SECTION 4. DISASSEMBLY AND SERVICE
With spring leaves compressed firmly, use
ohmmeter scale to measure resistance between
two output terminals. If measured resistance value
is infinite, replace the inching switch.
Rectifier bridge
Rectifier bridge’s internal circuit is as shown
above. Use a VOM meter to check make and break
of rectifier bridge’s each terminal.
Make and break shown in the table means the
rectifier bridge is normal
Digital VOM
meter
Use red
Use
black
test
lead to
measure
Blue
Break
Break
Make
Red
Make
Make
Make
Black
Break Break
Break
Note 1: “Continuity” refers to the diode’s on state
characteristic, it is different from short
circuiting. When inspection result of any
section fails, replace with a new rectifier
bridge.
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