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HP 9020 - Page 81

HP 9020
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Table of Contents
Chapter
3:
Testing and Troubleshooting
Introduction
.....
, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-1
Troubleshooting
and
Repair Strategy
.............................................
3-1
HP-CIO
.....
,
............................................................
3-1
Repair
......
, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-3
Problem Isolation , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-3
Self-Tests
and
Diagnostics Overview
.............................................
3-4
Module Self-Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-4
Self-Test Supervisory
Code
.................................................
3-4
System Functional Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-4
Module Self-Tests, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-5
Power Supply"
.............
, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-5
Processor Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-5
Printer
......
,
..................
, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-7
Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-7
Display Interface Module
(DIM)
..............................................
3-7
98760A Standard Color Graphics Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-7
98770A High Performance Color Graphics Display . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-7
98780A Monochromatic Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-8
9130K Flexible
Disc
Drive/Controller Card
.....................................
3-8
Winchester Fixed
Disc
Drive/Controller Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-8
Bootstrap Loader Card
.....................................................
3-8
Self-Test Supervisory
Code
.....................................................
3-9
Internal
110
Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-9
Memory
......................
,
...........................................
3-9
Printer
......
,
..............................
, . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-10
Keyboard
.....................
,
..........................................
3-10
Display Interface Module
(DIM)
.............................................
3-10
98760A
Display Alpha
and
Graphics
................
,
.......................
3-10
9130K
Flexible
Disc
Drive/Controller Card
...................................
3-10
Winchester Fixed
Disc
Drive/Controller Assembly
..............................
3-10
System Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-11
98760A Display Color Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-12
Overview of the Alignment Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-12
When Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-12
Required Equipment.
.....................................................
3-12
Test Conditions
..........................................................
3-12
How It Works
.............................................................
3-13
The Intensity Adjustment
Procedure
.........................................
3-13
Early Warning/Fault Tolerance
.................................................
3-15
Overtemperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
3-15
Memory Errors
..............................
,
......
, . . . . . . . . . . . . . . . . . . .
..
3-15
Real-Time Clock/Non-Volatile Memory
(RTC/NVM)
...........................
3-16
09020-90037.
rev
1/85

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