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PRINTING QUALITY PROBLEMS 

B173 4-20 SM 

4.6  PRINTING QUALITY PROBLEMS 

4.6.1  VERTICAL BLACK LINE AND BAND  

Description

 

1.  Straight thin black vertical line(s) occurs in the printing 
2.  Dark black vertical band(s) occur in the printing. 
 
 
 

Check and Cause 

Solution 

1. Damaged develop roller in the 
Developer. Deformed Doctor-blade or 
cleaning-blade. 

If causes 1 and 2 occur in the 
developer cartridge, replace the AIO 
and try to print again. 

2. Scratched surface of the discharge 
roller in the developer. 
3. Partial depression or deformation on 
the surface of the transfer roller. 

Replace the transfer roller if occurred 
as No. 3. 

 
 

Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer

 

B173T913.WMF 

Summary of Contents for AC104

Page 1: ...B173 SERVICE DOCUMENTATION 001954MIU RICOH GROUP COMPANIES...

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Page 3: ...B173 SERVICE DOCUMENTATION RICOH GROUP COMPANIES...

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Page 5: ...B173 SERVICE DOCUMENTATION 001954MIU...

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Page 7: ...RMISSION 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 respe...

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Page 9: ...tion 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...

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Page 11: ...LEGEND PRODUCT CODE COMPANY GESTETNER LANIER RICOH SAVIN B173 DSm516 AC017 AC104 AC104 DOCUMENTATION HISTORY REV NO DATE COMMENTS 6 2004 Original Printing...

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Page 13: ...3 6 ADF MOTOR ASS Y 3 11 3 7 OPE UNIT ALSO KNOWN AS OP PORT 3 13 3 8 MIDDLE COVER AND EXIT ROLLER 3 14 3 9 ENGINE SHIELD ASS Y 3 16 3 10 MAIN PBA MAIN BOARD 3 17 3 11 SMPS ALSO KNOWN AS POWER SUPPLY...

Page 14: ...6 4 5 2 DEFECTIVE LCD OPERATION 4 16 4 5 3 NOT FUNCTIONING OF THE FUSER GEAR DUE TO MELTING AWAY 4 16 4 5 4 PAPER EMPTY 4 17 4 5 5 PAPER EMPTY WITHOUT INDICATION 4 17 4 5 6 COVER OPEN 4 17 4 5 7 NO LA...

Page 15: ...9 2 DEFECTIVE IMAGE QUALITY OF PC SCAN 4 38 4 10 ERROR MESSAGES 4 39 BYPASS JAM 4 39 COMM ERROR 4 39 DOCUMENT JAM 4 39 DOOR OPEN 4 39 GROUP NOT AVAILABLE 4 39 HEATING ERROR 4 39 LINE BUSY 4 39 LINE E...

Page 16: ...6 PATTERN TEST 5 6 SHADING TEST 5 7 5 2 5 REPORT 5 8 PROTOCOL LIST 5 8 SYSTEM DATA 5 8 5 2 6 NEW CARTRIDGE 5 8 5 3 DATE OF SALE 5 8 5 4 FIRMWARE DOWNLOAD 5 9 5 4 1 DOWNLOAD PROCEDURE 5 9 RCP Remote C...

Page 17: ...in function block 6 7 6 4 2 FLASH MEMORY 6 8 6 4 3 SDRAM 6 8 6 4 4 SENSOR INPUT CIRCUIT 6 8 Paper Empty Sensor 6 8 MP Sensing 6 8 Paper Feed and Toner Cartridge Sensor 6 8 Paper Exit Sensor 6 8 Cover...

Page 18: ...3 SCAN SPECIFICATION 7 2 4 COPY SPECIFICATION 7 3 5 TELEPHONE SPECIFICAITON 7 4 6 FAX SPECIFICATION 7 5 7 PAPER HANDING 7 6 8 SOFTWARE 7 7 9 CONSUMABLES 7 7 APPENDIX BLOCK DIAGRAM 1 CONNECTION DIAGRA...

Page 19: ...condition WARNING Never operate or service the printer with the protective cover removed from Laser Scanner assembly The reflected beam although invisible can damage your eyes When using this product...

Page 20: ...fire can occur due to an over current condition in the outlet 4 Do not put water or other liquid pin clip etc in the machine It can cause a fire electric shock or malfunction If this occurs immediate...

