Ricoh K-C3 Service Manual Download Page 104

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B245/B276/B277/B268/B269 Service Manual

18-Jan-06

Fusing

Fusing Unit

The fusing unit can become very hot. Make sure that it has cooled down

sufficiently before you handle it.

1. Turn off the main switch, and unplug the machine.

2. Front

right

cover

3. Open the right door.

4. Fusing unit [A] ( x 2,

x 4)

Thermistor

1. Fusing unit (see above)

2. Thermistors [A] ( x 1,

x 1)

Summary of Contents for K-C3

Page 1: ... Ricoh Company Ltd January 18th 2006 Subject to change Model K C3 Machine Code B245 B276 B277 B268 B269 SERVICE MANUAL ...

Page 2: ...kets for Peripherals 6 Accessory Check 6 Installation Procedure 7 Platen Cover Installation 11 Accessory Check 11 Installation Procedure 11 ARDF Installation 12 Accessory Check 12 Installation Procedure 13 ADF Installation 16 Accessory Check 16 Installation Procedure 17 Two tray Paper Tray Unit Installation 20 Accessory Check 20 Installation Procedure 20 One tray Paper Tray Unit Installation 25 Ac...

Page 3: ...e PM Counter 49 Replacement and Adjustment 51 General Cautions 51 PCU Photoconductor Unit 51 Transfer Roller 51 Scanner Unit 51 Laser Unit 52 Fusing Unit 52 Paper Feed 52 Special Tools and Lubricants 53 Exterior Covers Operation Panel 54 Rear Cover 54 Rear Lower Cover Two tray Models Only 54 Copy Tray 55 Upper Covers 55 Left Cover 56 Front Cover 56 Front Right Cover 57 Right Rear Cover 57 Right Do...

Page 4: ...r Motor 73 Laser Unit Alignment Adjustment 74 PCU Section 76 PCU 76 Pick off Pawls and Toner Density Sensor 77 OPC Drum 78 Charge Roller and Cleaning Brush 79 Cleaning Blade 79 Developer 80 After Replacement or Adjustment 81 Toner Supply Motor 82 Paper Feed Section 83 Paper Feed Roller 83 Friction Pad 84 Paper End Sensor 84 Exit Sensor 85 By Pass Feed Roller and Paper End Sensor 86 Registration Ro...

Page 5: ...hings 98 NIP Band Width Adjustment 99 Cleaning Roller 100 Duplex Unit Duplex Models B269 B277 Only 101 Duplex Exit Sensor 101 Duplex Entrance Sensor 101 Duplex Inverter Sensor 102 Duplex Transport Motor 102 Duplex Inverter Motor 103 Duplex Control Board 103 Other Replacements 104 Quenching Lamp 104 High Voltage Power Supply Board 104 BICU Base Engine Image Control Unit 105 Main Motor 105 Rear Exha...

Page 6: ...XXX Drum 144 SP4 XXX Scanner 150 SP5 XXX Mode 156 SP6 XXX Peripherals 159 SP7 XXX Data Log 161 SP8 XXX History 165 SP9 XXX Etc 170 Using SP Modes 171 Adjusting Registration and Magnification 171 ID Sensor Error Analysis SP 2221 172 Display APS Data SP 4301 1 173 Memory Clear 174 Input Check SP 5803 176 Output Check SP 5804 179 Serial Number Input SP 5811 181 NVRAM Data Upload Download SP 5824 5825...

Page 7: ...canning 200 Overview 200 Scanner Drive 201 Original Size Detection in Platen Mode 202 Image Processing 205 Overview 205 SBU Sensor Board Unit 206 IPU Image Processing Unit 207 Video Control Unit VCU 218 Laser Exposure 219 Overview 219 Auto Power Control APC 220 LD Safety Switch 221 Photoconductor Unit PCU 222 Overview 222 Drive 223 Drum Charge 224 Overview 224 Charge Roller Voltage Correction 225 ...

Page 8: ...anism 241 Paper Lift Mechanism 242 Paper End Detection 242 Paper Size Detection 243 Side Fences 245 Paper Registration 245 Image Transfer and Paper Separation 247 Overview 247 Image Transfer Current Timing 248 Transfer Roller Cleaning 249 Paper Separation Mechanism 250 Image Fusing and Paper Exit 251 Overview 251 Fusing Unit Drive and Release Mechanism 252 Fusing Entrance Guide Shift 253 Pressure ...

Page 9: ...DI Machines 265 Overview 265 AOF 266 Timers 266 Recovery 266 Specifications 267 General Specifications 267 Supported Paper Sizes 271 Original Size Detection 271 Paper Feed and Exit 273 Machine Configuration 276 Optional Equipment 278 ARDF 278 ADF 278 One Tray Paper Tray Unit 279 Two Tray Paper Tray Unit 280 One Bin Tray 280 ...

Page 10: ...metal parts of the fusing unit become extremely hot while the copier is operating Be careful to avoid touching those components with your bare hands Health Safety Conditions Toner and developer are non toxic but if you get either of them in your eyes by accident it may cause temporary eye discomfort Try to remove with eye drops or flush with water as first aid If unsuccessful get medical attention...

Page 11: ...rn all chassis and laser subsystems to the factory or service depot when replacement of the optical subsystem is required Use of controls or adjustment or performance of procedures other than those specified in this manual may result in hazardous radiation exposure WARNING FOR LASER UNIT WARNING Turn off the main switch before attempting any of the procedures in the Laser Unit section Laser beams ...

Page 12: ...cable Environment Temperature and Humidity Chart Temperature Range 10C to 32C 50F to 89 6F Humidity Range 15 to 80 RH Ambient Illumination Less than 1 500 lux do not expose to direct sunlight Ventilation 3 times hr person or more Ambient Dust Less than 0 075 mg m3 2 0 x 10 6 oz yd3 Avoid areas exposed to sudden temperature changes 1 Areas directly exposed to cool air from an air conditioner 2 Area...

Page 13: ...s subjected to strong vibrations Machine Level Front to back Within 5 mm 0 2 of level Right to left Within 5 mm 0 2 of level Minimum Space Requirements Place the copier near the power source providing clearance as shown A front 750 mm 30 B left 150 mm 6 C rear 50 mm 2 D right 250 mm 10 The recommended 750 mm front space is sufficient to allow the paper tray to be pulled out Additional front space ...

Page 14: ...t the wall outlet is near the machine and easily accessible After completing installation make sure the plug fits firmly into the outlet Avoid multi wiring Be sure to ground the machine Input voltage North and South America Taiwan 110 120 V 60 Hz 12 A Europe Asia 220 240 V 50 60 Hz 7 A ...

Page 15: ...s A Socket for ADF ARDF Rated voltage output max DC24 V B Socket for paper tray unit Rated voltage output max DC24 V Accessory Check Check that you have the accessories in this list Basic Machines No Description Q ty 1 NECR English Multi language 17 27 19 29 1 2 EU Safety Sheet 27 22 24 26 1 3 Laser Decal 27 22 24 26 19 28 29 1 4 Model Name Plate 22 29 1 ...

Page 16: ... 1 5 General Setting Guide 19 29 1 6 Copy Reference 19 29 1 7 Printer Scanner Reference 19 29 1 8 Network Reference 19 29 1 9 Quick Guide Copy Edition 19 29 1 10 Quick Guide Printer Scanner Edition 19 29 1 11 Manual for this machine 19 29 1 12 Safety Information 19 29 1 Installation Procedure Unplug the machine power cord before starting the following procedure 1 Remove filament tape and other pad...

Page 17: ...Open the front door and remove the toner bottle holder A 3 Open the right door B and remove the PCU photoconductor unit C 4 Separate the PCU into the upper part and the lower part x 5 5 Put a sheet of paper on a level surface and place the upper part on it ...

Page 18: ...ou have spilled it remove the developer by using a magnet or magnetized screwdriver Do not turn the gear E too much The developer may spill 7 Reassemble the PCU and reinstall it 8 Shake the toner bottle F several times Do not remove the bottle cap G before you shake the bottle 9 Remove the bottle cap G and install the bottle on the holder Do not touch the inner cap H 10 Set the holder with the ton...

Page 19: ...ional ARDF ADF or platen cover 13 Plug in the main power cord and turn on the main switch 14 Activate the SP mode and execute Devlpr Initialize SP 2214 1 15 Wait until the message Completed shows about 45 seconds 16 Activate the User Tools and select the menu Language 17 Specify a language This language is used for the operation panel 18 Load the paper in the paper tray and make a full size copy a...

Page 20: ... Platen Cover Installation Accessory Check Check that you have the accessories indicated below No Description Q ty 1 Stepped Screw 2 Installation Procedure Unplug the machine power cord before starting the following procedure Install the platen cover x 2 ...

Page 21: ...Check the quantity and condition of the accessories against the following list No Description Q ty 1 Scale Guide 1 2 DF Exposure Glass 1 3 Stud Screw 2 4 Knob Screw 2 5 Original Size Decal 2 6 Screwdriver Tool 1 7 Attention Decal Top Cover 1 8 Stamp Cartridge 1 9 Installation Procedure 1 ...

Page 22: ...e the left scale A x 2 3 Place the DF exposure glass B on the glass holder Make sure that the white mark C is on the bottom at the front end 4 Peel off the backing D of the double sided tape attached to the rear side of the scale guide E then install the scale guide x 2 removed in step 2 5 Install the two stud screws F 6 Mount the ARDF on the copier and then slide it to the front ...

Page 23: ...7 Secure the ARDF unit with the knob screws G 8 Connect the cable H to the copier 9 Attach the appropriate original size decal I as shown 10 Attach an attention decal to the top cover The attention decals in the package are written in different languages ...

Page 24: ... 06 15 11 Open the ARDF J 12 Install the stamp cartridge K to the ARDF 13 Make a full size copy and check that the side to side and leading edge registrations are correct If they are not adjust the side to side and leading edge registrations p 114 ...

Page 25: ...heck the quantity and condition of the accessories against the following list No Description Q ty 1 Scale Guide 1 2 DF Exposure Glass 1 3 Stud Screw 2 4 Fixing Screw 2 5 Original Size Decal 2 6 Screwdriver Tool 1 7 Attention Decal Top Cover 1 8 Stamp Cartridge 1 9 Installation Procedure 1 ...

Page 26: ...ve the left scale A x 2 3 Place the DF exposure glass B on the glass holder Make sure that the white mark C is on the bottom at the front end 4 Peel off the backing D of the double sided tape attached to the rear side of the scale guide E then install the scale guide x 2 removed in step 2 5 Install the two stud screws F 6 Mount the ADF on the copier and then slide it to the front ...

Page 27: ... 18 7 Secure the ADF unit with the fixing screws G 8 Connect the cable H to the copier 9 Attach the appropriate scale decal I as shown 10 Attach an attention decal to the top cover The attention decals in the package are written in different languages ...

Page 28: ...stamp cartridge K to the ADF 13 Turn the main power switch on Then check if the document feeder works properly 14 Make a full size copy and check that the side to side and leading edge registrations are correct If they are not adjust the side to side and leading edge registrations p 114 ...

Page 29: ...ist No Description Q ty 1 Screw M4x10 10 2 Unit Holder 2 x 2 pieces 3 Adjuster 1 4 Unit Holder 2 Installation Procedure If the optional printer unit is installed Print out all data in the printer buffer Disconnect the network cable Unplug the machine power cord before starting the following procedure 1 Remove the strips of tape Make sure that you have removed all the strips of tape ...

Page 30: ...emoving the tape that secures the peripheral components and cardboard to the paper tray make sure that there is no tape and or tape reside remaining on the tray 2 Attach the adjuster A to the base plate as shown This step is not necessary if a cabinet is installed 3 Remove the cover B 1 rivet ...

Page 31: ... on the paper tray unit make sure that the harness C is safe The paper tray unit does not function properly if the harness is damaged 5 One tray copier model B268 B276 Remove the 1st tray cassette D Two tray copier models B269 B277 Remove the 2nd tray cassette D 6 Install the two screws E 7 Reinstall the tray cassette ...

Page 32: ...cting harness G to the copier There are cutouts for the plugs on both sides The left side has one cutout and the right side has two 10 Reinstall the cover removed in step 3 1 rivet 11 Install the four brackets with long supports H and covers I 2 screws each These long supports prevent the unit from tipping over ...

Page 33: ...ed at step 2 to fix the machine in place If a cabinet is installed this step is unnecessary 13 Load the paper in the paper trays and make full size copies from each tray Check if the side to side and leading edge registrations are correct If they are not adjust the registrations p 111 ...

