2A3/4
2-3-10
2-3-7 DF driver PCB
Motor
driver IC
Motor
driver IC
Main
PCB
24 V DC
DFDPCB
24 V DC
24 V DC
OCM A
OCM
OFM
OCM B
OCM A
OCM B
OFM A
Switches
Clutches,
solenoids
OFM B
OFM A
OFM B
24 V DC
Figure 2-3-7 DF driver PCB block diagram
The DF driver PCB (DFDPCB) consists of a motor drive ICs and several other
components. It mainly serves to drive the original feed motor (OFM) and the original
conveying motor (OCM), under the control of signals received form the main PCB
(MPCB). It also relays the 24 V DC power supply to the SRDF clutches and solenoids
and the 5 V DC power supply to various switches and drives, and relays inputs and
outputs of other signals.
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