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C252 SERVICE MANUAL

1. 4 9 4 4 5 PAPER FEED JAM A JAM LOCATION INDICATOR amp 84 4 10 4 4 6 PAPER DELIVERY JAM C JAM LOCATION INDICATOR 4 11 C252 SERVICE TABLES 9 SERVICE TABLES 15 5 ee nie 5 1 5 1 SERVICE PROGRAM MODE ur 5 1 5 1 1 SERVICE PROGRAM MODE 5 1 5 1 2 MAIN MENU NO 1 INPUT 5 2 5 1 3 MAIN MENU NO 2 OUTPUT 2 5 3 5 1 4 SP2 41 THERMAL HEAD SIGNAL OUTPUT VHD SIGNAL 5 3 5 1 5 MAIN MENU NO 3 TEST MODE 5 4 5 1 6 SP3 1 FIRMWARE SUFFIX INFORMATION 5 4 5 1 7 MAIN MENU NO 6 ADJUSTMENT 5 4 5 1 8 SP6 42 IMAGE ADJUSTMENT PATTERN 5 5 5 2 DIESSWITGHES Daren L Sa tender mee na Db dime emt Pd Del aas Der Dae oi 5 6 521 e e tte ee a rest 5 6 5 2 2 DIPSW101 NO 1 TO 4 PAPER REGISTRATION POSITION ADJUSTMENT susi a el oto npe roe 5 7 5 2 3 DIPSW101 NO 5 TO 8 MASTER WRITING POSITION ADJUSTMENT nias n d 5 8 5 2 4 DIPSW102 NO 1 TO 3 THERMAL HEAD ENERGY CONTROL 5 9 5 2 5 DIPSW103 NO 1 TO 4 SCANNING SPEED ADJUSTMENT 5 10 5 2 6 DIPSW103 NO 5 TO 8 MASTER FEEDING SPEED ADJUSTMENT Here een 5 11 DETAILED DESCRIPTIONS 6 DETA
2. A Panel x 4 EY x 2 B Front cover 2x 6 C Front door 2 x 4 SM 3 1 C252 COVERS 3 2 2 REAR COVER A JD NE LAS A Rear cover amp x 5 SM 3 2 C252 BOARDS 3 3 BOARDS 3 3 1 MPU Rear cover 3 2 2 A MPU 2 x 8 x 8 NOTE 1 Check the dip switch settings on the old MPU and make the dip switch settings B the same on the new MPU 2 Adjust the master end sensor 3 5 4 after installing the new MPU 3 Adjust the ink detection 3 9 6 after installing the new MPU 4 Ensure that the EPROM on the MPU contains the correct firmware SM 3 3 C252 5 X 75 Adjustment BOARDS 3 3 2 PSU A Rear cover 3 2 2 A PSU 4 x 6 EY x 3 NOTE When the PSU is replaced the thermal head voltage returns to the default Adjust the thermal head voltage e 3 5 3 after installing the new board C252 3 4 SM SCANNER jueunsn py pue 252 3 5 3 4 SCANNER 3 4 1 COVERS EV B A Right side cover 4 x 2 B Scanner cover 2 x 4 SM SCANNER 3 4 2 1ST 2ND FEED ROLLER CIS CONTACT IMAGE SENSOR A Upper cover amp x 4 B Guide x 2 CIS EP x 1 1st feed roller x 3 E 2nd feed roller x 3
3. Mechanism The user moves the paper feed tray adjustment lever A up or down Link and spring s Plate B Lift or lower the paper table e When the user raises the paper feed tray adjustment lever A the plate B lifts the paper table to the paper feed position Paper end detection There is no paper end sensor The registration sensor detects when the paper on the table runs out Then the following three indicators light jam indicator Sl Es NOTE This is the same condition as the paper jam detected during the refeed process section 6 7 7 the machine cannot distinguish between these two conditions The user must check for both a paper jam and a paper end condition at this time After the front cover is opened and closed only the paper end indicator will remain lit C252 6 30 SM Table side fence lock mechanism The lock levers A hold the side fences in position Side fence friction pads A e The two side fence friction pads A are included as accessories These not used normally but if paper multi feed frequently occurs the friction pads can be installed to apply stopping pressure to the paper These are especially useful when thin paper is used The users can install the side fence friction pads if they are using thin paper SM 6 31 C252 75 gt E Descriptions PAPER DELIVERY 6 8 PA
4. 1 B Delivery belts C Paper exit sensor EY x 1 SM 3 31 PAPER DELIVERY C252 5 X and Adjustment PAPER DELIVERY 3 10 3 VACUUM FAN MOTOR POSITION A B e Remove the paper delivery unit er 3 10 1 A For the China model B For other models C252 3 32 SM PAPER DELIVERY 3 10 4 EXIT PAWL ADJUSTMENT Purpose To ensure that the exit pawls can move out of the way of the drum master clamper while the drum is rotating Clearance adjustment Standard Within 1 15 0 15 mm e Front cover 3 2 1 Rear cover e 3 2 2 A 1 Loosen screw A then screw B in this order do not remove them Make sure that the bracket C becomes free from engagement and the cam follower D contacts the drum flange 2 Using a gap gauge measure the clearance E between the drum surface and the exit pawls It should be 1 15 0 15 mm If the clearance is not correct adjust the clearance by turning the bolt F 4 Reposition the bracket C and tighten the screws A and B Do the timing adjustment see the next section SM 3 33 C252 PR 5 X 75 Adjustment PAPER DELIVERY Timing adjustment Standard 0 or less than 0 5 mm CC e Front cover 3 2 1 Rear covers er 3 2 2 Do this after the clearance adjustment the procedure is on the next page C252 3 3
5. 0 2 SM 5 11 C252 DETAILED DESCRIPTIONS MECHANISM OVERVIEW 6 DETAILD SECTION DESCRIPTIONS 6 1 MECHANISM OVERVIEW 6 1 1 MAJOR PARTS 1 Tension roller 12 Exit pawl 2 Master feed roller 13 Transport belts 3 Platen roller 14 Vacuum fan motor 4 Thermal head 15 Paper delivery table 5 Master roll 16 Air knife fan motor 6 Paper feed roller 17 Master eject rollers E 9 7 Paper table 18 Master eject box a 8 Registration rollers 19 2nd feed rollers 9 Doctor roller 20 CIS Contact Image Sensor 10 Ink roller 21 1st feed rollers 11 Press roller SM 6 1 C252 MECHANISM OVERVIEW 6 1 2 ELECTRICAL COMPONENT LAYOUT 14 13 20 gt 80 2 252 6 2 SM 5 MECHANISM OVERVIEW Function Operation Panel Board Main Processing Unit MPU This board controls the operation panel Controls all machine functions both directly and through other boards Motors Power Supply Unit PSU Component Provides power to the machine Function Scanner Motor Drives the scanner Ink Pump Motor Drives the ink pump Master Feed Motor Feeds the master to the drum Cutter Motor Cuts the master Master Eject Motor Sends used masters into the master eject box Air Knife Fan Motor Rotates the fan to provi
6. 10 8 x 15 6 Minimum 90 x 140 mm 3 5 x 5 5 Original Weight 40 7 127 9 g m Copy Paper Size Maximum 275 x 395 mm 10 8 x 15 6 Minimum 90 x 140 mm 3 5 x 5 5 Copy Paper Weight 35 0 127 9 g m 10 to 30 C 47 1 127 9 g m More than 30 C Printing Speed 60 90cpm 2 steps Reproduction Rations Metric 141 122 115 93 87 82 71 Inch 155 129 121 93 77 74 65 Master Eject Box Capacity 30 masters Paper Capacity 500 sheets 80 g m 2016 Paper Delivery Tray Capacity 500 sheets 80 g m 2016 Power Source North America 120 V 60 Hz 2 0 Europe Asia 220 240 V 50 60 Hz 1 1 A Power Consumption 110 120V Less than 175W Less than 2 9A 220 240V Less than 175W less than 1 3A Noise Emission Operating Position Sound Power Level Standby Not above 22 5 db Copying 60 rpm Not above 64 db Copying 90 rpm Not above 68 db Sound Power Level Standby Not above 31 2 db Copying 60 rpm Not above 77 db Copying 90 rpm Not above 80 db Dimensions W x D x H Set up 1332 x 663 x 519 mm 52 5 x 26 1 x 20 5 Stored 582 x 663 x 519 mm 23 0 x 26 1 x 20 5 Master Processing Time 54 kg 119 11b Less than 45 seconds A4D 81 2 14D First Print Time Less than 47 seconds A4D 81 2 x 140 Leading Edge Margin 5mm 3mm Side Registration Adjustable Range 10m
7. set UNITS AFFECTED All C252 digital duplicators manufactured after the serial number listed below will have the new style MPU Base Bracket and Clamp installed during production MODEL NAME SERIAL NUMBER Ricoh JP730 F3130770001 INTERCHANGEABILITY CHART OLD and NEW parts can be used in both OLD and NEW parts CAN NOT be used in OLD machines NEW machines 2 OLD parts can be used in OLD and NEW machines NEW parts can be used in OLD and NEW machines OLD parts CAN NOT be used in NEW machines OLD parts CAN NOT be used in NEW machines 3 NEW parts CAN NOT be used in OLD machines Must be installed as a set on units manufactured prior to the S N cut in On units manufactured after the S N cut in or previously modified use the new part numbers individually Page 2012 Gestetner TECHNICAL SERVICE BULLETIN LALL BULLETIN NUMBER C252 002 11 24 2003 APPLICABLE MODEL GESTETNER 6123cp LANIER LDD730 RICOH JP730 SAVIN NA SUBJECT SERVICE MANUAL INSERT SA The Service Manual pages listed below must be replaced with the pages supplied The revised areas have been highlighted by an arrow gt 4 lt PAGES 1 4 Updated Information Installation Procedure UNITS AFFECTED All C252 duplicators manufactured after the serial number listed below will have the new style Styrene foam sponge installed during production MODEL NAME SERIAL NUMBER Gestetner 6123cp
8. 6 20 6 6 5 INK SUPPLY CONTRO ara ae eat 6 21 6 6 6 DETECTION OF MASTERS ON THE DRUM 6 22 6 7 PAPER after 6 23 br OVERVIEW too btc tee bte 6 23 6 7 2 PAPER FEED MECHANISM eee 6 24 6 7 3 PAPER FEED SEPARATION PRESSURE MECHANISM 6 25 6 7 4 REGISTRATION ROLLER 6 26 6 7 5 REGISTRATION SENSOR CLEANING 6 28 6 7 6 PRINTING PRESSURE 6 29 6 7 7 RE FEEDING MECHANISM rne 6 29 6 7 8 PAPER TABLE MECHANISM esee 6 30 60 PAPER DELIVERY ae 6 32 6 8 1 OVERVIEW ius n Ra 6 32 6 8 2 PAPER DELIVERY UNIT DRIVE 6 33 6 8 3 PAPER SEPARATION FROM THE 6 34 6 8 4 EXIT PAWL DRIVE 6 35 69 IIMINGERIART ere o 6 37 6 9 1 MASTER EJECT MASTER 6 37 6 9 2 MASTER WRAPPING ts ee ae 6 38 695 PRINTING Lise 6 39 SPECIFICATIONS SPECIFICATIONS se 7 1 1 GENERAL SPEGIFICGANONS es 7 1 252 iv SM Z IMPORTANT SAFETY NOTICES PREVENTION OF PHYSICAL INJURY 1 Before disassembling or asse
9. C252 3 6 SM 3 4 3 DOCUMENT SENSOR A Upper guide plate 2 x 2 B Document sensor x 1 3 4 4 SCANNER MOTOR A Scanner unit 2 x 5 EY x 3 B Scanner motor 2 x 2 EB x 1 SM 3 7 SCANNER C252 5 X 75 Adjustment MASTER FEED 3 5 MASTER FEED 3 5 1 MASTER MAKING UNIT A Master making unit x 2 EB x 5 C252 3 8 SM 3 5 2 THERMAL HEAD e Master making unit er 3 5 1 A Open the platen roller unit Thermal head upper cover amp x 2 Thermal head side cover x 1 e Close the platen roller unit D Thermal head EY x 2 SM 3 9 MASTER FEED C252 5 X 75 Adjustment MASTER FEED Installation If the following cautions not followed the thermal head will be installed incorrectly 1 Fitthe base s springs A over the protrusions B on the underside of the thermal head 5 points 2 While fitting the tops of the springs A over the protrusions on the underside of the thermal head hook the lock pawls C of the thermal head onto the base 3 lock pawls Make sure to set the front side the paper table side first 3 Make sure that all protrusions are properly fitted into the springs NOTE 1 Adjust the thermal head voltage e 3 5 3 after installing the new thermal head 2 Don t
