Lenovo ThinkStation P300 - Manual (Page 88)

Accessing the system board components and drives
Attention: Do not open your computer or attempt any repair before reading and understanding the “Read
this first: Important safety information” on page v.
This section provides instructions on how to access the system board components and drives.
To access the system board components and drives, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 74.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 74.
4. Remove the heat sink fan duct. See “Replacing the heat sink and fan assembly” on page 98.
5. Press the release tab and pivot the drive bay assembly upward to access the system board components
and the cables. See “Installing or replacing the optical drive” on page 87.
Installing or replacing a memory module
Attention: Do not open your computer or attempt any repair before reading and understanding the “Read
this first: Important safety information” on page v.
This section provides instructions on how to install or replace a memory module.
Your computer has four slots for installing or replacing DDR3 UDIMMs that provide up to a maximum of
32 GB system memory. When installing or replacing a memory module, use 4 GB or 8 GB DDR3 UDIMMs
in any combination up to a maximum of 32 GB.
The following table provides information about the memory module installation rules that you should
consider when installing or removing a memory module. The “X” mark indicates the memory slot(s) into
which the memory module(s) should be installed in different situations. The numbers 1, 2, 3, and 4 indicate
the installation sequence. To locate the memory module slots, see “Locating parts on the system board”
on page 6.
UDIMM DIMM 1 DIMM 2 DIMM 3 DIMM 4
One UDIMM X
Two UDIMMs X, 1 X, 2
Three UDIMMs X, 1 X, 3 X, 2
Four UDIMMs X, 1 X, 3 X, 2 X, 4
To install or replace a memory module, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 74.
3. Lay the computer on its side for easier access to the system board.
4. Locate the memory slots. See “Locating parts on the system board” on page 6.
5. Remove any parts that might prevent your access to the memory slots. Depending on your computer
model, you might need to remove the PCI Express x16 graphics card for easier access to the memory
slots. See “Installing or replacing a PCI card” on page 78.
6. Depending on whether you are installing or replacing a memory module, do one of the following:
76 ThinkStation P300 User Guide