Vrm Heatsink (For Selected Models Of M90S Gen 2) - Lenovo ThinkCentre M90s Gen 2 Hardware Maintenance Manual

Notes:
• For computers with 125-watt CPU, ensure that a new VRM heat sink is installed when you replace the
system board. If the new system board does not come with a VRM heat sink, see "VRM heatsink (for
selected models of M90s Gen 2)" on page 89 to install one first. (VRM heatsink is not applicable for the
computers with 65-watt CPU.)
• The failing system board must be returned with a microprocessor socket cover to protect the pins during
shipping and handling.

VRM heatsink (for selected models of M90s Gen 2)

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
CAUTION:
The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off the
computer and wait several minutes until the computer is cool.
For access, remove these FRUs in order, if any:
• "Computer cover" on page 61
• "Front bezel" on page 62
• "Drive bay assembly" on page 64
• "M.2 solid-state drive and heat sink" on page 68
• "Wi-Fi card" on page 73
• "PCI-Express connector cable" on page 76
• "PCI-Express card" on page 76
• "Front IO bracket and power button" on page 81
• "Card reader and card reader bracket" on page 83
.
Chapter 6 Hardware removal and installation
89