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Installing Redundant Power Supplies: Dell™ PowerEdge™
2400 Systems Installation and Troubleshooting Guide
Overview • Installing the PSDB • Installing the Dual Power Supplies
This section includes instructions on upgrading your system with
dual, redundant hot-plug power supplies and a power-supply distribution board (PSDB).
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WARNING: Before you perform
the procedures in this section, you must turn off the computer and disconnect it from its
AC power source. For more information, refer to "Safety First—For You and
Your Computer."
|
|
WARNING: Do not remove the
cover from the PSDB. No user-serviceable parts are inside this assembly.
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To install a PSDB in the computer, perform the following steps.
NOTICE: See "Protecting
Against Electrostatic Discharge."
- Remove the front bezel
and both computer covers.
- Disconnect the AC power cable from the AC power receptacle on the back of the power
supply.
- Remove the two screws at the front edge of the top cover (see Figure 1).
Figure 1. Removing the Top Cover
- Slide the top cover about a half inch toward the front of the computer and lift it away.
- 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.
- Remove the two screws on either side of the power supply (see Figure 2).
Figure 2. Removing the Power Supply
1
|
Power supply |
2
|
Power-supply mounting screws
(2) |
- Slide the power supply out of the system chassis.
- Install the PSDB onto the PSDB tray (see Figure 3):
- 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 towards the back of the chassis.
- Slide the PSDB toward the back of the system about one centimeter (a quarter of an
inch).
- Secure the PSDB by tightening the thumbscrew.
Figure 3. Installing the PSDB and Dual Power Supplies
1
|
PSDB |
| 2 |
Power supplies (2) |
| 3 |
Catch on power supply handle |
- Attach the 12-conductor cable labeled "PWR3" to connector P3 on the PSDB (see
Figure 4) and to connector POWER2 on the system board.
Figure 4. Features on the PSDB
1
|
Power connector P2 |
| 2 |
Thumbscrew |
| 3 |
Power connector P3 |
| 4 |
Power connector P1 |
- Attach the 24-conductor cable labeled "PWR1" to connector P1 on the PSDB and
connector POWER1 on the system board.
- To attach the cable harness provided in the upgrade kit, perform the following steps:
- Attach the 18-pin connector labeled "PWR2" to connector P2 on the PSDB.
- Attach the 16-pin connector to the connector labeled "POWER" on the SCSI
backplane board.
- Connect the remaining connectors on the cable harness to the diskette drive, tape drive,
or other drives in the external drive bays.
- Replace the top cover and secure it with the two screws.
- Replace the two computer covers.
To install the dual power supplies, perform the following steps.
NOTICE: The power supplies are heavy. Support them with both hands when you
install or remove them.
- Using your thumb and index finger, squeeze the catch in the middle of the power supply
handle (see Figure 3).
- Rotate the handle downward.
NOTICE: Do not use excessive force when sliding the power supply into the
chassis.
- Slide the power supply into the chassis (see Figure 3).
- Rotate the power supply handle to the closed position (see Figure 3).
For better leverage, press against the upper corners of the handle.
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NOTE: The power supply will not
function until the handle is closed. |
- Repeat steps 1 through 4 to install the second power supply.
- Connect the AC power cable to the power supplies and to the electrical outlet.
- Make sure that the AC power cable passes through the plastic strain-relief clip on the
system back panel.
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