Diagnostics And Test Information; Additional Service Information; Turning The Expansion Unit On And Off; Turning On The Expansion Unit - IBM Netfinity EXP300 Hardware Maintenance Manual

Diagnostics and Test Information

Additional Service Information

Turning the expansion unit on and off

Note: The service procedures are designed to help you isolate problems. They are
written with the assumption that you have model-specific training on all
computers, or that you are familiar with the computers, functions,
terminology, and service-related information provided in this manual and the
appropriate IBM PC/Netfinity Server Hardware Maintenance Manual.
The following is a list of problems and references for diagnosing the IBM Netfinity
EXP300 - Type 3531.
Problem
Hard Disk Drive Numbering
Error codes/Error messages
Expansion Unit options switches
Front controls and indications
Rear controls and indications
Tuning the power on and off
Power supply controls and indicators
This section contains instructions for turning the expansion unit on and off under
normal and emergency circumstances.
If you are turning on the expansion unit after an emergency shutdown or power
outage, refer to "Turning on the expansion unit after an emergency" on page 5.

Turning on the expansion unit

Use this procedure to turn on the power for the initial startup of the expansion unit.
1. Verify that:
a. All cables are properly attached.
b. Both power cords are plugged into the back of the expansion unit and into
properly grounded electrical outlets.
c. All hard disk drives are locked securely in place.
d. All switches are set correctly: the internal option switches 1 through 4,
external option switches 1 through 5, and the unit ID switch on the expansion
unit. (See "Setting the interface options and ID settings" on page 10 for more
information.)
Reference
See "Installing identification labels" on
page 35
Refer to the Symptom-to-FRU index for
the server that the Storage Expansion
Unit you are servicing is connected to.
See "Setting the interface options and ID
settings" on page 10
See "Front controls, indicators, and
devices" on page 14
See "Rear controls, indicators, and
connectors" on page 15
See "Turning the expansion unit on and
off"
See "Power-supply controls, indicators,
connectors" on page 15
Netfinity EXP300 Type 3531
3