Service Manuals, User Guides, Schematic Diagrams or docs for : MAKITA DC1850-TE

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DC1850-TE


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T    ECHNICAL INFORMATION
   Models No.              DC1850
                                                                                           W
                                                                                                           PRODUCT
                                                                                                             P1/4

   Description             Charger

CONCEPTION AND MAIN APPLICATIONS
   DC1850 has been developed for charging 9.6V - 18V MAKTEC
   series batteries of 1.3Ah, namely for charging the following
   batteries.
    * Battery 9050 9.6V/1.3Ah for model MT060 and MT062                        H
    * Battery 1250 12V/1.3Ah for model MT061 and MT063                                                L
    * Battery 1450 14.4V/1.3Ah for model MT064
    * Battery 1850 18V/1.3Ah for model MT065
                                                                                      Dimensions : mm ( " )
   The finish of charging process is sensed by thermostat.
                                                                             Length (L)  169 (6-5/8)
   The batteries to be charged with DC1850 are limited to                          Width (W)   86 (3-3/8)
   1.3Ah Ni-Cd batteries. Refer to the list at page 2.                             Height (H)  75 ( 2-15/16 )
 Specification
                                                                  Continuous Rating (W)
      Voltage (V)         Current (A)       Cycle (Hz)            Input           Output          Max. Output (W)
       110 - 120                              50 - 60              45
         220                                  50 - 60              45
       230 - 240                              50 - 60              45
   Output voltage (D/C)      9.6 V, 12 V, 14.4 V, 18 V
   Output current (D/C)               1.4 A
   Charging time                Approx. * 60 min.        Approx.* 60 min.: This figure may be changed depending
   Net weight: kg (lbs)             1.3 (2.9)                              on the condition of battery or room temperature.
   Cord length: m (ft)              2.0 (6.6)
                                                                   < Note >
                                                                   Because of these ribs, MAKTEC brand batteries
  Features   and benefits                                          (9050, 1250, 1450, 1850) can be inserted into
                                                                   MAKTEC brand machines/chargers only.
    Groove for MAKTEC batteries
    (9050, 1250, 1450, 1850)
                                                                                 Distinctive
                                                                                 orange color
                                                                                 for
              Charging lamp:
                                                                                 MAKTEC
              Charging lamp lights up in red color
              during charge and it will go out when
              the charging process finishes.



                                                         Battery 1850, 18V / 1.3Ah         Battery 1450, 12V / 1.3Ah

                                                                          Interchangeability
                                                                                           Battery for MAKTEC
                                                                                           series models
                                                           Charger for the existing
                                                           MAKITA models                   Battery for the existing
                      Distinctive orange color
                      for MAKTEC series model                                              MAKITA models

               Equipped with over current protector                                         Battery for MAKTEC
                                                           Charger for MAKTEC               series models
                                                           series models                   Battery for the existing
                                                                                           MAKITA models
Comparison                          of products ( Charger )                                                                 P2/4

                                              Model No.                  Maktec                     Makita
 Specifications.                                                         DC1850                     DC1803
 Out put voltage : V                                                     9.6 - 18                    9.6 - 18
                                     Maktec        1.3 Ah                  60
                            Ni-Cd
 Charging time



                                                   1.3 Ah                  60                          30
                                     Makita
                                                   2.0 Ah                                              45
                                     Maktec        2.2 Ah                                              50
                            Ni-MH                  2.6 Ah                                              60
                                     Makita
                                                   3.0 Ah                                              70
                                     Maktec         Ni-Cd          9050, 1250, 1450, 1850
  Batteries to be charged




                                                                   9120 9100, 9000,          7000, 7002,
                            Ni-Cd                                  1220, 1200, 1210, 1200A   9002, 9120 9100, 9000,
                                                                   1420                      9102, 9102A, 9122,
                                     Makita        Ni-Cd                                     1220, 1200, 1210, 1200A
                                                                                             1202, 1202A, 1222
                                                                                             1420, 1422
                                                                                             1822
                                                                                             7033,
                                                                                             9033, 9133 9134, 9135,
                            Ni-MH
                                                   Ni-MH                                     1233, 1234, 1235,
                                                                                             1433, 1434, 11435
                                                                                             1833, 1834, 1835
                            Length (L) : mm                               169                        201
  Dimensions




                                        (")                              (6-5/8)                    (7-7/8)
                            Width (W) : mm                                 86                         105
                                        (")                              (3-3/8)                    (4-1/8)
                            Height (H) : mm                                75                          78
                                        (")                            ( 2-15/16 )                 ( 3-1/16 )
         Net weight : Kg (lbs)                                           1.3 (2.9)                  0.48 (1.1)


Comparison                          of products ( Battery )

                                         Battery
                                                                       14.4V                            18V
                                                            Maktec              Makita             Maktec               Makita
 Specifications.                                      Battery 1450           Battery 1420     Battery 1850            Battery 1822
 Capacity : Ah                                               1.3                      1.3             1.3                   2.0
 Type of cell                                               Ni-Cd                    Ni-Cd           Ni-Cd                Ni-Cd
Repair                                                                                                           P3/4
< 1 > Replacing inner parts
      Unscrew 4 pcs. of tapping screws and remove charger case as illustrated in Fig. 1.

             Fig. 1

                                 Charger
                                 case




                                    Tapping
                                    screws


    ( 1 ) Replacing circuit board
         1. Disconnect the lead wires of transformer from circuit board with soldering iron. And separate old circuit board
            from transformer.
         2. Pass the two lead wires of transformer through the holes of new circuit board. And connect the lead wires to
            circuit board with soldering iron. See Fig. 2.


                                After passing the lead wires,
                                inflect them for easy connecting and
                                connect to the new circuit board
                                by soldering as this illustration.
                                                                              Transformer


         Make sure, that the 2 lead wires                                         Circuit board
         are not short circuited each other
         by the solder of overflow.
                                         Fig. 2


    ( 2 ) Replacing power supply cord
         1. Disconnect the lead wires of power supply cord from transformer with soldering iron. And take off old
            power supply cord.
         2. Pass the two lead wires of new power supply cord through the holes of transformer's terminals. And connect
            the lead wires to transformer with soldering iron.

    ( 3 ) Replacing transformer
         Refer to ( 1 ) "Replacing circuit board".
Repair                                                                                                         P4/4
   ( 4 ) Mounting charger case
         Mount charger case, with aligning the thermistor on the circuit boar with the thermistor acceptance
         of charger case. See Fig. 4.


                 Thermistor-acceptance




            Charger case




                  Thermistor




                                                                 Tapping
                                                                 screws
                                   Fig. 4



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