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2. Hold down the [FEED] key and turn on the power switch.
3, close the paper cover, then print out the following 3 lines:
Hexadecimal Dump
To terminate hexadecimal dump,
Press FEED button three times.
Indicates that the printer enters hexadecimal mode. In this mode, all input will be printed as a
hexadecimal number. Each press of the [FEED] key moves one line, accumulates three times,
and prints out “*** Completed * **", exit the hex print mode.
2.8 Printer Parameter Settings
This function is to set some simple parameters of the printer.
Enter the parameter setting method:
In the off state, first open the [paper bin cover], hold down the [FEED] key, then turn on the
power switch, and then release the [FEED] key after the status light and paper out light flash
alternately. Then press the [FEED] key twice and close the [paper bin cover]. The printer enters
parameter setting mode. And print out the first set of parameters and their current settings. For
detailed setting method, please refer to Appendix A.
Exit the parameter setting method: first open the [paper bin cover], then hold [FEED] key,
then close [paper bin cover] and release [FEED] key, save the set parameter value and exit the
parameter setting mode. Enter normal working mode.
If the printer power is turned off directly, the set parameter values are not saved.
2.9 Entering Program Upgrade Mode
In the off state, first open the [paper bin cover], hold down the [FEED] key, and then turn on
the power switch. After the status light and paper out light flash alternately, release the [FEED]
key. Then press the [FEED] key five times, then close the [paper bin cover]. The printer enters
program upgrade mode. The status indicator flashes at approximately 1 second.
Quick access method: In the off state, first open the [paper bin cover], hold down the [FEED]
key, turn on the power switch, and then quickly release the [FEED] key. The printer enters
program upgrade mode. The status indicator flashes at approximately 1 second.
Note: When the upgrade mode is entered, the out-of-paper indicator light indicates that the
interface cannot perform program upgrades. Currently, only the USB-TypeB interface supports
online program upgrades.
