3-41
Confidential
3.2.3 Sensors and Actuators
This machine uses the following sensors and thermistors.
*1
For models with ADF
*2
For models with handset
• The document front sensor detects whether there is a document in the ADF.
• The document rear sensor detects the leading and trailing edges of document pages, indicating
to the control circuitry the point at which to start reading and when page scanning is complete.
• The scanner cover sensor detects whether the scanner cover (scanner unit) is properly closed.
• The ink cartridge cover sensor detects whether the ink cartridge cover is properly closed.
• The registration sensor detects the leading and trailing edges of paper for use in determining
print start and end timings and detecting paper jams.
• The paper width (media) sensor checks whether recording paper is A4 or greater in width at
the start of recording of FAX data received. With this sensor signal, the controller prevents
the print head from printing on the outside of paper in borderless printing. It also protects the
platen from no-paper printing when a paper jam occurs, preventing stains on the platen and
the back side of paper.
• The head thermistor detects the temperature inside the head/carriage unit. According to the
sensor information, the controller adjusts the head driver to compensate for changes in ink
viscosity.
Sensor Name
Sensor Type
Location
Document front sensor
*1
Photosensor
On the document front sensor PCB in
the ADF unit
*1
Document rear sensor
*1
Photosensor
On the document rear sensor PCB in
the ADF unit
*1
Scanner cover sensor
Carbon switch
On the control panel PCB
Ink cartridge cover sensor
Carbon switch
Registration sensor
Photosensor
On the registration sensor PCB
Paper width sensor (media sensor)
Photosensor
On the carriage PCB
Head thermistor
Thermistor
CR encoder sensor
Photosensor
PF encoder sensor
Photosensor
On the PF encoder PCB
ASF encoder sensor
Photosensor
In the ASF motor unit
Purge cam switch
Mechanical switch
On the maintenance unit
Cap lift cam switch
Mechanical switch
Casing internal temperature thermistor
Thermistor
On the ink empty sensor PCB inside
the ink refill assembly
Ink empty sensors (four)
Photosensor
Ink cartridge detection sensors (four)
Photosensor
On the ink cartridge detection sensor
PCB on the ink refill assembly
Hook switch
*2
Photosensor
On the hook switch PCB
*2
in the
lower cover
Summary of Contents for MFC-J220
Page 8: ...vi Confidential SAFETY PRECAUTIONS Symbols used in the documentation ...
Page 9: ...vii Confidential ...
Page 10: ...viii Confidential ...
Page 11: ...ix Confidential ...
Page 12: ...x Confidential ...
Page 13: ...xi Confidential ...
Page 14: ...xii Confidential ...
Page 15: ...xiii Confidential ...
Page 16: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
Page 20: ...1 3 Confidential 1 2 CONTROL PANEL DCP375CW ...
Page 21: ...1 4 Confidential ...
Page 22: ...1 5 Confidential DCP395CN ...
Page 23: ...1 6 Confidential ...
Page 24: ...1 7 Confidential MFC255CW 295CN ...
Page 25: ...1 8 Confidential ...
Page 26: ...1 9 Confidential MFC495CW ...
Page 27: ...1 10 Confidential ...
Page 28: ...1 11 Confidential MFC795CW ...
Page 29: ...1 12 Confidential ...
Page 30: ...1 13 Confidential DCPJ125 J315W J515W J715W 8 7 6 5 1 2 4 3 ...
Page 31: ...1 14 Confidential ...
Page 32: ...1 15 Confidential MFCJ220 J265W J270W J410 J410W J415W J615W J630W 6 7 8 5 2 4 3 1 ...
Page 33: ...1 16 Confidential Mono Start Colour Start ...
Page 34: ...1 17 Confidential DCPJ140W 6 7 8 5 2 4 3 1 ...
Page 37: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 39: ...Confidential 2 12 PAPER 2 42 2 12 1 Paper Specifications 2 42 2 12 2 Printable Area 2 44 ...
Page 84: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 130: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Page 135: ...4 3 Confidential For MFC only Replace Ink ...
Page 187: ...Confidential CHAPTER 5 HANDLING DATA HELD IN THE MACHINE PRIOR TO REPAIR ...
Page 191: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 193: ...Confidential 6 2 LUBRICATION 6 103 ...
Page 302: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 309: ...7 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 318: ...7 14 Confidential Head Positioning Test Pattern ...
Page 325: ...7 21 Confidential Vertical Alignment Check Pattern A 1 2 ...
Page 326: ...7 22 Confidential Vertical Alignment Check Pattern A 2 2 ...
Page 327: ...7 23 Confidential Vertical Alignment Check Pattern B ...
Page 331: ...7 27 Confidential Left Right and Bottom Margins Check Pattern ...
Page 342: ...7 38 Confidential ADF Copy Chart A B C D ...
Page 345: ...Confidential CHAPTER 8 CLEANING ...
Page 349: ...8 3 Confidential Maintenance unit Head wiper Head cap unit cleaning_duplex Rubycel stick ...
Page 350: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Page 359: ...9 7 Confidential Scanning Compensation Data List Models except DCPJ140W DCPJ140W ...
Page 362: ...9 10 Confidential Test Pattern ...
Page 367: ...9 15 Confidential Configuration List ...
Page 372: ...9 20 Confidential MFC255CW 295CN MFC495CW MFC795CW DCPJ125 J315W J515W J715W Key Entry Order ...
Page 373: ...9 21 Confidential DCPJ140W MFCJ220 J265W J270W J410 J410W J415W J615W J630W Key Entry Order ...
Page 397: ...9 45 Confidential Vertical Alignment Check Pattern A 1 2 ...
Page 398: ...9 46 Confidential Vertical Alignment Check Pattern A 2 2 ...
Page 399: ...9 47 Confidential Vertical Alignment Check Pattern B ...
Page 403: ...9 51 Confidential Left Right and Bottom Margins Check Pattern ...
Page 439: ...App 2 3 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 521: ...App 5 3 Confidential DCPJ515W ...
Page 522: ...App 5 4 Confidential DCPJ715W MFCJ615W J630W ...
Page 523: ...App 5 5 Confidential DCPJ125 J315W MFCJ220 J265W J270W J410 J410W J415W ...
Page 524: ...App 5 6 Confidential DCPJ140W ...
Page 534: ...App 6 9 Confidential B Power supply PCB 200 V series ...