Brother HL-7050 Series Instrukcja serwisowa - Strona 5
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Również dla Brother HL-7050 Series: Podręcznik szybkiej konfiguracji (35 strony), Podręcznik szybkiej konfiguracji (35 strony), Lista referencyjna części (33 strony), Broszura i specyfikacje (6 strony)
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TABLE OF CONTENTS
1.2.1 Outline ................................................................................................................................ 3-2
1.2.2 Circuit.................................................................................................................................. 3-4
1.3
Engine PCB...................................................................................................................... 3-6
1.4
Power Supply ................................................................................................................... 3-6
1.4.1 Low-voltage power supply .................................................................................................. 3-6
1.4.2 High-voltage power supply ................................................................................................. 3-8
2.
MECHANICS ...........................................................................................................3-9
2.1
Overview of Printing Mechanism...................................................................................... 3-9
2.2
Paper Transfer ............................................................................................................... 3-11
2.2.1 Paper supply ..................................................................................................................... 3-11
2.2.2 Paper registration ............................................................................................................. 3-11
2.2.3 Paper eject........................................................................................................................ 3-12
2.3
Sensors .......................................................................................................................... 3-13
2.3.1 Cover open sensor ........................................................................................................... 3-13
2.3.2 Multi paper tray paper empty sensor ................................................................................ 3-13
2.3.3 Tray paper empty sensor .................................................................................................. 3-14
2.3.4 Face up open sensor / Fuser exit sensor ......................................................................... 3-14
2.3.5 Full stack sensor............................................................................................................... 3-15
2.3.6 Eject sensor ...................................................................................................................... 3-15
2.3.7 Paper size sensor / Tray ID sensor .................................................................................. 3-16
2.3.8 Toner sensors ................................................................................................................... 3-16
2.4
Drum Unit ....................................................................................................................... 3-17
2.4.1 Photosensitive drum ......................................................................................................... 3-17
2.4.2 Primary charging roller...................................................................................................... 3-17
2.4.3 Transfer roller ................................................................................................................... 3-17
2.4.4 Cleaner ............................................................................................................................. 3-17
2.5
Toner cartridge............................................................................................................... 3-17
2.6
Print Process.................................................................................................................. 3-18
2.6.1 Charging ........................................................................................................................... 3-18
2.6.2 Exposure stage................................................................................................................. 3-18
2.6.3 Developing........................................................................................................................ 3-20
2.6.4 Transfer ............................................................................................................................ 3-20
2.6.5 Cleaning............................................................................................................................ 3-21
2.6.6 Fixing stage ...................................................................................................................... 3-21
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY.............................. 4-1
1.
SAFETY PRECAUTIONS ........................................................................................4-1
2.
DISASSEMBLY FLOW ............................................................................................4-6
3.
DISASSEMBLY PROCEDURE................................................................................4-7
3.1
AC Cord ........................................................................................................................... 4-7
3.2
Drum unit assembly ......................................................................................................... 4-7
3.3
Paper Tray ....................................................................................................................... 4-8
3.4
MP Tray.......................................................................................................................... 4-14
3.5
FU Protection Cover....................................................................................................... 4-16
3.6
Side Cover L / R............................................................................................................. 4-17
3.7
Switch Panel................................................................................................................... 4-19
3.8
Open Cover / Top Cover ................................................................................................ 4-21
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