Page 34: ...cription Q ty 1 Screw M4 x 10 2 2 Stepped Screw M4 x 10 2 3 Unit Holder 2 Installation Procedure If the optional printer unit is installed Print out all data in the printer buffer Disconnect the network cable Unplug the machine power cord before starting the following procedure 1 Remove the strips of tape Make sure that you have removed all the strips of tape and all the pieces of cardboard ...

Page 35: ... 18 Jan 06 26 2 Remove the cover A 1 rivet Before placing the copier on the paper tray unit make sure that the harness B is safe The paper tray unit does not function properly if the harness is damaged 3 Set the copier on the paper tray unit ...

Page 36: ...8 B269 Service Manual 18 Jan 06 27 4 One tray copier model B268 B276 Remove the 1st tray cassette C Two tray copier models B269 B277 Remove the 2nd tray cassette C 5 Install the two screws D 6 Reinstall the tray cassette ...

Page 37: ... the copier There are cutouts for the plugs on both sides The left side has one cutout and the right side has two 9 Reinstall the cover removed in step 2 10 Load the paper in the paper tray and make full size copies from tray Check if the side to side and leading edge registrations are correct If they are not adjust the registrations p 111 ...

Page 38: ... condition of the accessories No Description Q ty 1 Installation procedure 1 2 One bin sorter 1 3 Exit tray 1 4 Tapping screw M3 x 6 1 Installation Procedure Unplug the machine power cord before starting the following procedure 1 Remove the inverter tray A 2 Remove the rail B 2 knob screws 3 Remove the cover C 1 rivet ...

Page 39: ...cover E x 1 6 Disconnect the connector F 7 Cut the front cover as shown to make an opening G for the 1 bin tray 8 Install the 1 bin tray H 9 Make sure the connectors I are connected firmly 10 Fasten the screw 11 Connect the connector J that you removed in step 6 Make sure that the connector is connected ...

Page 40: ... as follows Keep the front end higher than the rear end Push the left hook into the opening in the copier Push the right hook into the opening in the copier 15 Pull the support N out of the left end of the exit tray 16 Insert the support into the left end of the paper exit tray O of the copier 17 Turn the main switch on 18 Check the operation ...

Page 41: ...ne power cord before starting the following procedure 1 Remove the exposure glass 2 Remove the left cover 3 Pass the connector A through the opening B 4 Install the anti condensation heater C as shown 5 Join the connectors A D 6 Clamp the harness with the clamp E 7 Reinstall the left cover and exposure glass ...

Page 42: ...an 06 33 Tray Heaters Unplug the machine power cord before starting the following procedure Upper Tray Heater 1 Remove the 1st tray cassette A 2 Remove the rear cover 3 Pass the connector B through the opening C and install the tray heater D x 1 ...

Page 43: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 34 4 Install the relay harness E 5 Fix the harness with the clamp F 6 Reinstall the 1st tray cassette and the rear cover ...

Page 44: ...l Only 1 Remove the 2nd tray cassette A 2 Remove the rear lower cover 3 B277 B269 only Remove the DCB B with bracket x 4 x 3 4 Pass the connector C through the opening D and install the tray heater E x 1 5 Join the connectors F 6 Reinstall the 2nd tray cassette DCB and rear lower cover ...

Page 45: ...Manual 18 Jan 06 36 Tray Heaters For The Optional Paper Feed Units 1 Remove the rear cover A for the paper tray unit One tray paper feed unit Two tray paper feed unit 2 Two tray unit only Remove the cable guide B 3 Install the clamps C ...

Page 46: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 37 One tray paper feed unit Two tray paper feed unit 4 Pass the connector D through the opening E 5 Install the tray heater F x 1 ...

Page 47: ...aper feed unit Two tray paper feed unit 6 Clamp the cables G as shown 7 Join the connectors H 8 Two tray unit only Reinstall the cable guide 9 One tray copier model B268 B276 Remove the 1st tray cassette Two tray copier models B269 B277 Remove the 2nd tray cassette ...

Page 48: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 39 10 Remove the two screws I and install the two hexagonal socket screws J 11 Reinstall the 1st tray 2nd tray s and rear cover ...

Page 49: ...procedure 1 Remove the left cover 2 Remove the rear cover 3 Cut the cap A with nippers 4 Punch out the small hole B using a screwdriver 5 Hold the key counter plate nuts C on the inside of the key counter bracket D and insert the key counter holder E 6 Secure the key counter holder to the bracket x 2 7 Install the key counter cover F x 2 ...

Page 50: ...an 06 41 8 Connect the connector G to CN126 on the BICU 9 Hold the harness with the clamps H I J The relay harness is not included in the key counter bracket accessories 10 Join the relay harness K with the connector L 11 Reinstall the rear cover ...

Page 51: ...n the connectors O 15 Pass the joined connectors through the opening of the key counter holder assembly P and put the connectors inside the assembly 16 Hook the key counter holder assembly onto the stepped screw N Check that the harness is not caught between the left cover and the key counter holder assembly 17 Secure the key counter holder assembly with the screw Q ...

Page 52: ...Cover CPS NA 1 2 Cover CPS EU 1 3 Ferrite Core B866 only 1 4 Tapping Screw M3X6 6 5 Sheet EULA 1 6 Seal Caution 1 7 Installation Procedure 1 Installing Expansion Component Unplug the machine power cord before starting the following procedure 1 Remove the rear cover A x 6 2 Remove one screw B from the BICU ...

Page 53: ...U E is not damaged and that the three openings F G H hold the controller box 4 Fasten the screws x 7 5 Attach the ferrite core I to the network cable J The end of the ferrite core must be about 10 cm 4 from the end of the cable K This procedure is only for machines with the B866 option 6 Re attach the rear cover A x 6 ...

Page 54: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 45 Installing Panels and Keys 1 Remove the dummy cover A from the operation panel 2 Install the printer scanner panel B on the operation panel ...

Page 55: ...cs cloth 1st mirror C C Optics cloth 2nd mirror C C Optics cloth 3rd mirror C C Optics cloth Scanner guide rails C Do not use alcohol Platen cover I C Replace the platen sheet if necessary Blower brush or alcohol Exposure glass C C Blower brush or alcohol Toner shield glass C Blower brush APS sensors C Blower brush Drum Area EM 60k 120k AN NOTE PCU I Drum R Developer R Charge roller R Cleaning bru...

Page 56: ...lers C C Clean with water or alcohol Paper feed guides C C Clean with water or alcohol Paper dust Mylar C C Clean with water or alcohol Fusing Unit EM 60k 120k AN NOTE Hot roller R Pressure roller R Pressure roller cleaning roller R Hot roller bushings I Pressure roller bushing R Hot roller stripper pawls R C Dry cloth Thermistor C C Dry cloth Cleaning roller bushing C C Dry cloth ADF ARDF 80k AN ...

Page 57: ...nit 60k 120k AN NOTE Paper feed rollers R C Dry or damp cloth Bottom plate pads C C Dry cloth Paper feed guides C C Clean with water or alcohol Friction pads R C Dry or damp cloth Relay clutch B384 only I Feed clutches B384 only I Relay roller B384 only C C Dry cloth ...

Page 58: ...to Reset the PM Counter After preventive maintenance work reset the PM counter SP 7804 1 as follows 1 Activate the SP mode p 139 2 Select SP 7804 1 Reset PM Counter 3 Press the OK key A The message Execute shows 4 Press the button B below the message Execute ...

Page 59: ...B269 Service Manual 18 Jan 06 50 5 The messages Execute followed by Cancel and Execute show 6 To reset the PM counter press the button C below the message Execute 7 Wait until the message Completed shows 8 Quit the SP mode ...

Page 60: ...dissolve the drum surface 3 Store the PCU in a cool dry place 4 Do not expose the drum to corrosive gases ammonia etc 5 Do not shake a used PCU as this may cause toner and developer to spill out 6 Dispose of used PCU components in accordance with local regulations Transfer Roller 1 Never touch the surface of the transfer roller with bare hands 2 Be careful not to scratch the transfer roller as the...

Page 61: ...er pawls and their tension springs 3 Do not touch the fusing lamp and rollers with bare hands 4 Make sure that the fusing lamp is positioned correctly and that it does not touch the inner surface of the hot roller Paper Feed 1 Do not touch the surface of the paper feed rollers 2 To avoid misfeeds the side and end fences in each paper tray must be positioned correctly so as to align with the actual...

Page 62: ...s and Lubricants Part Number Description Q ty A0069104 Scanner Positioning Pins 4 pins set 1 set A2929500 Test Chart S5S 10 pcs set 1 set VSSM9000 FLUKE 87 Digital Multimeter 1 N8036701 4MB Flash Memory Card 1 A2579300 Grease Barrierta S552R 1 52039502 Grease G 501 1 ...

Page 63: ...anual 18 Jan 06 54 Exterior Covers Operation Panel Rear Cover 1 Unplug the DF cable A if installed 2 Rear cover B x 6 Rear Lower Cover Two tray Models Only 1 Rear cover see above or tray harness cover A 1 rivet 2 Rear lower cover B x 2 ...

Page 64: ...tray A x 2 Upper Covers 1 Platen Cover ARDF or ADF if installed 2 Rear cover 3 Left upper cover A x 2 4 Front upper left cover B x 3 5 Operation panel C x 4 x 1 6 Right upper cover D x 1 3 hooks 7 Push the cover to the rear side to release the hooks 8 Top rear cover E x 1 ...

Page 65: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 56 Left Cover 1 Left cover A x 3 Front Cover 1 Pull out the top paper tray 2 Open the front door A 3 Front cover B x 4 ...

Page 66: ...77 B268 B269 Service Manual 18 Jan 06 57 Front Right Cover 1 Open the front door A 2 Front right cover B x 1 Right Rear Cover 1 Right upper cover p 55 2 Open the duplex unit B269 B277 only 3 Right rear cover A x 1 ...

Page 67: ...7 1 Right rear cover see above 2 Open the right door A 3 Open the clamps B and disconnect the two connectors C or three connectors B269 B277 4 Right door By pass Tray 1 Right rear cover above 2 Open the right door 3 Release the by pass tray cable from the clamps see B on the preceding ...

Page 68: ...77 only 5 Front side clip ring B 6 Front side pin C You can push the pin from behind the right door 7 Front side tray holder arm D 8 Remove the rear side clip ring pin and tray holder arm in the same manner 9 By pass tray E Left Lower Cover Two tray Models Only 1 Left lower cover A x 2 Right Lower Cover Two tray Models Only 1 Right lower cover A 1 pin ...

Page 69: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 60 Platen Cover Sensor 1 Top rear cover 2 Platen cover sensor A x 1 ...

Page 70: ... Rear scale B x 3 4 Exposure glass C Make sure that the mark is at the rear left corner and that the left edge is aligned to the support on the frame when you reinstall the exposure glass DF Exposure Glass 1 Front upper left cover p 55 2 Left scale A 3 DF exposure glass D Make sure that the mark E is on the bottom at the front end when reinstall the exposure glass ...

Page 71: ... of the lens assembly black part is adjusted before shipment Do not grasp the PCB or the lens assembly when you handle the lens block The lens assembly may slide out of position 1 Exposure glass p 61 2 Lens cover A x 5 3 Disconnect the flat cable B 4 Lens block C x 4 Adjust the image quality p 111 after you install a new lens block ...

Page 72: ...re the front end of the lamp is visible 4 Place one hand under the lamp stabilizer board A and release the hook B 5 Lamp stabilizer board x 2 6 Press the plastic latch C and push the front end of the lamp toward the rear 7 Lamp D with the cable Original Width Length Sensor 1 Exposure glass p 61 2 Original width sensor A x 1 x 1 3 Lens block p 62 4 Original length sensor B x 1 x 1 ...

Page 73: ... length sensors for the copier to detect the following original sizes 8K SEF 270 x 390 mm 16K SEF 195 x 270 mm 16K LEF 270 x 195 mm After you have rearranged the positions the sensors work as listed in the table Rearrange the sensor positions as follows Original Size Length Sensors Width Sensors 8K SEF L1 L2 W1 W2 16K SEF X X X O 16K LEF X O O O 16K SEF O O X O 1 Specify SP mode settings Select SP...

Page 74: ...s C D 6 Turn on the main switch and check the operations Scanner Motor 1 Left upper cover front upper left cover operation panel top rear cover p 55 2 Exposure glass p 61 3 Rear exhaust fan A B269 B277 only 4 Scanner motor B x 3 x 1 1 spring 1 belt Install the belt first and then set the spring when you reassemble Fasten the leftmost screw viewed from the rear and fasten the other two screws Adjus...

