IBM 6580 User Manual

CHAPTER 10. INTERMITTENT PROBLEM DIAGNOSTIC APPROACH
INTRODUCTION Instructions
The Intermittent Problem Diagnostic
Approach is a guide to aid service
personnel in solving system problems
that appear to be intermittent. The
purpose of this diagnostic approach is
to collect data and use the
Displaywriter diagnostic aids to lead
to a repair action. These procedures
are only guidelines to aid in solving
intermittent problems. Service person-
nel can develop and use other
diagnostic approaches as knowledge of
the Displaywriter system increases.
Note: These procedures should be
used only after MAPs have failed to
isolate the problem. At all times,
follow the Required Action Guidelines.
Hardware
I
Module Isolation
I
FRU Isolation
Software
I
Normal
Escalation
Procedures
Environment
I
Normal
Escalation
Procedures
Isolation Undetermined
I
History Build
I
Normal
Escalation
Procedures
Figure 10-1. Intermittent Problem
Diagnostic Approach Flow
Chart
DATA COLLECTION
The purpose of this section is to
inform service personnel of ways to
collect general data that could lead
to intermittent problem
identification.
Collect all the available customer
information, including: the applica-
tion or job being performed at the
time of failure; the regularity of the
failure; the time of day the failure
occurs; any unusual module sounds; a
hard copy of the job; the Memory
Record Diskette; any error ~ndicators,
and similar information.
Check the system history records for
installed Engineering Changes, CEMs,
and earlier service calls that might
have caused the problem.
Review all CEMs for existing informa-
tion that may supply a solution to the
problem.
If possible, have the customer repeat
the problem.
•
•
•
•
Look for a module
failure while the
operating the system.
or function
customer is
See if the job fails in the same
place, exactly the same way.
Listen for any unusual system
sounds.
Observe what areas (modules) of
the system were operating at the
time of the failure.
Learn the sequence leading up to the
failure.
• Observe which keys are pressed.
• Look for unusual operator actions
that may cause intermittent fail-
ures.
Chapter 10. Intermittent Problem Diagnostic Approach 10-1

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English