Ricoh K-C3.5L Page 56 Service Training Download

Page: 56 / 193

Model K-C3.5L

Ricoh Co. Ltd.

http://www.ricoh.com/

Slide 56

Overview

Single development
roller

Two mixing augers

Toner density control

TD sensor

ID sensor

Development Roller

TD Sensor

This machine uses a single-roller development system. Two mixing augers mix the
developer. The toner density (TD) sensor and image density (ID) sensor (see the
illustration in the PCU section) are used to control the image density.

Summary of Contents for K-C3.5L

Page 1: ...tp www ricoh com Slide 1 Model K C3 5L Service Training K C3 5L Started 26 November 2010 First draft 2 December 2010 Release 3 December 2010 8 December 2010 Several slides modified for easier Chinese...

Page 2: ...Laser Exposure 8 PCU 9 Drum Charge 10 Development Toner Supply 11 Drum Cleaning Toner Recycling 12 Transfer and Separation 13 Paper Feed 14 Fusing 15 Paper Exit 16 Duplex 17 Peripherals ADF DF2000 AR...

Page 3: ...Model K C3 5L 3 Ricoh Co Ltd http www ricoh com Slide 3 Model K C3 5L Service Training 1 Product Outline No additional notes...

Page 4: ...3 5L K C3 5Lb simplex and K C3 5Lcd duplex K C3 5Lb Product Codes B268 50 Asia Pacific B268 59 Taiwan B276 67 Europe K C3 5Lcd Product Codes B269 49 Asia Pacific B269 59 Taiwan B244 61 China B277 67 E...

Page 5: ...p www ricoh com Slide 5 The Machine This is the machine you will study in this training course Note the following Paper trays Bypass tray On right side of machine See next slide Operation panel ADF AR...

Page 6: ...Model K C3 5L 6 Ricoh Co Ltd http www ricoh com Slide 6 Bypass Tray By pass Tray No additional notes...

Page 7: ...om Slide 7 Operation Panel Start Error Load Paper Add Toner Display Selection Scroll Clear Stop Main Power Indicator Operation Switch key Escape Lighter Darker Sort Number Keys OK Original Type Clear...

Page 8: ...ide 8 External Part Names Paper Tray Front Cover Operation Panel Main Power Indicator Main Power Switch Internal Tray Internal Tray Exposure Glass Platen Cover ADF optional Operation Switch Operation...

Page 9: ...Mainframe Copy Printer Twain Scanner 16MB Memory 16MB 32MB memory w o NIC model 250 sheet x1 tray 100 sheet bypass tray 250 sheet output tray USB 2 0 Copy Printer Twain Scanner Duplex 16MB Memory 16MB...

Page 10: ...are shown to the right Internal option NIC Network interface card Optional Units 1 Platen Cover 2 ADF 3 ARDF Only for K C3Lcd 4 1 Bin Tray Only for K C3Lcd 500 5 1 tray paper bank 500 500 6 2 tray pa...

Page 11: ...Model K C3 5L 11 Ricoh Co Ltd http www ricoh com Slide 11 Model K C3 5L Service Training 2 Specifications No additional notes...

Page 12: ...t development system Zoom 50 to 200 in 1 steps Power Consumption Full system Less than 1 28 kW Reduced Electrical Consumption via Lower Power mode Less than 1 W See Energy Saver Modes for more details...

Page 13: ...Model K C3 5L 13 Ricoh Co Ltd http www ricoh com Slide 13 3 Installation Model K C3 5L Service Training No additional notes...

Page 14: ...zation must be performed via SP 2214 1 After installing machine all options and making all test copies record value of total counter This is very important because this value will be used for billing...

Page 15: ...er of bag for better control when pouring Make sure not to spill developer on the gears If you have to turn the gears to distribute developer evenly make sure to do so very slowly and as little as pos...

Page 16: ...DF or ARDF Only one of these can be installed Network Interface Board This NIB is new with this product Two tray Paper Tray Unit One tray Paper Tray Unit One Bin Tray Special Options GW controller Ins...

Page 17: ...Model K C3 5L 17 Ricoh Co Ltd http www ricoh com Slide 17 4 Machine Overview Model K C3 5L Service Training No additional notes...

Page 18: ...ens Block SBU Scanner HP Sensor Scanner Motor Exit Sensor Exit Roller Hot Roller Toner Supply Bottle Holder OPC Drum Image Density Sensor Registration Sensor By pass Feed Roller By pass Tray Laser Uni...

Page 19: ...Model K C3 5L 19 Ricoh Co Ltd http www ricoh com Slide 19 Paper Path ADF Original Feed Paper feed from Tray 1 Paper feed from By pass Tray No additional notes...

Page 20: ...pment Unit More on Drive Layout The top diagram shows the scanner The scanner has one motor The bottom diagram shows how the main motor drives the fusing unit PCU and development unit The three insets...

