AcuLaser C1100, CX11N & CX21N: How to manually remove and reinstall the toner cartridges


  • You have been advised to manually remove and/or reinstall toner cartridges
  • The printer may display error message "Service Req E527"
  • One or more toner cartridges appear to be installed incorrectly
  • These models: the AcuLaser C1100, CX11N, CX21N and all variants


This article explains how to manually align, remove and reinstall the toner cartridges. This procedure is used to resolve specific print quality and cartridge installation issues.


The images in this article generally depict the AcuLaser C1100, but the procedures are the same for the AcuLaser CX11N, CX21N and all variants.


We recommend using genuine Epson toner cartridges. Using non-genuine consumable products may affect the operation of your printer. Epson are not liable for any damages or problems arising from the use of consumable products not manufactured or approved by Epson.


  1. Close all the covers, and power the printer off.

  2. Open Cover B, and then remove the photoconductor unit (PCU).

  3. Turn the toner carousel by hand to line up a toner cartridge with the front of the printer.

  4. Remove the toner cartridge, and then close Cover A.

  5. Reinstall the photoconductor unit (PCU).

  6. Close all the covers, and then power the printer on.

  7. Reinstall the toner cartridge(s) following the prompts on the LCD panel.

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