HP Engage One Column Printer User Guide
When to change the receipt paper
Change the paper when it is near the end of the roll or when the roll is empty. When the paper is low, you must
monitor usage to avoid running out part of the way through a transaction. When the roll is empty, you must load
a new roll immediately or data may be lost.
● When the paper is low, a colored stripe appears on the receipt paper (if the paper purchased has a stripe),
indicating that enough paper remains for a small transaction.
● When the roll is empty, a green light on the printer blinks quickly, indicating that the paper must be
installed.
IMPORTANT: Do not try to operate the printer or host computer if the printer runs out of paper. The
printer may continue to accept data from the host computer even though it is unable to print. Data may be
lost as a result.
For instructions on how to change the receipt paper, see Loading the printer receipt paper on page 2.
Testing the printer
If the printer is functioning normally, it beeps once. Otherwise, see Troubleshooting the printer on page 12.
The printer conguration appears on the test (diagnostics) printout.
To run a diagnostic test or verify the conguration:
1. Make sure that paper is loaded in the printer.
2. Open the receipt cover.
3. Press and hold the paper feed button.
4. Continue to hold the paper feed button and close the receipt cover.
5. Continue to hold the paper feed button until the conguration printout begins.
Preventing overheating of the printhead
There are restrictions on the duty cycle because of the heat generated by the thermal printhead when printing
solid blocks (regardless of the length of the block in relation to the print line). The restrictions are ambient
temperature, the percentage of time (measured against one minute) of continuous solid printing, and the
amount of coverage.
Ambient temperature might be aected by factors such as direct exposure to sun or close proximity to heating
elements.
IMPORTANT: When the duty cycle exceeds the limits shown in the table, the receipt printhead heats up and
shuts down. This might damage the printhead.
To avoid this issue:
● Reduce the amount of coverage.
● Reduce the time of continuous solid printing.
● Reduce the ambient temperature.
The percentages in the following table are the percentage of time that the specied amount of solid coverage
can be printed during a 1 minute period. That is, at 20% solid coverage at a 35° C ambient temperature, a 50%
duty cycle is used, resulting in 30 seconds with printing and 30 seconds without printing.
6 Chapter 2 Using the column printer