Epson AcuLaser C1900 Service Manual page 90

EPSON AcuLaser C1900/AcuLaser C900
Table 2-3. Various Sensors
Detecting
Unit Detecting method
matter
Reflection photo switch
Presence
detecting method
Reflection photo switch
New product
detecting method
Acquires gas gauge
Remaining
(0 ~ 100%, in 2% steps) and
amount
image counter via controller
Developer
Insertion when Reflection photo switch
Cartridge powering on detecting method
Near end value is not set for
Near end
engine
Counted faster detection
Empty between gas gauge and
image counter
Presence Contact conduction method
New product Fuse method (cuts new fuse)
Insertion when
Contact conduction method
powering on
Photoconductor
Unit
Amount Gas gauge
consumed (0 ~ 100%, in 2% steps)
Near end value is not set for
Near end
engine
Notifies a flag when gas
End
gauge reaches to 0%
Operating Principles
Remark
Detects chipped gear
Waste Toner
Detects chipped gear
Collector
Gas gauge:
Displays dot counter in 2%
steps
• Removal/installation and
replacement are possible
without powering off
• No mechanical defect
• Removal/installation state
is updated when cover is
Transfer Unit
closed
Controller sets near end value
Gas gauge:
When reaches to 0%
Image counter:
When reaches to 6000/2000
*1 MP tray
images
Optional 500-
• Insertion is possible
sheet cassette
without powering off
• No mechanical defect
• Insertion state is updated
when cover is closed
Measures operating time
(rotation time of motor)
Accounts every 30 seconds
Controller sets near end value
Controller performs
processing of forbidding
printing
Mechanism Overview
Table 2-3. Various Sensors (continued)
Detecting
Unit Detecting method
matter
Presence Leaf switch
Near: Photo interrupter
Near full, Full End: Notifies a flag when
soft counter reaches to end
None
(However, when it fails in
Presence initialization of a belt, it is
judged that it is not equipped
with the transfer belt unit.)
Fuse method
New product
(cuts new fuse)
Amount Near end value is not set for
consumed engine
Near end value is not set for
Near end
engine
Near end value is not set for
End
engine
Paper out Transmission photo switch
Unit Connector contact
Presence Transmission photo switch
Near empty Transmission photo switch
Paper out Transmission photo switch
Revision B
Remark
• Soft counter from when
detecting near to when
detecting full
• After detecting, forbids
printing in 200 images
(A service call error
displayed)
Controller sets near end value
Controller sets end value
(Refer to product
specifications)
Remaining amount:
Detects at 50 ± 30 (80 g/m 2
paper) sheets
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