Lexmark 4200 Series manual Fax/telephone communication service check, Board removal on

4413-XXX

Fax/telephone communication service check

	FRU / Function	Action
1	System Board	No dial tone
	Cannot make	Verify correct dialing method (tone or pulse). Are
	telephone	TEL and LINE connections reversed? Verify phone
	connection to	number and availability of other fax machine.
	other fax.	You should hear the ring and a 0.5 second 1000
		Hz calling tone from your machine, a one second
		pause, then the three second 2100 Hz fax
		response tone and a 1650 Hz - 1850 Hz “warbling”
		handshaking tone from the called machine.
		Check connector CN12 on the system board
		located behind the fire shield. If problem still exists,
		replace the system board. Go to the “System
		board removal” on page 4-19.
2	Cannot receive	Are TEL and LINE connections reversed? Is a
	faxes	telephone on the same line off the hook? Is the
		machine connected to the wrong telephone line?
		Check for a damaged line cord to the machine.
		Check telephone and line cord connections.

2-18Service Manual