Removing And Replacing Frus - Lenovo System x3850 X6 Installation And Service Manual

portion of the 11S barcode). In the following example, the prefix serial number is shown in
bold:
11S12X4567YJ1105A34567
d. Update component serial number and prefix serial number VPD
Use the following ASU command to update the component serial number and prefix serial
number VPD:
asu64 set VPD.CompVPD_SerialNumber.4 <s/n>
asu64 set VPD.CompVPD_PrefixSerialNumber.4 <prefix_s/n>
where:
• <s/n> is the 6–character component serial number.
• <prefix_s/n> is the 6–character component prefix serial number.
e. Update FRU part number in customer records and service offering support information
The FRU part number is the first seven characters following the "FRU:" of the FRU barcode. In
the following example, the FRU part number is shown in bold:
FRU:12X4567
f. Update FRU part number VPD
Use the following ASU command to update the FRU part number VPD:
asu64 set VPD.CompVPD_FRUNumber.4 "<fru_number>[sp][sp][sp][sp][sp]"
where:
<fru_number> is the 7–character FRU part number above followed by five padding spaces.
Step 11. Restart the IMM2; then, restart the server.

Removing and replacing FRUs

This topic provides information about removing and replacing FRUs.
FRUs must be replaced or installed only by trained service technicians.
The illustrations in this document might differ slightly from the hardware.
Removing a microprocessor and heat sink
This information provides instructions on how to remove a microprocessor and heat sink.
Attention:
• Be extremely careful, the microprocessor socket contacts are very fragile.
• Do not allow the thermal grease on the microprocessor and heat sink to come in contact with anything.
Contact with any surface can compromise the thermal grease and the microprocessor socket.
• Do not touch the microprocessor contacts. Contaminants on the microprocessor contacts, such as oil
from your skin, can cause connection failures between the contacts and the socket.
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System x3850 X6 and x3950 X6 Installation and Service Guide