Lenovo ThinkStation P300 - Manual (Page 95)

7. Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 84.
8. Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on
page 111.
Note: When the computer is turned on for the first time after replacing the battery, an error message
might be displayed. This is normal after replacing the battery.
9. Turn on the computer and all attached devices.
10. Use the Setup Utility program to set the date, time, and any passwords. See “Using the Setup Utility
program” on page 37.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 111.
Replacing the power supply assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the “Read
this first: Important safety information” on page v.
Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.
CAUTION:
Hazardous moving parts. Keep fingers and other body parts away.
CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.
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 71.
Chapter 9 . Installing or replacing hardware 83