Ricoh AC205 Service Manual Download Page 108

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PRINTING QUALITY PROBLEMS

B273 4-22

4.5.5 LIGHT IMAGE

Description:

Printed image is too light (no “ghosting”).

Cause Solution

1. Toner save mode is enabled.

2. Developer roller is contaminated or the

toner cartridge is almost empty.

3. Ambient temperature is below 10 C.

4. Bad contact due to dirty terminals on the

toner cartridge set.

5. Abnormal output from the HVPS.

1. Turn the toner save more off.

2. Replace the toner cartridge.

3. Turn the machine off. Wait 30 minutes

and turn the machine on again. Attempt to
print.

4. Clean dirt from the toner cartridge and

cartridge set contacts.

5. Replace the HVPS.

4.5.6 DARK/BLACK IMAGE

Description:

Printed image is dark/black.

Cause Solution

1. No charge voltage from the engine board.

2. Charge voltage fault due to bad contact

between toner cartridge and cartridge set.

3. VD0 signal from main PBA is low.

1. Check the connector that connects the

HVPS and the engine board.

2. Clean the high-voltage charge terminals.

Replace the HVPS if the problem
persists.

3. Replace the LSU or main PBA.

Digital Printer
Digital Printer
Digital Printer
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B273T917.WMF

Digital Printer
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Digital Printer

B273T919.WMF

Summary of Contents for AC205

Page 1: ...B273 SERVICE MANUAL 002544MIU ...

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Page 3: ...B273 SERVICE MANUAL ...

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Page 5: ...B273 SERVICE MANUAL 002544MIU ...

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Page 7: ...ERMISSION OF RICOH CORPORATION All product names domain names or product illustrations including desktop images used in this document are trademarks registered trademarks or the property of their respective companies They are used throughout this book in an informational or editorial fashion only and for the benefit of such companies No such use or the use of any trade name or web site is intended...

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Page 9: ...ation Users of this manual should be either service trained or certified by successfully completing a Ricoh Technical Training Program Untrained and uncertified users utilizing information contained in this service manual to repair or modify Ricoh equipment risk personal injury damage to property or loss of warranty protection Ricoh Corporation WARNING ...

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Page 11: ...LEGEND PRODUCT CODE COMPANY GESTETNER LANIER RICOH SAVIN B273 DSm520pf AC122 AC205 AC205 DOCUMENTATION HISTORY REV NO DATE COMMENTS 09 2005 Original Printing ...

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Page 13: ...ft Cover 3 4 3 2 3 FRONT COVER 3 5 3 3 SCANNER ASSEMBLY 3 6 3 3 1 REASSEMBLING THE SCANNER ASSEMBLY 3 14 3 4 ADF MOTOR ASSEMBLY 3 15 3 5 OPERATION PANEL 3 18 3 6 MIDDLE COVER AND EXIT ROLLER 3 20 3 7 CONTROLLER SHIELD ASSEMBLY 3 22 3 8 ENGINE SHIELD ASSEMBLY AND EXIT BOARD 3 24 3 8 1 ENGINE SHIELD 3 24 3 8 2 EXIT BOARD 3 26 3 9 SMPS AND LIU 3 27 3 10 FUSING UNIT 3 29 3 10 1 FUSING UNIT ASSEMBLY 3 ...

Page 14: ...Toner Cartridge 4 5 Jam2 Paper Exit Area By pass Jam By pass Tray 4 5 4 2 1 CLEARING DOCUMENT JAMS ADF 4 6 ADF Input Misfeed 4 6 ADF Exit Misfeed 4 7 ADF Roller Misfeed 4 7 4 2 2 JAM0 PAPER FEED AREA 4 8 4 2 3 JAM1 FUSING AREA OR AROUND THE TONER CARTRIDGE AREA 4 9 4 2 4 JAM2 PAPER EXIT AREA 4 10 4 2 5 BY PASS TRAY JAM 4 11 4 3 PAPER FEED PROBLEMS 4 12 4 3 1 INCORRECT PRINT POSITION 4 12 4 3 2 JAM...

Page 15: ...6 1 NO DIAL TONE 4 28 4 6 2 DEFECTIVE MF DIAL 4 28 4 6 3 DEFECTIVE FAX FORWARD RECEIVE 4 29 4 6 4 DEFECTIVE FAX FORWARD 4 29 4 6 5 DEFECTIVE FAX RECEIVE 1 4 29 4 6 6 DEFECTIVE FAX RECEIVE 2 4 30 4 6 7 DEFECTIVE FAX RECEIVE 3 4 30 4 6 8 DEFECTIVE FAX RECEIVE 4 4 30 4 6 9 DEFECTIVE AUTOMATIC RECEIVING 4 30 4 7 COPY PROBLEMS 4 31 4 7 1 WHITE COPY 4 31 4 7 2 BLACK COPY 4 31 4 7 3 UNUSUAL NOISE 4 31 4 ...

Page 16: ... Mode 5 2 Modem Speed 5 2 Error Rate 5 2 Notify Toner 5 2 CLEAR ALL MEMORY 5 3 Flash Upgrade 5 3 Silence Time 5 3 5 1 3 MACHINE TESTS 5 4 Switch Test 5 4 Modem Test 5 4 DRAM Test 5 4 ROM Test 5 4 Pattern Test 5 4 Shading Test 5 5 5 1 4 REPORTS 5 5 Protocol List 5 5 System Data 5 5 5 2 USER MODE 5 6 5 3 FIRMWARE DOWNLOAD 5 8 5 3 1 DOWNLOAD PROCEDURE 5 8 Printer Setting Utility Mode 5 8 Web Image Mo...

Page 17: ...DGE 6 6 6 2 8 NEW AIO DETECTION 6 7 6 2 9 TONER END DETECTION 6 7 6 3 CONTROLLER 6 8 6 3 1 MAIN PBA 6 8 6 3 2 ASIC 6 9 Main Function Block 6 9 6 3 3 MEMORY 6 9 6 3 4 FLASH MEMORY 6 9 6 3 5 SDRAM 6 9 6 3 6 BATTERY BACKUP 6 9 6 3 7 SENSOR INPUT CIRCUIT 6 10 Paper Empty Sensor 6 10 By pass Tray Sensor 6 10 Paper Feed Sensor 6 10 Paper Exit Sensor 6 10 Cover Open Sensor 6 10 DC Fan Solenoid Driving 6 ...

Page 18: ...7 Jam2 exit area 6 17 6 5 2 DRIVE 6 18 6 5 3 TRANSFER 6 18 6 5 4 FUSING 6 18 6 5 5 LASER SCANNING UNIT 6 19 6 6 OPERATION PANEL OPE 6 19 6 7 USB HOST 6 20 6 8 FAX SECTION 6 20 6 8 1 MODEM 6 20 6 8 2 LIU PBA 6 20 SPECIFICATIONS SPECIFICATIONS 7 1 1 GENERAL SPECIFICATIONS 7 1 2 PHYSICAL SPECIFICATIONS 7 2 3 PRINT SPECIFICATIONS 7 2 4 SCAN SPECIFICATIONS 7 3 5 COPY SPECIFICATIONS 7 4 6 TELEPHONE SPEC...

Page 19: ... Safety Statement This machine is certified in the U S to conform to the requirements of DHHS 21 CFR chapter 1 Subchapter J for Class 1 1 laser products and elsewhere It is certified as a Class I laser product conforming to the requirements of IEC 825 Class I laser products are not considered to be hazardous The laser system and printer are designed to prevent access to laser radiation during norm...