Page 21: ...to discharge the drum when writing black parts of the image Toner is attracted to these discharged parts of the drum The transfer roller applies a positive current to the reverse side of the paper the...

Page 22: ...Model K C3 5L 22 Ricoh Co Ltd http www ricoh com Slide 22 5 Scanner Model K C3 5L Service Training No additional notes...

Page 23: ...Model K C3 5L 23 Ricoh Co Ltd http www ricoh com Slide 23 Scanner Unit 600 dpi CCD Exposure lamp One xenon lamp The reflector reduces shadows on paste up originals No additional notes...

Page 24: ...www ricoh com Slide 24 Scanner Drive Scanner drive motor Drives the scanner 100 mm s Timing belts are used in this model In ADF mode scanner stays at home position Original is scanned while ADF feeds...

Page 25: ...ion in Platen Mode Overview Study the APS sensors There are two length sensors and two width sensors When the platen cover is being closed the CPU checks the sensors when the platen cover is about 15...

Page 26: ...eliminates the necessity for a pre scan and increases the machine s productivity For other combinations Cannot Detect Original Size will be indicated on the operation panel display if SP 4303 is kept...

Page 27: ...008 Sub scan magnification SP 4009 Main scan magnification SP 4010 Leading edge registration SP 4011 Side to side registration SP 4013 Scanner free run exposure lamp off SP 4305 Determines how machine...

Page 28: ...ork Practice the following replacement and adjustment procedures referencing the FSM Scanner Unit Copy adjustments Do any of the procedures that you think are in need of practicing Pay attention to al...

Page 29: ...Model K C3 5L 29 Ricoh Co Ltd http www ricoh com Slide 29 6 Image Processing Model K C3 5L Service Training No additional notes...

Page 30: ...o signal The SBU Sensor Board Unit converts the analog signal to an 8 bit digital signal then it sends the digital signal to the BICU board The BICU board can be divided into three image processing bl...

Page 31: ...7 400 pixels and the resolution is 600 dpi 23 6 lines mm The CCD has two output lines for odd and even pixels to the analog processing circuit The analog processing circuit performs the following ope...

Page 32: ...Unit on the BICU board which carries out the following processes on the image data 1 Auto shading 2 White black line correction 3 ADS 4 Scanner gamma correction 5 Magnification main scan 6 Filtering...

Page 33: ...types that the user can select Only two are immediately accessible at the operation panel However the user can set up the operation panel with a user tool This will be explained on the next slide The...

Page 34: ...original mode with User Tools Copier Features Adjust Original Mode More on Image Quality Adjustments 2 Only two of the 10 settings can be accessed directly from the operation panel In a new machine th...

Page 35: ...de 35 Image Quality Adjustments 3 3 SP 4922 to 4932 Image processing adjustments SP 4921 Selects one of the original modes only one can be adjusted at any one time First select a mode with SP 4921 The...

Page 36: ...ding SP 4903 ADS level SP 4904 Lower limit for ADS SP 4905 Determines how much of the image is used for ADS the whole width or just a narrow strip Use SP 4015 to adjust the area of the white plate tha...

Page 37: ...justment Copy Adjustments Printing Scanning Scanning Do any of the procedures that you think that you need to practice Pay attention to all notes cautions and warnings in the manual If you have time t...

Page 38: ...Model K C3 5L 38 Ricoh Co Ltd http www ricoh com Slide 38 7 Laser Exposure Model K C3 5L Service Training No additional notes...

Page 39: ...er synchronisation detector is part of the laser diode unit and cannot be replaced separately Laser beam There is only one in this model Automatic Power Control Laser power is controlled automatically...

Page 40: ...nt or right side cover is open a switch cuts power to the laser diode Both covers operate the same switch LDD Drive Board Front Right Cover Safety Switches PSU BICU 5VLD 24V Optical Path PD LD LD Driv...

Page 41: ...P Modes SP 2915 Polygon mirror idling time SP 2998 Main scan magnification printer There is also a main scan adjustment for the scanner which affects image processing algorithms SP 2998 affects laser...

Page 42: ...supply through to the laser diode Practice the following Laser unit component replacement procedures FSM Replacement and Adjustment Laser Unit Copy adjustments FSM Replacement and Adjustment Copy Adju...

Page 43: ...Model K C3 5L 43 Ricoh Co Ltd http www ricoh com Slide 43 8 PCU Photo Conductor Unit Model K C3 5L Service Training No additional notes...

Page 44: ...CU detection in this machine This is due to the PCU not being a user replaceable part Some of the PCU components are replaced individually at PM When a new PCU is installed new developer must also be...

Page 45: ...Pawls Cleaning Unit Counter blade mechanism Edge cleaning mechanism Toner recycling Cleaning blade Toner collection coil Pick off pawls OPC drum ID sensor Development roller Development unit Charge r...

