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Confidential
9-36
I-12
Banding
Phenomenon
Banding line appears in the horizontal direction as shown in
print sample [12] of Fig.9-1.
Main Causes
(1) This is a transfer failure due to the uneven rotational speed caused by the shock which occurs
when the seam of OPC belt passes over the cleaning blade.
(2) The OPC belt and the transfer belt fail to maintain the regular and proper rotation due to the
impact caused during the retract of the toner cartridge.
Belt Seam
Belt Cartridge PU
Fig. 9-13
Countermeasures
(1) Replace the belt cartridge PU with a new belt cartridge PU.
(2) Replace the toner cartridge PU with a new toner cartridge PU.
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 ...