Fig. D-5

P 11/ 11

Trouble shooting

Test for recognizing the trouble on FET (Field effect transistor) in Controller

(1)Set Digital tester (1R402) in the diode mode ( mark on the tester: Refer to Fig. D-5.)

(2)Switch, Terminal, Controller and Stator are connected each other as drawn in Fig. D-6. Do the following steps.

Test 1: Attach Black tester bar to the terminal of white lead wire end on B1 terminal of Switch. (Fig. D-7.) Attach Red tester bar to one of UVW terminal connected with Red, White, Blue lead wires. (Fig. D-8) Check the figure in the tester.

Test 2: Attach Red tester bar to minus terminal of Terminal (connected with black lead wire). (Fig. D-9)

Attach Black tester bar to one of UVW terminal connected with Red, White, Blue lead wires. (Fig. D-10)

There is no fault on FET of Controller if the tester indicates within 0.39V - 0.41V in both Test 1 and Test 2. If either Test 1 or Test 2 results in the improper figure, Controller is broken. Change Stator complete.

Fig. D-7

Switch

Black tester bar

Fig. D-6

Stator complete

(A modular part of Controller, lead wires and Stator)

TerminalSwitch

Fig. D-8

Stator complete

Red tester bar

Fig. D-9

Controller (the component of Stator complete)

Red tester bar

Terminal

Fig. D-10

Stator complete

Black tester bar

DDF481 specifications

The Makita DDF481 is a powerful and versatile cordless drill driver that stands out in the competitive power tool market. Engineered for both professional tradespeople and DIY enthusiasts, this tool combines advanced technology with user-centric design, making it an essential addition to any toolkit.

One of the standout features of the Makita DDF481 is its robust brushless motor. This technology contributes to increased efficiency and a longer lifespan for the tool. The brushless motor can deliver a maximum torque of 54 Nm, making it highly effective for various applications, including drilling into wood, metal, and plastic, as well as driving screws. This torque output allows it to perform well in tough environments, ensuring users can tackle demanding projects without worry.

The DDF481 is designed with a two-speed transmission, which provides flexibility for different tasks. The first speed allows for high torque and controlled driving, perfect for larger screws or tougher materials. The second speed, on the other hand, enables high-speed drilling, which is ideal for faster drilling in lighter materials. This adaptability makes it suitable for a wide range of jobs.

Another key characteristic of the Makita DDF481 is its 1/2-inch keyless chuck that allows for quick and easy bit changes. This feature enhances productivity by saving time during bit swaps, especially when working on projects that require different attachments.

The tool is equipped with an ergonomic grip that enhances comfort during extended use. The lightweight design further reduces user fatigue, making it easier to handle during long periods of operation. Additionally, the DDF481 is compatible with Makita's extensive range of 18V lithium-ion batteries, ensuring that users can easily find a suitable power source for their needs.

Safety features such as an electronic brake, which stops the bit immediately when the trigger is released, enhance user control and prevent accidents. The integrated LED work light is another thoughtful addition, providing visibility in dimly lit areas.

Overall, the Makita DDF481 is a feature-rich and highly efficient cordless drill driver that combines power, versatility, and user comfort. It is a reliable choice for professionals looking to enhance their productivity and for hobbyists seeking quality performance in their projects.