Step 1  Check if the firmware is updated, and then update the firmware if necessary. Make sure that the printer supports the option. See the Printer, Option, and Stand Compatibility Guide. Make sure that the option is properly attached to the printer or adjacent option. 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: Reinstall the option. 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. |