This manual has been issued by Canon Inc. for qualified persons to learn technical theory, insta llati on, ma intenance, and repair
of products. This manual covers all localities where the products are sold. For this reason, there may be information in this
manual that does not apply to your locality.
Corrections
This manual may contain technical inaccuracies or typographical errors due to improvements or changes in products. When
changes occur in applicable products or in the contents of this manual, Canon will release technical information as the need
arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition
of this manual.
The following paragraph does not apply to any countries where such provisions are inconsistent with local law.
Trademarks
The product names and company names used in this manual are the registered trademarks of the individual companies.
Copyright
This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied, reproduced or
translated into another language, in whole or in part, without the written consent of Canon Inc.
Use of this manual should be strictly supervised to avoid disclosure of confidential information.
Symbols Used
This documentation uses the following symbols to indicate special information:
SymbolDescription
Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning.
Indicates an item requiring care to avoid electric shocks.
Indicates an item requiring care to avoid combustion (fire).
Indicates an item prohibiting disassembly to avoid electric shocks or problems.
Indicates an item requiring disconnection of the power plug from the electric outlet.
Indicates an item intended to provide notes assisting the understanding of the topic in question.
Memo
Introduction
REF.
Indicates an item of reference assisting the understanding of the topic in question.
Provides a description of a service mode.
Provides a description of the nature of an error indication.
Introduction
The following rules apply throughout this Service Manual:
1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation.
In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the
direction of the electric signal.
The expression "turn on the power" m eans flipping on the po wer switch, closing the front door, and closing the delivery unit door, which results in
supplying the machine with power.
2. In the digital circuits, '1'is used to indicate that the voltage level of a given signal is "High", while '0' is used to indicate "Low".(The voltage value, however, differs from circuit to circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on when '0'.
In practically all cases, the internal mechanisms of a microprocessor cannot be checked in the fi eld. Therefore, the operations of the microprocessors
used in the machines are not discussed: they are explained in terms of from sensors to the input of the DC controller PCB and from the output of the
DC controller PCB to the loads.
The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes, and major changes will be communicated in the form of Service Information bulletins.
All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be
able to identify and isolate faults in the machine."
1.1.1.4 Control panel............................................................................................................................................................................1- 4
1.1.2.1 Safety of the Host Machine's Laser Mechanism......................................................................................................................1- 5
1.1.2.3 Handling of the Laser Assembly .............................................................................................................................................. 1- 6
1.1.2.4 Safety of the Toner .................................................................................................................................................................. 1- 6
1.1.2.5 Fire Attention............................................................................................................................................................................1- 6
1.1.2.6 Points no Note when Replacing / Disposing the Lithium Battery.............................................................................................1- 6
1.1.4 Function List.......................... ............................................... .................................................................................. .1- 9
1.1.4.1 Scanning Range (ADF)............................................................................................................................................................ 1- 9
1.1.4.2 Scanning Range (copyboard) ................................................................................................................................................ 1- 10
1.1.4.3 Recording Range (Copy) ....................................................................................................................................................... 1- 10
1.1.4.4 Recording Range (Reception) ...............................................................................................................................................1- 11
1.1.4.5 Recording Range (Printer).....................................................................................................................................................1- 11
1.1.4.6 Operation Environment of the Printer Driver.......................................................................................................................... 1- 12
Chapter 2 Basic Operation
2.1 Construction ...............................................................................................................................................2- 1
2.1.1 Function Configuration ............................................................................................................................................2- 1
3.1.1 Specifications / Control / Function List ....................................................................................................................3- 1
3.1.2 Major Components.............................. .. ... ...............................................................................................................3- 1
3.2 Parts Replacement Procedure ...................................................................................................................3- 2
3.2.1.1 Preparation for Removing the Control Panel Assembly........................................................................................................... 3- 2
3.2.1.2 Removing the Control Panel Assembly ................................................................................................................................... 3- 2
3.2.2 Book Motor............................ ..................................................................................................................................3- 2
3.2.2.1 Preparation for Removing the Flat Bed Motor .........................................................................................................................3- 2
3.2.2.2 Removing the Flat Bed Motor .................................................................................................................................................. 3- 2
4.1.2 Original Detection....................................................................................................................................................4- 2
4.2.1 Jam Detection....................................................................................................................................... ...................4- 2
4.3.2.1 Preparation for Removing the ADF Motor................................................................................................................................ 4- 3
4.3.2.2 Removing the ADF Motor ........................................................................................................................................................ 4- 3
5.2 Controlling the Laser Activation Timing......................................................................................................5- 2
5.2.1 Laser ON / OFF Control................................................................................................................................ . ..........5- 2
5.3 Controlling the Intensity of Laser Light.......................................................................................................5- 2
5.3.1 Auto Photoelectric Current Control (APC) ...............................................................................................................5- 2
5.4 Controlling the Laser Scanner Motor..........................................................................................................5- 3
5.4.2 Scanner Motor Speed Control.................................................................................................................................5- 3
5.4.3 Detection of Fault of the Scanner Motor............................................................................................................. ... ..5- 3
5.5 Parts Replacement Procedure ...................................................................................................................5- 4
5.5.1.1 Preparation for Removing the Laser Scanner Unit .................................................................................................................. 5- 4