Page 75: ...al 18 Jan 06 66 Scanner Home Position Sensor 1 Left upper cover top rear cover p 55 2 Exposure glass DF exposure glass if installed p 61 3 Disconnect the connector A 4 Scanner left lid B x 7 5 Sensor tape C 6 Scanner home position sensor D ...

Page 76: ...parallel with the side frames A or when you have replaced one or more of the scanner belts To adjust the scanner positions do either of the following Adjust the belt contact points on the first scanner See Adjusting the First Scanner Contact Points below Adjust the belt contact points on the scanner bracket See Adjusting the Second Scanner Contact Points below The two actions above have the same o...

Page 77: ...en the 2 screws A F 5 Slide the 1st and 2nd scanners or one of them to align the following holes and marks 6 The adjustment holes in the first scanner 7 The adjustment holes in the second scanner 8 The alignment marks on the frames 9 Insert the positioning tools D E through the holes and marks 10 Check that the scanner belts B C G H are properly set between the bracket and the 1st scanner 11 Tight...

Page 78: ... or platen cover 2 Operation panel top rear cover p 55 3 Exposure glass p 61 4 Rear exhaust fan A x 2 5 Controller bracket B x 3 6 Disconnect the platen cover sensor connector C 7 Rear frame D x 7 8 Scale bracket E x 2 9 Loosen the 2 screws F 10 Slide the 2nd scanner to align the following holes and marks ...

Page 79: ...er 12 The adjustment holes in the second scanner 13 The alignment marks on the frames 14 Insert the positioning tools G H through the holes and marks 15 Check that the scanner belts are properly set in the brackets 16 Remove the positioning tools 17 Reassemble the machine and check the operation ...

Page 80: ...06 71 Laser Unit The laser beam can seriously damage your eyes Be absolutely sure that the main power switch is off and that the machine is unplugged before you access the laser unit Location Of Caution Decal Toner Shield Glass 1 Open the front door ...

Page 81: ...ss the toner shield glass cover B to the left and pull it out 4 Pull out the toner shield glass C Laser Unit 1 Toner shield glass p 71 2 Copy tray p 55 3 Pull out the upper paper tray 4 Front cover p 56 5 Laser unit A x 2 x 4 The screw at the left front position B is longer than the other three ...

Page 82: ...l 18 Jan 06 73 LD Unit Do not touch the paint locked screw A The LD position is adjusted before shipment 1 Laser unit p 71 2 LD unit B x 1 Do not screw the LD unit in too tightly when you install it Polygonal Mirror Motor 1 Laser unit p 71 ...

Page 83: ... and output the Trimming Area pattern pattern 10 3 Make sure that the four corners of the pattern make right angles If they make right angles you do not need to adjust the laser unit alignment If they do not make right angles go on to the next step 4 Check the screw position on the lever B If the screw is in the hole C go on to the next step If the screw is in the slot D loosen the screw on the le...

Page 84: ...When you rotate the lever clockwise or counterclockwise by one notch of the lever the corners of the pattern shift by 0 4 mm from the leading and trailing edges See the trim pattern made in step 2 and find how much the corners should be shifted 10 Tighten the screw A 11 Tighten the screws on the laser unit 12 Reinstall the copy tray 13 Print the trim pattern and check the result Do the procedure a...

Page 85: ... PCU Section PCU 1 Toner bottle with the holder A 2 Open the right door 3 Press the latch B and pull out the PCU C Do not touch the OPC drum surface with bare hands 4 Load new developer p 80 5 Do SP 2214 to reinitialize the TD sensor when you reassemble ...

Page 86: ...es toner and developer to spill out 1 PCU Previous procedure 2 Pawl A Pull down the pawl and release the bottom end 3 Toner density sensor B x 1 The toner density sensor is taped to the bottom of the PCU Pry it off with a regular screwdriver 4 After reinstalling the pick off pawls or toner density sensor adjust the image quality p 81 ...

Page 87: ... section C from the developer section D To ensure that the left side gears line up keep the drum cover E closed when reinserting the front side piece 5 Pry out the drum retaining clip F Install the clip in the same orientation with the lip facing away from the drum shaft when you reassemble 6 OPC drum G 7 When reassembling adjust the image quality p 81 ...

Page 88: ...epped screw B 4 Charge roller C and cleaning brush D with the holders and springs Turn the gear E as necessary so that the rear holder F comes out 5 When reassembling adjust the image quality p 81 Cleaning Blade 1 Drum charge roller Previous procedure 2 Cleaning blade B x 2 3 When reassembling adjust the image quality p 81 Reassembling ...

Page 89: ...ng full length of the new cleaning blade Developer 1 PCU p 76 2 To let the toner fall to the development section gently tap about eight different spots on the top of the PCU with a screwdriver Each spot must be approximately at an equal distance from the next spot 3 Reinstall the PCU in the copier 4 Turn the main switch on 5 Open and close the front door and wait for the machine to rotate the deve...

Page 90: ...ith a new one 1 Take 5 sample copies 2 If black dots dropped toner show on any of the copies continue as follows If all copies are clean you don t need to do the following steps 3 Remove the PCU from the mainframe 4 Tap the top of the PCU with a screwdriver at eight evenly spaced locations two or three taps at each spot to knock the recycled toner down into the development section 5 Put the PCU ba...

Page 91: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 82 Toner Supply Motor 1 Copy tray p 55 2 Open the front door 3 Toner bottle holder p 76 4 Toner supply motor A x 1 ...

Page 92: ... Jan 06 83 Paper Feed Section Paper Feed Roller 1 Paper cassette 2 Clip A 3 Push the shaft back through the opening and tilt it up If the black plastic bushing B comes off make sure you remount it when reinstall the shaft 4 Paper feed roller C ...

Page 93: ...ice Manual 18 Jan 06 84 Friction Pad 1 Paper cassette 2 Clip A 3 Push the shaft back through the opening so that the roller moves clear of the friction pad 4 Friction pad B Paper End Sensor 1 Paper cassette 2 Paper end sensor A x 1 ...

Page 94: ...nual 18 Jan 06 85 Exit Sensor Non Duplex Models 1 Open the right door 2 Front right cover p 57 3 Guide A x 2 4 Exit sensor bracket B x 1 5 Exit sensor C x 1 Duplex Models 1 Open the right door 2 Front right cover p 57 3 Upper guide D x 2 ...

Page 95: ...ller and Paper End Sensor 1 By pass tray p 58 If you have a support to keep the by pass tray within the reach of the connector cable you do not need to disconnect the connector When you do so use caution not to place too much load on the cable 2 Sensor holder A 3 By pass paper end sensor B x 1 4 By pass feed roller C ...

Page 96: ...r p 56 3 Right door p 58 4 Rear cover p 54 5 High voltage power supply p 89 6 Registration clutch p 89 7 Unhook the springs A and B at the rear and front sides 8 Guide support C and guide D x 1 x 1 9 Bushing E x 1 10 Gear F and bushing G x 1 11 Registration roller H with the image transfer unit I ...

Page 97: ...ay lever A x 1 1 pin 3 Lift the upper tray B 4 By pass paper size switch C x 1 When reinstalling the switch Move the paper guides to their middle position about halfway between fully open and fully closed and install the round gear so that the hole in the gear D aligns with the peg E on the sliding gear ...

Page 98: ...e Manual 18 Jan 06 89 Registration Clutch 1 Rear cover p 54 2 High voltage power supply board with the bracket A x 4 all connectors 3 Registration clutch B x 1 x 1 Registration Sensor 1 Open the right door 2 Registration sensor A x 1 ...

Page 99: ...igh voltage power supply board p 89 3 Clutch cover A x 2 2 bushings x 2 4 Paper feed clutch B x 1 5 By pass feed clutch C x 1 Make sure that the rotation prevention tabs D on the clutches fit correctly into the corresponding openings on the clutch cover when you reinstall Relay Clutch 1 Rear cover p 54 2 Relay clutch A x 1 ...

Page 100: ...18 Jan 06 91 Relay Sensor 1 Relay clutch Previous procedure 2 Sensor bracket A x 1 3 Relay sensor B x 1 Lower Paper Feed Clutch Two tray Models Only 1 Rear lower cover p 54 2 Clutch bracket A x 2 3 Lower paper feed clutch B x 2 1 bushing x 1 ...

Page 101: ...ice Manual 18 Jan 06 92 Vertical Transport Sensor Two tray Models Only 1 Right lower cover p 59 2 Metal plate A x 3 3 Vertical transport sensor B x 1 Paper Size Switch 1 Paper cassette 2 Switch cover A x 1 3 Paper size switch B x 1 ...

Page 102: ...ansfer Roller Do not touch the transfer roller surface with bare hands 1 Open the right door 2 Lift the plastic holders A with the image transfer roller B Leave the springs under the holders Make sure that the pegs C on the holders D engage with the springs when you reassemble ...

Page 103: ...B268 B269 Service Manual 18 Jan 06 94 Image Density Sensor 1 Open the right door 2 Plastic cover A 3 Image transfer roller Previous procedure 4 Push down on the notch B to free the sensor 5 Image density sensor C x 1 ...

Page 104: ...e fusing unit can become very hot Make sure that it has cooled down sufficiently before you handle it 1 Turn off the main switch and unplug the machine 2 Front right cover 3 Open the right door 4 Fusing unit A x 2 x 4 Thermistor 1 Fusing unit see above 2 Thermistors A x 1 x 1 ...

Page 105: ...ssure roller section B x 4 3 Front holding plate C x 1 4 Rear holding plate D x 1 5 Fusing lamp with the connector 600W E x 2 6 Fusing lamp with the connector 550W F x 2 Check that the front ends of the two lamps fit in the front holding plate when you reassemble They do not fit in there if you arrange the two lamps incorrectly ...

Page 106: ... Hot Roller Stripper Pawls 1 Hot roller section See above 2 Roller guard A x 3 3 Metal holders B 1 holder for each 4 Hot roller stripper pawls C 1 spring for each Hot Roller 1 Hot roller stripper pawls See above 2 Hot roller A 2 C rings 1 gear 2 bearings ...

Page 107: ...rmostat 1 Hot roller See above 2 Thermostat A x 2 for each Pressure Roller and Bushings 1 Separate the hot roller section from the pressure roller section p 96 2 Fusing entrance guide A x 2 3 2 springs B 4 2 pressure arms C 5 2 Bushings D 6 Pressure roller E ...

Page 108: ... machine feeds the OHP sheet into the fusing section stops it there for 20 seconds then ejects it to the copy tray 5 Press the key 6 Quit the SP mode 7 Check that the nip band the opaque stripe across the ejected OHP sheet is symmetrical with both ends slightly thicker than the center There is no standard value for the nip band on this machine Make the adjustment based on the band s appearance 8 I...

Page 109: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 100 Cleaning Roller 1 Pressure roller and bushings p 98 2 Cleaning roller A ...

Page 110: ...y Duplex Exit Sensor 1 Open the right door 2 Sensor bracket A x 1 Another bracket B comes off with the sensor bracket 3 Duplex exit sensor C x 1 Duplex Entrance Sensor 1 Open the right door 2 Lift the duplex guide A 3 Entrance sensor bracket B and bracket cover C x 2 4 Duplex entrance sensor D ...

Page 111: ...76 B277 B268 B269 Service Manual 18 Jan 06 102 Duplex Inverter Sensor 1 Copy tray A x 2 2 Exit cover B x 1 3 Sensor bracket C x 1 x 1 4 Duplex inverter sensor D x 1 Duplex Transport Motor 1 Open the right door ...

Page 112: ...rom the frame and lower the right door 3 Cover A x 1 4 Motor bracket B x 4 x 1 5 Duplex transport motor C x 2 Duplex Inverter Motor 1 Rear cover 2 Exhaust fan p 106 3 Duplex inverter motor A x 2 x 1 Duplex Control Board 1 Rear lower cover p 54 2 Duplex control board A x 4 all connectors ...

Page 113: ...8 B269 Service Manual 18 Jan 06 104 Other Replacements Quenching Lamp 1 PCU p 76 2 Quenching lamp A x 1 High Voltage Power Supply Board 1 Rear cover p 54 2 High voltage power supply board A x 2 3 standoffs all connectors ...

Page 114: ...gine Image Control Unit 1 Rear cover p 54 2 BICU A x 7 all connectors 2 flat cables Remove the NVRAM B from the old BICU and install it on the new BICU when you replace the BICU The NVRAM keeps machine specific data Main Motor 1 Rear cover p 54 2 Main motor A x 4 x 1 ...

