Panasonic KX-FLB802CX Service Manual page 38

KX-FLB802CX/KX-FLB812CX/KX-FLB802CXS/KX-FLB812CXS
6.8.2. ADF (Auto Document Feed) MOTOR DRIVE CIRCUIT
1. Functions
This motor functions for main operations including FAX transmission, ADF copy and PC scan.
This motor feeds document papers which are set to ADF with synchronizing for reading.
2. Motor operation
During motor driving, pin 98 of ASIC IC604 becomes a high level, motor driver IC51 becomes active mode.
Stepping pulses are output from ASIC IC604 pins, 100 ~ 105 causing driver IC51 pins 4, 6, 7 and 9 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 0.042mm of document paper.
6.8.2.1. TIMING CHART
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