Confidential
CHAPTER 2
THEORY OF OPERATION
This chapter gives an overview of the printing mechanisms as well as the sensors, actuators and
control electronics. It aids in understanding the basic principles of operation as well as locating defects
for troubleshooting.
CONTENTS
1. GENERAL BLOCK DIAGRAM ..................................................................2-1
2. ELECTRONICS GENERAL BLOCK DIAGRAM........................................2-2
3.1 Cross-section Drawing ............................................................................................... 2-3
3.2 Paper Feeding ............................................................................................................ 2-4
3.2.1 Plate-up function of the paper tray .................................................................... 2-5
3.2.2 Paper supply...................................................................................................... 2-6
3.2.3 Paper registration .............................................................................................. 2-7
3.2.4 Paper eject ........................................................................................................ 2-8
3.2.5 Paper supply from manual feed slot and paper eject from back........................ 2-9
3.3.1 Type of toner cartridge..................................................................................... 2-10
3.3.2 Life of toner cartridge....................................................................................... 2-10
3.3.3 Method of detecting toner life .......................................................................... 2-11
3.3.4 Relationship between toner amount and life of toner cartridge in number of
3.3.5 New toner detection......................................................................................... 2-13
3.3.6 Method of counting the number of toner replacements ................................... 2-15
3.4 Principle of Color Overlapping.................................................................................. 2-16
3.5 Basic Printing Principle............................................................................................. 2-17
3.5.1 Charging .......................................................................................................... 2-18
3.5.2 Exposure ......................................................................................................... 2-19
3.5.3 Development ................................................................................................... 2-20
3.5.4 Transfer ........................................................................................................... 2-21
3.5.5 Fusing.............................................................................................................. 2-22
3.5.6 Toner cleaning ................................................................................................. 2-23
3.6 Location of Sensors.................................................................................................. 2-24
3.7 Adjustment of Color Registration .............................................................................. 2-28
Содержание HL-3040CN
Страница 10: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Страница 33: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Страница 61: ...2 27 Confidential Fig 2 27 Fuser center thermistor Fuser side thermistor Fuser unit Front ...
Страница 63: ...Confidential CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 149: ...Confidential CHAPTER 4 PERIODICAL MAINTENANCE ...
Страница 171: ...Confidential CHAPTER 5 DISASSEMBLY AND ASSEMBLY ...
Страница 217: ...5 43 Confidential 8 8 Side Cover L ASSY Access Cover 1 Open the Top cover unit Fig 5 26 Top cover unit ...
Страница 336: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 342: ...6 5 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...
Страница 352: ...Confidential CHAPTER 7 SERVICE FUNCTIONS ...
Страница 375: ...7 21 Confidential Color registration adjustment chart Fig 7 7 ...
Страница 379: ...7 25 Confidential LED test pattern M68_L Fig 7 9 ...
Страница 381: ...7 27 Confidential Fig 7 10 ...
Страница 383: ...7 29 Confidential Color test pattern Fig 7 11 MCYK Y C M K YCMK_ _A ...
Страница 408: ...Confidential CHAPTER 8 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Страница 410: ...8 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram SYS HITEK SPH 8N35 1 3 ...
Страница 411: ...8 2 Confidential High voltage Power Supply PCB Circuit Diagram SYS HITEK SPH 8N35 2 3 ...
Страница 412: ...8 3 Confidential High voltage Power Supply PCB Circuit Diagram SYS HITEK SPH 8N35 3 3 ...
Страница 413: ...8 4 Confidential High voltage Power Supply PCB Circuit Diagram MURATA MPH3316 1 3 ...
Страница 414: ...8 5 Confidential High voltage Power Supply PCB Circuit Diagram MURATA MPH3316 2 3 ...
Страница 415: ...8 6 Confidential High voltage Power Supply PCB Circuit Diagram MURATA MPH3316 3 3 ...
Страница 416: ...8 7 Confidential Low voltage Power Supply PCB Circuit Diagram 100V ...
Страница 417: ...8 8 Confidential Low voltage Power Supply PCB Circuit Diagram 200V ...
Страница 418: ...8 9 Confidential 2 WIRING DIAGRAM Wiring Diagram 1 2 ...
Страница 419: ...8 10 Confidential Wiring Diagram 2 2 ...
Страница 429: ...Confidential APPENDIX 3 SERIAL NUMBERING SYSTEM ...
Страница 431: ...App 3 2 Confidential Serial number of the LED ASSY Print position Fig App 3 4 Serial number ...
Страница 432: ...Confidential APPENDIX 4 SCREW CATALOGUE ...
Страница 434: ...Confidential APPENDIX 5 REFERENCES ...
Страница 436: ...Confidential APPENDIX 6 GLOSSARY ...