Konica Minolta Bizhub 4020 User Manual page 342

Action
Step 5
Check the telephone wall jack.
Plug the telephone cable into the wall jack.
Listen for a dial tone.
If you do not hear a dial tone, then plug a different telephone
cable into the wall jack.
If you still do not hear a dial tone, then plug the telephone
cable into a different wall jack.
If you hear a dial tone, then connect the printer to that wall
jack.
Try sending or receiving a fax.
Can you send or receive a fax?
Step 6
Check if the printer is connected to an analog phone service or
the correct digital connector.
The fax modem is an analog device. Certain devices can
be connected to the printer so that digital telephone
services can be used.
If you are using an ISDN telephone service, then connect the
printer to an analog telephone port (an R-interface port) on an
ISDN terminal adapter. For more information and to request an
R-interface port, contact your ISDN provider.
If you are using DSL, then connect to a DSL filter or router that
will support analog use. For more information, contact your
DSL provider.
If you are using a PBX telephone service, then make sure you
are connecting to an analog connection on the PBX. If none
exists, then consider installing an analog telephone line for the
fax machine.
Is the printer connected to an analog phone service or the
correct digital connector?
User's Guide
Yes
The problem is
solved.
Go to step 7.
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No
Go to step 6.
Connect the printer to an analog
phone service or the correct
digital connector.