Page 115: ...over p 54 2 Rear exhaust fan A x 2 x 1 Reassembling Make sure that the arrow on the fan B points the outside of the copier when you reassemble The arrow indicates the direction of the air current Left Exhaust Fan 1 Rear cover p 54 2 Left cover p 56 3 Fan cover A x 3 4 Fan B x 3 x 1 Reassembling ...

Page 116: ...e Manual 18 Jan 06 107 Make sure that the arrow on the fan C points the outside of the copier when you reassemble The arrow indicates the direction of the air current PSU Power Supply Unit 1 Left cover p 56 2 PSU A All connectors x 6 ...

Page 117: ...he middle rear cover This step releases the topmost part of the BICU bracket High voltage power supply board with the bracket p 89 BICU with the bracket C x 6 If you have difficulty to remove the bracket remove the screw at the middle of the crosspiece see step 6 Main motor p 105 Crosspiece D x 3 Registration clutch p 89 ...

Page 118: ...arbox that drives the PCU Ground plate E x 2 Gearbox F x 5 1 belt Do not change the position of the spring G and make sure that the bushing H on the PCU drive shaft is in the correct position you when you reassemble You can adjust its position by rotating the gear I seen from the opening of the gearbox ...

Page 119: ...re to be installed in the gearbox These numbers show both on the gearbox and on the front exposed surface of each gear If the gears fall out start by finding gear number 1 and installing it onto location number 1 setting it into place so that the side with the printed number stays visible Then install the remaining gears 2 to 12 in the same way ...

Page 120: ...these adjustments Use the Trimming Area Pattern SP 5902 No 10 to print the test pattern for the printing adjustments below Set SP 5902 to 0 again after you complete these printing adjustments Registration Leading Edge Side to Side 1 Check the leading edge registration for each paper feed station and adjust each of these registrations using SP 1001 2 Check the side to side registration for each pap...

Page 121: ...ide blank margin 1 Check the trailing edge and right side edge blank margins and adjust them using the following SP modes SP mode Specification Trailing edge SP 2101 2 Right edge SP 2101 4 2 2 5 1 5 mm Leading edge SP 2101 1 Left edge SP 2101 3 2 1 5 mm A Trailing Edge Blank Margin B Right Edge Blank Margin C Leading Edge Blank Margin D Left Edge Blank Margin Main Scan Magnification 1 Print the si...

Page 122: ...Mode 1 Place the test chart on the exposure glass and make a copy from one of the feed stations 2 Check the leading edge and side to side registration and adjust as necessary with the following SP modes SP mode Specification Leading edge SP 4010 Side to side SP 4011 2 1 5 mm A Leading edge registration B Side to side registration Magnification A Main scan magnification B Sub scan magnification Mai...

Page 123: ...y Adjustment This procedure adjusts the standard white density level Do this adjustment after you do any of the following After you replace the standard white plate After you replace the NVRAM on the BICU But note that you do not need to carry out this adjustment if you have replaced the BICU itself but retained the previous NVRAM board by moving it over onto the new BICU After you perform a memor...

Page 124: ...ropriate SP modes as follows SP mode Side to side registration SP 6006 1 Leading edge registration SP 6006 2 Blank margin for the trailing edge SP 6006 3 Side to side registration Duplex back side SP 6006 4 Sub scan Magnification A Sub scan magnification Make a temporary test chart as shown above with A3 11 x 17 paper 1 Place the temporary test chart on the ADF and make a copy from one of the feed...

Page 125: ...d by incorrect sensor detection the SC can be reset by turning the main power switch off and on Turn the main power switch off and on C The main machine can be operated as usual excluding the unit related to the service call Turn the main power switch off and on D The SC history is updated The machine can be operated as usual The SC will not be displayed Only the SC history is updated If the probl...

Page 126: ...120 B The scanner home position sensor does not detect the off condition during initialization or copying Scanner home position sensor defective Scanner drive motor defective Scanner home position sensor connector defective Scanner drive motor connector defective BICU board defective Scanner home position error 2 121 B The scanner home position sensor does not detect the on condition during initia...

Page 127: ...fective Automatic SBU adjustment error 145 D During the automatic SBU adjustment the machine detects that the white level read from the white plate or paper is out of range p 151 Exposure lamp defective Dirty white plate Incorrect position or width of white plate scanning p 151 BICU board defective SBU board defective Image transfer error 193 B Scanned images are not transferred to the controller ...

Page 128: ... signal F GATE error 321 C The laser writing signal F GATE fails to turn Low after the laser crosses 5 mm on the drum surface from the laser writing start position BICU board defective The fax controller or printer controller has a poor connection Fax controller or printer controller defective Laser synchronization error 322 B The main scan synchronization detector board cannot detect the laser sy...

Page 129: ...back signal for the transfer roller is not detected High voltage supply board defective Poor connection of the PCU Transfer separation unit set incorrectly Transfer roller damaged Transfer roller leak error 2 402 B A current leak signal for the transfer roller is detected A current feedback signal for the transfer roller is not detected High voltage supply board defective Poor connection of the PC...

Page 130: ...ray 4 lift motor malfunction optional two tray paper tray unit 504 C The paper lift sensor fails to activate twice continuously after the tray lift motor has been on for 18 seconds Paper lift sensor defective Tray lift motor defective Too much load on the drive mechanism Poor tray lift motor connection Paper feed motor lock optional paper tray units 506 C A motor lock signal is not detected for mo...

Page 131: ...ure is over 250C for 1 second detected by the fusing temperature monitor circuit Fusing thermistor defective Power supply board defective Fusing lamp overheat error center 545 A After the fusing temperature reaches the target temperature the fusing lamp does not turn off for 12 consecutive seconds Fusing thermistor defective or out of position Power supply board defective Unstable fusing temperatu...

Page 132: ... fusing temperature rises less than 7 degrees in 2 seconds and this continues 5 times consecutively The fusing temperature is not detected in 25 or 35 seconds Fusing thermistor defective or out of position Fusing lamp open Power supply board defective Fusing overheat error rear 553 A The fusing temperature is over 230C for 1 second detected by the thermistor Fusing thermistor defective Power suppl...

Page 133: ...motor error 590 B The CPU detects an exhaust fan lock signal for more than 5 seconds Loose connection of the exhaust fan motor Too much load on the motor drive Rear exhaust fan motor error 591 B The CPU detects an exhaust fan lock signal for more than 5 seconds Loose connection of the exhaust fan motor Too much load on the motor drive Communication error between BICU and ADF 620 B The BICU does no...

Page 134: ...with the MF accounting device a brake signal is issued Accounting device defective Loose connection Accounting RAM error 634 C An error is detected in the RAM that saves the information on the MF accounting Accounting device defective Accounting battery error 635 B An error is detected in the battery that is in the MF accounting device Accounting device defective Engine start error 670 C The engin...

Page 135: ...n the ADF main board and the BICU ADF gate abnormal 2 761 B The FGATE signal is not issued from the ADF within 30 seconds after the ADF starts feeding ADF connector defective SBU board defective ADF gate abnormal 3 762 B The FGATE signal is not terminated by the ADF within 60 seconds after the ADF starts feeding ADF connector defective SBU board defective Startup without video output end error 800...

Page 136: ... an error during the self diagnostic test Controller board defective Download controller firmware again Self Diagnostic Error ASIC 821 B The ASIC returned an error during the self diagnostic test because the ASIC and CPU timer interrupts were compared and determined to be out of range Controller board defective Self diagnostic Error Network Interface 823 C The network interface board returned an e...

Page 137: ...agnostic test Controller board defective Download controller firmware again Self diagnostic Error Optional RAM 829 C The optional RAM returned an error during the self diagnostic test Replace the optional memory board Controller board defective Self diagnostic Error Clock Generator 838 B A verify error occurred when setting data was read from the clock generator via the I2C bus Replace the control...

Page 138: ...dware configuration incorrect including memory shortage Printer font error 921 C Necessary font files are not found Font file not installed Memory error 928 B The machine detects a discrepancy in the write read data during its write read test done at power off on and at recovery from low power or night off mode Memory defective BICU defective Poor connection between BICU and memory Printer applica...

Page 139: ...ation settings in the nonvolatile ROM and RAM are different p 158 First machine start after the NVRAM is replaced Incorrect localization setting NVRAM defective Print image transfer error 984 B Print images are not transferred Controller defective BICU board defective Poor connection between controller and BICU Software performance error 990 B The software attempted to perform an unexpected operat...

Page 140: ...tion selected by a key press on operation panel does not start or ends abnormally Download the firmware for the application that failed An option required by the application RAM board is not installed 998 B Application start error After power on the application does not start within 60 s All applications neither start nor end normally Download controller firmware Replace the controller board An op...

Page 141: ...gging is not performed with SC999 If the machine loses power while downloading or if for some other reason the download does not end normally this could damage the controller board or the PCB targeted for the download and prevent subsequent downloading If this problem occurs the damaged PCB must be replaced ...

Page 142: ...n the 1st paper tray is selected even if there is paper in the tray Upper Paper End 114 2 BICU Shorted The Paper End indicator does not light when the 1st paper tray is selected even if there is no paper in the tray The Paper Jam message will appear whenever a copy is made from the 1st paper tray Open The Paper Jam message will appear whenever a copy is made from an optional paper tray unit Vertic...

Page 143: ...y is made paper has not reached the sensor Exit 124 2 BICU Shorted The Paper Jam message appears even if there is no paper at the sensor Open Toner Density 125 3 BICU Shorted SC390 is displayed Open Image Density 123 2 BICU Shorted The toner density control process is changed see the note below the table Open Scanner H P 102 2 BICU Shorted SC120 shows Open APS and Auto Reduce Enlarge do not functi...

Page 144: ...age appears even if there is no paper at the sensor SC392 is activated when the CPU detects an ID sensor error during developer initialization SP 2214 However SC392 is not displayed on the LCD but simply logged in the SC log SMC printout unless the technician exits SP Mode as soon as an error message is displayed Switches Component CN Condition Symptom Open Upper Paper Size 115 1 2 4 BICU Shorted ...

Page 145: ... when feeding from this tray Open The Cover Open indicator is lit even if the right door is closed Right Door 124 5 BICU Shorted The Cover Open indicator is not lit even if the right door is open Open The Cover Open indicator is lit even if doors are closed Front Right Cover 130 1 BICU Shorted The Cover Open indicator is not lit even if doors are open Open The machine does not turn on Main 281 3 4...

Page 146: ...own Fuse Conditions All the fuses in the following table are on the power supply board Rating Fuse 120 V 220 240 V FU1 15A 125V 8A 250V FU2 5A 125V 2 5A 250V FU3 1A 250V 1A 250V FU4 4A 250V 4A 250V FU5 4A 250V 4A 250V FU6 4A 250V 4A 250V FU7 4A 250V 4A 250V ...

Page 147: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 138 LED Display BICU Number Function LED 1 Monitors the 5 V line for the CPU and the surrounding circuit Usually this LED is blinking ...

Page 148: ...he SSP Mode includes SP Mode programs and some special programs You need some extra knowledge to manipulate these special programs For details consult your supervisor Starting SP Mode 1 Type the keys as follows Clear Modes 1 0 7 2 Press the Clear Stop key and hold it down until the SP mode menu is displayed about 3 seconds Starting SSP Mode For the basic machine the machine without the optional co...

Page 149: ...ch value you can change The value in parentheses is the default value of the menu 2 Type a necessary value from the numeric keypad To switch between positive plus and negative minus values press the period asterisk key 3 To validate the value press the OK key To cancel the value press the cancel key E Activating Copy Mode You can activate the copy mode while the SP mode is running When you do so t...

Page 150: ...the printing leading edge registration from paper trays 1001 1 All Trays 1001 2 By pass 1001 3 Duplex 9 0 9 0 0 0 0 1 mm step p 111 Side to Side Registration 1002 Adjusts the printing side to side registration from each paper feed station using the Trimming Area Pattern SP 5902 No 10 Adjustments are supported for all 4 possible feed trays including optional trays The SP 1002 1 setting is applied t...

Page 151: ...he contact release control is disabled and the drive power is always transmitted to the fusing unit As a result the machine takes a longer time to warm up the fusing unit Use SP 1103 1 if fusing quality is low even when the room temperature is not very low 1103 1 Fusing Idling 0 No 1 Yes Fusing Temperature Adjustment 1105 Adjusts the target fusing temperature Center indicates the center of the rol...

