Lexmark 4200 Series manual To the Scanner motor with gear, Assembly service check on

4413-XXX

Symptom	Action
Document scan sensor does not	Check control panel cable connector
detect document	CN5 on the system board. If okay, go
	to the “Scanner motor with gear
	assembly service check” on
	page 2-9. If the scanner motor is
	working correctly, replace the control
	panel assembly. Go to the “Control
	panel assembly removal” on
	page 4-13.
Printer communication problem
Symptom	Action
Not able to print Self Test Page	Check the USB cable and system
	board cable connections. If okay,
	replace system board. Go to the
	“System board removal” on
	page 4-19.
Phone handset/cradle problem
Symptom	Action
No dial tone	Check all phone connections. Be
	sure the main phone connection is
Handset does not work	connected to the printer.Check pins
	5 and 6 for approximately 3 volts on
	connector CN11 located on the
	system board. If voltage is not
	correct, replace the system board.
	Go to the “System board removal”
	on page 4-19. If problem still exists,
	replace the handset and cradle. Go
	to “Handset and cradle removal”
	on page 4-24.

2-4Service Manual