• Code: C7-1311
• Display: Waste toner container is not installed. Install it.
• 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: C8-2210, C8-2310
• Display: Yellow Developer Failure: #C8-2210. Turn off then on Yellow Developer Failure: #C8-2310. Install yellow developer unit again
• 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: C8-3210, C8-3310
• Display: Magenta Developer Failure: #C8-3210. Turn off then on Magenta Developer Failure: #C8-3310. Install magenta developer unit again.
• 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: C8-4210, C8-4310
• Display: Cyan Developer Failure: #C8-4210. Turn off then on Cyan Developer Failure: #C8-4310. Install cyan developer unit again
• Description: The cyan 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 cyan developer unit. 7) If the problem persists, replace the cyan developer unit.

• Code: C8-5210, C8-5310
• Display: Black Developer Failure: #C8-5210. Turn off then on Black Developer Failure: #C8-5310. Install black developer unit again
• Description: The black 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 black developer unit. 7) If the problem persists, replace the black developer unit.

• Code: C9-2110, C9-2120
• Display: Replace with new Transfer rollerpen it.
• Description: The life of the second transfer roller(T2) expires soon or has expired.
• Remedy: 1) Open the side cover. 2) Replace the second transfer roller(JC95-01514A) with a new one. 3) Close the side cover. 4) Enter SVC mode. • To enter the service mode, press 1,2,3 number keys simultaneously. When the password dialog box appears, enter “1934” and press the “OK” button. 5) Select “TRANSFER” (INFORMATION > Supply Status > Field Replacement Unit > TRANSFER) 6) Select “T2 Roller”. The “RESET” button will be activated. Click “RESET” to clear the T2 Roller count. 7) Exit the SVC mode by pushing the home button.

• Code: C9-2220, C9-2120
• Display: TR Failure: #C9-2220. Install transfer roller again
• Description: The life of the second transfer roller(T2) is not installed.
• Remedy: 1) Open the side cover. 2) Remove and reinstall the second transfer roller. 3) Close the side cover. 4) If the problem persists, replace the HVPS board(JC44-00212A).

• Code: H1-1311, H1-1312, H1-1313, H1-1314, H1-1315, H1-1317, H1-1318
• Display: Paper jam in Tray 3.
• Description: Paper jam has occurred in tray3. (Pick up unit connection is defective. / Pickup rollers are defective. / Feed sensor is defective.)
• Remedy: 1) Open the DCF Take Away-Cover. Remove the jammed paper. 2) Remove tray3. Remove the jammed paper. Close the DCF Take Away-Cover and insert tray3. 3) If this jam error occurs frequently, check the rollers below. a) Remove the tray3 and tray4. b) Check if the pick up/ reverse/ forward rollers are assembled correctly. c) If the pick up/ reverse/ forward rollers are worn out or contaminated, replace the defective roller(JC93-00540A). 4) If pick up/ reverse/ forward rollers have no problem, check the following. a) Remove the DCF pick up unit1. Check if the feed sensor cable is connected correctly. b) Check if the sensor cable on DCF board is connected correctly. c) If the connection is OK, replace the feed sensor(0604-001381). d) Install the DCF pick up unit1. 5) If the problem persists after checking step 3~4, check the following : a) Remove the DCF pick up unit1. Check if the sensor and actuator are assembled correctly. b) When pushing the pickup lever, check if the pick up rollers are down. c) Replace the DCF pick up unit1(JC93-00513A) or defective part. 6) Check the DCF feed motor. a) Check if the DCF feed motor cable is connected correctly. b) If the connection is OK, replace the DCF feed drive unit(JC93-00447A). (Refer to 3.3.33.2 DCF Feed Motor) 7) Check the DCF pick up motor. a) Check if the DCF pick up motor cable is connected correctly. b) If the connection is OK, replace the DCF pick up drive unit(JC93-00442A). c) If the connection is OK, replace the feed sensor(0604-001381). d) Install the DCF pick up unit1. 5) If the problem persists after checking step 3~4, check the following : a) Remove the DCF pick up unit1. Check if the sensor and actuator are assembled correctly. b) When pushing the pickup lever, check if the pick up rollers are down. c) Replace the DCF pick up unit1(JC93-00513A) or defective part. 6) Check the DCF feed motor. a) Check if the DCF feed motor cable is connected correctly. b) If the connection is OK, replace the DCF feed drive unit(JC93-00447A). 7) Check the DCF pick up motor. a) Check if the DCF pick up motor cable is connected correctly. b) If the connection is OK, replace the DCF pick up drive unit(JC93-00442A).