Brother HL-4200CN, Руководство по обслуживанию

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7.7 Toner Control
Whether the toner bottle is installed is detected by the switch toner cartridge ASSY, and
the presence of toner in the toner bottle is detected by the sensor no toner . These
switches and sensors are provided for respective colors, and detection is made for each
color.
7.7.1 Sensor no toner
The sensor no toner is provided for each color.
The sensor no toner is attached to the holder toner cartridge ASSY, and it detects the
presence of toner dispensed by the toner motor from the toner bottle into the holder
toner cartridge ASSY.
Also, the sensor no toner could make a wrong detection if the toner sticks to the sensor
surface. To prevent this, the film attached in the vicinity of the auger in the holder toner
cartridge ASSY cleans the sensor surface when the toner is dispensed. This film rotates
together with the auger at the toner dispensation to scrape the toner off the sensor no
toner surface. However, the sensor may detect the toner even if the toner is not present
or may not detect the toner even if the toner is present, depending on the film position
when the toner motor stopped. This is avoided by the printer internal control.
7.7.2 Toner presence control
The control is outlined below.
1) Check
timing
•
When the power is turned on, or the front cover is opened and closed
•
Printing
2) Output of "Toner Empty Warning"
Output "Toner Empty Warning" based on the counter on the toner cartridge.
3) Output of "Toner Empty Error"
Output "Toner Empty Error" when the sensor no toner properly detects toner empty.
4) Reset of "Toner Empty Warning"/"Toner Empty Error"
When a new toner bottle is installed ("Toner Empty Error" not being generated), the
machine executes toner dispense for 1.7 seconds to detect toner. If sensor no
toner detects toner full on checking "Toner Full"/"Uncontrolled Execution", "Toner
Empty Warning/Toner Empty Error" will be disabled.
However, the unit inside still recognizes "Toner Empty" at this stage. The unit
recognizes "Toner Full" when the sensor no toner has detected "Toner Full" more
than three times consecutively by executing toner dispense.
5) Outputting "Toner Tape not Removed Error"
When the new toner bottle is installed ("Toner Empty Error" not being generated),
the machine executes toner dispense for 1.7 seconds to detect toner. If toner full is
not detected, toner dispense will be executed for 1.7 sec again 5 seconds later. If
toner full is not detected after executing toner dispense three times, and if toner
bottle dispense time shows 0, "Tape not Removed Error" will be output.