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2 System Description
This chapter describes the basic subsystems of the IBM
Front Panel IO (FPIO) System Board
Features
®
The IBM
•
Four switches to control power-on, reset, NMI, and the system ID LED
•
One system ID LED that can be controlled remotely or by the system ID switch
•
Two system activity LEDs that indicate power-on and NIC activity
•
Two hard drive activity/fault LEDS that indicate activity/fault status for drives 1 and 2
•
Four system fault LEDs that indicate critical, major, minor, and power system fault status
•
Four system fault relays for external critical, major, minor, and power fault indicators
•
One SCSI bus with hot-swap circuitry for controlling hot-swap SCSI disk drives 1 and 2
•
IDE Bus from IDE Connector to blind mate connector
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Floppy Bus from Floppy Connector to blind mate connector
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One blind mate connector for interfacing to CDROM or floppy drive carrier assembly
•
Connectors for interfacing to the power supply, server baseboard, drive carrier assemblies, and hot
plug disk drives 1 and 2
FPIO SCSI Subsystem Status LEDs
The status LEDs give the user a visual indication of the drives' condition. There is a single LED for
each drive. The LEDs are bi-colored and use a combination of color and blinking frequency to
indicate multiple conditions. The LEDs are mounted on the FPIO board, and the light is directed to
the front panel through the use of a light pipe assembly. See Table 6 for LED activity definitions. See
the Firmware EPS for definitions of the different blink rates.
Table 6.
LED Activity Definitions
LED State
Solid Green
Blinking Green
Blinking
Yellow/Green
Blinking
Yellow/Blank
Blank
Riser Boards
The server board supports two riser boards, a 3.3V/5V Segment B full-length riser board, and a
3.3V Segment C low-profile riser board. Features of the Segment B riser board include:
•
Support for three 33-MHz 5-Volt 64-bit PCI add-in cards
xSeries 343 Product Guide
xSeries 343 server has the following FPIO features:
Drive Active
®
Fault Condition
X
xSeries 343 server.
X
X
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