Dell OptiPlex N Service Manual (.pdf) - Page 61

System Board, lock it in position, push down near each slot to engage the grounding clip onto

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System Board screw system board back of computer slots (5) tabs (5) Figure 4-16. System Board Removal To remove the system board, follow these steps. CAUTION: Do not use the microprocessor heat sink as a handle when removing or installing the board. 1. Disconnect all cables from their connectors at the back of the computer. 2. Remove the expansion-card cage. 3. Disconnect all cables from the system board. 4. Remove the screw that secures the system board to the bottom of the chassis (see Figure 4-16). 5. Slide the system board toward the front of the chassis until it stops. 6. Carefully lift the system board out of the chassis (be sure to lift evenly and not twist the system board). If you are replacing a system board, remove the microprocessor/heat sink assembly and the DIMMs from the old system board and install them on the replacement board. When you reinstall the system board, before you slide the system board back to lock it in position, push down near each slot to engage the grounding clip onto its corresponding tab. Push evenly on both sides of the system board as you slide it into position (do not twist the system board). Removing and Replacing Parts 4-17

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Removing and Replacing Parts
4-17
S
ystem Board
Figure 4-16.
System Board Removal
To remove the system board, follow these steps.
1.
Disconnect all cables from their connectors at the back of the
computer.
2.
Remove the expansion-card cage.
3.
Disconnect all cables from the system board.
4.
Remove the screw that secures the system board to the bottom of the
chassis (see Figure 4-16).
5.
Slide the system board toward the front of the chassis until it stops.
6.
Carefully lift the system board out of the chassis (be sure to lift evenly
and not twist the system board).
If you are replacing a system board, remove the microprocessor/heat sink
assembly and the DIMMs from the old system board and install them on the
replacement board.
When you reinstall the system board, before you slide the system board back to
lock it in position, push down near each slot to engage the grounding clip onto
its corresponding tab. Push evenly on both sides of the system board as you
slide it into position (do not twist the system board).
CAUTION: Do not use the microprocessor heat sink as a handle when
removing or installing the board.
screw
slots (5)
tabs (5)
back of computer
system board