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11. the original forward at the same time 2 The scanner motor stops at the original scanning position 3 After the master eject process is finished the master feed motor rotates and then the scanner motor turns on 4 The scanner motor 15 turned off when the original is fed 60 mm after the document sensor switches off C252 6 10 SM IMAGE PROCESSING 6 4 IMAGE PROCESSING 6 4 1 IMAGE PROCESSING FLOW Image processing is done by the IPU Image Processing Unit on the MPU board following the steps shown below Shading Correction Gamma Correction MTF Filtering Grayscale Processing Shading Correction Corrects errors in the signal level for each pixel using the white plate Gamma Correction Background erase MTF Filtering Reduces the contrast Grayscale Processing 5 St 38 og Compares each pixel with surrounding pixels to the image e Text mode Binary processing e Photo mode Error diffusion SM 6 11 C252 MASTER FEED 6 5 MASTER FEED 6 5 1 OVERVIEW The master feed unit makes an image on the master and feeds the master to the drum r EIT Digital Duplicators Duplicating Process Master Feeding Procedure The machine feeds the master from the master roll A The thermal head B burns plots holes to create an image on the master Clamper C opens The drum is at the master feed position The clamper clamps the le
12. Lanier LDD730 F3130770001 Ricoh JP730 Copyright 2003 RICOH Corporation All rights reserved INSTALLATION PROCEDURE Rev 11 2003 Installation Procedure NCAUTION To avoid serious injury do not connect the power plug to the machine until you are instructed to do so 1 Unpack the machine and remove all the wrapping 2 Remove all filament tape and string securing the covers and units as shown above Important note for installation A Styrene foam sponge is used to ensure that the rear shipping tape stays properly fixed in place which prevents the printing pressure release lever from unlocking At installation please remove the rear tape by pulling the portion shown in the photo below toward the front of the machine Rear Tape Remove the tape and tag securing the Press Roller during transport If they are not removed paper jams or blank images may occur due to the lack of pressure on the Press Roller and the tape may stick to the drum screen or Press Roller Front Tape Tag C252 1 4 SM RICOH IM lt TECHNICAL SERVICE BULLETIN BULLETIN NUMBER C252 003 03 29 2005 APPLICABLE MODEL GESTETNER NA LANIER NA RICOH JP730 SAVIN NA SUBJECT BLACK LINE ON PRINTOUT SYMPTOM The left or and right edges of the original can be seen on the printout as black lines Paper feed direction CAUSES Cause 1 The pape
13. Registration Sensor Detects paper approaching the registration roller Document Sensor Detects the leading edge of the original to 15 determine when to turn off the scanner motor Checks for original misfeeds 16 Detects when the pressure plate is at home position 17 Pressure Plate Limit Sensor Detects when the pressure plate is in the lowest position 18 Master Eject Sensor Detects used master misfeeds 19 Drum Master Sensor Detects if there is a master on the drum 24 Eject Box Set Sensor Checks ifthe master eject box is installed 25 Paper Exit Sensor Detects paper misfeeds at the exit 28 Clamper Open Sensor Detects ifthe clamper is in the open position 32 Feed Start Timing Sensor Determines the paper feed start timing 36 Clamper Closed Sensor Detects ifthe clamper is in the closed position 38 Master Eject Position Drum Detects when the drum is at the master eject HP Sensor position Others Component Function Contact Image Sensor CIS This sensor reads and converts the light reflected from the document into an analog video signal Thermal Head Burns the image onto the master Paper Feed Clutch Transmits main motor drive to the paper feed rollers at the appropriate time C252 6 4 SM 6 1 3 DRIVE LAYOUT Master Eject Motor Scanner Motor Pressure Plate Motor Clamper Motor Main Motor Registration Motor NO N gt Master F
14. Solutions Center FTP Site at http tsc ricohcorp com Be sure to check the README file for important notes and explanations NOTE Refer to Facts Line Bulletin FL002 and Publication Bulletin 023 for more information about the FTP Internet Web Site and EPROM Flash Card Exchange program The revised areas have been highlighted by an arrow gt TABLE OF CONTENTS gt Firmware Modification History sss 2 gt Firmware Modifications sss 2 Copyright 2003 RICOH Corporation All rights reserved Page 1 of 2 JYvmNi Firmware History for C252 FIRMWARE MODIFICATION HISTORY 2525105 Check Sum C2525105F bin 56BA F3130970947 C2525105E bin 56B6 April 2003 production D C2525105D bin 6917 1st Mass Production FIRMWARE MODIFICATIONS Changed the binary processing data to darken the image density of orange when selected the F letter and darker modes Changed the gamma correction data to darken the image density in photo mode 151 Mass Production 2 of 2
15. center 2 While the gap gauge is inserted hold the doctor and ink rollers with your fingers in order to stop the rollers from rotating 3 While the gap gauge is inserted hold the end of the gap gauge 2 Ifthe gap is out of the standard loosen the screw B and adjust the gap by turning the cam bushing C for the front and for the rear NOTE Make sure to repeat the adjustment for both ends of the rollers C252 3 28 SM DRUM 3 9 6 INK DETECTION ADJUSTMENT Purpose To ensure thatthe CPU detects a no ink condition CAUTION Before attempting this procedure wipe off the ink around the ink roller To do this set SP3 6 Ink Detection to OFF and feed paper until the ink ends The setting value returns to default value if the power is switched off on Standard 4 0 0 2us e Rear cover 3 2 2 1 Access SP6 40 2 Turn VR101 A on the MPU board until the display is 4 0 0 2u 4 0 0 2us NOTE When the drum has ink inside the machine displays SM 3 29 C252 5 X 75 Adjustment PAPER DELIVERY 3 10 PAPER DELIVERY 3 10 1 PAPER DELIVERY UNIT e Rear cover 3 2 2 A Paper delivery cover x 5 B Paper delivery unit x 2 EY x 2 1 C252 3 30 SM 3 10 2 DELIVERY PAPER EXIT SENSOR e Remove paper delivery unit er 3 10 1 A Vacuum fan motor bracket amp x 4
16. correct position of the pulley 44 7 0 1mm Z nn 4 SY SM 3 37 C252 5 X 75 Adjustment FIRMWARE UPDATE 3 12 FIRMWARE UPDATE The firmware in the EPROM on the MPU can be upgraded replacing the EPROM Before upgrading the firmware check the current suffix version with SP3 1 Turn off the main switch and disconnect the power plug Remove the rear cover Replace the EPROM on the MPU Connect the power plug and turn on the main switch Qr er gw AN Access SP3 1 and confirm that the suffix version was changed C252 3 38 SM TROUBLESHOOTING 4 TROUBLESHOOTING 41 ERROR CODES Symptom ERROR CODES Possible cause Clamper error The MPU cannot detect the clamper position sensor signal open or closed within 3 0 seconds after the clamper motor turns on Clamper drive Clamper sensors Clamper motor Cutter error The cutter HP sensor does not turn on within 3 0 seconds after the cutter motor turns on Cutter drive Cutter switch Cutter motor Thermal Head ID Error The CPU detects on abnormal ID signal from the thermal head Thermal head MPU Thermal Head Overheat The temperature of the thermal head is greater than 54 C when the Start key is pressed Overheat wait for the thermal head to cool down Thermal head Main Motor error The CPU cannot detect the master eject position sensor drum HP si
17. displayed whenever the main switch is on Master End Sensor Open Master making can start even if there is no master roll but jam indicator will be lit Shorted The master end indicator is lit Right Side Cover Set Switch Open The open cover indicator is lit Shorted The master is made normally even if the right side cover is open Master Set Cover Sensor Open The D jam indicator is lit whenever the cover is not placed correctly Shorted The D and open cover indicator are lit Drum Set Connector Open E 06 is displayed whenever master is made Shorted The M and open cover indicators are lit Eject Box Set Sensor Open The master is fed to the eject box even if there is no eject box Shorted The E and open cover indicators are lit Cutter HP Sensor SM Open E 01 is displayed whenever master is made Shorted E 01 is displayed whenever the main switch is on 4 3 252 FUSE LED DIP SW AND TABLES 4 3 FUSE LED VR DIP SW AND TP TABLES 4 3 1 BLOWN FUSE CONDITIONS Main Board No Rate Possible cause FU101 Ink pump motor PSU Possible cause AC Line Main motor Main motor control board Paper feed clutch Air knife fan motor Front Rear pressure release solenoid Vacuum fan motor Ink pump motor Master eject motor Master Paper counter Conta
18. ink roller does not touch the metal screen when the machine is not printing 3 During printing the ink on the ink roller is applied to the paper through the holes in the screens and the master This happens when the press roller F under the drum moves up to press the drum screen and the master against the ink roller Digital Duplicators Ink Supply Control C252 6 20 SM DRUM 6 6 5 INK SUPPLY CONTROL A B Mechanism When the ink level is low the pins A do not touch the ink y The ink pump motor 6 6 3 keeps the ink level normal by supplying ink when the level 15 low NOTE 1 The ink detection pins A detect the capacitance between the ink roller and doctor roller 2 If the pins detect an insufficient amount of ink after activating the ink pump motor for 40 seconds a no ink condition is detected The add ink indicator on the operation panel will light 3 There is an ink supply mode which is useful when installing a new drum When the Clear Stop key is pressed while holding down the 0 key the drum turns 40 rotations to supply ink inside the drum 4 The ink roller blades D on both ends of the ink roller scrape off the built up ink on the ends of the ink roller 7 5 S 38 og SM 6 21 C252 DRUM 6 6 6 DETECTION OF MASTERS ON THE DRUM A Drum master sensor B Black patch on the screen C Black patch on the c
19. parts catalog with the following information OLD PART NO NEW PART NO DESCRIPTION C252 1170 C252 1172 Drive Support Plate C252 1171 Bearing Holder 0451 3006B Tapping Screw M3x6 DENOTES NEW ITEM NUMBER NOTE The new style Drive Support Plate Bearing Holder and Tapping Screws must be replaced as a set Copyright 2003 RICOH Corporation All rights reserved Page 1 of 2 Tech Service Bulletin C252 001 UNITS AFFECTED All C252 digital duplicators manufactured after the serial number listed below will have the new style Drive Support Plate Bearing Holder and Tapping Screws installed during production MODEL NAME SERIAL NUMBER Ricoh JP730 F3130770001 e UPDATE 2 MPU Base Bracket A clamp has been added to the harness for the Master Making Unit to ensure the harness does not get caught when the Rear Cover is closed An attachment opening for this new clamp has been added to the MPU Base Bracket Although there are a total of six MPU Base Brackets used on this machine the only one physically modified to support the new clamp is on the bracket shown below Please update your parts catalog with the following information REFERENCE OLD PART NO NEW PART NO DESCRIPTION C252 5608 C252 5615 MPU Base Bracket 1105 0348 Clamp DENOTES NEW ITEM NUMBER NOTE The new style MPU Base Bracket and Clamp must be replaced as
