Lexmark 4200 Series - Manual (Page 34)

2-18 Service Manual
4413-XXX
Fax/telephone communication service check
FRU / Function Action
1 System Board
Cannot make
telephone
connection to
other fax.
No dial tone
Verify correct dialing method (tone or pulse). Are
TEL and LINE connections reversed? Verify phone
number and availability of other fax machine.
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
faxes Are TEL and LINE connections reversed? Is a
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.