P 9/ 11
R
epair
[4] TROUBLESHOOTING
Symptom
Cause
Corrective action
Check List for Troubleshooting
Check the items from top of the following list. (Description of the item is referred to Circuit diagram in
Fig. D-1
.)
After corrective action, return to the start of Trouble shooting and re-check again.
Does the tester indicate 0.79V ~ 0.81V ?
When a tester cannot be prepared, go to “Yes”.
Yes
Yes
Yes
Yes
Yes
No
No
LED Job light is ON.
The machine does
not have any trouble.
Speed and Rotating
direction can be
changed with Trigger
and F/R change lever.
Rotor is rubbed to
Stator.
Motor runs when the machine
is switched on.
(Check in forward rotation
mode and in reverse rotation
mode by repeating 10 times.)
In case of running inconstantly,
go to “No”.
Battery fuel gauge
lights on.
Controller is broken.
Switch is broken.
Replace Controller.
LED Light circuit is broken
Connectors are in incomplete
connection.
Lead wires are broken.
Connect it firmly.
Check Lead wires,
or replace it.
Replace LED Light
circuit.
If your problem cannot be solved although
its corrective action has been carried out.
Replace Switch.
Yes
No
Battery fuel gauge
lights on.
No
No
No
No
Switch is broken.
Replace Switch.
Switch is broken.
Replace Switch.
Controller is broken.
Replace Controller.
Controller is broken.
Replace Controller.
Yes
Rotor is broken.
Replace Rotor.
Stator is broken.
Replace Stator.
Controller is broken.
Replace Controller.
Replace Controller.
Terminal is broken.
Check Terminal,
or replace it.
Connectors are in incomplete
connection.
Lead wires are broken.
Connect it firmly.
Check Lead wires,
or replace it.
Connect it firmly.
Yes
LED Job light is ON.
LED Light circuit is broken
Replace LED Light
circuit.
No
Switch is broken.
Replace Switch.
Connectors are in incomplete
connection.
Lead wires are broken.
Check Lead wires,
or replace it.
