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4. Measure resistance across the following (see figure 25):
pin 1 on connector 4a and pin 1 on connector 4b
pin 2 on connector 4a and pin 2 on connector 4b
pin 3 on connector 4a and pin 3 on connector 4b
pin 4 on connector 4a and pin 4 on connector 4b
— If the multimeter indicates an open on ANY of the above
measurements, then replace the Dynamic bus cable (4)
and retest the system.
— If the multimeter indicates less than 1 ohm on all mea-
surements, then go to the next step.
5. Unplug connector 3a from connector 2a. See diagram 2.
6. Measure resistance across the following (see figure 26):
pin 1 on connector 3a and pin 1 on connector 3b
pin 2 on connector 3a and pin 2 on connector 3b
pin 3 on connector 3a and pin 3 on connector 3b
pin 4 on connector 3a and pin 4 on connector 3b
— If the multimeter indicates an open on ANY of these
measurements, then replace the Dynamic bus cable
extension (3) and retest the system.
— If the multimeter indicates less than 1 ohm on ALL of
these measurements, then go to the next step.
7. Check connectors 1b, 4a, 4b, 3a, and 3b for damage or
corrosion.
— If damage or corrosion is present, then clear the corro-
sion or replace the damaged part and retest the system.
— If no damage or corrosion is present, then replace the
Dynamic power module (2) and retest the system.
— If replacing the power module does not resolve the
problem, then replace the Dynamic joystick (1) and
retest the system.
16
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4a
Figure 25. Connectors 4a and 4b
3a
Figure 26. Connectors 3a and 3b
Jazzy 614 with Dynamic Electronics Technical Troubleshooting Guide
Measure Resistance
Measure Resistance
1
2
3
4
Measure Resistance
Measure Resistance
Measure Resistance
Measure Resistance
1
2
3
4
Measure Resistance
Measure Resistance
1
2
4b
3
4
2
1
3b
4
3
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