20. touch the surface of the thermal head with bare hands If you touch it clean the surface with alcohol 3 Don t touch the terminals of the thermal head connectors with bare hands C252 3 10 SM MASTER FEED 3 5 3 THERMAL HEAD VOLTAGE ADJUSTMENT NCAUTION This adjustment is always required when the thermal head or PSU has been replaced Purpose To maintain master making quality and extend the lifetime of the thermal head Standard Refer to the voltage value X printed on the thermal head The value varies from one thermal head to another The adjustment voltage should be between X and X 0 1 V Tools Circuit tester e Rear cover 3 2 2 Read the voltage value on the decal on the thermal head Ed oo amp off DNS o 2 lt 1 On the power supply unit PSU connect the positive terminal of a circuit tester to TP701 and the negative terminal to TP702 on the PSU CAUTION If the output and ground terminals touch each other the board will be damaged 2 Connect the power plug and turn on the main switch to access SP mode 5 1 1 Select SP2 41 Thermal head signal output 5 1 4 4 Press the key Power is continuously supplied to the thermal head which could damage the thermal head so press the clear stop key if you cannot finish the adjustment quickly Wait several seconds and repeat the procedure A beeper sounds while the power is being supplied
21. weakened D Tape do not lose it E Metal screen 2 x 12 C252 3 24 SM DRUM Installation Ed oo 28 3 2 73 lt Make sure that correct end of the metal screen is overlapping The right side overlaps as viewed from the non operation side as shown above The 4 screws holding the drum master clamper are longer than the 12 screws holding the metal screen although they are similar in appearance Be careful not to mix them up or use the wrong screws When installing the metal screen secure the trailing edge first with the 2 screws Then tighten the other screws while removing the slack from the screen Make sure that gap between the drum flanges and the screen is 0 3 mm or less as shown above The two holes A on the trailing side are round holes and the other holes are long holes to allow for the removal of the slack Position the springs B and C one each at the front and rear as shown when reinstalling the drum master clamper D Do not scratch the cloth screen or metal screen SM 3 25 C252 DRUM 3 9 4 INK PUMP ADJUSTMENT Purpose To ensure the smooth operation of the ink pump plunger by properly positioning its holder e Remove the drum Cloth screen 3 9 2 e Clamper Metal screen er 3 9 3 1 Remove the E ring A to free the plunger from the pump drive slider B 2 Loose the two screws securing the holder C Do not remove t
22. with entries in both of them use whichever comes first Symbol key C Clean R Replace L Lubricate A Adjust NWARNING Turn off the main power switch and unplug the machine before performing any procedure in this section o o gt 0 ec 55 otc e 5 5 Damp mee efefefel fe felg Damp 2nd Feed Role A Dry Cloth Shading Plate Expected White Plate life is 10k masters Master Feed Alcohol Ide I Sensor Paper Feed Damp Paper Food Roler Water or Fiction Pac faa Press Roler R C Alcohol ete tetet yen orn EE ry Got Water or Registration Rollers Registration Rollers E Paper Delivery Unit Motor Oil Bushings SAE x Hpo Paper Feed Clutch SM 2 1 C252 MAINTENANCE TABLE me Cloth Cloth Screen Damp pomo eee I el eb Damp NNN Drum Clamper Water Plate Magnet Alcohol C252 2 2 SM REPLACEMENT AND ADJUSTMENT GENERAL CAUTION 3 REPLACEMENT AND ADJUSTMENT 3 1 GENERAL CAUTION NCAUTION Turn off the main power switch and unplug the machine before attempting any of the procedures in this section 3 2 COVERS 3 2 1 PANEL FRONT COVERS Ed oo amp off DNS o 2 lt
23. 0 0 Hold down Clear Stop for more than three seconds Method 2 gt gt Combine Key 8 2 The SP number is displayed e g SP1 3 To exit SP mode press Clear Modes Recovery BI Using the SP mode SP command numbers can be entered directly 1 Using the number keys enter the desired main menu number then press the Enter key 2 Using the number keys enter the desired sub menu number then press the Enter key Enter the desired value using the number keys 4 Press the enter key to store the displayed setting SM 5 1 C252 SERVICE PROGRAM MODE 5 1 2 MAIN MENU NO 1 INPUT MODE Name Original Sensor Master End Sensor Ink Detection Signal Pressure Plate Home Position Sensor Pressure Plate Limit Position Sensor Master Eject Box Set Sensor Paper Exit Sensor Master Eject Sensor Drum Master Sensor Door Safety Switch Master Making Unit Set Sensor Cutter Home Position Sensor Feed Start Timing Sensor Master Eject Position Sensor Drum Set Signal Clamper Close Sensor Clamper Open Sensor Paper Registration Sensor Master Set Cover Sensor DIPSW 103 1 Use these SPs to test whether the DIPSW 103 2 DIP switches are working properly DIPSW 103 3 ON A e e DIPSW 103 4 DIPSW 103 5 y DIPSW 103 6 F DIPSW 103 7 12345678 DIPSW 103 8 DIPSW 101 1 DIPSW 101 2 DIPSW 101 3 DIPSW 101 4 DIPSW 101 5 DIPSW 101 6 DIPSW 101 7 DIPSW 101 8 DIPSW 102 1 DIPSW 102 2 DIPSW 102 3 DIPSW 102 4 DIPSW 102 5 DIPSW
24. 102 6 DIPSW 102 7 DIPSW 102 8 C252 5 2 5 1 3 MAIN MENU NO 2 OUTPUT MODE No Name Note 2 3 Master Eject Motor Press and hold the master making 2 6 Vacuum Fan Motor key to start the test Release the key 2 7 Air Knife Fan Motor to stop the test 2 9 Master Counter 2 10 Paper Counter 2 12 Ink Pump Motor 2 14 Pressure Release Solenoids 2 21 Exposure Lamp Xenon Lamp 2 22 Cutter Motor direction 2 23 Cutter Motor to Home 2 24 Cutter Motor direction 2 27 Main Motor to drum home position 2 28 Main Motor to master making position 2 36 Master Feed Motor 2 37 Scanner Motor 2 41 Thermal Head Signal Output VHD Signal 5 1 4 2 42 Paper Feed Clutch 2 44 Clamper Motor to close 2 45 Clamper Motor to open 2 46 Pressure Plate Motor to limit 2 47 Pressure Plate Motor to home position 2 48 Main Motor 30rpm 2 49 Main Motor 60rpm 2 50 Main Motor 90rpm 2 51 Paper Feed Motor 30rpm 2 52 Paper Feed Motor 60rpm 2 53 Paper Feed Motor 90rpm 5 1 4 SP2 41 THERMAL HEAD SIGNAL OUTPUT VHD SIGNAL Applies thermal head voltage Power is applied by pressing the key
25. 2 2 3 26 3 9 5 DOCTOR ROLLER GAP ADJUSTMENT 3 28 3 9 6 INK DETECTION 3 29 3 16 PAPER DELIVERY trinidad didas 3 30 3 10 1 PAPER DELIVERY UNIT ea 3 30 3 10 2 DELIVERY BELT PAPER EXIT 3 31 3 10 3 VACUUM FAN MOTOR POSITION nn 3 32 3 10 4 EXIT PAWL ADJUSTMENT ee 3 33 9 11 MAIN DRIVE L L u erat la dd ate role 3 36 3 11 1 MAIN DRIVE TIMING BELT ADJUSTMENT 3 36 3 11 2 MAIN MOTOR PULLEY 3 37 3 12 FIRMWARE UPDATE teu teer ee u 3 38 TROUBLESHOOTING TROUBEESHOOTING cisco race 4 1 4A ERROR CODES td 4 1 4 2 ELECTRICAL COMPONENT DEFECTS area 4 2 4 3 FUSE LED VR DIP SW AND TP TABLES 4 4 43 1 BLOWN FUSE CONDITIONS tto treno eoe tte 4 4 452 ED tne n E UM 4 4 433 i dp 4 4 454 ES POINTS iet tette atio 4 5 AS DIP SWITCHES ADA AA ettet ted 4 5 DETECTION Ss ct ett era era 4 6 4 4 1 MASTER EJECT JAM JAM LOCATION INDICATOR 4 6 4 4 2 SCANNER JAM P JAM LOCATION INDICATOR 4 7 4 4 3 MASTER FEED JAM D JAM LOCATION INDICATOR 4 8 4 4 4 DRUM JAM B JAM LOCATION INDICATOR
26. 22 SM Installation DRUM Outside Do not scratch the cloth screen or metal screen Properly insert the edge of the mylar A on the cloth screen under the mylar on the metal screen as shown above Otherwise ink will leak from the trailing edge of the master on the drum during a long printing run Make sure that the correct side of the screen is facing up In addition make sure that the stays for securing the cloth screen are positioned correctly Refer to the upper right illustration When replacing the cloth screen spread the screen around the metal screen while strongly pulling the stay C Adjust the stay so that it is parallel to the master clamper then tighten the screws Make sure that the cloth screen is not wrinkled while spreading it around the drum SM 3 23 C252 5 X 75 Adjustment DRUM 3 9 3 CLAMPER METAL SCREEN e Remove the drum e Cloth screen 3 9 2 A Clamper lever 1 hexagon screw B Clamper open the clamping plate C then remove the clamper NOTE 1 Do not allow ink to get on the inside of the clamping plate C Otherwise the master may slip off and the image position on the prints will move toward the trailing edge of the prints during a printing run 2 Use a cloth dampened with water to clean the inside of the clamping plate C Never use alcohol or other solvents or the clamping force of the magnet will be
27. 23 6 Front 1 1 5 DIMENSIONS C252 582mm 23 0 519 mm 20 5 663 mm 26 1 INSTALLATION PROCEDURE 1 2 INSTALLATION PROCEDURE 1 2 1 MAIN BODY 2 S 0 Accessory Check Make sure that you have all the accessories listed below Description Q ty A ae eo 2 2 Paper Feed Side Pad 2 3 Operating Instructions 1 4 NECR Ricoh version 1 5 Model Name Plate 252 72 and 252 92 1 set 6 Paper aura 1 set 7 Paper Delivery Table 1 set SM 1 3 C252 INSTALLATION PROCEDURE Rev 11 2003 Installation Procedure NCAUTION To avoid serious injury do not connect the power plug to the machine until you are instructed to do so 1 Unpack the machine and remove all the wrapping 2 Remove all filament tape and string securing the covers and units as shown above Important note for installation A Styrene foam sponge is used to ensure that the rear shipping tape stays properly fixed in place which prevents the printing pressure release lever from unlocking At in
28. 38 C252 TIMING CHART 6 9 3 PRINTING suondiuosag N N uonisod Josuas uonisod Palo ay Je 401 06 peeds Bunuud pajoejas y je sejejoJ y uonisod Josuas uonIsod Palo je SI turup ueuM sdejs 627 JO JOJOW ay sesind sn d uonisod 10sues pes pee ay je SI ay usym UO SUJN pes jeded ay josues 5 ay ay ueuM O JOJON 9JJIUM REESE ue e 440 sind 000 gind g98 979000 US Jedeg sdd gjer UlONENSIBOY plougjos se l xi anssald us sedeg ol uidi 099 oesw gi 06 1 NA every US UONISOd 12915 J9ISEN eui SM SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS 1 GENERAL SPECIFICATIONS Configuration Desktop Master Process Digital with 300 dpi thermal head Scanning Pixel Density 300 dpi Originals Sheet Printing Process Fully automatic one drum stencil system Original Size Maximum 275 x 395 mm
