Cub Cadet CC 500 EL - Manual (Page 14)

ELECTRICAL SYSEM
10
Diodes
A diode acts like a one way valve. They allow current to
flow in only one direction. There will be a band on one
end of the diode. This indicates the negative side of the
diode. Most DVOMs have the ability to test a diode.
See Figure 2.13.
Testing a diode
1. Isolate the diode in the circuit.
2. Set the DVOM to the diode scale.
See Figure 2.14.
3. Attach the negative lead of the DVOM to the side
of the diode with a band on it.
4. Place the positive lead on the other side of the
diode.
5. There should be continuity. See Figure 2.15.
6. Switch the leads.
7. The meter should indicate no continuity.
See Figure 2.16.
8. If the results do not match the above, replace the
diode.
Figure 2.13
Silver band
(-)
(+)
electrons flow from the negative to the positive.
Figure 2.14
Diode scale
Figure 2.15
Continuity
Silver band
(-)
(+)
Figure 2.16
No continuity
Silver band
(-) (+)