Page 46: ...wing OPC drum Development unit including development roller and TD sensor Charge roller and charge roller cleaning brush Drum cleaning unit blade toner collection coil Pick off pawls The PCU does not...

Page 47: ...Model K C3 5L 47 Ricoh Co Ltd http www ricoh com Slide 47 Drive The main motor drives the drum through a series of gears as shown above Main Motor No additional notes...

Page 48: ...ssembling the machine Then there will be too much toner in the developer and this will cause toner spots on copies This toner may drop into the developer when replacing other parts of the mechanism bu...

Page 49: ...Model K C3 5L 49 Ricoh Co Ltd http www ricoh com Slide 49 9 Drum Charge Model K C3 5L Service Training No additional notes...

Page 50: ...tact with drum Drum charge roller is at 1700 V for printing Drum surface voltage is 950 V Drum Charge Roller More on Drum Charge Roller The charge roller is part of the PCU unit The charge roller turn...

Page 51: ...mediately after making ID sensor pattern A the charge roller voltage stays the same but the development bias goes up to 600 V as a result the drum potential is reduced to 650 V The laser diode is not...

Page 52: ...rgy saver mode and the temperature is less than the target temperature as set with SP Mode When the machine starts warming up from energy saver mode and the machine prints more than 100 prints While m...

Page 53: ...harge Roller Cleaning Cleaning Brush is always in contact with drum charge roller A cam gear moves the charge roller from side to side to improve cleaning This waste toner is not recycled Charge Rolle...

Page 54: ...Model K C3 5L 54 Ricoh Co Ltd http www ricoh com Slide 54 SP Modes SP 2001 Charge roller voltage adjustment for printing and for making an ID sensor pattern No additional notes...

Page 55: ...Model K C3 5L 55 Ricoh Co Ltd http www ricoh com Slide 55 10 Development and Toner Supply Model K C3 5L Service Training No additional notes...

Page 56: ...g augers Toner density control TD sensor ID sensor Development Roller TD Sensor This machine uses a single roller development system Two mixing augers mix the developer The toner density TD sensor and...

Page 57: ...com Slide 57 Drive Main motor Drives development mechanism via development drive shaft Development drive shaft Engages when PCU is pushed in Development roller turns whenever main motor is on No devel...

Page 58: ...More on Developer Mixing Mixing does the following Keeps the toner and developer evenly mixed Prevents lumps from forming Helps create a triboelectric charge on the toner The doctor blade splits the...

Page 59: ...Bias This machine uses a negative positive development system in which black areas of the latent image are at a low negative charge about 154 50 V and white areas are at a high negative charge about...

Page 60: ...ulled away so that toner can come out Cap Shutter Side of PCU More on Toner Bottle Replenishment When the bottle is placed in the machine the shutter opens to allow toner to go into the development un...

Page 61: ...coh com Slide 61 Toner Supply Motor Toner supply motor turns the bottle To supply fresh toner to development unit toner supply motor turns on Spiral grooves help toner to move towards bottle exit Tone...

Page 62: ...on Toner Supply Input to the Development Unit Toner enters the development unit through the shutter This shutter is opened when a bottle is put in the machine as explained earlier Note where the new...

Page 63: ...f Update There are four modes for controlling toner supply which can be changed with by SP 2921 The factory setting is SP2921 0 Basically the toner concentration in the developer is controlled using t...

Page 64: ...l setting the TD sensor is set so that the TD sensor output is the value of SP 2926 default 2 4 V This value will be used as the standard reference voltage Vts of the TD sensor Toner Concentration Mea...

Page 65: ...tern on the drum are checked compensating for any variations in the reflectivity of the ID sensor pattern or the reflectivity of the drum surface The ID sensor pattern is made on the drum by the charg...

Page 66: ...ensor output Vsp Vsg Vts or the current Vref Vt Toner Supply Determination The reference voltage Vts or Vref is the threshold voltage for determining whether or not to supply toner If Vt becomes great...

Page 67: ...e following conditions occur Vsg 2 5V Vsg 3 5V when maximum power 979 is applied Vsp 2 5V Vsg Vsp 1 0V Vt 4 5V or Vt 0 2V The above ID sensor values can be checked using SP 2221 When this is detected...

Page 68: ...sensor output current and reference voltages If near end is detected toner is added for a short period adjustable with SP 2 923 If the toner level does not recover toner end is after 50 more copies t...

Page 69: ...is detected Toner is added after the copy job If supply recovers to Vt level 5 near end is cancelled Otherwise toner end occurs after 50 copies If Vt level 7 is detected 3 consecutive times toner end...

Page 70: ...Model K C3 5L 70 Ricoh Co Ltd http www ricoh com Slide 70 SP Modes Development SP 2201 Development bias printing ID sensor pattern creation SP 2802 Forced developer agitation No additional notes...

