Code :

Code: C0D50
Description: Duplex Horizontal Transport Motor malfunction
Remedy: 1 Horizontal Transport Motor turns when the Start key is pressed. NO Correct drive coupling. 2 Horizontal Transport Motor rotation: the voltage across PJ12A-5 on Control Board and GND is DC5V (motor deenergized) and DC0V (motor energized) when the Start key is pressed. NO Change Control Board. 3 Horizontal Transport Motor rotation: the voltage across PJ12A-7 on Control Board and GND is DC5V (motor deenergized) and DC0V (motor energized) when the Start key is pressed. YES Change Control Board. NO Change motor.

Code: C0E00
Description: Main Erase Lamp’s failure to turn ON
• The Main Erase Lamp Malfunction signal remains LOW for a continuous 1-sec. period while the Main Erase Lamp remains OFF. • The Main Erase Lamp Malfunction signal remains HIGH for a continuous 1-sec. period while the Main Erase Lamp remains ON.
Remedy: 1 Main Erase Lamp ON: the voltage across PJ9A-7A on Master Board and GND is DC24V (lamp OFF) and DC0V (lamp ON) when the Start key is pressed. YES Change Master Board. 2 Main Erase Lamp ON: the voltage across PJ9A-7A on Master Board and GND is DC24V in the standby state. YES Change lamp. NO Change Master Board.

Code: C0F24
Description: AIDC Sensor contamination correction failure
The output voltage from the AIDC Sensor Board does not fall within the range of 0.9V to 1.1V even after the contamination correction and variation adjustment have been made.
Remedy: 1 PJ7A, CN10, and CN41 are plugged securely into Master Board. NO Plug them in securely. 2 Photosensor/LED of the AIDC Sensor are contaminated. YES Clean. NO Change AIDC Sensor Board. Change Master Board.

Code: C0F32
Description: ATDC Sensor malfunction
• The output voltage from the ATDC Sensor remains 0.2V or less, or 4.5V or more, for a continuous 3sec. period after the Developing Unit Drive Motor has been energized. • The output voltage from the ATDC Sensor does not fall within the range of 2.45V to 2.55V during an F8 operation.
Remedy: 1 PJ7A on Master Board, CN10, and PJ7 on the sensor are properly connected. NO Plug them in securely. 2 ATDC Sensor operation: the voltage across PJ7A-10B on Master Board and GND changes in the range between DC0.5V and DC4.5V during a copy cycle. YES Change Master Board. NO Change sensor.

Code: C0F33
Description: Abnormally low T/C as detected by ATDC Sensor
A T/C of 2.5% or less (ATDC Sensor output being 2.86V or more) is detected.
Remedy: 1 PJ7A on Master Board, CN10, and PJ7 on the sensor are properly connected. NO Plug them in securely. 2 ATDC Sensor operation: the voltage across PJ7A-10B on Master Board and GND changes in the range between DC0.5V and DC4.5V during a copy cycle. YES Change Master Board. NO Change sensor.

Code: C12CX
Description: Hard Disk Drive failure
Remedy: 1. Run Hard Disk Format selected in the following sequence: Tech. Rep. Mode - Function - Image Memory. 2. If the same malfunction persists, change Hard Disk Drive. 3. If the malfunction is detected a third time, change Memory Board.

Code: C1300
Description: Polygon Motor malfunction
• No Lock signals are detected for the period of 5 to 20 sec. after the motor has started turning after the Power Switch was turned ON. • No Lock signals are detected for the period of 5 to 20 sec. after the motor has started turning at full speed after the Start key was pressed. • The Lock signal remains HIGH for a continuous period of 3 sec. or more while the motor is running at steady speed.
Remedy: 1. Reset the malfunction and turn OFF and ON the Power Switch. 2. If the same malfunction persists, check connectors of Polygon Motor and Master Board. 3. If connections are okay, change PH Unit, Master Board, or Power Supply Board.