Canon LaserBase MF8180C Service Manual Download Page 112

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Chapter 3

3-22

F-3-136

3.2.12.2 Removing the Reader Assembly

0007-8459

1) Open the reader assembly, and remove the left and right E-rings [1]; then,

pull out the pin [2].

F-3-137

When closing the reader assembly, be sure to push in the arm [1] first.

F-3-138

2) Open the left and right claws in the direction of the arrows, and detach the

hinge cover [1].

3) Free the 2 harness bands [1], and disconnect the 2 cables [2] connected to

the reader assembly.

F-3-139

4) Open the harness band [1], and disconnect the 2 cables connected to the

reader assembly.

F-3-140

5) Remove the 6 screws [1], and lift the reader unit to detach.

F-3-141

3.2.12.3 Removing the Right Cover

0007-7956

1) Remove the 2 screws [1] of the side; then, remove the 3 claws [2] to detach

the left cover [3].

F-3-142

[2]

[3]

[1]

[3]

[2]

[1]

[2]

[1]

[2]

[1]

[3]

[2]

[1]

Summary of Contents for LaserBase MF8180C

Page 1: ...Jan 20 2006 Service Manual MF8100 Series LaserBase MF8180C ...

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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: ...Major Components 2 1 2 1 2 Basic Sequence 2 2 2 1 2 1 Basic Sequence of Operation at Power on 2 2 2 1 2 2 Basic Sequence of Operation in Response to a Press on the Start Key book 2 3 2 2 Laser Exposure 2 4 2 2 1 Overview Configuration 2 4 2 2 1 1 Outline 2 4 2 2 2 Controlling the Laser 2 5 2 2 2 1 Outline 2 5 2 2 2 2 Laser Emission Control 2 6 2 2 2 3 Automatic Power Control APC 2 6 2 2 2 4 Horizo...

Page 8: ... 2 3 6 2 Cleaning Roller Engaging Control 2 22 2 3 6 3 Memory Tag 2 23 2 3 6 4 Detecting the ITB Home Position 2 24 2 3 6 5 Drum Cartridge Presence Detection 2 25 2 3 6 6 Checking the Life of the Drum Cartridge 2 26 2 3 7 Secondary Transfer Mechanism 2 27 2 3 7 1 Outline 2 27 2 3 7 2 Secondary Transfer Roller Engaging Control 2 28 2 3 7 3 Secondary Roller Position Detection 2 29 2 4 Pickup and Fee...

Page 9: ...ver 3 4 3 2 1 6 Removing the Front Cover 3 4 3 2 2 Rear Cover 3 4 3 2 2 1 Removing the Rear Cover 3 4 3 2 3 Top Cover 3 5 3 2 3 1 Removing the Cassettes 3 5 3 2 3 2 Removing the Rear Cover 3 5 3 2 3 3 Removing the Reader Assembly 3 5 3 2 3 4 Removing the Right Cover 3 6 3 2 3 5 Removing the Left Cover 3 6 3 2 3 6 Removing the Power Supply Assembly 3 6 3 2 3 7 Removing the Face Down Cover 3 6 3 2 3...

Page 10: ...ng the Power Supply Assembly 3 23 3 2 12 6 Removing the Face Down Cover 3 23 3 2 12 7 Removing the Top Cover 3 23 3 2 12 8 Removing the Right Frame 3 24 3 2 12 9 Removing the Shield Plate 3 24 3 2 12 10 Removing the DCNT Board 3 25 3 2 13 NCU Board 3 25 3 2 13 1 Removing the Rear Cover 3 25 3 2 13 2 Removing the Scanner Unit 3 25 3 2 13 3 Removing the Modular Board Cover 3 26 3 2 13 4 Removing the...

Page 11: ...g the Power Supply Assembly 3 40 3 2 18 7 Removing the Face Down Cover 3 41 3 2 18 8 Removing the Top Cover 3 41 3 2 18 9 Removing the Right Frame 3 42 3 2 18 10 Removing the Left Frame 3 42 3 2 18 11 Removing the Cassette Feeder 3 42 3 2 18 12 Removing the Shield Plate 3 42 3 2 18 13 Removing the Fan Duct 3 42 3 2 18 14 Removing the Lower Case Assembly 3 43 3 2 18 15 Removing the Sub High voltage...

Page 12: ...d Unit 3 58 3 3 5 4 Removing the ADF Unit 3 58 3 3 5 5 Points to Note When Mounting the ADF Unit 3 59 3 3 5 6 Removing the Document Pickup Roller Unit 3 59 3 3 5 7 Removing the Separation guide unit 3 60 3 3 6 Feed Roller 3 60 3 3 6 1 Removing the Rear Cover 3 60 3 3 6 2 Removing the Scanner Unit 3 60 3 3 6 3 Removing the SCNT Board Unit 3 61 3 3 6 4 Removing the ADF Unit 3 61 3 3 6 5 Points to No...

Page 13: ...ing the Power Supply Assembly 3 78 3 5 1 6 Removing the Face Down Cover 3 78 3 5 1 7 Removing the Top Cover 3 78 3 5 1 8 Removing the Right Frame 3 79 3 5 1 9 Removing the Shield Plate 3 79 3 5 1 10 Removing the Rotary Drive Assembly 3 79 3 5 2 Drum Cartridge Memory Tag Contact 3 80 3 5 2 1 Removing the Rear Cover 3 80 3 5 2 2 Removing the Reader Assembly 3 80 3 5 2 3 Removing the Right Cover 3 81...

Page 14: ...98 3 5 6 3 Removing the Right Cover 3 99 3 5 6 4 Removing the Left Cover 3 99 3 5 6 5 Removing the Power Supply Assembly 3 99 3 5 6 6 Removing the Face Down Cover 3 99 3 5 6 7 Removing the Top Cover 3 99 3 5 6 8 Removing the Right Frame 3 101 3 5 6 9 Removing the Shield Plate 3 101 3 5 6 10 Removing the Rotary Drive Assembly 3 101 3 5 6 11 Removing the Toner Cartridge Motor 3 101 3 5 6 12 Removing...

Page 15: ... the Fan Duct 3 119 3 5 11 14 Removing the Laser Scanner Unit Base 3 119 3 5 11 15 Removing the Developing Rotary Assembly 3 119 3 5 11 16 Removing the Developing Rotary Toner Level Detection PCB 3 120 3 5 12 Toner Cartridge Motor 3 120 3 5 12 1 Removing the Rear Cover 3 120 3 5 12 2 Removing the Reader Assembly 3 121 3 5 12 3 Removing the Right Cover 3 121 3 5 12 4 Removing the Left Cover 3 121 3...

Page 16: ... 1 Removing the Cassette 3 137 3 6 5 2 Removing the Front of the Cassette 3 137 3 6 5 3 Removing the Cassette Separation Pad 3 138 3 6 6 Manual Pickup Roller 3 138 3 6 6 1 Removing the Manual Pickup Roller 3 138 3 6 7 Manual Pickup Solenoid 3 138 3 6 7 1 Removing the Rear Cover 3 138 3 6 7 2 Removing the Reader Assembly 3 139 3 6 7 3 Removing the Right Cover 3 140 3 6 7 4 Removing the Left Cover 3...

Page 17: ...sembly 3 155 3 7 2 Fixing Film Unit 3 155 3 7 2 1 Removing the Fixing Assembly 3 155 3 7 2 2 Removing the Face Up Cover 3 155 3 7 2 3 Removing the Fixing Film Unit 3 156 3 7 3 Fixing Pressure Roller 3 157 3 7 3 1 Removing the Fixing Assembly 3 157 3 7 3 2 Removing the Face Up Cover 3 157 3 7 3 3 Removing the Fixing Film Unit 3 157 3 7 3 4 Removing the Fixing Pressure Roller 3 159 3 7 4 Fixing Deli...

Page 18: ... Replacement Parts 4 2 4 3 Consumables 4 2 4 3 1 Expected Service Life of Consumable Parts 4 2 4 4 Periodical Service 4 3 4 4 1 Periodic Service 4 3 Chapter 5 TROUBLESHOOTING 5 1 Measurement and Adjustment 5 1 5 1 1 Initial Checkup 5 1 5 1 1 1 Initial Check 5 1 5 1 2 Test Printing 5 1 5 1 2 1 Test Print 5 1 5 1 3 Electrical Adjustment 5 1 5 1 3 1 Work After Replacing the Laser Scanner Unit 5 1 5 1...

Page 19: ...9 5 5 4 5 Faculty Test 5 11 Chapter 6 APPENDIX 6 1 Outline of Electrical Components 6 1 6 1 1 Cluth Solenoid 6 1 6 1 1 1 Cluth Solenid 6 1 6 1 2 Motor Fan 6 1 6 1 2 1 Motor Fan 6 1 6 1 3 Sensor 6 2 6 1 3 1 Sensor 6 2 6 1 4 Switch 6 2 6 1 4 1 Switch Speaker Thermistor 6 2 6 1 5 PCBs 6 3 6 1 5 1 PCBs 6 3 6 1 6 Variable Resistors VR LED and Check Pins by PCB 6 3 6 1 6 1 Variable Resistors VR Test Pin...

Page 20: ...Contents ...

Page 21: ...Chapter 1 PRODUCT DESCRIPTION ...

Page 22: ......

Page 23: ... 1 2 4 Major Component 1 5 1 3 Safety 1 5 1 3 1 Safety of the Laser Light 1 5 1 3 2 Safety of Toner 1 5 1 3 3 Safety and Ozone 1 5 1 3 4 Points to Note When Replacing Disposing of the Lithium Battery 1 5 1 3 5 CDRH Ordinances 1 6 1 4 Functional Configuration 1 6 1 4 1 Functional Construction 1 6 1 5 Basic Sequense 1 6 1 5 1 Basic Operation Sequence 1 6 1 5 2 Power on Sequence 1 7 ...

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Page 25: ... Right edge 6 to 1 mm Left edge 3 2 mm Trailing edge 12 to 1 mm Reading resolution ADF 600x600 dpi copyboard glass 1200x2400 dpi Copying resolution ADF 600 x 600 dpi copyboard glass 600 x 600 dpi Printing resolution 600 x 600 dpi Print speed A4 if black and white about 19 prints min if color about 4 prints min Print speed LTR if black and white about 20 prints min if color about 4 prints min Warm ...

Page 26: ...n no Subaddress transmission no Confidential transmission no Relay broadcast originating transmission no Relay broadcast transmission no Polling transmission no Dual access Number of jobs reserved for transmission 20 max Number of jobs stored for reception 20 max when combined 25 jobs max FAX TEL switching yes Answering machine connection yes Remote reception yes by remote ID tone from extension C...

Page 27: ... Document Feeder 8 Cassette 3 Document feeder tray 9 Platen glass cover 4 Document guides 10 Platen glass 5 Output tray 11 Multi purpose tray 6 Cartridge cover 12 USB port 15 Telephone line jack 13 Power socket 16 External device jack 14 Face up cover 17 Ethernet port 1 2 3 4 5 6 7 8 9 10 11 LINE EXT 12 13 14 15 16 17 ...

Page 28: ...idge 18 Developing rotary 6 ITB 19 Toner cartridge 7 Density sensor 20 Fixing film unit 8 Primary transfer roller 21 Pressure roller 9 ITB cleaning roller 22 Fixing delivery roller 10 Registration shutter 23 Facedown delivery roller 11 Pick up roller 24 Cassette feeding roller 12 Multi purpose tray 25 CCD unit 13 Separation pad 1 CCD unit 5 Registration roller assembly 2 Laser scanner unit 6 Rotar...

Page 29: ...l material They are likely to react with each other 1 3 3 Safety and Ozone 0007 4970 The cleaning charge roller used in the machine generates ozone gas O3 at time of corona discharge only when the machine is in operation A set of rules exists under Underwriters Laboratories UL standards for levels of ozone gas permitted and the machine has been certified to comply with the rules at time of shipmen...