29. 4 OFF ON ON ON 1 2 ON OFF ON ON 1 0 OFF OFF ON ON 0 8 ON ON OFF ON 0 6 OFF ON OFF ON 0 4 ON OFF OFF ON 0 2 OFF OFF OFF ON 0 OFF OFF OFF OFF 0 ON ON ON OFF 1 4 OFF ON ON OFF 1 2 ON OFF ON OFF 1 0 OFF OFF ON OFF 0 8 ON ON OFF OFF 0 6 OFF ON OFF OFF 0 4 ON OFF OFF OFF 0 2 C252 5 10 SM DIP SWITCHES 5 2 6 DIPSW103 NO 5 TO 8 MASTER FEEDING SPEED ADJUSTMENT Purpose To adjust the sub scan magnification for the master by changing the speed of the master feed motor Inputting a positive value stretches the image on the master Inputting a negative value shrinks it Adjust standard 300 0 5 mm 1 Access SP6 42 Image Adjustment Pattern Print and then press the master making key 5 1 8 2 Exit the SP mode print 5 copies at 90 speed Fast Use the 5th print for the adjustment The black area should be 300 0 5 mm in length If it is out of the standard then adjust DIPSW103 5 to 103 8 300 Value 300 x 100 DIPSW103 5 DIPSW103 6 DIPSW103 7 DIPSW103 8 Difference ON ON ON ON 1 4 OFF ON ON ON 1 2 ON OFF ON ON 1 0 OFF OFF ON ON 0 8 ON ON OFF ON 0 6 OFF ON OFF ON 0 4 ON OFF OFF ON 0 2 OFF OFF OFF ON 0 OFF OFF OFF 0 OFF 1 4 OFF ON ON OFF 1 2 ON OFF ON OFF 1 0 OFF OFF ON OFF 0 8 ON ON OFF OFF 0 6 OFF ON OFF OFF 0 4 ON
30. 4 SM SM PAPER DELIVERY Turn the drum manually until the recess in the drum drive gear meets the positioning hole A in the bracket as shown Loosen screw B then screw C in that order do not remove them Make sure that the bracket D becomes free from engagement and the cam follower E contacts the drum flange Measure the gap F between the cam follower and cam face front drum flange It should be 0 to 0 5 mm If the gap is not correct loosen the two screws securing the cam follower bracket G Re tighten the two screws while pushing the cam follower against the cam face Make sure that the gap F is 0 or less than 0 5 mm NOTE Do not push the cam followers too strongly against the cam Re position the bracket D and tighten the screws B and C 3 35 C252 5 X 75 Adjustment MAIN DRIVE 3 11 MAIN DRIVE 3 11 1 MAIN DRIVE TIMING BELT ADJUSTMENT After the timing belt is replaced correct belt tension must be applied 0 E a e e Rear cover 3 2 2 MPU 3 3 1 e PSU 3 3 2 Loosen the screws A B and C Move the tension roller 0 to the right with screwdriver E as shown Tighten the screws A B and C Remove the screwdriver pU ANS C252 3 36 SM 3 11 2 MAIN MOTOR PULLEY POSITION After putting the pulley back on the main motor shaft refer to the above illustration for the
31. 5 Measure the voltage and turn VR1 on the PSU until the value is between 0 and 0 1 volts from the value on the thermal head decal SM 3 11 C252 MASTER FEED 3 5 4 MASTER END SENSOR ADJUSTMENT Purpose To ensure that the sensor detects the end mark a solid black area on the master roll Standard 2 0 0 1 volts Tools The core of a used master roll the core just before a master end display appears e Rear covers 3 2 2 1 Place the core inside the master making unit and close the master making cover 2 Connect the power plug and turn on the main switch 3 Access SP6 41 4 Turn VR102 A on the MPU board until the display is 2 0 0 1 volts C252 3 12 SM 3 6 MASTER EJECT 3 6 1 MASTER EJECT UNIT A Paper delivery cover x 5 B Master eject box C Master eject unit 2 x 2 x 3 3 6 2 MASTER EJECT ROLLERS e Master eject unit er3 6 1 A Gears x 1 B Lower master eject roller x 2 C Upper master eject roller x 2 spring SM 3 13 MASTER EJECT B C252 PR 5 X 75 Adjustment PAPER FEED 3 7 PAPER FEED 3 7 1 PAPER FEED ROLLER FRICTION PAD A Paper feed roller unit 0 x 1 B Paper guide C Paper feed roller x 1 D Friction pad C252 3 14 SM PAPER FEED 3 7 2 PAPER FEED PRESSURE ADJUSTMENT The position of the sp
32. 5 8 SM DIP SWITCHES 5 2 4 DIPSW102 NO 1 TO 3 THERMAL HEAD ENERGY CONTROL The default is 7 This means that during printing mode the thermal head energy is 93 of the maximum power This can help to increase or decrease the image density However do not use this SP under normal circumstances DIPSW102 1 DIPSW102 2 DIPSW102 3 Settings OFF OFF OFF 7 Standard OFF ON OFF 5 OFF OFF ON 3 OFF ON ON 0 ON OFF OFF 10 ON ON OFF 15 ON SM OFF ON 20 5 9 C252 DIP SWITCHES 5 2 5 DIPSW103 NO 1 TO 4 SCANNING SPEED ADJUSTMENT Purpose To adjust the sub scan magnification for scanning by changing the speed of the scanner motor Inputting a positive value stretches the image on the master Inputting a negative value shrinks it Adjustment standard Within 100 0 5 Make a copy at 90 cpm speed Fast Compare the image on the print with that on the original Make sure that the difference of the sub scan magnification is within the standard 4 Ifitis out of standard then adjust DIPSW103 1 to 103 4 NOTE The image position on a trial print which is automatically made after making a master tends to vary Do not use the trial print when making adjustments DIPSW103 1 DIPSW103 2 DIPSW103 3 DIPSW103 4 Difference ON ON ON ON 1
33. D arena 3 1 3 2 2 REAR COVER e dd 3 2 3 3 SAVE 3 3 992 POU Temm 3 4 S4 SCANNER qe 3 5 34 1 COVERS kassel 3 5 3 4 2 1ST 2ND FEED ROLLER CIS CONTACT IMAGE SENSOR 3 6 3 4 3 DOCUMENT SENSOR coartada iii anna 3 7 3 4 4 SCANNER MOTOR oet ee t een 3 7 3 9 MASTER FEED uu ER te 3 8 3 5 1 MASTER MAKING UNIT visionar 3 8 3 5 2 THERMAL HEAD uante 3 9 3 5 3 THERMAL HEAD VOLTAGE 3 11 3 5 4 MASTER END SENSOR ADJUSTMENT 3 12 2 0 MASTER EJECT Ar re dude cer OE ERE ERE 3 13 9 5 1 MASTER EJECT UN 3 a 3 13 3 6 2 MASTER EJECT ROLLERS aa 3 13 SM i C252 Sel PAPER een 3 14 3 7 1 PAPER FEED ROLLER FRICTION PAD 3 14 3 7 2 PAPER FEED PRESSURE ADJUSTMENT 3 15 3 7 3 PAPER SEPARATION PRESSURE ADJUSTMENT 3 16 397 PRINTING 2a E 3 17 3 01 PRESS ROLLER varer 3 17 3 8 2 PAPER REGISTRATION ROLLER eee 3 18 3 8 3 PRESS ROLLER RELEASE LEVER ADJUSTMENT 3 20 3 8 4 PRINTING PRESSURE ADJUSTMENT eene 3 21 SG DRUM EE 3 22 3 9 1 PREPARATION caen iex ee ERE LUE 3 22 392 CLOTF SCREEN Lise 3 22 3 9 3 7 METAL 0d edo 3 24 3 9 4 INK PUMP ADJUSTMENT
34. Gestetner LANIER RIGOU Savin C252 SERVICE MANUAL 001701MIU RICOH GROUP COMPANIES Gestetner RICO Savin TIWANVIN 391A43S CSCO RICOH GROUP COMPANIES Gestetner LANIER RICOH Savin C252 SERVICE MANUAL 001701MIU It is the reader s responsibility when discussing the information contained within this document to maintain level of confidentiality that is in the best interest of Ricoh Corporation and its member companies NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY FASHION AND DISTRIBUTED WITHOUT THE PRIOR PERMISSION OF RICOH CORPORATION All product names domain names or product illustrations including desktop images used in this document are trademarks registered trademarks or the property of their respective companies They are used throughout this book in an informational or editorial fashion only and for the benefit of such companies No such use or the use of any trade name or web site is intended to convey endorsement or other affiliation with Ricoh products O 2003 RICOH Corporation All rights reserved WARNING The Service Manual contains information regarding service techniques procedures processes and spare parts of office equipment distributed by Ricoh Corporation Users of this manual should be either service trained or certified by successfully completing a Ricoh Technical Training Program Untrained and uncertified users utilizing information contained in this serv
35. ILD SECTION DESCRIPTIONS 6 1 6 1 MECHANISM OVERVIEW 6 1 o LT MAJOR PARIS a ERE 6 1 6 1 2 ELECTRICAL COMPONENT 6 2 6 1 3 DRIVE LAYOUT lt a aaidaki i aiaa iiia aiaiai 6 5 6 2 UNIT ser 6 6 LP MSIE nada gs 6 6 6 2 2 MASTER CLAMPER OPENING MECHANISM 6 7 6 2 3 MASTER EJECT ROLLER MECHANISM 6 8 6 2 4 PRESSURE PLATE 6 9 b 3 SCANNER DNI iro rete het te esee tere he beret at 6 10 6 3 1 SCANNER DRIVE n 6 10 64 IMAGE PROCESSING ra 6 11 6 4 1 IMAGE PROCESSING PLOW 6 11 65 MASTER FEED cuina 6 12 6 5 1 OVERVIEW aa 6 12 6 5 2 MASTER FEED MECHANISM 6 13 6 5 3 CLAMPER AND TENSION ROLLER 6 14 6 5 4 CUTTER MEGHANISM i ii 6 15 6 5 5 MASTER SET COVER SENSOR sl aa aaa 6 16 HO DRU M E 6 17 ME 2 5 6 17 SM ili C252 6 6 2 DRUM DRIVE MECHANISM eee 6 18 6 6 3 INK SUPPLY MECHANISM 25 6 19 6 6 4 INK ROLLER MECHANISM
36. ON ON ON 6 pulse 3 054 mm ON OFF ON ON 5 pulse 2 545 mm OFF OFF ON ON 4 pulse 2 036 mm ON ON OFF ON 3 pulse 1 527 mm OFF ON OFF ON 2 pulse 1 018 mm ON OFF ON 1 pulse 0 509 mm OFF OFF ON 0 OFF OFF OFF 0 ON ON OFF pulse OFF ON OFF 6 pulse ON ON OFF 5 pulse OFF ON OFF 4 pulse ON OFF 3 pulse OFF OFF 2 pulse ON OFF 1 pulse 1 pulse 0 509 mm SM 5 7 C252 DIP SWITCHES 5 2 3 DIPSW101 NO 5 TO 8 MASTER WRITING POSITION ADJUSTMENT Purpose To match the printing side to side on the print paper with that on the original Adjustment standard 1 0 mm The master writing position moves as shown below Paper Feed Direction J NOTE The image position on a trial print which is automatically made after making a master tends to vary Do not use the trial print when making adjustments DIPSW101 5 DIPSW101 6 DIPSW101 7 DIPSW101 8 Difference Difference ON ON ON ON 28 dots 2 38 mm OFF ON ON ON 24 dots 2 04 mm ON OFF ON ON 20 dots 1 7 mm OFF OFF ON ON 16 dots 1 36 mm ON ON OFF ON 12 dots 1 02 mm OFF ON OFF ON 8 dots 0 68 mm ON OFF ON 4 dots 0 34 mm OFF OFF ON 0 0 OFF 28 dots OFF ON OFF 24 dots ON ON OFF 20 dots OFF ON OFF 16 dots ON OFF 12 dots OFF OFF 8 dots ON OFF 4 dots 1 dot 0 085 mm C252
37. PER DELIVERY 6 8 1 OVERVIEW Procedure The exit pawl A and the air knife separate the paper from the drum y The paper 15 fed to the paper delivery table by the paper delivery unit 0 The paper exit sensor is used for jam detection amp 4 4 6 C252 6 32 SM PAPER DELIVERY 6 8 2 PAPER DELIVERY UNIT DRIVE MECHANISM Mechanism Main motor A Belt and gear B Shaft C Rotates the transport belts 0 NOTE 1 The vacuum fan motor inside the unit holds the paper against the belts D to deliver the paper to the delivery table 2 The transport belt rotation speed depends on the selected print speed SM 6 33 C252 7 5 os 33 og PAPER DELIVERY 6 8 3 PAPER SEPARATION FROM THE DRUM Air knife e The air from the air knife fan motor A separates the paper from the drum The air knife fan motor starts blowing air when the print start key is pressed or when master cutting is finished The paper passes under the exit pawl and is delivered to the delivery table C252 6 34 SM PAPER DELIVERY 6 8 4 EXIT PAWL DRIVE MECHANISM During printing the distance between the exit pawl A and the drum is very small to prevent paper wrap jams However when the master clamper B approaches the exit pawl as the drum turns the pawl has to be moved away from the drum to prevent it from being damaged by the master clamper This is controlled b