Page 21: ...s 13 Do not insert steel or metal pieces inside outside of the machine Do not insert metal pieces into the ventilator slots An electric shock can occur PRECAUTION RELATED TO HANDLING THE MACHINE If yo...

Page 22: ...sily damaged by static electricity Such components are commonly called Electro statically Sensitive ES Devices or ESD s Examples of typical ESD s are integrated circuits some field effect transistors...

Page 23: ...uctive foam aluminum foil or a comparable conductive material 7 Immediately before removing the protective shorting material from the leads of a replacement ESD touch the protective material to the ch...

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Page 25: ...NANCE REPLACEMENT AND ADJUSTMENT TROUBLESHOOTING SERVICE TABLES DETAILED DESCRIPTIONS SPECIFICATIONS APPENDIX TAB POSITION 2 TAB POSITION 1 TAB POSITION 3 TAB POSITION 4 TAB POSITION 6 TAB POSITION 5...

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Page 27: ...INSTALLATION...

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Page 29: ...INSTALLAITON SM 1 1 B173 Installation 1 INSTALLAITON Refer to the operating instructions for details...

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Page 31: ...PREVENTIVE MAINTENANCE...

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Page 33: ...ntal conditions and use will change The cycle period shown is for reference only Component Replacement Cycle Done by ADF Rubber 20 000 Pages Service Scanner ADF Pick up Ass y 60 000 Pages Service Fric...

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

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Page 37: ...ments are in the memory 2 Disconnect the power cord 3 Remove the toner and drum cartridges before you disassemble parts 4 Use a flat and clean surface 5 Replace only with necessary components 6 Do not...

Page 38: ...ve the four screws from the rear cover 2 Remove the rear cover A from the frame assembly and scanner assembly 3 Release the cover face up B that attaches the rear cover Then lift the cover face up out...

Page 39: ...ent and Adjustment 3 3 SIDE COVERS 1 You must remove the rear cover 3 2 before you remove the side covers 2 Disconnect the speaker A 3 Lift the Left cover B and Right cover C in the direction of arrow...

Page 40: ...ER B173 3 4 SM 3 4 FRONT COVER 1 Remove the cassette A 2 Open the front cover B 3 Remove the front cover that attaches the frame assembly Then remove the front cover B173R905 WMF B173R906 WMF B173R907...

Page 41: ...ment 3 5 SCANNER ASS Y 1 You must remove these before you remove the scanner ass y Rear cover 3 2 Side covers 3 3 2 Remove the two screws from the scanner ass y A 3 Disconnect the 6 connectors from th...

Page 42: ...SCANNER ASS Y B173 3 6 SM 4 Pull up the scanner ass y A 5 Pull the platen cover B up Then remove it B173R910 WMF B173R911 WMF A B...

Page 43: ...Adjustment 6 Remove three screws from the scan lower assembly 7 Remove the OPE unit A Then disconnect the two connectors from the OPE unit Then remove it 8 Remove the four screws from the window cover...

Page 44: ...SM 9 Release the window cover A from the scan lower assembly Then pull the window cover up Then remove it 10 Remove the CCD Cable B 11 Push the belt holder Then remove the Belt C B173R915 WMF B173R916...

Page 45: ...ment and Adjustment 12 Pull up the CCD shaft A Then remove the scanner module B 13 Remove the reduction gear C and idle gear D 14 Remove the two screws Then remove the motor bracket E B173R918 WMF B17...

Page 46: ...SCANNER ASS Y B173 3 10 SM 15 Disconnect the connector A from the open sensor assembly B 16 Release the open sensor C Then remove it B173R921 WMF B173R922 WMF C B A...

Page 47: ...ment 3 6 ADF MOTOR ASS Y 1 Before you remove the ADF Motor Ass y you must remove these Rear Cover 3 2 Side Covers 3 3 Scanner Ass y 3 5 2 Remove the two screws from the ADF ass y A Then remove it 3 Re...

Page 48: ...it until it gets to the slot Then remove the pick up ass y B 5 Remove the two screws from the upper cover C Then remove it 6 Disconnect the connector Then remove four screws from the ADF motor ass y D...