5.5.1.2 Removing the Laser Scanner Unit...........................................................................................................................................5- 4
6.2 Driving and Controlling the High-Voltage System ......................................................................................6- 2
6.2.1 Generation of Transfer Charging Bias.....................................................................................................................6- 2
6.3 Parts Replacement Procedure ...................................................................................................................6- 3
6.3.1 Transfer Charging Roller................................................................................................................................ ..........6- 3
6.3.1.1 Removing the Transfer Charging Roller ..................................................................................................................................6- 3
7.3.3.1 Pickup Stationary Jam ............................................................................................................................................................ 7- 3
7.3.3.2 Delivery Stationary Jam ..........................................................................................................................................................7- 3
7.3.4 Other Jams.......................................................................................................................... ....................................7- 3
7.3.4.1 Door Open Jam ....................................................................................................................................................................... 7- 3
7.3.4.2 Wrapping Jam ......................................................................................................................................................................... 7- 3
Contents
7.3.4.3 Residual Jam at Startup .......................................................................................................................................................... 7- 4
7.5 Parts Replacement Procedure ...................................................................................................................7- 6
7.5.1 Main Motor............................................................................................................................ ...................................7- 6
7.5.1.1 Preparation for Removing Main Motor.....................................................................................................................................7- 6
7.5.1.2 Removing Main Motor.............................................................................................................................................................. 7- 6
7.5.2.1 Preparation for Removing Separation Pad .............................................................................................................................. 7- 6
8.2 Various Control Mechanisms......................................................................................................................8- 3
8.2.1 Controlling the Temperature of the Fixing Unit........................................................................................................8- 3
8.2.1.1 Fixing Temperature Control .................................................................................................................................................... 8- 3
8.4.2 Fixing Film Unit..................................................................................................................... ...................................8- 5
8.4.2.1 Preparation for Removing Fixing Film Unit .............................................................................................................................. 8- 5
8.4.2.2 Removing Fixing Film Unit.......................................................................................................................................................8- 5
Chapter 9 External and Controls
9.1 Control Panel..............................................................................................................................................9- 1
9.2 Power Supply .............................................................................................................................................9- 1
9.3 Parts Replacement Procedure ...................................................................................................................9- 2
9.3.1 Front Cover................................................................................................................................ ..............................9- 2
9.3.1.1 Removing the Front Cover.......................................................................................................................................................9- 2
9.3.2.1 Preparation for Removing the Rear Cover...............................................................................................................................9- 2
9.3.2.2 Removing the Rear Cover ....................................................................................................................................................... 9- 2
9.3.3 Right Cover................................................................................................................................ ..............................9- 2
9.3.3.1 Removing the Right Cover.......................................................................................................................................................9- 2
9.3.4 Left Cover.............................................................................................................................................. ... ...............9- 2
9.3.4.1 Removing the Left Cover ......................................................................................................................................................... 9- 2
9.3.5.1 Preparation for Removing the Upper Cover.............................................................................................................................9- 3
9.3.5.2 Removing the Upper Cover ..................................................................................................................................................... 9- 3
9.3.6.1 Preparation for Removing the Cartridge Cover........................................................................................................................ 9- 3
9.3.6.2 Removing the Cartridge Cover ................................................................................................................................................ 9- 3
9.3.7 Operation Panel Unit ................................................................................................................. ..............................9- 4
9.3.7.1 Removing the Control Panel Unit............................................................................................................................................. 9- 4
9.3.8.1 Preparation for Removing the SCNT Board.............................................................................................................................9- 4
Contents
9.3.8.2 Removing the SCNT Board ..................................................................................................................................................... 9- 4
9.3.9.1 Preparation for Removing the DCNT Board ............................................................................................................................9- 4
9.3.9.2 Removing the DCNT Board ..................................................................................................................................................... 9- 4
9.3.10.1 Preparation for Removing the NCU Board............................................................................................................................. 9- 6
9.3.10.2 Removing the NCU Board...................................................................................................................................................... 9- 6
9.3.11 Power Supply PCB........................................................................................................................... ......................9- 6
9.3.11.1 Preparation for Removing the Power Supply Board .............................................................................................................. 9- 6
9.3.11.2 Removing the Power Supply Boar.........................................................................................................................................9- 6
9.3.12 High-voitage Power Supply PCB ...........................................................................................................................9- 6
9.3.12.1 Preparation for Removing the High Voltage Power Supply Board......................................................................................... 9- 6
9.3.12.2 Removing the High Voltage Power Supply Board.................................................................................................................. 9- 6
10.3.1 Periodically Service Items....................................................................................................................................10- 1
