4-16 Phaser 6121MFP Service Manual
General Troubleshooting
Reception Fault
1. Cannot Receive.
a. Fax memory is full.
Cause: An attempt was made to send document data in excess of the
available memory capacity.
Corrective Action: On the receiving side, wait until the current fax job is
printed completely.
b. The printer displays some fault messages.
Cause: A fault occurred in the printer.
Corrective Action: Refer to the appropriate fault error procedures to resolve
the problem.
c. Distinctive ring pattern detection fails.
Cause: The distinctive ring pattern is set incorrectly (applicable only in USA
and Canada).
Corrective Action: Check the ring pattern provided by the telephone service
provider, and select the correct pattern for fax.
2. Problem with printing quality, such as corrupted image, lines in image, or
top/bottom cut off.
a. If copy function is normal.
Cause: Degraded telephone line connection is caused by noise, etc., or a fault
occurs in the sending Fax’s scanner.
Corrective Action: Determine whether fault is in the telephone line or at
sending Fax by trying the copy function at sending Fax.
If the telephone line condition is degraded, white horizontal lines, missing
rows, and/or image cut-off at either top or bottom may occur. Branch
connections or an incoming call (Call Waiting) may also cause image
corruption.
b. If copy function is faulty.
Cause: Dirt or fault in printer.
Corrective Action: Clean all parts of the printer or repair the printer.
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