Lenovo ThinkCentre9126, Hardware Maintenance Manual

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4.
Lift the power supply out of the chassis.
5. If the power supply has a voltage-selection switch, ensure that it is set to
match the voltage available at the electrical outlet.
v
If the voltage supply range in your local country or region is 100-127 V ac,
set the switch to 115 V.
v If the voltage supply range in your local country or region is 200-240 V ac,
set the switch to 230 V.
6. Install the new power supply into the chassis so that the screw holes in the
power supply align with those in the chassis.
7. Install the four screws to secure the power supply.
Note: Use only the screws provided by Lenovo.
8. Reconnect the power supply connectors to the system board. See “Locating
parts on the system board” on page 89.
9.
Reconnect a power supply connector to each of the drives.
10. Go to “Completing the FRU replacement” on page 110.
Replacing the system board
Important
The heat sink and microprocessor might be very hot. Make sure these
components are cool enough to safely handle before continuing this
procedure.
Note: When replacing the system board you must also order a new retention
module for the new system board. Make sure you have a retention module
for the new system board before continuing with this procedure.
This procedure describes how to remove and replace the system board.
Chapter 8. Replacing FRUs - Tower Computers
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