HP HP-97 User Manual

HP-97 Assembly-Level Maintenance
3-25. Diagnostic Test, Part Two
3-26. To identify failure-prone data ROMs follow the procedures shown in
table 3-7. The test should be conducted at a temperature, T, that should
be as close to 40 degrees C as possible. (The limits on T are Room
temperature < T < 40 degrees C.) The test should be conducted for a minimum
of 4 hours and a maximum of 24 hours. (The 24 hour maximum may be exceeded
if required by test conditions.) The diagnostic test, part two, is mandatory
under the following conditions:
a. The logic ICs are replaced.
b. Reported failures can not be repeated.
c. No failure has been reported or is apparent.
The test may be conducted under other conditions if it is considered
desirable to do so.
3=-27. If the calculator fails the test, proceed to the component-level
tests of paragraph 4-10. If the calculator passes the test, repeat the
diagnostic test, part one.
Table 3-6. Diagnostic Test, Part One
STEP PROCEDURE DISPLAY PRINTOUT
1 Set switches:
OFF I ON
TRACE
MAN (MM NORM
PRGM I RUN
2 Read side 1 of diagnostic
test part one card. CRD
3 Read side 2 of diagnostic
test part one card. 0.00
4 Press A (flashing) £
5 XE¥
-8.888888888-88 -g&.a:s ¥E¥

HP HP-97 Specifications

General

Brand	HP
Model	HP-97
Category	Calculator
Language	English