The motor is driven by magnetism formed in the areas of the coils and the stator. Rotation begins when a HIGH signal is
applied to MICOM Pin 33 of IC10 (TA7774F). This causes an output of HIGH and LOW signals on MICOM pins 34 and 35.
Explanation)
The stepping motor is driven by sending signals of 3.33 mSEC via MICOM pins 33, 34, and 35, as shown in
the chart below. These signals are output via terminals 10, 11, 14, and 15 via input terminals 3, 6, and 8 of
IC10 (TA7774F), the motor drive chip. The output signals allow the coils wound on each phase of the stator to
form a magnetic field, which causes rotation. Input to the terminals INA and INB of IC10 as shown in the chart
below drives the motor.
EXPLANATION FOR MICOM CIRCUIT
INA
INB
A
B
A
B
W
C
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-29-
Summary of Contents for LSC27926
Page 19: ......
Page 25: ...EXPLANATION FOR MICOM CIRCUIT 25 ...
Page 35: ...EXPLANATION FOR MICOM CIRCUIT 35 ...
Page 36: ...EXPLANATION FOR MICOM CIRCUIT 36 ...
Page 37: ...EXPLANATION FOR MICOM CIRCUIT 37 ...
Page 38: ... 38 ...
Page 39: ...EXPLANATION FOR MICOM CIRCUIT 39 ...
Page 40: ... 40 ...
Page 41: ... 41 ...
Page 47: ...4 Ice Maker Circuits ICEMAKERANDDISPENSERWORKINGPRINCIPLESANDREPAIR 47 ...
Page 49: ...CIRCUIT 3854JK1010C 49 ...
Page 83: ...3 6 Brazing Reference Drawings TROUBLE DIAGNOSIS 83 ...
Page 94: ... EV EXPLODED VIEW FREEZER DOOR PART 200A 241F 241G 201A 203A 241G 241E 700A 243A 94 212J ...
Page 101: ...February 2009 MFL62215904 ...