Ricoh A151 Field Service Manual page 341

3. ELECTRICAL COMPONENT DESCRIPTIONS
Symbol Name
Motor
M1 DF Motor
Solenoid
Pick-up Solenoid
SOL1
Clutch
Feed Clutch
CL1
Switch
Lift Switch
SW1
Sensors
Pulse Generator
S1
Sensor
Original Set Sensor
S2
Registration Sensor
S3
Printed Circuit Board
PCB1 DF Main Board
DF Interface Board
PCB2
Transformer
TR1 DF Transformer
LEDs
SADF Indicator
LED1
Insert Original
LED2
Indicator
SM
ELECTRICAL COMPONENT DESCRIPTIONS
Function
Drives all the document feeder components.
Energizes to press the pick-up lever against
the stack of originals in preparation for
original feed-in.
Turns on to transmit main motor rotation to
the feed roller.
Informs the CPU when the DF is lifted and
also serves as the misfeed reset switch for
the DF.
Supplies timing pulses to the DF main board.
Informs the copier CPU that originals have
been placed and causes the Insert Original
indicator to go out.
Sets original stop timing and checks for
original misfeeds.
Controls all DF functions.
Interfaces between the copier main board
and the DF.
Steps down the wall voltage to 25 volts ac.
Informs the operator that the SADF mode is
available.
Turns off when the originals are inserted into
the original table.
9-3
Index No.
6
1
4
9
5
3
2
10
12
11
8
7
A202/A203