the library.

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 10-10).

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 10-10).

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 10-10).

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 10-10).

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 10-10).

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 10-10).

Isolating Drive Sled Problems

Prior to replacing a drive sled CRU, verify that the following activities have been

performed:

1. BEFORE POWERING OFF THE LIBRARY, write the drive dump to flash. It is

important to preserve the drive dump on the drive for analysis by Technical

Support.

Chapter 7. Troubleshooting 7-9

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