13.1.1 Setting Service Data ................................................................................................................................ ...........13- 1
13.1.2 How to Activate Service Mode..................... ... ... ............................................................................................... ...13- 1
13.1.3 Service Data Menu............................... ............................................... ..................................... ............................13- 2
13.2 Service Soft Switch Settings (SSSW).....................................................................................................13- 4
13.2.2.1 Function List ........................................................................................................................................................................13- 5
13.2.2.2 Bit 2 and 3 Elaborated.......................................................................................................................................................... 13- 5
13.2.2.3 Bit 5 Elaborated................................ .................................................................................................................................... 13- 5
13.2.3.1 Function List.........................................................................................................................................................................13- 5
13.2.3.2 Bit 8 Elaborated ............................... .................................................................................................................................... 13- 5
13.2.4.1 Function List......................................................................................................................................................................... 13- 5
13.2.4.2 Bit 1 Elaborated............................................... .....................................................................................................................13- 6
13.2.4.3 Bit 2 Elaborated............................................... .....................................................................................................................13- 6
13.2.5.1 Function List......................................................................................................................................................................... 13- 6
13.2.5.2 Bit 3 Elaborated............................................... .....................................................................................................................13- 6
13.2.6.1 Function List......................................................................................................................................................................... 13- 6
13.2.6.2 Bit 4 Elaborated............................................... .....................................................................................................................13- 6
13.2.7.1 Function List......................................................................................................................................................................... 13- 6
13.2.7.2 Bit 7 and 8 Elaborated.......................................................... ................................................................................................13- 7
13.2.8.1 Function List......................................................................................................................................................................... 13- 7
13.2.8.2 Bit 1 to Bit 6 Elaborated .......................................................................................................................................................13- 7
13.2.9.1 Function List......................................................................................................................................................................... 13- 7
13.2.9.2 Bit 7 Elaborated............................................... .....................................................................................................................13- 7
13.2.9.3 Bit 8 Elaborated .............................................. .....................................................................................................................13- 8
13.2.10.1 Function List.......................................................................................................................................................................13- 8
13.2.10.2 Bit 3 and 4 Elaborated........................................................................................................................................................13- 8
13.2.11.1 Function List.......................................................................................................................................................................13- 8
13.2.11.2 Bit 6 and 7 Elaborated........................................................................................................................................................13- 8
13.3.1 Service data list ............................................ ... ............................................... .....................................................13- 9
13.4 Test Mode (TEST) ..................................................................................................................................13- 9
13.4.1.1 Outline of test mode.............................................................................................................................................................13- 9
13.4.1.2 Test mode menu .................................................................................................................................................................. 13- 9
1.1.1 Names of Parts ............................................................................................................................................................................. 1-1
1.1.1.4 Control panel...................................................................................................................................................................................................1-4
1.1.2.3 Handling of the Laser Assembly.....................................................................................................................................................................1-6
1.1.2.4 Safety of the Toner..........................................................................................................................................................................................1-6
1.1.2.5 Fire Attention ..................................................................................................................................................................................................1-6
1.1.2.6 Points no Note when Replacing / Disposing the Lithium Battery ..................................................................................................................1-6
1.1.4 Function List ................................................................................................................................................................................ 1-9
1.1.4.1 Scanning Range (ADF)............................................................. .... ... ... ............................................................................................................1-9
1.1.4.2 Scanning Range (copyboard) ........................................ ... ... ......................................... ... ..............................................................................1-10
1.1.4.3 Recording Range (Copy)...............................................................................................................................................................................1-10
1.1.4.4 Recording Range (Reception) .......................................................................................................................................................................1-11
1.1.4.5 Recording Range (Printer) ............................................................................................................................................................................1-11
1.1.4.6 Operation Environment of the Printer Driver ...............................................................................................................................................1-12
[1] ADF (Automatic Document Feeder): MF4150 only[10] Delivery auxiliary tray
[2] Document guide: MF4150 only[11] Delivery stop
[3] Document pick-up tray: MF4150 only[12] Manual feed tray paper guide
[4] Document delivery tray: MF4150 only[13] Paper trail edge guide
[5] Control panel[14] Paper cover
[6] Delivery tray[15] Manual feed tray
[7] Paper tray[16] Power switch
[8] Reading area (ADF): MF4150 only[17] Copyboard cover: MF4120/MF4122/MF4140
[9] Copyboard
[13][14][15]
1-1
Chapter 1
Rear View (Body)
[1]
[2]
[4][5][6][3]
[1] USB port[4] Phone line terminal: MF4140/MF4150 only
[2] Rear cover[5] Phone teminal: MF4140/MF4150 only
[3] Appliance inlet[6] Handset terminal: MF4140/MF4150 only
Laser radiation can prove to be harmful to the human body. The host machine's laser scanning system is completely sealed by means of a protective housing and
external covers so that its light will not leak outside the host machine as long as the host machine is used normally.
