Lexmark MX6500E manual Hardware and internal option problems, Scanner display is blank

Troubleshooting			311
	Action	Yes	No
	Step 11	Go to step 12.	Install the correct
	Check the installed printer driver.		printer driver.
	Is the correct printer driver installed?
	Step 12	The problem is solved.	Contact customer
	Turn off the printer, then wait for about 10 seconds, and then turn it back		support.
	on.
	Is the printer working?
Scanner display is blank
	Action	Yes	No
	Step 1	The problem is solved.	Go to step 2.
	Press the Sleep button on the scanner control panel.
	Does Ready appear on the scanner display?
	Step 2	The problem is solved.	Turn off the scanner,
	Turn off the scanner, then wait for about 10 seconds, and then turn it back		and then contact
	on.		customer support.
	Do Please wait and Ready appear on the scanner display?
Hardware and internal option problems
Cannot detect internal option
	Action	Yes	No
	Step 1	The problem is solved.	Go to step 2.
	Turn off the scanner, then wait for about 10 seconds, and then turn it back
	on.
	Does the internal option operate correctly?
	Step 2	Go to step 3.	Connect the internal
	Check if the internal option is properly installed in the controller board.		option to the controller
	a Turn off the scanner using the power switch, and then unplug the		board.
	power cord from the electrical outlet.
	b Make sure the internal option is installed in the appropriate connector
	in the controller board.
	c Connect the power cord to the scanner, then to a properly grounded
	electrical outlet, and then turn on the scanner.
	Is the internal option properly installed in the controller board?