Replace Power supply for Epson WF-4830, 4820 Series

— All about Repair Epson WF-4830/4820 Series procedures, click here

Remove Epson WF-4830, 4820 Series Rear ASF Assy

  • STEP 1. Remove the Housing Right.
  • STEP 2. Remove the Housing Left.
  • STEP 3. Remove the Housing Upper, click here
  • STEP 4. Remove the ADF/SCN Unit, click here
  • STEP 5. Remove the screw that secures the AC inlet, and remove the AC inlet

Epson-WF-4830-4820-series-remove-rear-ASF-assy-step-5.jpg

  • STEP 6. Disconnect the following FFCs/cables from the connectors on the Main Board.
    •  WF-4830 series
      •  PS Unit Cable (CN74)
      •  PE3 Sensor Cable (CN51)
      •  1st Cassette Sensor (CN54)

Epson-WF-4830-4820-series-remove-rear-ASF-assy-step-6-figure-1.jpg

    • WF-4820 series
      •  PS Unit Cable (CN704)
      •  PE3 Sensor Cable (CN105)

Epson-WF-4830-4820-series-remove-rear-ASF-assy-step-6-figure-2.jpg

Step 7 and Step 8 are for WF-4830 series only. For WF-4820 series, go to Step 9 (p.127).

  • STEP 7. Release the 1st Cassette Sensor Cable from the ferrite core.
  • STEP 8. Release the 1st Cassette Sensor Cable and the CR Motor Cable from the grooves and hook on the Guide Rear ASF Upper Assy.

Epson-WF-4830-4820-series-remove-rear-ASF-assy-step-8.jpg

  • STEP 9. Remove the two screws, and remove the Ground Plate PS.
    Epson-WF-4830-4820-series-remove-rear-ASF-assy-step-9.jpg

In some regions, the Ground Plate PS is secured with three screws. (only for EAI)

Epson-WF-4830-4820-series-remove-rear-ASF-assy--check-on-step-9.jpg

Caution: Be careful not to damage the FFCs/cables of the ADF/SCN Unit when removing the Guide Rear ASF Upper Assy.

  • STEP 10. Remove the four screws, and remove the Guide Rear ASF Upper Assy and the AC inlet together.

Epson-WF-4830-4820-series-remove-rear-ASF-assy-step-10.jpg

Install the AC inlet before installing the Guide Rear ASF Upper Assy.

— Fix Epson WF 4830, 4820 series error code 000020, 000025, 000032,… click here

— Fix Epson WF-4830/4820 error code 100016, 100020, 100054, 100077… click here

Replace Epson WF-4830, 4820 Series Power Supply Assy

  • STEP 1. Remove the Housing Right.
  • STEP 2. Remove the Housing Left.
  • STEP 3. Remove the Housing Upper.
  • STEP 4. Remove the ADF/SCN Unit.
  • STEP 5. Remove the Guide Rear ASF Upper Assy.
  • STEP 6. Remove the screw, and remove the Power Supply Assy from the Guide Rear ASF Upper Assy.

Epson-WF-4830-4820-series-remove-power-supply-assy.jpg

  • STEP 7. Replace the new one and reinstall the Power Supply Assy on Epson WF-4830, 4820 Series

— Epson WF-4830/4820 Series Ink System, click here

Remove Epson WF-4830, 4820 Series Holder Connector Assy

  • STEP 1. Remove the Housing Right.
  • STEP 2. Remove the Housing Left.
  • STEP 3. Remove the Housing Upper.
  • STEP 4. Remove the ADF/SCN Unit.
  • STEP 5. Remove the CR Scale.
  • STEP 6. Remove the PF Scale.
  • STEP 7. Remove the Motherboard (Mainboard) Assy, click here
  • STEP 8. Remove the Guide Rear ASF Upper Assy.
  • STEP 9. Remove the Paper Guide Front Unit, click here
  • STEP 10. Remove the Maintenance Box.
  • STEP 11. Remove the two screws that secure the Holder Duct Waste Ink.

Epson-WF-4830-4820-series-remove-holder-connector-step-11.jpg

  • STEP 12. Disconnect the Waste Ink Tube from the Holder Duct Waste Ink, and remove the Holder Duct Waste Ink.

Epson-WF-4830-4820-series-remove-holder-connector-step-12.jpg

  • STEP 13. Remove the two screws that secure the Holder Connector Assy.
  • STEP 14. Disengage the holes on the Holder Connector Assy from the two dowels of the Frame Base, and remove the Holder Connector Assy.

Epson-WF-4830-4820-series-remove-holder-connector-step-14.jpg

About NGUYEN DANG NAM

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