Page 49: ...OWN AS OP PORT 1 Before you remove the OPE Unit you must remove these Rear Cover 3 2 Side Covers 3 3 Scanner Ass y 3 5 2 Remove the six screws from the OPE PBA A and OPE cover B 3 Remove the contact r...

Page 50: ...Before you remove the Exit Roller you must remove these Rear Cover 3 2 Front Cover Ass y 3 4 Side Covers 3 3 Scanner Ass y 3 5 2 Remove the six screws from the top cover A 3 Release the top cover from...

Page 51: ...OVER AND EXIT ROLLER SM 3 15 B173 Replacement and Adjustment 4 Remove the two screws from the rear upper cover A 5 Remove the exit gear B and bearing C from exit roller D B173R933 WMF 1 2 B173R934 WMF...

Page 52: ...you remove the engine shield ass y you must remove these Rear Cover 3 2 Side Covers 3 3 Scanner Ass y 3 5 2 Remove the two screws Then disconnect the FPC cable from the main PBA Then remove the LIU P...

Page 53: ...tem data list in Tech mode to keep programmed data before you do the replacement procedure 2 Do the Clear All Memory in Tech mode 5 1 3 after you finish the replacement procedure 1 Before you remove t...

Page 54: ...move these Rear cover 3 2 Side covers 3 3 Scanner Ass y 3 5 Engine shield ass y 3 9 2 Remove the three screws from the inlet bracket A Then remove it 3 Disconnect one connector Then remove the one scr...

Page 55: ...ain can cause failure To avoid hazardous situations do not replace any components inside the fusing unit such as thermistor hot roller stripper pawls fusing lamp etc 1 Before you remove the fuser ass...

Page 56: ...you must remove these Rear cover 3 2 Side covers 3 3 2 Disconnect the connector from the SMPS Then remove the one screw Then remove the fan A B173R949 WMF A CAUTION Make sure to set the fan in the co...

Page 57: ...SU LASER SCANNING UNIT 1 Before you remove the LSU you must remove these Rear cover 3 2 Side covers 3 3 Scanner Ass y 3 5 Front cover 3 4 Middle cover 3 8 2 Disconnect the two connectors 3 Remove the...

Page 58: ...Y 1 Before you remove the drive ass y you must remove these Rear cover 3 2 Side covers 3 3 2 Remove the six screws from the drive ass y A 3 Remove the drive ass y Then disconnect the connector from t...

Page 59: ...3 2 Side covers 3 3 Scanner Ass y 3 5 Front cover 3 4 Middle cover 3 8 LSU 3 14 2 Remove the three screws from the transfer ass y A Then remove it 3 Disconnect the PTL holder connector Then remove the...

Page 60: ...vers 3 3 Scanner Ass y 3 5 Front cover 3 4 Middle cover 3 8 Drive ass y 3 15 2 Remove the two screws from the paper guide A Then remove it 3 Pull up the feed idle bushing B Then pull up the feed idle...

Page 61: ...SM 3 25 B173 Replacement and Adjustment 5 Remove the idle gear A and feed gear 2 B 6 Remove feed gear 1 assembly C 7 Pull up the feed roller D and feed roller 1 E B173R960 WMF B173R961 WMF B173R962 WM...

Page 62: ...he pick up ass y you must remove these Rear cover 3 2 Side covers 3 3 Front cover 3 4 Scanner Ass y 3 5 Middle cover 3 8 Engine shield Ass y 3 9 Drive Ass y 3 15 2 Remove the three screws from the fee...

Page 63: ...3 27 B173 Replacement and Adjustment 4 Remove the pick up ass y A 5 Remove the two screws from the manual solenoid B and pick up solenoid C Then remove the manual solenoid and pick up solenoid 1 2 B1...

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Page 65: ...TROUBLESHOOTING...

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Page 67: ...PAPER PATH Scanner Part PTL PR CR DR SR TR FR OPC L S U Fuser Toner Cartridge 1 2 3 4 5 6 8 7 Sensor Doc ADF Roller Pickup Roller Exit Roller Doc Paper 30Sheets ADF Idle Roller Feed Roller CCD Module...

Page 68: ...me passes 4 The paper passed the paper exit sensor moves out from the set Jam 2 occurs sometime after if the tailing edge of the paper has not exited out from the set after the leading edge of paper p...

