• Code: 01
• Display: TONER CARTRIDGE MISSING
• Description: message appears when it is installed
• Remedy: 1. The developing bias contact of the high-voltage power supply is not making a good connection with the cartridge contact. Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or parts are deformed or damaged, replace them. 2. Defective cartridge Action: Replace the cartridge. 3. The high-voltage power supply PCB is defective. Action: Replace the high-voltage power supply PCB. 4. The DC controller PCB is defective. Action: Replace the DC controller PCB.

• Code: 02
• Display: LOAD <MEDIA> <SIZE> IN MPT
• Description: message appears when the specified sized paper is in the multi-purpose tray
• Remedy: 1. Damaged paper detection lever Action: Replace the defective lever. 2. Defective multi-purpose tray paper sensor Action: Replace the multi-purpose tray PCB. 3. The DC controller PCB is defective. Action: Replace the DC controller PCB.

• Code: 03
• Display: "LOAD<MEDIA><SIZE> IN UPPER or LOAD<MEDIA><SIZE>IN LOWER
• Description: when the specified cassette is loaded with paper.
• Remedy: 1. Pull out the upper and lower cassettes, and install the specified cassette in the printer. If the lifter does not lift, perform step 5 and subsequent steps. 2. Damaged paper detection lever Action: Replace the defective lever. 3. Defective upper cassette paper-out sensor/lower cassette paper-out sensor Action: Replace the pick-up PCB. 4. The DC controller PCB is defective. Action: Replace the DC controller PCB. 5. Pick-up drive unit is damaged. Action: Remove the pick-up unit and replace any damaged parts. 6. The cassette pick-up solenoid is defective. Action: Remove the pick-up unit, and disconnect cassette pick-up solenoid connector J1203 from the pick-up PCB. Measure the resistance between connectors J1203- 1 and J1203-2 on the cable side. If it is not about 160W, replace the cassette pickup solenoid. 7. The pick-up PCB is defective. Action: Replace the pick-up PCB. 8. The DC controller PCB is defective. Action: Replace the DC controller PCB.

• Code: 04
• Display: PAPER JAM
• Description: message appears when the paper jam has not occurred, and the printer cannot be in READY mode.
• Remedy: 1. Registration paper sensor lever does not move smoothly, or is damaged. Action: Adjust the lever so that it moves smoothly. Replace it if damaged. 2. Pick-up unit sensor lever does not move smoothly, or is damaged. Action: Adjust the lever so that it moves smoothly. Replace it if damaged. 3. Fixing unit delivery sensor lever does not move smoothly, or is damaged. Action: Adjust the lever so that it moves smoothly. Replace it if damaged. 4. Face-down tray delivery sensor lever does not move smoothly, or is damaged. Action: Adjust the lever so that it moves smoothly. Replace it if damaged. 5. Sensor failure Action: Using the printer driver tester, check the condition of the sensors. If the LED of the tester does not light up when the sensor lever is shifted, replace the sensor.

• Code: 05
• Display: PRINTER OPEN
• Description: message appears when the cover is closed.
• Remedy: 1. The projection for the delivery cover is damaged. Action: Replace the delivery cover. 2. The projection for the upper cover is damaged. Action: Replace the upper cover. 3. The projection for the pick-up unit door is damaged. Action: Replace the pick-up unit door. 4. The pick-up unit door sensor is defective. Action: Using the printer driver tester, check the condition of the sensor. If the LED of the tester does not light up when the pick-up unit door is opened, replace the sensor. 5. Interlock arm does not move smoothly, or is damaged. Action: Adjust the arm so that it moves smoothly. Replace it if damaged. 6. Connector is loose. Action: Reconnect connector J1401 on the switch/sensor PCB and connectors J205 and J221 on the DC controller PCB. 7. The door switch is defective. Action: Replace the switch/sensor PCB. 8. The DC controller PCB is defective. Action: Replace the DC controller PCB.

