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Theory of Operation

er. 1.1 Apr. 2010

8. WRITI

G SECTIO

bizhub 164

COMPOSITION/

OPERA

TION

8.2

Operation

8.2.1

Overview

• When a laser beam strikes the polygon mirror, light reflected off the Polygon Mirror is

directed at the drum by way of the lens and return mirror.

• The polygon mirror has four faces, being turned at high speeds by the polygon motor.
• The sos mirror and sos sensor keep constant the timing, at which emission of a laser

beam is started for each main scanning line.

A0XXT2C505AA

Polygon
Motor

SOS Mirror

SOS Sensor

LD Board

Содержание BIZHUB 164

Страница 1: ...SERVICE MANUAL 2010 04 2010 04 Ver 1 1 Ver 1 1 THEORY OF OPERATION...

Страница 2: ...E S 1 DESCRIPTION ITEMS FOR DANGER WARNING AND CAUTION S 1 SAFETY WARNINGS S 2 WARNING INDICATIONS ON THE MACHINE S 17 MEASURES TO TAKE IN CASE OF AN ACCIDENT S 19 Composition of the service manual C...

Страница 3: ...ii Blank Page...

Страница 4: ...se of technical training and even after that for performing maintenance and control of the product properly Keep this service manual also for future service In this Service Manual each of three expres...

Страница 5: ...rformance and safety Such modifications are therefore strictly prohibited the points listed below are not exhaustive but they illustrate the reason ing behind this policy SAFETY WARNINGS Prohibited Ac...

Страница 6: ...able having enough cur rent capacity and the cord set meets regulatory requirements for the area Use of inadequate cord set leads to fire or electric shock Attach power plug which meets the following...

Страница 7: ...r leads to the product connecting to inadequate power supply voltage current capacity grounding and may result in fire or electric shock If proper wall outlet is not available advice the customer to c...

Страница 8: ...a risk of fire Check whether the power cord is damaged Check whether the sheath is damaged If the power plug cord or sheath is damaged replace with a new power cord with plug and connector on each en...

Страница 9: ...ot use an extension cable reel with the cable taken up Fire may result Prohibited Installation Places WARNING Do not place the product near flammable materials or vola tile materials that may catch fi...

Страница 10: ...Servicing CAUTION Before conducting an inspection read all relevant docu mentation service manual technical notices etc and proceed with the inspection following the prescribed pro cedure in safety c...

Страница 11: ...ve or high voltage parts or you may be caught in moving gears or the timing belt leading to a risk of injury Take every care when servicing with the external cover detached High voltage exists around...

Страница 12: ...icing When accessing a hard to view or narrow spot be careful about sharp edges and burrs of the frame and parts They may injure your hands or fingers Do not allow any metal parts such as clips staple...

Страница 13: ...er replacing a part to which AC voltage is applied e g optical lamp and fixing lamp be sure to check the installa tion state A risk of fire exists Check the interlock switch and actuator for loosening...

Страница 14: ...ue to dust explosion Handling of Service Materials CAUTION Unplug the power cord from the wall outlet Drum cleaner isopropyl alcohol and roller cleaner ace tone based are highly flammable and must be...

Страница 15: ...e of the Print Head Unit This product employs a Class 3B laser diode that emits an invisible laser beam The laser diode and the scanning polygon mirror are incorporated in the print head unit The prin...

Страница 16: ...fylder IEC60825 1 sikkerheds kravene halvlederlaser Laserdiodens h jeste styrke 7 mW b lgel ngden 770 800 nm LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT VAROITUS Laitteen k ytt minen muulla kuin t ss k...

Страница 17: ...en VARNING Osynlig laserstr ining n r denna del r ppnad och sp rren r urkopplad Betrakta ej str ien ADVERSEL Dersom apparatet brukes p annen m te enn spesifisert i denne bruksanvisn ing kan brukeren u...

Страница 18: ...SAFETY AND IMPORTANT WARNING ITEMS S 15 4 2 Laser Safety Label A laser safety label is attached to the inside of the machine as shown below A0XXP0E501DA...

Страница 19: ...forming to the above specifications When a disassembly job needs to be performed in the laser beam path such as when working around the printerhead and PC Drum be sure first to turn the printer OFF If...

