Electrical Component Summary - Ricoh B234 Service Manual

OVERALL MACHINE INFORMATION

3.2.2 ELECTRICAL COMPONENT SUMMARY

Motors
No. Name
M1 Feed Motor
M2 Lift Motor
M3 Relay Motor
M4 Transport Motor
PCB
No.
PCB1 Bypass Unit Control Board
Sensors
No.
S1 Lift Sensor
S2 Tray Lower Limit Sensor
S3 Paper End Sensor
S4 Paper Feed Sensor
S5 Paper Height Sensor 1
S6 Paper Height Sensor 2
S7 Paper Length Sensor
S8 Relay Sensor
Solenoids
No.
SOL1 Pick-up Solenoid
Switches
No.
SW1 Tray Lift Switch
SW2 Paper Width Switches
B833
Drives the paper feed roller in the feed mechanism.
Raises and lowers the bottom plate below the paper stack.
Drives the relay rollers that feed the paper from the bypass tray into
the feed path of the LCT below.
Drives the transport roller of the bypass tray that pulls the paper out
of the tray and sends it to the relay roller.
Name
Name
Detects when the paper in the bypass tray is at the proper height
for paper feed.
Detects when the tray is at its lowest possible position.
Informs the copier when the paper in the bypass tray has run
out.
Detects the copy paper coming to the 4th paper feed roller and
checks for misfeeds.
Paper end sensor. The paper height sensor pair (1 and 2) work
together to monitor the height of the paper stack in the bypass
tray.
Paper near end sensor. The paper height sensor pair (1 and 2)
work together to monitor the height of the paper stack in the
bypass tray.
Used with the paper width switch to determine paper size. This
sensor is activated when paper is set for short edge feed. For
example, when the paper width switch detects A4 width and this
sensor is off, the machine determines A4 is set for long edge
feed. When A4 width is detected and the paper length sensor is
on, then the machine determines that A3 is loaded for short
edge feed.
Detects jams in the paper path after paper is fed from the feed
roller..
Name
Controls up-down movement of the pick-up roller in the bypass
tray.
Name
Switches the tray lift motor on and off to raise and lower the
bottom plate of the tray to the feed position. This switch must be
pressed to start paper feed.
A slide switch connected to the side fences. When the side
fences are moved to match the paper width, four feelers inside
the paper size switch slide along wiring patterns of a terminal
plate. The wire pattern detected determines the paper width.
Description
Description
Controls operation of all bypass unit electrical components.
Description
Description
Description
18 SM