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Power Supply
Dell™ OptiPlex™ GX280 Systems
User's Guide
Removing the Power Supply
Replacing the Power Supply
DC Power Connectors
Removing the Power Supply
 |
NOTICE: To prevent static damage to components inside your computer, discharge static electricity
from your body before you touch any of your computer's electronic components. You can do so by
touching an unpainted metal surface on the computer chassis.
|
Small Form-Factor Computer
|
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. |
- Follow the procedures in "Before You Begin."
- Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped.
- Press the release button located on the floor of the computer frame.
1 |
release button |
2 |
AC power connector |
- Slide the power supply toward the front of the computer approximately 1 inch.
- Lift the power supply up and out of the computer.
Small Desktop Computer
|
|
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. |
- Follow the procedures in "Before You Begin."
- Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped.
- Remove the card cage and remove the power cables from the side of the hard drive. To remove
the power cables, use the cables as leverage and pull away from the clips while you pull on the
metal clips with your fingers.
- Press down on the handle, which in turn presses the release button.
1 |
release button |
2 |
handle |
3 |
AC power connector |
- Slide the power supply toward the front of the computer approximately 1 inch.
- Lift the power supply up and out of the computer.
Small Mini-Tower Computer
|
|
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. |
- Follow the procedures in "Before You Begin."
- Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped.
- Remove the two screws that attach the power supply to the back of the computer frame.
- Press the release button located on the floor of the computer frame.
- Slide the power supply toward the front of the computer approximately 1 inch.
- Lift the power supply up and out of the computer.
Replacing the Power Supply
|
|
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. |
- Slide the power supply into place.
- On the small mini-tower computer, replace the two screws that secure the power supply to the
back of the computer frame.
- Reconnect the DC power cables.
- Connect the AC power cable to the connector.
- On the small desktop computer, reattach the power cables to the side of the hard drive and
replace the card cage.
- Run the cables underneath the clips, and press the clips to close them over the cables.
- Close the computer cover.
- Attach the computer stand, if it is used.
|
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into
the computer.
|
- Connect your computer and devices to electrical outlets, and turn them on.
DC Power Connectors
Small Form-Factor Power Supply DC Connector Pin Assignments
DC Power Connector P1
|
Pin Number
|
Signal name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | +3.3 VDC | Orange |
3 | COM | Black |
4 | +5 VDC | Red |
5 | COM | Black |
6 | +5 VDC | Red |
7 | COM | Black |
8 | POK | Gray |
9 | +5 VFP | Purple |
10 | +12 VDC | Yellow |
11 | +3.3 VDC* | Orange |
12 | –12 VDC | Blue |
13 | COM | Black |
14 | PS ON | Green |
15 | COM | Black |
16 | COM | Black |
17 | COM | Black |
18 | N/C | N/C |
19 | +5
VDC | Red |
20 | +5
VDC | Red |
*Sense connector. |
DC Power Connector P2
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | COM | Black |
2 | COM | Black |
3 | +12 VDC | Yellow |
4 | +12 VDC | Yellow |
DC Power Connectors P3
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | COM | Black |
3 | +5 VDC | Red |
4 | COM | Black |
5 | +12 VDC | Yellow |
DC Power Connector P4 and P5
|
Pin Number
|
Signal Name
|
22-AWG Wire
|
|---|
1 | +5
VDC | Red |
2 | COM | Black |
3 | COM | Black |
4 | +12 VDC | Yellow |
DC Power Connector P6
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | | N/C |
2 | COM | Black |
3 | COM | Black |
4 | +3.3 VDC | Orange |
5 | +5 VDC | Red |
6 | +12 VDC | Yellow |
Small Desktop Power Supply DC Connector Pin Assignments
 |
NOTE: Your computer's
power supply may or may not have the "P7" connector. |
DC Power Connector P1
|
Pin Number
|
Signal name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | +3.3 VDC | Orange |
3 | COM | Black |
4 | +5 VDC | Red |
5 | COM | Black |
6 | +5 VDC | Red |
7 | COM | Black |
8 | POK* | Gray |
9 | +5 VFP | Purple |
10 | +12 VDC | Yellow |
11 | +3.3 VDC | Orange |
12 | –12 VDC* | Blue |
13 | COM | Black |
14 | PS ON* | Green |
15 | COM | Black |
16 | COM | Black |
17 | COM | Black |
18 | N/C | N/C |
19 | +5 VDC | Red |
20 | +5 VDC | Red |
* Use 22-AWG wire instead of 18-AWG wire. |
DC Power Connector P2
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | COM | Black |
3 | +5 VDC | Red |
4 | COM | Black |
5 | +12 VDC | Yellow |
DC Power Connectors P3 and P4
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | +12 VDC | Yellow |
2 | COM | Black |
3 | COM | Black |
4 | +5 VDC | Red |
DC Power Connector P5
|
Pin Number
|
Signal Name
|
22-AWG Wire
|
|---|
1 | +5 VDC | Red |
2 | COM | Black |
3 | COM | Black |
4 | +12 VDC | Yellow |
DC Power Connector P6
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | COM | Black |
2 | COM | Black |
3 | +12 VDC | Yellow |
4 | +12 VDC | Yellow |
DC Power Connector P7
|
NOTE: Your computer
may or may not have the "P7" connector. |
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 |
| N/C |
2 | COM | Black |
3 | COM | Black |
4 | +3.3 VDC | Orange |
5 | +5 VDC | Red |
6 | +12 VDC | Yellow |
Small Mini-Tower Power Supply DC Connector Pin Assignments
|
NOTE: Your computer
may or may not have the "P4" connector. |
DC Power Connector P1
|
Pin Number
|
Signal name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | +3.3 VDC | Orange |
3 | COM | Black |
4 | +5 VDC | Red |
5 | COM | Black |
6 | +5 VDC | Red |
7 | COM | Black |
8 | POK | Gray |
9 | +5 VFP | Purple |
10 | +12 VDC | Yellow |
11 | +3.3 VDC* | Orange |
12 | –12 VDC | Blue |
13 | COM | Black |
14 | PS ON | Green |
15 | COM | Black |
16 | COM | Black |
17 | COM | Black |
18 | N/C | N/C |
19 | +5
VDC | Red |
20 | +5
VDC | Red |
*Sense connector. |
DC Power Connector P2
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | COM | Black |
2 | COM | Black |
3 | +12 VDC | Yellow |
4 | +12 VDC | Yellow |
DC Power Connectors P3
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | COM | Black |
3 | +5 VDC | Red |
4 | COM | Black |
5 | +12 VDC | Yellow |
DC Power Connector P4
|
NOTE: Your computer
may or may not have the "P4" connector. |
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | | N/C |
2 | COM | Black |
3 | COM | Black |
4 | +3.3 VDC | Orange |
5 | +5 VDC | Red |
6 | +12 VDC | Yellow |
DC Power Connector P5
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | +3.3 VDC | Orange |
2 | COM | Black |
3 | +5 VDC | Red |
4 | COM | Black |
5 | +12 VDC | Yellow |
DC Power Connectors P6, P8, and P9
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1 | +12
VDC | Yellow |
2 | COM | Black |
3 | COM | Black |
4 | +5 VDC | Red |
DC Power Connector P7
|
Pin Number
|
Signal Name
|
22-AWG Wire
|
|---|
1 | +5
VDC | Red |
2 | COM | Black |
3 | COM | Black |
4 | +12 VDC | Yellow |
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