Trouble Shoot; Note In Repairing; Test For Recognizing The Trouble On Fet In Controller - Makita DHS680 Technical Information

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[4] TROUBLE SHOOT

Whenever you find any trouble in your machine, first, refer to this list to check the machine for solution.

Note in Repairing

(1) Use the full charged battery that has a star mark. (Fig. T-1)
(2) When Housing is disassembled, check the conditions of the electrical parts
(Connectors, Lead wires, Switches, etc.), Rotor, Stator, Gear section, etc.
(3) Do the running test 10 times in every work mode.
Test for recognizing the trouble on FET (Field effect transistor) in Controller
Trouble on Controller can be checked with Tester as follows.
Fig. T-2
1. Set Digital tester (1R402) in the diode mode
( mark on the tester).
3. Attach Black tester bar to the plus pole,
Red tester bar to minus pole of Terminal.
And, check the figure in the tester.
Note: Be careful not to attach the bars in reverse.
2. After removing the battery from the machine,
pull Switch trigger and hold it at "ON position"
with tape or the like.
4. There is no fault on FET of Controller
if the tester indicates within 0.79V - 0.81V.
If it indicates 0V or 0.4V approx.,
Controller is broken. Replace it with a new one.
P 17/ 18
Fig. T-1
Star mark