Dell PowerEdge 2400 User manual



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



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Throughout this guide, blocks of text may be accompanied by an icon and printed in

bold type or in italic type. These blocks are notes, notices, cautions, and warnings,

and they are used as follows:

NOTE: A NOTE indicates important information that helps you make better use of your

computer system.



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$%&$%&!"

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____________________

Information in this document is subject to change without notice.

Reproduction in any manner whatsoever without the written permission of Dell Computer

Corporation is strictly forbidden.

Trademarks used in this text: Dell, PowerEdge, and the DELL logo are trademarks of Dell Computer

Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities

claiming the marks and names or their products. Dell Computer Corporation disclaims any

proprietary interest in trademarks and trade names other than its own.

Ocober 1999 P/N 8761T Rev. A01

Dell PowerEdge 2400 Systems — Installing Redundant Power Supplies 1-1







This document provides instructions on upgrading your Dell system with dual, redun-

dant hot-plug power supplies and a power-supply distribution board (PSDB).



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1. Remove the front bezel and both computer covers.

For instructions, see Chapter 7, Checking Inside the Computer,in the Installa-

tion and Troubleshooting Guide.

2. Disconnect the AC power cable from the AC power receptacle on the back of the

power supply.

3. Remove the two screws at the front edge of the top cover (see Figure 1-1).

1-2 Dell PowerEdge 2400 Systems —Installing Redundant Power Supplies



4. Slide the top cover about 2 centimeters (cm) (about half an inch) toward the front

of the computer and lift the cover away.

5. Disconnect the power cable harness from the POWER connector on the small

computer system interface (SCSI) backplane board, the POWER1 connector on

the system board, and the diskette drive and other drives in the external drive

bays.

When you disconnect a cable connector from the SCSI backplane board and the

system board, press the plastic latch on one side of the connector to release it.

6. Remove the two screws on either side of the power supply (see Figure 1-2).

To p c o ve r

Screws (2)

Dell PowerEdge 2400 Systems —Installing Redundant Power Supplies 1-3



7. Slide the power supply out of the system chassis.

8. Install the PSDB onto the PSDB tray (see Figure 1-3):

a. While holding the PSDB by its edges, position the PSDB so that the three

tabs on the PSDB tray fit through the corresponding slots in the PSDB and

the two power supply connectors face the back of the chassis.

b. Slide the PSDB toward the back of the system about 1 cm (a quarter of an

inch).

c. Secure the PSDB by tightening the thumbscrew.

Power-supply

mounting

screws (2)

Power

supply

1-4 Dell PowerEdge 2400 Systems —Installing Redundant Power Supplies

 !

9. Attach the 12-conductor cable labeled "PWR3" to connector P3 on the PSDB (see

Figure 1-4) and to connector POWER2 on the system board.

PSDB

Power supplies (2)

Catch on power supply handle

Dell PowerEdge 2400 Systems —Installing Redundant Power Supplies 1-5

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10. Attach the 24-conductor cable labeled "PWR1" to connector P1 on the PSDB and

connector POWER1 on the system board.

11. To attach the cable harness provided in the upgrade kit, perform the following

steps:

a. Attach the 18-pin connector labeled "PWR2" to connector P2 on the PSDB.

b. Attach the 16-pin connector to the connector labeled "POWER" on the SCSI

backplane board.

c. Connect the remaining connectors on the cable harness to the diskette

drive, tape drive, and other drives in the external drive bays.

12. Replace the top cover and secure it with the two screws.

13. Replace the two computer covers.



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1. Using your thumb and index finger, squeeze the catch in the middle of the power

supply handle (see Figure 1-3).

2. Rotate the handle downward.

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

3. Slide the power supply into the chassis (see Figure 1-3).

Power connector P2

Thumbscrew Power connector P3

Power Connector P1

1-6 Dell PowerEdge 2400 Systems —Installing Redundant Power Supplies

4. Rotate the power supply handle to the closed position (see Figure 1-3).

For better leverage, press against the upper corners of the handle.

NOTE: The power supply will not function until the handle is closed.

5. Repeat steps 1 through 4 to install the second power supply.

6. Connect the AC power cable to the power supplies and to the electrical outlet.

7. Make sure that the AC power cable passes through the plastic strain-relief clip on

the system back panel.

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