Страница 20: ...TION WARNING INDICATIONS ON THE MACHINE A0XXP0C502DA CAUTION The area around the Fusing Unit is extremely hot Touching any part other than those indicated may result in burns You may be burned or inju...

Страница 21: ...e This area generates high voltage Be careful not to touch here when the power is turned ON to avoid getting an electric shock High voltage This area generates high voltage Be careful not to touch her...

Страница 22: ...f a serious accident has been received from a customer an on site evalua tion must be carried out quickly and KMBT must be notified 3 To determine the cause of the accident conditions and materials mu...

Страница 23: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 20 Blank Page...

Страница 24: ...ormation The basic configuration of each section is as follows However some options may not be applied to the following configuration Theory of Operation section Field service section OUTLINE Explanat...

Страница 25: ...identified with S abbreviation for Short edge feeding on the paper size No specific notation is added for the long edge feeding When the size has only the short edge feeding with no long edge feeding...

Страница 26: ...SERVICE MANUAL 2010 04 Ver 1 1 THEORY OF OPERATION...

Страница 27: ...er of times the revision has been made To indicate clearly a section revised show in the lower outside section of the correspond ing page A number within represents the number of times the revision ha...

Страница 28: ...function 6 3 CROSS SECTIONAL VIEW 7 4 PAPER PATH 8 COMPOSITION OPERATION 5 OVERALL CONFIGRATION 9 5 1 Control Block Diagram 9 5 2 Image creation process 10 5 3 Timing chart at print start 11 5 3 1 Pr...

Страница 29: ...Drum drive 25 12 IMAGING UNIT SECTION charge corona 26 12 1 Configuration 26 12 2 Operation 27 13 IMAGING UNIT SECTION developing 28 13 1 Configuration 28 13 2 Drive 29 13 3 Operation 30 13 3 1 Toner...

Страница 30: ...ation 48 18 2 Drive 49 18 3 Operation 50 18 3 1 Registration control 50 19 FUSING SECTION 51 19 1 Configuration 51 19 2 Drive 52 19 3 Operation 52 19 3 1 Fusing speed correction 52 19 3 2 Fusing press...

Страница 31: ...bizhub 164 OUTLINE COMPOSITION OPERATION Theory of Operation Ver 1 1 Apr 2010 iv 22 1 2 Operation 60 23 FAN CONTROL 61 23 1 Configuration 61 23 2 Operation 61 23 2 1 Function 61 23 2 2 Fan control 61...

Страница 32: ...Theory of Operation Ver 1 1 Apr 2010 1 SYSTEM CONFIGURATION 1 bizhub 164 OUTLINE OUTLINE 1 SYSTEM CONFIGURATION 1 2 System front view 1 bizhub 164 2 Multi bypass tray MB 503 A0XXT1C501AA 1 2...

Страница 33: ...Non erase Image transfer system Roller image transfer system Paper separating system Combination of curvature separating claws system Fusing system Roller fusing system Heating system Halogen lamp Typ...

Страница 34: ...e zoom ratios 0 50 to 2 00 in 0 001 increments Paper size used Tray 1 A3 to A5S Letter LedgerS 11 x 14 LegalS Invoice 8K 16K FLS Multi bypass tray Copy exit tray capacity 250 sheets Tray 1 Multi bypas...

Страница 35: ...ximum 12 000 prints month Power requirements Voltage AC110 V AC120 127V AC220 240V Current 110 V 7 A 120 V 6 A 127 V 6 A 230 V 3 5 A Frequency 50 60 Hz Max power consumption 800 W Dimensions 570 mm W...

Страница 36: ...r 2003 Standard Edition SP1 or later Windows Server 2003 Enterprise Edition SP1 or later Windows Server 2003 R2 Standard Edition Windows Server 2003 R2 Enterprise Edition Windows XP Professional x64 E...

Страница 37: ...ows Server 2003 Enterprise Edition SP1 or later Windows Server 2003 R2 Standard Edition Windows Server 2003 R2 Enterprise Edition Windows XP Professional x64 Edition Windows Server 2003 Standard x64 E...

Страница 38: ...er 1 1 Apr 2010 3 CROSS SECTIONAL VIEW 7 bizhub 164 OUTLINE 3 CROSS SECTIONAL VIEW A0XXT1C500AA Scanner Fusing unit Exit section Transfer section Multiple bypass tray Imaging unit Tray1 Write section...