Page 152: ...1 10 cycles 2 20 cycles 1108 Set Fusing Start 0 1s 1 1 5s 2 2s 1108 1 Specifies the interval for fusing temperature control p 254 1109 Nip Band Check 1109 1 Checks the fusing nip band p 99 1110 Fan Control Timer 1110 1 30 60 30 1 s step Inputs the fan control time The fan maintains normal speed for the specified time after occurrence of an SC or following entry into Warm up mode Low Power mode or ...

Page 153: ... printing runs when you enable this program SP 1911 1 and you select Thick Paper as the paper type of the by pass tray System Settings Tray Paper Settings Paper Type Bypass Tray SP2 XXX Drum 2001 Charge Roller Bias Adjustment Printing 2100 1500 1700 1 V step 2001 1 Adjusts the voltage applied to the charge roller when printing The actually applied voltage changes automatically as charge roller vol...

Page 154: ...opment roller when printing This can be adjusted as a temporary measure if faint copies are being produced due to an aging drum ID sensor pattern 2 LL 220 V 1 L 260 V 0 N 300 V 1 H 340 V 2 HH 380 V 2201 2 Adjusts the voltage applied to the development roller when generating the ID sensor pattern The actual voltage applied is this setting plus the value of SP 2201 1 The setting affects ID sensor pa...

Page 155: ...ts the current applied to the transfer roller when feeding from a paper tray Use a high setting if the user normally feeds relatively thick paper within spec from a paper tray p 248 Thick Special paper 2 4 mA 1 2 mA 0 0 mA 1 2 mA 2 4 mA 2301 2 Adjusts the current applied to the transfer roller when feeding from the by pass tray Use a high setting a if the user normally feeds relatively thick paper...

Page 156: ...not separate correctly This can cause tailing images ghosts of the vertical lines continuing past the bottom of the table This SP can be used to prevent this Interval 1 10 1 1 page step 2906 2 Changes the interval for the image shift specified by SP 2906 1 2908 Forced Toner Supply 2908 1 Forces the toner bottle to supply toner to the toner supply unit Press 1 to start The machine continues to supp...

Page 157: ... solid black image areas p 231 2923 Toner Recovery Time 2923 1 3 60 30 1 s step Adjusts the toner supply motor ON time used during toner recovery from Toner Near End or Toner End This setting is effective only if SP 2921 is set to 0 Since toner recovery is carried out in 3 second cycles the input value should be a multiple of 3 3 6 9 p 231 2925 Toner Supply Rate 2925 1 Adjusts the toner supply tim...

Page 158: ...s a risk that the drum may eventually begin to attract carrier after many more copies are made and toner runs out This attracted carrier may damage the drum Vref Limits 2929 Adjust the upper or lower Vref limit 2929 1 Upper 0 50 3 50 3 20 0 01V step DFU 2929 2 Lower 0 50 3 50 0 70 0 01V step DFU 2994 ID Sensor Detection Temperature 30 90 30 1 C step 2994 1 While the machine is recovering from an e...

Page 159: ...n direction for scanning The specification is 100 1 0 Main scan magnification is implemented in steps of 0 5 Accordingly your input value should be a multiple of 0 5 1 0 0 5 0 0 5 or 1 0 4010 Leading Edge Registration Scanner 5 0 5 0 0 0 0 1 mm step 4010 1 Adjusts the leading edge registration for scanning in platen mode p 111 The image moves toward the leading edge The image moves toward the trai...

Page 160: ...the white plate scan in the main scan direction The scan begins at the start position set above in SP 4015 1 and extends for the specified length The base value stored in the machine is 4 76 mm This SP setting specifies the offset from this base value 4301 Display APS Data 4301 1 Displays the status of the APS sensors and platen DF cover sensor p 191 4303 APS Small Size Original 0 No not detected ...

Page 161: ...2 SP 4305 1 is A4 LT 4428 Scan Auto Adjustment 4428 1 Performs the automatic scanner adjustment Use this SP mode after replacing the white plate 4901 SBU White Level Adjustment Black Display Error 0 Normal 1 Error 4901 1 Displays the return code of the black level adjustment When an error is detected SC143 or SC145 is generated Black Feedback EVEN 0 8191 4901 2 Displays the feedback value of the e...

Page 162: ...is indicates that the white level adjustment has been executed three times The white level adjustment can be executed 20 times or less Therefore if the value is 20 this indicates that the white level adjustment has ended abnormally as described the value 20 does not include the first execution If the white level adjustment is unsuccessful the machine uses the result of the latest successful white ...

Page 163: ...al 1 7 Special 2 8 Special 3 9 Special 4 10 Special 5 Scanner Gamma 4922 Selects text or photo as the priority output mode This setting is applied to all image processing modes of SP 4921 4922 1 Scanner Gamma Copy 0 System default 1 Text 2 Photo 4922 3 Notch Selection 4923 Selects the value of the center ID adjustment notch for the ID adjustment LEDs Normally the center notch is 3 range 1 5 If 1 i...

Page 164: ...iginals in SP 4921 4927 1 Line Width Correction Copy 2 2 0 1 step 4927 3 Line Width Correction Scanner 2 2 0 1 step Independent Dot Erase 4928 Selects the dot erase level Higher settings provide greater erasure This setting is only applied to the originals in SP 4921 4928 1 Independent Dot Erase Copy 2 2 0 1 step 4928 3 Independent Dot Erase Scanner 2 2 0 1 step Positive Negative 0 No 1 Yes 4929 I...

Page 165: ...SP 4921 4942 Black Line Erase 0 3 2 1 step 4942 1 Selects the black line erase level This setting is effective only when originals are scanned by the A R DF 0 No 1 Very weak 2 Weak 3 Strong This setting is applied regardless of what mode has been selected in SP 4921 SP5 XXX Mode 5001 All Indicators On 5001 1 All LEDs turn on The LCD turns on or off every 3 seconds Press the reset key to end this p...

Page 166: ...a job With 1 they are only cleared if the counter is removed at the end of a job With 2 they are not cleared at all under either condition With duplex copies the job settings are always preserved regardless of the setting of this SP mode 5121 Count Up Timing 0 Feed In 1 Exit 5121 1 Selects whether the key counter increments at time of paper feed in or at time of paper exit 5127 APS Mode 0 Enabled ...

Page 167: ...ssage shows 5811 Serial Num Input 5811 1 Setting Sets the machine serial number FA 5811 3 ID 2 Code Display Displays the ID 2 Code used for NRS 5812 Service TEL Service TEL Telephone 5812 1 Use this to input the telephone number of the service representative The number is displayed when a service call condition occurs To input a dash press To delete the current telephone number press Service TEL F...

Page 168: ...RAM becomes defective these names should be re registered Use the right arrow or left arrow key to scroll through the list of brand names To select a brand name press the OK key An asterisk indicates which manufacture is currently selected p 174 5918 A3 DLT Counter Display 0 Off 1 On 5918 1 Sets the key press display for the counter key This setting has no relation to SSP SP5 104 A3 DLT Double Cou...

Page 169: ...de to side registration for the rear side of duplex originals for ADF mode Use the key to select or before entering the value ADF Adjustment Sub scan Magnif 0 9 0 9 0 0 0 1 step 6006 5 Adjust the sub scan magnification for the ADF ADF Adjustment Original Curl Adj 0 No 1 Yes 6006 6 Enables or disables the skew adjustment for the reverse sides of originals When you enable SP6 006 6 adjust the distan...

Page 170: ...ter Paper Jam 0 9999 0 1 step 7502 1 Shows the total number of copy paper jams 7503 Counter Orgn Jam 0 9999 0 1 step 7503 1 Shows the total number of original jams Counter Each P Jam 0 9999 0 1 step 7504 Displays the total number of the paper jams classified by timing and location Counter Each P Jam At power on 7504 1 Paper jam occurs at power on Counter Each P Jam Off Regist NoFeed 7504 10 Paper ...

Page 171: ...Exit SN 7504 120 Paper is caught at the exit sensor previous page Counter Each P Jam Off Exit SN 7504 121 Paper does not reach the exit sensor Counter Each P Jam On Exit SN 7504 122 Paper is caught at the exit sensor Counter Each P Jam Off Dup Inverter 7504 123 Paper does not reach the duplex inverter sensor from the registration roller Counter Each P Jam On Dup Inverter 7504 125 Paper is caught a...

Page 172: ...reverse sensor Counter Each O Jam On Inverter SN 7505 215 The original is caught at the reverse sensor Counter Each O Jam Insufficient gap 7505 216 The distance between originals is not sufficient This jam can occur when the original is not of the standard size 7507 Dsply P Jam Hist 7507 1 Displays the latest 10 paper jam history The list below shows the possible 22 codes 1 10 11 12 21 22 31 32 50...

Page 173: ...leted is displayed SP 7807 1 does not reset the following logs SP 7507 Display Paper Jam History and SP 7508 Display Original Jam History 7808 Reset Counters 7808 1 Resets all counters except for the management counters The management counters are the counters that are not changed by NVRAM Download SP 5825 1 When the program ends normally the message the message Completed is displayed 7810 Reset K...

Page 174: ... is working Dsply Info Count Dsply ID S Work 7991 3 The total of the time when the ID sensor is working Dsply Info Count Dsply Dev Counter 7991 4 The total number of paper outputs Dsply Info Count Dsply ID Er Count 7991 5 The total number of ID sensor errors 7992 Reset Info Count Reset Info Count Reset Timer Count 7992 1 Clears the counter of SP 7991 1 Reset Info Count Reset ID Er Count 7992 5 Cle...

Page 175: ...of scanned originals by scanning jobs classified by paper size The following size is counted A3 DLT and larger 8221 ADF Org Feed 0 9999999 0 1 sheet step ADF Org Feed Front 8221 1 Displays the total number of scanned front sides of originals fed from the ADF ADF Org Feed Back 8221 2 Displays the total number of scanned reverse sides of originals fed from the ADF 8291 T Scan PGS TWAIN 0 9999999 0 1...

Page 176: ...an copier printer or scanner programs such as external application programs 8391 L size Prt PGS A3 DLT Larger 0 9999999 0 1 sheet step 8391 1 Displays the print count of the AS DLT size or larger paper 8411 Prints Duplex 0 9999999 0 1 sheet step 8411 1 Displays the total count of the duplex printing C PrtPGS Dup Comb 0 9999999 0 1 sheet step 8422 Displays the total print count of copier applicatio...

Page 177: ...r all application programs 8441 1 A3 8441 2 A4 8441 3 A5 8441 4 B4 8441 5 B5 8441 6 DLT 8441 7 LG 8441 8 LT 8441 9 HLT 8441 254 Other Standard 8441 255 Other Custom C PrtPGS Ppr Size 0 9999999 0 1 sheet step 8442 Displays the number of pages printed by the copier application program 8442 1 A3 8442 2 A4 8442 3 A5 8442 4 B4 8442 5 B5 8442 6 DLT 8442 7 LG 8442 8 LT 8442 9 HLT 8442 254 Other Standard ...

Page 178: ...ustom C PrtPGS Ppr Tray 0 9999999 0 1 sheet step 8451 Displays the total print count classified by paper source 8451 1 Bypass Tray 8451 2 Tray 1 8451 3 Tray 2 8451 4 Tray 3 8451 5 Tray 4 T PrtPGS Ppr Type 0 9999999 0 1 sheet step 8461 Displays the total print count classified by paper size This is the total for all application programs 8461 1 Normal 8461 4 Thick 8461 7 OHP 8461 8 Other C PrtPGS Pp...

Page 179: ...sheet step 8464 Displays the total print count classified by paper size This is the total for all application programs 8464 1 Normal 8464 4 Thick 8464 7 OHP 8464 8 Other 8522 C PrtPGS FIN Sort 0 9999999 0 1 sheet step 8522 1 Displays the total number of printing classified by paper size SP9 XXX Etc Not used in this machine ...

Page 180: ...Jan 06 171 Using SP Modes Adjusting Registration and Magnification To adjust the registration and magnification you need to use several service programs The chart shows an example of the procedure to adjust the machine in the basic configuration ...

Page 181: ...alysis SP 2221 The image quality may become very bad when the ID sensor does not operate properly However there is no such SC code that indicates ID sensor malfunction instead SP 2221 shows you some information on the ID sensor Check this information when the image quality ...

