THEORY
Electrical
SERVICE MANUAL
2-12
6.2. Carriage Motor Control
The carriage motor control circuit is shown in Fig. 2.10. +24 VDC is supplied to the
motor through connector CN3, pin 5. Motor phases A, B, C, and D are driven by the
CBIC (#8) through pins 150 - 153, respectively. The outputs of the CBIC turn darlington
transistors Q1 - Q4 on and off, which in turn affect the motor phases.
Fig. 2.10 Carriage Motor Drive Circuit
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