Страница 39: ...4 PAPER PATH Theory of Operation Ver 1 1 Apr 2010 8 bizhub 164 OUTLINE 4 PAPER PATH A0XXT1C502AA...

Страница 40: ...bizhub 164 COMPOSITION OPERATION COMPOSITION OPERATION 5 OVERALL CONFIGRATION 5 1 Control Block Diagram A0XXT2C501AA Operation panel IR CIS Printer control board PRCB PH Process Motor Sensor DC power...

Страница 41: ...tic latent image 7 Developing Toner negatively charged in the developer mixing chamber is attracted onto the electrostatic latent image changing it to a visible developed image A developing bias Vb is...

Страница 42: ...mm s The process speed is not changed according to the size or type of the paper Instead the main body controls the intervals between sheets of paper paper transport timing For details see FUSING SEC...

Страница 43: ...ECTION Theory of Operation Ver 1 1 Apr 2010 12 bizhub 164 COMPOSITION OPERATION 6 INTERFACE SECTION 6 1 Configuration No Type Use 1 USB Port Type A USB2 0 1 1 For connection between pc and main body A...

Страница 44: ...Theory of Operation Ver 1 1 Apr 2010 7 SCANNER SECTION 13 bizhub 164 COMPOSITION OPERATION 7 SCANNER SECTION 7 1 Configuration A0XXT2C543AA A0XXT2C546AA CIS module CIS Scanner motor M4...

Страница 45: ...7 SCANNER SECTION Theory of Operation Ver 1 1 Apr 2010 14 bizhub 164 COMPOSITION OPERATION 7 2 Drive A0XXT2C544AA...

Страница 46: ...r the lapse of 30 seconds thereafter the scanner moves to the standby position 3 If the start key is pressed in step 1 above or during a period of 30 seconds after the pre shading sequence the scanner...

Страница 47: ...8 WRITING SECTION Theory of Operation Ver 1 1 Apr 2010 16 bizhub 164 COMPOSITION OPERATION 8 WRITING SECTION 8 1 Configuration A0XXT2C504AA Polygon motor SOS sensor LD board A0XXT2C566AA PH unit...

Страница 48: ...ght reflected off the Polygon Mirror is directed at the drum by way of the lens and return mirror The polygon mirror has four faces being turned at high speeds by the polygon motor The sos mirror and...

Страница 49: ...is determined by the media size However there is a 4 0 mm wide void area on both the both edges of the media B Sub scan direction FD The print start position in the FD direction is determined by the...

Страница 50: ...Theory of Operation Ver 1 1 Apr 2010 9 TONER SUPPLY SECTION 19 bizhub 164 COMPOSITION OPERATION 9 TONER SUPPLY SECTION 9 1 Configuration 9 2 Drive A0XXT2C547AA A0XXT2C521AA Toner supply motor...

Страница 51: ...ded in the outer race of the coupling 3 When the toner bottle turns toner in the metering chamber drops 4 When the toner bottle is turned again the supply door is opened by the weight of toner in the...

Страница 52: ...w the main body forcibly prohibits the initiation of a new print cycle and recovers the required T C ratio level Two patterns of control are performed according to the timing at which the T C recovery...

Страница 53: ...to a stop A0XXT2C510AA The main motor and toner supply motor are ener gized to replenish toner Predetermined T C or more is recovered T C is recovered by 1 or more The toner supply motor is deenergiz...

Страница 54: ...od of time through which the drum is rotated main motor drive time When the drum rotation time reaches the life value the life message appear on the con trol panel A0XXT2C511AA A0XXT2C548AA drum Paper...

Страница 55: ...um Theory of Operation Ver 1 1 Apr 2010 24 bizhub 164 COMPOSITION OPERATION 11 IMAGING UNIT SECTION Drum 11 1 Configuration A0XXT2C512AA A08EC582AA A0XXT2C513AA Aluminum base Charge transport layer Ch...

Страница 56: ...ub 164 COMPOSITION OPERATION 11 2 Drive 11 3 Operation 11 3 1 Drum drive The drum is driven by the main motor via a gear train The main motor drives not only the drum but also the image transfer syste...

