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HP HP-97 User Manual
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Assembly-Level
Maintenance
3-16.
3-17.
in
table
3-4.
should
be
obtained.
Table
3-3.
Program
Memory
Test
STEP
PROCEDURE
DISPLAY
1
orr
[T
on
TRACE
2
mAN
[T
NorRm
3
prGM
[T
run
4
Read
side
1
of
program
memory
test
card.
Crd
5
Read
side
2
of
program
memory
test
card.
0.00
6
Press
222.00
FUNCTIONAL
TEST
HP-97
To
run
the
functional
test,
follow
the
step-by-step
procedures
given
After
each
step
the
indicated
display
and/or
printout
If
so,
assemble
the
calculator
and
proceed
to
the
keyboard
test
(paragraph
3-18);
if
not,
return
to
step
28
in
table
3-8.
Table
3-4.
Functional
Test
STEP
PROCEDURE
DISPLAY
PRINTOUT
1
Set
switches:
orr
[l
o~
TRACE
MAN
[T
NorRm
prGM
[T
run
2
Press
0.00
3
Read
side
1
of
functional
test
card.
Crd
4
Read
side
2
of
functional
test
card.
0.000000000
00
5
Switch
to
PRGM
mode.
000
6
Press
224
24
7
Press
001
00
8
Press
)
000
9
Press
0
001
21
11
10
Switch
to
RUN
mode.
0.000000000
00
11
Press
[}
=7.777777777-77
(pause)
Crd
12
Feed
side
1
of
data
card
1.
Crd
3-8
33
35
Table of Contents
Cover
1
Contents
4
I. General Information
9
Introduction
9
Description
9
Compatibility
9
Identification
10
Standard Accessories
11
Optional Accessories
11
II. Theory of Operation
15
HP-97 Logic
15
Display
16
Performing a Function
18
Timing
18
Program and Data ROM
19
Printer
20
Print Head Drivers
21
Printer Motor Control
21
Print Intensity Control
22
Card Reader
22
Power Supply
23
Battery Charging
24
Power-On Reset
24
III. Assembly-Level Maintenance
27
Introduction
27
Recommended Tools and Fixtures
28
Individual Key Sequence Tests
28
Full Operational Test
32
Initial Test
33
Program Memory Test
33
Functional Test
34
Keyboard Test
36
Diagnostic Test
38
HP-97 Assembly Removal and Replacement Procedures
40
IV. Component-Level Maintenance
59
Introduction
59
Recommended Tools and Fixtures
59
Logic PCA Troubleshooting
60
Power Supply Troubleshooting
60
Faulty Function Verification and Repair
60
Logic PCA Operational Test
66
Initial Test
66
Program Memory Test
66
Functional Test
70
Printer Assembly Maintenance
83
Printer Mechanical Maintenance
83
Printer Electrical Maintenance
86
Keyboard Troubleshooting
90
Display Troubleshooting
90
Cathode Driver IC Replacement
91
Card Reader Troubleshooting
96
V. Accessories
117
Introduction
117
HP 82033A Battery Pack
117
AC Adapter/Recharger
117
HP 82044A Security Cable and Lock
118
HP 82037A Reserve Power Pack
118
VI. Replaceable Parts
121
Introduction
121
Ordering Information
121
Appendix A: Improper Operations
129
Appendix B: Symbols and Abbreviations
131
Appendix C: Service Cards
135
Introduction
135
Program Memory Test Program Card
136
Functional Test Program Card
136
Data Card 1
138
Data Card 2
138
Diagnostic Test Program Cards
139
Appendix D: Service Notes
143
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HP HP-97 Specifications
General
Brand
HP
Model
HP-97
Category
Calculator
Language
English
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