• Code: 52.0000
• Display: 52.0000
• Description: Engine laser scanner error
• Remedy:

• Code: 54.0100
• Display: 54.0100
• Description: Environmental sensor error
• Remedy: Verify that the DC controller connectors are firmly connected. If the error persists, replace the temperature/humidity sensor. If the error persists, replace the DC controller.

• Code: 54.0600
• Display: 54.0600
• Description: Density sensor error
• Remedy: Verify that the cables between the DC controller is firmly connected.

• Code: 54.1100
• Display: 54.1100
• Description: Black density out of range
• Remedy: If the error persists, replace the color misregistration sensor.

• Code: 54.1200
• Display: 54.1200
• Description: Black density measurement abnormality
• Remedy: If the error persists, replace the DC controller.

• Code: 54.1599
• Display: 54.1599
• Description: Black CPR pattern cannot be read
• Remedy: 1. Turn off the power by using the power switch, and then wait at least 30 seconds.2. Turn on the power and wait for the product to initialize. If the error persists, verify that the cables between the color misregistration sensor and the DC controller are firmly connected. If the error persists, replace the color misregistration sensor. If the error persists, replace the toner cartridge tray. If the error persists, replace the DC controller.

• Code: 54.1800
• Display: 54.1800
• Description: Black toner level sensor error
• Remedy: 1. Turn off the power by using the power switch, and then wait at least 30 seconds.2. Turn on the power and wait for the product to initialize. If the error persists, replace the DC controller.

• Code: 54.2100
• Display: 54.2100
• Description: Beam detect (BD) error
• Remedy: If the error persists, replace the DC controller. If the error persists, replace the product.