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Canon i-SENSYS MF4120, Service Manual

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Canon i-SENSYS MF4120 Service Manual Download Page 55

Contents

Contents

5.1 Overview/Configuration ................................................................................................................................................5-1

5.1.1 Overview...................................................................................................................................................................................... 5-1

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

5.4.1 Overview...................................................................................................................................................................................... 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 Laser/Scanner Unit....................................................................................................................................................................... 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

Summary of Contents for i-SENSYS MF4120

Page 1: ...Aug 21 2006 Service Manual MF4100 Series ...

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Page 3: ... 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 ma...

Page 4: ...quiring 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 Indicates an item of reference assisting the understanding of the topic in question Provides a descri...

Page 5: ...sed to indicate Low The voltage value how ever 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 field Therefore the operations of the microprocessors used in the machines are not discussed they are explained in terms of from sensors to the i...

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Page 7: ...rd 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 2 2 Basic Sequence 2 1 2 2 1 Basic Operation Sequence 2 1 Chapter 3 Original Exposure System 3 1 Basic Constraction 3 1 3 1 1 Specifications Cont...

Page 8: ...nt Procedure 5 4 5 5 1 Laser Scanner Unit 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 Chapter 6 Image Formation 6 1 Overview Configuration 6 1 6 1 1 Configuration 6 1 6 1 2 Print Process 6 1 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 ...

Page 9: ...8 4 1 2 Removing Fixing Assembly 8 5 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 1 1 Outline 9 1 9 2 Power Supply 9 1 9 2 1 Protection Function 9 1 9 2 1 1 Protecting Function 9 1 9 3 Parts Replacement Procedure 9 2 9 3 1 Front Cover 9 2 9 3 1 1 Removing the Front Cove...

Page 10: ...ical Service 10 1 10 3 1 Periodically Service Items 10 1 10 4 Cleaning 10 1 10 4 1 Cleaning Items 10 1 10 4 2 Cleaning Method External Covers 10 1 10 4 3 Cleaning Method Reader Unit 10 2 Chapter 11 Measurement and Adjustments 11 1 Basic Adjustments 11 1 11 1 1 Adjustment Items 11 1 11 1 2 Paper Margin Adjustment 11 1 11 1 3 Reading Adjustment 11 1 11 1 4 Print Adjustment 11 2 Chapter 12 Error Code...

Page 11: ...W SW39 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 SSSW SW51 13 8 13 2 10 1 Function List 13 8 13 2 10 2 Bit 3 and 4 Elaborated 13 8 13 2 11 SSSW SW54 13 8 13 2 11 1 Function List 13 8 13 2 11 2 Bit 6 and 7 Elaborated 13 8 13 3 Report Output REPORT 13 9 13 3 1 Service data list 13 9 13 4 Test Mode TEST 13 9 13 4 1 Overview 13 9 13 4 1 1 Ou...

Page 12: ...Contents ...

Page 13: ...Chapter 1 Introduction ...

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Page 15: ...bly 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 3 Product Specifications 1 7 1 1 3 1 Host Machine Specifications 1 7 1 1 3 2 ADF Specifications 1 8 1 1 3 3 FAX Specifications 1 8 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...

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Page 17: ...very 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 1 2 3 4 7 6 5 8 9 10 11 ...

Page 18: ...NSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 F 1 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 1 pressure roller 8 vertical path roller 1 2 4 5 6 3 1 2 3 4 5 6 7 8 9 11 12 10 13 14 ...

Page 19: ...er 2 pickup roller 3 separation pad 4 delivery roller 2 copyboard glass scanning glass 9 separation pad 3 delivery roller 10 cartridge 4 fixing film unit 11 duplexing feeding roller 5 laser scanner unit 12 transfer charging roller 6 primary charging roller 13 photosensitive drum 7 developing cylinder 14 fixing unit 1 2 3 4 ...