• Code: 10.1
• Display: 10.1 ERROR FUSER CALL FOR SERVICE
• Description: Fixing unit failure (abnormal low temperature
• Remedy: 1. The rated voltage of the fixing unit installed in the printer differs from the line voltage. Action: Replace the fixing unit. 2. The thermistor is dirty. Action: If the thermistor contact area of the upper fixing roller is dirty, clean it. 3. The thermistor is not installed correctly. Action: If the thermistor is not evenly contacting the upper fixing roller, re-install the thermistor correctly. 4. The thermistor wire is broken. Action: Turn the power OFF and remove the fixing unit. Measure the resistance between the fixing unit connector J50B-5 (FSRTH) and J50B-4 (GNDTH). If the resistance is not between about 190kom and 290kom (room temperature of 25°C), check the wiring from connector J222 on the DC controller PCB to the thermistor. If it is normal, replace the thermistor. 5. The main heater wire is broken. Action: Remove the fixing unit. If there is no continuity between the fixing unit connector J50-3 (FSRN1: the upper right terminal of the left connector) and J51-5 (FSRN2: the upper right terminal of the right connector), replace the main heater. 6. The sub heater wire is broken. Action: Remove the fixing unit. If there is no continuity between the fixing unit connector J50-4 (FSRL1: the lower right terminal of the left connector) and J51-6 (FSRL2: the lower right terminal of the right connector), replace the sub heater. 7. The thermoswitch is open. Action: Remove the fixing unit and wiring cover. If there is no continuity between thermoswitch terminals, replace the thermoswitch. 8. The fixing unit drive circuit is defective. Action: Replace the power supply unit. 9. The DC controller PCB is defective. Action: Replace the DC controller PCB.

• Code: 10.2
• Display: 10.2 ERROR FUSER CALL FOR SERVICE
• Description: Fixing unit failure (abnormal Warm-up)
• Remedy: 1. The rated voltage of the fixing unit installed in the printer differs from the line voltage. Action: Replace the fixing unit. 2. The thermistor is dirty. Action: If the thermistor contact area of the upper fixing roller is dirty, clean it. 3. The thermistor is not installed correctly. Action: If the thermistor is not evenly contacting the upper fixing roller, re-install the thermistor correctly. 4. The thermistor wire is broken. Action: Turn the power OFF and remove the fixing unit. Measure the resistance between the fixing unit connector J50B-5 (FSRTH) and J50B-4 (GNDTH). If the resistance is not between about 190kom and 290kom (room temperature of 25°C), check the wiring from connector J222 on the DC controller PCB to the thermistor. If it is normal, replace the thermistor. 5. The main heater wire is broken. Action: Remove the fixing unit. If there is no continuity between the fixing unit connector J50-3 (FSRN1: the upper right terminal of the left connector) and J51-5 (FSRN2: the upper right terminal of the right connector), replace the main heater. 6. The sub heater wire is broken. Action: Remove the fixing unit. If there is no continuity between the fixing unit connector J50-4 (FSRL1: the lower right terminal of the left connector) and J51-6 (FSRL2: the lower right terminal of the right connector), replace the sub heater. 7. The thermoswitch is open. Action: Remove the fixing unit and wiring cover. If there is no continuity between thermoswitch terminals, replace the thermoswitch. 8. The fixing unit drive circuit is defective. Action: Replace the power supply unit. 9. The DC controller PCB is defective. Action: Replace the DC controller PCB.

• Code: 10.3
• Display: 10.3 ERROR FUSER CALL FOR SERVICE
• Description: Fixing unit failure (abnormal high temperature)
• Remedy: 1. The thermistor has shorted. Action: Turn the power OFF and remove the fixing unit. Measure the resistance between the fixing unit connector J50B-5 (FSRTH) and J50B-4 (GNDTH). The connector J50B is the upper terminal of the left connector. If the resistance is 1kom or less, check the wiring from connector J222 on the DC controller PCB to the thermistor. If it is normal, replace the thermistor. 2. The fixing unit drive circuit in the power supply is defective. Action: Replace the power supply. 3. The DC controller PCB is defective. Action: Replace the DC controller PCB.