Page 71: ...c if an ID sensor error occurred SP 2908 Forced toner supply SP 2921 Toner supply mode sensor control fixed control SP 2922 Toner supply motor on time sensor control mode SP 2925 Toner supply motor on...

Page 72: ...ar end End SP 2213 Number of copies between near end and end 20 or 50 default 50 SP 2923 Toner supply motor on time during recovery from end near end SP 2928 Clears the toner end condition Normally do...

Page 73: ...Model K C3 5L 73 Ricoh Co Ltd http www ricoh com Slide 73 Lab Work Remove the ID sensor FSM Replacement and Adjustment Image Transfer Image Density Sensor No additional notes...

Page 74: ...Model K C3 5L 74 Ricoh Co Ltd http www ricoh com Slide 74 Model K C3 5L Service Training 11 Drum Cleaning Toner Recycling No additional notes...

Page 75: ...ade s edge More on Drum Cleaning This machine uses a counter blade but no brush The blade scrapes toner off the drum and a toner collection coil picks up toner from the top of the pile and carries it...

Page 76: ...ak up any blockages of toner Note the two slots in the development unit The one on the left receives fresh toner from the cartridge The one on the right receives the recycled toner New and recycled to...

Page 77: ...Model K C3 5L 77 Ricoh Co Ltd http www ricoh com Slide 77 12 Transfer and Separation Model K C3 5L Service Training No additional notes...

Page 78: ...8 Overview Transfer roller is always in contact with drum Drum curvature pick off pawl and discharge plate separate paper from drum Transfer Roller Discharge Plate Pick off Pawl Transfer Roller Transf...

Page 79: ...Ricoh Co Ltd http www ricoh com Slide 79 Drive Drum drives Transfer Roller through gear Transfer Roller always contacts drum There is no touch and release mechanism Main Motor Transfer roller Drum No...

Page 80: ...t area Prevents positively charged toner remaining on drum from transferring to roller Then high current is supplied amount depends on paper size and type This transfers toner to paper Finally at trai...

Page 81: ...er roller if A paper jam occurred The paper size is smaller than the printed image The transfer roller must be cleaned to prevent toner from being transferred from the roller to the back side of copie...

Page 82: ...ttp www ricoh com Slide 82 Separation Drum curvature and Discharge Plate separate paper from drum There is no adjustment for discharge voltage in this machine because discharge plate is grounded Disch...

Page 83: ...es SP 2301 Transfer current SP 2301 1 Paper tray Normal paper SP 2301 2 By pass tray For special thick paper SP 2301 4 During transfer roller cleaning SP 2906 Image writing position shift SP 2996 Tran...

Page 84: ...Model K C3 5L 84 Ricoh Co Ltd http www ricoh com Slide 84 13 Paper Feed Model K C3 5L Service Training No additional notes...

Page 85: ...hen the tray is pulled out Note the functions of the two relay sensors The by pass tray is not shown on the diagram The by pass tray can handle thick paper this mode is also for OHPs and special paper...

Page 86: ...chanism Paper feed clutches transfer main motor drive to paper feed roller When paper feed clutch turns on feed roller starts to feed paper Paper feed clutch stays on until shortly after registration...

Page 87: ...del K C3 5L 87 Ricoh Co Ltd http www ricoh com Slide 87 Feed and Separation Feed roller and friction pad system Pressure of friction pad not adjustable Paper feed roller Friction pad No additional not...

Page 88: ...com Slide 88 Tray Lift When the tray is closed projection on copier frame pushes slider off bottom plate hook Slider is on bottom part of tray After slider comes off compressed springs lift bottom pla...

Page 89: ...Model K C3 5L 89 Ricoh Co Ltd http www ricoh com Slide 89 Paper end sensor feeler falls through slot in bottom plate when there is no paper Paper End Detection No additional notes...

Page 90: ...tandard paper size set the dial to the mark Then set the size with a User Tool System Settings Tray Paper Settings Tray Paper Size The machine disables paper feed from the tray if the paper size canno...

Page 91: ...on Paper Size Detection The side guides contain ratchets that turn a gear wheel at the center of the sensor The gear wheel contains terminals The output of the sensor changes when the gear wheel rota...

Page 92: ...n a full tray is pushed in too strongly More on Side Fences If the tray is full of paper and it is pushed in strongly the fences may deform or bend This may cause the paper to skew or the side to side...

Page 93: ...off so that the paper buckles against the registration roller SP 1003 can be used to adjust the amount of buckling The paper feed clutch can come on again to help paper feed get started after registr...

Page 94: ...or various paper feed stations SP 1002 Side to side registration for various paper feed stations SP 4010 11 Scanner registration SP 6006 ADF registration SP 1003 Paper feed timing Adjusts buckle at th...