Page 182: ...1 00V Toner density very low ID sensor pattern not created SP 2221 3 Power PW in the display Vsg 3 5V when maximum power 979 is applied ID sensor defective ID sensor dirty Drum not get charged Power source for the ID sensor light SP 2221 4 Vsdp No Error Conditions SP 2221 5 Vt Vt 4 5V or Vt 0 2V TD sensor defective SP 2221 6 Vts Display APS Data SP 4301 1 Sensor Positions The APS auto paper select...

Page 183: ...DF Open data shows 1 or 0 indicating if the document feeder or platen cover is open or closed respectively The data is based on the output of the platen cover sensor A Memory Clear The basic machine the machine without the optional controller box stores all the data in the NVRAM on the BICU The data is cleared by SP 5801 2 see exceptions 002 Main Motor Reverse 003 Quenching Lamp The GDI machine th...

Page 184: ...values However the following settings are not cleared SP 5807 Area Selection SP 5811 1 Serial Num Input Code Set SP 5811 3 Serial Num Input ID2 Code Display SP 5812 1 Service TEL Telephone SP 5812 2 Service TEL Facsimile SP 5907 Plug Play SP 7 Data Log SP 8 History Use SP 5802 2 basic machine or SP 5998 1 GDI machine after you have replaced the BICU NVRAM or when the BICU NVRAM data is corrupted W...

Page 185: ...Select SP 5 801 basic machine or SP 5998 1 3 Press the OK key 4 Select Execute The messages Execute followed by Cancel and Execute show 5 Select Execute 6 When the program has ended normally the message Completed is displayed If the program has ended abnormally an error message shows 7 Turn the main switch off and on 8 Adjust the printer and scanner registration and magnification p 111 9 Refer to ...

Page 186: ... S Paper detected Not detected 012 Duplex Entrance S Paper detected Not detected 013 Duplex Exit S Paper detected Not detected 014 By pass PE S Paper detected Not detected 015 By pass P Size S 1 016 Upper PE S Paper detected Not detected 017 Lower PE S Paper detected Not detected 018 Upper P Size SW 1 019 Lower P Size SW 1 020 BK Upper Paper End S Paper detected Not detected 021 BK Lower Paper End...

Page 187: ...etected Not detected 045 Platen Cover S Open Closed 046 1 bin Installed Installed Not installed 047 1 bin Exit S Paper detected Not detected 048 1 bin Paper S Paper detected Not detected 049 1 bin Tray S Open Closed 050 Fan Motor Lock High speed Not high speed 051 2 Tray BK Install Installed Not installed 053 HP Sensor Detected Not detected 054 Duplex Fan M Lock Locked Not locked 1 Paper Size Copi...

Page 188: ... A3 SEF North America HLT SEF HLT SEF HLT SEF HLT SEF HLT SEF LG SEF DLT SEF DLT SEF China B6 SEF B6 SEF A5 SEF A5 SEF B5 SEF A4 SEF B4 SEF A3 SEF 2 Paper Amount 10 Near end 11 About 25 00 About 75 00 About 100 3 Available Paper Feed Unit 00 None 20 2 tray paper feed unit 30 1 tray paper feed unit Output Check SP 5804 Conducting an Output Check To prevent mechanical or electrical damage do not kee...

Page 189: ...r High 006 Fan Motor Low 007 Registration Clutch 008 By pass Feed Clutch 009 Upper Feed Clutch 010 Lower Feed Clutch 011 BK Low Lift Motor Up 012 BK Low Lift Motor Down 013 Relay Clutch 014 BK Relay Clutch 015 BK Upper Feed Clutch 016 BK Lower Feed Clutch 017 BK Lift Motor 018 BK Up Lift Motor Up 019 BK Up Lift Motor Down 020 Duplex Inv Motor Reverse 021 Duplex Inv Motor Forward 022 Duplex Trans M...

Page 190: ...e numeric keypad and the optional operation panel A serial number consists of 11 characters You can change each character by pressing one of the first 11 keys on the numeric keypad For example when you press the key the first character of the serial number changes as follows 0 1 2 8 9 A B X Y Z When you press the key the second character changes likewise You can specify a digit 0 to 9 or a capital...

Page 191: ...before executing SP 5801 2 p 174 You can copy back the data from the flash card to the NVRAM as necessary NVRAM Upload SP 5824 1 1 Turn off the main switch 2 Remove the card cover B 1 rivet 3 Turn the face of the flash memory card A A is printed on it toward your left hand side and insert it into the card slot 4 Turn on the main switch 5 Start the SP mode and select SP 5824 1 6 The machine erases ...

Page 192: ...Remove the card cover B 1 rivet 3 Turn the face of the flash memory card A A is printed on it toward your left hand side and insert it into the card slot 4 Turn on the main switch 5 Start the SP mode and select SP 5825 1 6 The machine erases the current settings then writes the new settings onto the NVRAM on the BICU board This takes about 1 second If downloading fails an error message appears If ...

Page 193: ...main switch off 2 Remove the card cover B 1 rivet 3 Insert the flash memory card A 4 Press down the power switch on the operation panel and hold it and turn on the main switch 5 Select Execute C 6 Do not touch any key while the message Load Status shows This message indicates that the program is running ...

Page 194: ...This message indicates that the program has ended normally 8 Turn off the main switch 9 Remove the flash memory card 10 Replace the card cover B 1 rivet 11 Turn the main switch on 12 Check the operation GDI Printer Scanner Update Procedure 1 Turn the main switch off Remove the slot cover A 1 x ...

Page 195: ... B276 B277 B268 B269 Service Manual 18 Jan 06 186 2 Insert the flash memory card B as shown above 3 Turn on the main power switch Push the printer application key C 4 Push the OK key D and then push Execute ...

Page 196: ... Test Pattern Print SP 5902 1 Executing Test Pattern Printing 1 Specify the pattern number and press the OK key 2 Press the copy start key The copy mode is activated 3 Specify copy settings and press the key 4 To return to the SP mode press the key Test Patterns Test Patterns Using VCU No Pattern 0 No print 1 Vertical Lines Single Dot 2 Horizontal Lines Single Dot 3 Vertical Lines Double Dot 4 Hor...

Page 197: ...ns Using IPU No Pattern 30 Vertical Lines Single Dot 31 Horizontal Lines Single Dot 32 Vertical Lines Double Dot 33 Horizontal Lines Double Dot 34 Isolated Four Dots 35 Grid Pattern Double Dot 36 Black Band Vertical 1024 Dots 37 Grayscales Horizontal 512 Dots 38 Grayscales Vertical 256 Dots 39 ID Patch 40 Cross 41 Argyle Pattern 128 Dot Pitch 42 Square Gradation 64 Grades 43 Square Gradation 256 G...

Page 198: ...ch the vertical transport sensor in the optional paper feed unit 032 Paper is caught at the vertical transport sensor in the optional paper feed unit 050 Paper does not reach the registration sensor from the by pass tray 060 Paper does not reach the registration sensor during reverse side printing for duplex printing 070 Paper is caught at the registration sensor 120 Paper is caught at the exit se...

Page 199: ...ist Print 069 Heading1 print 071 Heading3 print 072 Group List Print 128 ACC Pattern 129 User Color Pattern or 160 ACC Pattern Scan The output given by the menu Big Font is suitable for faxing 3 Press the Execute key Basic machine The copy mode is activated Specify copy settings and press the key The machine status lists is output GDI machine The machine status list is output 4 To return to the SP...

Page 200: ... exit sensor 213 Original caught at the original exit sensor 214 Original does not reach the original reverse sensor 215 Original caught at the original reverse sensor ADF APS Sensor Output Display SP 6901 Sensor Positions Large to Small W1 1 0 0 1 W2 0 0 1 1 Reading Data Paper Size W1 W2 L1 L2 NA EU AA 0 0 0 0 B5 LEF 0 0 1 1 11 x 17 B4 0 1 0 0 81 2 x 51 2 LEF A5 LEF 0 1 1 0 81 2 x 11 SEF A4 SEF 1...

Page 201: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 192 1 0 0 0 11 x 81 2 LEF A4 LEF 1 0 1 1 11 x 17 A3 1 1 0 0 51 2 X 81 2 SEF A5 SEF 1 1 1 0 B5 SEF 1 Detected ...

Page 202: ...e paper tray 1 2nd Mirror 2 Exposure Lamp 3 1st Mirror 4 Exposure Glass 5 Original Width Sensors 6 Original Length Sensors 7 Lens Block 8 SBU 9 Exit Sensor 10 Scanner Motor 21 Registration Roller 22 Registration Sensor 23 By pass Tray 24 Lower Transport Roller 25 Upper Relay Roller 26 Relay Sensor 27 Lower Relay Roller 28 Vertical Transport Sensor 29 Paper Feed Roller 30 Paper End Sensor ...

Page 203: ...ller 17 OPC Drum 18 Middle Transport Roller 19 Duplex Exit Sensor 20 Image Density Sensor 31 Bottom Plate 32 PCU 33 Development Roller 34 WTL 35 Polygon Mirror Motor 36 Laser Unit 37 Toner Supply Bottle Holder 38 Exit Roller 39 3rd Mirror 40 Scanner HP Sensor Paper Path The B269 B277 model has a duplex unit mounted on the right side of the machine All models have a by pass tray ...

Page 204: ...Service Manual 18 Jan 06 195 Drive Layout 1 Scanner Motor 2 Main Motor 3 Hot Roller 4 OPC Drum 5 Development Roller 6 Relay Clutch 7 Lower Paper Feed Clutch 8 By pass Feed Clutch 9 Upper Paper Feed Clutch 10 Registration Clutch ...

Page 205: ...245 B276 B277 B268 B269 Service Manual 18 Jan 06 196 Board Structure Block Diagram Only B269 B277 models contain the duplex unit The one bin tray is for models B268 B269 with the optional controller box ...

Page 206: ...ripherals Image processing video control Operation control system control Basic machine only Machine control Drive control for the sensors motors and clutches of the printer and scanner High voltage supply board control Serial interfaces with peripherals Fusing control SBU Sensor Board Unit The SBU deals with the analog signals from the CCD and converts them into digital signals ...

Page 207: ...n the memory At the time of printing the data is retrieved and sent to the laser diode 2 Drum Charge In the dark the charge roller gives a negative charge to the organic photo conductive OPC drum The charge remains on the surface of the drum because the OPC layer has a high electrical resistance in the dark 3 Laser Exposure The processed data scanned from the original is retrieved from the memory ...

Page 208: ...ce The output signal is used for charge roller voltage control 6 Image Transfer Paper is fed to the area between the drum surface and the transfer roller at the proper time for aligning the copy paper and the developed image on the drum surface Then the transfer roller applies a high positive charge to the reverse side of the paper This positive charge pulls the toner particles from the drum surfa...

Page 209: ...rge coupled device on the lens block via the 1st 2nd and 3rd mirrors and through the lens on the lens block The 1st scanner consists of the exposure lamp a reflector and the 1st mirror A lamp stabilizer energizes the exposure lamp The light reflected by the reflector is of almost equal intensity to reduce shadows on pasted originals An optics anti condensation heater is available as an option It c...

Page 210: ...er In reduction or enlargement mode the scanning speed depends on the magnification ratio The returning speed is always the same whether in full size or magnification mode The image length change in the sub scan direction is done by changing the scanner drive motor speed and in the main scan direction it is done by image processing on the BICU board Magnification in the sub scan direction can be a...

Page 211: ...tect the original width and the original length sensors B detect the original length These are the APS Auto Paper Select sensors Each APS sensor is a reflective photosensor While the main switch is on these sensors are active and the original size data is always sent to the CPU However the CPU checks the data only when the platen cover sensor C is activated This is when the platen is positioned ab...

Page 212: ...s of the sensors for each original size This original size detection method 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 at the default setting However if the by pass feeder is used note that the machine assumes that the copy paper is short edge...

Page 213: ...h the copy paper length detected by the registration sensor This means that copy time for the first page may be slower because of the longer time required for scanning but it will be normal for the rest of the job Original size detection using the ADF is described in the manual for the ADF ...

Page 214: ...l to the BICU board The BICU board can be divided into three image processing blocks the IPU Image Processing Unit FCI Fine Character Image and VCU Video Control Unit IPU Auto shading filtering magnification scanner gamma correction ID gamma correction VCU Printer gamma correction LD print timing control and laser power PWM control FCI inside the VCU Smoothing The IPU and VCU are contained in the ...

Page 215: ... processing circuit The analog processing circuit performs the following operations on the signals from the CCD 1 Z C Zero Clamp Adjusts the black level reference for even pixels to match the odd pixels 2 Signal Amplification The analog signal is amplified by operational amplifiers After the above processing the analog signals are converted to 8 bit signals by the A D converter Each pixel will be ...

