Lexmark 4200 Series Service Manual page 20

4413-XXX
Symptom
Document scan sensor does not
detect document
Printer communication problem
Symptom
Not able to print Self Test Page
Phone handset/cradle problem
Symptom
No dial tone
Handset does not work
2-4
Service Manual
Action
Check control panel cable connector
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
panel assembly removal" on
page 4-13.
Action
Check the USB cable and system
board cable connections. If okay,
replace system board. Go to the
"System board removal" on
page 4-19.
Action
Check all phone connections. Be
sure the main phone connection is
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.
"Control