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

• 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 x (1,2 or 3).