Panasonic EY74A2 Service Manual
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Panasonic EY74A2 Service Manual

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1 Warning -------------------------------------------------------------- 2
2 Specifications ----------------------------------------------------- 2
3 Troubleshooting Guide ----------------------------------------- 3
5 Wiring Connection Diagram ---------------------------------13
6 Schematic Diagram ---------------------------------------------13
Model No.
Europe
Oceania
PAGE
© Panasonic Corporation 2015. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
ORDER NO. PTD1507X58CE
Cordless Drill & Driver
EY74A2
PAGE
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Summary of Contents for Panasonic EY74A2

  • Page 1: Table Of Contents

    4 Disassembly and Assembly Instructions ---------------- 7 5 Wiring Connection Diagram ---------------------------------13 6 Schematic Diagram ---------------------------------------------13 7 Exploded View and Replacement Parts List -----------14 © Panasonic Corporation 2015. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Warning

    1 Warning 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 soldering iron, please be careful not to heat too long.

  • Page 3: Troubleshooting Guide

    3 Troubleshooting Guide 3.1. Troubleshooting Guide...
  • Page 6 3.2. Trial Operation (after checking Troubleshooting Guide). 3.2.1. Assembly • Confirm if there is no gap between housing A, B and C by pinching lead wires. • There is no dust or deformation on battery terminals. 3.2.2. Operation • Check whether the tool operates properly in both the forward and reveres directions. •...

  • Page 7: Disassembly And Assembly Instructions

    4 Disassembly and Assembly Instructions * To reduce the risk of injury, always remove battery pack before removing/installing the tool. * To assemble the tool, start with 4-9 and proceed to 4-1. 4.1. Removing the Plate Hook. 1. Remove the M4-14 screw. 2.

  • Page 8: Operation Panel

    4.3. Removing the Housing. 1. Remove nine screws. 2. Remove housing B. 3. Remove the F/R selector handle. 4. Remove the operation panel. 5. Remove the square nut. 4.4. Removing the Interior Components. 1. Remove the heat resistant tape and remove the interior components from the housing A.

  • Page 9: Switch Assembly

    4.5. Removing the Switch Assembly, LED Assembly and Battery Terminal. 1. Remove the 2-pin connector. 2. Remove the 6-pin connector. 3. Pull the faston terminal directly out from the switch assembly. * Exercise care not to bend the ter- minal fitting. 4.

  • Page 10: Driving Shaft

    4.7. Removing the Gear Case Assembly. 1. Rotate the motor mounting plate to the left and remove it from the gear case. 2. Remove the thrust plate, planet gear B, ring gear B, carrier B, planet gear A, carrier A, and the ring gear A (in that order).
  • Page 11 4.8. Assembly of the Gear Case Assembly and the Clutch Handle. Align the gear case assembly's adjusting screw as shown in the figure. Position so that the [1] mark on the clutch handle is Aligned with the center of click spring A. 4.9.
  • Page 12 4.10. Wiring and Assembly Points.

  • Page 13: Wiring Connection Diagram

    5 Wiring Connection Diagram 6 Schematic Diagram...

  • Page 14: Exploded View And Replacement Parts List

    Model No. : EY74A2 Exploded View...
  • Page 15 Model No. : EY74A2 Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks WEY6450L6806 CHUCK FASTENING SCREW WEY74A2K7917 CHUCK WEY7441K9038 TAPPING SCREW (K3-20) WEY74A2K3079 HOUSING AB SET (For EUROPE) WEY74A2K3070 HOUSING AB SET (For OCEANIA) WEY75A7H3247...

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