Page 30: ...0008 1692 The operation sequences for the printer are controlled by the CPU in the DCNTboard in the engine control system The table below indicates the purposes and engine operations of each period from when the power is turned on until a print operation is completed and each motor stops rotating See the appendix for the timing chart T 1 1 Period Purpose Remarks WAIT Wait From the power switch is ...

Page 31: ...rotation To transfer secondarily a toner image on the ITB to a paper and then delivers outpaper with toner fixed on Instant a print command is input from the interface controller the initial rotation starts Fan on CPU initialization ASIC initialization Video interface communication ready Video interface communication start Printer ID check Power on Scanner motor initial drive drive Image stabiliza...

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Page 33: ...Chapter 2 TECHNICAL REFERENCE ...

Page 34: ......

Page 35: ...atent Image Formation Block 2 9 2 3 1 4 Developing Block 2 9 2 3 1 5 Transfer Block 2 10 2 3 1 6 Fixing Block 2 11 2 3 1 7 ITB Cleaning Block 2 12 2 3 2 Driving and Controlling the High Voltage System 2 14 2 3 2 1 Outline 2 14 2 3 2 2 Primary Charging Bias Generation 2 14 2 3 2 3 Developing Bias Generation 2 14 2 3 2 4 Primary Transfer Bias Generation 2 14 2 3 2 5 Secondary Transfer Bias Generatio...

Page 36: ...4 3 3 1 Pick up Stationary Jam 2 33 2 4 3 3 2 Delivery Stationary Jam 2 33 2 4 3 4 Other Jams 2 33 2 4 3 4 1 Fixing Unit Wrapping Jam 2 33 2 4 3 4 2 Door Open Jam 2 33 2 4 3 4 3 Residual Paper Jam 2 33 2 4 4 Cassette Pickup Unit 2 34 2 4 4 1 Pickup from the Cassette 2 34 2 4 5 Manual Feed Pickup Unit 2 34 2 4 5 1 Multi purpose Tray Pick up 2 34 2 5 Fixing Unit 2 34 2 5 1 Overview Configuration 2 3...

Page 37: ...ning by moving the CCD unit in ADF mode scanning by moving the original Reading resolution 1200 main scanning x 2400 sub scanning dpi ADF 600 x 600dpi Scanner position detection by home position sensor Reproduction ratio zoom in copyboard mode 100 in ADF mode 100 main scanning image processing by SCNT board sub scanning image processing by SCNT board CCD unit drive control by flat bed motor Scanni...

Page 38: ...ut image data of the document then the delivery roller delivers it to the output tray The document feed motor drives the various rollers of the ADF Reading from the platen glass The CCD unit driven by the flatbed motor reads out image data of a document on the platen glass 2 1 2 Basic Sequence 2 1 2 1 Basic Sequence of Operation at Power on 0008 2930 Basic Sequence of Operation at Power On F 2 3 1...

Page 39: ... the CCD main sub scanning point adjustment 2 1 2 2 Basic Sequence of Operation in Response to a Press on the Start Key book 0008 2931 Basic Sequence of Operation in Response to a Press on the Start Key BOOK F 2 5 HP shading position 1 black shading 1 2 scanning lamp ON 3 scanning lamp warm up 2 5 main sub scanning position adjustment 4 gain correction 3 STBY SREADY reader motor scanning lamp HP s...

Page 40: ...fully with the LASER CONTROL signal and then starts to control the rotation of the scanner motor 3 The DCNT Board rotates the motor at a specified speed with the SCANNER MOTOR SPEED CONTROL signal 4 The DCNT Board sends the VIDEO signals to the laser driver circuit after the rotational speed of the motor reaches its target value 5 The laser driver PCB emits light from the two laser diodes accordin...

Page 41: ...CNT0 CNT1 CNT2 signals for changing the operation mode of the laser to the logic circuit in the laser driver IC The laser driver performs the laser control responsive to a combination of the CNT0 CNT1 CNT2 signals T 2 4 The following four controls are performed with the LASER CONTROL signals 1 Laser emission control Operation mode CNT0 CNT1 CNT2 Details Standby mode L L L Laser control off status ...

Page 42: ...ce on mode during the unblanking period Note and emits light from the laser diodes LD1 LD2 forcefully 2 Each laser beam is sent to the BD PCB located on the scanning path of laser beams 3 The BD circuit detects these laser beams and generates the BD INPUT BDI signal The signal is sent to the DCNT Board 4 The DCNT Board generates the HORIZONTAL SYNCHRONOUS BDO signal based on the BDI signal and sen...

Page 43: ...ailure to the SCNT Board under the following conditions 1 Optical unit failure If the detected period of the BDI signal does not satisfy a specified range within 20 seconds at scanner motor start up or if the BDI signal cannot be detected for 0 5 second after the detected period of the signal has satisfied a specified range the DC controller determines a optical unit failure 2 BD error If the inpu...

Page 44: ...aper Step 5 Primary transfer Toner on the drum is transferred to the ITB Step 6 Secondary transfer Toner on the ITB is transferred to paper Step 7 Separation Paper separates from the ITB 4 Fixing block Fuses a toner image onto paper Step 8 Fixing Photo sensitive drum ITB Fixing unit Developing rotary Blade Memory tag Primary transfer roller Secondary transfer roller Image cartridge Toner cartridge...

Page 45: ...g roller is made with conductive rubber A DC bias is applied to the primary charging roller to keep the potential on the drum surface uniformly F 2 15 Step 2 Laser beam exposure An electrostatic latent image is formed on the photosensitive drum in this step When the laser beams scan a negatively charged drum surface it causes the charges in areas struck by the laser beams to be neutralized An elec...

Page 46: ...follow in actuality they are negative However they are more positive than the charges on the cylinder F 2 18 2 3 1 5 Transfer Block 0007 4980 This block comprises three steps which transfers the toner image on the drum surface onto paper Step 5 Primary transfer The toner on the drum is transferred onto the ITB in this step A DC positive bias is applied to the primary transfer roller opposite to th...

Page 47: ...from the ITB in the step This printer utilizes the static charge eliminator to reduce the charge on the back of paper and weaken the electrostatic adhesion of the paper and facilitate separation This makes a separation operation easier F 2 21 2 3 1 6 Fixing Block 0011 6376 A toner image transferred onto paper in the transfer block can be smeared easily by hands since only the electrostatic attract...

Page 48: ...sferred onto paper Some toner remains on the ITB This toner is called the residual toner Step 9 Auxiliary ITB cleaning roller charging In this step the holding force of the residual toner on the ITB is strengthened to prevent the toner from falling from the ITB and scattering in the printer A DC positive bias is applied to the auxiliary ITB cleaning roller to charge the residual toner on the ITB p...

Page 49: ...um is scraped away with the cleaning blade The removed toner is collected with the waste toner screws into the waste toner case This allows the drum surface to be cleaned F 2 26 Photosensitive drum DC bias positive Residual toner ITB Screw Screw DC bias negative Waste toner case Drum cartridge Waste toner transport plate Stirrer Photosensitive drum DC bias positive Residual toner ITB Screw Screw W...

Page 50: ... adjustment of image density The developing bias is output to charge toner that was not charged by friction This bias is applied onto the blade in the toner cartridge at a specified timing 2 3 2 4 Primary Transfer Bias Generation 0008 1697 The primary transfer bias is output to transfer a toner image on the photosensitive drum to the ITB in the drum cartridge Two kinds of the biases DC positive bi...

Page 51: ...TB cleaning bias is output to clean the ITB Three kinds of the biases DC positive bias DC negative bias and AC bias are generated in the ITB cleaning high voltage generation circuit in the high voltage power supply circuit The AC bias and DC positive bias are output to the ITB cleaning roller to clean positively charged residual toners on the ITB The AC bias and DC negative bias are output to the ...

Page 52: ...e functions the rotary has are described next 2 3 4 2 Developing Rotary Rotation Control 0008 1707 This control is utilized to rotate the rotary during a print or toner cartridge removal operation in order to move each toner cartridge to its specified position The DCNT Board moves the rotary by turning on off the developing rotary motor DCM703 as monitoring the position of the rotary with the deve...

Page 53: ...time of rotary disengaging travelling from an engaging position to a disengaging position the DCNT Board rotates the engaging motor counterclockwise and instructs the reverse operation of rotary engaging Then the developing cylinder is disengaged from the drum A mechanism used in this control is also used in a memory tag contact engaging operation Developing rotary position detection is performed ...

Page 54: ... to print mode Then it rotates the motor clockwise for a specified period to switch the mode to initial mode The DCNT Board detects mode the printer is actually in from the detection results of the PS712 and prepare for the next operation The DCNT Board determines a developing rotary engaging mechanism abnormality stops the pirnter engine and notifies it to the SCNT Board under the following condi...

Page 55: ...ates the information with specified timing and writes it to the memory tags for each cartridge The DCNT Board instructs the memory tag to read or write under the following conditions Read Power is turned on Top cover is closed Write After 50 papers printing When a Change Has Occurred to the Data on the Lives of Parts F 2 33 2 3 5 3 Memory Tag Contact Engaging Control 0007 4985 This control is util...

Page 56: ...ge hours of the developing cylinder which stored in the memory tag Developing cylinder usage hour DC application time data sent from the DCNT Board is written in the memory tag in the toner cartridge The DCNT Board updates data with specified timing If updated data developing cylinder cumulative usage hours reaches a specified value the DCNT Board determines a developing cyl inder end of life c To...

Page 57: ...e machine s drum cartridge is equipped with a mechanism that forms images on the ITB The drum cartridge consists of a drum cartridge and an ITB unit con structed as a single entity The following shows the machine s cartridge and the arrangement of loads DCNT Board TONER LEVEL DETECTION signal TONS LED DRIVE signal P3 3V Developing rotary toner level detection circuit Toner cartridge Light guide St...

Page 58: ... This transmits the drive of the main motor DCM701 to the engaging cam Then the roller bushing is pushed out and the two rollers start to engage to the ITB 3 At this point the DCNT Board is monitoring the output of the PS714 When the output becomes L it lets out the CL2 This allows the cam to stop and the two rollers to stop at each engaging position 4 After a print operation the DCNT Board let in...

Page 59: ...emory tag through the memory tag contact the DCNT Board updates data with specified timing and rewrites it to the mem ory tag The DCNT Board instructs the memory tag to read or write under the following conditions Read Power is turned on Top cover is closed Write After 50 papers printing When a Change Has Occurred to the Data on the Lives of Parts DCNT Board Auxiliary ITB cleaning roller Main moto...

Page 60: ...indicate the home position HP1 and increases the count each time a new light blocking face is detected HP2 HP3 HP4 3 In the case of full color operation the DCNT Board uses these signals to generate the vertical sync signal TOP 4 times and sends them to the SCNT Board Thereafter the DCNT Board receives video data of each color from the SCNT Board 4 times and draws images of individual colors on sp...

Page 61: ...ACK signal for secondary transfer bias exceed a specified value The DCNT Board determines a cartridge presence only when the three conditions above are satisfied When the DCNT Board determines a cartridge absence it stops the printer engine and notifies an drum cartridge out to the SCNT Board DCNT Board ITB home position sensor PS71 Drum cartridge ITB HOME POSITION LED EMISSION signal TOPLED ITB H...

Page 62: ...er cover is closed or a print job is over when the cumulative period of use reaches a specific level it will identify the condition as indicating the need of replacement of the drum cartridge c Waste Toner The machine is equipped with a mechanism to find out when the cartridge becomes full of waste toner The detection is undertaken by the DCNT Board by moni toring the output of the waste toner det...

Page 63: ...which are operated by the main motor drive The secondary transfer roller rotates by the motor drive The engaging lever performs an engaging operation between the secondary transfer roller and ITB in roller engaging control Stirrer Light emitter Light receiver Waste toner transport plate DCNT Board Light receiver Light emitter WASTETONER FULL DETECTIONsignal WASTONS LED DRIVE signal P3 3V Waste ton...

Page 64: ...e DCNT Board is monitoring the output of the PS714 When the output becomes L it lets out the CL2 This allows the cam to stop and the secondary transfer roller to stop at its engaging position 4 After a print operation the DCNT Board lets in the CL2 again for 0 2 seconds This disengages the secondary transfer roller from the ITB 5 The DCNT Board monitors the output of the PS714 When the output beco...

