Lenovo ThinkStation C20x 4269 Hardware Manual page 108

10. Reconnect all the power supply cables to the drives, adapters, and the system
11. Go to "Completing the FRU replacement" on page 123.
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Hardware Maintenance Manual
9. Ensure that the power supply is the correct replacement. Some power supplies
auto sense the voltage, some power supplies are voltage specific, and some
power supplies have a voltage selection switch. If there is a selection switch
use a ballpoint pen to slide the switch, if necessary.
Note: For models that have a switch:
v If the voltage supply range is 100–127 V ac, set the switch to 115 V.
v If the voltage supply range is 200–240 V ac, set the switch to 230 V.
board. Make sure to reconnect power to the graphics cards that require an
additional cable.