Table of Contents
Advertisement
3. Troubleshooting and Fault
Clearing Procedures
Troubleshooting usually begins when someone, such as a user or the system
administrator, notices a symptom of a fault. It may be that a piece of
equipment is not functioning properly, an alarm has been generated, or the
system has displayed a fault message on the notification line of the terminal
screens or on the liquid crystal display (LCD) of the SASI Primary Processor.
(The Primary Processor is typically located in the first or second cabinet from
the left, as viewed from the front.)
The system administrator also has access to the system's self-diagnostics and
fault reporting software to periodically check the operating status of all shared
resource units (SRUs), remote resource units (RRUs), and program resource
units (PRUs). Units can be taken out of service manually at any time, and are
automatically taken out of service if identified as faulty by the system's
self-diagnostics.
The self-diagnostics operate under control of the Maintenance Service of
System Administrative Services. This service displays and tests the status of
resource units. On notification of a fault, the system administrator can access
this service, potentially identify and isolate the fault, and take the faulty unit
out of service. Corrective action may then be taken.
For software faults, the problem can be cleared by reloading the PRU. This
action can be performed by the system administrator using the instructions in
Part 25 of the Guide to System Administrative Services, 450-1011-301.
If the fault is hardware-related, the system administrator should contact the
appropriate maintenance personnel according to the terms of the customer's
maintenance contract or other maintenance arrangement. The maintenance
personnel are responsible for replacing faulty equipment.
In some cases, the fault may not be identified by the system's
self-diagnostics. In such a case, refer to Table 3-A for troubleshooting
procedures. If a hardware unit is faulty, remove it and install a spare
according to the procedures of the Installation Guide for Cabinet Systems,
11
Practice 450-1011-501
Advertisement
Table of Contents
