Panasonic 7441LF Manuale utente

bution is a violation of law.

Order Number PTD1007X51CE

Cordless Drill & Driver / Cordless Hammer Drill & Driver

Model No. EY7441

(Cordless Drill & Driver)

Model No. EY7940

(Cordless Hammer Drill

& Driver)

Europe and Oceania

TABLE OF CONTENTS

PAGE PAGE

1 Warning -------------------------------------------------------------- 2

2 Specifications ----------------------------------------------------- 2

3 Troubleshooting Guide ----------------------------------------- 3

4 Disassembly and Assembly Instructions ---------------- 7

5 Wiring Connection Diagram ---------------------------------15

6 Schematic Diagram ---------------------------------------------15

7 Exploded View and Replacement Parts List -----------16

1Warning

Caution:

• Pb free solder has a higher melting point that standard solder; Typicall the melting point is 50 - 70°F (30 - 40°C) higher. Please

use a soldering iron with temperature control and adjust it to 750 ± 20°F (400 ± 10°C). In case of using high temperature solder-

ing iron, please be careful not to heat too long.

• Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).

2 Specifications

2.1. EY7441 MAIN UNIT

2.2. EY7940 MAIN UNIT

2.3. MAXIMUM RECOMMENDED CAPACITIES

3 Troubleshooting Guide

(Refer to Wiring Connection Diagram)

3.1. Trial Operation (after checking Troubleshooting Guide.)

3.1.1. ASSEMBLY

1. Confirm if there is NO gap between Housing A and B by pinching the lead wires.

2. Confirm all screws are tightened firmly.

3. There should be no abnormal sound when shaking the unit.

4. There is no dust or deformation on battery terminals.

5. Confirm if there is no dirt when repairing.

3.1.2. OPERATION

1. Confirm the forward and reverse side of rotation.

2. Confirm if LED rights ON. Once battery pack is removed, press the switch handle; otherwise LED does not right ON.

3. Confirm if the tools may not become hot in a short operation.

4. Confirm the action when setting the DRILL mode.

5. Confirm if the chuck jaws move smoothly and hold the bit firmly.

only for EY7940

6. Confirm no vibration on reverse side.

3.1.3. SWITCH

1. Confirm the rotation of speed if it changes between 200-1400 ± 140 rpm in proportion to the amount of pushing level on switch

handle on HIGH mode and 70-400 ± 40 rpm on LOW mode.

2. Confirm if the rotation stops when releasing the switch handle.

3.1.4. CLUTCH

1. Check if the clutch torque changes suited for the number of clutch.

4 Disassembly and Assembly Instructions

4.1. How to disassemble Plate hoot and Keyless chuck.

Ref. No. 1A Procedure 1A Removal of Plate hook.

(Removal)

1. Loosen a screw.

2. Take out the plate hook.

Ref. No. 2A Procedure 2A Removal of the Housing.

NOTE:

When attaching or removing a bit, disconnect battery pack from tool.

1. Set the clutch handle to position and select “LOW” position.

2. Turn the lock collar counterclockwise (looking from the front) to open

the chuck jaws.

3. Use a screwdriver to turn the chuck fastening screw inside the chuck

clockwise direction of the arrow, and remove the screw.

NOTE:

If the chuck fastening screw will not come loose, insert the allen

wrench into the chuck and lightly tap in the clockwise direction with a

hammer to tighten the chuck, and then loosen the chuck fastening

screw.

4. Insert the allen wrench into the chuck, and turn counterclockwise

direction in the arrow with holding the unit by the vise to remove the

chuck.

4.2. How to disassemble Main unit.

Ref. No. 3A Procedure 3A Removal of the Housing.

1. Remove 8 housing screws.

Ref. No. 3B Procedure 3A →3B Removal of Motor screw.

(Removal)

1. Remove 2 screws.

Ref. No. 3C Procedure 3A →3B →3C Removal of Switch and Driving block.

(Removal)

1. Take out the switch assembly.

2. Take out the driving block.

3. Separate the motor from the gear box block by twisting the motor

to unlock tabs.

Ref. No. 3D Procedure 3A →3B →3C →3D Removal or assembly of Control PCB.

(Removal)

1. Take out the connector from the control PCB.

NOTE:

Make sure hold the connector at the bottom area.

(Assembly)

1. Apply the grease around the tact switch.

2. Insert the connector.

Ref. No. 3E Procedure 3A →3B →3C →3D →3E Removal or attachment of the Gear Box Block.

(Removal)

1. Turn the thrust plate to remove.

2. The internal parts of gear box block can be removed one after

another.

(Attachment)

1. Start from inserting 6 pins into the driving block as shown in the fig-

ure.

2. Assemble the other parts in reverse order as shown in the figure.

NOTE:

Carriers and Ring Gears have their own correct directions for

proper reassembly.

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