38. TALLATION INSTALLATION REQUIREMENTS 1 INSTALLATION 1 1 INSTALLATION REQUIREMENTS Carefully select the installation location because environmental conditions greatly affect machine performance 2 5 k 0 1 1 1 OPTIMUM ENVIRONMENTAL CONDITION 1 Temperature 10 to 30 C 50 to 86 F 2 Humidity 20 to 90 RH 3 Install the machine on a strong and level base The machine must be level within 5mm 0 2 both front to rear left to right 1 1 2 ENVIRONMENTS TO AVOID 1 Locations exposed to direct sunlight or strong light more than 1 500 lux 2 Dusty areas 3 Areas containing corrosive gases 4 Locations directly exposed to cool air from an air conditioner or reflected heat from a space heater Sudden temperature changes from low to high or vice versa may cause condensation within the machine 1 1 3 POWER CONNECTION Securely connect the power cord to a power source Make sure that the wall outlet is near the machine and easily accessible Make sure the plug is firmly inserted in the outlet Avoid multi wiring SUE ENN cS Do not pinch the power cord SM 1 1 C252 INSTALLATION REQUIREMENTS 1 1 4 MINIMUM SPACE REQUIREMENTS Place the machine near a power source providing minimum clearance as shown below 600 mm 23 6 Left 200 mm 7 9 Rear 600 mm 23 6 Right 600 mm
39. To protect the thermal head the voltage supply is automatically stopped after 30 seconds It is also stopped by pressing the clear stop key 3 5 3 SM 5 3 C252 5 1 5 MAIN MENU NO 3 TEST MODE No Name Function 3 1 Firmware Suffix 5 1 6 Information 3 4 All Indicators ON Turns on all the indicators on the operation panel by pressing the master making key 3 5 Test Pattern Print Print the thermal head test pattern by pressing the master making key 3 6 Ink Detection Specifies whether ink detection is done 0 OFF 1 ON Default The setting value returns to default value in power switch off 5 1 6 SP3 1 FIRMWARE SUFFIX INFORMATION This model has no LCD so the suffix is displayed as shown below instead of in Latin letters A b c dEF GH J k LM n P Qr ST V NX Y Z NOTE The letters i o and u are always skipped 5 1 7 MAIN MENU NO 6 ADJUSTMENT MODE Name Function Ink Detection Adjustment 3 9 6 Master End Sensor Adjustment 3 5 4 Image Adjustment Pattern Print 5 1 8 C252 5 4 SM SERVICE PROGRAM 5 1 8 SP6 42 IMAGE ADJUSTMENT PATTERN PRINT This test pattern is used for master feeding speed adjustment e Master Feeding Speed Adjustment 5 2 6 This test pattern is generated in the MPU and does not use the scanner unit So this pattern can also be used to determine whether an image probl
40. ade Master Eject Sensor Open The E jam indicator is lit whenever the main switch is on Shorted The E jam indicator is lit whenever used master is ejected Pressure Plate HP Sensor Open Shorted E 12 is displayed whenever the main switch is on Pressure Plate Limit Sensor Open E 12 is displayed whenever the main switch is on Shorted The master eject indicator is lit whenever the main switch is on Feed Start Timing Sensor Open E 6 is displayed whenever the main switch is on Shorted E 24 is displayed whenever the main switch is on Master Eject Position Drum HP Sensor Open E 6 is displayed whenever the main switch is on Shorted E 23 is displayed whenever the main switch is on Drum Master Sensor Open The jam indicator is lit whenever proof print is made Shorted The jam indicator is lit whenever master is made The indicator is lit whenever a copy is made Paper Exit Sensor C252 Open The C jam indicator is lit whenever the main switch is on Shorted The jam indicator is lit whenever copy is made SM Component Condition ELECTRICAL COMPONENT DEFECTS Symptom Clamper Open Sensor Open Shorted E 00 is displayed whenever the clamper operates Clamper Closed Sensor Open E 00 is displayed whenever the clamper operates Shorted E 00 is
41. ading edge of the master At this time the cutter D cuts the trailing edge of the master y The master is wrapped around the drum E C252 6 12 SM MASTER FEED 6 5 2 MASTER FEED MECHANISM F Mechanism Master feed motor A stepper motor Gears B Platen roller C master feed roller D Feeds the master The thermal head creates an image on the master Procedure 1 After the old master has been ejected the drum stops at the master feed position and the master clamper opens ready to clamp the new master 2 When the clamper is open the tension roller releases and the master is fed to the clamper on the drum For details of the tension roller see section 6 5 3 3 After the clamper closes the master feed motor feeds the master while the drum rotates intermittently at 30 rpm The intermittent rotation keeps buckle F in the master above the master feed guide to absorb shocks from the wrapping operation 7 5 f 33 og 4 The tension roller E keeps the master under tension This roller reduces the master making time because it allows the drum to turn continuously during wrapping Without this roller if the drum kept turning the master would crease 5 The main motor turns off when the drum is at the master eject position The master feed motor continues to feed the master until master making completed Then the master feed motor turns off and cutting is done NOTE Spr
42. ches in the feed roller ensure that these rollers do not resist paper feed 3 The guides E help to feed paper that is not perfectly flat The guides are not used normally C252 6 24 PAPER FEED 6 7 3 PAPER FEED SEPARATION PRESSURE MECHANISM A E 7 5 os SZ 33 og Standard position 35 to 81 5 g m 9 3 to 21 6 Ib B Thick paper position 81 6 to 127 9 g m 21 7 to 34 0 Ib e The user can change the feed roller pressure by changing the position of the pressure adjustment lever A e f paper feed jams frequently occur the lever should be moved to adjust the pressure e f non feed or multi sheet feed problems still occur the paper separation pressure can also be adjusted using the separation pressure slider C e The default position of the slider C is position 3 e By loosening then moving the screws D up or down the spring E which applies pressure to the friction pad block F moves up or down This should be done by a technician 3 7 3 e The default position of the screw D is at the lowest position SM 6 25 C252 PAPER FEED 6 7 4 REGISTRATION ROLLER MECHANISM Registration Roller Drive A Registration motor A Belt B Turns the lower registration roller C NOTE 1 The CPU controls the registration roller start timing to synchronize the print paper with the image on the master on the drum 2 The motor speed depend
43. ct Image Sensor CIS Pressure plate motor Scanner motor Clamper motor Master feed motor 4 3 2 LED S Main Board No Function OFF Low ink condition ON Sufficient ink condition LED103 4 3 3 VR S Main Board Function Adjust the ink detection 3 9 6 Adjust the master end sensor 3 5 4 PSU No Function VR1 Adjust the thermal head voltage 3 5 3 C252 4 4 SM FUSE LED DIP SW TABLES 4 3 4 TEST POINTS Main Board No Function TP101 GND TP103 Measures the ink detection pulse TP104 Measures the ink detection pulse standard pulse TP113 GND PSU Function Thermal head voltage GND 4 3 5 DIP SWITCHES Main Board 2 DIPSW Bit No Name Settings 101 1104 Paper Registration Position Adjust 5 2 2 5 5108 Master Writing Position Adjust 5 2 3 1103 Thermal Head Energy Control 5 2 4 4 Not used 2 5 Drum Size Selection ON LG OFF B4 102 6 Size in Metric or Inch ON inch OFF mm 7 ON Enabled OFF Disabled 8 Not used 103 1104 Scanning Speed Adjustment 5 2 5 5108 Master Feeding Speed Adjustment 5 2 6 SM 4 5 C252 DETECTION 44 JAM DETECTION 4 4 1 MASTER EJECT JAM E JAM LOCATION INDICATOR Picking up the used master from the drum Drum Main Motor 30 rpm Master Eject Pos
44. de air to separate the leading edge of the paper from the drum Vacuum Fan Motor Provides suction so that paper is held firmly on the transport belt Pressure Plate Motor Drives the pressure plate Clamper Motor Opens or closes the master clamper on the drum Main Motor Rotates the drum paper feed roller and transport belts Switches Registration Motor Component Feeds the paper to align it with the master on the drum Function Right Side Cover Set Switch Checks if the right side cover is closed Door Safety Switch Solenoids Component Checks whether the front door is properly closed Function Front Pressure Release Solenoid Releases the press roller to apply printing pressure 75 2 E Rear Pressure Release Solenoid Counters Component 4 0 Releases the press roller to apply printing pressure Function Master Counter Keeps track of the total number of masters made Paper Counter Keeps track of the total number of copies SM C252 MECHANISM OVERVIEW Sensors Component Function Cutter HP Sensor Detects when the cutter is at the home position 8 Master Set Cover Sensor Checks if the master set cover is properly set 9 Master End Sensor Detects when the master making unit runs out of master roll 10
45. document sensor still detects the original the P jam indicator lights Just after turning on the main switch Check If the document sensor detects an original the P jam indicator lights SM 4 7 C252 DETECTION 4 4 3 MASTER FEED JAM LOCATION INDICATOR Cutting the master master not cut Master Making Wrapping Master Main Motor ee Master Eject Position Sn SC Cutter H P Sn Cutter Motor Drum Master Sn Patch on the Clamper Check While the drum is rotating from when the cutter home position sensor turns on cutter at home position until the master eject position sensor turns on drum at master eject position if the drum master sensor doesn t detect a master on the black patch on the drum clamper then the D jam indicator lights Cutting the master cutter unit problem Master Making Main Motor Cutting Master Cutter H P Sn sv ff Cutter Motor m During master cutting if the cutter HP sensor does not turn on the cutter does not reach home position at the desired time then the D jam indicator lights C252 4 8 SM DETECTION Clamping the master Check Master Making Wrapping Master i I Main Motor 0 5 sec Master Eject Position Sn Drum Master Sn I I I 4 Check When the master eject position sensor turns on drum at master eject position aft
46. eed Motor SM 6 5 MECHANISM OVERVIEW C252 5 os St 33 og 6 2 MASTER EJECT UNIT 6 2 1 OVERVIEW The master eject unit removes the used master from the drum e e 1 Digital Duplicators Duplicating Process Master Ejecting Procedure The drum turns to the master eject position Then the clamper A opens The drum driven by the main motor can only rotate in one direction clockwise when viewed from the front of the machine l Master eject rollers B pick up the master s leading edge and feed the master for 0 6 seconds into the master eject box C The clamper then closes y The drum then turns at 30 rpm while the master eject rollers continue to feed the used master into the eject box y The drum stops after making about 1 5 turns The master eject motor also stops The pressure plate D then compresses the used masters in the eject box e The capacity is 30 used masters under normal conditions e The master eject process is skipped when the drum master sensor E detects no master on the drum C252 6 6 SM MASTER EJECT UNIT 6 2 2 MASTER CLAMPER OPENING MECHANISM Clamper Mechanism Clamper motor A opens the clamper at the master eject position Gears B y Link y Drum guide D moves and engages the pin on the rear flange of the drum Lifts the clamper lever E and engages the drum The leve
