• Code: 55
• Description: Unsupported Option in Slot <x>
• Remedy: 1. Turn the printer off. 2. Unplug the power cord from the wall outlet. 3. Remove the unsupported option. 4. Connect the power cord to a properly grounded outlet. 5. Turn the printer on. If this does not fix the problem, replace the system board

• Code: 56
• Description: Standard Parallel Port Disabled
• Remedy: • Select Continue to clear the message. The printer discards any data received through the parallel port. • Make sure the Parallel Buffer menu item is not set to Disabled. • If this does not fix the problem, replace the PCI card.

• Code: 56
• Description: Parallel Port <x> Disabled
• Remedy: • Select Continue to clear the message. The printer discards any data received through the parallel port. • Make sure the Parallel Buffer menu item is not set to Disabled. • If this does not fix the problem, replace the PCI card.

• Code: 56
• Description: Serial Port <x> Disabled
• Remedy: • Select Continue to clear the message. The printer discards any data received through the serial port. • Make sure the Serial Buffer menu item is not set to Disabled. • If this does not fix the problem, replace the PCI card.

• Code: 56
• Description: Standard USB Port Disabled
• Remedy: • Select Continue to clear the message. The printer discards any data received through the USB port. • Make sure the USB Buffer menu item is not set to Disabled. • If this does not fix the problem, replace the system board.

• Code: 57
• Description: Configuration Change Held Jobs May Not Be Restored See Configuration Change, above - not in IR as 57
• Remedy: Configuration changes may be: • Code version changes • Paper handling options removed • The disk was installed from a different model or speed of printer.

• Code: 58
• Description: Too Many Flash Options
• Remedy: Too many flash options are installed. To continue: 1. Turn off and unplug the printer. 2. Remove the excess flash memory. 3. Plug in the printer, and turn it on. If this does not fix the problem, replace the system board.

• Code: 58
• Description: Too Many Trays Attached
• Remedy: 1. Turn off and unplug the printer. 2. Remove options until the supported number of options for that model. Models C734 supports three options and models C736 supports four options. 3. Plug in the printer, and turn it on. If this does not fix the problem, replace the system board.