Page 20: ...verheating of the cables inside the wall and could lead to a fire 4 Do not allow water or other liquids to spill into the machine This can cause electric shock Do not let paper clips pins or other foreign objects fall into the machine These could cause a short circuit leading to an electric shock or fire hazard If foreign objects fall into the machine power off the machine and disconnect the power...

Page 21: ...nditions could lead to a fire 13 Do not insert metal objects into the machine through the ventilator fan or other part of the casing This could create contact with a high voltage conductor inside the machine and cause an electric shock HANDLING PRECAUTIONS The following instructions are for your own personal safety to avoid injury and to prevent damage to the machine 1 Ensure that the machine is i...

Page 22: ...ent and or temperature rating are correct 5 When removing or re fitting any parts do not use excessive force especially when fitting screws into plastic 6 Take care not to drop any small parts into the machine 7 Handling of the OPC Drum The OPC Drum can be damaged if it is exposed to light Take care not to expose the OPC Drum to direct sunlight fluorescent or incandescent lighting Exposure for as ...

Page 23: ...ildup in the vicinity of the assembly 3 Use only a grounded tip soldering iron to solder or desolder ESDs 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ESDs 5 Do not use Freon propelled chemicals When sprayed these can generate electrical charges sufficient to damage ESDs 6 Do not remov...

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Page 25: ...NCE REPLACEMENT AND ADJUSTMENT TROUBLESHOOTING SERVICE PROGRAM MODE DETAILED DESCRIPTIONS SPECIFICATIONS APPENDIX TAB POSITION 2 TAB POSITION 1 TAB POSITION 3 TAB POSITION 4 TAB POSITION 6 TAB POSITION 5 TAB POSITION 8 TAB POSITION 7 ...

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Page 27: ...INSTALLATION ...

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Page 29: ...INSTALLATION SM 1 1 B273 Installation 1 INSTALLATION Refer to the Operating Instructions for Installation procedures ...

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Page 31: ...PREVENTIVE MAINTENANCE ...

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Page 33: ...rdingly NOTE The intervals shown below are for reference only It is expected that the intervals indicated below will exceed machine life However if the indicated interval is reached replace the component Component Replacement Cycle Performed by ADF Rubber Pad 20 000 Pages Service Scanner ADF Pick up Ass y 80 000 Pages Service Pick up Ass y 150 000 pages Service Transfer Roller 60 000 Pages Service...

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Page 35: ...REPLACEMENT AND ADJUSTMENT ...

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Page 37: ...you service the machine 2 Remove the toner cartridge before you disassemble parts 3 Unplug the power cord before you service the machine 4 Use a flat clean surface to service the machine 5 Use only approved replacement parts Machine function cannot be guaranteed if unauthorized replacement parts are used 6 Do not force plastic components 7 Ensure that all components are in their correct positions ...

Page 38: ... 3 2 1 REAR COVER 1 Remove 4 x securing the rear cover A Remove the rear cover from the frame assembly 2 Unhook the face cover B from the rear cover as shown above Lift the face cover out B273R903 WMF B273R902 WMF B273R904 WMF A B ...

Page 39: ...move the paper tray unit before removing the side covers Right Cover 1 Open the front cover and remove 2 x on the front and 1 x on the back 2 Release 3 x clips A underneath the cover 3 Ease the rear screw bracket over its location pin and gently slide the right cover B to the right 4 Remove the right cover from the frame B273R905 WMF A B ...

Page 40: ... 4 SM Left Cover 1 Release 3 x clips A underneath the cover 2 Ease the rear screw bracket over its location pin and gently slide the left cover B to the right 3 Remove the left cover from the frame B273R906 WMF A B ...

Page 41: ...ement Adjustment 3 2 3 FRONT COVER 1 Open the front cover A and remove the toner cartridge B 2 Unhook the front cover A from the frame assembly Remove the front cover as shown above B273R907 WMF B273R908 WMF B273R909 WMF A B A ...

Page 42: ...R ASSEMBLY Remove the following before removing the ADF motor assembly Rear cover 3 2 1 Side covers 3 2 2 1 Remove 2 x from the scanner assembly as shown 2 Remove 5 x A as shown 3 Remove the ground wire screw B B273R910 WMF B273R911 WMF A B ...

Page 43: ...SCANNER ASSEMBLY SM 3 7 B273 Replacement Adjustment 4 Lift up the scanner assembly as shown above 5 Lift and remove the platen cover D as shown B273R912 WMF 3 1 2 B273R913 WMF C D ...

Page 44: ...ble harness E from the clips F underneath the scanner Remove it from the frame 7 Lift the front part of the OPE front cover G to release it from the hooks connecting it to the scanning assembly Remove the OPE front cover B273R914 WMF B273R915 WMF E F G ...

Page 45: ...e the OPE as shown NOTE Ensure that the harness is threaded through the frame 9 Remove 4 x securing the upper part J of the scanning unit 10 Unclip 2 x clip securing the upper part of the scanning unit from the scanner assembly Lift the upper part of the scanning unit upward and remove it B273R916 WMF B273R917 WMF H I J ...

Page 46: ...SCANNER ASSEMBLY B273 3 10 SM 11 Remove the CCD cable K as shown above 12 Pull up the CCD shaft L and remove the scanner module M B273R918 WMF B273R919 WMF K L M ...

Page 47: ...ustment 13 Squeeze the spring N to relieve tension on the belt O Lift the belt away from the pulleys as shown 14 Remove the reduction gear P and idle gear Q as shown 15 Remove 3 x and remove the motor bracket R B273R920 WMF B273R921 WMF N O P Q R ...

Page 48: ...SCANNER ASSEMBLY B273 3 12 SM 16 Unplug the connector from the open sensor assembly S O pen Sensor B273R980 WMF 17 Unlatch the cover open sensor T and remove it B273R922 WMF S T ...

Page 49: ...SCANNER ASSEMBLY SM 3 13 B273 Replacement Adjustment 18 Remove the CCD lock U Unlock Lock B273R923 WMF U ...

Page 50: ...3 14 SM 3 3 1 REASSEMBLING THE SCANNER ASSEMBLY Ensure that the tension spring A is as close to the right hand side of the scanner assembly as possible when reassembling the scanner module belt and belt spring B273R924 WMF A ...

Page 51: ...rs 3 2 2 Scanner assembly 3 3 1 Unclip the harness A from the platen cover 2 Remove the 2 x securing the ADF assembly and remove it Ensure that the harness is threaded through the frames 3 Remove the cover C as shown NOTE Ensure that the rubber rollers do not become contaminated with grease while disassembling the ADF motor assembly B273R925 WMF B273R926 WMF A B C ...

Page 52: ...he pick up assembly E 6 Remove the 2 x securing the upper cover F and remove the upper cover as shown above NOTE Note the position of the ferrite core and motor harness routing before removing the ADF motor assembly Return these to their original positions when reassembling the ADF assembly B273R927 WMF B273R928 WMF D E F ...

Page 53: ... is not necessary to disassemble the ADF unit if replacing only the separator pad In these cases perform the following 1 Open the ADF cover and remove the pick up assembly 2 Using a pair of tweezers or a small flat bladed screwdriver release the clips on both sides of the ADF separator pad assembly 3 Remove the ADF separator pad assembly from the machine B273R929 WMF G H I ...

