Trouble shooting, Check List for Trouble Shooting

P 10/ 11

Trouble shooting

Whenever you find any trouble in your machine, first, refer to this list to check the machine for solution.

Note in Repairing

(1)Use the full charged battery which has the star mark. (Fig. D-4)

(2)When Housing is disassembled, check the conditions of the electrical parts (Connectors, Lead wires, Switches, etc.), Armature, Stator, Gear section, etc.

(3)Do the running test in Low speed mode (when the trigger is being pulled just a little) to check the following functions by repeating 10 times;

• F/R change lever • Operation mode change ring • High/Low speed change lever

•Variable speed control trigger

Check List for Trouble Shooting

Fig. D-4

Star mark

Check the items from the top of the following list. (Description of the item is referred to Circuit diagram in Fig. D-1.) Change Stator complete if your problem cannot be solved although its corrective action has been carried out.

Symptom

Cause

Corrective action

			LED indicator lamps
			are on.
			Yes
			Yes

			Rotation speed can
			be changed.
			Forward/ Reverse
			rotation are OK
Yes			Yes

Motor runs when the machine is switched on.

In case of running inconstantly, go to “No”.

No	LED job light are on.

Yes

The machine does not have any trouble.

Controller is broken.

Connectors are in incomplete connection.

Lead wires are broken.

Switch is broken.

Connectors are in incomplete connection.

Lead wires are broken.

LED circuit is broken.

Switch is broken.

Replace Stator complete. (See the next page.)

Connect it firmly.

Check Lead wires, or replace it.

Replace Switch.

Connect it firmly.

Check Lead wires, or replace it.

Replace LED circuit.

Replace Switch.

LED indicator lamps are on.

Yes

LED job light are on.

Yes

Rotor is rubbed to Stator.

Yes

Terminal is broken.

Controller is broken.

Connectors are in incomplete connection.

Lead wires are broken.

Switch is broken.

LED is broken.

Controller is broken.

Rotor is broken.

Stator is broken.

Check Terminal, or replace it.

Replace Stator complete.

Connect it firmly.

Check Lead wires, or replace it.

Replace Switch.

Replace LED.

Replace Stator complete. (See the next page.)

Replace Rotor.

Replace Stator complete.

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.