47. elt B Gears C The drum only rotates in one direction CW viewed from the front of the machine NOTE 1 The main motor encoder sends pulses to the main motor control board 1000 pulses 360 degrees 2 The CPU monitors the pulses and controls the drum speed and stop positions 3 The drum has two sensors e Master eject sensor D master eject position and drum home position e Feed start timing sensor E 4 The drum has two stop positions e Master eject drum home position e Master feed position feed start timing sensor 111 pulses C252 6 18 SM DRUM 6 6 3 INK SUPPLY MECHANISM Mechanism Ink pump motor A Gear rotation converted into piston motion l Supplies ink from the ink cartridge to the ink roller via the pump C Ink drops through holes in the ink roller D NOTE There are four holes in the shaft for the B4 size drum and two holes for the Legal size drum SM 6 19 C252 2 5 St 38 og DRUM 6 6 4 INK ROLLER MECHANISM E Mechanism Main motor y Gears A Ink roller B rotates Gears C Doctor roller D rotates The doctor roller squeezes the ink on the ink roller to produce an even thickness of ink on the ink roller NOTE 1 The ink roller drive gear E has a one way clutch to prevent the ink roller from being turned in reverse if the drum is manually turned in the reverse direction 2 The
48. em is caused by the scanner or the thermal head e f there is an image problem during copying but the test print is OK the problem could be in the scanner unit The print paper should be B4 or LG size when using this test pattern lt Paper Feed Direction mm SM 5 5 C252 DIP SWITCHES 5 2 DIP SWITCHES 5 2 1 OVERVIEW DIPSW No ON al 41 12345678 Settings Paper Registration Position Adjust 5 2 2 101 Master Writing Position Adjust 5 2 3 Thermal Head Energy Control 5 2 4 Not used Drum Size Selection ON LG OFF B4 Size in Metric or Inch ON inch OFF mm Panel Beeper ON Enabled OFF Disabled Default Not used Scanning Speed Adjustment 5 2 5 C252 Master Feeding Speed Adjustment 5 2 6 DIP SWITCHES 5 2 2 DIPSW101 NO 1 TO 4 PAPER REGISTRATION POSITION ADJUSTMENT Purpose To match the printing leading edge on the print paper with that on the original Adjustment standard 1 0 mm The print position moves as shown below Paper Feed Direction NOTE The image position on a trial print which is automatically made after making a master tends to vary Do not use the trial print when making adjustments DIPSW101 1 DIPSW101 2 DIPSW101 3 DIPSW101 4 Difference Difference ON ON ON ON 7 pulse 3 563 mm OFF
49. er 0 5 second if the drum master sensor doesn t detect a master then the D jam indicator lights D 4 4 4 DRUM JAM LOCATION INDICATOR Wrapping jam Check 1 i 360 degrees 4 gt Main Motor Feed Start Timing Sn Registration Sn reet Power Exit Sn Check 1 When the drum has turned 360 degrees since the feed start timing sensor turned on and the paper exit sensor still doesn t detect the paper then the B jam indicator lights Check At the same time as check 1 if the paper exit sensor doesn t detect the paper and the registration sensor is on then the A and B jam indicators light SM 4 9 C252 DETECTION 4 4 5 PAPER FEED JAM A JAM LOCATION INDICATOR s 2 Paper feed Feed Start lt Re Feed Start Check 1 93 degrees 93 degrees lt gt Main Motor n Feed Strat Timing Sn Paper Feed Clutch E NEA MM AEREN Check 1 If the registration sensor does not detect paper after the drum has turned 93 degrees the feed clutch stops until the drum reaches the feed start position again then the feed clutch turns on again this is re feeding If the registration sensor still doesn t detect paper after the drum has turned 93 degrees since re feeding started the A jam location SW and amp indicators light Note that the machine also follows this pattern if the tray is empty There i
50. ferent spiral threads on the screw shaft The cutter usually cuts a master of about 470 mm in length After cutting the drum starts turning again to wrap the remaining part of the master around the drum The leading edge of the master that was cut remains at the cutting position ready to make the next master 7 5 f 33 og 5 6 15 252 MASTER FEED 6 5 5 MASTER SET COVER SENSOR A Master set cover sensor B Master set cover e f the cover is closed properly the release button C rises C252 6 16 SM DRUM 6 6 DRUM 6 6 1 OVERVIEW C D A B Procedure Ink is supplied inside the drum through the drum shaft n The ink roller A and the doctor roller B spread the ink evenly on the screens Ink passes through the metal screen Ink passes through the cloth screen D Ink passes through the holes in the master that were made by the thermal head Ink reaches the paper 72 5 os St 33 og a NOTE 1 The drum is driven by the main motor and turns only clockwise viewed from the front of the machine 2 The main motor speed and the drum stop positions are controlled by monitoring the motor encoder 3 The ink pump which is located inside the drum supplies ink from the ink cartridge into the drum through the drum shaft SM 6 17 C252 DRUM 6 6 2 DRUM DRIVE MECHANISM Mechanism Main motor A motor B
51. gnal within 2 5 seconds after the main motor turns on Main motor drive Main motor Motor drive board Master eject position SN Thermal Head Thermistor Open The thermistor output voltage is over 4 9 volts Thermal head thermistor Thermal head connector 5 gt Fo Thermal Heard Drive Failure The CPU detects an abnormal condition in the thermal head drive circuit Thermal head MPU Thermal head connector Pressure Plate error The pressure plate home position sensor signal is not detected within 3 0 seconds after the pressure plate motor turns on Pressure plate drive Pressure plate motor Plate position sensors IPU error Signal transmission error from the IPU occurred in the MPU MPU Master Eject Position Sensor Drum HP error The master eject position sensor does not activate before the feed start timing sensor activates Master eject position sensor Feed start timing sensor Feeler Feed Start Timing Sensor error The feed start timing sensor does not activate before the master eject sensor activates 4 1 Master eject position sensor Feed start timing sensor Feeler C252 ELECTRICAL COMPONENT DEFECTS 4 2 ELECTRICAL COMPONENT DEFECTS Ej ij N 8 Component Condition Symptom Original Sensor Open The P jam indicator is lit whenever the main switch is on Shorted The P jam indicator is lit whenever a master is m
52. he drum A Press roller x 1 The bearings on the rear and front differ During installation ensure that the bearing with the stopper B is positioned towards the rear of the machine SM 3 17 C252 PRINTING 3 8 2 PAPER REGISTRATION ROLLER e Remove the paper table e Front cover 3 2 1 e Rear cover 3 2 2 MPU er 3 3 1 A Registration motor spring amp x 3 belt E x1 B Gear C Bearing 4 x 2 C252 3 18 SM SM Bearing 2 x 2 Slider bracket x 2 Plate 2 x 4 Registration roller 3 19 PRINTING B C252 5 X 75 Adjustment PRINTING 3 8 3 PRESS ROLLER RELEASE LEVER ADJUSTMENT Purpose To maintain the correct clearance between the press roller arms and press roller lock levers This ensures that the press roller is correctly released and pressed against the drum when the press roller release solenoid is energized Standard 0 7 to 1 2 mm Tools Thickness gauge 0 e Front cover 3 2 1 e Rear covers 3 2 2 1 Turn the drum manually until the drum master clamper on the drum moves into the lowest position This is when the high points of the cams on the drum flanges meet with the cam followers on both ends of the press roller To find out the correct position of the drum for the adjustment look at the rear end of the d
53. he holder 3 Push the plunger D until it reaches the bottom NOTE The end of the plunger 0 should project 1mm outside from the holder 4 Check that piston motion is smooth 5 If the motion is stiff loosen the pump screws E and adjust the pump position 6 After tightening repeat step 4 and step 5 C252 3 26 SM DRUM G jueunsn py pue 7 Re tighten the two screws 8 Check that the piston motion is smooth 9 Reinstall the E ring B C252 3 27 SM DRUM 3 9 5 DOCTOR ROLLER GAP ADJUSTMENT Purpose To control the ink thickness around the ink roller Standard A 0 07mm gauge passes but a 0 09mm gauge does not Tools Thickness gauge NCAUTION Normally the doctor roller gap is not adjusted or changed It tends to be difficult to change in the field If the gap is too narrow an uneven image may appear on the prints If it is too wide too much ink will be applied to the drum screens resulting in ink leakage from the drum e Wipe off the ink around the ink roller beforehand Use SP3 6 e Remove the drum e Remove the Ink roller unit 1 Make sure that a 0 07 mm gap gauge goes through the gap A between the ink and doctor rollers and that a 0 09 mm gap gauge does not NOTE 1 The gap should be checked at both ends of the doctor roller Insert a gap gauge at each end of the roller The gap tends to be larger for the
54. ice manual to repair or modify Ricoh equipment risk personal injury damage to property or loss of warranty protection Ricoh Corporation LEGEND PRODUCT CODE COMPANY GESTETNER LANIER RICOH SAVIN GE U 22 T U DOCUMENTATION HISTORY REV NO DATE COMMENTS 6 2003 Original Printing 252 TABLE OF CONTENTS INSTALLATION 1 INSTALLATION 2 1 1 1 1 INSTALLATION REQUIREMENTS sese nennen 1 1 1 1 1 OPTIMUM ENVIRONMENTAL 1 1 1 1 2 ENVIRONMENTS TO 1 1 1 1 3 POWER CONNECTION 1 1 1 1 4 MINIMUM SPACE 5 eee 1 2 12129 DIMENSION So iir tetti cad nd dl nd siib odes 1 2 1 2 INSTALLATION PROCEDURE eene 1 3 2 MAIN BOD Y eh E Ete ES ene RE 1 3 1 2 2 ADDITIONAL DRUMS 1 12 1 2 3 INTERFACE BOARD OPTION eee 1 13 PREVENTIVE MAINTENANCE 2 PREVENTIVE 2 1 2 1 MAINTENANCE TABLE rare seen ee 2 1 REPLACEMENT AND ADJUSTMENT 3 REPLACEMENT AND ADJUSTMENT 3 1 3 1 GENERAL CAUTION 3 abs 3 1 32 COVER d mM eke E 3 1 3 2 1 PANEL FRONT COVERS i
