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Canon LBP 3370, Service Manual, Page: 90 / 114

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Canon LBP 3370 Service Manual Download Page 90

Summary of Contents for LBP 3370

Page 1: ...Jan 25 2008 Service Manual LBP3310 3370 Series...

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Page 3: ...need arises In the event of major changes in the contents of this manual over a long or short period Canon will issue a new edition of this manual The following paragraph does not apply to any countri...

Page 4: ...uiring 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...

Page 5: ...ed 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 me...

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Page 7: ...2 2 2 3 1 2 Laser Control Circuit 2 3 2 3 2 Controlling the Laser Activation Timing 2 5 2 3 2 1 Laser emission control 2 5 2 3 2 2 Horizontal synchronous control 2 5 2 3 3 Laser Control 2 5 2 3 3 1 A...

Page 8: ...of Operation by Block 2 20 2 7 2 Engine Controller 2 21 2 7 2 1 Outline 2 21 2 8 FIXING UNIT DELIVERY SYSTEM 2 23 2 8 1 Overview Configuration 2 23 2 8 1 1 Outline 2 23 2 8 2 Various Control Mechanis...

Page 9: ...nsfer charging roller 3 13 3 4 PICKUP AND FEEDING SYSTEM 3 13 3 4 1 Cassette Pickup Roller 3 13 3 4 1 1 Removing the cassette pickup roller 3 13 3 4 2 Cassette Pickup solenoid 3 14 3 4 2 1 Preparation...

Page 10: ...Test Print 5 1 5 1 2 Mechanical Adjustment 5 1 5 1 2 1 Checking the Nip Width fixing pressure roller 5 1 5 2 SERVICE TOOLS 5 2 5 2 1 Standard Tools 5 2 5 2 2 Special Tools 5 2 5 3 ERROR CODE TABLE 5...

Page 11: ...Contents 6 1 4 Sensor 6 2 6 1 4 1 Sensor 6 2 6 1 5 PCBs 6 3 6 1 5 1 PCB 6 3...

Page 12: ...Contents...

Page 13: ...Chapter 1 PRODUCT DESCRIPTION...

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Page 15: ...1 1 1 2 2 System Construction 1 1 1 3 Product Specifications 1 1 1 3 1 Product Specifications 1 1 1 3 2 Product Specifications 1 2 1 4 Name of Parts 1 3 1 4 1 External View 1 3 1 4 2 External View 1 4...

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Page 17: ...heater only during print operations This shortens wait time and enables low power consumption during stand by period 3 Automatic duplex printing The printer enables an automatic duplex printing by ins...

Page 18: ...eavy paper 91 to 163 g m2 recycled paper transparency label paper envelop DL COM10 C5 Monarch B5 Cassette capacity 250 sheets approx plain paper 64 g m2 Multi purpose capacity 50 sheets approx plain p...

Page 19: ...m Length 127 0 to 355 6 mm Cassette paper type plain paper 64 to 90 g m2 heavy paper 91 to 120 g m2 recycled paper Multi purpose paper type plain paper 64 to 90 g m2 heavy paper 91 to 163 g m2 recycle...

Page 20: ...on 3 Extension tray 9 Control Panel 4 Paper guide 10 Right cover 5 Paper Cassette 11 Power Switch 6 Front Cover 1 Face up Output Tray 4 Expansion Slot 2 Power Socket 5 USB Connector 3 Left cover 1 Man...

Page 21: ...itch 6 Front Cover 1 Face up Output Tray 5 10 Indicatotor 2 Power Socket 6 TX RX Indicatotor 3 Left Cover 7 LAN Connector 4 100 Indicatotor 8 USB Connector 1 Face down delivery roller 11 Pick up rolle...

Page 22: ...rce Blinking No paper or paper of an inappropriate size s loaded 2 Paper Jam Indicator Blinking A paper jam is occurring disabling printing 3 Alarm Indicator On Service call is occurring Blinking An e...

Page 23: ...n the Job indicator is on or blinking Does not function when the Job indicator is off 9 Online Key Online Indicator Green Turns on online off offline the connection to the computer This key also has t...

Page 24: ...Chapter 1 1 8 Off The printer cannot print...

Page 25: ...Chapter 2 TECHNICAL REFERENCE...

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Page 27: ...ge formation block 2 9 2 4 1 4 Development block 2 9 2 4 1 5 Transfer block 2 10 2 4 1 6 Fixing block 2 11 2 4 1 7 Photosensitive drum cleaning block 2 11 2 4 2 High Voltage Control 2 12 2 4 2 1 Outli...

