AMT Datasouth Accel 7450 - Manual (Page 27)

ACCEL-7450
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Head adjustment lever
This lever sets the gap between the print head and the paper.
For most printing, the lever position should be to AUTO. This setting allows
the printer to measure the paper thickness and adjust the print head gap
automatically.
The print head gap can also be manually set for 1 to 7 part forms.
Special Key Functions
Special key functions are executed by pressing and holding the keys
indicated in the following table while simultaneously turning on the printer
power. Load paper first to avoid error indication.
Function Key
Initialization #1 HIGH IMPACT + LF+POWER
ASCII self-test LF + POWER
Hex Dump SPEED + POWER
Character H printing mode TEAR OFF + POWER
Pin testing HIGH IMPACT + POWER
Alignments adjust ENTER + RLF + POWER
Adjust the tear off position
(For tractor paper) Online state, press and hold the TEAR OFF key
three seconds.