Troubleshooting
Indicators
If the green power indicator is on, but the printer is not
printing, press the SET PAGE button. If the indicators
light up, refer to Table 5-2:
PAPER
Sets of Beeps
OUT
1 beep
OFF
1 set of 2 beeps
OFF
1 set of 3 beeps
OFF
1 set of 4 beeps
OFF
1 set of 13 beeps
OFF
2 sets of 2 beeps
OFF
2 sets of 3 beeps
ON
2 sets of 4 beeps
OFF
2 sets of 5 beeps
5 blinks 5 blinks 5 blinks Paper feed current fault (Possible
3 sets of 2 beeps
3 blinks OFF
3 sets of 4 beeps
OFF
4 sets of 2 beeps
4 blinks 4 blinks OFF
4 sets of 4 beeps
Erratic
12 sets of 12 beeps OFF
5-14
6820 Printer User's Guide
Table 5-2
Printer Failure Indicators
HEAD
LOW
JAM
BATT
Meaning
OFF
ON
12V under voltage fault (Low
Battery)
OFF
2 blinks 12V over voltage fault (Input
Voltage too high)
OFF
3 blinks 24V under voltage fault (internal
power supply failure)
OFF
4 blinks 24V over voltage fault (internal
power supply failure)
OFF
OFF
Configuration error
2 blinks 2 blinks Print head over temperature
OFF
OFF
Paper Out
ON
OFF
Head Jam
paper jam or paper feed motor
failure)
3 blinks Print head over current (Print
head failure)
3 blinks OFF
Home switch failure
Print head short (Print head
failure)
Erratic
Erratic
Flash write error
OFF
OFF
Operating System software failure
SECTION 5