Page 65: ... return the gear to its home position Then the DCNT Board detects the position of the secondary transfer roller engaging and disengaging by monitoring the FEEDBACK TR2S signal for the sec ondary transfer bias When the roller is at its engaging position the resistance of the roller increases and the value of the TR2S signal decreases since the roller contacts with the ITB When the roller is at a di...

Page 66: ...are controlled by the DCNT board which governs 2 motors 2 clutches and 2 solenoids The paper path is equipped with 3 photointerrupters PS1 PS711 PS717 PS720 checking to see whether paper has reached or moved past a specific sensor po sition If paper fails to reach or move past a specific sensor within a specific period of time the CPU on the DCNT board will identify the condition as being a jam an...

Page 67: ...aper as far as the fixing assembly These 2 assemblies have the following functions Cassette 1 picks up print paper from the cassette Multifeeder 1 picks up printed paper placed in the multifeeder tray paper path 1 corrects the movement of paper by removing skew 2 controls the speed at which paper is moved to suit paper type DCNT Board ITB Pressure roller REGISTRATION PAPER DETECTION signal REGS FI...

Page 68: ...es a feed speed in two levels based on a paper type specification command sent from the SCNT Borad Types of paper and their feed speeds are indicated below T 2 6 2 4 2 3 Detecting the Machine Inside Temperature 0008 1723 As a means to prevent overheating inside the machine the machine is equipped with a thermistor TH3 used to detect the temperature inside the machine found near the toner cartridge...

Page 69: ...ed period t after the start of a re pick up operation the registration clutch is on the CPU determines a delivery delay jam t Approx 2 3 seconds 2 4 3 3 Stationary Jams 2 4 3 3 1 Pick up Stationary Jam 0007 4993 When the trailing edge of paper does not pass the registration sensor PS711 within a specified period t after the start of a re pick up operation the registration clutch is on the CPU dete...

Page 70: ... multiple fed paper is removed with the separation pad paper is sent to the registration roller 5 After the skew of paper is corrected with the registration shutter a feed speed is changed based on a paper type specified from the SCNT Board in feed speed control 6 Then the SCNT Board let in the registration clutch CL1 within a specified period in ITB home position detection function This allows th...

Page 71: ...nuous printing and it differs depending on the color of print monochrome or colors and the media type 3 Between sheets temperature control This control is to make the temperature of the fixing heater lower than the target temperature during continuous printing to prevent the temperature rise of the fixing sleeve between sheets The between sheets temperature varies depending on the distance between...

Page 72: ...C for minimum 1 second during the print temperature control and between sheets temperature control the CPU judges it abnormal Abnormal low temperature on the sub thermistor If the sub thermistor continuously reads below 75 deg C for minimum 2 seconds after 20 seconds from when the heater is energized the CPU judges it abnormal Break during start up in the sub thermistor If the sub thermistor conti...

Page 73: ... following operations according to the CPU 1 Laser scanner control 2 Control of communications with the interface controller 3 Power supply unit fixing control circuit low voltage power supply circuit control 4 High voltage power supply PCB control 5 Drive control for the main motor 6 Sensor switch controls 7 Clutch solenoid controls 8 Reading writing to the memory tag 9 250 sheet paper feeder opt...

Page 74: ... circuit drives each roller used for paper feed and image formation The DCNT Board drives the motor by controlling the MAIN MOTOR ACCELERATION MAIMACC signal and MAIN MOTOR DECELERATION MAIM DEC signal The illustration below shows the control circuit of the motor Name Functions Type Direction of rotation Speed Fault detection Main motor DCM701 drives the following multifeeder pickup roller registr...

Page 75: ...e value 2 6 2 5 Developing Rotary Motor Control 0008 1729 This control is utilized to drive the developing rotary motor DCM703 The DCM703 a three phase eight pole DC motor with a built in encoder drives the developing rotary The DCNT Board drives the motor by controlling the DEVELOPING ROTARY MOTOR ON ROTMON signal and DEVELOPING ROTARY SPEED CON TROL ROTMPWM signal The illustration below shows th...

Page 76: ...e power supply PCB and car tridge The CPU IC101 controls the cooling fan The CPU outputs the FAN DRIVE FAN1D signal after receiving a print command from the interface controller and rotates the cooling fan After the completion of a print operation the CPU rotates the fan for a specified period based on internal temperature by monitoring the internal temperature detection thermistor TH3 Then it sto...

Page 77: ...C301 LAN control IC501 DDR memory IC502 DDR memory IC601 ADF motor driver IC651 book mode motor driver IC701 control panel controller IC801 fax modem IC1001 image processing controller IC1002 flash ROM for image processing data storage IC1101 ASIC for recording signal control IC1201 clock IC communication block recording signal processing block image signal processing block JackÅ No Function JLBP1...

Page 78: ...t or an interface of a graphics system used in conjunction with an application CARPS is sued after installing it to a Microsoft Windows 2000 XP or 98 Me environment Use the CD ROM that comes with the machine for installation In CARPS the paper size original size number of prints to make and settings related to print quality are all specified on a computer screen The way these settings are made dif...

Page 79: ...Chapter 3 DISASSEMBLY AND ASSEMBLY ...

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Page 81: ... 3 2 4 1 Removing the Cassettes 3 8 3 2 4 2 Removing the Rear Cover 3 8 3 2 4 3 Removing the Right Cover with the reader assembly intact 3 8 3 2 5 Left Cover 3 9 3 2 5 1 Removing the Cassettes 3 9 3 2 5 2 Removing the Rear Cover 3 9 3 2 5 3 Removing the Left Cover with the reader assembly intact 3 9 3 2 6 Upper Right Cover 3 10 3 2 6 1 Removing the Rear Cover 3 10 3 2 6 2 Removing the Reader Assem...

Page 82: ... 1 Removing the Rear Cover 3 26 3 2 14 2 Removing the Scanner Unit 3 26 3 2 14 3 Removing the Modular Board Cover 3 27 3 2 14 4 Removing the Modular PCB 3 27 3 2 15 Power Supply PCB 3 27 3 2 15 1 Removing the Rear Cover 3 27 3 2 15 2 Removing the Reader Assembly 3 27 3 2 15 3 Removing the Power Supply Assembly 3 28 3 2 15 4 Removing the Power Supply PCB 3 28 3 2 16 Print Power Supply PCB 3 29 3 2 ...

Page 83: ...Temperature Detection Thermistor 3 43 3 2 19 1 Removing the Rear Cover 3 43 3 2 19 2 Removing the Reader Assembly 3 44 3 2 19 3 Removing the Right Cover 3 44 3 2 19 4 Removing the Left Cover 3 45 3 2 19 5 Removing the Power Supply Assembly 3 45 3 2 19 6 Removing the Face Down Cover 3 45 3 2 19 7 Removing the Top Cover 3 45 3 2 19 8 Removing the Right Frame 3 46 3 2 19 9 Removing the Shield Plate 3...

Page 84: ...nting the ADF Unit 3 61 3 3 6 6 Removing the Document feed roller 3 61 3 3 7 Pickup Roller Unit 3 63 3 3 7 1 Removing the Rear Cover 3 63 3 3 7 2 Removing the Scanner Unit 3 63 3 3 7 3 Removing the SCNT Board Unit 3 63 3 3 7 4 Removing the ADF Unit 3 64 3 3 7 5 Points to Note When Mounting the ADF Unit 3 64 3 3 7 6 Removing the Document Pickup Roller Unit 3 64 3 3 8 Reader Unit 3 65 3 3 8 1 Removi...

Page 85: ...r 3 81 3 5 2 5 Removing the Power Supply Assembly 3 82 3 5 2 6 Removing the Face Down Cover 3 82 3 5 2 7 Removing the Top Cover 3 82 3 5 2 8 Removing the Right Frame 3 83 3 5 2 9 Removing the Shield Plate 3 83 3 5 2 10 Removing the Inside Cover 3 83 3 5 2 11 Removing the Drum Cartridge Memory Tag Contact 3 84 3 5 3 Developing Rotary Unit 3 84 3 5 3 1 Removing the Rear Cover 3 84 3 5 3 2 Removing t...

Page 86: ... Developing Rotary Stopper Solenoid 3 102 3 5 7 Density Detection PCB 3 102 3 5 7 1 Removing the Rear Cover 3 102 3 5 7 2 Removing the Reader Assembly 3 102 3 5 7 3 Removing the Right Cover 3 103 3 5 7 4 Removing the Left Cover 3 103 3 5 7 5 Removing the Power Supply Assembly 3 104 3 5 7 6 Removing the Face Down Cover 3 104 3 5 7 7 Removing the Top Cover 3 104 3 5 7 8 Removing the Inside Cover 3 1...

Page 87: ... Removing the Face Down Cover 3 122 3 5 12 7 Removing the Top Cover 3 122 3 5 12 8 Removing the Right Frame 3 123 3 5 12 9 Removing the Shield Plate 3 123 3 5 12 10 Removing the Rotary Drive Assembly 3 123 3 5 12 11 Removing the Toner Cartridge Motor 3 124 3 6 PICKUP AND FEEDING SYSTEM 3 124 3 6 1 Cassette Pickup Roller 3 124 3 6 1 1 Removing the Cassettes 3 124 3 6 1 2 Removing the Rear Cover 3 1...

Page 88: ... 3 6 7 6 Removing the Face Down Cover 3 140 3 6 7 7 Removing the Top Cover 3 140 3 6 7 8 Removing the Right Frame 3 142 3 6 7 9 Removing the Shield Plate 3 142 3 6 7 10 Removing the Inside Cover 3 142 3 6 7 11 Removing the Registration Clutch 3 142 3 6 7 12 Removing the Main Drive Assembly 3 142 3 6 7 13 Removing the Manual Pickup Feed Solenoid 3 143 3 6 8 Manual Separation Roller 3 143 3 6 8 1 Re...

Page 89: ... Fixing Assembly 3 159 3 7 4 2 Removing the Face Up Cover 3 159 3 7 5 Pre Fixing Paper Detection Sensor 3 159 3 7 5 1 Removing the Rear Cover 3 159 3 7 5 2 Removing the Reader Assembly 3 160 3 7 5 3 Removing the Right Cover 3 161 3 7 5 4 Removing the Left Cover 3 161 3 7 5 5 Removing the Power Supply Assembly 3 161 3 7 5 6 Removing the Face Down Cover 3 161 3 7 5 7 Removing the Top Cover 3 161 3 7...

Page 90: ......

Page 91: ...FF 3 1 2 Toner cartridge removal 0007 8337 1 Remove the reinforcement plate 2 Be sure that the engaging sensor flag is at the position as shown in the following figure in toner cartridges memory tag contact disengaging status If the sensor flag is not at the position in the following figure in toner cartridges memory tag contact engaging status rotate the 33T gear by hands so that it is at the pos...

Page 92: ...rinter F 3 4 3 2 EXTERNAL AND CONTROLS SYSTEM 3 2 1 Front Cover 3 2 1 1 Removing the Cassettes 0007 6971 1 Hold the grip and take out the cassette 3 2 1 2 Removing the Rear Cover 0007 6981 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 5 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 6 4 Close the re...

Page 93: ...p it becomes easy F 3 11 3 2 1 4 Removing the Left Cover with the reader assembly intact 0007 6984 1 Disconnect the plug 1 and free the cable 2 of the reader assembly from the guide F 3 12 2 Open the reader assembly 1 and the top cover 2 F 3 13 3 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the right cover 3 MEMO It is difficult to release three claws 2 If you release the ...

Page 94: ... inside while pushing the guide assembly 2 toward the outside to free the bosses F 3 17 2 Slide the front cover 1 to the left to detach F 3 18 3 2 2 Rear Cover 3 2 2 1 Removing the Rear Cover 0007 6974 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 19 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 20...

Page 95: ...sembly then detach the rear cover 1 F 3 24 3 2 3 3 Removing the Reader Assembly 0007 8480 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 25 When closing the reader assembly be sure to push in the arm 1 first F 3 26 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect t...

