Diode Assemblies
Diodes D1, D2 and D3 provide logic for the latch relays
used in the ProCore 648. Diode D4 is used for circuit
protection from voltage spikes when the electric clutch
is de–energized. The diodes plug into the wiring har•
ness at various locations (see Wire Harness Drawings
in Chapter 8 – Electrical Diagrams).
2
Diode Test
3
1
The diodes (Fig. 37) can be individually tested using a
digital multimeter (diode test or ohms setting) and the
table to the right.
Figure 37
1.
2.
Diode
Male terminal
3.
Female terminal
Multimeter
Red Lead (+)
on Terminal
Multimeter
Black Lead (–)
on Terminal
Continuity
Female
Male
Male
YES
NO
Female
ProCore 648
Electrical System
Page 5 – 27
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