Service manual

CPU Assembly Connectors
A-8
Table A-5 Control Board Connector J303 to Paper Sensor
Pin Signal Pin Signal
1 DOOR 4 GROUND
2 GROUND 5 DETECTOR
3 EMITTER
Signal Definition
DETECTOR Paper sensor detector.
DOOR Indicates the state of the printer compartment door. High when door
closed.
EMITTER Paper sensor emitter.
Table A-6 Control Board Connector J306 to Printer Motor
Pin Signal Pin Signal
1 PHASE4 4 PHASE2
2 V_MOTOR 5 V_MOTOR
3 PHASE3 6 PHASE1
Signal Definition
PHASE1-PHASE4 Drive signals for the printer’s four-phase stepper motor.
V_MOTOR Power to the motor. Enabled with +5READY signal.