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2.3.3 Power Connection
PR-250 uses the external power supply adopter as 24V±10％、2A,
power socket is A-1009-3P model, as Fig. 2-10 shows:
The pin assignment is as below:
Pin No.
1
2
3
2.4 Buttons and Indicators
There is one button and three indicators on PR-250 printer.【FEED】is paper
feeding button, the function of its enabling or disabling the button on/off can be
set by print command, when the button is enabled, press 【FEED】 button,
then the paper presenting driver starts up and paper feed into the printer;
release【FEED】 button, paper feeding stops. The green POWER light is the
power indicator, red ERROR light is status indicator, it is dark when the printer
works normally, while it flashes when reporting an abnormal emergency, as the
following form shows:
Error
Paper ending
Print head uplift
Print head
overheat
Auto cutter
Position Error
When any error shown above occurs, pin "nFault" of parallel change to "0"
level, and send 1 bit wrong code through serial TXD by itself, it can also send
out the printer state by answer the ESC v command.
Fig.2-8 Power Socket
Signal
+24VDC
Ground
NC
Indicator and Buzzer
Status
"ERROR" indicator flashes Paper is running out
Buzzer rings
Hurried buzzer ring
Buzzer rings and indicator
blinks
9
Description
Put down print head
Recovers automatically
when the print head cools.
Impossible to recover,
check if there is paper jam.
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