Ricoh B286 Service Manual page 603

NUMBER
Paper Exit Selection
S19
Sensor
S20 Paper Registration Sensor
S21 Paper Set Sensor
S22 Relay Sensor
S23 RF Exit Sensor
S24 RF Set Sensor
S25 Roll End Sensor 1
S26 Roll End Sensor 2
SM
NAME
This detects the position of the paper exit
selection lever on the top rear edge of the
machine. This sensor on the SIB board.
This detects paper at the registration rollers.
This detects when a cut sheet is placed on the
manual feed table (by-pass).
This sensor is near the grip rollers, and (1)
Detects the leading edge of every cut sheet,
switches off the cassette paper feed clutch,
and switches on the grip rollers, (2) Detects
paper jams where the paper feeds out of the
paper cassette.
(1) Detects the leading edge of the paper from
the rolls.
(2) Detects the trailing edge of cut sheets from
the paper cassette and trailing edges of
sheets cut from the paper rolls for paper feed
timing and jam detection.
(3) If this sensor does not detect a leading
edge after feeding from Roll 1 or Roll 2, it also
signals paper end for the roll.
This detects if the spring-loaded lock lever of
the roll feeder drawer is locked.
This reflective photosensor above Roll 1
detects the core of the roll (which is black),
after there is no more paper on Roll 1.
This reflective photosensor above Roll 2
detects the core of the roll (which is black),
after there is no more paper on Roll 2.
6-95
Electrical Components
DESCRIPTION
B286/B289