Code :

Code: 4200
Description: Laser scanner unit (Pin photo diode sensor) error
Laser beam detection failed. The pin photo diode sensor [board] (KP-1075) does not deliver a horizontal synchronous signal (PD*).
Causes: No laser beam due to the laser diode defect (PD). Soiled or defective pin photo diode sensor. Defective gate array U7 of engine board. Improper connector insertion. Defective harness between engine board and laser scanner unit.

Code: 5300
Description: Eraser lamp error
The ERADEAD* signal (delivered from the eraser lamp blown-out detection circuit on the engine board) goes low continuously more than 1 second, while eraser lamp is on.
Causes: Blown-out eraser lamp [board KP- 1067]. Defective CPU U1 on the engine board. Improper connector insertion to the eraser lamp [board KP-1067].

Code: 6000
Description: Fuser unit error
HTEMP remains high for longer than 4 seconds since the heater lamp is on. The heater lamp continues to be turn on for longer than 60 seconds
Causes: Blown-out thermistor. Blown-out heater lamp. Defective CPU U1 or comparator U9 on the engine board. Improper connector insertion. Defective power supply unit. Defective harness between fuser unit and power supply unit.

Code: 6020
Description: Abnormal high temperature error
HTEMP* remains high for longer than 4 seconds since the heater lamp is on. The heater lamp continues to be turn on for longer than 60 seconds.
Causes: Defective CPU U1 or comparator U9 on the engine board. Defective engine board (KP-1081). Defective thermistor. Defective photo coupler on the power supply unit for the heater lamp.

Code: 6030
Description: Thermistor error
The thermistor error signal was detected when the heater lamp was turned on.
Causes: Defective thermistor. Defective harness (S02678). Defective power supply unit. Defective engine board (KP-1081). Defective fuser board (KP-1069).

Code: 6400
Description: Zero cross signal error
The ZCROSS signal does not reach the engine board within 3 seconds after power on.
Causes: Defective power supply unit. Defective CPU U1 on the engine board.

Code: 7001
Description: Toner motor error
Toner motor is overloaded. TNMOC is detected by sampling every other 100 ms in 2 seconds since the main and toner motors are activated following the Replace toner Clean printer message after the “Toner low” is detected.
Causes: Overcurrent in the toner motor circuitry due to an excessive torque, caused by hardened toner. Defective gate array U7 on the engine board. Improper connector insertion. Defective harness between developer and high voltage unit. Defective harness between high voltage unit and engine board.

< 1 2 3 4 >