Pub# OM22-iScan EC-OM
6-4
If any electrode exhibits no continuity or shows resistance higher than 2 ohms, refer to Procedure #4
Diagnosing EC Signal Problems.
Next, move to pin number 2 on the test box
and touch ohmmeter lead to electrode #2,
which is the front chromium carbide runner.
Figure 3.3
Next, move to pin number 3 on the test box
and touch ohmmeter lead to electrode #3,
which is the rear chromium carbide runner
with optical module.
Figure 3.4
Finally, move to pin number 4 on the test box
and touch ohmmeter lead to electrode #4,
which is closing wheel with the large silver hub
cap. Rotate wheel ¼ of a turn back and forth
as you view the ohmmeter. Any jump in the
readings above 2 ohms indicates a problem.
Figure 3.5
