Davin J012, Руководство по обслуживанию

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No. Component Function
SN
1st Registration
Sensor
Attached to the left side of the carriage. As the carriage moves from
side to side during printing.
The registration sensor performs two important functions for print
control: 1) It detects the leading edge of every sheet, and 2) it
detects the width of the 1st sheet of every print job when the carriage
and sensor pass horizontally over the vertical edge of the 1st sheet
as it feeds.
SN
2nd Registration
Sensor
Located in the center of the printer above the transport belt and
behind the horizontal motor timing belt. This photosensor detects
the leading and trailing edge of each sheet when the printer is
printing at high speed. These readings are used to control job timing
and to detect paper jams.
SN Air Sensors
A pair of vertical pins at the top of each ink tank. This pair of pins
detects changes in the voltage differential on the surface of the ink
inside the print head tank. When these terminals detect air in the
tank, this actuates the air release solenoid and vents air from the
tank through the air release valve. This allows more ink to enter the
tank.
SN
Carriage Position
Sensor
Mounted under the right, front corner of the top cover. Detects the
position of the carriage and print heads above the paper. When
the envelope selector is pulled forward, the feeler leaves the gap
and switches the sensor off. This mechanism is used to detect the up
and down position of the carriage and print heads.
SN
Ink Cartridge Set
Switches
A microswitch for each ink cartridge connected in series and
mounted on the ink cartridge detection plate at the back of the right
front cover that holds the ink cartridges. A metal contact on the back
of the ink cartridge makes contact with the microswitch when the
ink cartridge is inserted. This tells the machine whether the ink
cartridge is inserted or inserted correctly.
SN
Ink Collection Tank
Sensor
A "smart" reflective sensor mounted at the back of the ink collection
tank. Detects when the ink collection tank is almost full and alerts
the operator that the ink collection tank needs to be replaced.
SN Ink Level Sensor
Mounted above the front guide rail. Monitors the positions of the
ink level lever of each ink tank. The vacuum created inside the ink
tanks as ink is consumed gradually draws the base of the spring-
loaded arms in against the sides of the tank. Drawing the base closer
to the side of the tank forces the tip of the arm out. The ink level
Electrical Components
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