Page 54: ...oving the operation panel Rear cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 1 Remove 10 x securing the operation board panel cover A from the operation board panel assembly B 2 Remove the contact rubber C from the operation board panel cover A B273R930 WMF B273R931 WMF A B C ...

Page 55: ...OPERATION PANEL SM 3 19 B273 Replacement Adjustment 3 Remove the keypad D from the operation panel board cover B273R932 WMF D ...

Page 56: ... Side covers 3 2 2 Scanner assembly 3 3 1 Remove 4 x securing the middle cover A Remove the middle cover 2 Remove 2 x securing the controller shield assembly B to the middle cover 3 Unhook the middle cover A from the frame assembly as shown above 4 Use caution when removing the shield assembly locating pegs Lift the top cover out B273R933 WMF B273R934 WMF A B A ...

Page 57: ...MIDDLE COVER AND EXIT ROLLER SM 3 21 B273 Replacement Adjustment 5 Remove the exit gear C exit roller D and 4 x bushings E as shown above B273R935 WMF C D E ...

Page 58: ...control shield assembly Rear cover 3 2 1 Side covers 3 2 2 1 Remove all connectors and 5 x securing the controller shield assembly A to the middle cover and the frame Remove the assembly 2 Remove 2 x connecting the NIC card B to the controller board assembly 3 Remove the NIC card B B273R936 WMF B273R937 WMF A B A ...

Page 59: ...CONTROLLER SHIELD ASSEMBLY SM 3 23 B273 Replacement Adjustment 4 Remove the 5 x to remove the bracket C from the main board D B273R938 WMF C D ...

Page 60: ...ve the following before removing the engine shield and exit board Rear cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 3 8 1 ENGINE SHIELD 1 Unplug the following connectors A Exit connector B Main connector C AC connector D Fan connector not shown LIU connector if connected B273R939 WMF A B C D ...

Page 61: ...LD ASSEMBLY AND EXIT BOARD SM 3 25 B273 Replacement Adjustment 2 Remove the 11 x securing the engine shield assembly A Tilt the assembly to one side Unplug all harnesses before removing the assembly B273R940 WMF A ...

Page 62: ...ENGINE SHIELD ASSEMBLY AND EXIT BOARD B273 3 26 SM 3 8 2 EXIT BOARD 1 Remove the 2 x exit board B 2 Remove the board B273R941 WMF B ...

Page 63: ...llowing before removing the SMPS and LIU Rear cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 Engine shield assembly 3 8 1 Remove the 2 x securing the inlet bracket A and remove the bracket 2 Remove the 1 x securing the engine shield ground wire B B273R942 WMF B273R943 WMF A B ...

Page 64: ...LIU B273 3 28 SM 3 Remove the 3 x securing the SMPS C Lift the SMPS out as shown above 4 Remove the 3 x securing the LIU Lift the LIU D out as shown in the illustration on the right B273R944 WMF B273R945 WMF C D ...

Page 65: ... Rear cover 3 2 1 3 10 1 FUSING UNIT ASSEMBLY NOTE Perform procedure 3 10 1 only if removal of entire fusing unit assembly is required Otherwise use individual component procedures 1 Unplug the 2 x from the main PBA and SMPS 2 Remove the 4 x securing the fusing assembly A and remove the fusing assembly B273R946 WMF A ...

Page 66: ...lts A securing the thermostat B 2 Lift the thermostat B out Ensure that bolts and nuts C are stored in a safe place 3 10 3 FUSING LAMP 1 Remove the 2 x securing the fusing lamp A 2 Remove the fusing lamp A from the hot roller B B273R947 WMF B273R948 WMF A B C A B ...

Page 67: ...B273 Replacement Adjustment 3 10 4 STRIPPER PAWLS 1 Remove the 4 x securing the fusing unit cover A 2 Remove the 2 x securing the guide input B 3 Remove the stripper pawls C from the fusing unit cover A B273R949 WMF A B C ...

Page 68: ...out of the left and right side stripper pawl holder slots shown in white circles below 2 Place the top part of the fusing unit onto the bottom part of the fusing unit 3 Place the four stripper pawls A back into the stripper pawl holder slots shown with two white arrows in the illustration below 4 Push the sides of the stripper pawls securely into the stripper pawl holder slots 5 Reassemble the res...

Page 69: ...stration below shows the stripper pawls in the incorrect position Note that the stripper pawls are not correctly set into the stripper pawl holder slots Do not place the fusing unit back into the machine with the stripper pawls in the wrong position B273R952 TIF ...

Page 70: ...FUSING UNIT B273 3 34 SM 3 10 5 THERMISTOR 1 Unwrap the thermistor harness A as shown above 2 Remove 1 x securing the thermistor B and remove the thermistor B273R950 WMF B273R951 WMF A B ...

Page 71: ...73 Replacement Adjustment 3 11 FAN Remove the following before removing the fan Rear cover 3 2 1 Side covers 3 2 2 1 Unplug the 1 x A from the SMPS 2 Remove the 1 x securing fan B 3 Remove the fan B B273R952 WMF A B ...

Page 72: ... Rear cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 Front cover 3 2 3 Middle cover 3 6 1 Remove the 4 x securing the LSU A and remove the LSU 2 Ensure that the wire B is kept in a safe place 3 Unplug the 2 x as shown in the illustration B273R953 WMF B273R954 WMF A B ...

Page 73: ...owing before removing the CRUM board Rear cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 Front cover 3 2 3 Middle cover 3 6 LSU 3 12 1 Remove the 4 x to separate the CRUM board A from the mainframe as shown above Ensure that the springs are kept in a safe place B273R956 WMF A ...

Page 74: ... the drive assembly B 3 Unplug the 1 x C from the motor PBA NOTE The six screws have numbers stamped on the drive assembly base plate Tighten the screws in the order shown on the plate when reassembling the drive assembly It is necessary to consider only screws one to five at the time of drive assembly replacement Screw number six is tightened when the controller shield assembly is replaced B273R9...

Page 75: ...ollowing before removing cover mid front Rear cover 3 2 1 Side covers 3 2 2 Middle cover 3 6 1 Remove the 4 x securing the cover mid front A 2 Release the 2 clips B in the center 3 Remove the cover mid front A NOTE The cover is very fragile Use caution when removing it B273R958 WMF A B ...

Page 76: ... cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 Front cover 3 2 3 Middle cover 3 6 LSU 3 12 Cover Mid Front 3 15 1 Remove the 3 x securing the transfer ground A and remove the ground 2 Unplug the Pre Transfer Lamp PTL holder connector B and remove the PTL C 3 Remove the PTL lens D B273R959 WMF B273R960 WMF A B C D ...

Page 77: ...3 Replacement Adjustment 4 Remove the transfer roller E by pressing the hook F securing the roller to the right 5 Unlatch the bushing G and remove it 6 Lift the transfer roller H out as shown above B273R961 WMF B273R962 WMF E F H G ...

Page 78: ...bly 3 3 Front cover 3 2 3 Middle cover 3 6 Controller shield assembly 3 7 Drive assembly 3 14 1 Remove the 4 x securing the guide paper front and remove the guide paper 2 Remove the 2 x on both sides of the guide paper to remove the two guides B 3 Remove the two guides and the two springs as shown in the illustration B273R963 WMF B273R964 WMF A B B ...

