Samsung SF-4500 Service Manual page 39

/HEAD-EN
/HGA1
/HGA2
/HGA3
/HGA4
/HGA5
/HGA6
/HGA7
/HGA8
/HGA9
/HGA10
/HGA11
/HGA12
/HGA13
HOE1-
HOE16
(Tp)
The above control signals are sent to head driver and
the head driver converts these signals to the level
(+11.75V) to drive head nozzles.
5-1-2-8. PRINTER MOTOR CONTROLLER
(CRPHA, CRPHB, CRIA0, 1, CRIB0, 1,
LFPHA, LFPHB, LFIA0, 1, LFIB0, 1)
MFP Controller (KS32C6200:U16) supports 2
stepper motors. It controls CR (Carriage Return)
motor used to print documents and LF (Line Feed)
motor used to feed and eject paper.
CR motor controller can support 75, 150, 200, 300,
600, or 1200dpi according to resolution, while LF
motor controller supports uni-polar and bi-polar
6-8
Fig.6-1-9. Timing Diagram for Each Nozzle
according to the kind of motors. Though full step,
half step and software control are possible for both,
bi-polar CR motor is controlled half step and LF
motor is controlled half step and quarter step here.
Samsung Electronics