Page 96: ...moving the Left Cover 0007 7016 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 32 F 3 33 3 2 3 6 Removing the Power Supply Assembly 0007 7037 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 34 3 2 3 7 Removing the Face Down Cover 0007 7038 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 ...

Page 97: ...r 3 is not blocking the feed path F 3 38 F 3 39 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 40 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever ...

Page 98: ...crews 3 of the rear cover F 3 42 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 43 4 Close the reader assembly then detach the rear cover 1 F 3 44 3 2 4 3 Removing the Right Cover with the reader assembly intact 0007 6978 1 Free the cable 1 of the reader assembly F 3 45 2 Open the reader assembly 1 and the top cover 2 F 3 46 3 Remove the 2 screws 1 from the side then remove the 3 ...

Page 99: ...Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 49 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 50 4 Close the reader assembly then detach the rear cover 1 F 3 51 3 2 5 3 Removing the Left Cover with the reader assembly intact 0007 6980 1 Disconnect the plug 1 and free the cable 2 of the reader assemb...

Page 100: ...2 6 1 Removing the Rear Cover 0007 8453 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 56 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 57 4 Close the reader assembly then detach the rear cover 1 F 3 58 3 2 6 2 Removing the Reader Assembly 0008 9836 1 Open the reader assembly and remove the left and...

Page 101: ...emove the 6 screws 1 and lift the reader unit to detach F 3 63 3 2 6 3 Removing the Scanner Unit 0008 9843 1 Remove the 2 screws 1 from the back then shift the scanner unit 2 to the back and lift it to detach F 3 64 3 2 6 4 Removing the Upper Right Cover 0007 8490 1 Remove the 2 screws 1 then remove the 5 claws 2 to detach the upper right cover 3 F 3 65 3 2 7 Upper Left Cover 3 2 7 1 Removing the ...

Page 102: ...ut the pin 2 F 3 69 When closing the reader assembly be sure to push in the arm 1 first F 3 70 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 71 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 72 5 Remove the 6 screw...

Page 103: ...t of the machine Whenever you have to replace the fixing assembly be sure to disconnect the power cord first Also be sure to wait unit the fixing assembly has cooled before removing it after disconnecting the power cord F 3 76 3 2 8 2 Removing the Face Up Cover 0011 7553 1 Turn the fixing lever 1 of the fixing assembly 90 deg in the direction of the arrow 2 Remove the 4 claws 2 and detach the face...

Page 104: ...ng the reader assembly be sure to push in the arm 1 first F 3 82 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 83 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 84 5 Remove the 6 screws 1 and lift the reader unit t...

Page 105: ...2 to detach the right cover 3 F 3 88 F 3 89 3 2 9 5 Removing the Power Supply Assembly 0007 8652 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 90 3 2 9 6 Removing the Face Down Cover 0007 8656 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 91 3 2 9 7 Removing the Top Cover 0007 8674 1 Remove the claw 1 and detach the ring gear 2 2 F...

Page 106: ...he top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 96 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the coup...

Page 107: ...ration clutch 4 F 3 101 The connector on the registration clutch side is designed to prevent discon nection If you have to detach the registration clutch be sure to disconnect the connector J113 on the DC controller PCB side 3 2 9 12 Removing the Main Drive Assembly 0007 8831 1 Shift down the drive release lever 1 and remove the gear 2 F 3 102 2 Remove the 2 screws 1 and detach the front sub cover...

Page 108: ...en detach the rear cover 1 F 3 108 3 2 10 2 Removing the Scanner Unit 0007 8057 1 Remove the platen glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 109 4 Open the harness band 1 and free the 2 cables 2 connected to the reader assembly F 3 110 5 Remove the 2 screws 1 from the back then shift the scanner unit 2 to t...

Page 109: ...then detach the rear cover 1 F 3 116 3 2 11 2 Removing the Scanner Unit 0007 8062 1 Remove the platen glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 117 4 Open the harness band 1 and free the 2 cables 2 connected to the reader assembly F 3 118 5 Remove the 2 screws 1 from the back then shift the scanner unit 2 to...

Page 110: ...F 3 123 MEMO Pay attention to the harness 3 as it is connected to the cover 3 Remove the 4 screws 1 and open the NCU unit 2 F 3 124 4 Disconnect the flat cable 1 and the connector 2 F 3 125 5 Remove the screw 1 and disconnect the connector 2 F 3 126 6 Remove the screw 1 and detach the retainer 2 F 3 127 7 Disconnect the connector 1 and remove the lithium board 2 F 3 128 8 Remove the screw 1 and de...

Page 111: ... the cable guide 2 F 3 132 Never remove the SCNT board F 3 133 3 2 12 DCNT Board 3 2 12 1 Removing the Rear Cover 0007 7954 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 134 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 135 4 Close the reader assembly then detach the rear cover 1 2 1 1 2 2 3 1 2 1 ...

Page 112: ...ection of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 139 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 140 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 141 3 2 12 3 Removing the Right Cover 0007 7956 1 Remove the 2 screws 1 of the side then rem...

Page 113: ... the power supply assembly 2 F 3 146 3 2 12 6 Removing the Face Down Cover 0007 7959 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 147 3 2 12 7 Removing the Top Cover 0007 7960 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 148 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3...

Page 114: ...with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 153 3 2 12 8 Removing the Right Frame 0011 6589 1 Remove the 5 screws 1 and detach the right fr...

Page 115: ... 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 158 4 Close the reader assembly then detach the rear cover 1 F 3 159 3 2 13 2 Removing the Scanner Unit 0007 8063 1 Remove the platen glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 160 4 Open the harness band 1 and free the 2 cables 2 connected to t...

Page 116: ...the Rear Cover 0007 8061 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 166 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 167 4 Close the reader assembly then detach the rear cover 1 F 3 168 3 2 14 2 Removing the Scanner Unit 0007 8064 1 Remove the platen glass cover 2 While removing the left and ri...

Page 117: ...ews 2 then detach the modular board 3 F 3 173 3 2 15 Power Supply PCB 3 2 15 1 Removing the Rear Cover 0007 7019 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 174 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 175 4 Close the reader assembly then detach the rear cover 1 F 3 176 3 2 15 2 Removing the...

Page 118: ...1 and disconnect the 2 cables connected to the reader assembly F 3 180 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 181 3 2 15 3 Removing the Power Supply Assembly 0007 7022 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 182 3 2 15 4 Removing the Power Supply PCB 0007 7023 1 Remove the claw 1 and detach the cover 2 F 3 183 2 Disconnect the 3 connectors 1 and r...

Page 119: ...07 8522 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 186 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 187 4 Close the reader assembly then detach the rear cover 1 F 3 188 3 2 16 3 Removing the Reader Assembly 0007 8524 1 Open the reader assembly and remove the left and right E rings 1 then pull o...

Page 120: ...r 0007 8526 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 194 F 3 195 3 2 16 5 Removing the Left Cover 0007 8528 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 196 F 3 197 3 2 16 6 Removing the Power Supply Assembly 0007 8531 1 Remove the 6 screws 1 and detach the power supply assembly 2 2 1 3 2 2 1 1 1...

Page 121: ...ing screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 201 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the paper retainer 3 is not blocking the feed path F 3 202 F 3 203 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever...

Page 122: ... 0011 6591 1 Remove the 5 screws 1 and detach the right frame 2 F 3 206 3 2 16 10 Removing the Left Frame 0007 8538 1 Remove the 4 screws 1 and detach the left frame 2 F 3 207 3 2 16 11 Removing the Cassette Feeder 0007 8539 1 Lift the machine and detach the cassette feeder 1 F 3 208 3 2 16 12 Removing the Shield Plate 0011 6612 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 an...

Page 123: ... of the assembly before shifting down the machine If you must detach the lower case assembly base user to hold it by its bottom so as to avoid injury by the edge of its side plate 3 2 16 15 Removing the Printer Power Supply PCB 0007 8543 1 Remove the 3 screws 1 and disconnect the 4 connectors 2 then detach the cable guide 3 F 3 214 2 Remove the 6 screws 1 and detach the printer power supply PCB 2 ...

Page 124: ...ssembly then detach the rear cover 1 F 3 219 3 2 17 3 Removing the Reader Assembly 0007 8457 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 220 When closing the reader assembly be sure to push in the arm 1 first F 3 221 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconn...

Page 125: ...r 0007 7937 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 225 F 3 226 3 2 17 5 Removing the Left Cover 0007 7938 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 227 F 3 228 3 2 17 6 Removing the Power Supply Assembly 0007 7939 1 Remove the 6 screws 1 and detach the power supply assembly 2 2 1 3 2 2 1 1 1...

Page 126: ...ing screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 232 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the paper retainer 3 is not blocking the feed path F 3 233 F 3 234 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever...

Page 127: ... 0011 6592 1 Remove the 5 screws 1 and detach the right frame 2 F 3 237 3 2 17 10 Removing the Left Frame 0007 7944 1 Remove the 4 screws 1 and detach the left frame 2 F 3 238 3 2 17 11 Removing the Cassette Feeder 0007 7948 1 Lift the machine and detach the cassette feeder 1 F 3 239 3 2 17 12 Removing the Shield Plate 0011 6613 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 an...

Page 128: ... to hold it by its bottom so as to avoid injury by the edge of its side plate 3 2 17 15 Removing the Sub High Voltage Power Supply PCB Unit 0007 7952 1 Remove 2 screws 1 disconnect the connector 2 remove the faston 3 and remove the 4 claws then detach the sub high voltage power supply PCB unit 5 F 3 245 3 2 17 16 Removing the High Voltage Power Supply PCB 0007 7953 1 Remove the 6 claws 1 remove th...

Page 129: ...ssembly then detach the rear cover 1 F 3 250 3 2 18 3 Removing the Reader Assembly 0008 2721 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 251 When closing the reader assembly be sure to push in the arm 1 first F 3 252 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconn...

Page 130: ...r 0008 2724 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 256 F 3 257 3 2 18 5 Removing the Left Cover 0008 2725 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 258 F 3 259 3 2 18 6 Removing the Power Supply Assembly 0008 2727 1 Remove the 6 screws 1 and detach the power supply assembly 2 2 1 3 2 2 1 1 1...

Page 131: ...ing screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 263 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the paper retainer 3 is not blocking the feed path F 3 264 F 3 265 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever...

Page 132: ... 0011 6593 1 Remove the 5 screws 1 and detach the right frame 2 F 3 268 3 2 18 10 Removing the Left Frame 0008 2733 1 Remove the 4 screws 1 and detach the left frame 2 F 3 269 3 2 18 11 Removing the Cassette Feeder 0008 2734 1 Lift the machine and detach the cassette feeder 1 F 3 270 3 2 18 12 Removing the Shield Plate 0011 6614 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 an...

Page 133: ...laser scanner assembly to pre vent intrusion of toner in the optical path of the assembly before shifting down the machine If you must detach the lower case assembly base user to hold it by its bottom so as to avoid injury by the edge of its side plate 3 2 18 15 Removing the Sub High voltage Power Supply Board 0008 2740 1 Remove the connector 1 and the faston 2 and detach the 4 claws 3 remove the ...

Page 134: ...ection of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 282 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 283 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 284 3 2 19 3 Removing the Right Cover 0007 8601 1 Remove the 2 screws 1 of the side then rem...

Page 135: ... the power supply assembly 2 F 3 289 3 2 19 6 Removing the Face Down Cover 0007 8657 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 290 3 2 19 7 Removing the Top Cover 0007 8675 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 291 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3...

Page 136: ...with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 296 3 2 19 8 Removing the Right Frame 0011 6594 1 Remove the 5 screws 1 and detach the right fr...

Page 137: ... of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 300 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 301 4 Close the reader assembly then detach the rear cover 1 F 3 302 3 2 20 2 Removing the Reader Assembly 0007 8577 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 303 When closin...

Page 138: ...connect the 2 cables connected to the reader assembly F 3 306 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 307 3 2 20 3 Removing the Right Cover 0007 8600 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 308 F 3 309 3 2 20 4 Removing the Left Cover 0007 8622 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the r...