Page 79: ...FEED ASSEMBLY SM 3 43 B273 Replacement Adjustment 4 Remove the 3 x securing the feed bracket C and remove the bracket 5 Remove feed gear 2 D B273R965 WMF B273R967 WMF C D ...

Page 80: ...FEED ASSEMBLY B273 3 44 SM 6 Remove feed gear 1 E 7 Remove the feed roller F 8 Remove feed roller 1 G as shown above B273R966 WMF B273R968 WMF E F G ...

Page 81: ...ly and solenoid Rear cover 3 2 1 Side covers 3 2 2 Scanner assembly 3 3 Front cover 3 2 3 Middle cover 3 6 Controller shield assembly 3 7 Drive assembly 3 14 Engine shield assembly 3 8 Feed assembly 3 17 3 18 1 PICK UP ASSEMBLY 1 Remove the pick up gear assembly A 2 Remove the pick up assembly as shown in the illustration B273R969 WMF 1 2 B273R970 WMF A B ...

Page 82: ... up solenoid C and remove the solenoid 4 Remove the 1 x securing the manual solenoid D and remove the solenoid 5 To replace the pick up roller move the stopper E securing the sponge roller F top the right Turn the sponge roller and remove it from the shaft G B273R971 WMF B273R972 WMF C D E F G ...

Page 83: ... is necessary to replace the by pass pick up roller or the paper feed unit pick up roller By pass pick up roller 1 Release the white catch and the slide locking piece as far to the side as possible 2 Slide the white collar A as far to the side as possible 3 Slide the by pass pick up roller B as far as possible to the side until it is free from the white collar 4 Rotate the pick up roller around th...

Page 84: ...Release the white catch C Slide the locking piece as far to the side as possible 3 Slide the white collar D as far to the side as possible 4 Slide the pick up roller E to the side until it releases from the white collar 5 Rotate the pick up roller around the drive until it can be removed B273R974 WMF E D C E ...

Page 85: ...TROUBLESHOOTING ...

Page 86: ......

Page 87: ...PER PATH The diagram below shows the paper path for the scanner and the engine of the machine Refer to the next two pages for more details A Scanner B Engine 30She ets Engine Part PTL PR CR DR SR TR FR OPC L S U Fuser Toner Cartridge 1 2 3 4 5 6 8 7 B273T04 WMF A B ...

Page 88: ...B273 4 2 SM 4 1 1 COPY SCAN DOCUMENT PATH Scanner 1 Paper 5 Registration sensor 2 Pick up roller 6 Scanning sensor 3 ADF roller 7 Feed roller 4 Document sensor 8 Exit roller White Sheet 1 2 3 4 8 5 6 7 B273T05 WMF ...

Page 89: ...shooting Engine 1 Paper feed unit 5 Paper empty sensor paper feed unit 2 By pass tray 6 Paper feed sensor 3 Paper output area face down 7 Paper exit sensor 4 Paper empty sensor by pass Engine Part PTL L S U 1 2 3 4 5 6 7 B273T06 WMF ...

Page 90: ...e paper being fed passes the paper feed sensor 1 Jam 0 occurs if the sensor is not actuated within a certain time 2 Jam 1 also occurs if the sensor is not actuated within a certain time 3 Jam 2 occurs if the trailing edge of the paper does not pass the exit sensor within a certain time after the leading edge of the paper activates the exit sensor ...

Page 91: ...he LCD if a paper jam occurs Find and remove the jammed paper If you don t see the paper open the covers Do not use a tweezers pincers or other metal tools to clear paper jams This could damage the internal mechanisms Jam0 Paper Feed Area Jam1 Fusing Toner Cartridge Jam2 Paper Exit Area By pass Jam By pass Tray P T L EXIT Sensor F e e d S e n s o r M PS e n s o r B273T08 WMF P T L F e e d S e n s ...

Page 92: ... ADF ADF Input Misfeed Perform the following to remove a jam of this type 1 Open the top cover A 2 Pull the document gently to the right and out of the ADF 3 Close the top cover and load the documents to the ADF again NOTE To prevent document jams use the platen glass instead of the ADF for the thick thin or mixed documents B273T11 WMF B273T12 WMF A ...

Page 93: ...uments from the exit area 2 Close the document cover Load the documents to the ADF again ADF Roller Misfeed Perform the following to remove a jam of this type 1 Open the document cover A 2 Turn the release knob C to release the document B 3 With both hands carefully pull the document D to the right 4 Close the document cover Load the documents into the ADF again B273T13 WMF B273T14 WMF A B C D ...

Page 94: ...if the paper does not exit 2 Pull the paper tray A open 3 Remove the jammed paper by gently pulling it straight out 4 Push the paper tray back to the machine until it snaps into place 5 Open and close the front cover to resume printing again NOTE If there is any resistance and the paper does not move when you pull or if you cannot see the paper in this area proceed to the fuser area around the ton...

Page 95: ...emove a jam of this type NOTE The fusing area is hot Use caution when removing paper from this area of the machine 1 Open the front cover and remove the toner cartridge 2 Remove the jammed paper by gently pulling it straight out 3 Replace the toner cartridge and close the front cover Printing should resume automatically B273T17 WMF A ...

Page 96: ... machine Proceed to step two if the paper does not exit from the machine 2 Gently pull the paper out of the front output tray 3 Open the face up door A if there is resistance on the paper when you try to pull it out of the front output tray 4 Remove the paper B by gently pulling it straight out 5 Close the rear cover 6 Open the close the front cover to resume printing B273T19 WMF A B ...

Page 97: ...e display when printing via the by pass tray and the machine does not detect paper This occurs due to no paper or improper paper loading This error message may also occur when the paper is not properly fed into the machine through the manual feeder In this situation pull the paper out of the machine ...

Page 98: ...up plate and springs are misaligned or defective 3 Paper separator pad is dirty or defective 4 Pick up roller may be contaminated or not installed correctly 5 The area between the pick up roller and registration sensor may be contaminated 6 Feed sensor may be defective Check in Tech Mode 1 Replace the solenoid 2 Repair replace as required 3 Clean with a soft cloth dampened with isopropyl alcohol o...

Page 99: ... actuator feed Cause Solution 1 Jam 2 can appear even if the paper is completely fed out of the printer The exit sensor may be defective This sensor should return to its original position to close the photosensor It may remain open due to debris 2 Paper remains rolled around the hot roller The guide claw could be broken or damaged 1 Check if the exit sensor or actuator exit is damaged Check if bur...

Page 100: ...ds or PBA 3 Clean the friction pad with a soft cloth dampened with isopropyl alcohol or water 4 Use paper with a smoother surface 4 3 6 PAPER IN THE FUSING UNIT Description Paper becomes rolled around the rollers in the fusing unit Cause Solution 1 Pressure roller or hot roller may be contaminated 2 Ribs claws or springs may be damaged or deformed 1 Clean the roller surfaces and area between the h...

Page 101: ...per from the OPC 1 Remove the toner cartridge from the machine do not touch the green surface of the OPC Drum with bare hands 2 Rotate the gear wheel and remove the paper from the cassette 3 Clean all fingerprints from the OPC Drum with a soft tissue Do not scratch the drum surface 4 3 8 DEFECTIVE ADF Description ADF does not operate correctly Cause Solution 1 ADF roller or holder may be damaged 2...

