Lenovo ThinkStation P900 (English) User Guide - ThinkStation P900 (type 30A4 a - Page 114

Hazardous voltage, current, and energy levels are present inside any component that has this label

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Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. To replace the power supply assembly, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Remove the computer cover. See "Removing the computer cover" on page 77. 3. Locate the power supply assembly. See "Locating components" on page 4. 4. Pivot the handle 1 to the left at an angle of about 90 degrees. Then, pull the handle as shown to remove the power supply assembly from the chassis. 1 Figure 39. Removing the power supply assembly 102 ThinkStation P900 User Guide

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Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a problem with
one of these parts, contact a service technician.
To replace the power supply assembly, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 77.
3. Locate the power supply assembly. See “Locating components” on page 4.
4. Pivot the handle
1
to the left at an angle of about 90 degrees. Then, pull the handle as shown to
remove the power supply assembly from the chassis.
1
Figure 39. Removing the power supply assembly
102
ThinkStation P900 User Guide