Page 20: ... indicator 4 FAX key 16 Start key 5 SCAN key 17 Numeric key 6 Additional Functions key 18 Tone key 7 2 Sided key 19 Clear key 8 Enlarge Reduce key 20 key 9 Density key 21 OK key 10 Image Quality key 22 key 11 Collate 2 on 1 key 23 Toner Gauge key 12 Energy Saver key 1 Hook key 4 Address Book key 2 Redial Pause key 5 R key 3 Coded Dial key 6 One Touch Speed Dial keys 1 2 3 4 5 6 7 8 9 10 11 12 13 1...

Page 21: ...cts on August 2nd 1976 These regulations apply to laser products produced on and after 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 F 1 8 1 System Monitor key 12 Stop Reset key 2 View Settings key 13 Error indicator 3 COPY key 14 Proc...

Page 22: ...ad 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 0014 4970 i SENSYS MF4150 i SENSYS MF4140 i SENSYS...

Page 23: ...ner save mode Yes Original type sheet book three dimensional objects up to 2kg Maximum original size fixed type 216mm x 297mm ADF 216mm x 356mm Reproduction ratio 1 1 1 0 1 2 00 1 1 41 1 0 70 1 0 50 zoom 0 50 to 2 00 minimum unit 1 Reading resolution 600 x 600 dpi Printing resolution 600 x 600 dpi Warm up time 9 0 sec or less First print time 9 6 sec or less A4 LTR Print speed 1 side approx 20 ppm...

Page 24: ...aximum consumption 670W or less Power consumption consumption 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 Ozone max 0 05 ppm or less average 0 02 ppm or less Dimensions MF4150 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 Weigh...

Page 25: ...IC CONEXANT DFX336 Scanning line density Standard 8 dots mm x 3 85 lines mm Fine 8 dots mm x 7 7 lines mm Super fine 8 dots mm x 15 4 lines mm Half tone 256 gradation sequence Printing resolution 600 dpi x 600 dpi Reduction for reception Fixed reduction No Automatic reduction 75 to 100 FAX TEL switching Yes Answering machine connection Yes Remote reception ID entry method ID 2 digits default is 25...

Page 26: ...mm leading edge margin 2 0 2 0 2 0 mm 2 0 2 0 2 0 mm 2 0 2 0 2 0 mm trailing edge margin 2 0 2 0 2 0 mm 2 0 2 0 2 0 mm 2 0 2 0 2 0 mm 1 leading edge of document 4 right margin 2 left margin 5 scanning range 3 effective scanning width 6 trailing edge of document item A4 Letter effective scanning width 206 mm 212 mm left margin 2 0 2 0 2 0 mm 2 0 2 0 2 0 mm right margin 2 0 2 0 2 0 mm 2 0 2 0 2 0 mm...

Page 27: ... mm 4 0 2 0 2 0 mm 4 0 2 0 2 0 mm trailing edge margin 5 0 2 0 2 0 mm 5 0 2 0 2 0 mm 5 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 item A4 Letter Legal effective recording width 206 1 0 2 0 mm 212 2 0 2 0 mm 212 2 0 2 0 mm left margin 2 0...

Page 28: ...ight is authorized 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 item A4 Letter Legal left margin 5 0 2 0 2 0 mm 5 0 2 0 2 0 mm 5 0 2 0 2 0 mm right margin 5 0 2 0 2 0 mm 5 0 2 0 2 0 mm 5 0 2 0 2 0 mm leading edge margin 6 0 2 0 2 0 mm 6 0 2 0 2 0 mm 6 ...

Page 29: ...Chapter 2 Basic Operation ...

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Page 31: ...Contents Contents 2 1 Construction 2 1 2 1 1 Function Configuration 2 1 2 2 Basic Sequence 2 1 2 2 1 Basic Operation Sequence 2 1 ...

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Page 33: ...cartridge is detected during this interval STBY standby Interval between the end of WAIT or LSTR and input of print command from SCNT board or interval between the end of LSTR and turnoff of power supply To make the host machine ready for printing INTR initial rotation Interval between the input of print command from SCNT and turnon of the pickup solenoid To stabilize the photosensitive drum as a ...

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Page 35: ...Chapter 3 Original Exposure System ...

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Page 37: ...ement Procedure 3 2 3 2 1 Scanner Unit 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 3 2 3 Contact Sensor 3 3 3 2 3 1 Removing the Contact Sensor 3 3 ...