Page 102: ...t solve the problem 4 4 2 DEFECTIVE CONTROL PANEL Description Operation panel does not operate when keys are pressed Cause Solution 1 The memory needs to be cleared 2 No sounds are heard when the keys are pressed 1 Ensure that the keypad is correctly assembled Replace the keypad if necessary 2 Replace the operation panel and main board 4 4 3 FUSING GEAR MELTS OVERHEATS Description Paper constantly...

Page 103: ...re is no paper loaded in the cassette Cause Solution 1 Paper sensor or paper sensor actuator is damaged 2 SMPS or main PBA are defective 1 Replace the defective sensor or actuator 2 Replace the SMPS or main board 4 4 6 COVER OPEN 1 Description Cover Open message appears on the LCD when the front cover is closed Cause Solution 1 Open Cover microswitch is stuck or damaged 2 Front cover tab is damage...

Page 104: ...oes not operate and paper is not fed into the machine In this condition Jam 0 appears Cause Solution Main motor harness or motor PCB are faulty Check the motor harness and connectors Replace if necessary Replace the main PBA if the problem stays Use EDC mode to check motor operation 4 4 9 NO POWER Description LCD panel does not come on when the machine power is turned on Cause Solution 1 Power inp...

Page 105: ...L LINES BEND Description Vertical lines are curved on output prints Cause Solution 24 V power supply to the LSU is faulty 1 Replace the LSU if the 24 V power supply is stable 2 Replace the SMPS if the 24 V power supply is unstable Replace the main PBA if the problem persists ...

Page 106: ...es inside the toner cartridge or toner supply is low 3 Particles contamination or burrs on the edge of the toner cartridge window 4 Fusing unit is defective if blank areas periodically appear on the top of black images 5 OPC drum is contaminated 6 Depression or deformation on the surface of the transfer roller 1 Clean the LSU window with isopropyl alcohol Replace the LSU if there are particles ins...

Page 107: ...an the transfer roller gear Replace the transfer roller if the problem persists 4 5 4 BLACK WHITE SPOTS Description Dark white or blurry spots appear periodically throughout the output print Cause Solution 1 Developer is coated with paper dust or other matter 2 The OPC drum surface is damaged 3 Transfer roller has reached end of life 1 Print several OPC cleaning mode prints Run the self test 2 3 t...

Page 108: ... to print 4 Clean dirt from the toner cartridge and cartridge set contacts 5 Replace the HVPS 4 5 6 DARK BLACK IMAGE Description Printed image is dark black Cause Solution 1 No charge voltage from the engine board 2 Charge voltage fault due to bad contact between toner cartridge and cartridge set 3 VD0 signal from main PBA is low 1 Check the connector that connects the HVPS and the engine board 2 ...

Page 109: ...hroughout the output print Cause Solution 1 The machine has not printed large quantities of low coverage pages or the machine has not been used for an extended period 2 A recycled toner cartridge is being used 3 The toner cartridge has reached end of life 4 The up down movement of the transfer roller is not smooth 5 HVPS is not performing within specification 1 The toner cartridge is designed to p...

Page 110: ...ll HV contacts Replace the HVPS if the problem persists 2 Clean all HV contacts Replace the HVPS if the problem persists 3 Replace the toner cartridge 4 Replace the transfer roller 5 Turn the machine off Wait 30 minutes and turn the machine on again Attempt to print 6 Replace the toner cartridge 4 5 10 GHOST 2 Description Image Ghosting appears on the output prints at 75 mm intervals Cause Solutio...

Page 111: ...lers 4 5 12 GHOST 4 Description White or pale ghosting appears on the output prints at 32 mm intervals Cause Solution 1 Developer has reached end of life 2 Incorrect output from the HVPS 1 Replace the toner cartridge 2 Check the HVPS supply voltage Clean the HV terminals on the cartridge and cartridge set Replace the HVPS if the problem persists DigitalPrinter DigitalPrinter DigitalPrinter Digital...

Page 112: ...sible at 47 1 or 75 4 mm intervals on rear side of the output print Cause Solution 1 Transfer roller is contaminated 2 Pressure roller is contaminated 1 Perform the PC cleaning mode 2 3 times Then perform the self test 2 3 times Replace the transfer roller if the problem persists 2 Disassemble the fusing unit and clean the hot roller and the pressure roller Clean the area between the hot roller an...

Page 113: ... toner cartridge and cartridge set 4 5 16 BLANK PAGE 2 Description Blank page or several blank page s are printed or several blank pages are printed when the machine is turned on Cause Solution Defective solenoid Perform the engine self test mode in Tech Mode to check if the solenoid operation is intermittent or defective Replace the main PBA if the problem persists Digital Printer Digital Printer...

Page 114: ...st to check if the speaker and amplifier function correctly Replace the main board if the speaker and amplifier operate correctly 4 6 2 DEFECTIVE MF DIAL Description MF Dial does not function correctly Cause Solution 1 Telephone line cord is not securely connected to the TEL LINE 2 No click sound is heard when the OHD key is pressed 3 Faulty harness connection between the LIU and the main board 4 ...

Page 115: ...ly Forward function does not operate correctly or received data is corrupt Cause Solution 1 An unusual noise is heard when On Hook is pressed 2 Use the same socket if possible to verify if the destination fax machine can receive forwarded faxes 3 Cable between the machine and the wall socket is damaged 1 Repair the telephone line 2 Replace the LIU 3 Replace the line cord 4 6 5 DEFECTIVE FAX RECEIV...

Page 116: ...ed Cause Solution Receive mode is not set to Fax Mode Replace the LIU or main PBA in sequence if the problem persists even if the machine is set to Receive Mode 4 6 8 DEFECTIVE FAX RECEIVE 4 Description Received data is reduced by more than 50 in the printout Cause Solution A problem exists with the sending fax machine Ask the sender to check the status of their machine 4 6 9 DEFECTIVE AUTOMATIC R...

Page 117: ...e in Tech mode 4 7 3 UNUSUAL NOISE Description An unusual noise is heard within the ADF during copying Cause Solution 1 Faulty scanner motor gearbox or rollers 2 Faulty motor driver on driver PBA 1 Ensure that the gears and motor are correctly assembled Ensure that there are no particles or other material in the scanner path Replace worn parts 2 Replace the main PBA 4 7 4 DEFECTIVE IMAGE QUALITY D...

Page 118: ...ectly configured in the BIOS 2 Ensure that the scanner driver is installed 3 Replace the main PBA if the copy function does not operate Replace the CCD assembly if the problem persists 4 8 2 POOR QUALITY OF SCANNED IMAGES Description Image scanned via the PC is either poor or not clear Cause Solution 1 Waveform is abnormal 2 Resolution is set too low in the PC scan options 1 Perform a shading test...

Page 119: ...e problem persists Delayed function full The delayed fax job list memory space is full Cancel unnecessary fax jobs Document jam A jam occurred in the ADF Clear the document jam Door open The front or rear cover is not securely latched Close the clover until it locks into place Enter again Invalid item is entered Enter the correct item Function impossible A combination of printer functions that can...

Page 120: ...aper tray unit Operation not assigned An Add Cancel operation is being performed but there are no jobs waiting Check the operation panel to see if there are any jobs waiting The display shows scheduled jobs in stand by mode such as delayed fax Paper jam0 Open Close door Paper is jammed in the feed area of the paper tray Clear the jam Paper jam2 check inside Paper is jammed in the paper exit area C...