Page 95: ...Model K C3 5L 95 Ricoh Co Ltd http www ricoh com Slide 95 Lab Work Practice the removal procedures for the paper feed section FSM Replacement and Adjustment Paper Feed Section No additional notes...

Page 96: ...Model K C3 5L 96 Ricoh Co Ltd http www ricoh com Slide 96 14 Fusing Model K C3 5L Service Training No additional notes...

Page 97: ...identical Pressure Roller has a Cleaning Roller Thin walled hot roller No oil supply mechanism Components 1 Paper exit roller 2 Exit sensor 3 Hot roller strippers 4 Pressure roller 5 Cleaning roller...

Page 98: ...L 98 Ricoh Co Ltd http www ricoh com Slide 98 Fusing unit is driven by main motor through gears Paper exit rollers are driven by main motor through a timing belt Main motor Exit rollers Drive No addit...

Page 99: ...from standby energy saver mode if the temperature is above 18 C the solenoid turns on and disengages the drive gear which cuts the drive to the fusing unit If the solenoid is off the drive gear is en...

Page 100: ...0 If paper creases in fusing unit move guide to right Fusing Entrance Guide Shaft More on Entrance Guide Shaft The entrance guide can be moved to prevent creasing Moving the guide to the right feeds t...

Page 101: ...C3 5L 101 Ricoh Co Ltd http www ricoh com Slide 101 The springs apply pressure between hot roller and pressure roller The springs can be moved Default position is at end Pressure Roller No additional...

Page 102: ...3 5L 102 Ricoh Co Ltd http www ricoh com Slide 102 Cleaning Roller Cleaning Roller is always in contact with Pressure Roller It removes toner and paper dust Cleaning Roller Pressure Roller No addition...

Page 103: ...cond More on Fusing Temperature Control The cpu switches the fusing lamp on off depending on the thermistor output The cpu determines how long to keep the lamp on during the next second by comparing t...

Page 104: ...icoh com Slide 104 Fusing Lamp Power Supply Soft Start Full power is applied to the fusing lamp gradually not all at once Machine gradually allows more power to fusing lamp over a number of zero cross...

Page 105: ...ting Affects The CPU checks the output from the fusing thermistor once every 1 5 seconds default setting The CPU compares the current and previous temperatures Based on the result it then decides how...

Page 106: ...r than 100 C The customer must wait this extra time whenever the machine is switched on or recovers from energy saver mode With fusing idling set to off the machine just waits for the roller to reach...

Page 107: ...the rollers becomes higher than at the center This is because paper is not drawing heat away from the ends Then if a wider paper is used soon after the higher temperature could cause offset to appear...

Page 108: ...feature described on the previous slide shows how the machine prevents the ends of the hot roller from getting too hot when copying using narrow width paper The feature on this slide prevents the cent...

Page 109: ...the fusing feature reaches 250 C the controller cuts off the 24V line The fusing lamps are on the 24V line Third Level Two thermostats are attached on each line of the two fusing lamps four thermosta...

Page 110: ...off SP 1105 Fusing unit temperatures SP 1106 Displays the current fusing unit temperature SP 1107 Soft start adjustment SP 1108 Fusing temperature control cycle 1 1 5 or 2 seconds SP 1109 Nip band wi...

Page 111: ...Model K C3 5L 111 Ricoh Co Ltd http www ricoh com Slide 111 Lab Work Practice the removal procedures for the fusing section FSM Replacement and Adjustment Fusing No additional notes...

Page 112: ...Model K C3 5L 112 Ricoh Co Ltd http www ricoh com Slide 112 15 Paper Exit Model K C3 5L Service Training No additional notes...

Page 113: ...Model K C3 5L 113 Ricoh Co Ltd http www ricoh com Slide 113 Paper exit rollers are driven by main motor through a timing belt Main motor Exit rollers Drive No additional notes...

Page 114: ...Model K C3 5L 114 Ricoh Co Ltd http www ricoh com Slide 114 Model K C3 5L Service Training 16 Duplex This section is for the K C3 5Lcd only The K C3 5Lb is a simplex machine...

Page 115: ...oes to the inverter table Then it is reversed through the duplex unit and back into the machine to print side 2 Duplex inverter rollers Exit rollers Junction gate Duplex entrance sensor Upper transpor...

Page 116: ...r drives the inverter roller At the entrance to the inverter table Duplex transport motor drives the rollers in the duplex unit Duplex inverter roller Duplex inverter motor Upper transport roller Dupl...

Page 117: ...K C3 5L 117 Ricoh Co Ltd http www ricoh com Slide 117 Duplex Entrance Inverter gate solenoid Switches on to send paper to the inverter table Stays off to feed paper out of the machine No additional n...

Page 118: ...duplex unit to the registration rollers Then the second side is printed and the page is fed out Duplex inverter rollers and inverter sensor Registration rollers More on Duplex Feed Path While the pap...

