Compaq Presario 7800 Series Maintenance & Service Manual page 56

Presario 7800 Series and 5900T Personal Computers
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Removal and Replacement
Removal
Sequence
Chassis
Mass Storage Devices
Button Board
Digital Creativity
Imaging Center
Option Card Retainer
Graphics Board
PCI Cards
Memory
Processor
RTC Battery
System Board Cables
System Board
Back I/O Panel
Power Supply
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Maintenance & Service Guide
Product Description
Removal &
Replacement
Troubleshooting
Jumpers & Switches
Illustrated Parts
Specifications
Removing
the Power
Supply
1. Complete
the
preparation
for
disassembly
procedures.
2. Remove the
chassis.
3. Remove
5.25-Inch
or 3.5-Inch
Hard Drive.
4. Disconnect
System
Board
Cables.
5. Disconnect
power
supply
cables from
CD/DVD,
Zip drive,
Diskette
and Hard
Drive.
6. Remove
Graphics
Board.
7. Remove the
Fax/Modem.
8. Remove
Networking
Interface
Card (on
select
models
only).
9. Remove the
Audio Card.
10. Remove the
Memory.
11. Remove the
Processor.
12. Remove the
System
Board.
13. Remove the
four screws
from the
back of the
unit and
one screw
from the
tab.
14. Slide the
power
supply
toward front
of unit and
down to
remove
from
chassis.
Replacement
To replace
the power
supply,
reverse the
removal
procedure.