Makita DC1804 (MJ) Manual

Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output(W)
110 - 120
120
220
220 - 240
230 - 240
Models No.
Description
PRODUCT
Current (A)
TECHNICAL INFORMATION
CONCEPTION AND MAIN APPLICATIONS
Specification
P 1 / 3
Dimensions : mm ( " )
Width ( W )
Height ( H )
Length ( L )
50 / 60
50 / 60
50 / 60
50 / 60
50 / 60
HL
W
193 (7-5/8)
92 (3-5/8)
78 (3-1/16)
75
75
75
75
75
Cord length : m (ft )
Net weight
Output voltage DC : V
Output current : A
Charging
time : min.
for 1.3Ah Ni-Cd. battery
for 2.0Ah Ni-Cd. battery
for 2.2Ah Ni-MH. battery
for 2.6Ah Ni-MH. battery
for 3.0Ah Ni-MH. battery
Approx. 30
Approx. 45
Approx. 50
Approx. 60
Approx. 70
7.2
2.6
9.6 12 14.4 18
Protection against
electric shock 110V - 120V
220V - 240V
grounding (earthing)
double insulation
2.0 (6.6)
0.39 (0.86)
DC1804
Charger
Multi voltage charger DC1804 is the renewed model of DC1803.
Its features and benefits are
(1) Approx. 10-20 minutes shorter charging time in comparing
with DC1801.
(2) Maintenance (trickle) charging system keeps the full charged
condition for 24 hours, even if the battery is left in this charger
after finishing of charging process.
(3) Downsized ; The dimensions have been reduced to those of DC1413.
< Note > The above figures about charging time may differ from condition to condition on batteries' temperature
or room temperature.

P 2 / 3
Repair
< 1 > The circuit board cannot be repaired, because the circuit itself is molded on the board .
It has to be replaced entirely with new one.
< 2 > In case of damaged varistor or fuse, they can be repaired according to the following procedure without
replacing the circuit board.
(2) How to find broken fuse (F2)
a. If the charging light flashes alternately red and green, when the battery has been inserted into the charger
connected with power source, fuse (F2) may be broken.
b. If the easily conductive material other than battery would be connected with charger's terminals
by mistake, fuse (F2) can be easily broken by short circuit in the charger.
c. In case of no damaged fuse (F2) but charging light flashing alternately red and green, the charger can be broken
for other reason. The circuit board has to be replaced in this case.
(1) How to find broken varistor
a. In case that the surface of varistor has broken or has become black, and fuse (F1) has been disconnected,
the varistor has been damaged.
b. Varistor can be damaged easily, if the charger is plugged in a double voltage of the rating one.
c. In case of no damaged varistor but disconnected fuse (F1), the charger can be broken for other reason.
The circuit board has to be replaced in this case.
C2 T1
L1
TH1
VS1
F1 F2
CN1
LED1
LED2
Q1
C1
Power supply cord
Varistor
Fuse (F1) Fuse (F2)
Top view of circuit board

Repair P 3/ 3
(3) Replacing damaged varistor
a. Varistor is assembled on circuit board with solder. Remove it from circuit board
with soldering iron.
(4) Replacing damaged fuse
a. Fuse is assembled on circuit board with solder. Remove it from circuit board with soldering iron.
b.Assemble new fuse to the circuit board by soldering.
c. Cut the surplus of fuse's wire with nipper.
b.Assemble new varistor to the circuit board by soldering.
c. Cut the surplus of varistor's wire with nipper.
Varistor Circuit board
When removing varistor, melt this part with soldering iron
and remove varistor.
Varistor
Circuit board
Less than 3mm
Fig.2
Fig.3
Fig.4
Fuse
When removing fuse, melt this part with soldering iron
and remove fuse.
Less than 3mm