Panasonic EY7546 User manual

© Panasonic Electric Works Co., Ltd. 2011.
All rights reserved. Unauthorized copying and distri-
bution is a violation of law.
Order Number PTD1103X37CE
Cordless Impact Driver / Cordless Impact Wrench
Model No. EY7546
EY7550
(Cordless Impact
Driver)
Model No. EY7547
EY7551
(Cordless Impact
Wrench)
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 ---------------------------------13
6 Schematic Diagram---------------------------------------------13
7 Exploded View and Replacement Parts List -----------14

2
1Warning
Caution:
• Pb free solder has a higher melting point that standard solder; Typically 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. MAIN UNIT
2.2. MAXIMUM RECOMMENDED CAPACITIES

3
3 Troubleshooting Guide
3.1. Troubleshooting Guide(Refer to Wiring Connection Diagram)

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5

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3.2. Trial Operation (after checking Troubleshooting Guide.)
3.2.1. 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 metallic sound and abnormal sound.
4. There is no dust or deformation on battery terminals.
5. Confirm if there is no dirt when repairing.
3.2.2. OPERATION
1. Confirm the forward and reverse side of rotation.
2. Confirm if LED rights ON. Once battery pack is removed and attached, press the switch handle, otherwise LED does not right
ON.
3. Confirm the rotation of speed if it changes in proportion to the amount of pushing level on switch handle.
4. Confirm if the rotation stops when releasing the switch handle.
5. Confirm the smooth movement of the bit holder.
6. Confirm the impact operation.

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4 Disassembly and Assembly Instructions
Ref. No. 1A Procedure 1A Removal of Housing.
1. Loosen a screw.
2. Take out the plate hook.
3. Remove nine housing screws.

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Ref. No. 1B Procedure 1A →1B Removal of Motor assembly and Driving shaftassembly..
1. Take out the motor assembly with the driving shaft assembly from
the housing.
2. Separate the motor assembly from the driving shaft assembly with
holding the motor mounting plate.
3. Pull off the fixation cover assembly.

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Ref. No. 1C Procedure 1A →1B→1C Removal of Battery terminal base assembly.
1. Hold the switch and the battery terminal base assembly.
2. Pull out the quick-connect terminal by something like the stop ring
removal pliers.
NOTE:
Make sure to pull out straight away.
Ref. No. 1D Procedure 1A →1B →1C →1D Removal or attachment of FPC.
(Removal)
1. Slightly pull up the connector.
NOTE:
Connector is not able to remove from the control PCB.
2. Pull out FPC.
NOTE:
Make sure to handle FPC gently in order to avoid the breakage.
(Attachment)
1. Apply the grease on the places where insert into the connectors.

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Ref. No. 1E Procedure 1A →1B →1C→1D →1E Removal or assembly of module assembly.
(Removal)
1. Pull out the connector from the module assembly.
NOTE:
Make sure hold the connector at the bottom area.
(Attachment)
1. Apply the permalub grease around the tact switch and connectors.
NOTE:
Make sure to apply the grease to keep IP56.
2. Insert the connector firmly.