Chattanooga SENIOR SOLUTIONS, Service Manual

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Senior Solutions™ Therapy System
5 TROUBLESHOOTING
5.12 HIGH VOLTAGE PULSED CURRENT
HVPC
MODE TEST
Set up Unit per 5.6 parts A and B prior to performing
tests.
A. High Voltage Pulsed Current (HVPC) Mode
Test Procedures
Set Scope; Time- 25 μS, Channel- 50 V, and
Trigger- DC.
Press Electrotherapy button.
Press High Volt button.
Rotate Therapy Intensity Control clockwise until
250 Volts is displayed.
Press START button.
Compare waveform on scope to
Figure 5.12.
Press Edit button.
Press Polarity button until Positive is displayed in
Polarity icon.
Compare waveform form on scope to
Figure
5.13.
Press Display button until Peak Current is
displayed in the Display icon.
The numbers displayed for amplitude must not
exceed 1.5 Amps.
See Figure 5.14.
Press STOP.
B. High Voltage Pulsed Current (HVPC) Mode
Test
Results
Waveforms on scope the same as Figures 5.12
and 5.13 and Amps do not exceed 1.5.
Unit passed test.
No waveform or considerably different
waveforms.
Unit failed test. Replace appropriate Stim
Board.
Amps exceed 1.5.
Unit failed test. Replace appropriate Stim
Board.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
1.
2.
3.
PROPER POSITIVE HIGH VOLT WAVEFORM
FIGURE 5.12
PROPER NEGATIVE HIGH VOLT WAVEFORM
FIGURE 5.13
FIGURE 5.14
AMPS MUST NOT
EXCEED 1.5