• Code: 980
• Description: <device> Comm
• Remedy: The engine is experiencing unreliable communications to the specified device.

• Code: 981
• Description: <device>
• Remedy: The engine protocol violation detected by the specified device.

• Code: 982
• Description: <device> Comm
• Remedy: Communications error detected by the specified device.

• Code: 983
• Description: <device>
• Remedy: Invalid command received by the specified device.

• Code: 984
• Description: <device>
• Remedy: Invalid command parameter received by the specified device. Note: Service errors 980 thru 984 <device> can be one of the following: system board, duplex, tray x (1, 2, 3, 4, or 5), envelope feeder or output bin.

• Code: 990
• Description: <device>
• Remedy: Indicates an equipment check condition has occurred in the specified device, but the device is unable to identify the exact component failure. Note: <device> can be one of the following: duplex, tray x (1, 2, 3, 4, or 5), envelope feeder or output bin.

• Code: 991
• Description: <device> Card
• Remedy: The specified device has detected an equipment check in its system card. Note: <device> can be one of the following: duplex, tray x (1, 2, 3, 4, or 5), envelope feeder or output bin.