Job waiting message appears on screen.

You can selectively clear information stored in your machine’s memory.
1. Press Setup on the control panel. The display shows the first menu;
FAX NUMBER/NAME.
2. Press ➛ or ❿ until ‘MEMORY CLEAR’ appears, then press
Start/Enter. The display shows the items you can choose to clear.
• FAX NUMBER/NAME : your fax number and name are cleared from
the machine’s memory.
• DIAL/SCHEDULE : clears the one-touch, speed dial, or group dial
numbers stored in the memory. In addition, all
the Schedule Job operations you have reserved
are also cancelled.
• JOURNAL : clears all records of transmissions & receptions.
• DEFAULT SETUP : restores all the option settings to factory default.

Only clear de Journal, don't clear the other.
Try this if it resolve the problem.