55. ings press the thermal head against the platen roller The pressure 15 applied when the master set cover which includes the platen roller is closed SM 6 13 C252 MASTER FEED 6 5 3 CLAMPER AND TENSION ROLLER MECHANISM Mechanism Clamper motor A Gears B y Link C y Drum guide D y Lifts the lever E engages and locks the drum pin F opens the clamper plate Releases the tension roller H Feeds the master into the clamper Procedure When the old master has been ejected the drum is stopped at the master feed position The master clamper clamps the leading edge of the new master before the drum starts to turn again The tension roller H normally presses against the master feed guide plate to apply tension to the master during master wrapping When the clamper opens it pushes the tension roller arms I and moves the tension roller away from the guide plate to allow the master to be fed into the master clamper Clamper mechanism See the Master Eject section 6 2 C252 6 14 SM MASTER FEED 6 5 4 CUTTER MECHANISM A Cutter motor B Cutter HP sensor e When the cutter starts the drum is stopped at the master eject position drum HP e The cutter moves backwards and forwards While the cutter travels towards the rear non operation side it cuts the master The motor turns in one direction The cutter returns to the home position when it reaches the rear because of the two dif
56. ition Sn Feed Start Timing Sn Clamper Motor Master Eject Motor Master Eject Sn Checkl When the drum has rotated if the master eject sensor doesn t detect the master the E jam indicator lights Check 2 When the feed start timing sensor turns on ifthe master eject sensor has already turned off the E jam indicator lights Compressing the used master Pressure Plate Pressure Plate Limit Sn Pressure Plate Motor Master Eject i Sn C252T902 WMF Check If the master eject sensor detects a master when the pressure plate limit sensor turns on the E jam indicator lights C252 4 6 SM DETECTION Just after turning on the main switch Check If the master eject sensor is on master detected the E jam indicator lights 4 4 2 SCANNER JAM P JAM LOCATION INDICATOR Feeding in the original Start to Check 1 Scan Check 2 less than 1 5 Document Sn E XM lt lt Scanner Motor A If the document sensor detects an original when the master making key was pressed the P jam indicator lights Check 1 If the scanner has fed the original for 1 5 seconds since the master making key was pressed and the document sensor still doesn t detect the original the P jam indicator lights D Feeding out the original Check 2 When the scanner has fed out the correct length but
57. lamper e The drum master sensor A detects whether there is a master on the drum e When there is a master on the drum the black patch is covered and the sensor detects the light reflected from the master When there is no master on the drum the black patch B is exposed The black patch does not reflect light back to the sensor Because of this the master eject process can be skipped when a new master is being made if no master is detected on the drum C252 6 22 SM PAPER FEED 6 7 PAPER FEED 6 7 1 OVERVIEW This mechanism feeds blank copy paper into the printer Handling Paper Paper Feed Paper Feed Methods Friction Pad Mechanism The paper table is lifted manually The feed roller A and the separation pad B only allow one sheet to pass The registration rollers feed the paper l The print is made 7 5 os SZ 33 og NOTE 1 The main motor drives the feed roller 2 A dedicated stepper motor registration motor controls the registration roller SM 6 23 C252 PAPER FEED 6 7 2 PAPER FEED MECHANISM A Mechanism Main motor A Belt and gears Paper feed clutch Turns the paper feed roller C NOTE 1 The machine uses a friction pad D and feed roller system r EIT Handling Paper Paper Feed Paper Feed Methods Friction Pad 2 When the feed roller stops and paper is fed by the registration rollers the one way clut
58. m Vertical Registration Adjustable Range SM 10mm 7 1 C252 Specifications SPECIFICATIONS Master Master type 280 mm width B4 50 m roll 240 mm width LG 50 m roll Yield 100 masters roll Maximum run length per master 2000 prints master Storage conditions 0 to 40 C 10 to 95 RH Storage period One year after production date Ink type 500 Black 600 ml pack other colors Available colors Black Red Blue Green Brown Yellow Violet Navy Maroon Orange Hunter green Storage conditions 5 to 40 C 10 to 95 RH Optimum conditions 15 to 25 C 20 to 70 RH Storage period One year after production date 5 to 40 18 months after production date 15 to 25 C NOTE Avoid locations exposed to direct sunlight C252 7 2 SM TECHNICAL SERVICE BULLETINS Gestetner RICOR TECHNICAL SERVICE BULLETIN BULLETIN NUMBER C252 001 11 05 2003 APPLICABLE MODEL GESTETNER NA LANIER NA RICOH JP730 SAVIN NA SUBJECT PARTS CATALOG UPDATES GENERAL The following parts updates are being issued for all C252 Parts Catalogs s uvd ES O UPDATE 1 Drive Support Plate A bearing holder has been added to the drive support plate to ensure that the portion which secures the bearing does not deform This can happen if the drum unit is pulled out and pushed back in repeatedly with excessive force Please update your
59. mbling parts of the digital duplicator make sure that the power cord is unplugged 2 The wall outlet should be near the printer and easily accessible If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on keep hands away from electrified or mechanically driven components HEALTH SAFETY CONDITIONS 1 If you get ink in your eyes by accident try to remove it with eye drops or flush with water as first aid If unsuccessful get medical attention 2 If you ingest ink by accident induce vomiting by sticking a finger down your throat or by giving soapy or strong salty water to drink OBSERVANCE OF ELECTRICAL SAFETY STANDARDS 1 The digital duplicator must be installed and maintained by a customer service representative who has completed the training course on those models SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL 1 Dispose of replaced parts in accordance with local regulations 2 Used ink and masters should be disposed of in an environmentally safe manner and in accordance with local regulations Symbols This manual uses several symbols The meaning of those symbols are as follows See or Refer to Core tech manual Clip ring E ring Screw Connector INSTALLATION TAB POSITION 1 TAB TAB TAB POSITION 3 POSITION 2 POSITION 4 z a POSITION 6 POSITION 7 TAB POSITION 8 INS
60. ooks B are set firmly 2 Two side fence friction pads are included as accessories They are not used normally but if paper multi feed frequently occurs or thin paper is used the side fence friction pads can be installed to apply stopping pressure to the paper 14 Attach the side and end fences as shown 2 x 3 C252 1 8 SM INSTALLATION PROCEDURE 2 S 0 A 16 Release the paper feed side plate lock levers A and adjust the side plates to match the paper size SM 1 9 C252 INSTALLATION PROCEDURE 17 Load paper into the paper table 18 Shift the paper feed tray adjustment lever A up to the paper feeding position 19 Adjust the side and end fences of the paper delivery table to match the paper size C252 1 10 SM INSTALLATION PROCEDURE 2 S 0 20 Attach the original table A 21 Firmly insert the power plug in the outlet 22 Turn on the main switch 23 Press the clear stop key while holding down the digit 0 key to supply ink to the drum 24 Make some test copies SM 1 11 C252 INSTALLATION PROCEDURE 1 2 2 ADDITIONAL DRUMS OPTION There are two types of drum units B4 size Color Drum Color Drum Type 7 LG size Color Drum Color Drum Type 7 S Remove the protective sheet A from the drum unit Remove the tape securing the ink holder 3 Attach a color indicator to
61. r lifts the master eject arm to release the master s leading edge from the clamper 7 5 f 33 og NOTE 1 After the master making key is pressed before the clamper motor starts the master eject position sensor I is checked the drum must at the master eject position 2 The sensor actuators on the link the clamper open sensor J and the clamper close sensor K determine the clamper open and close positions 3 The master clamper uses a magnetic plate to clamp the master s leading edge 4 The drum guide catches the drum at the master eject position while the master clamper is being opened When the clamper motor turns on in reverse direction to close the clamper the drum guide also disengages the pin and the drum can turn SM 6 7 C252 MASTER EJECT UNIT 6 2 3 MASTER EJECT ROLLER MECHANISM Mechanism Master eject motor A Gears B y Master eject rollers the upper roller has paddles Pick up the master and feed it into the master eject box Procedure 1 When the clamper is open and the master s leading edge is released from the clamper the master eject motor turns on for 0 6 seconds to pick up the leading edge of the used master Then the clamper motor reverses direction to close the clamper The drum then starts turning at the slower speed 30 rpm At same time the master eject rollers turn again to feed the master into the maste
62. r eject box The drum rotates for approximately 1 5 rotations stopping at the master feed position When the drum reaches the master feed position the master eject and drum motors stop The master feed position is 111 encoder pulses after the feed start timing sensor is actuated During this process the master eject sensor D detects master eject jams 4 4 1 C252 6 8 SM MASTER EJECT UNIT 6 2 4 PRESSURE PLATE MECHANISM C E Mechanism Pressure plate motor A Gears B y Pressure plate rotates y Compresses the masters Procedure 7 5 St 38 og 1 After the master has been ejected and the drum is stopped at the master feed position the pressure plate motor turns until the actuator on the pressure plate actuates the limit sensor D 2 After master making and cutting the motor reverses until the pressure plate home position sensor C is actuated then it stops 3 Ifthe pressure plate limit sensor is not actuated within 2 8 seconds after the pressure plate motor rotates the Full Master Eject Box indicator lights 4 The idle gear E has a clutch to prevent motor overload SM 6 9 C252 SCANNER 6 3 SCANNER UNIT 6 3 1 SCANNER DRIVE Mechanism Scanner motor A Gears B l 1st feed roller C 2nd feed roller D rotate y Feed the original Procedure 1 When the master making key 15 pressed the 1st 2nd feed rollers start moving
63. r tray side fences are not aligned with the scanner unit side fences Cause 2 original is smaller than the printing paper NOTE The 252 has the following limitations The machine cannot detect the original size or printing paper size e The machine makes the master image onto two sizes only 253 mm x 358 mm 84 model 216 mm x 358 mm LG model It does not change the size of the master image to match the size of the original or printing paper Copyright 2005 RICOH Corporation All rights reserved www RicohUniversity com Page 1 of 2 Gestetner LANIER RICON sarin AdO9 Tal Tech Service Bulletin C252 003 SOLUTIONS For Cause 1 1 Measure the distance from the paper edge to the black line X mm 2 Move the side fences a distance of about X mm so that edge of the paper aligns with the edge of the original 3 Check the print results Repeat this until you cannot see the black line on the printout For Cause 2 1 Decrease the image density setting or 2 Increase the magnification setting so that the original size matches the print paper size Page 2012 FIRMWARE HISTORY Gestetner LANIER RICOR FIRMWARE HISTORY PUBLISHED DATE 10 23 2003 PRODUCT CODE C252 APPLICABLE MODEL GESTETNER LANIER NA RICOH JP730 SAVIN NA GENERAL The latest firmware version can be downloaded at the Technology
