FujiFilm Apeos C7070 Reference Manual page 41

Symptom
Unable to communicate
(general fax).
The machine is equipped with multiple connectors to which to connect
phone lines. Communication is enabled only when the phone line is
connected to the correct connector. When the cable connection is
correct, the On-hook feature allows you to call via general lines.
Use a telephone near the machine to check whether you can make a
phone call. If the phone call is disabled, the problem is in the phone
line, not in the machine.
Confirm whether the connection device such as the terminal adapter
or ONU is turned on.
Match the line type set for this machine to the line type (PB/10 pps/20
pps) subscribed for the machine.
The data cannot be sent if the fax machine of the recipient is turned
off, is set to manual receiving mode, or does not support G3 reception.
Paper might have run out or the memory might be full on the
recipient's machine. Call the recipient to confirm the machine
condition.
Check the fax number and try sending it again.
You cannot use "*" and "#" with fax numbers when using G3 DP (Dial
Pulse).
When calling from an extension line, the external access number is
required. When dialing, dial the external access number such as "0",
and then dial the fax number. When the switchboard is changed and
you cannot send faxes by dialing the external access number "0", try
the external access number "0*".
In the case that you specified a recipient from the address book and
appended the external access number when calling, it is possible that
the external access number "0" has already been registered to the
recipient's number listed in the address book. Confirm the telephone
number of the recipient on the Transmission Report - Job Undelivered.
The document data is too large in size.
Lower the resolution to reduce the data size or send the document in
several pieces.
The document is too large in size.
Change the size to the readable size or send the document in small
segments.
The fax network has problems.
Enter two pauses ("-") after "161" or "162", and then dial the
telephone number. Also, check whether a fax network contract has
been concluded.
When using a feature such as the Polling feature, confirm whether the
destination fax supports the feature.
When the Authentication/Accounting feature is used and you send a
fax directly from the computer, set the correct user ID and passcode
registered on the machine to the fax driver.
Additional services for Lines 1 to 3 are not set correctly. Check the line
contract (caller ID display and Dial-In) concluded with your telephone
company and configure settings.
The machine cannot receive a fax when switched off. Switch the
machine power on.
Cause/Remedy
2.7 Troubleshooting
41