HP 300

Motherboard
Preliminary Requirements
1. Turn the unit off.
2. Remove the power cord.
:3. Remove all assemblies from the accessory and/or system slots.
4. Remove the front panel.
5. Remove
the top cover
4. Remove the power supply.
5. Remove
the fan housing.
Procedure
1. Disconnect both fan wire connectors from the Inotherboard.
2. Using a #1 Pozidriv® screwdriver, remove the four screws holding the motherboard to
the fan housing. Refer to Figure 2-8.
Figure 2-8. Motherboard Fasteners
3. To install the motherboard, reverse steps 1 and 2.
I/O Card Cage
Preliminary Requirements
1. Turn the unit off.
2. Remove the power cord.
3. Disconnect all cables from I/O cards in the I/O slots.
4. Remove all cards from the accessory slots.
5. Remove the power supply access cover.
6. Remove the top cover.
Note that if the bus expander is mounted on top of the computer and the computer's card cage
needs
to be replaced, the computer's top cover may be removed with the bus expander attached.
Refer to the section on removing top covers.
Assembly
Replacement 35
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