THIS ISSUE - Parts Now
Contents
1. THIS SSUE TECHNICAL TROUBLE SHOOTING COMMON ERRORS 50 SERVICE We devote much of this month s SERVICE Topay to the second most common printer problem the 50 SERVICE We covered the number one error the 13 PAPER J AM last month The fusing assembly uses a com bination of heat and pressure to fuse or fix the toner to the paper It must operate within a fair ly narrow temperature range too cool and the toner will not be com pletely fused too hot and the paper ui dc controller fuser temperature system may be scorched For this reason its temperature is closely controlled and monitored A 50 SERVICE error means that this system has broken down either the fuser tem perature is out of bounds or the monitoring circuits are no longer working properly The diagram below shows the fuser temperature system for SX and NX engine printers but the concept is the same for most laser printers Other laser printers incor signal to turn AC power module on Or off The DC CONTROLLER instructs the AC POWER MODULE to supply power or to cease supplying power to the HEAT LAMP depending on infor mation received from a thermostat in the fuser This thermostat is called the THERMISTOR In case something goes wrong there is the THERMOSWITCH Placed in fuser the same circuitry as the lamp the thermoswitch simply conducts electricity until a certain high temperature2. formatter 4 formatter 4 plus formatter 4MP formatter 5 paper feed assy 4 fusing assy 4 output assy 4 dc controller 4 860 paper control pca 4 hvps 4 RG5 0531 000R RG5 0877 000R RG5 0879 000R RG5 0886 000R RG5 0966 000R RG5 0969 000R RG5 1933 000R RG5 2189 000R RG5 2195 000R power supply 4 4 plus 5 input assy 4 plus fusing assy 4 plus 1260 paper output assy 4 plus dc controller 4 plus 5 hv power supply 4 plus 5 power supply 4 4 plus 5 output assy 5 paper input repair 5 AX ENGINE REPAIR 5L amp COMPATIBLES RG5 2000 000R RG5 2023 000R 3942 67902R scanner dc controller formatter BX ENGINE REPAIR 4V amp COMPATIBLES C3143 67901R RG5 1435 000R RG5 1557 000R RH3 2150 000R RG5 1559 000R RG5 1584 000R RG5 2044 000R formatter high voltage power supply fusing assy power supply dc controller paper guide hvps assy NX ENGINE REPAIR 115 4 amp COMPATIBLES 33491 60143R 33491 60160R C2009 69001R C2061A R RG5 0025 000R RG5 0046 000R RG5 0067 000R RG5 0076 000R RG5 0085 000R RG5 0089 000R RG5 0095 000R RG5 0381 000R RG5 0842 000R RG5 0161 000R RG5 0166 000R RG5 0168 000R RG5 0170 000R RG5 0627 000R formatter older formatter newer formatter 45 duplex assy input parts fusing assy 1111 delivery cov assy hvps 1115 des 11191 dc controller 11151 IIISi job offset assy dc controller 4Si reg assy IIISi ac power modu
3. a limited warranty and does not cover minor cosmetic defects such as blemishes scratches and color defects Upon arrival inspect the package for damage and refuse it if you feel the printer may be damaged as a result of shipping If you accept the printer and later discover apparent ship ping damage a claim should be made with the carrier Your first step to make a warranty claim would be to call our tech support and give a description so we can take the appropriate steps to get you back up and running RESPONSIBILITY FOR DAMAGE PARTS NOW Inc is not responsible for damages incurred in transit The shipping car rier is responsible for such damage E PARTS NOW Inc does not issue for products damaged due to shipping PARTS NOW Inc will place a new order for the cus tomer while the carrier is processing the cus tomer s claim m HEADQUARTERS 3517 W Beltline Hwy Madison WI 53713 608 276 8688 800 886 6688 FAX 608 276 9593 SOUTHEAST BRANCH 1085 SW 15th Ave 5 Beach FL 33444 561 279 9280 800 RG1 0939 FAX 561 279 9122 URL www partsnowinc com Wholesale new amp refurbished printer parts New amp Used Printers Repairs for all major components Authorized Warranty Repairs Range of Lexmark 1 800 886 6688 n Solutions Bulk Rate U S Postage PAID Madison WI Permit No 367 SERVICE TODAY 3517 W Beltline Hwy Madison WI 53