Page 69: ...hts red Find and remove the jammed paper If you don t see the paper open the covers Do not use a pinset or a sharp metal tool when removing a jam 4 2 1 CLEARING PAPER JAMS If paper jams occur PAPER JA...

Page 70: ...l the paper cassette open 3 Remove the jammed paper by gently pulling it straight out NOTE If there is any resistance when you pull the paper or the paper is not seen in this area skip to the fuser ar...

Page 71: ...he fuser area is hot Be careful when removing paper from 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 ton...

Page 72: ...ntinue to Step 2 2 Gently pull the paper out of the front output tray 3 If there is any resistance when you pull the paper or the paper is not seen in the front output tray open the rear cover 4 Remov...

Page 73: ...avoided If a paper jam occurs follow the steps outlined in Clearing Paper Jams Follow the procedures in Loading Paper Ensure that the adjustable guides are positioned correctly Do not overload the pap...

Page 74: ...he document gently to the right and out of the ADF 3 Close the ADF top cover Then load the documents back into the ADF NOTE To prevent document jams use the document glass for the thick thin or mixed...

Page 75: ...2 Turn the release knob so that you can easily remove the misfed document and remove the document from the ADF or the feed area by carefully pulling it towards the right by using both hands 3 Close th...

Page 76: ...iod Kind of Abnormal Image 1 OPC Drum 75 5 mm White spot Block spot 2 Charge Roller 37 7 mm Black spot 3 Supply Roller 37 0 mm Horizontal density band 4 Develop Roller 35 2 mm Horizontal density band...

Page 77: ...k the solenoid by using Engine Test Mode Diagnostic Mode 0 Replace the solenoid Check if the pad is loose due to bad sealing of the side pad Replace the side pad or assembly L or R if necessary Check...

Page 78: ...just after passing through the Actuator Feed Check and Cause Solution If the recording paper is jammed in front of or inside the toner cartridge Replace the SMPS Power supply The actuator may be defe...

Page 79: ...art is deformed in shape Check if burrs occur in the assembly part of the actuator Check if the actuator is smoothly operated Check if unwanted matters and wire got caught in the actuator exit s opera...

Page 80: ...hol The front and back side of the paper is mixed Use smooth paper 4 4 6 PAPER STAYS ROLLED IN THE FUSER Description If contaminated at intervals of 57 mm on the back of a paper Check and Cause Soluti...

Page 81: ...ning the OPC against the ongoing direction Clean fingerprints on the OPC softly with soft cloth dampened with IPA Isopropyl Alcohol and a tissue 4 4 8 DEFECTIVE ADF Description ADF does not operate co...

Page 82: ...then replace the OPE assembly Connector Board and Main Board in sequence 4 5 2 DEFECTIVE LCD OPERATION Description Defective LCD Operation Check and Cause Solution Clear the memory 5 2 3 The key is de...

Page 83: ...rator panel does not come on when the paper cassette is empty Check and Cause Solution Bending or deformation of the actuator of the paper sensor Replace the defective actuator The function of the Mai...

Page 84: ...inting and paper does not feed into the printer resulting Jam 0 Check and Cause Solution Motor harness or Main Board may be defective Check the motor harness if defective replace Perform Engine Test M...

Page 85: ...CAL LINES CURVED Description When printing vertical lines curve Check and Cause Solution Replace LSU If the supply of 24v is unstable in the Main Board linking with LSU check drive by Engine Test Mode...

Page 86: ...on 1 Damaged develop roller in the Developer Deformed Doctor blade or cleaning blade If causes 1 and 2 occur in the developer cartridge replace the AIO and try to print again 2 Scratched surface of th...

Page 87: ...light image occur in front of the image Open the cover of LSU and clean with a cotton swab on the surface of the reflex mirror with a clean cotton swab It may occur when a Burr and foreign substances...

Page 88: ...each voltage terminal of the Charge Supply Develop and Transfer roller remove the toner particles and paper particles The rollers of developer may be stained Charge roller 37 7 mm Supply roller 37 mm...

Page 89: ...or 3 times If faded areas or voids occur in a black image at intervals of 75 5 mm or black spots occur elsewhere the OPC drum surface is damaged In case of 75 5 mm interval clean foreign substances st...

Page 90: ...ent temperature is below than 10 C Wait 30 minutes after the machine is powered on before you start printing Bad contact caused by the toner stains between the high voltage terminal in the HVPS and th...

