Test For Recognizing The Trouble On Controller - Makita DHP480 Technical Information

T
rouble shooting

Test for recognizing the trouble on Controller

(1) Set Digital tester (1R402) to the diode mode.
(2) Attach the tester bars as drawn in Figs. T-2 and T-3.
Fig. T-2
1. Attach Tester bar (black) to the terminal of
Lead wire (white) which is connected to Switch.
Tester bar (black)
2. Attach Tester bar (red) to any of UVW
terminals of Stator unit (orange, white or
blue lead wires).
UVW terminals
Switch
B2
B1
(3) There is no fault on Controller if Digital tester (1R402) indicates within 0.39V - 0.41V in the both tests.
If not, Controller is broken. Replace it with a new one.
Lead wire (white)
Tester bar (red)
Stator
Controller
T+
Terminal
AS
T-
Digital tester
Fig. T-3
1. Attach Tester bar (red) to (-) Pole of Terminal
to which Lead wire (black) is connected.
Tester bar (red)
2. Attach Tester bar (red) to any of UVW terminals
of Stator unit (orange, white or blue lead wires).
UVW terminals
Switch
B2
P 12/ 12
Terminal
Tester bar (red)
B1
Stator
Controller
T+
Terminal
AS
T-
Digital tester