Page 28: ...Functions 2 18 2 6 2 2 1 Protective function 2 18 2 7 ENGINE CONTROL SYSTEM 2 19 2 7 1 Video Controller 2 19 2 7 1 1 Outline 2 19 2 7 1 2 Outline of Operation by Block 2 19 2 7 1 3 Overview 2 20 2 7 1...

Page 29: ...nitial drive is completed To clear the potential of drum surface and to clean the transfer charging roller Detect the presence of cartridge STBY STANDBY From the end of the WAIT period or the LSTR per...

Page 30: ...F 2 2 The laser scanner unit of this printer utilizes a twin beam method see Note It scans two lines simultaneously with 2 laser diodes in order to realize a high speed laser scanning The operational...

Page 31: ...and the laser beam scans on the drum at each prescribed speed the latent image is formed on the photosensitive drum Twin beam method The laser unit unifies with two laser diodes LD1 LD2 In one scanni...

Page 32: ...Automatic power control APC 3 Horizontal synchronization control 4 Image masking control Operation mode CNT2 CNT1 CNT0 Remarks Discharge mode L L L C802 C803 discharge Data output mode H H H Used duri...

Page 33: ...way The following is the sequence of this control 1 When the LASER CONTROL signals CNT0 CNT1 CNT2 put into the LD1APC mode the laser driver allows the LD1 to emit light 2 The light intensity of the LD...

Page 34: ...ehind the leading edge of the paper where the BDO signal starts to output to the trailing edge 2 3 4 Laser Scanner Motor Control 2 3 4 1 Outline 0018 3102 LBP3370 LBP3310 The scanner motor control is...

Page 35: ...otor rotates at its prescribed rotational count or not The CPU determines the failure or the error and notifies it to the video controller under the following conditions 1 Scanner failure When the BDI...

Page 36: ...ded into 5 blocks with 7 steps A toner image is formed on a print paper as it goes step by step in each block F 2 8 1 Electrostatic latent image formation block Form an electrostatic latent image on t...

Page 37: ...e The primary charging roller is made of a conductive rubber To maintain the surface potential charged on the photosensitive drum uniformly the DC bias and ad ditional AC bias are combined This DC bia...

Page 38: ...rface and the cylinder higher potential on drum side This phenomenon is called the projection development and it visualizes the electrostatic latent image on the drum F 2 13 The developing cylinder is...

Page 39: ...ide of a print paper from the fixing film before it comes to the fixing heater It results that the transferred toner is held stronger onto the paper and it is prevented from splattering This printer u...

Page 40: ...d according to two signals output from the CPU the PRIMARY CHARGING DC BIAS DRIVE signal PRDCC and the PRIMARY CHARGING AC BIAS DRIVE signal PRACC The PRDCC signal is a clock signal to generate the DC...

Page 41: ...as The print bias is to transfer the toner on the photosensitive drum surface onto print paper during the print sequence The transfer positive bias is applied to the transfer charging roller 2 4 2 5 F...

Page 42: ...not at the checking timing The check timing is stored in the memory of the CPU If the CPU determines the jam it stops the print operation and notifies it to the video controller SL1 M1 SL3 SL2 ENGINE...

Page 43: ...tationary jam when the delivery sensor PS915 does not detect the absence of the paper within approx 1 5 sec at all after the top of page sensor PS912 detected the trailing edge 2 5 2 3 3 Reversing sta...

Page 44: ...eeder pickup solenoid SL1 goes on for about 0 14 sec 3 The rotation of the manual feeder pickup roller moves the print paper into the machine with the separation pad making sure that no more than a si...

Page 45: ...g 2 6 2 Power Supply 2 6 2 1 Power Supply 2 6 2 1 1 Low voltage Power Supply Circuit 0018 3142 LBP3370 LBP3310 The low voltage power supply circuit converts the AC power supply input from the inlet in...

Page 46: ...approx 2 min to turn the printer ON again from when the power is turned OFF This circuit contains the fuse 1 FU101 and the fuse 2 FU102 110 127V only The fuses burn and interrupt the power supply if...

Page 47: ...ctrically It is used to retain parameters of the printer unit that must remain un changed e g USB serial number printing environment these parameters are retained when the power is turned off on 2 ASI...