Page 216: ...n 6 Filtering MTF and smoothing 7 ID gamma correction 8 Binary picture processing 9 Error diffusion 10 Dithering 11 Video path control 12 Test pattern generation The image data then goes to the VCU basic machine or to the GDI controller GDI machine The IPU and VCU are contained in the same IC called SCRATCH on the BICU Image Processing Modes The user can select Text Photo and Special original type...

Page 217: ...ed background Originals through which the rear side is extremely visible or have a colored background with faint text Also for originals with very grainy backgrounds some newspapers and faint text Colored text Originals with colored text and lines Normal Pixel Photo Photo images created by dither patterns dots visible such as newspaper photos normal resolution Coarse Pixel Photo Photo images creat...

Page 218: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 209 ...

Page 219: ...or Each Image Processing Step However only one of the original modes can be customized at any one time SP Modes for Each Image Processing Step The table on the next page shows which SP modes are used for each step of image processing 4921 Selects which original mode the settings from SP 4922 to SP 4932 will be applied to 4922 Selects the scanner curve You can select either a curve for text based o...

Page 220: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 211 ...

Page 221: ...e average of the white video level for each pixel is stored as the white shading data in the FIFO memory in the IPU SCRATCH chip The video signal information for each pixel obtained during image scanning is corrected by the IPU SCRATCH chip If the maximum value of the video level is 64 or less SC101 exposure lamp error is generated Auto shading is done before scanning for the first original as wel...

Page 222: ...round of an original from appearing on copies As the scanner scans down the page the IPU on the BICU detects the peak white level for each scan line The IPU determines the reference value for the A D conversion for a particular scan line using the peak white level for that scan line Then the IPU sends the reference value data to the reference controller on the SBU When an original with a gray back...

Page 223: ... cannot bring out gradations in darker areas i e differences in shades of dark colors are hard to distinguish When selecting Photo the machine uses scanner gamma correction One advantage of this is that the machine can bring out gradations in dark areas of photo image originals The disadvantage is that it in some cases images come out lighter than the customer desires Main Scan Magnification Chang...

Page 224: ...ring Overview There are several software filtering processes for enhancing the desired image qualities of the selected original mode There are three MTF filters a smoothing filter independent dot erase and line width correction Each can be used only when certain modes are selected details below and are automatically applied The strength levels for the MTF are controlled by SP 4932 The levels for l...

Page 225: ...ue set in SP 4932 The higher the setting the sharper the image However this is only used when the customer uses Text 1 Text 2 Photo 2 Special 1 Special 2 or Special 5 The default value is 0 for each mode However the actual strength of 0 differs from mode to mode Independent Dot Erase When the user selects Text 1 and 2 Photo 2 and Special 1 2 and 5 modes independent dots are detected using a matrix...

Page 226: ...sion matrix Error diffusion is applied when the user selects Text 1 Photo 1 3 and Special 2 and 5 As the final step in error diffusion a process called Texture Removal is applied to Text 1 Photo 2 Special 2 and Special 5 by default but can also be applied to Photo 1 and 3 by changing the value of SP 4926 Texture removal uses 256 threshold values in an 8 x 8 matrix The value of SP 4926 controls the...

Page 227: ... for certain pixels Fig A shows the four possible pulse durations and Fig B shows how the laser pulse can be in one of three positions within the pixel Fig C shows an example of how edge smoothing is used FCI smoothing is only effective when Text 2 or Special 1 is selected There is no SP adjustment for this Printer Gamma Correction Printer correction corrects the data output from the IPU to the la...

Page 228: ...oidal lens 4 Shield glass 5 OPC drum 6 1st mirror 7 2nd mirror 8 F theta lens 9 Polygon mirror 10 Cylindrical lens 11 Synchronization detector mirror The LD drive board controls both the laser output and laser synchronization mechanism The machine cuts off the power supply to the LD drive board if the front or right cover is opened ...

Page 229: ...ure the machine monitors the current passing through the laser diode LD The machine adjusts the current to the laser diode by comparing it with the reference level from the reference circuit This auto power control is done just after the machine is turned on and during printing The laser diode power is adjusted on the production line Do not touch the variable resistors on the LD unit in the field ...

Page 230: ...y switching on during servicing there are safety switches at the front and right covers When the front cover or the right cover is opened the power supply to the laser diode is interrupted The switches are installed on the 24V line coming from the power supply unit then the 5VLD is generated from the 24V supply after it goes through the interlock switches ...

Page 231: ...stration An organic photoconductor OPC drum diameter 30 mm is used in this machine 1 Cleaning Blade 2 Toner Collection Coil 3 Pick off Pawl 4 OPC Drum 5 ID Sensor see note 6 Development Roller 7 Development Unit 8 Charge Roller 9 Charge Roller Cleaning Brush 10 Quenching Lamp see note The ID sensor and quenching lamp are not included in the PCU ...

Page 232: ...Jan 06 223 Drive The main motor A drives the drum B through a series of gears and the drum drive shaft C The main motor assembly includes a drive controller which outputs a motor lock signal when the rotation speed is out of the specified range ...

Page 233: ... roller to charge the drum The drum charge roller A always contacts the surface of the drum B to give it a negative charge of 950 V The high voltage supply board gives a negative charge of 1700 V to the drum charge roller through the screw C and terminal plate D This voltage can be changed using SP 2001 1 ...

Page 234: ...l parameters are balanced so that any small change in drum potential caused by environmental effects is reflected in a change in the amount of toner transferred to the drum This measurement is made immediately after the ID sensor pattern for toner density control Immediately after making ID sensor pattern A the charge roller voltage stays the same but the development bias goes up to 600 V as a res...

Page 235: ...5 Make the drum charge voltage less negative smaller by 50 V Vsdp Vsg 0 90 Make the drum charge voltage more negative larger by 50 V ID Sensor Pattern Production Timing The ID sensor pattern is made at the following times Not made every page or every job During warm up at power on When the machine starts warming up from energy saver mode and the temperature is less than the target temperature as s...

Page 236: ... parts 1 Development roller 2 Mixing auger 2 3 TD sensor 4 Mixing auger 1 5 Doctor blade 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 on the copy ...

Page 237: ... is pushed in the development drive shaft engages the development roller gear The development drive gears except for the gears in the development unit are helical gears These gears are quieter than normal gears Developer Mixing The two mixing augers A B keep the developer evenly mixed Mixing auger 2 A transports excess developer scraped off the development roller C by the doctor blade D towards th...

Page 238: ...stem 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 950 V To attract negatively charged toner to the black areas of the latent image on the drum the high voltage supply board applies a bias of 650 volts to the development rollers throughout the image development process The bias is applied to the development ...

Page 239: ...tle is pulled away and kept in place by the chuck F The toner supply mechanism transports toner from the bottle to the development unit The toner bottle has a spiral groove G that helps move toner to the development unit To add a new toner bottle first lift the toner bottle holder When this is done the chuck releases the toner bottle cap into its proper position to prevent toner from scattering Th...

Page 240: ...e PCU is opened by the toner bottle holder Then the toner falls down into the development unit through the slit and the shutter Toner Density Control Overview There are four modes for controlling toner supply as shown in the following tables which can be changed with by SP 2921 The factory setting is sensor control 1 mode Basically the toner concentration in the developer is controlled using the s...

Page 241: ...e with the next toner density control Vts is used for the first toner density control after a new PCU has been installed until it has been corrected with the ID sensor output Vref is used after Vts has been corrected with the ID sensor output voltage corrected during the first toner density control for a new PCU Toner supply amount Varies Toner end detection Performed Sensor control 2 Mode Sensor ...

Page 242: ...upplied every printed page regardless of Vt Toner supply amount Fixed SP 2925 Toner end detection Not performed Toner Density Sensor Initial Setting The TD sensor initial setting SP 2214 Developer Initialize procedure must be done after replacing the developer During TD sensor initial 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...

Page 243: ...e temperature setting Toner Supply Reference Voltage Vref Determination The toner supply reference voltage Vref is used for toner supply determination see below Vref is determined using the following data ID sensor 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 beco...

Page 244: ...r end T 30 see note 3 7 Vt Vts or Vref S toner end T 30 see note 3 The value of t can be changed using SP 2922 default 0 4 second The value of T can be changed using SP 2923 default 30 seconds T 30 means that toner is supplied intermittently in a 1 3 duty cycle 1 s on 2 s off for 30 seconds Toner Supply in Abnormal Sensor Conditions ID Sensor Readings are abnormal if any of the following condition...

Page 245: ...es consecutively the machine enters the toner near end condition and the toner end indicator starts blinking Then the machine supplies toner for a certain time which depends on the setting of SP 2923 see the previous page Toner Near End Recovery If the machine detects Vt Vref or Vts 4S 5 twice consecutively in any of the following situations the machine clears the toner near end condition While in...

Page 246: ...ng on the main switch if the front cover is opened for 10 seconds or more and then closed while a Toner End condition exists following toner bottle replacement the machine clears the Toner End condition The recovery procedure is the same as for toner near end It takes about two minutes ...

Page 247: ...red to the paper This model uses a counter blade system The cleaning blade scrapes off toner remaining on the drum When toner builds up in the cleaning unit toner at the top of the pile is removed by the toner collection coil B To remove the toner and other particles that are accumulated at the edge of the cleaning blade the drum turns in reverse for about 5 mm at the end of every copy job ...

Page 248: ...ycling Toner picked up by the toner collection coil A is transported to the opening B in the side of the PCU Then this toner falls into the development unit with new toner coming from the toner bottle and it is all mixed together by mixing auger 1 C and used again ...

Page 249: ... tray is pulled out the paper feed roller and shaft do not separate from the tray when the tray is pulled out The two relay sensors are used for paper jam detection The lower one detects jams when paper is fed up from the optional paper feed unit The components of the paper feed station are as follows 1 Paper End Sensor 2 Paper Feed Roller 3 Registration Roller 4 Paper Size Switch 5 Upper Relay Ro...

Page 250: ...en the paper feed clutch turns on the feed roller starts to feed the paper The paper feed clutch stays on until shortly after the registration sensor has been activated Paper Feed and Separation Mechanism The paper feed roller A drives the top sheet of paper from the paper tray to the copier The friction pad B allows only one sheet to feed at a time The friction pad applies pressure to the feed ro...

Page 251: ...de comes off compressed springs lift the bottom plate Paper End Detection If there is any paper in the paper tray the paper stack lifts the feeler the paper end sensor A is deactivated When the paper tray runs out of paper the paper end feeler drops into the cutout B in the tray bottom plate and the paper end sensor is activated When the paper tray is drawn out with no paper in the tray the shape ...

Page 252: ...ate which is on the front right of the tray Each paper size has its own actuator with a unique combination of notches To determine which size has been installed the CPU reads which micro switches the actuator has switched off The CPU disables paper feed from a tray if the paper size cannot be detected If the paper size actuator is broken or if there is no tray installed the Add Paper indicator wil...

Page 253: ...erns on the rectangular part of the paper size switch The patterns for each paper width in the paper size switch are unique North America CN No BICU 11 x 17 81 2 x 14 51 2 x 81 2 CN136 1 ON OFF OFF OFF OFF OFF CN136 2 OFF OFF OFF ON OFF CN136 3 GND OFF OFF OFF OFF OFF CN136 4 OFF ON OFF OFF ON CN136 5 ON ON OFF OFF OFF Europe Asia CN No BICU A3 A4 SEF 8 x 13 A5 SEF CN136 1 ON OFF OFF OFF OFF CN136...

Page 254: ...fence can be secured with a screw for customers who do not want to change the paper size Paper Registration The drive from the main motor A is transmitted to the registration roller through the registration clutch gear B The registration sensor C is used for correcting paper skew and for detecting paper misfeeds The cleaning mylar D contacts the registration roller It removes paper dust from the r...

Page 255: ...ently occur after registration SP 1903 can be used to activate the relay clutch so that the relay roller assists the registration roller in feeding the paper along When feeding from the by pass tray the by pass feed clutch is activated turning the by pass feed roller This feature may be needed when feeding thick paper and cannot be used for the first paper feed tray ...

Page 256: ...of the drum B The high voltage supply board supplies a positive current to the transfer roller which attracts the toner from the drum onto the paper The current depends on the paper width paper type and paper feed tray The curvature of the drum and the discharge plate C help the paper to separate from the drum The discharge plate is grounded ...