Page 91: ...did not correct the problem replace the HVPS SMPS 4 6 7 UNEVEN DENSITY Description Print density is uneven between left and right Check and Cause Solution The pressure force on the left and right spr...

Page 92: ...used Quality is not guaranteed when using recycled paper The life of the Developer has expired Replace the AIO The up to down movement of the transfer roller is swift Clean the bushings on the transf...

Page 93: ...main body and the electrode in the HVPS board Problem in the toner cartridge replace the AIO and try to print again The life of developer is expired Replace the Main Board if not solved by the above t...

Page 94: ...returning to the original Mode 4 6 11 GHOST 3 Description White ghost occurs in the black image printing at 32 mm intervals Check and Cause Solution The life of the developer may be expired Problem i...

Page 95: ...on the face of the printed page is stained Check and Cause Solution Toner leakage due to improperly sealed developer Replace the AIO If the transfer roller is contaminated stains on the face of page w...

Page 96: ...transfer roller Replace the transfer roller if contaminated severely Pressure roller is contaminated Replace the fuser 4 6 15 BLANK PAGE PRINT OUT 1 Description Blank page is printed Check and Cause...

Page 97: ...nk pages print Check and Cause Bad ground contacts in OPC and or developer Remove contamination of the terminals of the AIO Perform the engine self test using Engine Test Mode diagnostic code 0 to che...

Page 98: ...the Speaker connection and try to replace it Check if the SPEAKER is connected correctly Lastly try to replace the Main Board 4 7 2 DEFECTIVE TONE DIAL Description The Tone Dial is not functioning Che...

Page 99: ...ning or the received data are broken Check and Cause Solution Check if there is NOISE when pressing on hook dial Check the RECEIVE condition by trying to forward a FAX to another fax machine from the...

Page 100: ...status of the forwarding side is also normal 4 7 7 DEFECTIVE FAX RECEIVE 3 Description The phone is ringing continuously but it cannot receive Check and Cause Solution Check if the RECEIVE mode is TEL...

Page 101: ...receiving function is not working Check and Cause Solution If the RECEIVE mode is set to the TEL MODE reset it to the FAX MODE Check if the RECEIVE mode is TEL MODE or FAX MODE Even after the RECEIVE...

Page 102: ...k page is printed out when Copy Check and Cause Solution Check the CCD problem in Main Board Check the CCD harness contact Check shading profile Remake shading profile in the tech mode 4 8 3 ABNORMAL...

Page 103: ...E QUALITY Description The copied image is light or bad Check and Cause Solution Check shading profile Remake shading profile in the tech mode Check the gap between original and scanner glass The gap a...

Page 104: ...s not reinstall the printer driver Refer to Operating Instructions Check if copy function operates normally If the copy function works replace the Main Board If the copy function does not work replace...

Page 105: ...problem Solution Try again DOCUMENT JAM Description Document jams in the feeder when document jam occurs at ADF Solution Clear the document jam DOOR OPEN Description Side cover is not correctly close...

Page 106: ...machine did not answer after all the redial attempts Solution Try again Make sure the remote machine is OK NO CARTRIDGE Description When the machine detected the toner cartridge has not been installed...

Page 107: ...aper exit unit Solution Clear the jam RETRY REDIAL Description The machine is waiting for the programmed interval to automatically redial Solution You can press START to immediately redial or STOP to...

Page 108: ...y improve the print quality by redistributing the toner Shake the toner cartridge however you should replace the toner cartridge to solve the problem thoroughly Redistributing Toner When the toner car...

Page 109: ...ribute the toner evenly inside the cartridge 4 Save the box and the cover for shipping Slide the new toner cartridge in until it locks into place 5 Close the front cover NOTE Help the environment by r...

Page 110: ...nning Unit LSU window with a cotton swab then recheck OK Lack of toner 2 In case of 2 if it becomes better after cleaning the LSU window then the cartridge is normal Because of foreign substance on th...

Page 111: ...ted with toner Check the life of the cartridge 2 Check whether it could be recycled Toner Contamination Toner is fallen on the papers periodically Contaminated with toner on prints partly or over the...

Page 112: ...intervals of 75 mm or black spots occur elsewhere the OPC drum is damaged or foreign substance is stuck to the surface 2 In case of 2 If they do not disappeared by running the OPC Cleaning Mode Print...

