Phaser 6121MFP Service Manual
2-49
Theory of Operation
Waste Toner Full Sensor
Waste toner near full and full conditions are detected by the waste toner near full
sensor, toner agitating screw, and an internal counter. An agitating auger is used
in the reservoir to provide the maximum waste toner storage capacity. A waste
toner near full condition occurs when light emitted from the sensor LED is
obstructed during its travel through the light guide.
Rotation of the toner agitating screw causes the actuator to move up and down
via the float plate, so that the waste toner near full sensor detects “H” and “L”
signals alternately. When the amount of waste toner in the waste toner reservoir
exceeds a predetermined level, the toner agitating screw no longer rotates. This
stops the signal transitions from the waste toner near full sensor indicating a near
full condition.
A waste toner full condition exists when 200 images are reached after a waste
toner near full condition is detected. When the LED light is unblocked following
Imaging Unit replacement, the waste toner full condition is reset.
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Summary of Contents for PHASER 6121MFP
Page 1: ...Phaser 6121MFP Multi Function Printer Phaser 6121MFP Service Manual...
Page 2: ......
Page 12: ...x Phaser 6121MFP Service Manual Contents...
Page 22: ...xx Phaser 6121MFP Service Manual...
Page 42: ...1 20 Phaser 6121MFP Service Manual General Information...
Page 106: ...2 64 Phaser 6121MFP Service Manual Theory of Operation...
Page 109: ...Phaser 6121MFP Service Manual 3 3 Error Messages and Codes s6121mfp 372...
Page 194: ...3 88 Phaser 6121MFP Service Manual Error Messages and Codes...
Page 306: ...6 44 Phaser 6121MFP Service Manual Adjustments and Calibrations...
Page 405: ...Phaser 6121MFP Service Manual 8 85 Service Parts Disassembly 3 Remove the spring s6121mfp 255...
Page 432: ...8 112 Phaser 6121MFP Service Manual Service Parts Disassembly...
Page 437: ...Phaser 6121MFP Service Manual 9 5 Parts List...
Page 477: ...Phaser 6121MFP Service Manual 9 45 Parts List...
Page 488: ...9 56 Phaser 6121MFP Service Manual Parts List...
Page 489: ...10 Chapter Wiring In this chapter Plug Jack Designations and Locator Diagrams Wiring Diagrams...
Page 530: ...1 6 Phaser 6121MFP Service Manual Index...
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