Description: Main scan encoder error
The carriage unit does not stop at home position (rear side) or reverse position (front side).
Causes: • Defective main scan drive motor • Main scan encoder coming off • Defective main scan encoder sensor
Code: 503
Description: Tray 2 (optional paper tray unit) feed error
• The lift sensor is not activated within 18 seconds twice consecutively after the tray lift motor starts lifting the bottom plate. • When the tray lowers, the tray lift sensor does not go off within 1.5 sec twice consecutively.
Causes: • Defective or disconnected tray lift motor • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacle • Reverse connection of harness
Code: 504
Description: Tray 3 (optional paper tray unit) feed error
• The lift sensor is not activated within 18 seconds twice consecutively after the tray lift motor starts lifting the bottom plate. • When the tray lowers, the tray lift sensor does not go off within 1.5 sec twice consecutively.
Causes: • Defective or disconnected tray lift motor • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacle • Reverse connection of harness
Code: 506
Description: Paper feed motor lock error (optional paper tray unit) A motor lock signal is not detected for more than 1.5 s or the lock signal is not detected for more than 1.0 s during rotation.
Causes: • Defective paper feed motor • Too much load on the drive mechanism
Code: 520
Description: Sub scan motor error
The sub scan motor does not reply for 100ms when a machine sends the "stop" command to the sub scan motor.
Causes: • Defective sub scan encoder sensor • Timing belt of the sub scan encoder is come off. • Defective sub scan motor
Code: 570
Description: Charge bias leak
High voltage unit sends a signal of charge bias leak.
Causes: • Defective charge roller • Defective high voltage unit
Code: 571
Description: Ink head temperature error
The temperature sensor at the ink head detects unusual temperature for 0.8 seconds.
Causes: • Disconnect harness • Defective temperature sensor at the ink head
Code: 572
Description: Belt temperature error
The temperature sensor at the belt unit detects unusual temperature for 0.8 seconds.
Causes: • Disconnect harness • Defective temperature sensor at the ink head