• The compatible cartridge has been installed correctly, but the printer is not registering it as installed or states it is not compatible.
• Remove the affected cartridge or cartridges from the printer.
• Turn the printer off and wait for 2 minutes.
• Turn the printer back on and wait for a further 2 minutes.
• Once the printer warns that certain cartridge or cartridges are missing, reinstall them one at a time.

• If the print quality is poor, remove the toner cartridge from the printer and gently rock the cartridge from side to side.
• This movement helps distribute the toner evenly within the cartridge.
• After rocking the cartridge 5–6 times, re-insert the cartridge into the printer and print a test page.
• If the issue persists, check the life of the maintenance items in your machine in case any of them need to be replaced.

• Remove the toner cartridge from the printer and gently rock the cartridge from side to side.
• This movement helps distribute the toner evenly within the cartridge.
• Carefully clean the drum roller to remove any excess toner.
• Re-insert the cartridge into the printer and print a test page.
• If the problem persists, repeat the previous steps.

• Print 15–20 pages and check to see if the problem persists.

The L0H25A-REM contains the following:

• 1 x Fuser unit
• 1 x Transfer roller
• 1 x 5 piece paper pickup roller with installation tool
• 1 x 5 piece seperation roller with tool

The image below shows which item is which:

• 1. Open the rear cover to locate the fuser unit at the top.
• 2. Press both release tabs on the sides of the fuser unit and pull it out.
• 3. Insert the new fuser and push firmly until you hear a click.
• 4. Close the rear cover.

Do not touch the black surface of the new roller. Oils from your skin will degrade print quality.

• 1. Open the rear cover. The transfer roller at the bottom will automatically drop down into view.
• 2. Unclip the blue latches on both sides of the transfer roller and remove it from the printer.
• 3. Install the new roller by inserting the right side first, followed by the left. Ensure it clicks into place.
• 4. Close the rear cover.

• 1. Open the rear printer cover
• 2. Lift the transfer roller section to access the rollers hidden behind it.
• 3. Slide the blue separation roller to the left until it unlocks, then pull it out and remove it.
• 4. For the pickup roller, pull down the next visible blue tab and slide the roller to the left to remove it.
• 5. Slide the new pickup roller in the same way the old one was taken out, then push the blue release and roller lever up to lock it into place.
• 6. Align the opening in the new separation roller with the white tab on the printer rail, then slide the separation roller to the right to lock it into place.
• 7. Close the rear printer cover.