HP Pro 3405 HP Pro 3400 Microtower PC, HP Pro 3405 Microtower PC, HP Pro 3410 - Page 85

Power Supply, Preparation for Disassembly, on Access Panel

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Power Supply Description Power supply, 300W (Active PFC; not for use in Brazil) Power supply, 300W Spare part number 656721-001 664862-001 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. NOTE: When installing a new power supply, be sure to set the red switch to the setting (230 V or 115 V) appropriate for the country in which the computer is used. Spare power supplies normally arrive set for 230 V. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 42). 2. Remove the access panel (Access Panel on page 43). 3. Disconnect all power cables from the mass storage devices and from the system board. 4. From the rear of the computer, remove the four Torx screws that secure the power supply to the chassis. Figure 7-28 Power supply screws 5. Inside of the unit, press the power supply release latch on the chassis base (1). Power Supply 75

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Power Supply
Description
Spare part number
Power supply, 300W (Active PFC; not for use in Brazil)
656721-001
Power supply, 300W
664862-001
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.
NOTE:
When installing a new power supply, be sure to set the red switch to the setting (230 V or
115 V) appropriate for the country in which the computer is used. Spare power supplies normally
arrive set for 230 V.
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
42
).
2.
Remove the access panel (
Access Panel
on page
43
).
3.
Disconnect all power cables from the mass storage devices and from the system board.
4.
From the rear of the computer, remove the four Torx screws that secure the power supply to the
chassis.
Figure 7-28
Power supply screws
5.
Inside of the unit, press the power supply release latch on the chassis base
(1)
.
Power Supply
75