• Code: 54.17
• Display: 54.17 Error
  54.1700
• Description: The product has experienced a cyan toner level sensor error.
• Remedy: If the error persists, verify that the cables between the DC controller, print-cartridge tray, and color misregistration sensor are firmly connected. If the error persists, replace the color misregistration sensor. If the error persists, replace the DC controller.

• Code: 54.18
• Display: 54.18 Error
  54.1800
• Description: The product has experienced a 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, verify that the cables between the DC controller, print-cartridge tray, and color misregistration sensor are firmly connected. If the error persists, replace the color misregistration sensor. If the error persists, replace the DC controller.

• Code: 54.19
• Display: 54.19 Error
  54.1900
• Description: The product has experienced a top-of-page 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, verify that the DC controller connectors are firmly connected. If the error persists, replace the DC controller.

• Code: 55.X
• Display: 55.X Error
• Description: The product has experienced a communication timeout error.
  The value for X indicates the following issues. • X=0: DC controller communication error • X=0601: DC controller NVRAM data error • X=0602: DC controller NVRAM access error • X=1: DC controller memory 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, verify that the DC controller connectors are firmly connected. If the error persists, upgrade the firmware. If the error persists, replace the DC controller.

• Code: 56.01
• Display: 56.01 Error
  56.0100
• Description: The product has experienced an input tray error.
• Remedy: 1. Turn off the power by using the power switch, and then wait at least 30 seconds. 2. Reinstall Tray 2 and, if installed, Tray 3. 3. Turn on the power and wait for the product to initialize. If the error persists, verify that the connections between the product and the tray sensor are firmly connected. If the error persists, verify that the tray flag moves correctly. If the error persists, replace the DC controller.

• Code: 57.XX
• Display: 57.XX Error
• Description: The product has experienced a problem with an internal fan.
  The value for XX indicates the following issues. • XX=01: Fan 1 (engine fan) error • XX=02: Fan 2 (duplex fan) 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, verify that the fan rotates freely. If the error persists, replace the fan. If the error persists, replace the DC controller. If the error persists, replace the low-voltage power supply.

• Code: 59.3
• Display: 59.3 Error
  59.3000
• Description: The product has experienced a fuser motor startup 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, verify that the DC controller connectors are firmly connected. If the error persists, replace the fuser motor. If the error persists, replace the fuser. If the error persists, replace the sub-controller board. If the error persists, replace the DC controller. If the error persists, replace the low-voltage power assembly.

• Code: 59.4
• Display: 59.4 Error
  59.4000
• Description: The product has experienced a fuser motor 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, verify that the DC controller connectors are firmly connected. If the error persists, replace the fuser motor. If the error persists, replace the fuser. If the error persists, replace the sub-controller board. If the error persists, replace the DC controller. If the error persists, replace the product.