Xerox WorkCentre XK50cx Service Manual

Also see for WorkCentre XK50cx: User guide

4-7CircuitThe above control signals are sent to head driverand the head driver converts these signals to thelevel (+12V) to drive head nozzles.PRINTER MOTOR CONTROLLER• DIR : U15 - 34, Rotation Direction• PWM : U15 - 32, Pulse Width Modulation Output,Active High• LFPHA : U15 - 140, LF Motor Phase A• LFPHB : U15 - 143, LF Motor Phase B• LFIA0, 1 : U15 - 139, 141, LF Motor Phase ACurrent Mode• LFIB0, 1 : U15 - 142, 144, LF Motor Phase BCurrent ModeMFP Controller (KS32C6400:U15) supports both DCmotor and stepper motors. It controls CR (CarriageReturn) motor used to print documents and LF (LineFeed) motor used to feed and eject paper.CR motor controller can support 75, 150, 200, 300,600, or 1200dpi according to resolution, while LFmotor controller supports uni-polar and bi-polaraccording to the kind of motors. Though full step,half step and software control are possible for both,CR motor is controlled half step and LF motor iscontrolled half step and quarter step here.Fig.4-1-7 Timing Diagram for Each Nozzle