Page 139: ... 3 313 3 2 20 7 Removing the Top Cover 0007 8676 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 314 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 315 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that t...

Page 140: ...n low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 319 3 2 20 8 Removing the Left Frame 0007 8809 1 Remove the 4 screws 1 and detach the left frame 2 F 3 320 3 2 20 9 Removing the Fan Duct 0007 8876 1 Disconnect the 4 connectors 1 and remove the 2 claws 2 2 Slide the fan duct 3 in upward direction t...

Page 141: ...laten glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 326 4 Open the harness band 1 and free the 2 cables 2 connected to the reader assembly F 3 327 5 Remove the 2 screws 1 from the back then shift the scanner unit 2 to the back and lift it to detach F 3 328 3 3 2 ADF Unit 3 3 2 1 Removing the Rear Cover 0007 8071...

Page 142: ...e back then shift the scanner unit 2 to the back and lift it to detach F 3 334 3 3 2 3 Removing the SCNT Board Unit 0007 8073 1 Remove the 8 screws 1 from behind the scanner unit and shift up the SCNT board unit 2 F 3 335 2 Open the SCNT board unit then disconnect the 6 connectors 1 and the 3 flat cables 2 F 3 336 3 3 2 4 Removing the ADF Unit 0007 8074 1 Open the ADF unit 1 and detach the stopper...

Page 143: ...ear Cover 0007 8075 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 341 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 342 4 Close the reader assembly then detach the rear cover 1 F 3 343 3 3 3 2 Removing the Scanner Unit 0007 8076 1 Remove the platen glass cover 2 While removing the left and right cl...

Page 144: ... 0007 8079 1 Open the ADF unit 1 and detach the stopper 2 2 Remove the 3 claws 3 and detach the ADF front cover 4 F 3 349 3 Remove the ferrite core 1 from behind the scanner unit then free the harness from the tape 2 F 3 350 4 Open the ADF unit 1 as shown then disengage it starting with the rear and then the front F 3 351 3 3 3 5 Removing the operation Panel 0007 8080 1 Remove the 2 screws 1 and f...

Page 145: ... cover F 3 355 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 356 4 Close the reader assembly then detach the rear cover 1 F 3 357 3 3 4 2 Removing the Scanner Unit 0007 8096 1 Remove the platen glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 358 4 Open the harness band 1 and free the 2 cables 2 c...

Page 146: ... up the SCNT board unit 2 F 3 363 2 Open the SCNT board unit then disconnect the 6 connectors 1 and the 3 flat cables 2 F 3 364 3 3 4 5 Removing the ADF Unit 0007 8098 1 Open the ADF unit 1 and detach the stopper 2 2 Remove the 3 claws 3 and detach the ADF front cover 4 F 3 365 3 Remove the ferrite core 1 from behind the scanner unit then free the harness from the tape 2 F 3 366 4 Open the ADF uni...

Page 147: ... Remove the 2 screws 3 and detach the flat bed motor unit 5 while paying attention to the drive belt 4 of the CCD unit F 3 371 3 3 4 9 Removing the CCD Unit 0007 8104 1 Push the claw 1 and free the core 3 and the flat cable 4 from the claw 2 then disconnect the connector 5 2 Pull out the flat cable 4 from the core 3 and the flat cable retainer 6 by pulling it in the direction of the arrow 3 Lift t...

Page 148: ...e 2 cables 2 connected to the reader assembly F 3 377 5 Remove the 2 screws 1 from the back then shift the scanner unit 2 to the back and lift it to detach F 3 378 3 3 5 3 Removing the SCNT Board Unit 0009 9019 1 Remove the 8 screws 1 from behind the scanner unit and shift up the SCNT board unit 2 F 3 379 2 Open the SCNT board unit then disconnect the 6 connectors 1 and the 3 flat cables 2 F 3 380...

Page 149: ... the line can occur Be sure there is some slack when the ADF unit 2 is fully open F 3 384 3 3 5 6 Removing the Document Pickup Roller Unit 0009 9016 1 Remove the following claws in the order indicated and detach the ADF rear cover 3 claw 1 claw 2 claw 3 F 3 385 2 Remove the 2 screws 1 and detach the harness guide 2 and the Document feed motor unit 3 F 3 386 3 Remove the spring 1 and the screw 2 an...

Page 150: ...e rear cover F 3 392 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 393 4 Close the reader assembly then detach the rear cover 1 F 3 394 3 3 6 2 Removing the Scanner Unit 0009 9001 1 Remove the platen glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 395 4 Open the harness band 1 and free the 2 cabl...

Page 151: ...re 1 from behind the scanner unit then free the harness from the tape 2 F 3 401 4 Open the ADF unit 1 as shown then disengage it starting with the rear and then the front F 3 402 3 3 6 5 Points to Note When Mounting the ADF Unit 0009 9004 Be sure to observe the following when mounting the ADF unit If the harness 1 is too taut a break in the line can occur Be sure there is some slack when the ADF u...

Page 152: ...ing 1 and detach the arm 2 F 3 408 6 Remove the 2 screws 1 and detach the ADF inside cover 2 F 3 409 7 Remove the claw 1 and detach the gear 2 and the bearing 3 F 3 410 8 Remove the claw 1 and detach the gear 2 and the bearing 3 F 3 411 9 Remove the E ring 1 and slide the shaft 2 in the direction of the arrow to detach the feed roller 3 Note When removing the feed roller pay attention to the paral...

Page 153: ...oving the Scanner Unit 0009 9007 1 Remove the platen glass cover 2 While removing the left and right claws detach the hinge cover 1 3 Remove the screw 2 and detach the cable guide 3 F 3 416 4 Open the harness band 1 and free the 2 cables 2 connected to the reader assembly F 3 417 5 Remove the 2 screws 1 from the back then shift the scanner unit 2 to the back and lift it to detach F 3 418 3 3 7 3 R...

Page 154: ...it starting with the rear and then the front F 3 423 3 3 7 5 Points to Note When Mounting the ADF Unit 0009 9010 Be sure to observe the following when mounting the ADF unit If the harness 1 is too taut a break in the line can occur Be sure there is some slack when the ADF unit 2 is fully open F 3 424 3 3 7 6 Removing the Document Pickup Roller Unit 0009 8756 1 Remove the following claws in the ord...

Page 155: ... Reader Unit 3 3 8 1 Removing the Rear Cover 0007 8454 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 431 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 432 4 Close the reader assembly then detach the rear cover 1 F 3 433 3 3 8 2 Removing the Reader Assembly 0007 8455 1 Open the reader assembly and r...

Page 156: ...s band 1 and disconnect the 2 cables connected to the reader assembly F 3 437 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 438 3 3 9 Flatbed Motor Unit 3 3 9 1 Removing the Rear Cover 0007 8082 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 439 3 Open the reader assembly 4 and lift to free the 2 cla...

Page 157: ... 9 3 Removing the SCNT Board Unit 0007 8085 1 Remove the 8 screws 1 from behind the scanner unit and shift up the SCNT board unit 2 F 3 445 2 Open the SCNT board unit then disconnect the 6 connectors 1 and the 3 flat cables 2 F 3 446 3 3 9 4 Removing the ADF Unit 0007 8086 1 Open the ADF unit 1 and detach the stopper 2 2 Remove the 3 claws 3 and detach the ADF front cover 4 F 3 447 3 Remove the fe...

Page 158: ...2 and detach the scanner cover unit 3 F 3 452 3 3 9 7 Removing the Flat Bed Motor Unit 0007 8090 1 Remove the screw 1 and detach the plate 2 2 Remove the 2 screws 3 and detach the flat bed motor unit 5 while paying attention to the drive belt 4 of the CCD unit F 3 453 3 3 10 Document Feed Motor 3 3 10 1 Removing the Rear Cover 0009 9011 1 Disconnect the cable 1 of the power supply assembly 2 Open ...

Page 159: ... back then shift the scanner unit 2 to the back and lift it to detach F 3 459 3 3 10 3 Removing the SCNT Board Unit 0009 9013 1 Remove the 8 screws 1 from behind the scanner unit and shift up the SCNT board unit 2 F 3 460 2 Open the SCNT board unit then disconnect the 6 connectors 1 and the 3 flat cables 2 F 3 461 3 3 10 4 Removing the ADF Unit 0009 9014 1 Open the ADF unit 1 and detach the stoppe...

Page 160: ... 10 6 Removing the Document feed motor 0009 8759 1 Remove the following claws in the order indicated and detach the ADF rear cover 3 claw 1 claw 2 claw 3 F 3 466 2 Remove the 2 screws 1 and detach the harness guide 2 and the Document feed motor unit 3 F 3 467 3 Remove the gear 1 and the 2 screws 2 then detach the Document feed motor 3 F 3 468 3 3 11 DS Sensor 3 3 11 1 Removing the ADF Paper Sensor...

Page 161: ...1 from the guide and remove the screw 2 then detach the sensor unit 3 F 3 474 4 Disconnect the connector 1 and remove the 4 claws 4 then detach the ADF feed sensor 3 F 3 475 3 3 13 Speaker 3 3 13 1 Removing the Rear Cover 0007 8937 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 476 3 Open the reader assembly 4 and li...

Page 162: ... 3 13 3 Removing the SCNT Board Unit 0007 8940 1 Remove the 8 screws 1 from behind the scanner unit and shift up the SCNT board unit 2 F 3 482 2 Open the SCNT board unit then disconnect the 6 connectors 1 and the 3 flat cables 2 F 3 483 3 3 13 4 Removing the Speaker 0007 9118 1 Remove the 2 screws 1 and detach the speaker cover 2 then detach the speaker 3 F 3 484 3 4 LASER EXPOSURE SYSTEM 3 4 1 La...

Page 163: ...t the pin 2 F 3 488 When closing the reader assembly be sure to push in the arm 1 first F 3 489 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 490 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 491 5 Remove the 6 sc...

Page 164: ...2 to detach the right cover 3 F 3 495 F 3 496 3 4 1 5 Removing the Power Supply Assembly 0007 7968 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 497 3 4 1 6 Removing the Face Down Cover 0007 7970 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 498 3 4 1 7 Removing the Top Cover 0007 7971 1 Remove the claw 1 and detach the ring gear 2...

Page 165: ...the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 503 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the co...

Page 166: ...ve Unit 3 5 1 1 Removing the Rear Cover 0007 8555 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 507 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 508 4 Close the reader assembly then detach the rear cover 1 F 3 509 3 5 1 2 Removing the Reader Assembly 0007 8574 1 Open the reader assembly and remove...

Page 167: ...2 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 513 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 514 3 5 1 3 Removing the Right Cover 0007 8593 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 515 F 3 516 3 5 1 4 Removing the Left Cover 0007 8617 1 Remove the 2 screws 1 from the side then rem...

Page 168: ...3 520 3 5 1 7 Removing the Top Cover 0007 8677 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 521 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 522 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the...

Page 169: ...low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 526 3 5 1 8 Removing the Right Frame 0011 6595 1 Remove the 5 screws 1 and detach the right frame 2 F 3 527 3 5 1 9 Removing the Shield Plate 0011 6616 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 and detach the shielding plate 3...

Page 170: ...Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 531 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 532 4 Close the reader assembly then detach the rear cover 1 F 3 533 3 5 2 2 Removing the Reader Assembly 0007 8584 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin ...

Page 171: ...sconnect the 2 cables connected to the reader assembly F 3 537 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 538 3 5 2 3 Removing the Right Cover 0007 8608 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 539 F 3 540 3 5 2 4 Removing the Left Cover 0007 8627 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the ri...

Page 172: ...3 544 3 5 2 7 Removing the Top Cover 0007 8678 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 545 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 546 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the...

Page 173: ... low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 550 3 5 2 8 Removing the Right Frame 0011 6596 1 Remove the 5 screws 1 and detach the right frame 2 F 3 551 3 5 2 9 Removing the Shield Plate 0011 6617 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 and detach the shielding plate ...