Page 113: ...black Black image printed out Check whether foreign sub stances are stuck to the terminal point of contact of the cartridge and the state of assembly Especially check the charged roller terminal 2 In...

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Page 115: ...SERVICE TABLES...

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Page 117: ...firm On Off On Err Auto Report On Off Auto Reduction On Off Discard Size 0 30 MM Receive Code 0 9 3 Fax Setup DRPD Mode Set On Off Delay Fax Enter number Priority Fax Enter number 4 Fax Feature Add Ca...

Page 118: ...ar Memory On Off This item shows only in some country code settings The table shows functions the user can set Examine the user manual for instructions The service manual shows things that the user ca...

Page 119: ...Toner Serial No Clear All Memory Select Country Code Total Page CNT CRU Print CNT FLT Scan CNT ADF Scan CNT Used Toner CNT Clear Count Enter Password 1934 enter Edit Toner Dot Flash Upgrade Local Remo...

Page 120: ...s automatic when modem speed sets at lower speed Keep the default at 33 6 Kbps ERROR RATE The baud rate automatically goes to 2400 bps when the error rate is not the same as the set value This keeps t...

Page 121: ...e after you replace the main board If you do not perform this procedure the system will not operate correctly CLEAR COUNT This function erases the counters stored in system memory Type password 1934 t...

Page 122: ...smission signal sound is heard the modem part of the main board is not operate correctly DRAM TEST Use this to examine the machine s DRAM The LCD shows the result The LCD shows O K if the memory works...

Page 123: ...e condition of the print out Then examine if there is CCD problems Procedure 1 Set the ADJUST SHADING in tech mode 2 Press the Enter key An image will be scanned 3 After the scan CCD SHADING PROFILE w...

Page 124: ...E OF SALE This function shows the date that the customer used the machine for the first time When the customer first operates the machine the machine starts a scan and page count The machine will keep...

Page 125: ...emulation version are shown 3 Keep the firmware file on the PC in a path near to the root of C ie C TEMP Use the Browse button to get the firmware file to update the machine 4 Push the update button...

Page 126: ...remote fax 1 Operate a fax with the most recent firmware to prepare it to send the upgrade 2 Select Remote in the Flash Upgrade of Data Setup menu in Tech mode Tech Mode Data Setup Flash Upgrade 5 2...

Page 127: ...MTR FAN SOL ETC PTL Test 1 On 2 Off LSU Motor Test 1 On 2 Off LSU Hsync Test 1 On 2 Off 1 LSU TEST LD Test 1 On 2 Off Check Check Sensor status Feed Sensor Test Next Next Sensor Check Check Check Sens...

Page 128: ...When the function is enabled a group of parameters are printed at the bottom of each page This shows the print engine condition This is not necessary for service use This setting will remain on when y...

Page 129: ...DETAILED DESCRIPTIONS...

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Page 131: ...PRINTER COMPONENTS SM 6 1 B173 Detailed Descriptions 6 DETAILED DESCRIPTIONS 6 1 PRINTER COMPONENTS 6 1 1 FRONT VIEW 6 1 2 REAR VIEW B173D900 WMF B173D901 WMF...

Page 132: ...m2 20 lb paper standard Manual 1 sheet Paper OHP Envelope etc Paper detect sensor Photo sensor Paper size sensor None 6 2 2 TRANSFER ASSEMBLY This unit has a PTL pre transfer lamp also known as the q...

Page 133: ...ith Teflon to prevent the melted toner from sticking to the heat roller Pressure roller The pressure roller located below the heat roller is made of silicon resin and the surface of the roller is coat...

Page 134: ...and image processor Located in CPU Mechanical ADF Automatic Document Feeder 6 2 6 LSU LASER SCANNER UNIT The video controller controls the LSU unit It scans the video data from the video controller w...

Page 135: ...it are in the same cartridge The OPC unit has the OPC drum A and charging roller B The developer unit has toner toner cartridge supply roller developing roller and doctor blade Developing procedure No...

Page 136: ...mber of CRU replaced Replaced Toner Counts 6 3 2 TONER END DETECTION The machine does not have a toner end sensor The machine determines the amount of toner with software The machine counts and adds t...

