Ricoh BY5020, Руководство по обслуживанию на месте

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2.Detailed Descriptions
29
Electrical Component Summary
Motor
No. Name Description
M1 Feed Motor Drives the paper feed roller in the feed mechanism.
M2 Lift Motor Raises and lowers the bottom plate below the paper stack.
M3 Relay Motor Drives the relay rollers that feed the paper from the bypass tray into the feed
path of the LCT below.
M4 Transport
Motor
Drives the transport roller of the bypass tray that pulls the paper out of the tray
and sends it to the relay roller.
M5 Motor Fan Mounted below the transport motor, cools the area below the feed motor and
transport motor.
PCB
No. Name Description
PCB1 Bypass Unit Control Board Controls operation of all bypass unit electrical components.
Sensors
No. Name Description
S1 Lift Sensor Detects when the paper in the bypass tray is at the proper height for paper feed.
S2 Tray
Lower
Limit
Sensor
Detects when the tray is at its lowest possible position.
S3 Paper End
Sensor
Informs the copier when the paper in the bypass tray has run out.
S4 Paper
Feed
Sensor
Detects the copy paper coming to the 4th paper feed roller and checks for
misfeeds.
S5 Paper
Height
Sensor 1
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.
S6 Paper
Height
Sensor 2
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.
S7 Paper
Length
Sensor
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.