• Code: 46
• Description: 10-354 ERROR 46 FUSER STS (REAR) WARM TIME FAILURE
• Remedy: Measure the resistance between the Fuser Assembly connector P600-1 and P600-3. Does the resistance measure approximately 6 ohms for a 110 VAC Fuser or approximately 20 ohms for a 220 VAC Fuser? Y↓N→ Replace the Fuser Assembly. Measure the resistance between the Fuser Assembly connector P600-7 and P600-9. Does the resistance measure between 20 ohms and 100 ohms? Y↓N→ Replace the Fuser Assembly. Reinstall Fuser. Remove the Rear Cover, Rear Shield and the Rear Shield Bracket. Measure the resistance between P404A-3 and P404A-4 on the Engine Control Board. Does the resistance measure between 20K ohms and 100K ohms? Y↓N→ Repair or replace the wiring harness between the Engine Control Board and the Fuser. Reinstall the Fuser. Switch printer power ON. Does the Fuser get warm? Y↓N→ Replace the Chassis AC Power Assembly. Replace the Engine Control Board.

• Code: 47
• Description: 10-356 ERROR 47 FUSER SSR2 ON TIME FAILURE
• Remedy: Measure the resistance between the Fuser Assembly connector P600-1 and P600-3. Does the resistance measure approximately 6 ohms for a 110 VAC Fuser or approximately 20 ohms for a 220 VAC Fuser? Y↓N→ Replace the Fuser Assembly. Measure the resistance between the Fuser Assembly connector P600-7 and P600-9. Does the resistance measure between 20K and 100K ohms? Y↓N→ Replace the Fuser Assembly. Reinstall Fuser. Remove the Rear Cover, Rear Shield and the Rear Shield Bracket. Measure the resistance between P404A-3 and P404A-4 on the Engine Control Board. Does the resistance measure between 20K and 100K ohms? Y↓N→ Repair or replace the wiring harness between the Engine Control Board and the Fuser. Reinstall the Fuser. Switch printer power ON. Does the Fuser get warm? Y↓N→ Replace the Chassis AC Power Assembly. Replace the Engine Control Board.

• Code: 54
• Description: 10-398 ERROR 54 FAN FAILURE
• Remedy: Enter Service Diagnostics Mode. Run the “Fuser Fan” test. Does the Fuser Fan operate? Y↓N→ Remove the Rear Cover, Rear Shield and the Rear Shield Bracket. Measure the voltage between P530-1 on the Engine Control Board and frame ground. Does the voltage measure +24 VDC? Y↓N→ Replace the Engine Control Interface Board. Measure the voltage between P530-4 on the Engine Control Board and frame ground. Does the voltage measure 0 VDC? Y↓N→ Replace the Engine Control Interface Board. Measure the voltage between P530-3 on the Engine Control Board and frame ground. Does the voltage measure +5 VDC? Y↓N→ Replace the Engine Control Board. If the problem persists, repair or replace the harness between Engine Control Board and the Fuser Fan. Replace the Fuser Fan Assembly. Remove the Rear Cover, Rear Shield and the Rear Shield Bracket. Measure the voltage between P530-5 on the Engine Control Board and frame ground. Does the voltage measure +24 VDC? Y↓N→ Replace the Engine Control Interface Board. Measure the voltage between P530-8 on the Engine Control Board and frame ground. Does the voltage measure 0 VDC? Y↓N→ Replace the Engine Control Interface Board. Measure the voltage between P530-7 on the Engine Control Board and frame ground. Does the voltage measure +5 VDC? Y↓N→ Replace the Engine Control Board. If the problem persists, repair or replace the harness between Engine Control Board and the +24 VDC LVPS Fan. Replace the +24 VDC LVPS Fan.

