Phaser 6121MFP Service Manual 4-13
General Troubleshooting
Transmission Fault
1. Problem with printing quality at receiving Fax, such as corrupt image, lines in
image, or top/bottom cut off.
a. If a copy is normal.
Cause: Degraded telephone line connection is caused by noise, etc., or a fault
in receiving Fax’s printer.
Corrective Action: Determine whether the fault is in the telephone or
receiving Fax by trying a copy function at the receiving Fax.
If the telephone line is degraded, white horizontal lines, missing rows,
and/or cut-off top/bottom may occur. Branch connections or incoming
call (call waiting) may also cause image corruption.
b. If copy function is faulty.
Cause: Dirt or fault in scanner.
Corrective Action: Clean the document glass or repair the scanner. If the
original is being sent from the ADF, try making a copy with the original placed
on the platen. If this resolves the problem, the fault is in the ADF.
2. Cannot dial.
Cause: No connection. Incorrect setup of dial type and/or line type.
Corrective Action: Reconnect the telephone line. Reset the dial type and/or
line type to correct the settings.
Transmission Failure Troubleshooting Procedure
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Make a phone call to the fax number.
If you don't hear the Fax
communication sounds, the number is
not a fax number.
Is the number correct?
Go to step 2. Retry the fax
transmission
with the
correct
number. If the
problem
persists, go to
step 2.
2 Did the Fax Protocol Report print out? Check the
latest TX result.
If an error code
is displayed,
refer to the
Transmission
Errors list
(page 3-26) for
more
information.
Go to step 3.
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