Page 48: ...ation circuit and turned into bitmap data for output to the DC controller A check may be made on the printer status using an external device F 2 25 2 7 1 4 Outline of Operation by Block 0018 3147 LBP3...

Page 49: ...circuit and the fan motor drive circuit The block diagram of this circuit is illustrated below and each circuit is described in the following IC1 SDRAM Retains image data IC2 IC3 IC4 IC9 EEPROM EEPRO...

Page 50: ...fixing control circuit controls the temperature of the fixing unit according to the command from the CPU IC201 e High voltage power supply circuit The high voltage power supply circuit generates the...

Page 51: ...below Heater This fixing unit incorporates one heater Fixing heater H1 To heat the fixing film ceramic heater Thermistor This fixing unit incorporates one thermistor Thermistor TH1 Sit almost at the...

Page 52: ...fixing heater at the normally targeted temperature during print operation The target temperature may be any of 7 settings used according to the selected fixing mode Any of these modes is selected acc...

Page 53: ...he temperature of the fixing heater rises abnormally high and the voltage of the thermistor is lower than approx 0 9 V equivalent to 220 deg C 2 Protective function by the fixing heater safety circuit...

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Page 55: ...Chapter 3 DISASSEMBLY AND ASSEMBLY...

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Page 57: ...board 3 8 3 1 9 1 Preparation for removing the engine controller PCB 3 8 3 1 9 2 Removing the engine controller PCB 3 8 3 1 10 Duplexing Driver Board 3 9 3 1 10 1 Preparation for removing the duplexin...

Page 58: ...ing the main motor 3 16 3 4 8 Reversal Solenoid 3 16 3 4 8 1 Preparation for removing the reverse solenoid 3 16 3 4 8 2 Removing the reverse solenoid 3 16 3 4 9 Duplexing Unit 3 16 3 4 9 1 Preparation...

Page 59: ...om the duplexing unit 2 2 bosses 3 F 3 3 3 1 2 Right Cover 3 1 2 1 Detaching the right cover 0018 2602 LBP3370 LBP3310 1 Remove the cassette 2 Press the release button 1 to open the front cover 2 F 3...

Page 60: ...ews 1 and fit the blade edge of flat blade screwdriver to the claw 2 of the left cover through the gap with the rear cover 4 Press A of the rear cover to the rear direction and move down the driver to...

Page 61: ...erence Removing the rear cover unit 3 1 4 2 Detaching the upper cover 0018 2626 LBP3310 1 Remove the parts below 1 screw 1 1 clamp 2 1 connector 3 F 3 8 2 Detach the upper cover unit 1 together with t...

Page 62: ...etach the upper cover unit 1 together with the control panel 2 screws 2 to be loosened 2 screws 3 F 3 13 3 Free the harness 2 from the guide 1 F 3 14 4 Detach the upper cover 1 1 claw 2 1 control pane...

Page 63: ...door unit 1 2 screws 2 F 3 18 3 1 6 Main Drive Unit 3 1 6 1 Preparation for removing the main drive assembly 0018 2964 LBP3370 LBP3310 1 Detach the left cover page 3 2 Reference Detaching the left co...

Page 64: ...rive Unit 3 1 7 1 Removing the duplexing drive assembly 0018 2963 LBP3370 LBP3310 1 Detach the right cover page 3 1 Reference Detaching the right cover 2 Free the 2 harnesses 2 from the guide 1 3 Remo...

Page 65: ...642 LBP3310 1 Remove the parts below 1 screw 1 1 clamp 2 1 connector 3 F 3 26 2 Detach the upper cover unit 1 together with the control panel 2 screws 2 to be loosened 2 screws 3 F 3 27 3 Free the har...

Page 66: ...tor 2 F 3 35 3 1 9 Engine controller board 3 1 9 1 Preparation for removing the engine controller PCB 0018 3005 LBP3370 LBP3310 1 Detach the left cover page 3 2 Reference Detaching the left cover 2 De...

Page 67: ...ection F 3 37 4 Remove the screw 1 F 3 38 5 Guide the flat cable 1 and the 3 harnesses 2 through the hole 3 on the left side plate to the inward direction 6 Remove the 2 screws 4 7 Slightly open the m...

Page 68: ...t the connector 1 2 Free the harness 3 from the guide 2 F 3 41 3 Free the harness 2 from the guide 1 4 Remove the duplexing driver PCB 3 1 connector 4 1 screw 5 F 3 42 3 1 11 Video Controller Board 3...

