Specifications

12.3 ELECTRICAL COMPONENT DESCRIPTIONS
Symbol Name Function Location
Motors
M1 Belt Drive Motor DC servomotor that drives to the transport
belt and feed-in system (pick-up roller, feed
roller, pull-out roller and relay roller).
6
M2 Feed-out Motor DC servomotor that drives the feed-out unit
of the DF.
10
Solenoids
SOL1 Pick-up Solenoid Energizes to press the pick-up lever
against the stack of originals in preparation
for original feed-in.
5
SOL2 Feed-in Solenoid Turns on to engage the feed-in clutch so
rotation is transmitted to the feed roller,
pull-out rollers, and relay rollers.
14
SOL3 Inverter Solenoid Energizes to invert the original when
copying two sided originals.
11
Switches
SW1 Lift Switch Informs the CPU when the DF is lifted and
also serves as the jam reset switch for the
DF.
8
SW2 Original Select
Switch
Selects thick original mode or thin original
mode.
13
Sensors
S1 Original Set
Sensor
Informs copier CPU that originals have
been placed and causes the Insert Original
indicator to go out.
1
S2 Registration
Sensor
Sets original stop timing and measures
original length.
2
S3 Original Width
Sensor
Determines the width of the originals. 4
S4 Pulse Generator
Sensor
Generates pulses used to measure the
original length.
3
S5 Feed-out Sensor Checks for original misfeeds and sets
original stop timing when in auto reverse
mode.
12
S6 DF Position
Sensor
Detects when the document feeder is
positioned about 10 cm above exposure
glass.
15
Printed Circuit Boards
PCB1 DF Main Board Controls all DF functions. 9
PCB2 Indicator Panel
Board
Contains operator indicators. 7
1 December 1990
11-27