Page 119: ...aving Longer than A4 LT SEF Only one page can pass through at a time that is no interleaving is done A4 LT SEF or shorter Two pages can go through the duplex unit at once this is known as interleaving...

Page 120: ...Model K C3 5L 120 Ricoh Co Ltd http www ricoh com Slide 120 Lab Work Practice the removal procedures for the duplex unit FSM Replacement and Adjustment Duplex Unit No additional notes...

Page 121: ...Model K C3 5L 121 Ricoh Co Ltd http www ricoh com Slide 121 17 Peripheral Devices Model K C3 5L Service Training No additional notes...

Page 122: ...Model K C3 5L 122 Ricoh Co Ltd http www ricoh com Slide 122 ADF DF2000 No additional notes...

Page 123: ...sure glass is a narrow glass to the left of the exposure glass The ADF does not use the main exposure glass unless the user selects book mode and places the originals on the glass in which case the AD...

Page 124: ...Slide 124 Original Size Detection Two width sensors and two length sensors All sensors are reflective photosensors See Supported Paper Sizes under Specifications in the FSM See Original Size Detection...

Page 125: ...Slide 125 Pick up Mechanism Original set sensor detects when original has been placed in feeder Pick up solenoid drops pick up roller onto top sheet of originals For details see Pick up and Separation...

Page 126: ...Ltd http www ricoh com Slide 126 Separation Mechanism Transport motor drives all rollers Feed clutch drives pick up roller and feed belt For details see Pick up and Separation in the DF2000 service m...

Page 127: ...ww ricoh com Slide 127 Transport and Feed out Transport motor feeds original through scanner Motor speed depends on reproduction ratio For details see Original Transport and Exit Mechanism in the DF20...

Page 128: ...ww ricoh com Slide 128 ADF Sensors Note Do not cover above sensors with your hands or place objects on them Doing so could cause Paper size to be detected incorrectly Paper misfeed error message to ap...

Page 129: ...Model K C3 5L 129 Ricoh Co Ltd http www ricoh com Slide 129 SP Modes SP 6006 Registration SP 6009 ADF free run SP 6901 APS sensor display for the ADF No additional notes...

Page 130: ...Model K C3 5L 130 Ricoh Co Ltd http www ricoh com Slide 130 ARDF DF2010 No additional notes...

Page 131: ...allows duplex copying and stacking in the correct order after scanning The DF exposure glass is a narrow glass to the left of the exposure glass The ARDF does not use the main exposure glass unless th...

Page 132: ...at the component layout diagrams Mechanical component layout Drive layout Go to your machine and find the components on the diagrams Note the two motors DF Feed DF Transport and the clutch DF Feed Th...

Page 133: ...d This sensor monitors the stack of originals in the feeder and detects when the trailing edge of the last page has been fed in This stops the copier from feeding an unwanted extra sheet of copy paper...

Page 134: ...ition More on Original Size Detection The width sensor has four possible outputs as shown in the diagram in the manual As pointed out earlier the user must position the guides correctly The link at th...

Page 135: ...ricoh com Slide 135 Pick up and Separation Pick up solenoid Lifts the entrance guide to lift the originals to the pick up roller Transport motor Drives all the rollers Feed clutch Drives the pick up r...

Page 136: ...Single sided Originals Study the path of paper through the DF The machine scans the original through the DF exposure glass The original stops at the registration sensor However there is no registrati...

Page 137: ...ww ricoh com Slide 137 Original Transport and Exit Double sided Originals 1 Original exit sensor When the original exit sensor detects the leading edge the junction gate opens and the original goes to...

Page 138: ...d http www ricoh com Slide 138 Original Transport and Exit Double sided Originals 2 When the paper is in the reverse tray the DF feed motor reverses and the reverse roller feeds the original back into...

Page 139: ...39 Original Transport and Exit Double sided Originals 3 The reverse side is scanned The original is fed to the reverse tray again The ARDF will reverse the page once more so that the pages of the orig...

Page 140: ...Model K C3 5L 140 Ricoh Co Ltd http www ricoh com Slide 140 Original Transport and Exit Double sided Originals 4 The page is fed in from the reverse tray and out to the exit tray No additional notes...

Page 141: ...Ricoh Co Ltd http www ricoh com Slide 141 SP Modes SP 6006 Registration SP 6009 ARDF free run SP 6010 Stamp position adjustment in the sub scan direction only Sp 6901 APS sensor display for the ARDF N...

Page 142: ...ab Work Practice removal and replacement procedures see Replacement and Adjustment in the DF2010 Service Manual Do any of the procedures that you think that you need to practice Pay attention to all n...

Page 143: ...Model K C3 5L 143 Ricoh Co Ltd http www ricoh com Slide 143 One Tray Paper Tray Unit PS460 No additional notes...