Page 174: ...0007 8561 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 556 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 557 4 Close the reader assembly then detach the rear cover 1 F 3 558 3 5 3 2 Removing the Reader Assembly 0007 8573 1 Open the reader assembly and remove the left and right E rings 1 then pull ...

Page 175: ...sconnect the 2 cables connected to the reader assembly F 3 562 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 563 3 5 3 3 Removing the Right Cover 0007 8603 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 564 F 3 565 3 5 3 4 Removing the Left Cover 0007 8624 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the ri...

Page 176: ...3 569 3 5 3 7 Removing the Top Cover 0007 8679 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 570 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 571 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the...

Page 177: ... low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 575 3 5 3 8 Removing the Right Frame 0011 6597 1 Remove the 5 screws 1 and detach the right frame 2 F 3 576 3 5 3 9 Removing the Shield Plate 0011 6618 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 and detach the shielding plate ...

Page 178: ...80 2 Remove the 2 screws 1 and detach the front sub cover 2 F 3 581 When mounting the main drive assembly be sure to fit the gear 2 as shown with the drive release lever 1 in down position i e with drive engaged At this time be sure that the position of the gear is correct so that it is fully engaged with the gear of the drive release lever F 3 582 3 Disconnect the 3 connectors 1 and remove the 8 ...

Page 179: ...tach F 3 587 3 5 3 16 Removing the Laser Scanner Unit Base 0007 8849 1 Disconnect the 6 connectors 1 of the DC controller board F 3 588 2 Free the harness 1 from the harness guide 2 3 Disconnect the connector 3 and remove the 8 screws 4 then detach the laser scanner base 5 F 3 589 3 5 3 17 Removing the Developing Rotary Assembly 0007 8850 1 Remove the 2 screws 1 2 Push in the top 2 of the rotary h...

Page 180: ... that the 2 tips of the rotary holder are fully fitted to the frame of the machine 3 5 4 Engaging Motor 3 5 4 1 Removing the Rear Cover 0007 8560 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 594 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 595 4 Close the reader assembly then detach the rear cove...

Page 181: ...9 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 600 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 601 3 5 4 3 Removing the Right Cover 0007 8602 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 602 F 3 603 3 5 4 4 Removing the Left Cover 0007 8623 1 Remove the 2 screws 1 from the side then rem...

Page 182: ...3 607 3 5 4 7 Removing the Top Cover 0007 8680 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 608 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 609 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the...

Page 183: ...ut the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 613 3 5 4 8 Removing the Left Frame 0007 8811 1 Remove the 4 screws 1 and detach the left frame 2 F 3 614 3 5 4 9 Removing the Shift Motor 0007 8880 1 Disconnect the connector 1 and remove the 2 screws 2 2 Slide the shift motor 3 in upward direction to detach F 3 615 3 5 5 Developing Rotary Motor ...

Page 184: ...t the pin 2 F 3 619 When closing the reader assembly be sure to push in the arm 1 first F 3 620 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 621 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 622 5 Remove the 6 sc...

Page 185: ...2 to detach the right cover 3 F 3 626 F 3 627 3 5 5 5 Removing the Power Supply Assembly 0007 8643 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 628 3 5 5 6 Removing the Face Down Cover 0007 8664 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 629 3 5 5 7 Removing the Top Cover 0007 8681 1 Remove the claw 1 and detach the ring gear 2...

Page 186: ...the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 634 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the co...

Page 187: ...ve the 2 screws 2 F 3 638 2 Disconnect the connector 1 and remove the 3 screws 2 then detach the rotary drive assembly 3 F 3 639 Be sure to tighten the self tapping screw used to secure the rotary drive as sembly only at the end of the work 3 5 5 11 Removing the Developing Rotary Motor 0007 8870 1 Remove the 2 screws 1 and detach the toner cartridge motor 2 from the rotary drive assembly F 3 640 3...

Page 188: ...eft and right E rings 1 then pull out the pin 2 F 3 644 When closing the reader assembly be sure to push in the arm 1 first F 3 645 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 646 4 Open the harness band 1 and disconnect the 2 cables connected to the reade...

Page 189: ...2 to detach the right cover 3 F 3 651 F 3 652 3 5 6 5 Removing the Power Supply Assembly 0007 8644 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 653 3 5 6 6 Removing the Face Down Cover 0007 8665 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 654 3 5 6 7 Removing the Top Cover 0007 8682 1 Remove the claw 1 and detach the ring gear 2...

Page 190: ... the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 659 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the c...

Page 191: ... 663 2 Disconnect the connector 1 and remove the 3 screws 2 then detach the rotary drive assembly 3 F 3 664 Be sure to tighten the self tapping screw used to secure the rotary drive as sembly only at the end of the work 3 5 6 11 Removing the Toner Cartridge Motor 0007 8873 1 Disconnect the connector 1 and remove the screw 2 then detach the toner cartridge motor 3 from the rotary drive assembly F 3...

Page 192: ... Rear Cover 0007 8551 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 669 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 670 4 Close the reader assembly then detach the rear cover 1 F 3 671 3 5 7 2 Removing the Reader Assembly 0007 8569 1 Open the reader assembly and remove the left and right E rings ...

Page 193: ...sconnect the 2 cables connected to the reader assembly F 3 675 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 676 3 5 7 3 Removing the Right Cover 0007 8589 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 677 F 3 678 3 5 7 4 Removing the Left Cover 0007 8612 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the ri...

Page 194: ... 3 682 3 5 7 7 Removing the Top Cover 0007 8683 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 683 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 684 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that th...

Page 195: ...n low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 688 3 5 7 8 Removing the Inside Cover 0007 8856 1 Remove the 2 claws 1 and detach the inside cover 2 F 3 689 3 5 7 9 Removing the Dust Blocking Cover 0007 8858 1 Remove the claw 1 and detach the dust blocking cover 2 F 3 690 3 5 7 10 Removing the De...

Page 196: ...over 1 F 3 694 3 5 8 2 Removing the Reader Assembly 0007 8570 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 695 When closing the reader assembly be sure to push in the arm 1 first F 3 696 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to...

Page 197: ...emoving the Left Cover 0007 8613 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 702 F 3 703 3 5 8 5 Removing the Power Supply Assembly 0007 8646 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 704 3 5 8 6 Removing the Face Down Cover 0007 8667 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach ...

Page 198: ...r 3 is not blocking the feed path F 3 708 F 3 709 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 710 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lev...

Page 199: ...he reader assembly 1 and the top cover 2 F 3 714 2 Remove the 2 screws 1 and detach the transfer inlet guide 2 F 3 715 3 Remove the 2 claws 1 of the left and right bushings then detach the transfer charging roller 2 F 3 716 3 Remove the gear 1 and the bushing 2 then detach the transfer charging roller F 3 717 When replacing the transfer charging roller be sure to hold it by its shaft 1 and its bus...

Page 200: ...lose the reader assembly then detach the rear cover 1 F 3 721 3 5 10 2 Removing the Reader Assembly 0007 8568 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 722 When closing the reader assembly be sure to push in the arm 1 first F 3 723 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness ba...

Page 201: ...er 0007 8588 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 727 F 3 728 3 5 10 4 Removing the Left Cover 0007 8611 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 729 F 3 730 3 5 10 5 Removing the Power Supply Assembly 0007 8647 1 Remove the 6 screws 1 and detach the power supply assembly 2 2 1 3 2 2 1 1 ...

Page 202: ...ding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 734 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that the paper retainer 3 is not blocking the feed path F 3 735 F 3 736 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release leve...

Page 203: ...the registration clutch 4 F 3 740 The connector on the registration clutch side is designed to prevent discon nection If you have to detach the registration clutch be sure to disconnect the connector J113 on the DC controller PCB side 3 5 10 10 Removing the Main Drive Assembly 0007 8833 1 Shift down the drive release lever 1 and remove the gear 2 F 3 741 2 Remove the 2 screws 1 and detach the fron...

Page 204: ...0007 8549 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 746 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 747 4 Close the reader assembly then detach the rear cover 1 F 3 748 3 5 11 2 Removing the Reader Assembly 0007 8587 1 Open the reader assembly and remove the left and right E rings 1 then pull...

Page 205: ...connect the 2 cables connected to the reader assembly F 3 752 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 753 3 5 11 3 Removing the Right Cover 0007 8586 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 754 F 3 755 3 5 11 4 Removing the Left Cover 0007 8610 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the r...

Page 206: ... 3 759 3 5 11 7 Removing the Top Cover 0007 8686 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 760 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 761 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that t...

Page 207: ...ar tridge and to suffer damage F 3 765 3 5 11 8 Removing the Right Frame 0011 6601 1 Remove the 5 screws 1 and detach the right frame 2 F 3 766 3 5 11 9 Removing the Registration Clutch 0007 8826 1 Disconnect the connector 1 and open the harness band 2 2 Remove the E ring 3 and detach the registration clutch 4 F 3 767 The connector on the registration clutch side is designed to prevent discon nect...

Page 208: ... position of the gear is correct so that it is fully engaged with the gear of the drive release lever F 3 770 3 Disconnect the 3 connectors 1 and remove the 8 screws 2 then detach the main drive assembly 3 F 3 771 3 5 11 11 Removing the Rotary Drive Assembly 0007 8836 1 Disconnect the 4 connectors 1 and remove the 2 screws 2 F 3 772 2 Disconnect the connector 1 and remove the 3 screws 2 then detac...

Page 209: ...etach F 3 775 3 5 11 14 Removing the Laser Scanner Unit Base 0007 8851 1 Disconnect the 6 connectors 1 of the DC controller board F 3 776 2 Free the harness 1 from the harness guide 2 3 Disconnect the connector 3 and remove the 8 screws 4 then detach the laser scanner base 5 F 3 777 3 5 11 15 Removing the Developing Rotary Assembly 0007 8852 1 Remove the 2 screws 1 2 Push in the top 2 of the rotar...

Page 210: ...holder are fully fitted to the frame of the machine 3 5 11 16 Removing the Developing Rotary Toner Level Detection PCB 0007 8854 1 Remove the 3 claws 1 and detach the developing rotary toner level detection PCB 2 from the developing rotary assembly F 3 782 3 5 12 Toner Cartridge Motor 3 5 12 1 Removing the Rear Cover 0007 8556 1 Disconnect the cable 1 of the power supply assembly 2 Open the face u...

Page 211: ...ds 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 788 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 789 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 790 3 5 12 3 Removing the Right Cover 0007 8594 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 791 F 3 792 3 5 12 4 Remo...

Page 212: ...h F 3 796 3 5 12 7 Removing the Top Cover 0007 8687 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 797 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 798 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure tha...

Page 213: ...ow position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 802 3 5 12 8 Removing the Right Frame 0011 6602 1 Remove the 5 screws 1 and detach the right frame 2 F 3 803 3 5 12 9 Removing the Shield Plate 0011 6621 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 and detach the shielding plate ...

Page 214: ... 3 6 PICKUP AND FEEDING SYSTEM 3 6 1 Cassette Pickup Roller 3 6 1 1 Removing the Cassettes 0007 7056 1 Hold the grip and take out the cassette 3 6 1 2 Removing the Rear Cover 0007 7057 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 808 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 809 4 Close the re...

Page 215: ...Lift the release knob 1 slightly and turn it bout 90 deg toward the rear then slide the release knob fully F 3 816 4 Slide the pickup roller 1 fully then slide the pickup roller at an angle in downward direction to detach F 3 817 3 6 2 Cassette Paper Sensor 3 6 2 1 Removing the Cassettes 0007 8545 1 Hold the grip and take out the cassette 3 6 2 2 Removing the Rear Cover 0007 8562 1 Disconnect the ...

Page 216: ...ing the reader assembly be sure to push in the arm 1 first F 3 822 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 823 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 824 5 Remove the 6 screws 1 and lift the reader un...

Page 217: ...2 to detach the right cover 3 F 3 828 F 3 829 3 6 2 6 Removing the Power Supply Assembly 0007 8649 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 830 3 6 2 7 Removing the Face Down Cover 0007 8671 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 831 3 6 2 8 Removing the Top Cover 0007 8688 1 Remove the claw 1 and detach the ring gear 2...

