Lenovo 7D31, Maintenance Manual

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Note:
Make sure the cables are secured to the CMA with cable straps.
c. If you are installing the power supply into an empty bay, remove the power supply filler panel
from the power supply bay.
d. If more than one units are to be installed, start with the lowest available power supply bay.
Step 2. Grasp the handle on the rear of the power supply, and slide it into the power-supply bay until it
clicks into place.
Figure 90. Installing a power supply unit
After this task is completed
1. Connect the power cord to the power supply unit, and make sure it's properly connected to the power.
2. Pull the handle to try if the power supply unit is properly installed. If it slides out, reinstall it.
Processor and heat sink replacement
Follow instructions in this section to remove and install a processor and heat sink.
Attention:
Before you begin replacing a processor, make sure that you have an alcohol cleaning pad (part
number 00MP352) and thermal grease.
Remove a processor and heat sink
This task has instructions for removing an assembled processor and heat sink, known as a processor-heat-
sink module (PHM). This task requires a Torx T30 driver. This procedure must be executed by a trained
technician.
About this task
S002
CAUTION:
Chapter 4
.
Hardware replacement procedures
177