HP Pro 3515 Micro Maintenance & Service Guide Pro 3400 3405 3410 3500 3505 - Page 94

Preparation for Disassembly, on Access Panel, Front Bezel, Expansion Cards

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When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● Memory modules ● Processor ● Expansion cards To remove the system board: 1. Prepare the computer for disassembly (Preparation for Disassembly on page 49). 2. Remove the access panel (Access Panel on page 50). 3. Remove the front bezel (Front Bezel on page 51). 4. Remove any expansion cards (Expansion Cards on page 56). 5. Disconnect all cables from the system board. 6. Remove the six screws that secure the system board to the chassis. NOTE: HP Pro 3405/3505 model system boards are secured with eight screws. 7. Slide the system board toward the front of the chassis, and then lift it up and out of the chassis. To install the system board, reverse the removal procedure. NOTE: When replacing the system board, you must also change the chassis serial number in the BIOS. NOTE: After installing a new system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system ROM BIOS can be found at: http:\\h18000.www1.hp.com/support/files. 84 Chapter 7 Removal and Replacement Procedures - Microtower Chassis

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When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
●
Memory modules
●
Processor
●
Expansion cards
To remove the system board:
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
49
).
2.
Remove the access panel (
Access Panel
on page
50
).
3.
Remove the front bezel (
Front Bezel
on page
51
).
4.
Remove any expansion cards (
Expansion Cards
on page
56
).
5.
Disconnect all cables from the system board.
6.
Remove the six screws that secure the system board to the chassis.
NOTE:
HP Pro 3405/3505 model system boards are secured with eight screws.
7.
Slide the system board toward the front of the chassis, and then lift it up and out of the chassis.
To install the system board, reverse the removal procedure.
NOTE:
When replacing the system board, you must also change the chassis serial number in the
BIOS.
NOTE:
After installing a new system board, always update the system ROM to ensure that the
latest version of the BIOS is being used on the computer. The latest system ROM BIOS can be found
at:
http:\\h18000.www1.hp.com/support/files
.
84
Chapter 7
Removal and Replacement Procedures – Microtower Chassis