Compaq dx7400 Service Reference Guide - HP Compaq dx7400 Business PC - Page 94

Power Supply

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Power Supply WARNING! Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 56). 2. Remove the access panel (Access Panel on page 57). 3. Disconnect all power cables from the mass storage devices and from the system board. 4. Cut the tie wrap (1) at the bottom of the fan that secures the CPU power cable (2) to the fan cage. NOTE: If necessary, remove the fan to cut this tie. 84 Chapter 7 Removal and Replacement Procedures Microtower (MT) Chassis

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Power Supply
WARNING!
Voltage is always present on the system board when the computer is plugged into an
active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should
be disconnected from the computer and/or the AC outlet before opening the computer.
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
56
).
2.
Remove the access panel (
Access Panel
on page
57
).
3.
Disconnect all power cables from the mass storage devices and from the system board.
4.
Cut the tie wrap (1) at the bottom of the fan that secures the CPU power cable (2) to the fan cage.
NOTE:
If necessary, remove the fan to cut this tie.
84
Chapter 7
Removal and Replacement Procedures Microtower (MT) Chassis