Page 144: ...manual Overall layout Drive layout Go to your machine and find the components on the diagrams More on Mechanical Components The feed roller is part of the tray When the user pulls out the tray paper c...

Page 145: ...diagram in the Paper Tray 1 PS460 Service Manual Go to your machine and find the components in the diagram More on Electrical Components There are two motors one to lift the tray and one to drive the...

Page 146: ...per feed motor drives the feed roller There is no clutch Feed roller Friction pad Spring The paper tray holds 500 sheets The paper feed roller drives the top sheet of paper from the paper tray to the...

Page 147: ...when the tray is pushed into the machine One shaft lifts the stack The other shaft controls the paper feed pressure Study the mechanism on your machine More on Paper Lift This mechanism has two purpos...

Page 148: ...Co Ltd http www ricoh com Slide 148 Paper Lift Pressure Application Study the mechanism on your machine Refer to the Paper Tray 1 PS460 Service Manual Study the description while referring to the diag...

Page 149: ...pulls the actuator into the lift sensor The pressure of the feed roller on the paper is now too high so the lift motor now reverses to reduce this pressure It reverses for 200 ms or 600 ms depending...

Page 150: ...Model K C3 5L 150 Ricoh Co Ltd http www ricoh com Slide 150 Paper End Detection Paper end sensor feeler Falls through a slot in the bottom plate when there is no paper No additional notes...

Page 151: ...ional paper tray units The two paper height sensors detect the amount of paper in the tray The actuator is attached to the bottom plate pressure lever The lift motor rotates to increase the feed press...

Page 152: ...ide 152 Paper Size Detection Paper size switch detects the position of the dial selected by the user position Use to select a non standard paper size Input the size with User Tools System Settings Tra...

Page 153: ...n a full tray is pushed in too strongly More on Side Fences If the tray is full of paper and it is pushed in strongly the fences may deform or bend This may cause the paper to skew or the side to side...

Page 154: ...com Slide 154 End Fences End fence The bottom plate lifts as the paper is used up The fence is connected to the bottom plate and it moves forward when the bottom plate lifts This keeps the edges of th...

Page 155: ...Model K C3 5L 155 Ricoh Co Ltd http www ricoh com Slide 155 SP Modes SP 1908 Paper lift adjustment No additional notes...

Page 156: ...m Slide 156 Lab Work Practice replacement procedures Refer to the Paper Tray 1 PS460 Service Manual Do any of the procedures that you think that you need to practice Pay attention to all notes caution...

Page 157: ...Model K C3 5L 157 Ricoh Co Ltd http www ricoh com Slide 157 Two Tray Paper Tray Unit PS450 No additional notes...

Page 158: ...our machine and find the components in the diagrams More on Mechanical Components The feed roller is part of the tray When the user pulls out the tray paper caught between the feed roller and friction...

Page 159: ...PS460 Service Manual Go to your machine and find the components on the diagram More on Electrical Components There are three motors one lift motor for each tray and one to drive the rollers in both th...

Page 160: ...er The appropriate paper feed clutch turns on to transfer drive from the motor to the rollers in the required tray The relay clutch drives the relay roller which feeds paper up from the lower tray Fee...

Page 161: ...de 161 Mechanisms The following are the same as for the one tray unit Paper Lift The only difference is that there are adjustment SPs for both trays Paper End Detection Paper Height Detection Paper Si...

Page 162: ...Model K C3 5L 162 Ricoh Co Ltd http www ricoh com Slide 162 SP Modes SP 1908 Paper lift adjustment No additional notes...

Page 163: ...de 163 Lab Work Practice the replacement procedures in the Two Tray Paper Tray Unit PS460 Service Manual Do any of the procedures that you think that you need to practice Pay attention to all notes ca...

Page 164: ...Model K C3 5L 164 Ricoh Co Ltd http www ricoh com Slide 164 One Bin Tray PT340 No additional notes...

Page 165: ...tray It isn t a sorter The tray does not move from side to side Tray capacity 100 sheets With more than one output tray the user can for example direct copy mode output to the standard output tray an...

Page 166: ...ee the component layout diagrams in the One Bin Tray PT340 Service Manual Go to your machine and find the components on the diagrams Note The tray motor drives the components of the one bin tray The p...

Page 167: ...first sheet of paper passes the copier s registration sensor The tray motor turns on to drive the exit rollers The junction gate solenoid turns on to open the junction gate After the last sheet has b...

Page 168: ...y Tray capacity 100 sheets Paper cannot be fed from the bypass tray to the one bin tray More on Paper Detection If the paper source is the bypass tray the output will not go to the one bin tray even i...

Page 169: ...y has been moved away from the main body to remove a paper jam A cover open message appears This message also appears if the one bin tray becomes disconnected from the copier After removing a paper ja...

