Makita HP332D Technical Information page 17

R
epair
[4] TROUBLE SHOOT
Check List for Trouble Shooting 1
Check the items from top of the following list. (Description of the item is referred to Circuit diagram in Fig. D-1.
Make re-check, after corrective action, returning to the start of Trouble shooting.
Symptom
The Tester designate
0.7V ~ 0.9V?
Yes Yes
Do the running test to pull
the trigger by repeating 10
times in F mode, and 10
times in R mode.
In case of running
inconstantly, go to "No".
No
Motor does not rotate
normally, and Scratch
is recognized on Core
of Rotor.
If the machine shows same symptom,
in spite of the above corrective actions
No
No
LED light is ON.
Yes
The machine does
not have any trouble.
No
LED Job light
is ON.
Yes
No
Yes
No
No
Cause
Breakage of Controller
Disconnection of
Lead wires
Breakage of LED
light circuit
Incomplete connection
of Connectors
Disconnection of
Lead wires
Switch is broken.
Trouble in Terminal
Breakage of Controller
Incomplete connection
of Connectors
Disconnection of
Lead wires
Breakage of Controller
Rotor is broken.
Stator is broken.
Breakage of Controller
P 17/ 20
Corrective action
Replace Controller.
Check the Lead wires,
or replace the Lead
wires.
Replace LED light
circuit.
Check the connected
condition of Connectors.
Check the Lead wires,
or replace the Lead wires.
Replace Switch.
Check the Terminal, or
replace with fresh one
Replace Controller.
Check the connected
condition of Connectors.
Check the Lead wires,
or replace the Lead wires.
Replace Controller.
Replace Rotor.
Replace Stator.
Replace Controller.