Page 121: ...nstall the toner cartridge Line busy The receiving machine does not answer or the line is busy Try again later Load document An attempt has been made to set up a copy fax job but no document is loaded in the ADF Load the document in the ADF and try again Scanner locked The scanner module is locked Unlock the scanner and press Stop Clear Stop pressed The Stop Copy button was pressed during a copy f...

Page 122: ...r are used 4 10 1 TONER CARTRIDGE PRECAUTIONS Do no expose the toner cartridge to direct light for more than a few seconds Print quality can be temporarily improved by redistributing the toner if the printed image is light due to low toner supply In this condition shake the toner cartridge side to side 5 6 times However the toner cartridge should be replaced at the first opportunity to ensure high...

Page 123: ...Low message To temporarily bypass this problem redistribute the remaining toner in the cartridge 1 Open the front cover A Then gently push the toner cartridge B down and remove it from the machine 2 Gently shake the toner cartridge B in the direction of the arrow as shown above Put the toner cartridge B back into the machine again and close the front cover A B273T01 WMF B273T02 WMF B273T03 WMF A B...

Page 124: ... in the toner cartridge Error Message Description Solution Toner Low The amount of remaining toner is less than 10 Replace the cartridge Toner Empty The toner cartridge is empty Replace the cartridge Drum Warning OPC drum is near end of life 14 000 pages Replace the cartridge even if there is still toner in it Replace Drum Toner cartridge mechanical life has expired Replace the cartridge ...

Page 125: ...ner has almost reached end of life Replace the toner cartridge 4 Shake the toner cartridge if white vertical bands appear on output prints and try to print again If the problem still persists the cartridge has reached end of life Replace the toner cartridge Toner contamination Toner contamination is visible at regular intervals on the printout Toner contamination is visible at random intervals ove...

Page 126: ...ol if necessary A 38 mm interval Charge roller B 95 mm interval OPC cycle 2 The OPC drum is damaged or matter clings on the drum if white spots are visible at 95 mm intervals in a black image or if black spots are visible in areas where they should not appear Perform the following if running the OPC clean mode print 4 5 times does not resolve the problem A 37 7 mm intervals Replace the toner cartr...

Page 127: ...e not approved by the manufacturer have been added or substituted into the toner cartridge 2 Check the toner cartridge for the following Replace the toner cartridge if necessary A Check the toner cartridge for damage B Check the appearance of following toner cartridge parts Frame hopper screws 3 Check the following if the printouts are not clear or rough 1 Make sure the terminal contact points are...

Page 128: ...tridge if the problem persists 2 Check the following if a black image is printed out A Check if matter remians on the terminal contact points of the cartridge set B Check if the terminal and charge roller contacts are correctly assembled Perform the following if the above are true Examine the charge roller contacts Clean them if they appear dirty or contaminated Replace the toner cartridge if the ...

Page 129: ...wing if you use Windows 1 Check that the printer driver in the controller is correctly set up 2 Ensure that the correct port is selected and Use On line is selected in the driver Print a test page from the driver properties if the printer driver is correctly set up Check in which program that printing does not work Open Memo Pad and try to print Adjust the setup within that program if the printer ...

Page 130: ... on the hard disk with the disk utilities program Printer error occurs even if there is enough space in the hard disk Ensure that the connection between the cable and printer port is correct Ensure that the port settings in CMOS are correct if you use the parallel port Parallel port related problems in the CMOS set up Select ECP for the printer port SPP and normal modes support 8 bit data transfer...

Page 131: ... Description Solution Insufficient space on the hard disk in the directory assigned for the basic spool Delete unnecessary files to free up space for spool storage Previous printing errors were not resolved Delete jnl files Then reboot Windows and try to print again There may be conflict with other drivers or programs Close all programs except the one you need An application program or printer dri...

Page 132: ...or the control panel and select Static IP Address Assignment Method Then set the IP address subnet mask and default gateway in the printer with SyncThru control panel or browser methods see Operating Instructions Print server does not use TCP IP protocol Ensure that the TCP IP protocol is installed and correctly configured in your PC Ensure that your PC is on the same network with the print server...

Page 133: ...figuration page does not print Ensure that the network card is correctly installed Then turn the machine on again Replace the network card if the problem persists SyncThru shows the firmware upgrade is complete The software version however does not show the firmware upgrade when the network configuration is printed Before upgrading the machine firmware use the ping command to ensure that the print...

Page 134: ... machine will still not print 2 Check the printer properties ports and make sure a TCP IP port has been allocated to the printer if the machine only prints via a local connection 4 12 3 SYNCTHRU INSTALLATION PROBLEMS Description Solution File transfer error shows during the installation process 1 Uninstall any previous versions of SyncThru Then restart the computer 2 Perform the following if the p...

Page 135: ...SERVICE PROGRAM MODE ...

Page 136: ......

Page 137: ...gain What you can do in Tech Mode Function Item Contents Send Level 9 15 dBm Dial Mode Tone Pulse Modem Speed 33 6 28 8 14 4 12 0 9 6 4 8 K bps Error Rate 5 10 Customer No Customer Name Service No Notify Toner Serial No Clear All Memory Select Country 5 5 Total Page CNT FLT Scan CNT ADF Scan CNT Clear Count Enter Password 1934 enter Used Toner CNT Flash Upgrade Local Remote Silence Time 12 Sec Unl...

Page 138: ...hecked for both transmitter and receiver when the fax connects with a remote set The lowest value is used It is best set at 33 6Kbps default Error Rate The Baud rate automatically adjusts to 2400 bps when the error rate goes past the set value This ensures that the error rate stays below the set value You can select the rate between 5 and 10 Notify Toner With this feature enabled when the toner be...

Page 139: ...es it to the country code that you set Note Perform this procedure after replacing the main board If this procedure is not performed the system will not operate correctly Flash Upgrade The firmware upgrade has these functions Local and remote Examine the firmware upgrade section 5 3 Silence Time In ANS FAX mode after a call is picked up by the answering machine the machine monitors the line If a p...

Page 140: ...peaker The modem part of the main board amplifier speaker or speaker harness is faulty if no transmission signal sound is heard DRAM Test DRAM Test tests the machine s DRAM The LCD shows OK if the memory operates correctly ROM Test ROM Test tests the machine s ROM The result and the software version show on the LCD display FLASH VER 1 00 V ENGINE VER 1 00V Pattern Test The pattern printout is used...

Page 141: ...R button and an image will be scanned 3 CCD shading profile is printed after the image is scanned 4 The CCD is defective if the printed image is not the same as the sample image shown NOTE Ensure that the cover is closed when you test the CCD 5 1 4 REPORTS Protocol List Protocol List shows the sequence of the CCITT group 3 T 30 protocol for the most recent sending or receiving operation This list ...

Page 142: ...port Setting Phone book All setting Machine Set up Scan Time Out Darkness Lighten Normal Darken Text Photo Photo Original type Text Reduce Enlarge Original LGL LTR Default Change Number Of Copies 1 99 3 Copy Setup Timeout 15 30 60 180 off Receive Mode Fax Tel Ans Fax Ring to Answer 1 7 Darkness Lighten Normal Darken Redial Term 1 15 Redials 0 13 MSG Confirm On Off On Err Auto Report On Off Auto Re...

