Troubleshooting Your Enclosure; Safety First-For You And Your Enclosure; Troubleshooting Enclosure Startup Failure; Troubleshooting Loss Of Communication - Dell MD1420 Hardware Owner's Manual

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Owner's manual (37 pages)

Table Of Contents

Table of Contents

Safety first—for you and your enclosure

CAUTION:

Many repairs may only be done by a certified service technician. You should only perform troubleshooting and

simple repairs as authorized in your product documentation, or as directed by the online or telephone service and

support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow

the safety instructions that came with the product.

Troubleshooting enclosure startup failure

If your system stops functioning during startup, check if:

•

The enclosure fault LEDs are lit. See

•

A message is displayed on the screen. See the Dell OpenManage Server Administrator documentation.

•

There is a constant scraping or grinding sound when you access the hard disk drive. See

Troubleshooting loss of communication

For information about troubleshooting loss of communication, see

Troubleshooting external connections

•

Verify that the cables are connected to the correct ports before troubleshooting any external devices. For the location of the back-

panel connectors on your enclosure, see

•

Ensure that all the cables are securely attached to the external connectors on your enclosure.

Troubleshooting power supply unit or cooling fan

module

CAUTION:

Many repairs may only be done by a certified service technician. You should only perform troubleshooting and

simple repairs as authorized in your product documentation, or as directed by the online or telephone service and

support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow

the safety instructions that came with the product.

CAUTION:

It is recommended that you turn off the host server before turning off the enclosure to prevent loss of data.

1. Locate the faulty PSU and determine the status of LEDs.

•

If the AC power LED is not lit, check the power cord and power source into which the power supply is plugged.

•

Connect another device to the power source to verify if it is working.

•

Connect the cable to a different power source.

•

Replace the power cable.

If the problem is not resolved, see

•

If the DC power LED is not lit, verify that the power switch is turned on. If the power switch is turned on, see step 2.

•

If the PSU's fault indicator is lit, see

CAUTION:

Power supply unit or cooling fan modules are hot-swappable. The enclosure can operate on a single power

supply; however both modules must be installed to ensure proper cooling. A single power supply unit or cooling fan