Страница 57: ...AGING UNIT SECTION charge corona Theory of Operation Ver 1 1 Apr 2010 26 bizhub 164 COMPOSITION OPERATION 12 IMAGING UNIT SECTION charge corona 12 1 Configuration A08EC583AA A0XXT2C515AA Drum Charging...

Страница 58: ...na discharge from the drum charge corona The grid mesh interposed between the corona wire and the drum ensures that a uniform charge is deposited across the entire surface of the drum The corona unit...

Страница 59: ...oping Theory of Operation Ver 1 1 Apr 2010 28 bizhub 164 COMPOSITION OPERATION 13 IMAGING UNIT SECTION developing 13 1 Configuration A0XXT2C516AA A0XXT2C549AA Agitating screw Toner supply screw TCR se...

Страница 60: ...Theory of Operation Ver 1 1 Apr 2010 13 IMAGING UNIT SECTION developing 29 bizhub 164 COMPOSITION OPERATION 13 2 Drive A0XXT2C517AA Developing roller Main motor M1...

Страница 61: ...the main body by the toner supply screw 3 The toner level detection mechanism TCR sensor detects the T C ratio of the developer in the developer mixing chamber 4 The toner conveyed to the toner supply...

Страница 62: ...he differ ence in potential between the voltage Vi on the surface of the drum and Vb DC Large difference A greater amount of toner sticks Small difference A smaller amount of toner sticks 13 3 3 TCR S...

Страница 63: ...14 TRANSFER SEPARATION SECTION Theory of Operation Ver 1 1 Apr 2010 32 bizhub 164 COMPOSITION OPERATION 14 TRANSFER SEPARATION SECTION 14 1 Configuration A0XXT2C519AA A0XXT2C552AA Transfer roller...

Страница 64: ...width The smaller the paper width the greater the amount of charge 2 B W ratio of image The higher the coverage the greater the amount of charge 14 3 2 Transfer roller cleaning control DC positive an...

Страница 65: ...tion system that works on the diameters of the drum and the image transfer roller Since the drum has a small diameter there is no likelihood that the paper will be wound around the drum The paper is s...

Страница 66: ...ECTION 35 bizhub 164 COMPOSITION OPERATION 15 TONER COLLECTION SECTION 15 1 Configuration A0XXT2C555AA A0XXT2C522AA Toner scooping screw Cleaning blade Toner conveyance screw 1 Toner conveyance screw...

Страница 67: ...15 TONER COLLECTION SECTION Theory of Operation Ver 1 1 Apr 2010 36 bizhub 164 COMPOSITION OPERATION 15 2 Drive A0XXT2C523AA Main motor...

Страница 68: ...by way of toner conveyance screw 1 and toner conveyance screw 2 onto the developer mixing chamber The following control is provided to prevent paper dust from being wedged between the cleaning blade...

Страница 69: ...Operation Ver 1 1 Apr 2010 38 bizhub 164 COMPOSITION OPERATION 16 PAPER FEED SECTION Tray1 16 1 Configuration A0XXT2C525AA A0XXT2C556AA Paper guide FD Tray1 empty sensor PS2 Feed roller Paper lifting...

Страница 70: ...Theory of Operation Ver 1 1 Apr 2010 16 PAPER FEED SECTION Tray1 39 bizhub 164 COMPOSITION OPERATION 16 2 Drive A0XXT2C526AA Main motor M1 Tray1 paper feed clutch CL1 Feed roller...

Страница 71: ...n into the locked position in which the media is loaded in position Load a media stack and then slide the tray into the main body This causes the lock release lever to unlock the media lift plate The...

Страница 72: ...ick up clutch and the pick up roller is rotated B Multiple sheet feeding prevention control The fixed separation pad system is used for media separation This ensures that only the first sheet of media...

Страница 73: ...ty detection The Tray1 empty sensor PS2 detects a paper empty condition in the drawer When paper runs out the actuator is raised to unblock the tray1 empty sensor and the corresponding message appears...

Страница 74: ...COMPOSITION OPERATION 17 MULTI BYPASS SECTION MB 503 Standard on the product shipped to China 17 1 Configuration A0XXT2C527AA A0XXT2C559AA Bypass paper empty sensor PS3 Bypass pick up sole noid SD1 B...