Page 143: ... Junk Fax List Junk Fax List 7 Reports Scan Journal Reset Network Yes No Config Network TCP IP Set to Default Yes No 8 Network Setup Print net CFG Yes No Speaker On Off Comm Ringer Off Low Med High Key Sound On Off 9 Sound Volume Alarm Sound On Off Clean Drum Yes No Auto Cleaning On Off Notify Toner On Off Clear Settings All Paper Copy Fax Fax features Advanced fax Send report RCV report Phonebook...

Page 144: ...parallel cable or USB cable 3 Perform the Printer Setting Utility and set the Firmware Update tab Current firmware version and emulation version are shown 4 Save the firmware file on the PC in a path near the root of C ie C TEMP Use the Browse button to obtain the firmware file to update the machine 5 Click the Update button The firmware file automatically downloads to the printer The printer is i...

Page 145: ...st as a precaution to back up system data and settings 2 Download the firmware onto the PC NOTE 1 Ensure that both the Printer Firmware and Network Firmware are downloaded if both are to be updated 3 Access Web Image Monitor using the correct IP address 4 Select Maintenance as shown below B273 B273S03 TIF ...

Page 146: ...is selected as shown below NOTE Proceed to step 9 if only the Network Firmware is to be upgraded 6 Click the Browse button and select the printer firmware file saved on the PC 7 Click the Upgrade button 8 Ensure that the firmware is completely updated B273S04 TIF A ...

Page 147: ...1 Click the Upgrade button 12 Ensure that the firmware is completely updated 5 3 2 FIRMWARE RECOVERY PROCEDURE The machine will not operate if the update procedure did not function correctly In this case perform the following steps 1 Turn the power off and then on 2 Repeat the steps in download procedure 5 3 1 Web Image Monitor Mode The machine will restart the upgrade procedure B273S05 TIF B ...

Page 148: ...st on the LCD The Engine Test Mode is divided into 5 functions 0 4 5 4 1 HOW TO ENTER ENGINE TEST MODE Perform this procedure to enter Engine Test Mode Press Menu 1 9 3 1 in sequence TECH will appear on the LCD The machine will then enter Engine Test Mode Use the operation panel arrow keys to navigate the Engine Test Mode menus Press the Clear Stop button to exit Engine Test Mode ...

Page 149: ...e sensor 2 Exit sensor test 2 Next Next sensor test 1 Check Read the sensor 3 Cover sensor test 2 Next Next sensor test 1 Check Read the sensor 4 Empty sensor test 2 Next Next sensor test 1 Check Read the sensor 2 5 Manual sensor test 2 Next Next sensor test 1 Therm ADC 180 1 On 2 Off maintain the fusing temperature 80 C 2 Therm ADC 140 1 On 2 Off maintain the fusing temperature 135 C 3 Therm ADC ...

Page 150: ...tor starts and Laser Ready appears if the motor spins at the correct speed Otherwise Laser Error is shown Laser ready on off 13 LD test Diode On shows when the laser diode is on Otherwise Diode off is shown Diode on off 21 Feed sen test 22 Exit sen test These show the current state of the sensor Sensor off or sensor on 23 Cover sen test This shows the current state of the cover sensor Touch the se...

Page 151: ...group of parameters are printed at the bottom of each page These parameters show the print engine condition Generally this function is not necessary for service use This setting remains on after exiting Engine Mode Ensure that if this function is used it is set back to off after activities are complete ...

Page 152: ......

Page 153: ...DETAILED DESCRIPTIONS ...

Page 154: ......

Page 155: ...UT 6 1 1 FRONT VIEW A ADF H Paper level indicator B Document guides I Front door C Input tray J By pass tray D Output tray K Standard paper tray unit E Operation panel L Paper output extension F Front output tray face down M USB flash drive port G Optional paper tray unit B273D01 WMF A B C D E F G H I J K L M ...

Page 156: ...untry has a unique or different than the typical telephone system used by most countries B273D02 WMF A Face up door F Optional paper feed tray connector B Control board cover G External jack C Network port H Line jack D Parallel connector I AC power connector cord E USB connector J Power switch A B C D E F G H I J K ...

Page 157: ... Feeding Standard Center Loading Feeding Capacity Cassette 250 sheets 75g m2 20lb paper standard Manual 1 sheet paper OHP envelop etc Paper detecting sensor Photo sensor Paper size sensor None 6 2 2 TRANSFER ASSEMBLY The transfer assembly consists of the PTL Pre Transfer Lamp and the transfer roller The PTL sends light to the OPC drum This light lowers the charge on the drum s surface and improves...

Page 158: ...r does not remain on the roller surface Pressure Roller The pressure roller is mounted under the hot roller It is made of a silicon resin and the surface of the roller is coated with Teflon This ensures that toner does not remain on the roller surface Safety Features The machine has the following countermeasures to prevent overheating 1 1st protection device Hardware is disabled when the machine t...

Page 159: ...nels R G B Effective pixel 5 400 pixels Voltage 24V 5V Pre heating time Maximum 30 seconds 70 of light output reached Life span of the lamp 30 000 hours 25 C 6 2 6 LASER SCANNING UNIT LSU The laser scanning unit converts video data received from machine control into an electrostatic latent image on the surface of the OPC drum This is achieved by controlling the laser beam and exposing the surface ...

Page 160: ... cartridge unit consists of the toner supply roller developing roller and doctor blade There is no Toner Near End sensor in the machine However the machine has a Toner Remaining Amount Sensor A cleaning blade is used to collect used toner Developing method Non magnetic one element contacting method Toner Non magnetic one element shatter type toner Toner life span 5 000 sheets IDC Pattern A4 standa...

Page 161: ... situation threshold to detect toner end is shorter than that for supply CRU 6 2 9 TONER END DETECTION The machine does not have a Toner End Sensor The machine checks the amount of toner via software The machine counts and adds up black dots as toner consumption For example the following occurs when the machine prints 5 of black rate chart Starter cartridge Approx 4 750 000 000 dots will be added ...

Page 162: ...D Convertible 29 Jack DIN 10 SRAM 20 USB Host The Engine Board and Controller Board are both on a single PBA and consist of the following CPU Printer scanner Line control functions The CPU functions as the bus controller I O handler motor driver and PC inter face The Main Board sends the image video data to the LSU and manages the electrophotographic printing process Circuits on the PBA drive incl...

Page 163: ...DIMM sockets to allow for additional DRAM or Flash ROM Postscript Option installation Capacity 16 MB Access Time 100nsec 6 3 4 FLASH MEMORY Records downloads system program from the PC Interface Fax for journal list Memory for one touch dial Speed dial list Size 4M Byte Access Time 70 nsec 6 3 5 SDRAM SDRAM is used for the following Swath buffer in printing Scan buffer in scanning ECM buffer in fa...

Page 164: ...ngine Board and an actuator on the frame detect when the paper exits cleanly from the machine The sensor checks the signal P_EXIT and detects the on off time of the Exit Sensor Jam2 shows on the operation panel if a jam status is detected Cover Open Sensor The Cover Open Sensor actuator is located on the front cover the sensor is located in the mainframe Power 24V is cut to the following when the ...

Page 165: ... the system and outputs 5V 12V and 24V supplies to the Main and other PBAs The HVPS creates the high voltage of THV MHV Supply Dev and supplies it to the toner cartridge The CPU modifies some of these voltage settings to provide the ideal voltages to create the image The HVPS uses the 24V and outputs the high voltage for THV MHV BIAS Output high voltage is supplied to the following Toner OPC cartr...

