Electrical Component Descriptions - Ricoh A318 Service Manual

1 May 1993

3. ELECTRICAL COMPONENT DESCRIPTIONS

Symbol Name
Motors
M1 Belt Drive Motor
M2 Feed-out Motor
Solenoids
SOL1 Pick-up Solenoid
SOL2 Feed-in Solenoid
SOL3 Inverter Solenoid
Switches
SW1 Lift Switch
SW2 Original Select
Switch
Sensors
S1 Original Set
Sensor
S2 Registration
Sensor
S3 Original Width
Sensor
S4 Pulse Generator
Sensor
S5 Feed-out Sensor
S6 DF Position Sensor Detects when the document feeder is
Printed Circuit Boards
PCB1 DF Main Board
PCB2 Indicator Panel
Board
ELECTRICAL COMPONENT DESCRIPTIONS
Function
DC servomotor that drives to the transport belt
and feed-in system (pick-up roller, feed roller,
pull-out roller and relay roller).
DC servomotor that drives the feed-out unit of
the DF.
Energizes to press the pick-up lever against
the stack of originals in preparation for original
feed-in.
Turns on to engage the feed-in clutch so
rotation is transmitted to the feed roller,
pull-out rollers, and relay rollers.
Energizes to invert the original when copying
two sided originals.
Informs the CPU when the DF is lifted and
also serves as the jam reset switch for the DF.
Selects thick original mode or thin original
mode.
Informs copier CPU that originals have been
placed and causes the Insert Original
indicator to go out.
Sets original stop timing and measures
original length.
Determines the width of the originals.
Generates pulses used to measure the
original length.
Checks for original misfeeds and sets original
stop timing when in auto reverse mode.
positioned about 10 cm above exposure
glass. (A111 copier only)
Controls all DF functions.
Contains operator indicators.
3
Index No.
6
10
5
14
11
8
13
1
2
4
3
12
9
7