64. ring can be changed in order to change the amount of pressure exerted by the paper tray adjustment plate This adjustment can be done e When feeding special paper especially thick paper and thin paper e When the customer is experiencing feed problems D F G H e Front cover 3 2 1 Increase the feed pressure A 0 Decrease the feed pressure gt 6 gt Default position A and positions SM 3 15 C252 5 X 75 Adjustment PAPER FEED 3 7 3 PAPER SEPARATION PRESSURE ADJUSTMENT The position of the screw can be changed in order to change the amount of pressure exerted by the friction pad This adjustment can be done e When feeding special paper especially thick paper e When the customer is experiencing feed problems e Remove the paper table e Move the separation pressure slider A to position 1 right end Increase the paper separation pressure Move up the screws B Decrease the paper separation pressure Move down the screws B Default position lowest position For more details See section 6 7 3 C252 3 16 SM PRINTING 3 8 PRINTING 3 8 1 PRESS ROLLER Ed oo amp off DNS o 2 lt NCAUTION Take care to avoid possible injury If the printing pressure release arms disengage the press roller will be pulled upwards suddenly e Remove t
65. rum shaft The recess on the drum drive gear meets the hole A in the bracket when the drum is in the correct position 2 Using a thickness gauge measure the clearance B between the press roller arm C and the press roller lock lever D rear side It should be between 0 7 and 1 2 mm 3 Ifit is not correct adjust the position of the press roller lock lever after loosening the two screws E 4 Repeat steps 2 and 3 for the front side C252 3 20 SM PRINTING 3 8 4 PRINTING PRESSURE ADJUSTMENT Purpose To make better print results without decreasing the run length Standard Within 10 0 5 mm A Ed oo amp off DNS o 2 lt B e Paper delivery unit er 3 10 1 1 Adjust the distance A to 10 0 5 mm by turning the adjusting bolt B 2 Repeat same procedure for the printing pressure spring at the non operation side SM 3 21 C252 DRUM 3 9 DRUM 3 9 1 PREPARATION Before attempting any of the procedures in this section wipe off the ink around the ink roller To do this set SP3 6 ink detection to off and feed paper until the ink ends The setting value returns to the default value when power is switched off on 3 9 2 CLOTH SCREEN e Remove the drum 1 Remove the drum upper bracket x 4 2 Release the stopper A then rotate the drum until the master clamper faces top 3 Remove the cloth screen B 4 x 4 C252 3
66. s no paper end sensor the registration sensor is used to detect paper end Just after turning on the main switch Check If the registration sensor detects paper the A and B jam location indicators light C252 4 10 SM DETECTION 4 4 6 PAPER DELIVERY LOCATION INDICATOR Paper delivery Check 1 273 degrees i gt Main Motor ON Feed Start Timing Sn Registration Sn M Master Eject Position Sn le Paper Exit Sn Check 1 When the drum has turned 273 degrees since the feed start timing sensor turns on if the paper exit sensor detects paper the jam location indicator lights Just after turning the main switch Check If the paper exit sensor detects paper the jam location indicator lights SM 4 11 C252 SERVICE TABLES SERVICE PROGRAM 5 SERVICE TABLES NOTE The Service Program Mode is for use by service representatives only so that they can properly maintain product quality If this mode is used by anyone other than service representatives for any reason data might be deleted or settings might be changed In such case product quality cannot be guaranteed any more 5 1 SERVICE PROGRAM MODE The service program SP mode is used to check electrical data change modes 5 1 1 SERVICE PROGRAM MODE OPERATION To Enter and Exit the SP Mode 1 Key in the following sequence Method 1 O
67. s on the selected printing speed 3 By pressing the image position keys on the operation panel the registration motor start timing is changed C252 6 26 SM Registration Roller Up Down Mechanism After the printing paper is caught between the drum and the press roller the registration motor stops and the upper registration roller A is released from the lower registration roller This is to prevent interference from the registration rollers while the drum and press roller transport the paper e When the high point of the cam on the drum drive gear reaches the cam follower C the shaft D rotates clockwise as seen from the operation side to release the upper registration roller A from the lower registration roller Detailed 4 0 SM 6 27 C252 PAPER FEED 6 7 5 REGISTRATION SENSOR CLEANING NOTE This mechanism is attached only for China model Dust on the registration sensor A can be removed by operating a lever B The technician should do this every visit C252 6 28 SM PAPER FEED 6 7 6 PRINTING PRESSURE MECHANISM D e When not in the printing cycle the two solenoids A remain off and the stoppers B lock the brackets C to keep the press roller D away from the drum e When the 1st sheet of paper is fed both solenoids are energized but the brackets are still locked by the stoppers due to strong tension from the
68. springs When the high points of the cams on the front and rear drum flanges reach the cam followers on both sides of the press roller shaft a small clearance is made between the stoppers and the brackets The two solenoid plungers are pulled down at the same time releasing the stoppers from the brackets Printing pressure is applied by the tension from the springs E when the cam followers come off the high points of the cams During the printing cycle the solenoids remain on However if paper does not reach the registration sensor H at the proper time when the cam follower is on the high point of the cam the solenoids are de energized to lock the brackets The printing pressure is released when the cams push down the cam followers so that the press roller does not contact the master clamper I After printing is finished the solenoids de energize and the springs push the stoppers back Before the drum returns to the home position the stoppers lock the brackets again when the cams push down the cam followers 7 5 SE 38 og 6 7 7 RE FEEDING MECHANISM If the registration sensor detects a non feed the machine will try again However if the machine detects a non feed the second time the following three indicators light A jam indicator 34 Es Also see Paper End Detection SM 6 29 C252 PAPER FEED 6 7 8 PAPER TABLE MECHANISM Table lifting lowering
69. stallation please remove the rear tape by pulling the portion shown in the photo below toward the front of the machine Rear Tape Remove the tape and tag securing the Press Roller during transport If they are not removed paper jams or blank images may occur due to the lack of pressure on the Press Roller and the tape may stick to the drum screen or Press Roller Front Tape Tag C252 1 4 SM INSTALLATION PROCEDURE 2 S 0 4 Insert both spools into a new master roll 5 Install the master roll SM 1 5 C252 INSTALLATION PROCEDURE 6 Open the master making unit cover and insert the leading edge of the master roll under the platen roller The arrows A indicate the correct position of the master leading edge 7 Close the master making unit cover B using both hands until it clicks into place 8 Close the right side cover C252 1 6 SM INSTALLATION PROCEDURE 2 S 0 C252 A B 9 Open the front door 10 Release the ink holder lock lever A and pull out the ink holder B 11 Insert a new ink cartridge 12 Take the paper table and paper delivery table out of the box SM 1 7 INSTALLATION PROCEDURE 13 Lower the paper feed tray adjustment lever A and install the paper table 2 x 2 NOTE 1 When installing the paper table make sure that the h
70. the drum case The decal must be the same Ce NOD color as the ink in use Remove the drum unit Leave the old master wrapped around the removed drum to protect the drum from dust and from drying Store the removed drum unit in the drum case Install the drum unit Remove the ink cartridge cap Insert the ink cartridge in the ink holder C252 1 12 SM 1 2 3 INTERFACE BOARD OPTION INSTALLATION PROCEDURE Accessory Check 5 Check the quantity and condition of the accessories in the box against following list Description Q ty Te Interface BOO ciao nee ee 1 2 Interface Cable 1 STEN MIKG Lu net e cce usu O a ae eq 2 A SCREW NEED 2 Di Eg gt 2 Installation Procedure DDE ISI Remove the rear cover x 5 Remove the I F connector cover B 4 x 1 Connect the I F board C accessories to CN108 D on the MPU 2 x 2 Attach the cable E accessories to the connector bracket x 2 Connect the connector F at the opposite end to the I F board Re install the rear cover 1 13 C252 MAINTENANCE TABLE 2 PREVENTIVE MAINTENANCE 2 1 MAINTENANCE TABLE The following items should be maintained periodically There are two sets of intervals one based on time and the other based on print count For maintenance items
71. y the front drum flange C which is cam shaped and the cam follower E on the exit pawl shaft When the cam follower is not pushed out by the drum flange the exit pawl closely approaches the drum surface due to the tension from a spring G As the master clamper approaches the exit pawl the high point of the drum flange cam C moves into contact with the cam follower E pushing it down This moves the cam follower arm F downwards The pawl shaft turns clockwise to move the pawl away from the drum 7 5 SZ 38 og SM 6 35 C252 PAPER DELIVERY D When printing finishes and the printing pressure is released the cam follower arm F is engaged by the printing pressure release arm D and held in the lower position Therefore after printing finishes the cam follower is out of contact with the cam and the exit moves away from the drum to its normal position C252 6 36 SM TIMING CHART 6 9 TIMING CHART 6 9 1 MASTER EJECT MASTER FEED suonduos q N N p ds uBiu au JOJOW OU UO 411 40jouJ paa OU Buluueos 56016 JOJOW JYOUUEIS uo Josues ay SOUIS 02 y JOJOW JHUUEIS au u9SuAN lt

C252 SERVICE MANUAL

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