Diagnostic Information 2-19
4400-001
Fax/Telephone Communication Service Check
FRU / Function Action
1 Line Interface
Board or 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.
Before dialing, press the Speaker button so you
can hear the dialing process. You should hear the
ring and a 0.5 second 1000 Hz calling tone from
your machine, a 1 second pause, then the 3
second 2100 Hz fax response tone and a 1650 Hz
- 1850 Hz “warbling” handshaking tone from the
called machine.
Check the connectors on the line interface board
P1 and P2. If okay, check connector CN15 located
on the system board. If problem still exists, replace
the line interface board. Go to the “Line Interface
Board Removal” on page 4-13. If this does not
correct the problem, replace the system board. Go
to the “System Board Removal” on page 4-21.
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.
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