User`s guide

Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Comments:
Part Number: EK-SMCPO-UG. C01 File Name: d-ch3 Maintenance.doc Last Saved On: 12/4/00 1:50 PM
Chapter 3
Maintenance
This chapter describes how to interpret the status of the LEDs on the pedestal
and use them as a troubleshooting aid during a pedestal malfunction. Both the
pedestal LEDs and the LEDs on the major components are covered. The
chapter also describes how to replace a Field Replaceable Unit (FRU) and how
to reconfigure the SCSI bus.
Troubleshooting the pedestal consists of monitoring the status of the external
LEDs to determine if a major component is malfunctioning. The Field
Replaceable Units (FRUs) in the pedestal are:
■ Disk drives (SBBs)
■ RAID array controller
■ Power supplies
■ Environmental Monitor Unit (EMU) circuit board
■ Uninterruptable Power Supply (UPS)