Page 257: ...nt has been supplied to the roller high transfer current is applied to the roller to transfer the toner to the paper see the table below 3 After the trailing edge of the paper has passed through the roller transfer current turns off In multiple copy mode the transfer current shifts again to the low transfer current The high transfer current levels default are as shown in the following table With S...

Page 258: ...to the roller surface To prevent the toner from transferring to the back side of the printouts the transfer roller requires cleaning before the next printing run During transfer roller cleaning the high voltage supply unit supplies a negative cleaning voltage about 1 kV to the transfer roller Any negatively charged toner on the transfer roller is then transferred back to the drum Then a positive c...

Page 259: ...76 B277 B268 B269 Service Manual 18 Jan 06 250 Paper Separation Mechanism The discharge plate A and the drum curvature of the drum help the paper to separate away from the drum The discharge plate is grounded ...

Page 260: ...anual 18 Jan 06 251 Image Fusing and Paper Exit Overview 1 Paper exit roller 2 Exit sensor 3 Hot roller strippers 4 Pressure roller 5 Cleaning roller 6 Pressure spring 7 Fusing lamps 8 Thermistor 9 Thermostat 10 Hot roller 11 Thermostat ...

Page 261: ... the fusing unit drive gear J When you close the right door the mechanical link H pushes the spring G The gear holder turns counterclockwise by the force of another spring D and engages with the fusing unit drive gear Contact Release Control The drive power is not transmitted to the fusing unit during warming up when the fusing temperature at the start is 18 C or higher The drive power is transmit...

Page 262: ...sing unit drive gear When the solenoid is on it pulls the top end of the gear holder to the right and the gear holder turns clockwise As a result the drive gear is released from the fusing unit drive gear The release solenoid comes on when you turn on the main switch if the fusing temperature is 18C or higher The solenoid releases the drive gear from the fusing unit drive gear The fusing lamps hea...

Page 263: ...ore direct access to the gap between the hot roller and the pressure roller Pressure Roller The pressure springs A constantly apply pressure between the hot roller B and the pressure roller C Applied pressure can be changed by adjusting the position of the pressure springs The spring is positioned at the end D as the default setting Fusing Temperature Control Overview There are two fusing lamps no...

Page 264: ...on the fusing temperature rises from the room temperature t0 to one of the specified temperatures You can adjust some of the temperatures A1 Regular Start Mode A2 Cold Start Mode SP 1107 1 2 Turning the fusing lamp on and off may affect the voltage of the power source in the room causing the fluorescent lights in the room to flicker To lighten this problem you can reduce the checking repetition to...

Page 265: ...he Thick Paper Temperature while the thick paper travels from the registration sensor to the fusing unit Continues feeding paper and executes the print job if the fusing temperature is high enough b1 b2 Standby Mode When the copier is not making copies the fusing temperature is set to the Standby Temperature T2 SP 1105 3 4 You can adjust this temperature However if you have raised this temperature...

Page 266: ...ond the controller turns the fusing lamp off In a case like this SC543 or SC553 shows Second Feature If the fusing feature reaches 250C the controller cuts off the 24V line The fusing lamps are on the 24V line Third Feature Two thermostats are attached on each line of the two fusing lamps four thermostats in total One of the two thermostats cuts the power supply to the fusing lamp at 179C and the ...

Page 267: ...ng on the position of the junction gate If the user selects duplex mode the page is directed to the inverter tray then reversed through the duplex unit and back into the machine for printing the second side 1 Duplex Inverter Roller 2 Duplex Entrance Sensor 3 Upper Transport Roller 4 Middle Transport Roller 5 Duplex Exit Sensor 6 Lower Transport Roller 7 Junction Gate 8 Duplex Inverter Sensor ...

Page 268: ...Transport Roller Basic operation To increase the productivity of the duplex unit copies are printed as follows Larger than A4 Short edge LT Short edge The paper feed path can hold only one sheet of copy paper at a time Example 8 pages The number A in the illustration shows the order of pages The number B in the illustration shows the order of sheets of copy paper if black this indicates the second...

Page 269: ...Short edge LT Short edge The paper feed path can hold two sheets of copy paper Example 8 pages The number A in the illustration shows the order of pages The number B in the illustration shows the order of sheets of copy paper if black this indicates the second side ...

Page 270: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 261 ...

Page 271: ...ter When the paper trailing edge reaches the duplex inverter sensor C the inverter roller D reverses its rotation direction and the paper goes to the duplex unit The paper is then sent to the mainframe registration rollers to print the reverse side If there are two or more copies being made with A4 81 2 x 11 SEF or smaller the next sheet waits at the registration sensor for the current sheet to ex...

Page 272: ... has two energy saver modes the Low Power Mode and the Night Off Mode The table lists the status of several components For the fusing temperature see the section of Fusing Temperature Control Operation panel Engine Exhaust fan Operating Mode On On On Low Power Mode Off On Off Night Off Mode Off Off Off The Operating Mode here refers to all the modes and status other than the Low Power Mode and Nig...

Page 273: ...ote that the Auto Off Timer does not wait for the Energy Saver Timer Therefore if the user specifies a smaller value in the Energy Saver Timer the Auto Off Timer expires earlier than the Energy Saver Timer In a case like this the Low Power Mode is not activated Instead the engine controller starts the Night Off Mode when the Auto Off Timer expires Specified value Low Power Mode Night Off Mode Ener...

Page 274: ...w The machine has three energy saver modes the Low Power Mode the Transit Mode and the Night Off Mode The Transit Mode continues for about two seconds probably the user does not recognize this mode when it occurs The table lists the status of several components For the fusing temperature see the section of Fusing Temperature Control Operation panel Engine Exhaust fan Operating Mode On On On Low Po...

Page 275: ... the controller starts the default application program the program specified by the user System Settings General Features Function Priority The default application program starts when the System Auto Reset Timer expires System Settings Timer Settings System Auto Reset Timer For more information see s in the section of Energy Saver Modes of Basic Machines Recovery Any of the following operations br...

Page 276: ...Length 148 600 mm 5 83 23 62 Copy Paper Size NOTE Physically the by pass tray can handle the following size but this size is not recognized by the application software Width 305 mm Length 1 260 mm Copy Paper Weight Paper Tray 60 90 g m2 16 24 lb Bypass 52 162 g m2 14 43 lb Reproduction Ratios 3 enlargement and 4 reduction A4 A3 Version LT DLT Version Enlargement 200 141 122 155 129 121 Full Size 1...

Page 277: ...t above 66 dB A Noise Emission The above measurements were made in accordance with ISO 7779 Measurements were taken from the normal position of the operator Dimensions W x D x H B245 B276 B268 550 x 568 x 420 mm 21 7 x 22 4 x 16 5 B269 B277 587 x 568 x 558 mm 23 1 x 22 4 x 23 0 Measurement Conditions 1 With bypass feed table closed 2 Without the A R DF Weight B245 35 kg 78 lb B268 B276 44 kg 96 lb...

Page 278: ...t Conditions 1 From the ready state with the polygonal mirror motor operating 2 A4 LT copying 3 Not APS mode 4 100 size 5 Paper feed from the upper tray Copy Number Input Numeric keypad 1 to 99 increment decrement Manual Image Density 5 steps Automatic Reset Default is 60 seconds Can be set from 10 to 999 seconds with user tools Automatic Shut off Default is 1 minute Can be set from 1 to 240 minut...

Page 279: ...ray Paper tray unit 2 trays 1 bin tray B269 B277 only Tray heater B269 B277 only Optics anti condensation heater GDI controller board Toner Yield 9k copies A4 LEF 6 full black 1 to 2 copying normal text mode Copy Tray Capacity 250 sheets Memory Basic Model 16 MB BICU GDI Model 16 MB BICU 32 MB Controller GDI NIC Model 16 MB BICU 64 MB Controller Duplex Unit B269 B277 only Copy Paper Size Maximum A...

Page 280: ...182 mm O O X X A5 SEF 148 x 210 mm O O O X A5 LEF 210 x 148 mm O O Sa X B6 SEF 128 x 182 mm O O O O B6 LEF 182 x 128 mm O O O O 8K SEF 267 x 390 mm O O O O 16K SEF 195 x 267 mm O O O O 16K LEF 267 x 195 mm O O O O DLT SEF 11 x 17 X X O O SEF 11 x 15 O O O O LG SEF 81 2 x 14 X X O O LT SEF 81 2 x 11 X X A4 LT A4 LT LT LEF 11 x 81 2 X X A4 LT A4 LT HLT SEF 51 2 x 81 2 O X O O HLT LEF 81 2 x 51 2 S X...

Page 281: ...297 x 420 mm X X X O B4 SEF 257 x 364 mm X X O O A4 SEF 210 x 297 mm X X X O A4 LEF 297 x 210 mm X X X O B5 SEF 182 x 257 mm X X O O B5 LEF 257 x 182 mm X X O O A5 SEF 148 x 210 mm O X O X A5 LEF 210 x 148 mm S X S X B6 SEF 128 x 182 mm O O O O B6 LEF 182 x 128 mm O O O O 8K SEF 267 x 390 mm O O X X 16K SEF 195 x 267 mm O O X X 16K LEF 267 x 195 mm O O X X DLT SEF 11 x 17 O O O O SEF 11 x 15 O O O...

Page 282: ... b Change the settings of SP 4305 1 Adjust the positions of the APS sensors c Change the settings of SP 4305 1 Paper Feed and Exit Main Frame Duplex Main frame tray Paper Size W x L China Korea North America Europe Asia Taiwan Duplex A3 SEF 297 x 420 mm X M X X X A3 LEF 420 x 297 mm O O O O O B4 SEF 257 x 364 mm X M M M X B4 LEF 364 x 257 mm O O O O O A4 SEF 210 x 297 mm X M X X X A4 LEF 297 x 210...

Page 283: ... X HLT SEF 51 2 x 81 2 O O O O O HLT LEF 81 2 x 51 2 M M M M O Executive SEF 71 4 x 101 2 M M M M X Executive LEF 101 2 x 71 4 M M M M X F SEF 8 x 13 M M M M X F LEF 13 x 8 O O O O O Foolscap SEF 81 2 x 13 M X X X X Foolscap LEF 13 x 81 2 O O O O O Folio SEF 81 4 x 13 M M M M X Folio LEF 13 x 81 4 O O O O O 8K SEF 267 x 390 mm M M M M X 8K LEF 390 x 267 mm O O O O O 16K SEF 195 x 267 mm M M M M X ...

Page 284: ...68 B269 Service Manual 18 Jan 06 275 X Detected Main frame tray Processed Duplex O Not detected Main frame tray Not processed Duplex M Selected manually K Specified from the key pad Custom W 90 to 297 mm L 148 to 600 mm ...

Page 285: ...B245 B276 B277 B268 B269 Service Manual 18 Jan 06 276 Machine Configuration ...

Page 286: ...ier 2 tray with duplex B269 B277 C G Platen cover optional B406 B ADF optional B813 A ARDF optional B814 A Paper tray unit 1 tray optional B385 F Paper tray unit 2 trays optional B384 E Copier 1 bin tray optional B621 H GDI GDI controller optional B865 B866 I The GDI controller comes with a dedicated controller box and printer scanner panel ...

Page 287: ... g m2 10 34 lb Double sided mode 52 105 g m2 14 28 lb Table Capacity 50 sheets 80 g m2 70 kg Original Standard Position Center Separation FRR Original Transport Roller transport Original Feed Order From the top original Reproduction Range 50 to 200 Sub scan direction only Power Source 24 and 5 Vdc from the copier Power Consumption 50 W Dimensions W x D x H 550 x 470 x 130 mm Weight 10 kg 22 lbs AD...

Page 288: ...y Paper Tray Unit Paper Size A5 to A3 51 2 x 81 2 SEF to 11 x 17 Paper Weight 60 105 g m2 16 28 lb Tray Capacity 500 sheets 80 g m2 20 lb x 1 tray Paper Feed System Feed roller and friction pad Paper Height Detection 4 steps 100 70 30 Near end Power Source 24 Vdc and 5Vdc from the copier printer 120 Vac 120 V version from the copier printer when the optional tray heater is installed 220 240 Vac 23...

Page 289: ...20 240 Vac 230 V version from the copier printer when the optional tray heater is installed Max 30 W Copying printing 23 W Optional Tray Heater On Power Consumption Average 17 W Copying printing 15 W Optional Tray Heater On Weight 25 kg 55 lb Size W x D x H 550 mm x 520 mm x 271 mm One Bin Tray Paper Size Width 140 297 mm Length 140 432 mm Output Standard Position Center Paper Weight 60 105 g m 16...

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Ricoh K-C3, Service Manual

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