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Page 39: ...originals by ADF instead of shifting the contact sensor F 3 1 item function method document exposure LED document scan Book mode scan by the shift of the contact Book mode scan by the shift of the contact sensor CS ADF document stream reading by fixed contact sensor CS scanning resolution 600 dpi horizontal scanner X 600 dpi vertical scanner number of gradations 256 gradations magnification 50 to ...

Page 40: ...i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the front cover 2 Remove the right cover 3 Remove the left cover 4 Remove the rear cover 5 Remove the control panel assembly 3 2 2 2 Removing the Flat Bed Motor 0014 7673 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Open the copyboard glass cover 1 and remove it upward Pull out the hinge 2 on the left side while keeping it tilted toward...

Page 41: ... toward the rear side Be sure to put the copyboard glass cover that you detached onto the mount etc so as not to damage the cable 2 Remove the 4 screws 3 and detach the copyboard glass cover 4 3 Remove the copyboard glass cover 5 Be sure not to get the bottom surface of the scanner glass soiled F 3 11 4 Remove the 2 spacers 1 5 Remove the contact sensor unit 2 upward F 3 12 Points to Note at Attac...

Page 42: ...Chapter 3 3 4 F 3 15 ...

Page 43: ...Chapter 4 Original Feeding System ...

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Page 45: ... 2 4 2 Detection Jams 4 2 4 2 1 Jam Detection 4 2 4 3 ADF 4 3 4 3 1 Pick up Roller 4 3 4 3 1 1 Removing the Pickup Roller 4 3 4 3 2 ADF Motor 4 3 4 3 2 1 Preparation for Removing the ADF Motor 4 3 4 3 2 2 Removing the ADF Motor 4 3 4 3 3 Separation Pad 4 4 4 3 3 1 Removing the Separation Pad 4 4 ...

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Page 47: ...h in of original which descends ascends in conjunction with the gear 2 on the end of the pickup roller shaft F 4 2 When the originals are moving through the machine By the CW drive of the DF motor M3 which is transmitted to the pickup roller via the gear spring clutch and results in positive rotation of the pickup roller original pickup is performed At this point the gear on the pickup roller shaf...

Page 48: ...nism The original length that can be scanned with this equipment is less than 400 mm Passing of the original longer than this results in jam stop The original length is calculated by the time it takes from detection of the leading edge of the original to detection of the trailing edge of the original MEMO There is no function to detect the original size original width length in this equipment 4 2 ...

Page 49: ...2 bushings 1 5 Remove the 1 E ring 2 to remove the pick up roller shaft 3 F 4 8 6 Remove the 1 E ring 1 to remove the pickup roller 2 Do not touch the roller with bare hands F 4 9 4 3 2 ADF Motor 4 3 2 1 Preparation for Removing the ADF Motor 0014 5955 i SENSYS MF4150 i SENSYS MF4140 1 Remove the front cover 2 Remove the right cover 3 Remove the left cover 4 Remove the rear cover 5 Remove the cont...

Page 50: ... 13 5 Unhook the 2 claws 3 to remove the ADF motor cover 4 F 4 14 6 Remove the ADF motor 3 2 screws 1 1 cable tube 2 F 4 15 4 3 3 Separation Pad 4 3 3 1 Removing the Separation Pad 0014 5943 i SENSYS MF4150 i SENSYS MF4140 1 Open the ADF cover 1 F 4 16 2 Remove the separation pad 1 in the direction of the arrow F 4 17 Points to Note when Attaching Insert the spring 1 of the separation pad into the...

Page 51: ...Chapter 4 4 5 F 4 18 ...

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Page 53: ...Chapter 5 Laser Exposure ...

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Page 55: ...aser Light 5 2 5 3 1 Auto Photoelectric Current Control APC 5 2 5 4 Controlling the Laser Scanner Motor 5 3 5 4 1 Overview 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 Laser Scanner Unit 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 ...

