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3.4 Description of control functions
1.
Buffer full automatic print
When the input buffer is filled up by the character data, it starts the printing automatically.
2.
Self test printing
This LSI has a built in self print function.
Take the following procedures to test.
a)
Set the paper properly.
b)
Turn off the power switch.
c)
Turn on the power switch while keeping the PF signal to the low level, then set it to the high level.
d)
To stop the printing, turn off the power switch or set RESET signal to low level.
3.
Emergency Stop Function
When the following abnormalities are detected during the print operation, cut off the power to the print head
solenoids and motor, and put the LSI in the power down mode.
The emergency stop can be cleared by resetting the LSI.
Printer abnormalities are as follows.
a)
Motor lock.
b)
Operation defect in the timing detector (DP signal)
c)
Operation defect in the reset detector (RP signal)
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CBM-909PC Series User'sManual
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