Dell PowerEdge SC440 Hardware Owner's Manual  - Page 69

Power Supply, Removing the Power Supply

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Power Supply Removing the Power Supply CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer and protecting against electrostatic discharge. 1 Turn off the system and attached peripherals, and disconnect the system from the electrical outlet. 2 Open the system. See "Opening the System" on page 41. 3 Depending on your system configuration, disconnect the following power cables: • P1 and P2 to the system board • P3 and P5 to the SATA or SAS drives • P7 to the diskette drive • P8, P9, and P10 to the optical and tape drives NOTE: Note the routing of the DC power cables underneath the tabs in the system frame as you release the tabs and remove the cables from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped. 4 Remove the heat sink and shroud assembly. Loosen the two captive screws holding the heat sink and shroud assembly in place. These captive screws are adjacent to the processor cooling fan housing. See Figure 3-15. 5 Tilt the heat sink and shroud assembly away from the fan housing and lift it out. 6 Remove the IDE, I/O panel, and SATA cables (if present) attached to the routing clamps on the side of the power supply. 7 Using a #2 Phillips screwdriver, remove the four Phillips screws that secure the power supply to the back panel. 8 Press the power-supply release tab down and slide the power supply toward the front of the system, then lift it out of the system chassis. See Figure 3-19. 9 Remove the cable clamp and set it aside to attach to the new power supply. Installing System Components 69

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Installing System Components
69
Power Supply
Removing the Power Supply
CAUTION:
Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. Before performing any procedure, see your
Product Information Guide
for
complete information about safety precautions, working inside the computer and protecting against electrostatic
discharge.
1
Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2
Open the system. See "Opening the System" on page 41.
3
Depending on your system configuration, disconnect the following power cables:
•
P1 and P2 to the system board
•
P3 and P5 to the SATA or SAS drives
•
P7 to the diskette drive
•
P8, P9, and P10 to the optical and tape drives
NOTE:
Note the routing of the DC power cables underneath the tabs in the system frame as you release the
tabs and remove the cables from the system board and drives. You must route these cables properly when
you replace them to prevent their being pinched or crimped.
4
Remove the heat sink and shroud assembly. Loosen the two captive screws holding the heat sink and
shroud assembly in place.
These captive screws are adjacent to the processor cooling fan housing. See Figure 3-15.
5
Tilt the heat sink and shroud assembly away from the fan housing and lift it out.
6
Remove the IDE, I/O panel, and SATA cables (if present) attached to the routing clamps on the side of
the power supply.
7
Using a #2 Phillips screwdriver, remove the four Phillips screws that secure the power supply to the
back panel.
8
Press the power-supply release tab down and slide the power supply toward the front of the system,
then lift it out of the system chassis. See Figure 3-19.
9
Remove the cable clamp and set it aside to attach to the new power supply.