Introduction
AC Repair and Adjustment Procedures
4
Cray Research/Silicon Graphics Proprietary
HMM-168-A.1
Introduction
This document guides you in removing and replacing the field replaceable units
(FRUs) of the CRAY T3E air-cooled (AC) cabinet. This document includes a
list of FRUs, on-site spares, and tools for the CRAY T3E AC cabinet. It also
includes procedures for parts that need periodic maintenance.
This document does not contain power-on and power-off procedures. Refer to
the AC Power, Control, and Electromechanical Troubleshooting document,
Cray Research publication HMM-169-0, for power-on and power-off
procedures.
NOTE:
Service personnel who are not Cray Research employees should
perform only procedures that are specified in their maintenance
agreements.
The following general instructions apply to all procedures in this document:
•
Review the entire procedure before you perform any steps.
•
Remember that the tools list for a given procedure does not include the
hex wrench required to open cabinet doors or the tools required to
complete additional tasks that are documented under a different
procedure.
•
Label, or otherwise record the locations of, every wire or cable that you
disconnect during a procedure.
•
Inspect all replacement parts for evidence of physical damage when you
receive them.
Safety and ESD Precautions
Observe safety and ESD precautions during all replacement processes. Required
apparel includes an ESD smock, ESD wrist strap, and ESD shoes or shoe straps.
For further information on safety and ESD, read the Safety and ESD Guidelines,
Cray Research publication HGM-016-A.
Most CRAY T3E AC repair procedures require that you unplug the cabinet and
install, lock, and tag the plug with an electrical plug lockout device
(P/N 15255100).