
Chapter 1 – About the Printer
6824 Mobile Full Page Printer User Manual 7
Restore Default Communication Settings From the Control Panel
If you cannot connect to the printer, you may need to restore the default
communications settings (Baud Rate, Data Bit, Stop Bit, Parity, and Buffer
Control). Follow these steps to restore the default communications settings from
the printer control panel.
1Press and hold READY/CLEAR, and then press POWER/SLEEP to turn the
printer off.
2Press POWER/SLEEP to turn the printer on, and then immediately press and
hold READY/CLEAR.
3Release READY/CLEAR. The printer automatically restarts.
Restore All Default Settings From the Control Panel
Follow this procedure to restore all printer settings to their default values from
the printer control panel.
1Press and hold READY/CLEAR, and then press POWER/SLEEP to turn the
pinter off.
2Press POWER/SLEEP to turn the printer on, and then immediately press and
hold READY/CLEAR and PARK.
3Release READY/CLEAR and PARK. The printer automatically restarts and
all settings are restored to the default values.
Error States
When there is a printer error, the indicators turn on or off or blink to alert you of
the error. Use the next table to understand the possible errors and how to
recover from errors.
Error State Descriptions
Error Type Indicator Behavior Description and Recovery
Paper empty READY: Normal
FAULT: On
TRACTOR: Normal
Paper is not loaded in the print mechanism. To
recover, load paper.
Paper jam READY: Normal
FAULT: Blinking every 1.2 seconds
TRACTOR: Normal
You pressed PARK to reverse feed paper, and
the printer could not detect the end of the paper.
To recover, press PARK several more times until
the paper is out of the print mechanism, or
remove paper manually.
Serial I/F communication
error READY: Normal
FAULT: Blinking every 1.2 seconds
TRACTOR: Normal
There is a serial parity error, framing error, or
buffer overrun error. The printer prints a question
mark ‘?’ character. To recover, press READY/
CLEAR twice. If the error occurs again, you need
to check the serial communications parameters.
Printhead temperature
error READY: Off
FAULT: Blinking every half second
TRACTOR: On
The printhead temperature is too hot or too cold
(less than -40 °C or more than 150 °C). To
recover, turn off the printer to allow the printhead
to cool down.