Read Sharp MX-GBX1 Service Manual online
38
For the SmartPunch to operate, all optical sensors must be clear. Any blocked sensor or open door will
prevent operation. The machine may operate in bypass mode with or without a chip tray or die set. Both
of these must be present to punch.
prevent operation. The machine may operate in bypass mode with or without a chip tray or die set. Both
of these must be present to punch.
Stepper #1 Control:
If punch is not enabled, the SmartPunch will run in bypass mode (no punching). Either the multi-function
printer or the first sheet entering the machine will turn on both stepper motors. The time is measured for
the leading edge of the first sheet to pass sensor 8. Knowing the distance between sensors and the time
it takes for the sheet to pass both sensors, we can determine the speed of the paper. The time is
compared to a list and Stepper 1 and stepper 2 are adjusted to closely match the incoming speed.
printer or the first sheet entering the machine will turn on both stepper motors. The time is measured for
the leading edge of the first sheet to pass sensor 8. Knowing the distance between sensors and the time
it takes for the sheet to pass both sensors, we can determine the speed of the paper. The time is
compared to a list and Stepper 1 and stepper 2 are adjusted to closely match the incoming speed.
If the punch is enabled, the backstop is raised, the brake is engaged, and both the transport and punch
motors are started. Also, the divert solenoid is activated to direct the sheets into the punch path. As
above, the input speed is measured, this time using Sensor 1 and 2. Stepper 1 is adjusted to meet the
measured input speed; Stepper 2 is accelerated to the speed of the transport motor. Sensor 2 now
delays for a time period based on the input speed to ensure that the sheet has cleared the multi-function
printer exit roller. After this delay, stepper 1 accelerates the sheet to match the transport speed. 19 msec
after the sheet’s trailing edge passes sensor 2, Stepper 1 is decelerated to match the previously
measured input speed.
motors are started. Also, the divert solenoid is activated to direct the sheets into the punch path. As
above, the input speed is measured, this time using Sensor 1 and 2. Stepper 1 is adjusted to meet the
measured input speed; Stepper 2 is accelerated to the speed of the transport motor. Sensor 2 now
delays for a time period based on the input speed to ensure that the sheet has cleared the multi-function
printer exit roller. After this delay, stepper 1 accelerates the sheet to match the transport speed. 19 msec
after the sheet’s trailing edge passes sensor 2, Stepper 1 is decelerated to match the previously
measured input speed.
Punch Control:
The punch cycle begins 40 msec after the leading edge of the sheet reaches Sensor 3. The brake is
released, and the clutch is engaged. Sensor 9 now looks for the leading edge of its flag, and when seen,
the clutch is disengaged, and the backstop is lowered. When the trailing edge of the flag is seen, the
brake is engaged. When Sensor 3 sees the trailing edge of the sheet, the backstop is raised.
released, and the clutch is engaged. Sensor 9 now looks for the leading edge of its flag, and when seen,
the clutch is disengaged, and the backstop is lowered. When the trailing edge of the flag is seen, the
brake is engaged. When Sensor 3 sees the trailing edge of the sheet, the backstop is raised.
Stepper #2 Control:
72 msec after the leading edge of the sheet passes Sensor 6, Stepper 2 is decelerated to match the
measured input speed from the multi-function printer. This delay ensures that the sheet exits from the
transport rollers. When the trailing edge of the sheet passes Sensor 6, Stepper 2 is accelerated to match
the speed of the transport motor.
measured input speed from the multi-function printer. This delay ensures that the sheet exits from the
transport rollers. When the trailing edge of the sheet passes Sensor 6, Stepper 2 is accelerated to match
the speed of the transport motor.
Click on the first or last page to see other MX-GBX1 service manuals if exist.