Electrical Component Summary - Ricoh B234 Service Manual

3.3.5 ELECTRICAL COMPONENT SUMMARY

Motors
No.
M1 1st Lift Motor
M2 1st Paper Feed Motor
M3 1st Pick-up Motor
M4 1st Transport Motor
M5 2nd Feed Motor
M6 2nd Lift Motor
M7 2nd Pick-up Motor
M8 2nd Transport Motor
M9 Horizontal Transport Motor
M10 Vertical Transport Motor
PCBs
No.
PCB1 Driver Board
PCB2 Main Control Board
Sensors
No.
S1 1st Tray Cover Sensor
S2 1st Lower Limit Sensor
S3 1st paper set sensor
S4 1st Paper Feed Sensor
S5 1st Paper Length Sensors
S6 1st paper upper limit sensor
S7 1st Pick-up Roller HP Sensor
S8 1st Transport Sensor
S9 1st Transport Sensor
SM
Name
Name
Controls operation of the unit. (All DIP SWs should be
set to OFF.)
Name
35
OVERALL MACHINE INFROMATION
Description
Drives the bottom plate of the 1st tray up and
down.
Rotates the feed rollers that feed paper from the
1st tray.
Moves the 1st pick-up roller up and down.
Drives the 1st Transport roller that takes the paper
fed from the 1st feed roller and feeds it to the
vertical path.
Rotates the feed rollers that feed paper from the
2nd tray.
Drives the bottom plate of the 2nd tray up and
down.
Moves the 2nd pick-up roller up and down.
Drives the 2nd Transport roller that takes the
paper fed from the 1st feed roller and feeds it to
the vertical path.
Drives the rollers in the horizontal path that feed
paper from the copier and covers from the vertical
path out of the cover interposer tray.
Drives the rollers in the vertical path that feed the
covers down to the horizontal path.
Description
Description
Detects when the 1st tray cover is open/closed.
Detects 1) whether the 1st tray is down or not
when the tray is not operating, and 2) detects
when the tray is full when the 1st tray is
operating.
Detects paper end after the last sheet feeds
from the 1st tray.
Detects paper placed on the tray and starts the
1st lift motor to raise the bottom plate. This
sensor also detects a jam if the paper stops and
does not leave the 1st tray
Used in combination with 1st tray width sensors
to determine the size of paper in the 1st tray.
When an actuator falls into the gap of this
sensor, this signals paper near end in the 1st
tray.
Detects whether the 1st pick-up roller is up or
not.
Detects jams at the point where the 1st
Transport roller pulls paper from the 1st tray.
Detects jams in the path of the 1st tray.
B835