Page 166: ... this condition a black page is printed out Cleaning Voltage THV This voltage removes toner contamination from the rear side of the paper by sending negative polarity to the transfer roller This forces toner to transfer back to the to OPC drum Output Voltage 1200V 300V 150V Failure Symptom Smudges and toner contamination appear on the reverse side of the printed page Developing Voltage DEV This vo...

Page 167: ... this situation prints are difficult to see OPC Ground ZENER Voltage This voltage prevents image contamination under low temperature and low humidity environmental conditions The ZENER diode is connected to OPC ground when a set prints without an output voltage of 130V DC 15V is maintained Failure Symptom There is no serious image problem in the general environment when the ZENER diode is 0V Howev...

Page 168: ...Input voltage fluctuating range AC 198V 264V AC 90V 135V AC 198V 264V Rated frequency 50 60 Hz Frequency fluctuating range 47 63 Hz Input current Under 5 0A 2 5A when the fusing lamp is off and input output voltages are in range 2 Rated Output Power No Item CH2 CH3 Remark 1 Channel Name 5V 24V 2 Connector pin Con 23 5V pin 3 4 GND pin 5 7 Con 23 24V pin 11 13 GND pin 9 10 18 3 Rated output 5V and ...

Page 169: ...nder 3 5mA Operating current under 40A peak at 25 c cold start under 60A peak in other conditions Rise Time Within 2Sec Fall Time Over 20ms Surge Ring Wave 6KV 500A Normal Common 7 Environment Condition Operating temperature range 0 C 40 C Storage temperature range 25 C 85 C Storage humidity range 30 90 RH Operating atmospheric pressure range 1 8 EMI Requirement CISPR FCC CE MIC C Tick 9 Safety Re...

Page 170: ... the Engine Control section The phototriac LED flashes when the HEATER ON signal is activated by the engine The flashing light causes the triac to switch and supplies a voltage to the gate of triac As a result AC current is then supplied to the fusing lamp and heat is produced On the other hand when the signal is off the phototriac is off At this time the voltage is cut at the gate of triac In thi...

Page 171: ...aper reaches the Feed Sensor This means that the leading edge of the paper already passed the Feed Sensor or that the sensor is faulty Jam1 inside the machine Jam1 occurs at the following times The trailing edge of the paper does not pass the Feed Sensor within a specific time interval after the leading edge of the paper passes the Feed Sensor During this time the Feed Sensor cannot be Off The pap...

Page 172: ...is fed back value the PWM cycle is changed to maintain the required transfer voltage 6 5 4 FUSING The temperature of the heat roller s surface is detected from the resistance value of the thermistor The thermistor resistance is measured with the A D converter This allows the CPU to determine the temperature of the heat roller The AC power is controlled by comparing the target temperature to the va...

Page 173: ... occurs When the polygon motor speed reaches target LReady occurs If these two conditions are satisfied the status bit of the LSU controller register becomes one and the LSU is determined by control logic to be ready 6 6 OPERATION PANEL OPE The OPE consists of various function keys and an LCD to show machine status and messages A MICOM HOLTEC HT48R50 drives the LEDs and LCD Communication between t...

Page 174: ...d at Fax transmission V 90 PCM V 34 Duplex Data Modes data modem only 6 8 2 LIU PBA The LIU board is the line interface unit and consists of the following Tel_line Interface circuit Telephone circuit The Tel_Line circuit consists of the following A matching transfer to conform to the impedance of the receiving telephone line A circuit to isolate the fax machine from the PSTN A surge absorber to pr...

Page 175: ...SPECIFICATIONS ...

Page 176: ......

Page 177: ...aximum 216 x 356mm 8 5 x 14 inch Paper size Minimum 76 x 127mm 3 5 inch Paper weight 47 105 g m2 12 5 28 lb Capacity 50 sheets Width 142 x 216mm 5 6x 8 5 inch ADF Length 148 x 356mm 5 8 x 14 inch Network Protocol SPX IPX TCP IP Ethertalk SNMP HTTP 1 1 DLC LLC Machine size W D H 450 x 423 x 456 mm 17 7 x 16 7 x 18 inch With toner cartridge 15 6 Kg 34 3 lb Weight Without toner cartridge 14 8 Kg 32 6...

Page 178: ...time from energy saver mode Less than 42 seconds 3 PRINT SPECIFICATIONS 22 ppm LT Print speed 20 ppm A4 600 dpi Printer drivers PCL6 Auto emulation sensing Supported Font 45 Scalable 1 Bitmap Energy Save Mode 5 10 15 30 45 min Normal 600 x 600 dpi Resolution RET 1200 x 1200 dpi Toner save mode Supported Memory 16 MB From standby Less than 10 seconds First print time From energy saver mode Less tha...

Page 179: ...SB 1 1 Linearity Approximately 75 seconds USB 1 1 Gray Approximately 75 seconds USB 1 1 Scan speed through platen Color Approximately 150 seconds USB 1 1 Optical 600 x 1200 dpi Resolution Enhanced 4800 x 4800 dpi Halftone 256 levels Maximum document width 216 mm 8 5 inch Scan area Effective scan width 208 mm 8 2 inch Scan to E mail Image OCR Fax Web Color 24 bit Scan depth Monochrome 1 bit for lin...

Page 180: ...int 600 x 600 dpi Platen 25 400 Zoom ADF 25 100 Multi copy 1 99 Copy mode Text Mixed Photo all supported Preset Supported Darkness control 3 levels LED Collation copy Supported 600 x 300 dpi Auto return to default mode Supported off 15 30 60 180 seconds Changeable default mode Contrast image reduce enlarge number of copies N up 2 up 4 up Collation copy Supported ADF only Auto fit copy Supported Pl...

Page 181: ... I F Supported Tone Pulse Supported selected in Tech Mode Pause Supported Auto redial Supporterd Last number redialed Supported Distinctive ring Supported Caller ID Supported External phone interface Supported Tx Rx Journal Supported Confirmation Suppoprted Auto dial list Suppoprted Report and list print out System data list Suppoprted Ring volume Off Low Medium High Key volume On Off Alarm volume...

Page 182: ... out Not supporterd Multiple page scan 14 ppm LT Receive mode Fax TEL Ans Fax DRPD Capacity 4 MB optional memory not supported Max locaations to store 1 group dial 199 locations Fax forward Supported On Off Broadcasting Supported up to 209 locations Cover page Supported Delayed fax Supported Memory Memory RX Supported Vioce request Not supported TTI Supported RTI Supported Polling Not supported Fl...

Page 183: ...Supported Drivers PC Fax Supported through PC modem and fax S W 9 PAPER SIZES WEIGHTS Paper Tray Supported Paper Sizes Remarks Standard Paper tray A6 A5 A4 B5 81 2 x 11 81 2 x 13 81 2 x 14 Plain paper A6 A5 A4 B5 71 4 x 101 2 81 2 x 11 81 2 x 13 81 2 x 14 By pass tray Irregular size 76 216 x 127 356 mm 3 0 8 5 x 5 0 14 0 Plain paper Envelope Transparency Label Card Post card Paper Tray Paper Weigh...

Page 184: ......

Page 185: ...APPENDIX ...

Page 186: ......

Page 187: ...BLOCK DIAGRAM SM 8 1 B273 Appendix APPENDIX BLOCK DIAGRAM B273X01 WMF ...

Page 188: ...CONNECTION DIAGRAM B273 8 2 SM CONNECTION DIAGRAM B273X02 WMF ...

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