Infrastructure Boards In Sparc Enterprise T5240 Servers - Fujitsu SPARC ENTERPRISE T5140 Service Manual

"Identifying FRUs in SPARC Enterprise T5140 Servers" on page 183
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"Identifying FRUs in SPARC Enterprise T5240 Servers" on page 195
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Infrastructure Boards in SPARC
Enterprise T5240 Servers
SPARC Enterprise T5240 servers are based on a 2U chassis family. The following
table provides a summary of the circuit boards used in these servers.
Board
Motherboard
Memory mezzanine assembly (SPARC
Enterprise T5240 Servers only)
Power distribution board
Power supply backplane (SPARC
Enterprise T5240 Servers only)
Paddle card
Fan power boards (2)
Description
This board includes two CMP modules, slots
for 16 FB-DIMM, memory control subsystems,
and all service processor (ILOM) logic. It also
hosts a removable SCC module, which
contains all MAC addresses, host ID, and
ILOM configuration data.
This optional assembly provides an additional
16 memory slots in addition to the 16 slots
provided on the motherboard.
This board distributes main 12V power from
the power supplies to the rest of the system.
This board is directly connected to the paddle
card, and to the motherboard via a bus bar
and ribbon cable. This board also supports a
top cover safety interlock ("kill") switch.
This board carries 12V power from the power
supplies to the power distribution board over
a pair of bus bars.
In SPARC Enterprise T5140 servers, the power
supplies connect directly to the power
distribution board.
This board serves as the interconnect between
the power distribution board and the fan
power boards, disk drive backplane, and front
I/O board.
These boards carry power to the system fan
modules. In addition, these boards contain fan
module status LEDs and transmit status and
control data for the fan modules.
Identifying Server Components 3