The Center for Devices and Radiological Health (CDRH) of the US Food and Drug Administrator put into forth regulations that relate to laser products on August
2nd, 1976.
These regulations apply to laser products produced on and af ter August 1st, 1976, and prohibit the sale of laser products without certification.
The following labels certify compliance with the CDRH regulations, and must be attached to all laser products that are sold in the US.
CANON
30-2, SHIMOMARUKO, 3-CHOME, OHTAKU, TOKYO,
146, JAPAN.
MANUFACTURED:
THIS PRODUCT CONFORMS WITH DHHS RADIATION
PERFORMANCE STANDARD 21CFR CHAPTER 1
SUBCHAPTER J.
Invisible laser beam is radiated within the laser scanner unit. Laser beam radiation may pose damage to eyes. Be sure not to disassemble the laser scanner unit. The
host machine's laser scanner unit cannot be adjusted in the field. The label [1] shown in the figure below is attached onto the cover of the laser scanner unit.
[1]
F-1-9
1.1.2.4 Safety of the Toner
i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /
Toner in General
Toner is a non-toxic material made up of plastic, iron, and small amounts of dye.
0014-4968
Do not throw toner into fire. Doing so can lead to explosion.
Contact with Toner
1. Toner on the skin or clothes must be removed by washing with water immediately.
2. The use of warm water must be avoided, doing so will cause the toner to turn gel-like and to permanently fuse with the fibers of the clothes.
3. Contact with vinyl must also be avoided, as toner can readily react.
1.1.2.5 Fire Attention
i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /
It is dangerous to throw the parts that include combustible materials such as lithium battery and toner cartridge etc., into fire. Any used battery must always be
disposed according to the appropriate local regulations.
1.1.2.6 Points no Note when Replacing / Disposing the Lithium Battery
Energy save modeYes (manual ON/OFF, auto OFF at a certain period of time, auto ON at
fax reception/print data reception)
Operating environment
(temperature range)
Operating environment
(humidity range)
Operating environment
15 to 30 degC
10 - 80 %
0.61 to 1.01 hpa (0.6 to 1 atm)
(atmospheric pressure)
Power supply rating- 220V - 240V (50/60Hz)
- 120V, 60Hz
Power consumption (maximum) maximum consumption: 670W or less
Power consumptionconsumption at operation mode: approx. 340W or less(reference value)
consumption at standby mode: approx. 8.5W (reference value)
consumption at sleep mode: approx. 3W (reference value)
Ozonemax: 0.05 ppm or less, average: 0.02 ppm or less
DimensionsMF4150:
390 (W) x 432 (D) x 370 (H) mm (document pickup tray attached)
MF4120/MF4122/MF4140:
390 (W) x 432 (D) x 303 (H) mm
WeightMF4150:
13.4 kg approx. (toner cartridge included)
MF4120/MF4122/MF4140:
12.4 kg approx. (toner cartridge included)
1.1.3.2 ADF Specifications
i-SENSYS MF4150 /
Original orientationFace-up method
Original positioncenter reference
Original processing mode1-sided to 1-sided copy, 1-sided to 2-sided copy
Original readingstream reading method
Stack35 sheets (80 g/m2 or less)
9.6Kbps, 7.2Kbps, 4.8Kbps, 2.4Kbps
With automatic fallback function
V.34: -10 to -43 dBm
Fine: 8 dots / mm x 7.7 lines / mm
Super fine/ 8 dots / mm x 15.4 lines / mm
Automatic reduction: 75 to 100%
ID: 2 digits (default is 25)
Speed dial: 100
Group dial: Maximum 106
Delayed transmissionNo.