Page 69: ...emove the plate 1 12 screws 2 F 3 48 4 Remove the video controller PCB 1 2 flat cables 2 3 connectors 3 1 screw binding 4 6 screws TP 5 F 3 49 3 1 12 USB Board 3 1 12 1 Removing the USB PCB 0018 2969...

Page 70: ...nnectors 2 2 claws 3 2 bosses 4 F 3 54 3 1 14 Main Body Fan 3 1 14 1 Preparation for removing the fan 0018 2995 LBP3370 LBP3310 1 Detach the left cover page 3 2 Reference Detaching the left cover 2 De...

Page 71: ...roller 0018 3011 LBP3370 LBP3310 1 Press the release button 1 to open the front cover 2 F 3 58 2 Pinch the 2 claws 1 on the bushing and move the transfer charging roller 3 together with the bushing 2...

Page 72: ...3048 LBP3370 LBP3310 1 Remove the cassette pickup solenoid 1 1 screw 2 F 3 62 3 4 3 Cassette Separation Pad 3 4 3 1 Removing the cassette separation pad 0018 3053 LBP3370 LBP3310 1 Remove the cassette...

Page 73: ...n roller 0018 2961 LBP3370 LBP3310 1 Detach the left cover page 3 2 Reference Detaching the left cover 2 Detach the right cover page 3 1 Reference Detaching the right cover 3 Remove the rear cover uni...

Page 74: ...310 1 Disengage the 2 claws 1 to the direction of the arrow remove the 3 screws 2 and remove the main motor 3 together with the harness guide F 3 72 3 4 8 Reversal Solenoid 3 4 8 1 Preparation for rem...

Page 75: ...10 Detaching the upper cover page 3 4 Reference LBP3370 Detaching the upper cover 5 Remove the duplexing drive assembly page 3 6 Reference Removing the duplexing drive assembly 6 Remove the video cont...

Page 76: ...rews 1 11 Slightly open the main body frame to both sides and remove the 2 bosses 2 on the right and left side plates to remove the fixing assembly 3 F 3 83 3 5 1 3 Removing the fixing assembly 0018 2...

Page 77: ...left cover 2 Detach the right cover page 3 1 Reference Detaching the right cover 3 Remove the rear cover unit page 3 1 Reference Removing the rear cover unit 4 Detach the upper cover unit page 3 3 Ref...

Page 78: ...upper cover unit page 3 3 Reference LBP3310 Detaching the upper cover page 3 4 Reference LBP3370 Detaching the upper cover 5 Remove the duplexing drive assembly page 3 6 Reference Removing the duplex...

Page 79: ...Chapter 3 3 21 F 3 96 3 2 1 A B...

Page 80: ...Chapter 3 3 22...

Page 81: ...Chapter 4 MAINTENANCE AND INSPECTION...

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Page 83: ...Replaced Parts 4 1 4 1 1 Periodically Replaced Parts 4 1 4 2 Consumables 4 1 4 2 1 Life Expectancy of Consumable Parts 4 1 4 3 Periodical Service 4 1 4 3 1 Periodic Service 4 1 4 4 Cleaning 4 1 4 4 1...

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Page 85: ...4 Cleaning 4 4 1 Cleaning During Service Visit 0018 3157 LBP3370 LBP3310 F 4 1 1 Separation pad Wipe the rubber part with the dry lint free paper 2 Munual feed pick up roller Wipe with the dry lint fr...

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Page 87: ...Chapter 5 TROUBLESHOOTING...

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Page 89: ...TABLE 5 2 5 3 1 Error Code 5 2 5 3 2 Error Code 5 3 5 3 3 A4 XX_ERROR 5 4 5 3 4 A5 XX_ERROR 5 4 5 3 5 A7 XX_ERROR 5 4 5 3 6 D7 XX_ERROR 5 4 5 3 7 D8 XX_ERROR 5 4 5 4 Version Up 5 5 5 4 1 Overview of U...

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Page 91: ...n be printed continuously if the switch is held down Accessing the Test Print Switch 1 Detach the left cover 1 page 3 2 Detaching the left cover 2 Insert a tool such as a driver into the guide hole 1...

Page 92: ...s Crimper Tweezers Ruler CK 0203 CK 0205 CK 0218 CK 0302 CK 0303 Applied to the axis ring Employed to measure 150 mm 21 22 23 24 25 Mallet plastic head Brush Penlight Plastic bottle Lint free paper CK...

