Ricoh B286, Service Manual

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Electrical Components
B286/B289 6-96 SM
NUMBER NAME DESCRIPTION
S27 Roll End Sensor 3
Detects the trailing edge of the roll after there
is no more paper on Roll 1. This sensor is
included because if the color of the roll core is
not black, Roll End Sensor 1 cannot always
detect roll end.
S28 Roll End Sensor 4
Detects the trailing edge of the roll after there
is no more paper on Roll 2. This sensor is
included because if the color of the roll core is
not black, Roll End Sensor 2 cannot always
detect roll end.
S29 Toner Overflow Sensor
Detects toner overflow in the used toner
collection bottle.
S30 Upper Unit Sensor Detects when the upper unit is open.
S31 Wire Cleaner Sensor
The actuator of this sensor is attached to the
wire that moves the transfer cleaner from left
to right. This tells the machine when the wire
cleaner moves. This sensor is a part of the SIB
board.
Solenoids
SOL1
Paper Junction Gate
Solenoid
This controls the paper junction gate in front of
the rear paper exit and below the upper exit.
When closed, paper feeds out at the top.
When open, paper feeds out at the back.
SOL2 Pick-Off Pawl Solenoid
This moves the pick-off pawls until they touch
the drum.
Switches
SW1 Dehumidifier Switch
Switches the dehumidifiers (x4) in the roll
feeder on/off.