Sun Microsystems Sun Fire X4140, Руководство по обслуживанию

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1-4 Sun Fire X4140 Server Service Manual • September 2010
1.2.1 Infrastructure Boards
The Sun Fire X4140 Server infrastructure boards are listed in
TABLE 1-2
.
TABLE 1-2
Infrastructure Boards
Board Description Reference
Motherboard
FRU The motherboard includes processor modules, slots for 16
DIMMs, memory control subsystems, and the service processor
(Integrated LOM) subsystem.
The server motherboard provides an integrated lights out
management (ILOM) service processor function, which includes
remote boot and remote software upgrades. The service
processor (ILOM) subsystem controls the host power and
monitors host system events (power and environmental). The SP
ILOM controller draws power from the host’s 3.3V standby
supply rail, which is available whenever the system is receiving
AC input power, even when the system is turned off. Section 4.6, “Servicing
the Motherboard
Assembly” on page 4-21
Refer to the Sun Fire
4140, 4240 and 4440
Server Diagnostics
Guide for ILOM sensor
information.
Refer to the
Sun
Integrated Lights Out
Manager User's Guide
Power
distribution board
FRU This board distributes main 12V power from the power supplies
to the rest of the system. It is directly connected to the paddle
card, and to the motherboard via a bus bar and ribbon cable. It
also supports a top cover interlock (“kill”) switch.
In the Sun Fire X4140 Server, the power supplies connect directly
to the power distribution board. Section 5.6, “Servicing
the Power Distribution
Board (PDB)” on
page 5-15
Paddle card
FRU This board serves as the interconnect between the power
distribution board and the fan power boards, Drives backplane,
and I/O board. Section 5.7, “Servicing
the Paddle Card” on
page 5-17
Fan power boards
(2)
FRU These boards carry power to the system fan modules. In
addition, they contain fan module status LEDs, and they transfer
I
2
C data for the fan modules.
Section 5.2, “Servicing
the Fan Power Boards”
on page 5-4
Drives backplane
FRU This board includes the connectors for the drives, as well as the
interconnect for the I/O board, Power and Locator buttons, and
system/component status LEDs. The Sun Fire X4140 Server has
an eight-disk backplane. Each drive has an LED for
power/activity, fault, and ok-to-remove. Section 5.4, “Servicing
the Drives Backplane”
on page 5-11
Front I/O board
FRU This board carries the front panel USB connections from the
drives backplane. The board connects directly to the drives
backplane. It is packaged with the DVD drive as a single unit. Section 5.1, “Servicing
the DVD/USB Module”
on page 5-2
PCIe risers
FRU In the Sun Fire X4140 Server, each riser supports two PCIe cards.
There are three risers per system, each attached to the rear of the
motherboard. Section 4.3, “Servicing
PCIe Risers” on
page 4-13