Code :

Code: 940
Description: High-Capacity Feed Sensor Error
Remedy: 1 • Paper size sensors 1 and 2 • Residual paper sensors 1—4 • Paper level sensor • Lower limit switch • Docking switch • Upper limit • Paper sensor switch • Paper feed sensor Go to “Sensor/Sw Test”, and perform the LED sensor test. You can block each sensor to verify if it is working properly. Replace the failing sensor. 2 • Tray motor • Paper feed motor • HCPF power supply • Pickup solenoid • Paper feed roller • Transfer roller • Paper feed clutch • Tray drive belt Be sure that all rollers, gears, and belts are in good working order. Replace as necessary. 3 • Paper feed clutch • Pickup solenoid • HCF power supply • Paper feed motor • Tray motor • HCPF board Go to “Maintenance Mode”, and run the tests.

Code: 941
Description: High-Capacity Feed Tray Error
Remedy: 1 • Paper size sensors 1 and 2 • Residual paper sensors 1—4 • Paper level sensor • Lower limit switch • Docking switch • Upper limit • Paper sensor switch • Paper feed sensor Go to “Sensor/Sw Test”, and perform the LED sensor test. You can block each sensor to verify if it is working properly. Replace the failing sensor. 2 • Tray motor • Paper feed motor • HCPF power supply • Pickup solenoid • Paper feed roller • Transfer roller • Paper feed clutch • Tray drive belt Be sure that all rollers, gears, and belts are in good working order. Replace as necessary. 3 • Paper feed clutch • Pickup solenoid • HCF power supply • Paper feed motor • Tray motor • HCPF board Go to “Maintenance Mode”, and run the tests.

Code: 942
Description: Duplex Error
Remedy: 1 Is connector CN16 on the printer controller board connected properly? Replace the printer controller board. Plug the connector in securely.

Code: 946
Description: Printer/Printhead Controller Board Communication Error
Remedy: 1 Is CN03 on the printhead controller board or CN14 on the printer controller board connected properly? Go to step 2. Connect cables. 2 Make sure all printhead LED EPROMS are present on the printhead controller board. Are all the EPROMS present? Go to step 3. Install the EPROM(s) included with printhead FRU. 3 Replace the printhead controller board. Did this fix the problem? Problem solved. Replace the printer controller board.

Code: 947
Description: Finisher Communication Error
Remedy: 1 Are the finisher to printer interface cable and power cable properly connected? Go to step 2. Properly connect the cable. 2 Replace the interface cable. Did this resolve the problem? Problem solved. Replace the control finisher board. Go to step 3. 3 Did finisher control board replacement resolve the problem? Problem solved. Replace the printer control board.

Code: 948
Description: Machine ID Error
Remedy: 1 Turn the printer off, and wait 30 seconds. Turn the printer on. Did this fix the problem? Problem solved. Verify proper installation of the EPROMs on both the printer controller board and the printhead controller board. Go to step 2. 2 Are the EPROMs installed correctly? Replace the printer controller board. Go to step 3. Install the EPROMs correctly. 3 Did replacing the printer controller board fix the problem? Problem solved. Replace the printhead controller board.

Code: 949
Description: Tray (x) Comm
Remedy: 1 Replace the printer controller board. Does this fix the problem? Problem solved. Replace the expansion feeder control board for trays 2—5. If the problem is with the highcapacity paper feeder, replace the HCPF board.