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6300 Series Maintenance Manual
10
1.4.2
Sensor Inputs
Paper motion
–
optical
Paper out
–
optical
Platen gap
–
potentiometer
Shuttle motion
–
optical picket-fence sensor
Power supply voltage
–
resistor divider
Ribbon motion
–
Hall-Effect
Ribbon weld detect
–
optical
1.4.3
Motor logic and drive
H bridge motor drive chips (2 for ribbon, 2 for ribbon ink pump (6312), 2 for paper, 2 for
platen gap)
FET drive for solenoid shuttle
1.4.4
EEPROM
Stores engine calibration and printer configuration settings
1.4.5
Serial and Parallel Interfaces
1.4.5.1
Serial
Maxim MAX238 chip is used for the RS-232 drivers and receivers
Both DTR/Busy and XON/XOFF is supported
Standard secondary RTS on pins 11 and 19. Primary RTS is capable of being jumpered
to pin 4.
1.4.5.2
Parallel
Xilinx XC95144 and 74LS244/74LCX244
–
supports IEEE-1284 compatibility and
nibble mode.
Содержание 6300 Series
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