Check List For Trouble Shooting - Makita DGA405 Technical Information

R
epair
[4] TROUBLE SHOOTING
Whenever you find any trouble in your machine, first, refer to this list to check the machine for solution.
Note
(1) Use the full charged battery which has the star mark. (Fig. T-1)
(2) When Housing is disassembled, check the conditions of the electrical parts
(Connectors, Lead wires, Switches, etc.), Armature, Stator complete, Gear section, etc.

Check List for Trouble Shooting

Check the items from the top in Fig. T-2. (Description of the item is referred to Circuit
diagram in Fig. D-1 of page 10.)
Repeat the check of the corrective action ten times.
Fig. T-2
The Tester designates between
0.79 and 0.81V by the steps
shown in Fig. T-3 of page 9.
In case the tester is not ready,
go to "Yes"
Yes Yes
Motor runs when the machine
is switched on (in forward and
reverse mode;10 times each)
In case of running inconstantly,
go to "No".
No
All 3 stages of Battery power
remaining lamp are on.
See "Lamps on Housing set".
Lamps on Housing set
(a): Mode lamp (green)
If Green lamp is ON, the machine is
automatically set in High Torque mode.
(b),(c), (d): Battery power remaining lamp
In spite of the above corrective actions,
the machine shows same symptom.
Symptom
Lamp (a) is ON.
See "Lamps on
Housing set".
No
All of Lamps (b), (c),
(d) are ON.
See "Lamps on
Housing set".
Yes
The function does
not have trouble.
Yes
Scratch on the core of
Rotor or mechanical
trouble is recognized.
Yes
Cause
No
Controller is broken.
Mechanical trouble
Yes
occurs.
Controller is broken.
No
Controller is broken.
Connectors are
No
disconnected.
Lead wires are
disconnected.
Switch is broken.
Terminal is broken.
Controller is broken.
Connectors are
disconnected.
No
Lead wires are broken.
Controller is broken.
Rotor ass'y is broken.
Stator complete is
broken.
Controller is broken.
P 8/ 11
Fig. T-1
Star mark
Corrective action
Replace Controller.
Check the engagement of
Gears and Rotor ass'y or
condition of mechanical
parts.
Replace Stator complete*.
Replace Stator complete*.
Check Connectors,
or replace them.
Check Lead wires, or
replace the broken wire(s).
Replace Switch.
Check Terminal,
or replace it.
Replace Stator complete*.
Check Connectors or
replace them.
Check Lead wires, or
replace the broken wire(s).
Replace Stator complete*.
Replace Rotor ass'y.
Replace Stator complete.
Replace Stator complete*.
*It includes Controller.