Ricoh B022, Service Manual, Page: 403 / 878

ELECTRICAL COMPONENT DESCRIPTION
B386 10-4 SM
1.4 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name Function
Index
No.
Motors
M1
DF Feed Drives the feed belt, separation, pick-up, and
reverse table rollers. 10
M2 DF Transport Drives the transport and exit rollers 11
Sensors
S1
DF Position Detects when the DF is lifted. 9
S2 Registration Detects the leading edge of the original to turn
off the DF feed and transport motors, detects
the original exposure timing, and checks for
original misfeeds. 17
S3 Feed Cover Open
Sensor Detects when the feed-in cover is opened. 2
S4 Original Width
Sensor Board Detects the original width. 3
S5 Original Length - 1 Detects the original length. 4
S6 Original Length - 2 Detects the original length. 6
S7 Original Set Detects if an original is on the feed table. 15
S8 Original Exit Detects the leading edge of the original to turn
on the junction gate solenoid and checks for
original misfeeds.
Detects the trailing edge of the original to turn
off the transport and feed motor and junction
gate solenoid.
In single-sided mode, used to detect original
misfeeds. 12
S9 Original Trailing
Edge Detects the trailing edge of the last original to
stop copy paper feed and to turn off the
transport motor, and checks for original
misfeeds. 14
S10 Original Reverse
Sensor Detects when the original is fed from the
reverse area during duplex scanning. 16
Solenoids
SOL1
DF Pick-up Controls the up-down movement of the original
table. 5
SOL2 Stamp Energizes the stamper to mark the original. 13
SOL3 Junction Gate Opens and closes the junction gate. 7
Clutches
MC1
DF Feed Transfers transport motor drive to the pick-up
roller and feed belt. 1
PCBs
PCB1
DF Drive Interfaces the sensor signals with the copier,
and transfers the magnetic clutch, solenoid and
motor drive signals from the copier. 8