Intergraph TD-x20 System Reference Manual page 37

To remove the power supply from a desktop system:
1. Remove the AC power cord from the back of the base unit.
2. Remove the SCSI termination card as described previously in "SCSI Termination Card
(Desktop)." It is not necessary to disconnect the card from the SCSI cable.
3. Remove the system disk drives as described previously in Chapter 2, "Maintaining
System Devices."
4. Disconnect the power cables from the floppy disk drive, CD-ROM drive, and hard disk
drives.
5. Disconnect the system power cables from the power cable connectors on the system
board.
6. Open the clip that secures the bundle of power cables. Remove the audio cable
(connecting the CD-ROM drive to the system board) from the power cable bundle.
7. Remove the screws securing the power supply to the back of the base unit.
8. Slide the power supply to the front and remove it from the base unit.
9. Remove the power switch cable and grounding wire from the chassis.
To remove the power supply from a deskside system:
1. Remove the AC power cord from the back of the base unit.
2. When opening the base unit, remove the side panels and back panel.
3. Disconnect the power cables from the riser card, hard disk drives, floppy disk drive, and
CD-ROM drive.
4. Disconnect the system power cables from the power cable connectors on the system
board.
5. Open the clip that secures the bundle of power cables. Remove the audio cable
(connecting the CD-ROM drive to the system board) from the power cable bundle.
6. Remove the screws securing the power supply to the back of the base unit. Refer to the
following figure.
CAUTION Support the bottom of the power supply with your hand as you remove the screws.
Otherwise, the power supply could fall and cause damage inside the base unit.
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