Page 137: ...an motor drive signal 6 4 1 ASIC CHORUS2 The 16 32 bit RISC micro controller gives a cost effective low power high performance micro controller solution for MFP Main function block 1 8V internal 3 3V...

Page 138: ...r Feed and Toner Cartridge Sensor When paper passes the actuator feed sensor part it detects the photo interrupter signal Then lets the CPU know the paper feed condition Then it sends image data If it...

Page 139: ...Drive Driven by transistor and controlled by the CPU When it is set high the transistor turns on and drives the fan It goes off when the sleep mode is set There are two solenoids driven by the paper p...

Page 140: ...density shows Toner on OPC drum cannot correctly transfer to the paper Charge voltage MHV Function Charges the OPC surface of with 900 V 1000 V Output voltage 1 3 KV 1 8 KV DC 50 V Error If MHV does n...

Page 141: ...cated at the bottom of the set It has the SMPS part which gives DC power to drive the system The AC heater control part gives power to fuser SMPS has four outputting channels 5 V 12 V 12 V and 24 Vs T...

Page 142: ...ge of the paper does not get to the feed sensor Feed sensor does not go on when the paper gets to the feed sensor This will show after the paper goes past the feed sensor Jam 1 The trailing edge of th...

Page 143: ...145 C for 4 seconds for consecutive pages 2 Sets at 25 C or lower than the fixed fusing temperature over 4 seconds for consecutive pages Over heat error Goes higher than 220 C for 3 seconds 6 6 5 LSU...

Page 144: ...uit to interface with a telephone line There is a ring detect circuit to detect a ring signal from a switchboard In addition there is a surge absorber to protect the machine during lightning storms 6...

Page 145: ...SPECIFICATIONS...

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Page 147: ...350 W Power Consumption Sleep Mode 20 W Power Switch Yes Operating 55 dBA Noise Standby 39 dBA Warm Up Less than 42 seconds Approval Class B Device Memory 16 MB Size W D H w o Hand Set 474 x 436 x 41...

Page 148: ...12 seconds FPOT Power Save Less than 54 seconds Duplex Print Manual driver support provided Printable Area 207 6 x 270 6 mm Letter 3 SCAN SPECIFICATION Configuration Desktop Halftone Gray Scale 256 le...

Page 149: ...Power Save Approx 54 seconds FCOT ADF Stand by Approx 17 seconds SDMC 16cpm A4 17 cpm LTR Platen MDMC 7cpm A4 17 cpm LTR SDMC 16 cpm LTR Copy Speed Letter ADF MDMC 4 cpm LTR Scan 600 600dpi Resolution...

Page 150: ...uto Redial Yes Last Number Redial Yes Distinctive Ring No Caller ID No External Phone Interface No Tx Rx Journal Yes Confirmation 2 types available With Image TCR w o image TCR Help List No Auto Dial...

Page 151: ...x 300dpi Std Approx 5sec LTR Fine Approx 7 5sec LTR Scan Speed Super Fine Approx 7 5sec LTR Rx fax duplex print out No Multiple page scan speed Approx 7 ppm LTR Receive Mode Fax TEL Capacity 4MB 320 p...

Page 152: ...3 4 9 10 DL C5 B5 Main tray 16 24 lb 60 90 G m2 Paper Weight Bypass 16 32 lb 60 163 G m2 Standard output Bottom to Middle Front Paper Path Straight through Face up Single Sheet Max 216 x 356mm 8 5 x 1...

Page 153: ...4 0 Yes Win 2000 Yes Win XP Yes WHQL for Printer Only Mac Yes Mac printer only Compatibility Linux No Printer GDI TWAIN Yes Driver PC FAX No PC fax is only available through PC Modem 9 CONSUMABLES Con...

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Page 155: ...APPENDIX...

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Page 157: ...APPENDIX APPENDIX 1 B173 Appendix APPENDIX BLOCK DIAGRAM B173X900 WMF...

Page 158: ...APPENDIX B173 2 APPENDIX CONNECTION DIAGRAM B173X901 WMF...

Page 159: ...lampere MB Megabyte dBM decibel milliwatt MHz Megahertz DC direct current NVRAM Nonvolatile random access memory DCU Diagnostic Control Unit OPC Organic Photo Conductor DPI Dot Per Inch PBA Printed Bo...

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