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Page 57: ...e pho tosensitive drum MEMO E100ÅF When the error related to the following laser exposure occurs error code E100 is lit BD fault If BDI signal cannot be detected in 0 1 sec after forced acceleration of the scanner motor or the specified value of BDI signal cycle cannot be detected for 2 sec or more after the scanner motor reached the specified rotation it should be judged as BD fault Scanner fault...

Page 58: ...edure The following is its procedure 1ÅjWhen the laser control signal CNT0 CNT1 turned into LD APC mode the laser driver emits LD forcedly 2 After being detected with the photodiode PD the LD emission level as current is converted to the one as voltage and compared with the reference voltage the voltage equivalent to the target laser level 3 The laser driver controls the laser current until it rea...

Page 59: ...0014 4991 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 CPU of the DCNT board monitors the frequency comparator to judge if the scanner motor rotates at the specified rotation frequency When the following statuses occur CPU judges that there is a fault or error and stops the engine At the same time it notices the details of the error to the SCNT board 1 Scanner fault If BDI signal cannot be dete...

Page 60: ...3 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the front cover 2 Remove the right cover 3 Remove the left cover 4 Remove the DCNT board 5 5 1 2 Removing the Laser Scanner Unit 0014 5964 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the shutter arm 1 2 Remove the 4 screws 2 to remove the laser scanner unit 3 F 5 4 ...

Page 61: ...Chapter 6 Image Formation ...

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Page 63: ...iguration 6 1 6 1 2 Print Process 6 1 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 ...

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Page 65: ...tosensitive drum whose potential is made even by the primary charging roller to be ready for the formation of the next latent image F 6 1 6 1 2 Print Process 0014 5001 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 The print process shows the basic operation process for image formation by the printer The print process of this machine has the main 5 blocks and 7 steps The toner image is formed on ...

Page 66: ...e bias is applied to the transfer charging roller at cleaning the transfer charging roller The transfer charging bias generation circuit applies these transfer charging biases to the transfer charging roller according to each print sequence The following are the biases for print sequences Cleaning bias This is the bias for transferring the toner on the photosensitive drum to the paper at the time ...

Page 67: ... the control panel assembly 1 2 Open the cartridge cover 2 F 6 3 3 Unhook the 2 claws 1 to remove the transfer charging roller 2 with the transfer guide 3 in the direction of the arrow F 6 4 Do not touch the roller with bare hands Points to Note when Attaching Insert the spring 1 into the boss 2 of the bushing F 6 5 4 Remove the transfer charging roller 2 from the transfer guide 1 F 6 6 ...

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Page 69: ...Chapter 7 Pickup and Feed System ...

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Page 71: ...tationary 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 7 3 4 3 Residual Jam at Startup 7 4 7 4 Duplex Unit 7 5 7 4 1 Overview 7 5 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 Separation Pad 7 6 7 5 2 1 Preparation for Removing Sepa...

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Page 73: ...paper the following 4 photointerrupters are allocated the leading edge paper width sensor PS801 PS802 delivery sensor PS803 and delivery paper width sensor PS804 and they detect either the arrival or passage of paper If a paper does not arrive or pass each sensor except the fixing paper width sensor within the predetermined time CPU on the DCNT board judges as a jam and notify the occurrence of ja...

Page 74: ...tion 3 The pickup cam rotates along with the rotation of the pickup roller and by following the shape of the pickup cam the lifting plate is pushed up with the force of the spring A paper pushed up with the lifting plate is picked up by the rotation of the pickup roller and fed to inside of the machine 1 After a certain period of time that the leading edge sensor PS801 detects the leading edge of ...

Page 75: ... paper after passing about 1 65 sec from the detection of the leading edge of paper with the leading edge sensor PS801 the DCNT board judges as the delivery delay jam 7 3 3 Stationary Jams 7 3 3 1 Pickup Stationary Jam 0014 5505 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 If the trailing edge of paper cannot be detected after passing about 5 4 sec since the leading edge sensor PS801 detects th...

Page 76: ...er the leading edge sensor PS801 or the paper width sensor PS802 detects a paper at the start of initial rotation CPU judges as the residual jam at startup When there is paper in inside the machine the leading edge sensor flag is pushed up with paper and paper having is judged F 7 3 Paper PS802 PS801 PS802 PS801 ...

