Ricoh infotec 3671F Service Manual page 30

DETAILED SECTION DESCRIPTIONS
PRINTING
3. Toner End Detection
The toner end sensor [A] (a
reflective photosensor) is located
under the DTM. When the toner is
almost empty, the sensor's light is
reflected by the mirror [B] at the top
of the toner tank. The machine
monitors this sensor only when the
main motor is on. If the sensor
detects the reflected light 5 times in
a row, within a specified period, the
MCB detects a toner near end
condition, and informs the FCU. The
machine can then print 100 more
sheets, at which time the FCU
disables printing (toner end
condition). At this time the DTM
must be replaced.
2.2.6. Paper Feed
1. Paper Path
[A]: Paper Pick-up Roller
[B]: Paper Feed Unit Pick-up Roller
[C]: Registration Sensor
[D]: Paper Exit Sensor
[E]: Paper End Sensor
[F]: Standard Tray
[G]: Optional Paper Feed Unit
[F]
[G]
[D]
[C]
[A]
[E]
2-13
June 30th, 1996
[B]
[A]
H528D508.wmf
[B]
H528D547.wmf