• Code: 980...984
• Description: 980.xx Engine experiencing unreliable communication with the specified device. Note: <device> can be one of the following: • Tray 2 • Tray 3 • Tray 4 981.xx Engine protocol violation detected by the specified device. Note: <device> can be one of the following: • Tray 2 • Tray 3 • Tray 4 982.xx Communications error detected by the specified device. Note: <device> can be one of the following: • Tray 2 • Tray 3 • Tray 4 983.xx Invalid command received by the specified device. Note: <device> can be one of the following: • Tray 2 • Tray 3 • Tray 4 984.xx Invalid command parameter received by the specified device. Note: <device> can be one of the following: • Tray 2 • Tray 3 • Tray 4
• Remedy: Step 1 a Check if the firmware is updated, and then update the firmware if necessary. b Make sure that the printer supports the option. See the Printer, Option, and Stand Compatibility Guide. c Make sure that the option is properly attached to the printer or adjacent option. d Reset the printer. Does the problem remain? Go to step 2. The problem is solved. Step 2 Reseat the printer interface cable on the printer controller board. Does the problem remain? Go to step 3. The problem is solved. Step 3 Do the following to each option: a Reinstall the option. b Print a test page, and then check if the option is defective. Are all options properly working? Go to step 4. Contact the next level of support Step 4 Reseat the option interface cable. Does the problem remain? Go to step 5. The problem is solved. Step 5 Check the option interface cable for damage. Is the cable free of damage? Go to step 6. Go to step 7. Step 6 Replace the option interface cable. See “550-sheet tray interface cable removal”. Does the problem remain? Go to step 7. The problem is solved. Step 7 Replace the option controller board. See “550-sheet tray controller board assembly removal”. Does the problem remain? Contact the next level of support The problem is solved.

• Code: 990...992
• Description: 990.xx An equipment check condition oc991.xx An equipment check condition occurred in the controller card. 992.xx General software error.curred but unable to determine the exact component failure.
• Remedy: Step 1 a Check if the firmware is updated, and then update the firmware if necessary. b Make sure that the printer supports the option. See the Printer, Option, and Stand Compatibility Guide. c Make sure that the option is properly attached to the printer or adjacent option. d Reset the printer. Does the problem remain? Go to step 2. The problem is solved. Step 2 Reseat the printer interface cable on the printer controller board. Does the problem remain? Go to step 3. The problem is solved. Step 3 Do the following to each option: a Reinstall the option. b Print a test page, and then check if the option is defective. Are all options properly working? Go to step 4. Contact the next level of support Step 4 Reseat the option interface cable. Does the problem remain? Go to step 5. The problem is solved. Step 5 Check the option interface cable for damage. Is the cable free of damage? Go to step 6. Go to step 7. Step 6 Replace the option interface cable. See “550-sheet tray interface cable removal”. Does the problem remain? Go to step 7. The problem is solved. Step 7 Replace the option controller board. See “550-sheet tray controller board assembly removal”. Does the problem remain? Contact the next level of support The problem is solved.