• Code: E061-0001
• Description: Primary charging bias (Bk) lower limit error. At initial rotation, the drum surface potential Vd at potential control is less than 30 V. • Primary charging bias (Bk) is not properly applied. • The drum does not rotate correctly.
• Remedy: 1. Check whether the primary charging assembly is properly installed or connected. (Connection of the connector, Shorting, Wire caught by parts) 2. Check whether the primary charging high-voltage PCB (Bk) is properly installed or connected. (Connection of the connector, Shorting, Wire caught by parts) 3. Check whether the drum motor (Bk) is properly installed or connected. (Connection of the connector, Shorting, Wire caught by parts) 4. Replace the parts. • Primary charging assembly • Primary charging high-voltage PCB (Bk) • Drum/ITB drive motor • DC controller interface PCB • DC controller PCB

• Code: E061-0002
• Description: Potential sensor offset adjustment error. When the result of potential sensor offset adjustment is more than +/-30 V.
• Remedy: 1. Check whether the potential sensor offset adjustment tool is properly installed. 2. Replace the potential sensor.

• Code: E061-0003
• Description: Potential control Vd failure. At the time of measurement of Vd at potential control, the value is more than +50 V or less than -200 V against Vgrid. • Drum cleaning pre-exposure is not performed correctly. • Primary charging is not performed correctly. • The drum is reaching the end of life
• Remedy: 1. Check the connection of the drum cleaning preexposure LED. 2. Check the connection of the primary charging assembly. • Check whether the grid plate is properly installed. • Check whether the shield plate is not soiled by toner. -> Clean the shield plate. • Check whether disconnection of the connector or shorting does not occur or the wire is not caught by parts. 3. Replace the parts. • Drum cleaning pre-exposure LED • Primary charging assembly • Drum (Checking can be performed by COPIER> DISPLAY>DPOT>D-CONT-K. Estimated life is 150,000 or less.)

• Code: E061-0004
• Description: Laser power shortage error. At the time of measurement of 8 bright section potential VI at potential control, the grid bias Vgrid is more than 100 V at least at one point. • Dirt is applied to the dust prevention glass. • Laser is not applied correctly.
• Remedy: 1. Clean the dust prevention glass. 2. Check the connection of the laser scanner unit. (Connection of the connector, Shorting, Wire caught by parts) 3. Replace the parts. • Laser scanner unit (Bk) • Laser interface PCB

• Code: E064-1000
• Description: No output of reference signal for primary charging DC bias (Y/M/C). No output of reference signal for primary charging DC bias (Y/M/C).
• Remedy: Replace the Primary Charging High Voltage PCB (Y/M/C).

• Code: E064-1001
• Description: No output of reference signal for developing DC bias (Y/ M/C/Bk). No output of reference signal for developing DC bias (Y/ M/C/Bk).
• Remedy: Replace the Developing High Voltage PCB (Y/M/C, Bk).

• Code: E064-1101
• Description: Primary charging DC bias (Y) output error. The primary charging DC bias (Y) output showed an abnormal value
• Remedy: Replace the Primary Charging High Voltage PCB (Y/M/C).

• Code: E064-1103
• Description: Developing DC bias (Y) output error. The developing DC bias (Y) output showed an abnormal value
• Remedy: Replace the Developing High Voltage PCB (Y/M/C).