Page 170: ...coh com Slide 170 Lab Work Practice removal procedures see One Bin Tray PT340 service manual Do any of the procedures that you think that you need to practice Pay attention to all notes cautions and w...

Page 171: ...Model K C3 5L 171 Ricoh Co Ltd http www ricoh com Slide 171 18 Maintenance Model K C3 5L Service Training No additional notes...

Page 172: ...has PM intervals of 60 K and 120 K Reset the PM counter after finishing PM SP 7804 1 See How to Reset the PM Counter in the FSM SP Modes SP 5501 1 PM alarm 0 No alarm SP 7803 Current PM counter status...

Page 173: ...y card Model K C3 5L memory updating is done by Flash memory card for BICU firmware update SD card for GDI controller update Refer to the FSM for update procedure details FSM Service Tables Firmware U...

Page 174: ...Model K C3 5L 174 Ricoh Co Ltd http www ricoh com Slide 174 19 Troubleshooting Model K C3 5L Service Training No additional notes...

Page 175: ...M to flash memory Memory All Clear SP 5801 More on Memory Clear This is only done after replacing the NVRAM or recovering from NVRAM problems The NVRAM will have to be replaced if you want to install...

Page 176: ...3 5L 176 Ricoh Co Ltd http www ricoh com Slide 176 Self Diagnostics The self diagnostics procedure is automatically done just after power has been switched on SP 7832 Result of diagnostics No addition...

Page 177: ...Model K C3 5L 177 Ricoh Co Ltd http www ricoh com Slide 177 Printing SMC Reports SP 5990 Engine No additional notes...

Page 178: ...mponent Defects in the Field Service Manual Blown fuse table See Blown Fuse Conditions in the Field Service Manual If a problem concerns electrical circuit boards first disconnect then reconnect the c...

Page 179: ...onditions section of the Field Service Manual FSM Appendices Service Call Conditions There are four levels of SC codes Reset Level A codes by first entering SP mode and then switching the machine off...

Page 180: ...le Increase if the user complains about flickering room lights However fusing lamp errors may not be detected SP 1903 Re energizes the feed clutch Increase the value if jams occur when feed restarts a...

Page 181: ...per trays SP 2301 4 Increase if there is dirty background on the rear side SP 2996 Enable this if there is dirty background on the reverse side of the first copy of a job The transfer roller will be c...

Page 182: ...Troubleshooting 3 3 SP 2906 Tailing correction Adjust this if there are ghosts of thin vertical lines further down page from where vertical lines on image stop SP 6910 ADF shading interval Reduce sett...

Page 183: ...183 SP Modes Tests SP 1007 By pass paper size sensor output display SP 4902 Exposure lamp on SP 5001 Operation panel indicators on SP 5803 Input tests SP 5804 Output tests SP 5902 Test pattern printou...

Page 184: ...Model K C3 5L 184 Ricoh Co Ltd http www ricoh com Slide 184 SP Modes Free Runs SP 4013 Scanner with lamp on SP 5802 Scanner and printer SP 5901 Printer SP 6009 ADF ARDF No additional notes...

Page 185: ...Model K C3 5L 185 Ricoh Co Ltd http www ricoh com Slide 185 20 Environmental Conservation Model K C3 5L Service Training No additional notes...

Page 186: ...C3 5L 186 Ricoh Co Ltd http www ricoh com Slide 186 Promote Use of Energy Saving Features Energy Saver Mode Proper use of energy saver modes saves energy and is environmentally friendly No additional...

Page 187: ...Operation Mode Ready Mode Off Mode Timer Starts Energy Saver Timer Auto Off Timer 1 240 min After 240 min from last job Plug In Time Energy Saving Energy saver mode should be utilized to save energy...

Page 188: ...User Tools System settings Timer setting Energy saver timer 1 240 min Energy Saver Mode Default setting 1minute Auto off timer 1 240 min Off Mode Default setting 1 minute Example Energy saver timer 1...

Page 189: ...ww ricoh com Slide 189 Energy Saver Modes 3 3 Recommendation We recommend that default settings be used If customer requests settings change please explain Energy costs could increase The environment...

Page 190: ...machine can be estimated 8941 001 Operating mode 8941 002 Standby mode 8941 003 Panel off mode 8941 005 Off sleep mode This should only be used as a reference value because power consumption specifica...

Page 191: ...P 8941 001 005 Machine Status 3 Find amount of time spent in each mode Subtract earlier measurement from later measurement and convert result to hours 4 Power consumption figures for each model are ac...

Page 192: ...culations 1 35 7 0 193 4 520377 508776 005 Off mode Time Off Sleep 26 71 Total 6 13 29 214 0 62 1 75111 71386 003 Energy Save Time Energy save 6 72 214 0 31 4 308046 306163 002 Standby Time Stand by R...

Page 193: ...Model K C3 5L 193 Ricoh Co Ltd http www ricoh com Slide 193 End of Course...

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