4-18 Phaser 6121MFP Service Manual
General Troubleshooting
Poor Image Quality in Received Fax Troubleshooting
8 Check that the phone line from the
wall is connected to the Fax LINE
connector.
If the phone jack is correctly install,
you can hear dial tone when press
down the “On hook” key.
Is the telephone line from the wall
connected to the LINE connector?
Go to step 9. Connect the
phone line to
the LINE
connector. If
the problem
persists, go to
step 9.
9 Test your phone line with a telephone.
If the phone number cannot be called,
the problem is with your phone line.
Is your telephone line operating
correctly?
Complete. Call your
telephone
company for
line repair.
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Is the image quality of copies made at
the printer also poor?
Replace the
Imaging Unit
(page 8-6).
Go to step 2.
2 Is the original glass of transmitting
machine dirty?
NOTE
The poor image quality of received fax
may be caused by the TX machine.
Have the
sender clean
the
transmitting
machines
glass, and then
resend the fax.
If the problem
persists, go to
step 3.
Go to step 3.
3 Have the sender verify that the
sending machine is set to a resolution
appropriate for the document that is
being transmitted.
NOTE
The poor image quality of received fax
may be caused by the TX machine.
Complete.
Troubleshooting Procedure Table (continued)
Step Action and Questions Yes No
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