Chapter 4
Removing and Replacing Components
Voltage Regulator Modules (VRM)
85
Voltage Regulator Modules (VRM)
The server contains 3 VRMs that are located on the I/O baseboard. Each is labeled with one of the following
voltages:
• 3.3 volts
• 5.0 volts
• 12.0 volts
CAUTION VRMs must be inserted into the slot with the corresponding voltage. Ensure VRMs are located
in the proper slot by checking the voltage label on the I/O baseboard. See Figure 4-31, “VRM
Board Remove and Replace.”
WARNING Ensure that the system is powered down and all power sources have been
disconnected from the server prior to removing or replacing a VRM.
Voltages are present at various locations within the server whenever an AC power
source is connected. This voltage is present even when the main power switch is in
the off position.
Failure to observe this warning could result in personal injury or damage to
equipment.
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