900 error service check

Step 1

1. Perform a POR.



2. Check if a 900.xx error code appears on the display.

Does a 900.xx error code appear?

Go to step 4.

Go to step 2.

Step 2

Check if another type of error code appears instead of the 900.xx error code.

Does a different error code appear?

Go to step 3.

Go to step 4.

Step 3

See the error code and its service instructions in the printer Service Manual.

Does the problem remain?

Go to step 4.

The problem is solved.

Step 4

1. Turn off the printer.



2. At the rear of the printer, disconnect the network cable, USB cable, and fax line.



3. Turn on the printer.

Does the problem remain?

Go to step 12.

Go to step 5.

Step 5

1. From the control panel, navigate to the Reports menu.



2. Select Device Statistics and Device Settings.

Does the problem remain?

Go to step 12.

Go to step 6.

Step 6

Check if the printer has a scanner.

Does the printer have a scanner?

Go to step 7.

Go to step 8.

Step 7

Using the scanner, perform a one-page copy job in color.

Does the problem remain?

Go to step 12.

Go to step 8.

Step 8

1. Turn off the printer.



2. At the rear of the printer, connect the network cable, USB cable, and fax line.



3. Turn on the printer.

Does the problem remain?

Go to step 9.

Go to step 10.

Step 9

1. Start the printer in Invalid engine mode. See Entering Invalid engine mode.



2. Check if an Invalid Engine Code message appears.

Does an Invalid Engine Code message appear?

Go to step 10.

Contact the next level of support.

Step 10

Using the Device Settings report that is printed in step 5, check if the firmware level is older than the latest available version.

Is the firmware version older, and does the customer agree to update the firmware?

Go to step 11.

Contact the next level of support.

Step 11

Update the firmware to the latest version.

Does the problem remain?

Go to step 12.

The problem is solved.

Step 12

1. Turn off the printer.



2. Reseat all FFC type cables on the controller board, and then make sure that the cables are properly connected.



3. Make sure that all the cables on the controller board and scanner are properly connected.



4. Turn on the printer.



5. From the control panel, navigate to the Reports menu, and then select Device Statistics and Device Settings.



6. For MFPs, perform a one-page copy and scan job in color.

Does the problem remain?

Go to step 13.

The problem is solved.

Step 13

Check if a hard disk is installed.

Is a hard disk installed?

Go to step 14.

Go to step 17.

Step 14

1. Check for buffered print jobs, and then delete them. See Hard disk failure service check.



2. Perform a POR.

Does the problem remain?

Go to step 15.

The problem is solved.

Step 15

1. Turn off the printer.



2. Uninstall the hard disk.



3. Perform a POR.

Does the problem remain?

Go to step 17.

Go to step 16.

Step 16

Replace the hard disk.

Does the problem remain?

Go to step 17.

The problem is solved.

Step 17

• Memory options
• Fax card
• Modem
• Wireless and network option cards

Is any of the components installed?

Go to step 18.

Go to step 21.

Step 18

1. Turn off the printer.



2. Remove all the installed components.



3. Turn on the printer.

Does the problem remain?

Go to step 21.

Go to step 19.

Step 19

1. Turn off the printer.



2. Install the following components one at a time:

   • Memory options
   • Fax card
   • Modem
   • Wireless and network option cards

   Note:  Make sure to perform a POR after installing each component.

Does the problem remain?

Go to step 20.

The problem is solved.

Step 20

1. Turn off the printer.



2. Replace the components that caused the error.



3. Turn on the printer.

Does the problem remain?

Go to step 21.

The problem is solved.

Step 21

Replace the controller board. See Controller board removal.

Does the problem remain?

Contact the next level of support.

The problem is solved.