Страница 75: ...17 MULTI BYPASS SECTION MB 503 Theory of Operation Ver 1 1 Apr 2010 44 bizhub 164 COMPOSITION OPERATION 17 2 Drive A0XXT2C528AA Main motor M1 Bypass paper feed clutch CL3...

Страница 76: ...aper feed clutch is energized again the cam is rotated to lower the paper lifting plate The ascent and descent motion of the paper lifting plate is controlled using the bypass lift sensor The ascent o...

Страница 77: ...between the Feed Roller and Separation Roller is effectively used to prevent double feed of paper When one sheet of paper is taken up The coefficient of friction on the front side of the sheet of pap...

Страница 78: ...sor PS3 detects a paper empty condition in the drawer When paper runs out the actuator is raised to block the tray1 empty sensor When the tray1 empty sensor is blocked the bypass pick up solenoid is e...

Страница 79: ...ON Theory of Operation Ver 1 1 Apr 2010 48 bizhub 164 COMPOSITION OPERATION 18 REGISTRATION SECTION 18 1 Configuration A0XXT2C531AA A0XXT2C560AA Transfer roller Registration roller Registration sensor...

Страница 80: ...Theory of Operation Ver 1 1 Apr 2010 18 REGISTRATION SECTION 49 bizhub 164 COMPOSITION OPERATION 18 2 Drive A0XXT2C532AA Registration sensor PS1 Registration clutch CL1 Main motor M1...

Страница 81: ...es the registration roller During paper transport a loop is formed in the paper between the tray 1 feed roller bypass feed roller and the registration roller to thereby correct any skew in the paper R...

Страница 82: ...010 19 FUSING SECTION 51 bizhub 164 COMPOSITION OPERATION 19 FUSING SECTION 19 1 Configuration A0XXT2C534AA A0XXT2C561AA Fusing heater lamp Thermistor 1 TH1 Thermostat TS1 Heat roller Pressure roller...

Страница 83: ...3 1 Fusing speed correction A Heat roller speed control The heat roller is driven by the main motor The pressure roller which is pressed up against the heat roller is driven by the heat roller 19 3 2...

Страница 84: ...ure is detected by using a thermistor that translates the temperature to a corresponding electrical signal If the fusing roller temperature becomes excessively high the fusing roller heater lamp is sh...

Страница 85: ...up control At the end of a print cycle 2 Control termination timing At the start of a print cycle A door is opened A malfunction or media misfeed occurs C Temperature control during printing The fusin...

Страница 86: ...abnormally high temperature through the first and second approach cannot be detected because of a faulty thermistor the thermostat comes into play to shut down the power supplied to the fusing heater...

Страница 87: ...OMPOSITION OPERATION 19 3 7 New article detection The fusing unit is not mounted with any new article detection mechanism If the fusing unit is replaced with a new one reset the counter using CLEAR DA...

Страница 88: ...Theory of Operation Ver 1 1 Apr 2010 20 PAPER EXIT SECTION 57 bizhub 164 COMPOSITION OPERATION 20 PAPER EXIT SECTION 20 1 Configuration A0XXT2C537AA A0XXT2C565AA Exit roller Exit roll...

Страница 89: ...SITION OPERATION 20 2 Drive 20 3 Operation 20 3 1 Conveyance control A Conveyance path The exit roller is driven by the main motor The media conveyed from the fusing section is fed out into the exit t...

Страница 90: ...an appropriate level according to the following settings ID ADJUST Service mode VG ADJUST Service mode Print Density Utility SUPPLIES LIFE COUNT Service mode To stabilize image transfer Transfer volt...

Страница 91: ...SECTION 22 1 When the main power switch is turned ON 22 1 1 Configuration 22 1 2 Operation When the main power switch is turned ON power is supplied from the dc power supply to the following component...

Страница 92: ...nit to the out side to prevent the machine interior temperature from running high in addition the fan motor pulls paper being transported up through suc tion force to help stabilize paper transport Oz...

Страница 93: ...23 FAN CONTROL Theory of Operation Ver 1 1 Apr 2010 62 bizhub 164 COMPOSITION OPERATION Blank Page...

Страница 94: ...SS TECHNOLOGIES INC Printed in Japan Printed in Japan DDA0XX M TE1 DDA0XX M TE1 Use of this manual should be strictly supervised to avoid disclosure of confidential information Use of this manual shou...

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