40
KX-FLB802CX/KX-FLB812CX/KX-FLB802CXS/KX-FLB812CXS
6.8.3. FB (Flatbed) MOTOR DRIVE CIRCUIT
1. Functions
This motor functions for main operations including FAX transmission, FB copy and PC scan.
This motor feeds CIS unit with synchronizing for reading.
2. Motor operation
During motor driving, pin 99 of ASIC IC604 becomes high level, motor driver IC54 becomes active mode.
Stepping pulses are output from ASIC IC604 pins, 100 ~ 105, causing driver IC54 pins 4, 6, 9 and 7 to drive the motor coil.
The motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation.
A 1-step rotation feeds 0.021mm of CIS unit.
6.8.3.1. TIMING CHART
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