![Brother MFC-9420CN Скачать руководство пользователя страница 53](http://html.mh-extra.com/html/brother/mfc-9420cn/mfc-9420cn_service-manual_54175053.webp)
Confidential
3 - 1 9
7
Second Transfer (Paper)
Second transfer process means that the toner image on the transfer belt is transferred onto the
transported paper.
(1) Structure of belt cleaning
1) Transfer roller for the second transfer is located as shown in
Fig.3-9
.
2) Transfer roller is normally separated from the transfer belt.
3) Transfer roller is positively biased by the power supply THV.
4) Transfer roller contacts to the transfer belt in the second transfer process.
5) Transported paper passes between the transfer roller and transfer belt.
(2) Process of belt cleaning (Refer to Fig.3-22.)
1) Paper is transported as synchronizing with the transfer belt.
2) Transfer roller operates as synchronizing with the transported paper, and contacts
with the transfer belt through the transported paper.
3) Transported paper passes between the transfer roller and transfer belt. In this instance,
the positive high voltage (THV) is injected to the transfer roller.
4) Negatively charged toner is moved to the positively charged paper.
5) Transported paper with the toner transferred is transported to the paper discharging
process.
Transfer Roller
Paper
THV: Power Supply for Transfer
Roller Bias.
+THV
Transfer Belt
Registration Roller
Transfer Unit
Fig. 3-22
Содержание MFC-9420CN
Страница 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC 9420CN ...
Страница 16: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Страница 22: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Страница 33: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Страница 48: ...Confidential 3 1 4 CBV DBV Fig 3 16 Y M C K Fig 3 17 ...
Страница 69: ...Confidential 3 3 5 Fig 3 35 ...
Страница 73: ...Confidential 3 3 9 3 Interface Circuit Printer side Fig 3 38 ...
Страница 82: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Страница 85: ...Confidential 4 2 Cover page sample End page sample Fig 4 1 ...
Страница 86: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 94: ...Confidential 5 5 5 1 1 AC Cord 1 Disconnect AC cord from the machine Fig 5 1 AC cord Machine ...
Страница 100: ...Confidential 5 11 5 1 5 Side Cover LR 1 Remove the screw and then remove the side cover LR Fig 5 8 Side cover LR Screw ...
Страница 172: ...Confidential 5 83 CIS unit 2 Side cover L Hole Main PCB CIS unit CIS flat cable Document scanner Insert ...
Страница 173: ...Confidential 5 84 FB motor 3 Side cover L Hole Hole Main PCB Document scanner FB motor FB motor harness Insert ...
Страница 175: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 203: ...Confidential CHAPTER 7 CLEANING ...
Страница 205: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Страница 213: ...8 6 Confidential Fig 8 2 Scanning Compensation Data List a b c d e f g h i j k l m n q ...
Страница 224: ...8 17 Confidential Cover page sample End page sample Fig 8 8 ...
Страница 255: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 279: ...Confidential 9 23 2 Image failure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
Страница 280: ...Confidential 9 24 15 a 15 b 16 17 18 19 20 21 22 23 24 25 Fig 9 1 ...
Страница 325: ...App 1 5 Confidential 6 Transfer Unit X X X X X X 7 1 2 3 Location SERIAL NO YEAR MONTH DATE ...
Страница 398: ...B Power Supply PCB 100V 127V Confidential ...
Страница 399: ...B Power Supply PCB 240V Confidential ...
Страница 428: ...SM FAX045 5CS101 6 Printed in Japan ...