Broadcast transmissionNumber of Destination: Maximum 123
Dual accessReservation Capacity: Maximum 64 jobs
Memory receptionApproximately 256 sheets (Canon FAX standard chart No.1)
Image data backupNo.
1.1.4 Function List
1.1.4.1 Scanning Range (ADF)
i-SENSYS MF4150
(one-touch / speed dial: 107, ten key: 16)
[1]
[4][2]
[3]
[7]
[8]
0014-4816
[5]
[6]
[9]
F-1-10
[1] leading edge of original[6] trailing edge margin
[2] left margin[7] non-scanning area
[3] effective scanning width[8] scanning range
[4] right marginmargin[9] trailing edge of original
[5] leading edge margin
1-9
Chapter 1
itemA4LetterLegal
effective scanning width206 +2.0/-2.0 mm212 +2.0/-2.0 mm212 +2.0/-2.0 mm
left margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
right margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
leading edge margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
trailing edge margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
[1] leading edge of document[6] trailing edge margin
[2] left margin[7] non-scanning area
[3] effective scanning width[8] scanning range
[4] right margin[9] trailing edge of document
[5] trailing edge margin
itemA4LetterLegal
effective recording width204 +1.0/-2.0 mm210 +2.0/-2.0 mm210 +2.0/-2.0 mm
effective recording left
margin
right margin3.0 +2.0/-2.0 mm3.0 +2.0/-2.0 mm3.0 +2.0/-2.0 mm
leading edge margin4.0 +2.0/-2.0 mm4.0 +2.0/-2.0 mm4.0 +2.0/-2.0 mm
trailing edge margin5.0 +2.0/-2.0 mm5.0 +2.0/-2.0 mm5.0 +2.0/-2.0 mm
1.1.4.4 Recording Range (Reception)
i-SENSYS MF4150 / i-SENSYS MF4140
Chapter 1
T-1-7
3.0 +2.0/-2.0 mm3.0 +2.0/-2.0 mm3.0 +2.0/-2.0 mm
0014-4819
[1]
[4][2]
[3]
[1] leading edge of document[6] trailing edge margin
[2]left margin[7] non-scanning area
[3] effective scanning width[8] scanning range
[4] right margin[9]trailing edge of document
[5] leading edge margin
itemA4LetterLegal
effective recording width206 +1.0/-2.0 mm212 +2.0/-2.0 mm212 +2.0/-2.0 mm
left margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
right margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
leading edge margin2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm2.0 +2.0/-2.0 mm
trailing edge margin6.0 +2.0/-2.0 mm6.0 +2.0/-2.0 mm6.0 +2.0/-2.0 mm
[1] leading edge of document[6] trailing edge margin
[2] left margin[7] non-scanning area
[3] effective scanning width[8] scanning range
[4] right margin[9] trailing edge of document
[5] leading edge margin
T-1-9
itemA4LetterLegal
left margin5.0 +2.0/-2.0 mm5.0 +2.0/-2.0 mm5.0 +2.0/-2.0 mm
right margin5.0 +2.0/-2.0 mm5.0 +2.0/-2.0 mm5.0 +2.0/-2.0 mm
leading edge margin6.0 +2.0/-2.0 mm6.0 +2.0/-2.0 mm6.0 +2.0/-2.0 mm
trailing edge margin6.0 +2.0/-2.0 mm6.0 +2.0/-2.0 mm6.0 +2.0/-2.0 mm
1.1.4.6 Operation Environment of the Printer Driver
Windows 98/98SE, Windows Me, Windows 2000, Windows XP
Computer
Computer in which Windows 98/98SE, Windows Me, Windows 2000, or Windows XP runs properly.
Hardware environment
- IBM PC or IBM compatible PC
- CD-ROM drive or network environment accessible to CD-ROM
- PC equipped with USB port and installed with USB class driver
OSCPURAM
Windows 98/98SEIntel Pentium 90 MHz or more128 MB or more
Windows MeIntel Pentium 150 MHz or more128 MB or more
Windows 2000Intel Pentium 133 MHz or more128 MB or more
Windows XPIntel Pentium ii/ Celeron 300 MHz or more 128 MB or more
* Log in as a user account to which the administrator's right is authorized.
T-1-10
0014-6880
1-12
Chapter 2 Basic Operation
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