Page 218: ... the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 836 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the c...

Page 219: ...ne and detach the cassette feeder 1 F 3 840 3 6 2 12 Removing the Cassette Paper Sensor 0007 8882 1 Remove the 2 claws 1 F 3 841 2 Disconnect the connector 1 and detach the paper sensor 2 F 3 842 3 6 3 Cassette Feed Sensor 3 6 3 1 Removing the Cassettes 0007 8546 1 Hold the grip and take out the cassette 3 6 3 2 Removing the Rear Cover 0007 8563 1 Disconnect the cable 1 of the power supply assembl...

Page 220: ...ut the pin 2 F 3 846 When closing the reader assembly be sure to push in the arm 1 first F 3 847 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 848 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 849 5 Remove the 6 s...

Page 221: ...2 to detach the right cover 3 F 3 853 F 3 854 3 6 3 6 Removing the Power Supply Assembly 0007 8650 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 855 3 6 3 7 Removing the Face Down Cover 0007 8672 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 856 3 6 3 8 Removing the Top Cover 0007 8689 1 Remove the claw 1 and detach the ring gear 2...

Page 222: ... the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 861 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the c...

Page 223: ...me 2 F 3 864 3 6 3 11 Removing the Cassette Feeder 0007 8883 1 Lift the machine and detach the cassette feeder 1 F 3 865 3 6 3 12 Removing the Cassette Feed Sensor 0007 8884 1 Remove the claw 1 and detach the sensor cover 2 F 3 866 2 Remove the 2 claws 1 and detach the sensor cover 2 F 3 867 3 Remove the 2 claws 1 F 3 868 4 Disconnect the connector 1 and detach the cassette feed sensor 2 1 2 1 1 2...

Page 224: ... reader assembly then detach the rear cover 1 F 3 872 3 6 4 3 Removing the Reader Assembly 0007 8484 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 873 When closing the reader assembly be sure to push in the arm 1 first F 3 874 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and...

Page 225: ...emoving the Left Cover 0007 7066 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 880 F 3 881 3 6 4 6 Removing the Power Supply Assembly 0007 7067 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 882 3 6 4 7 Removing the Face Down Cover 0007 7069 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach ...

Page 226: ...r 3 is not blocking the feed path F 3 886 F 3 887 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 888 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lev...

Page 227: ...4 12 Removing the Cassette Pickup Solenoid 0007 7098 1 Remove the 3 claws 1 and slide the PCB cover 2 to detach F 3 893 2 Remove the screw 1 and detach the dust blocking plate 2 F 3 894 3 Disconnect the connector 1 4 Remove the screw 2 and detach the cassette pickup solenoid 3 F 3 895 3 6 5 Cassette Separation Pad 3 6 5 1 Removing the Cassette 0007 6965 1 Hold the grip and take out the cassette 3 ...

Page 228: ...over 2 Remove the claw 1 and detach the pickup roller protective cover 2 F 3 899 3 Pick the release claw 1 and slide the bush 2 in the direction of the arrow F 3 900 4 Pick the release claw 1 and slide the manual feed pickup roller 2 to the right to detach F 3 901 3 6 7 Manual Pickup Solenoid 3 6 7 1 Removing the Rear Cover 0007 7107 1 Disconnect the cable 1 of the power supply assembly 2 Open the...

Page 229: ...ing the reader assembly be sure to push in the arm 1 first F 3 906 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 907 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 908 5 Remove the 6 screws 1 and lift the reader un...

Page 230: ...2 to detach the right cover 3 F 3 912 F 3 913 3 6 7 5 Removing the Power Supply Assembly 0007 7112 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 914 3 6 7 6 Removing the Face Down Cover 0007 7113 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 915 3 6 7 7 Removing the Top Cover 0007 7114 1 Remove the claw 1 and detach the ring gear 2...

Page 231: ... the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 920 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the c...

Page 232: ...stration clutch 4 F 3 925 The connector on the registration clutch side is designed to prevent discon nection If you have to detach the registration clutch be sure to disconnect the connector J113 on the DC controller PCB side 3 6 7 12 Removing the Main Drive Assembly 0007 9072 1 Shift down the drive release lever 1 and remove the gear 2 F 3 926 2 Remove the 2 screws 1 and detach the front sub cov...

Page 233: ... F 3 930 4 Disconnect the connector 1 and remove the screw 2 then detach the manual feed pickup solenoid 3 F 3 931 3 6 8 Manual Separation Roller 3 6 8 1 Removing the Cassettes 0007 8510 1 Hold the grip and take out the cassette 3 6 8 2 Removing the Rear Cover 0007 8511 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 ...

Page 234: ...top it becomes easy F 3 938 3 6 8 4 Removing the Left Cover with the reader assembly intact 0007 8513 1 Disconnect the plug 1 and free the cable 2 of the reader assembly from the guide F 3 939 2 Open the reader assembly 1 and the top cover 2 F 3 940 3 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the right cover 3 MEMO It is difficult to release three claws 2 If you release...

Page 235: ... 945 3 6 8 7 Removing the Manual Feed Pickup Separation Pad 0007 8516 1 Remove the screw 1 and detach the manual feed pickup separation pad 2 F 3 946 3 6 9 Registration Detection PCB 3 6 9 1 Removing the Fixing Assembly 0008 1827 1 Turn the lever 1 of the fixing assembly 90 deg in the direction of the arrow 2 While holding the grip 2 slide out the fixing assembly 3 toward the front and out of the ...

Page 236: ...g it after disconnecting the power cord F 3 948 3 6 9 3 Removing the Rear Cover 0007 8548 1 Disconnect the cable 1 of the power supply assembly 2 Open the face up cover 2 and remove the 4 screws 3 of the rear cover F 3 949 3 Open the reader assembly 4 and lift to free the 2 claws 5 F 3 950 4 Close the reader assembly then detach the rear cover 1 F 3 951 3 6 9 4 Removing the Reader Assembly 0007 85...

Page 237: ...sconnect the 2 cables connected to the reader assembly F 3 955 5 Remove the 6 screws 1 and lift the reader unit to detach F 3 956 3 6 9 5 Removing the Right Cover 0007 8585 1 Remove the 2 screws 1 of the side then remove the 3 claws 2 to detach the left cover 3 F 3 957 F 3 958 3 6 9 6 Removing the Left Cover 0007 8609 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the ri...

Page 238: ... 3 962 3 6 9 9 Removing the Top Cover 0008 2393 1 Remove the claw 1 and detach the ring gear 2 2 Free the link lever 3 from the shaft 4 F 3 963 3 Remove the 3 binding screws 1 and 2 TP screws 2 then disconnect the connector 3 and detach the top cover 4 F 3 964 When attaching the top cover be sure to match its 2 positioners 1 and the 2 cut offs 2 of the face down sub cover while making sure that th...

Page 239: ... the drive release lever is in low position i e with drive engaged it forces out the coupling 2 causing the coupling to interface with the drum car tridge and to suffer damage F 3 968 3 6 9 10 Removing the Right Frame 0011 6606 1 Remove the 5 screws 1 and detach the right frame 2 F 3 969 3 6 9 11 Removing the Left Frame 0007 8807 1 Remove the 4 screws 1 and detach the left frame 2 F 3 970 3 6 9 12...

Page 240: ...lower case assembly 3 F 3 976 When you shift down the machine be sure to take care to avoid injury by the edge of the side plate Also be sure to hold it by its grip segment Be sure to place a cushioning material g towel on the work table to protect the protrusions of the machine from damage Moreover be sure to tape the opening of the laser scanner assembly to pre vent intrusion of toner in the opt...

Page 241: ...3 981 3 6 10 2 Removing the Reader Assembly 0007 8487 1 Open the reader assembly and remove the left and right E rings 1 then pull out the pin 2 F 3 982 When closing the reader assembly be sure to push in the arm 1 first F 3 983 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the rea...

Page 242: ...emoving the Left Cover 0007 8005 1 Remove the 2 screws 1 from the side then remove the 3 claws 2 to detach the right cover 3 F 3 989 F 3 990 3 6 10 5 Removing the Power Supply Assembly 0007 8007 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 991 3 6 10 6 Removing the Face Down Cover 0007 8009 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detac...

Page 243: ...er 3 is not blocking the feed path F 3 995 F 3 996 When attaching the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 997 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release le...

Page 244: ...istration clutch 4 F 3 1002 The connector on the registration clutch side is designed to prevent discon nection If you have to detach the registration clutch be sure to disconnect the connector J113 on the DC controller PCB side 3 6 10 12 Removing the Main Drive Assembly 0007 8947 1 Shift down the drive release lever 1 and remove the gear 2 F 3 1003 2 Remove the 2 screws 1 and detach the front sub...

Page 245: ...nit the fixing assembly has cooled before removing it after disconnecting the power cord F 3 1008 3 7 2 Fixing Film Unit 3 7 2 1 Removing the Fixing Assembly 0011 7849 1 Turn the lever 1 of the fixing assembly 90 deg in the direction of the arrow 2 While holding the grip 2 slide out the fixing assembly 3 toward the front and out of the machine Whenever you have to replace the fixing assembly be su...

Page 246: ...n remove the 2 claws 2 and the boss 3 to detach the fixing upper cover 4 F 3 1013 Make sure that the 2 springs are fitted onto the bosses on the fixing upper cover when reassembling the cover See the figure for the correct positions of the boss and springs shown on the left F 3 1014 6 Remove the upper separation guide 1 7 Remove the 2 releasing levers 2 8 Slide the pressure plate 4 in upward direc...

Page 247: ... 0011 7853 1 Turn the lever 1 of the fixing assembly 90 deg in the direction of the arrow 2 While holding the grip 2 slide out the fixing assembly 3 toward the front and out of the machine Whenever you have to replace the fixing assembly be sure to disconnect the power cord first Also be sure to wait unit the fixing assembly has cooled before removing it after disconnecting the power cord F 3 1021...

Page 248: ...sitions of the boss and springs shown on the left F 3 1026 6 Remove the upper separation guide 1 7 Remove the 2 releasing levers 2 8 Slide the pressure plate 4 in upward direction and remove the 2 bosses 3 9 Remove the pressure plate 4 from the fixing assembly F 3 1027 10 Disconnect the connector 1 and free the cable 2 from the clamp 3 11 Remove the screw 4 F 3 1028 12 Remove the cable 1 from the ...

Page 249: ...While holding the grip 2 slide out the fixing assembly 3 toward the front and out of the machine Whenever you have to replace the fixing assembly be sure to disconnect the power cord first Also be sure to wait unit the fixing assembly has cooled before removing it after disconnecting the power cord F 3 1034 3 7 4 2 Removing the Face Up Cover 0011 7857 1 Turn the fixing lever 1 of the fixing assemb...

Page 250: ...ing the reader assembly be sure to push in the arm 1 first F 3 1040 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 1041 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 1042 5 Remove the 6 screws 1 and lift the reader...

Page 251: ...2 to detach the right cover 3 F 3 1046 F 3 1047 3 7 5 5 Removing the Power Supply Assembly 0007 8889 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 1048 3 7 5 6 Removing the Face Down Cover 0007 8890 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 1049 3 7 5 7 Removing the Top Cover 0007 8891 1 Remove the claw 1 and detach the ring ge...

Page 252: ...g the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 1054 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the...

Page 253: ... 1 from the connector 2 Remove the 6 screws 2 and detach the shielding plate 3 F 3 1059 3 7 5 12 Removing the Inside Cover 0007 8898 1 Remove the 2 claws 1 and detach the inside cover 2 F 3 1060 3 7 5 13 Removing the Registration Clutch 0007 8899 1 Disconnect the connector 1 and open the harness band 2 2 Remove the E ring 3 and detach the registration clutch 4 F 3 1061 The connector on the registr...

Page 254: ...s correct so that it is fully engaged with the gear of the drive release lever F 3 1064 3 Disconnect the 3 connectors 1 and remove the 8 screws 2 then detach the main drive assembly 3 F 3 1065 3 7 5 15 Removing the Toner Tray 0007 8901 1 Remove the 2 claws 1 and detach the toner tray 2 F 3 1066 3 7 5 16 Removing the Fixing Front Paper Sensor Spacer 0007 8902 1 Remove the fixing front paper sensor ...

