Lenovo J110 Hardware Maintenance Manual - Page 83

Replacing the system board (Types 7393

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3. Disconnect all power supply cables from the system board. See "Identifying parts on the system board" on page 71. 4. At the rear of the chassis, remove the four screws that secure the power supply. 5. Lift the power supply out of the chassis. 6. Install the new power supply and insert the four screws that hold the power supply in place. 7. Reconnect all power supply cables to the system board and the drives. See "Identifying parts on the system board" on page 71. Make sure the cables are correctly routed. 8. Go to "Completing the FRU replacement" on page 92. Replacing the system board (Types 7393, 7394, and 7395) Note: When replacing the system board a new retention module for the microprocessor heat sink is required. Make sure you have a new retention module before beginning this procedure. 1. Remove both side covers. See "Removing the covers" on page 70. 2. Lay the computer on the right side to make the system board accessible. 3. Remove any adapter cards installed in the PCI connectors. See "Replacing a PCI adapter" on page 75. 4. Carefully take note of the location of all cable connections on the system board and disconnect all cables. See "Identifying parts on the system board" on page 71. 5. Remove the screws that secure the system board to the chassis. 6. Lift the system board out of the chassis. 7. Remove the memory modules from the failing system board and install them in the same location on the new system board. 8. Remove the four screws 1 securing the heat sink and fan assembly to the system board. Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 77

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3.
Disconnect all power supply cables from the system board. See “Identifying parts on the system board”
on page 71.
4.
At the rear of the chassis, remove the four screws that secure the power supply.
5.
Lift the power supply out of the chassis.
6.
Install the new power supply and insert the four screws that hold the power supply in place.
7.
Reconnect all power supply cables to the system board and the drives. See “Identifying parts on the
system board” on page 71. Make sure the cables are correctly routed.
8.
Go to “Completing the FRU replacement” on page 92.
Replacing the system board (Types 7393, 7394, and 7395)
Note:
When replacing the system board a new retention module for the microprocessor heat sink is required.
Make sure you have a new retention module before beginning this procedure.
1.
Remove both side covers. See “Removing the covers” on page 70.
2.
Lay the computer on the right side to make the system board accessible.
3.
Remove any adapter cards installed in the PCI connectors. See “Replacing a PCI adapter” on page 75.
4.
Carefully take note of the location of all cable connections on the system board and disconnect all
cables. See “Identifying parts on the system board” on page 71.
5.
Remove the screws that secure the system board to the chassis.
6.
Lift the system board out of the chassis.
7.
Remove the memory modules from the failing system board and install them in the same location on
the new system board.
8.
Remove the four screws
1
securing the heat sink and fan assembly to the system board.
Chapter 8
.
Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395)
77