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2. OPERATIONS
AND TIMING
-
I
,_
I. BASIC CONSTRUCTION
'I
A. Outline of Electrical Circuitry
The paper deck pedestal
is controlled
by signals from its host copier and from its
own controller.
The copier
sends
signals
as pro-
grammed
in advance to the controller
inside
the pedestal.
Lifer poskiin
="SZX
Upper limit
Mitch
Door operJ
closed switch
In response
to the signals
from the
copier and from its own microswitches
and
sensors, the pedestal's
ccntroller
generates
signals to drive its motor and clutches.
Figure
2-201
is a block
diagram
showing
the
relationship
among
the
pedestal's major circuits.
The pedestal is supplied with 24 V, 5 V,
and 220/240 VAC by the host copier.
Papr
deck controll.sr PCB
Figure 2-201
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