IBM EXP15, Installation And User Handbook

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Rear Controls, Indicators, and Connectors.
Note: The IBM ServeRAID, ServeRAID II, ServeRAID-3H,
ServeRAID-3L adapters and the Netfinity Fibre Channel
Controller Unit only provide support for the amber Fault
LEDs.
Rear Controls, Indicators, and Connectors
The four CRUs (customer replaceable units) and one environmental
services monitor (ESM) board are accessible from the back of the
expansion unit. These components contain several user controls,
indicators, and connectors.
ESM Board User Controls
SCSI Bus 1 Connector
SCSI Bus 2 Connector
Lever
Option Switches
Tray Number Switch
Term Power LED Term Power LED
ESM Board FRU
Lever
Over Temp LED
LVD/SE LED
LVD/SE LED
Power LED
Active LED Active LED
ESM Board FRU: This board contains the SCSI controls,
switches, and LEDs.
SCSI Bus Connectors: These 68-pin VHDCI connectors are
for attaching your SCSI cables.
Levers: Use the locking handles for removing and inserting
the ESM boards into the expansion unit.
Note: The levers are used by the service technicians only to
remove the ESM board.
Chapter 1. Introduction
5