Page 77: ...r the delivery sensor PS803 the duplexing drive solenoid SL2 is turned on and the drive of the main motor M1 is transmitted to the delivery roller and the duplexing feed roller By turning the delivery roller in reverse direction the paper is lead to the duplexing feed unit and sent to the feed roller via duplexing feed roller There is no sensor on the duplexing paper s feeding path to detect the a...

Page 78: ...ation Pad 7 5 2 1 Preparation for Removing Separation Pad 0014 5935 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the front cover 2 Remove the right cover 3 Remove the left cover 4 Remove the rear cover 7 5 2 2 Removing Separation Pad 0014 5937 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the 2 screws 1 and remove the separation pad 2 F 7 6 7 5 3 Pickup Roller 7 5 3 1 Removi...

Page 79: ...Chapter 8 Fixing System ...

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Page 81: ...f the Fixing Unit 8 3 8 2 1 1 Fixing Temperature Control 8 3 8 3 Protection Function 8 4 8 3 1 Protection Function 8 4 8 4 Parts Replacement Procedure 8 5 8 4 1 Fixing Unit 8 5 8 4 1 1 Preparation for Removing Fixing Assembly 8 5 8 4 1 2 Removing Fixing Assembly 8 5 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 ...

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Page 83: ...ted on the ceramic plate By heating the fixing film with the fixing heater it gives heat to passing papers The thermistor TH1 locates at the center of the fixing heater H1 and detects the temperature of the heater The temperature fuse TP1 locates at the top center of the fixing heater If the temperature of the fixing heater increases abnormally it blocks power supply to the heater by meltdown The ...

Page 84: ...Chapter 8 8 2 F 8 2 1 Pressure roller 2 Fixing film H1 Fixing heater TH1 Thermistor TP1 Temperature fuse 1 TP1 TH1 H1 2 ...

Page 85: ...r is decreased and the voltage of the fixing heater temperature detection signal of the thermistor is decreased The CPU IC902 on the DCNT board monitors the voltage of the FSRTH signal By outputting the fixing heater drive signal FSRD in accordance with the voltage the CPU makes the phototriac coupler to turn ON OFF and it controls the temperature of the fixing heater to be the specified value The...

Page 86: ... fixing heater abnormally increases and the voltage of the fixing heater temperature detection signal sent from the thermistor becomes less than about 0 57V equivalent of 265 deg C the output of the comparator becomes L and the transistor turns OFF As a result of that the relay is turned OFF to block the power distribution to the fixing heater regardless the relay drive signal sent from the CPU 3 ...

Page 87: ... cable guide F 8 6 3 Disconnect the connector 1 and remove the cable white 2 from the cable guide F 8 7 4 Unhook the 3 claws 1 and remove the delivery sensor 2 F 8 8 5 Remove the 3 screws 1 and remove the fixing assembly 2 F 8 9 8 4 2 Fixing Film Unit 8 4 2 1 Preparation for Removing Fixing Film Unit 0014 5968 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the front cover 2 Remove the ri...

Page 88: ... 8 8 6 F 8 11 3 Recline the 2 pressure release levers 1 and remove the 2 springs 2 4 Remove the fixing film unit 4 2 pressure release levers 1 2 pressure plates 3 Do NOT touch the roller with bare hands F 8 12 ...

Page 89: ...Chapter 9 External and Controls ...

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Page 91: ...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 SCNT Board 9 4 9 3 8 1 Preparation for Removing the SCNT Board 9 4 9 3 8 2 Removing the SCNT Board 9 4 9 3 9 DCNT 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 NCU ...

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Page 93: ...s short circuit to loads and resulted in occurring overcurrent or over overvoltage there is a protecting function for overcurrent overvoltage to automatically shut the output voltage to avoid fault of power supply PCB In the case that the protecting function for overcurrent overvoltage is activated it recovers by turning off the main power switch to handle the load trouble and then turning on the ...

