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.