Read Sharp MX-PNX1C (serv.man12) Service Manual online
MX-FNX1/MX-PNX1 ELECTRICAL SECTION 10 – 4
2)
Bundle exit motor (FAM) drive circuit
This circuit controls rotation/stop rotating direction and current of the bundle exit motor (FAM), and is composed of the CPU (IC10), the DA
converter (IC11), and the constant-current chopper system driver IC (IC8). The motor rotating speed and the rotting direction are controlled
with the stepping motor drive excitement pattern signal (T_MOT_A, *A, B, *B) outputted from the CPU (IC10-79, 80, 81, 82pin).
The analog signal (T_MOT_REF) outputted from the DA converter (IC11-5pin) is divided into a certain voltage with R74 and R75. The
divided voltage is inputted to IC8-3, 14 pin to set the motor current value.
This circuit controls rotation/stop rotating direction and current of the bundle exit motor (FAM), and is composed of the CPU (IC10), the DA
converter (IC11), and the constant-current chopper system driver IC (IC8). The motor rotating speed and the rotting direction are controlled
with the stepping motor drive excitement pattern signal (T_MOT_A, *A, B, *B) outputted from the CPU (IC10-79, 80, 81, 82pin).
The analog signal (T_MOT_REF) outputted from the DA converter (IC11-5pin) is divided into a certain voltage with R74 and R75. The
divided voltage is inputted to IC8-3, 14 pin to set the motor current value.
3)
Roller up/down motor (FSWM) drive circuit
This circuit controls rotation/stop and the rotating direction of the roller up/down motor (FSWM) and the motor current, and is composed of
the CPU (IC10), the DA converter (IC11), and the constant-current chopper system driver IC (IC16). The motor rotating speed and the
rotating direction are controlled with the stepping motor drive excitement pattern signal (RO_MOT_A, *A, B, *B) outputted from the CPU
(IC10-75, 76, 77, 78pin).
The analog signal (RO_MOT_REF) outputted from the DA converter (IC11-4pin) is divided into a certain voltage with R90 and R114. The
divided voltage is inputted to IC16-3, 14pin to set the motor current value.
This circuit controls rotation/stop and the rotating direction of the roller up/down motor (FSWM) and the motor current, and is composed of
the CPU (IC10), the DA converter (IC11), and the constant-current chopper system driver IC (IC16). The motor rotating speed and the
rotating direction are controlled with the stepping motor drive excitement pattern signal (RO_MOT_A, *A, B, *B) outputted from the CPU
(IC10-75, 76, 77, 78pin).
The analog signal (RO_MOT_REF) outputted from the DA converter (IC11-4pin) is divided into a certain voltage with R90 and R114. The
divided voltage is inputted to IC16-3, 14pin to set the motor current value.
4)
Staple shift motor (FSM) drive circuit
Bundle exit motor (FAM)
Not installed
Roller up/down motor (FSWM)
Not installed
Staple shift motor (FSM)
Not installed
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