Page 255: ... Moreover be sure to tape the opening of the laser scanner assembly to pre vent intrusion of toner in the optical path of the assembly before shifting down the machine If you must detach the lower case assembly base user to hold it by its bottom so as to avoid injury by the edge of its side plate 3 7 5 19 Removing the Fixing Front Paper Sensor 0007 8906 1 Bend over the plastic sheet 1 2 Remove the...

Page 256: ...t the pin 2 F 3 1077 When closing the reader assembly be sure to push in the arm 1 first F 3 1078 2 Open the left and right claws in the direction of the arrows and detach the hinge cover 1 3 Free the 2 harness bands 1 and disconnect the 2 cables 2 connected to the reader assembly F 3 1079 4 Open the harness band 1 and disconnect the 2 cables connected to the reader assembly F 3 1080 5 Remove the ...

Page 257: ...2 to detach the right cover 3 F 3 1084 F 3 1085 3 7 6 5 Removing the Power Supply Assembly 0007 8651 1 Remove the 6 screws 1 and detach the power supply assembly 2 F 3 1086 3 7 6 6 Removing the Face Down Cover 0007 8673 1 Remove the 2 screws 1 and slide the face down cover 2 in downward direction to detach F 3 1087 3 7 6 7 Removing the Top Cover 0007 8690 1 Remove the claw 1 and detach the ring ge...

Page 258: ...g the top cover be sure to fit the link lever 2 while keeping the drive release lever 1 in up position i e with drive disengaged F 3 1092 If you are fitting the drum cartridge in the machine with the top cover re moved be sure to do so with the drive release lever 1 fully in up position i e with drive disengaged If the drive release lever is in low position i e with drive engaged it forces out the...

Page 259: ...4 3 7 6 9 Removing the Shield Plate 0011 6625 1 Free the flat cable 1 from the connector 2 Remove the 6 screws 2 and detach the shielding plate 3 F 3 1095 3 7 6 10 Removing the Fixing Motor 0011 7566 1 Unplug the 1 connector 1 and remove the 4 screws 2 2 Remove the fixing motor 3 from main unit F 3 1096 1 2 1 1 2 2 2 3 1 2 2 3 1 ...

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Page 261: ...Chapter 4 MAINTENANCE AND INSPECTION ...

Page 262: ......

Page 263: ... 4 1 4 Drum Cartridge 4 1 4 1 5 Mylar Sheet 4 1 4 1 6 Pressure Roller fixing assembly 4 1 4 1 7 Density Sensor ITB Home Position Sensor 4 2 4 2 Periodically Replaced Parts 4 2 4 2 1 Periodic Replacement Parts 4 2 4 3 Consumables 4 2 4 3 1 Expected Service Life of Consumable Parts 4 2 4 4 Periodical Service 4 3 4 4 1 Periodic Service 4 3 ...

Page 264: ......

Page 265: ... and then wipe the glass dry with another cloth F 4 2 4 1 3 Toner Cartridge 0008 1734 Replace it as necessary 4 1 4 Drum Cartridge 0008 1735 Replace it as necessary 4 1 5 Mylar Sheet 0008 1736 If necessary clean the mylar sheet with a firmly squeezed wet soft cloth F 4 3 4 1 6 Pressure Roller fixing assembly 0008 1737 The following is a procedure for cleaning the pressure roller 1 Open the multife...

Page 266: ...TB home position detection sensor is not clean In these cases clean the detection windows according to the procedures shown above 4 2 Periodically Replaced Parts 4 2 1 Periodic Replacement Parts 0003 0867 No parts require periodic replacement in this printer 4 3 Consumables 4 3 1 Expected Service Life of Consumable Parts 0011 6423 Some parts of the machine are likely to require replacement once or...

Page 267: ...Chapter 4 4 3 4 4 Periodical Service 4 4 1 Periodic Service 0003 0865 The printer has no parts that require periodic servicing ...

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Page 269: ...Chapter 5 TROUBLESHOOTING ...

Page 270: ......

Page 271: ...e Switches 5 6 5 5 1 2 Service Data Setting 5 6 5 5 1 3 Service Data Entry Method 5 7 5 5 2 Service Soft Switch Settings SSSW 5 7 5 5 2 1 Outline 5 7 5 5 2 1 1 Explanation of SSSW 5 7 5 5 2 2 SSSW SW14 5 7 5 5 2 2 1 Details of Bit 0 and Bit 1 5 7 5 5 2 3 SSSW SW18 5 8 5 5 2 3 1 List of Functions 5 8 5 5 2 3 2 Details of Bit 0 5 8 5 5 2 3 3 Details of Bit 1 5 8 5 5 3 Data Initialization Mode CLEAR ...

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Page 273: ...tem four sided mirror reflective mirror lens etc will result in a light print image b As the photosensitive drum is cold the resistance of the photoconductive layer is high this will lead to incorrect contrast If condensation appears either wipe the parts with dry cloth or leave the printer on for 10 to 20 minutes If the toner cartridges are opened soon after being moved from a cold room to a warm...

Page 274: ... 3 Select face up delivery 4 Press the test print switch 5 Open the delivery door immediately after the leading edge of the print has come out to the face up tray Take out the print from the printer after 10 seconds from turning off the power switch 6 Measure the width of the glossy band across the paper and check that it meets the following requirements shown in figure Center a 6 to 7 5 mm Differ...

Page 275: ...Desoldering wick Lint free paper Oiler Plastic jar CK 0329 CK 0330 CK 0336 CK 0349 CK 0351 1 5 mm dia 1 mm 1 5 mm 500SH PKG 30cc 30cc 31 Digital multi measure FY9 2032 No Name Use Remarks 1 Alcohol Cleaning plastic note rubber metal oil and toner stains Flammable keep away from flame Purchase locally 2 Lubricating oil Apply between gear and shaft Tool No CK 8003 100 ml bottle 3 Lubricant Apply to ...

Page 276: ... J302 J201 J112 J119 J108 J115 J114 J106 J137 J705 J105 J104 J714 J122 J702 J136 J133 J134 J135 J113 J505 J403 J716 J717 J2304 J2302 J220 J230 J2303 JFAN1 JAMTR1 JBMTR1 JSPK1 JSNS1 JOP702 JOP701 JEROM1 JDBAG1 JUSB1 JLAN1 JJTAG1 J722 J723 J13 J15 J2308 J2305 ...

Page 277: ...rror codes in this Manual are limited to SYSTEM ERROR E numeral For descriptions on numeral see the separately available G3 G4 Facsimile Error Code Service Handbook The following is a list of service error codes SYSTEM ERROR E numeral T 5 3 Code Main cause description Remedial action E000 fixing assembly faulty start up open circuit in the main thermistor Check the connector of the fixing film uni...

Page 278: ...se SYSTEM Do not use COUNTER Counter indication Count data such as the read and print are displayed REPORT Report output Use it to output reports on various service data E010 main motor fault Check the connector of the main motor Replace the main motor replace the DCNT Borad E021 developing rotary motor fault Check the connector of the developing rotary motor Replace the developing rotary motor Re...

Page 279: ...line 5 5 2 1 1 Explanation of SSSW 0008 1883 The items registered and set by each of these switches comprise 8 bit switches The figure below shows which numbers are assigned to which bits Each bit has a value of either 0 or 1 F 5 9 Below are examples showing how to read bit switch tables F 5 10 5 5 2 2 SSSW SW14 5 5 2 2 1 Details of Bit 0 and Bit 1 0008 1885 Set the type of document scanning size ...

Page 280: ... goes back to STANDARD when CLEAR ALL is executed there is a need to change the TYPE setting to conform to the communications standards of a specific country region 5 5 4 Test Mode TEST 5 5 4 1 Overview 5 5 4 1 1 Test Mode Overview 0008 1953 The following test modes are available from the menu on the display D RAM tests Writes data to DRAM image storage areas and reads that data to check operation...

Page 281: ... print test if the printing was normal copy a document If there is any defect in the copied image there is a defect in the scan section 5 5 4 4 Modem Test 5 5 4 4 1 Modem Tests 0008 1981 The Modem Test menu is selected by pressing the numeric key 4 from the test mode menu These tests test modem and NCU transmission and reception The modem tests check whether signals are sent correctly from the mod...

Page 282: ... from the MODEM test menu The V 34 G3 signals below are sent from the modem using the modular jack and the speaker by pressing the B W Start key The Baud rate can be changed with the numeric keys and the Speed can be changed with the cursor keys T 5 9 T 5 10 Modem test type Overview Frequency test The modem sends tonal signals from the modular jack and the speaker G3 signal transmission test The m...

Page 283: ...ting correctly Operation panel test Tests whether the button switches on the control panel are operating correctly Line signal reception test Tests whether the NCU board signal sensor and frequency counter are operating correctly Cursor key Speed Pressing the 1 key Pressing the 2 key DS Document sensor on of DES Document edge sensor on of HPS Home position sensor on of JAM Paper delivery jam detec...

Page 284: ... after the LED lamp test is done In this test a character disappears when its operation key is pressed The list of characters and their operation keys is as follows Check to make sure at this time that all characters properly disappear when their operation keys are pressed T 5 12 One Touch Dial Key Test The one touch dial key test starts once all characters disappear in the operation key test The ...

Page 285: ...isplay has gone out When a key is pressed the corresponding character goes out When a one touch speed dialing key is pressed the corresponding letter goes out 0123456789 ABCDEDFG HIJKLMNOPQRS 0123456789 0123456 yyyyyy WORLD yyy Press B W Start key Press B W Start key Press B W Start key Press B W Start key H pattern displayed All LCD dots displayed Press the Stop Reset key to end the test ...

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Page 287: ...Chapter 6 APPENDIX ...

Page 288: ......

Page 289: ...Solenid 6 1 6 1 2 Motor Fan 6 1 6 1 2 1 Motor Fan 6 1 6 1 3 Sensor 6 2 6 1 3 1 Sensor 6 2 6 1 4 Switch 6 2 6 1 4 1 Switch Speaker Thermistor 6 2 6 1 5 PCBs 6 3 6 1 5 1 PCBs 6 3 6 1 6 Variable Resistors VR LED and Check Pins by PCB 6 3 6 1 6 1 Variable Resistors VR Test Pins Jumpers and Switches 6 3 ...

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Page 291: ...r solenoid SL93 2 Multi purpose tray pick up solenoid SL92 3 Roller engaging clutch CL2 4 Registration clutch CL1 5 Cassette pick up solenoid SL9 NO Name Notation 1 Engaging motor PM704 2 Developing rotary motor DCM703 3 Toner cartridge motor PM705 4 Fixing motor DCM702 5 Main motor DCM701 6 Cooling fan FM721 7 Document feed Motor DCM706 8 Flatbed Motor DCM707 9 Reader cooling fan FM722 1 2 5 3 4 ...

Page 292: ...er sensor PS1 3 Developing rotary engaging sensor PS712 4 Front fixing paper detection sensor PS720 5 Roller engaging sensor PS714 6 Paper Delivery Sensor PS721 7 Cassette Feeder Sensor PS717 8 Cassette Paper Sensor PS716 9 ADF Paper Sensor PS722 10 ADF Feeder Sensor PS723 11 CCD Unit HP Sensor PS724 NO Name Notation 1 Door open detection switch SW1 2 Speaker SP1 3 Thermistor TM1 1 8 7 4 6 9 10 11...

Page 293: ...tools measuring instruments and high precision Do not touch them in the field 1 ITB home position detection PCB F 6 6 T 6 6 1 Waste toner detection PCB 10 Relay PCB 2 Registration detection PCB 11 Paper feeder Driver PCB 3 Density detection PCB 12 SCNT PCB 4 ITB home position detection PCB 13 Operation Panel PCB 5 Developing rotary toner level detection PCB 14 Capacitor Board 6 High voltage power ...

Page 294: ......

Page 295: ...Jan 20 2006 ...

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