8-3
Flowchart of Troubleshooting
Check the items from the top of the following list. (Description of the item is referred to Circuit diagram in
Fig. 6-1
.
After corrective action, return to the start of Troubleshooting and re-check again.
Symptom
Cause
Corrective action
No
Controller is broken.
Replace Controller.
Lead wires are broken.
Check Lead wires, or
replace it.
No
Yes
Does Tester indicate 0.7V ~ 0.9V?
When tester cannot be prepared, go to “Yes”.
Controller is broken.
Replace Controller.
The machine shows same symptom in
spite of the above corrective actions.
LED circuit is broken
Replace LED circuit.
The machine
works properly.
Yes
LED Job light is
ON.
Motor runs when the machine is
switched on.
Try 10 times. In case of running
inconstantly, go to “No”.
Yes
No
Connectors are in
incomplete connection.
Connect them firmly.
Lead wires are broken.
Check Lead wires, or
replace it.
Switch is broken.
Replace Switch.
Terminals are broken.
Check Terminal, or replace
it.
Replace Controller.
Controller is broken.
No
Yes
LED Job light
is ON.
Connectors are in
incomplete connection.
Connect them firmly.
Lead wires are broken.
Check Lead wires, or
replace it.
Controller is broken.
Replace Controller.
Rotor is broken.
Replace Rotor.
Stator is broken.
Replace Stator.
Unusual behavior occurs during
work./ Rotor is rubbed Stator.
No
Yes
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