Page 93: ...B E014 Main motor error 0000 Condition A motor ready state does not start 4 msec or more after the motor has been started Cause The drum motor is faulty The engine controller PCB is faulty Replace the...

Page 94: ...gram of the video controller Turn off and then back on the power Replace the video controller board Number field Description Remedial action A5 00 to 07 A fault has occurred in image processing within...

Page 95: ...of the Service Support Tool 0018 3178 LBP3370 The service support tool SST hereafter provides the following functions Number field Description Corrective action D8 00 TO 0C A fault has occurred in th...

Page 96: ...key 1 and the cancel job key 2 turn on the power 2 Press the settings key 3 several times when SERVICE MODE is indicated press the reset key 4 to start service mode 3 Press the setttings key 3 severa...

Page 97: ...he PC 3 Start up the SST 4 Click Register Firmware F 5 8 5 Select the drive in which you have set the system CD and click search Main power ON Service Mode Downrod SYSTEM program SYSTEM BOOT program D...

Page 98: ...Tool DLM0 Ver 3 34E Registered firmware Select a drive and folder Click a button to execute CONNECT CANCEL SEARCH EXIT REGISTER Register Firmware Delete Firmware Delete Backup Data System Management S...

Page 99: ...eral times when SERVICE MODE is indicated press the reset key 4 to start service mode 3 Press the setttings key 3 several times when F W UPDATE GR is indicated press the reset key 4 4 Press the settti...

Page 100: ...art up the SST 5 4 6 The down load procedure of the system 0018 3181 LBP3370 1 Select the model to connect LBP3370 3 2 1 5 4 Found New Hardware Wizard Welcome to the Found New Hardware Wizard This Wiz...

Page 101: ...ect a model to connect CONTROL Model List MFP USB Target Selection MFP USB c Select the target EBP3360 iRC2570 LBP3370 iRC3100 iRC3100N iRC3170 LBP5900 LBP3370 Service Support Tool DLM0 Ver 3 34E Down...

Page 102: ...firmware to be download rhen click the Start button Click the button of task to be executed Country Region All Language Common Version 01 03 CONT Selectable Firmware Initial Complete Download Connect...

Page 103: ...roup name appears Use the down arrow key to move to the next item F 5 20 5 5 1 2 Service Mode 0018 3192 LBP3370 T 5 10 Service mode Function gr Item Description Settings ECONF EXPORT The equipment set...

Page 104: ...various system log file acquisition functions on off JOB SERIALIZE sets the connector serialization mechanism on off SNMP canon_admin Restrict the SNMP access regarding the internally obtained communi...

Page 105: ...Chapter 6 APPENDIX...

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Page 107: ...6 1 OUTLINE OF ELECTRICAL COMPONENTS 6 1 6 1 1 Clutch Solenoid 6 1 6 1 1 1 Solenoid 6 1 6 1 2 Motor 6 1 6 1 2 1 Motor 6 1 6 1 3 Fan 6 2 6 1 3 1 Fan 6 2 6 1 4 Sensor 6 2 6 1 4 1 Sensor 6 2 6 1 5 PCBs 6...

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Page 109: ...OF ELECTRICAL COMPONENTS 6 1 1 Clutch Solenoid 6 1 1 1 Solenoid 0018 3161 LBP3370 LBP3310 F 6 1 6 1 2 Motor 6 1 2 1 Motor 0018 3162 LBP3370 LBP3310 1 Reversal solenoid 2 Cassette pick up solenoid 3 Ma...

Page 110: ...Chapter 6 6 2 F 6 2 6 1 3 Fan 6 1 3 1 Fan 0018 3163 LBP3370 LBP3310 F 6 3 T 6 1 6 1 4 Sensor 6 1 4 1 Sensor 0018 3164 LBP3370 LBP3310 1 Main motor 1 Fan...

Page 111: ...ter 6 6 3 F 6 4 6 1 5 PCBs 6 1 5 1 PCB 0018 3165 LBP3370 LBP3310 F 6 5 1 Interlock switch 2 Top of page sensor Paper width detection sensor 3 Delivery sensor 4 Paper width detection sensor 2 1 Display...

Page 112: ...Chapter 6 6 4 2 Duplexing driver PCB 3 Engine controller PCB 4 Video controller PCB 5 USB conector PCB...

Page 113: ...Jan 25 2008...

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