• Code: C7-1310
• Display: Install waste toner container.
• Description: The waste toner container is not installed.
• Remedy: 1) Open the front cover. 2) Remove and reinstall the waste toner container. 3) Close the front cover.

• Code: C8-2110, C8-2125
• Display: Prepare new yellow developer unit Replace with new yellow developer unit. Call for service
• Description: The life of the yellow developer unit expires soon or has expired.
• Remedy: 1) If its life is at the end, turn the machine off and replace the developer unit with new one.

• Code: C8-2210, C8-2310, C8-2313
• Display: Yellow Developer Failure: #C8-2210. Turn off then on Yellow Developer Failure: #C8-2310. Install yellow developer unit again Yellow Developer Failure: #C8-2313. Turn off then on. Please call for service if the problem persists
• Description: The yellow developer unit has a problem with toner supply or sensor calibration.
• Remedy: 1) Open the front cover. 2) Remove the waste toner container. 3) Check if the toner supply pipe is blocked. If it is closed, open it. 4) Install the waste toner container. Close the front cover. 5) Turn the machine off then on. 6) If the problem persists, remove and reinstall the yellow developer unit. 7) If the problem persists, replace the yellow developer unit.

• Code: C8-2410
• Display: Yellow developer unit is not installed. Install it
• Description: The yellow developer unit is not installed.
• Remedy: 1) Open the front cover. 2) Check if all developer unit is installed. Remove and re-install the developer unit.

• Code: C8-3110, C8-3125
• Display: Prepare new magenta developer unit Replace with new magenta developer unit. Call for service
• Description: The life of the magenta developer unit expires soon or has expired.
• Remedy: 1) If its life is at the end, turn the machine off and replace the developer unit with new one.

• Code: C8-3210, C8-3310, C8-3313
• Display: Magenta Developer Failure: #C8-3210. Turn off then on Magenta Developer Failure: #C8-3310. Install magenta developer unit again Magenta Developer Failure: #C8-3313. Turn off then on. Please call for service if the problem persists
• Description: The magenta developer unit has a problem with toner supply or sensor calibration.
• Remedy: 1) Open the front cover. 2) Remove the waste toner container. 3) Check if the toner supply pipe is blocked. If it is closed, open it. 4) Install the waste toner container. Close the front cover. 5) Turn the machine off then on. 6) If the problem persists, remove and reinstall the magenta developer unit. 7) If the problem persists, replace the magenta developer unit.

• Code: C8-3410
• Display: Magenta developer unit is not installed. Install it
• Description: The magenta developer unit is not installed.
• Remedy: 1) Open the front cover. 2) Check if all developer unit is installed. Remove and re-install the developer unit.

• Code: C8-4110, C8-4125
• Display: Prepare new cyan developer unit Replace with new cyan developer unit. Call for service
• Description: The life of the cyan developer unit expires soon or has expired.
• Remedy: 1) If its life is at the end, turn the machine off and replace the developer unit with new one.