Page 94: ... Remove the front cover 2 Remove the right cover 3 Remove the left cover 9 3 2 2 Removing the Rear Cover 0014 6184 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the 2 shafts 1 and detach the feeding cover 2 F 9 4 2 Remove the rear cover 3 4 screws 1 2 claws 2 F 9 5 9 3 3 Right Cover 9 3 3 1 Removing the Right Cover 0014 6181 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the f...

Page 95: ...er 2 Remove the right cover 3 Remove the left cover 4 Remove the rear cover 5 Remove the control panel 6 Remove the cartridge cover 9 3 5 2 Removing the Upper Cover 0014 6810 i SENSYS MF4150 i SENSYS MF4140 1 Remove the 4 screws 1 and detach the upper cover 2 F 9 11 9 3 6 Cartridge Cover 9 3 6 1 Preparation for Removing the Cartridge Cover 0014 6442 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 ...

Page 96: ... Board 9 3 8 1 Preparation for Removing the SCNT Board 0014 5944 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the front cover 2 Remove the right cover 9 3 8 2 Removing the SCNT Board 0014 5945 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the SCNT board 3 9 connectors 1 4 screws 2 F 9 16 9 3 9 DCNT Board 9 3 9 1 Preparation for Removing the DCNT Board 0014 5976 i SENSYS MF41...

Page 97: ...put them inside the left side plate through the holes 2 F 9 20 5 Disconnect the 6 connectors 1 and free the cable 2 through the hole of PCB 6 Free the cable 3 from the cable clamp 4 F 9 21 7 Disconnect the connector 1 and free the flat cable 3 from the cable guide 2 F 9 22 Points to Note When Attaching Make sure to put the flat cable 3 through the hole 4 8 Remove the 2 screws 1 F 9 23 9 Disconnect...

Page 98: ...ews 2 F 9 26 9 3 12 High voitage Power Supply PCB 9 3 12 1 Preparation for Removing the High Voltage Power Supply Board 0014 5948 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 1 Remove the front cover 2 Remove the right cover 3 Remove the left cover 4 Remove the rear cover 5 Remove the control panel 6 Remove the cartridge cover 7 Remove the upper cover 9 3 12 2 Removing the High Voltage Power Su...

Page 99: ...Chapter 10 Maintenance and Inspection ...

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Page 101: ...dically Replaced Parts 10 1 10 2 Consumables 10 1 10 2 1 Consumable 10 1 10 3 Periodical Service 10 1 10 3 1 Periodically Service Items 10 1 10 4 Cleaning 10 1 10 4 1 Cleaning Items 10 1 10 4 2 Cleaning Method External Covers 10 1 10 4 3 Cleaning Method Reader Unit 10 2 ...

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Page 103: ...of exchange User Toner cartridge FX 10 The toner disappears and Field engineer Responsible by Cleaning area Cleaning area Cleaning timing User External covers When they are smudged Copyboard glass When the image read from the copyboard is smudged Backside of copyboard cover When the image read from the copyboard is smudged ADF reading area When the image read from the ADF has a black line in verti...

Page 104: ...the soft dry cloth 3 Scraper Open the ADF and wipe off the smudge with the soft dry cloth 4 Document delivery roller Wipe off the smudge with the soft dry cloth 5 Backside of copyboard cover Open the copyboard cover and wipe off the smudge with the soft dry cloth 6 Copyboard glass Open the copyboard cover and wipe off the smudge with the soft dry cloth 7 Backside of copyboard cover Open the copybo...

Page 105: ...Chapter 11 Measurement and Adjustments ...

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Page 107: ...Contents Contents 11 1 Basic Adjustments 11 1 11 1 1 Adjustment Items 11 1 11 1 2 Paper Margin Adjustment 11 1 11 1 3 Reading Adjustment 11 1 11 1 4 Print Adjustment 11 2 ...

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Page 109: ...ES Item to enable adjusting reading start position of vertical scanning at ADF reading T 11 3 ADF SUB REGIST COPY Item to enable adjusting reading end position of vertical scanning at making copy ADF reading ADF SUB REGIST SFINE ADF SUB REGIST FINE ADF SUB REGIST STD Item to enable adjusting reading end position of vertical scanning at FAX transmission reception ADF reading T 11 4 ADF SUB ZOOM Ite...

