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8-44
Confidential
[ 3 ]-4 CBV Tune Up (Code 45-4)
Function
This function is used when it is required to improve the image defect which is caused by the
OPC belt. The adjustment is implemented by changing the OPC belt bias voltage, and it is
changeable by ±4 steps from the standard value “0”.
Always implement the operation when replacing the engine control board.
Operating
Procedure
(1) Select NVM Tune UP with using the
4
or
5
key in the initial stage of the factory mode.
After selecting, press the
6
key.
The “45 NVM TUNE UP /
▲
2 3 4 5 6 7 8 9 A B C D E F G” appears on the LCD.
(2) Select “5” with using the
4
or
5
key and press the
6
key.
(3) Select the optional number with using the
4
or
5
key and press the
6
key.
The adjusted value is written into the NVRAM.
The value can be adjusted by ±4 steps.
(4) Press the
3
key again, and the machine returns to the initial stage of the factory mode.
[ 3 ]-5 FBV Tune Up (Code 45-5)
Function
This function is used when it is required to improve the image defect which is caused by the
transfer drum. The adjustment is implemented by changing the drum cleaner bias voltage,
and it is changeable by ±4 steps from the standard value “0”.
Always implement the operation when replacing the engine control board.
Operating
Procedure
(1) Select NVM Tune UP with using the
4
or
5
key in the initial stage of the factory mode.
After selecting, press the
6
key.
The “45 NVM TUNE UP /
▲
2 3 4 5 6 7 8 9 A B C D E F G” appears on the LCD.
(2) Select “6” with using the
4
or
5
key and press the
6
key.
(3) Select the optional number with using the
4
or
5
key and press the
6
key.
The adjusted value is written into the NVRAM.
The value can be adjusted by ±4 steps.
(4) Press the
3
key again, and the machine returns to the initial stage of the factory mode.
[ 3 ]-6 Factory Use (Code 45-6 to 45-G)
Although it is possible to enter the modes from code 45-6 to 45-G, do not use them because
they are for adjusting in the factory.
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 ...