Konica Minolta FK-502 - Manual (Page 114)

Reception 4
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Reception
Chapter 4
4.4 Unable to Receive
When you cannot receive faxes, the error message is displayed. Take
corrective actions by referring to "Error Message Displayed" on page 5-5.
Press [Stop] to clear the error message display.
!
Detail
If the external telephone continues to ring, Receive mode (Auto/Man) may
be set to Manual RX in Telephone Line Settings of Utility Mode.
This must be set to Auto RX to receive documents automatically. For
details, see "Telephone Line Settings" on page 11-30.
Documents may not be able to be received memory is full. In addition,
check that there is paper in the paper tray.
For details, see "Cannot Receive Messages" on page 5-3.