Page 110: ...canning when making duplex prints from the manual feeder tray TOP DUPLEX CAS Item to enable adjusting recording start position of vertical scanning when making duplex prints from the pickup tray LEFT MP Item to enable adjusting recording start position of horizontal scanning when making prints from the manual feeder tray LEFT CASSETTE Item to enable adjusting recording start position of horizontal...

Page 111: ...Chapter 12 Error Code ...

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Page 113: ...Contents Contents 12 1 Error Code 12 1 12 1 1 Error Code Outline 12 1 12 1 2 Error Code 12 1 ...

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Page 115: ... the HVT unit Replace the DCNT board Error Code Description 0001 Nothing G3 signal received within 35 sec 0003 Received DIS after sending DIS signal 0004 Received DCN after sending DTC signal 0009 Can t receive any signal within 35 sec in manual polling mode 0010 Received DCN signal after sending DTC signal in Polling Rx 0011 Can t receive any correct response after sending DTC signal 0012 Remote ...

Page 116: ...e after received is DCS signal 0070 User press stop key within receiving 0071 Memory full within receiving 0080 Can t detect any G3 signal within 35 sec specified by ITU T in phase B 0081 Received DTC signal in transmission phase 0082 Transmitting unit receives a signal other than DIS or DTC And DCN in phase B 0083 Detected FSK signal but Can t receive any signal within 35 sec 0084 Detect DCN sign...

Page 117: ...within phase 4 00DC Received T 30 signal in phase 4 other than DCS DIS or DTC 00DE Remote side no SUB capability 00E0 At phase D transmitting units out PPS_NULL 3 times consecutively but receive not answer 00E1 Received incorrect response after sending PPS_NULL 00E2 Can t receive any response in RR response procedure after sending PPS_NULL 00E4 At phase D transmitting units out PPS_MPS 3 times con...

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Page 119: ...Chapter 13 Service Mode ...

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Page 121: ... 13 2 6 SSSW SW21 13 6 13 2 6 1 Function List 13 6 13 2 6 2 Bit 4 Elaborated 13 6 13 2 7 SSSW SW30 13 6 13 2 7 1 Function List 13 6 13 2 7 2 Bit 7 and 8 Elaborated 13 7 13 2 8 SSSW SW37 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 SSSW SW39 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 SSSW SW51 13 8 13 2 1...

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Page 123: ...tains a margin adjustment item in printing and scanning VERSION DISPLAY Displays version information on the screen SOFT SWITCH Contains basic service function setting items for facsimile such as communication trouble measure REPORT Generates service reports CLEAR DATA Formats each data FUNCTION Runs print pattern output and ADF feeding tests H W TEST Runs sensor tests and key tests 13 1 2 How to A...

Page 124: ...ECM MODE CODING SCHEME 4mm 0 to 5 5mm 0 to 5 3 mm 0 to 5 33600 bps 33600 to 2400 33600 bps 33600 to 2400 10dBm 4 to 15 5dBm 8dBm 10dBm 10dBm ON OFF MMR MR MH Not used Not used Not used Not used EC UK SWEDEN SWITZERLAND AUSTRIA DENMARK NORWAY HOLLAND BELGIUM AUSTRALIA FINLAND N Z ITALY SPAIN PORTUGAL IRELAND HONG KONG MALAYSIA HUNGARY SOUTH AFRICA KOREA CHINA GERMAN FRANCE SINGAPORE CZECH SLOVENIA ...

Page 125: ...P TOP CASSETTE TOP DUPLEX MP TOP DUPLEX CAS LEFT MP LEFT CASSETTE LEFT DUPLEX MP LEFT DUPLEX CAS BOOK SCAN L R BOOK COPY L R BOOK FAX L R ADF SCAN L R ADF COPY L R ADF FAX L R SOFT SWITCH Bit Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used 1 2 3 4 5 6 7 8 SW01 SW02 SW...

