Oce 3121 Technical & Service Manual page 715

a.Moving the bin UP
To move the bin up, the microprocessor (Q7) generates:
the bin shift motor UP signal BMUP=1
and the bin shift motor DOWN signal BMDWN=0
.
BMUP=1
I
BMDWN=0
I
b.Moving the bin DOWN
To move the bin down, the microprocessor (Q7) generates:
the bin shift motor DOWN signal BMDWN=1
and the bin shift motor UP signal BMUP=0
BMDWN=1
I
BMUP=0
I
Stopping the movement of the bin
The motor (M1) stops when the microprocessor (Q7) generates:
the bin DOWN signal BMDWN=0
and the bin UP signal BMUP=0.
The microprocessor generates BMDWN=0 and BMUP=0 when :
(1) the bin unit moves up/down by a single bin, or
(2) when the bin DOWN signal BLL=1 is generated.
ed.1
Q39 is switched ON.
Q16 is switched ON.
Q53 is switched OFF.
Q18 is switched OFF.
A reverse current flows to ZD13, and Q19 is
switched ON.
Q53 is switched ON.
Q18 is switched ON.
Q39 is switched OFF.
Q16 is switched OFF.
A reverse current flows to ZD11, and Q17 is switched
ON.
Q17 is switched OFF.
24 V is applied to the motor M1.
Q19 is switched OFF.
24 V is applied to the motor M1.
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