Troubleshooting - Makita XBU02 Repair Manual

R
epair

[4] TROUBLESHOOTING

Whenever you find any trouble in your machine, refer to this chapter first.
Note in Repairing
(1) Use a 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.), Rotor, Stator, Gear section, etc.
(3) Do a running test 10 times.
Test for recognizing the trouble on FET (Field effect transistor) of 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).
１.１
3. Connect Black test probe to the plus pole,
Red test probe to minus pole of Terminal.
And, check the value display on the tester.
Note: Be careful not to connect the probes in reverse.
Red test probe
(-) pole
2. After removing the battery from the machine,
lock Switch lever to ON position by pushing
Lock ON button.
Lock ON
button
4. Wait until the reading is stable.
If it reads within 0.9V - 1.3V,
there is no fault on FET of Controller.
If it reads 0V or 0.4V approx., Controller is
broken. Replace it with a new one.
P 9/ 13
Fig. T -1
Star mark
Switch lever
Black test probe
(+) pole