• Code: 60
• Description: 04-640 ERROR 60 DRUM MOTOR FAILURE
• Remedy: Enter Service Diagnostics Mode and run the “Print Cartridge Motor” test. Does the motor run? Y↓N→ Remove the Rear Cover, the Rear Cover Shield and the Rear Shield Bracket. Connect the power cord and enter Service Diagnostics Mode. Measure the voltage at the Print Engine Controller Interface Board P407-4(+)and frame ground. Is the voltage +5 VDC? Y↓N→ Replace the Engine Control Board. Measure the voltage at the Print Engine Controller Interface Board P407-6(+) and frame ground. Does the voltage measure +24 VDC? Y↓N→ Replace the Engine Control Board. Measure the voltage at the Print Engine Controller Interface Board P407-1(+) and frame ground. Is the voltage +5 VDC? Y↓N→ Replace the Engine Control Board. Run the “Print Cartridge Motor” test. Does the voltage still measure +5 VDC at P407-1? Y↓N→ Replace the Print Cartridge Drive Assembly. Replace the Engine Control Board. Replace the Engine Control Board.

• Code: 70 ... 73
• Description: 09-360 09-361 09-362 09-363 ERROR 70 PRINT CARTRIDGE 1 COMMUNICATIONS FAILURE ERROR 70 PRINT CARTRIDGE 2 COMMUNICATIONS FAILURE ERROR 70 PRINT CARTRIDGE 3 COMMUNICATIONS FAILURE ERROR 70 PRINT CARTRIDGE 4 COMMUNICATIONS FAILURE
• Remedy: Swap the suspect print cartridge with any other cartridge. Close all doors. Does the problem follow the suspect print cartridge? Y↓N→ Remove the cartridge in problem location and carefully inspect the connector damage. Is the connector damaged? Y↓N→ Measure the voltage between pin 4 of the suspect print cartridge connector and frame ground. Does the voltage measure +3.3 VDC? Y↓N→ Measure the voltage between each of P405A-4, -8, P405B-4, -8 and frame ground. Are all voltages +3.3 VDC? Y↓N→ Replace the Engine Control Board. Replace the harness between the Engine Control Board and the suspect print cartridge connector. Replace the Engine Control Board. Replace the Print Cartridge Plate Assembly. Replace the Print Cartridge.

• Code: 78
• Description: 09-358 ERROR 78 WASTE TONER CARTRIDGE FULL DETECTION SENSOR FAILURE
• Remedy: Remove the Waste Cartridge Sensor Holder without disconnecting the harnesses. Measure the voltage between the yellow wire to the Waste Cartridge Full Sensor and frame ground and alternately interrupt the Waste Cartridge Full Sensor. Does the voltage toggle between +5 VDC and 0 VDC? Y↓N→ Measure the voltage between the gray wire to the Waste Cartridge Full Sensor and frame ground. Does the voltage measure +5 VDC? Y↓N→ Remove the Rear Cover and Rear Shield. Measure the voltage at P406A-3 on the Engine Control Board. Does the voltage measure +5 VDC? Y↓N→ Replace the Engine Control Board. Inspect the wiring harness between the Engine Board and the Waste Cartridge Full Sensor. Repair or replace the harness as necessary. Measure the voltage between the violet wire to the Waste Cartridge Full Sensor and frame ground. Does the voltage measure 0 VDC? Y↓N→ Inspect the wiring harness between the Engine Board and the Waste Cartridge Full Sensor. Repair or replace the harness as necessary. Replace the Waste Cartridge Full Sensor. Remove the Rear Cover and Rear Shield. Measure the voltage at P406A-2 (Voltage Measurements) on the Engine Control Board. Alternately interrupt the Waste Cartridge Full Sensor again. Does the voltage toggle between +5 VDC and 0 VDC? Y↓N→ Inspect the wiring harness between the Engine Board and the Waste Cartridge Full Sensor. Repair or replace the harness as necessary. Replace the Engine Control Board.

• Code: 80
• Description: 04-341 04-343 ERROR 80 ENGINE LOGIC BOARD FAILURE
• Remedy: Switch printer power Off, then On. If the problem persists, replace the Engine Control Board.

• Code: 81
• Description: 04-358 ERROR 81 CONTROLLER TO ENGINE COMMUNICATIONS FAILURE
• Remedy: Switch printer power Off. Remove the Image Processor Board, Image Processor Board Cover and the Image Processor Metal Cover and inspect the orange colored ribbon cable between the Relay Board and the Engine Control Board for proper connector seating. If the problem persists, replace the Image Processor Board. If the problem continues to persist, replace the Electrical Chassis Assembly. If the problem continues, replace the Engine Control Board.