Dell PowerEdge 1750 - Manual (Page 37)

6. Disconnect the output power cable from the PS_PWR connector on the system board.
7. Disconnect the power signal cable from the PS_SIG connector on the system board.
8. Disconnect both of the input power cables from the top of the PDB.
9. Lift the PDB out of the chassis.
Installing a Power Distribution Board
1. Route the PDB's output power cable and power signal cable through the cutout in the side of the power-supply enclosure, and lower the PDB into the
chassis.
2. Connect both input power cables to the top of the PDB.
3. Connect the power signal cable to the PS_SIG connector on the system board.
4. Connect the output power cable to the PS_PWR connector on the system board.
5. Place the cover over the PDB and replace the screw.
6. Reinstall the power supplies. See " Installing a Power Supply ."
7. Close the system covers. See " Closing the System Covers ."
8. Reconnect the system and peripherals to their power sources, and turn them on.
9. Replace the optional front bezel, if applicable. See " Replacing the Bezel ."
System Battery
The system battery is a 3.0-V, coin-cell battery located on the system board beside the front power supply.
Removing the System Battery
1. Enter the System Setup program and, if possible, make a printed copy of the System Setup screens. See " Using the System Setup Program ."
2. Remove the optional front bezel, if present. See " Removing the Bezel ."
3. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
4. Open the system covers. See " Opening the System Covers ."
5. Remove the system battery. See Figure 5 -3 for the battery connector location.
a. Support the battery connector by pressing down firmly on the positive side of the connector. See Figure 4 -20 .
b. While supporting the battery connector, press the battery toward the positive side of the connector and pry it up out of the securing tabs at the
negative side of the connector.
Figure 4-20. System Battery
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See
your System Information Guide for complete information about safety precautions, working inside the system, and protecting against
electrostatic discharge.
CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type
recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.
NOTICE: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery.