ELECTRICAL COMPONENT DESCRIPTIONS
SM 6-13 B234/B235/B236/D101/D102/D103
Detailed
Descriptions
Number Name Description
Sensors
of the 1st tray.
S35 Lower Bottle Inner Cap Sensor Detects when the inner cap of the upper
toner bottle is opened.
S36 Lower Limit Sensor After the tandem tray is empty, the tray
lowers until this sensor detects the tray.
S37 Lower Toner Bottle Sensor Detects when the lower toner bottle is set.
S38 Original Length Sensor 1 Detects the original length.
S39 Original Length Sensor 2 Detects the original length.
S40 Original Width Sensors APS1 (a board) holds 3 original width
sensors under the exposure glass. The
detection combinations of these sensors are
sent to the CPU to determine the width of the
original on the exposure glass positioned for
LEF. Each sensor consists of an LED and
receptor pair to detect the width of paper on
the exposure glass above. APS2, APS3
(boards) each hold 1 original length sensor
under the exposure glass. The detection
combinations of these sensors are sent to the
CPU to determine the length of the original
on the exposure glass positioned for SEF.
Each sensor consists of an LED and receptor
pair to detect the width of paper on the
exposure glass above.
S41 Rear Fence HP Sensor Informs the CPU when the tandem tray rear
fence is in the home position.
S42 Rear Fence Return Sensor Informs the CPU when the tandem tray rear
fence is in the return position.
S43 Rear Side Fence Closed Sensor Detects whether the tandem tray rear side
fence is closed.
S44 Rear Side Fence Open Sensor Detects whether the tandem tray rear side
fence is opened.
S45 Registration Sensor Detects misfeeds and controls registration
motor on/off timing.
S46 Right Tray Paper Set Sensor Detects paper in the right side of the tandem
tray (Tray 1).
S47 Scanner HP Sensor Informs the CPU when the 1st and 2nd
scanners are at home position.
S48 TD Sensor The Toner Density sensor measures the
concentration of toner in the toner-developer
mixture.
S49 Temperature/Humidity Sensor Monitors the temperature and humidity inside
the machine.
S50 Toner Bottle End Sensor Located in the toner entrance bank, this
sensor detects toner falling from the toner
supply bottle. When the bottle runs out of
toner, this sensor signals the machine to
switch to the other toner bottle.
S51 Toner Collection Bottle Agitator
Sensor
Detects when the toner collection bottle
agitator motor locks.
S52 Toner Collection Bottle Overflow
Sensor
Detects when the toner collection bottle is
full.
S53 Toner Collection Coil Sensor Detects whether the coil of the toner
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