HP HP-97 User Manual

HP-97
Component-Level
Maintenance
-~ GROUND . HEAD SWITCH
R
.A'e - Aok
Figure U4-23. Card Reader Switch Adjustment Screws and Test Points
WB
RB
RA
N
N \
-
L
L
\
.
« -
.
N
L
L
\
;.\
\
\
i
.:
o
\
-
o
b
Test points: Pins 11(WB) and 10(WA) Test points: Pins T(RB) and 8(RA)
of CRC (A1U3) of CRC (A1U3)
Oscilloscope time base: 2 msec/div Oscilloscope time base: 2 msec/div
Vertical gain: 2 V/div Vertical gain: 2 V/div
Figure U4-24., WA and WB Waveforms Figure 4-25. RA and RB Waveforms
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HP HP-97 Specifications

General

Brand	HP
Model	HP-97
Category	Calculator
Language	English