Page 126: ... CLEAR DATA DRAM CLEAR MEMORY CLEAR PRINT COUNTER SCAN COUNTER H W TEST SIGNAL TEST RELAY TEST SENSOR TEST DIAL TEST VOLUME TEST KEY TEST AGING CIS TEST BOOK SCAN TEST COPY TEST JPN PSUDO RING ADF SCAN TEST IR SCAN TEST FUNCTION PRINT TEST PATTERN CONT PRINTING BLACK E FIX ASF WHITE SQUARE ON OFF REPORT SERVICE DATA LIST SW01 0 0 0 0 0 0 0 0 B i t 1 B i t 2 B i t 3 B i t 4 B i t 5 B i t 6 B i t 7 ...

Page 127: ...n be selected from a list of languages 13 2 3 SSSW SW04 13 2 3 1 Function List 0014 6107 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 T 13 3 13 2 3 2 Bit 8 Elaborated 0014 6110 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 An alarm can be set to go off when the transmission has been completed without a problem Change the setting to ON in order to activate this alarm 13 2 4 SSSW SW10 13 2 4 1 ...

Page 128: ... 0014 6191 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 T 13 6 13 2 6 2 Bit 4 Elaborated 0014 6192 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 When received data in G3 mode consists 100 lines or less the data can be chosen to print or not to print If the setting is changed to Do Not Print received data with 100 or less lines will be canceled and will not be printed out 13 2 7 SSSW SW30 13 2...

Page 129: ...SYS MF4140 i SENSYS MF4120 T 13 12 13 2 9 2 Bit 7 Elaborated 0014 6260 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 Enables to choose whether or not to carry out V 8 procedure during incoming calls Change the setting to No and V 8 procedure will not be carried out and T 30 procedure will start Bit7 Bit8 0 0 2 0 seconds 1 0 2 5 seconds 0 1 3 0 seconds 1 1 3 5 seconds Bit Function 1 0 1 V 34 Maxi...

Page 130: ... output setting T 13 14 13 2 11 SSSW SW54 13 2 11 1 Function List 0014 6266 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 T 13 15 13 2 11 2 Bit 6 and 7 Elaborated 0014 6267 i SENSYS MF4150 i SENSYS MF4140 i SENSYS MF4120 Enables to select from different types of time and date display used in reports Each combination of Bit 6 and Bit7 as shown below determines the type T 13 16 Bit Function 1 0 1 ...

Page 131: ... push the OK button Stoppbotaning is pushed when coming off the test mode F 13 9 SERVICE DATA LIST N A M E V E G A T E L 1 2 3 4 5 6 7 D A T E 0 4 0 5 2 0 0 5 1 1 5 5 C O U N T R Y R E G I O N C O D E O T H E R S S W 0 1 S W 1 6 S W 1 7 S W 3 2 S W 3 3 S W 4 8 S W 4 9 S W 6 4 0 0 2 0 8 0 0 0 C 0 0 0 0 5 2 0 0 0 2 1 0 0 8 E 1 2 0 2 A D 0 0 0 0 8 2 5 A 6 0 2 0 1 5 4 8 0 2 0 4 2 2 0 0 A 7 0 F 5 9 2 A...

Page 132: ...racter on the display disappears when the key corresponding to the character is pushed The correspondence table of the character and the key is as follows When the key is pushed for all keys it is checked that the corresponding character on the display disappears T 13 17 One touch dial key test When the OK button is pushed it becomes an one touch dial key test The a thorough h characters correspon...

Page 133: ...Chapter 14 Service Tools ...

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Page 135: ...Contents Contents 14 1 Service Tools 14 1 14 1 1 Solvents Lubricants Table 14 1 ...

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Page 137: ... E g Plastics Rubber Metals Grease Buildup Toner Buildup Alcohols Do not put close to fire Source locally 2 Lubricating Oil Apply to the gear Apply in between the shaft and the shaft support Special oil Special solid lubricant agent Lithium soap Molykote EM 50L Produced by Dow Corning Corporation Tool number HY9 0007 3 Lubricating Oil Apply in between the pressure roller shaft and the grounding pl...

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Page 139: ...Aug 21 2006 ...

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