IBM xSeries 380, Hardware Maintenance Manual

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Hardware Maintenance Manual: xSer ies 380
Processor baseboard
The Processor Baseboard resides between the two halves of the Processor/Memory
Complex. The board accommodates one to four processors and two memory boards.
Removal of the Processor Baseboard involves disassembly of the entire
Processor/Memory Complex.
Processor baseboard removal
Note:
• Read “Before you begin” on page 136.
• Read “Safety information” on page 257.
• Read “Handling electrostatic discharge-sensitive devices” on page 260.
Complete the following actions to remove the processor baseboard:
1. Remove the Processor/Memory Complex from the system as described in
“Processor/memory complex removal” on page 177.
2. Remove the topside memory board from the Processor/Memory Complex as
described in “Memory board removal” on page 184.
3. Remove the topside processors as described in “Power pod, processor or thermal
blank removal” on page 181.
4. Carefully turn the Processor/Memory Complex over so that you can work on its
underside.
5. Repeat steps 2. and 3. to remove components and hardware from this side of the
Processor Baseboard.
Note: If the server does not have three or four processors, the underside of the
Processor Baseboard will have thermal blanks in place of the processors
and power pods. These assemblies are easily removed when you lift the
triple beam off the board.
6. With all components and hardware removed from both sides of the
Processor/Memory Complex, carefully turn it over again so that it is oriented
with its face up.