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2-4 Service Manual
4413-XXX
Printer communication problem
Phone handset/cradle problem
Document scan sensor does not
detect document
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 “Control
panel assembly removal” on
page 4-13.
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.
Symptom Action
No dial tone
Handset does not work
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.
Symptom Action