4. is achieved Thus if the lamp gets stuck on the temperature information thermoswitch would force the lamp off m amt ac power module power to heating element TECHNICAL porate the AC module into other assemblies For example LX BX EX and WX printers combine the AC power module and DC power supply renaming it low voltage power supply or just power supply The diagram shows the three key parts of the fuser temperature sys tem the fuser the AC power mod ule and the DC controller A 50 SERVICE error can always be traced to a malfunction of one or more of these three elements The main function of the AC power module is to apply power to the fuser s heating ele ment Of course this power cannot be applied all the time or the fuser would just keep getting hot ter and hotter This is where the DC controller comes in it continuously moni tors the fuser temperature via the thermistor and keeps that tempera ture within allowable limits by telling the AC power module to turn on or off as needed 50 SERVICE AND RESISTANCE CHECKS The most common cause of a 50 error is a defective fuser To know for certain it is necessary to either ohm out the fuser or replace it with a known good fuser and run test prints The most common fuser defect is an open heating element it either burns out like a light bulb in most fusers it IS a light bulb or it gets broken w
5. reading using the sub lamp contact 53 1 and a thermoswitch con tact should read 3 ohms 47 10 4 Two Lamp Test You can check both lamps WITHOUT the ther moswitch by going across the main and sub lamp contacts This should read 5 ohms 47 10 The sub lamp is bad if you get a reading from the thermoswitch Main Lamp Test but not from Tests 3 and 4 The main lamp is bad if you get a reading from the Thermoswitch Sub L amp Test but not from Tests 2 and 4 The Thermoswitch is bad if the Two Lamp Test gives you a reading and Tests 2 and 3 do not RESISTANCE CHECK GUIDE MAIN LAMP amp THERMOSWITCH 3 00 P CTS EE SUB LAMP amp THERMOSWITCH 3 00 WX RESISTANCE TEST POINTS THERMISTOR ii mr 4 LF J THERM OSWITCH 3 00 ELECTRICALLY THE SAME AC INPUT FOR LAMP mes THERMOSWITCH 20 4019 4029 RESISTANCE TEST POINTS 4039 4049 180K 280KQ RESISTANCE TEST POINTS TOR THERMISTOR THERMISTOR LFR 2 60 LAMP amp THERMOSWITCH THERMISTOR 260KQ e UFR 2 60 LAMP amp THERMOSWITCH OPTRA RESISTANCE TEST POINTS THERMISTOR 180K to 280 LAMP amp THERMOSWITCH 2 00 EX RESISTANCE TEST POINTS AC INPUT FOR LAMP amp TEST POINTS FOR THERMOSWITCH THERMISTOR 3 50 180K to 290K0 THERMOSWITCH TS1 HEAT LAMP sees THERMOSWITCH 7524 dE ii ev LX RESISTANCE TEST POINTS THERMIST
6. slip This is the customer s responsibility E B RMA DURATION The customer s RMA is valid only for 30 cal endar days from the date issued C RESTRICTIONS Product returns must be 1 repairable no alterations or physical damage 2 have a valid RMA and 3 be an exact equivalent of the part shipped out and 4 be received by PARTS NOW prior to the RMA expiration date of 30 calendar days from the date issued E D RETURN PROCESS When PARTS NOW Inc receives the product return PARTS NOW Inc will inspect it to confirm that it is 1 the correct part and 2 eligible for product return If not then PARTS NOW Inc will have the option of 1 returning it with an explanation or 2 providing no refund for items received after 30 days Bi E REIMBURSEMENT Upon inspection and acceptance of returned product PARTS NOW Inc will credit the account of the open account customer If the customer is non open account PARTS NOW Inc will send a refund check WARRANTY RETURNS PROPER RETURNS 1 Product being returned to PARTS NOW Inc due to defect or PARTS NOW Inc error must be returned with a A valid RMA number legible on outside of packaging b Copy of the Original Invoice c Original packaging if new d Reason for return INTERNAL WARRANTY PROCEDURE 1 PARTS NOW Inc will at the company s option select one of the following a Replace the product b Repair the product c Credit the invoi
7. 713 608 276 8688 Fax 608 276 9593 800 886 6688 SOUTHEAST 800 RG1 0939 URL www partsnowinc com LEY pri eS Printed on recycled paper
8. OR 230K to 280K INPUT FOR LAMP amp THERMOSWITCH 2 00 NX RESISTANCE TEST POINTS TEST POINTS FOR THERMISTOR 180K to 290KO THERMOSWITCH TS1 HEAT LAMP AC INPUT FOR LAMP amp THERMOSWITCH 3 50 BX RESISTANCE TEST POINTS AC INPUT FOR LAMP amp THERMISTOR M 1 1 to 1 70 00 SX RESISTANCE TEST POINTS THERMISTOR 230 280K Q LAMP amp THERM OSWITCH 1 5 0 COLOR COLOR 5 RESISTANCE TEST POINTS HEATING ELEMENT amp THERMOSWITCH 290 2 f cf AY THERMISTOR 440 AX RESISTANCE TEST POINTS AC INPUT FOR ROLLER amp THERMOSWITCH 290 THERMISTOR 440KQ VX RESISTANCE TEST POINTS AC CIRCUIT HEATING ELEMENT 150 THERMISTOR 420KQ HP 4000 RESISTANCE TEST POINTS HEATING ELEMENT 1 amp THERMOSWITCH 20 00 HEATING ELEMENT 2 amp THERMOSWITCH 20 00 COMMON CONNECTION FOR BOTH ELEMENTS E THERMISTOR 1 5MQ 5000 RESISTANCE TEST POINTS PARTS NOW WESTERN DISTRIBUTION CENTER PARTS NOW announces the open bution center is in Fresno Calif ing of its West Coast Distribution The new center means more Center to better serve its customers venience and savings for West Coast Western states will have faster customers says Dan Olszewski cheaper access to the PARTS NOW PARTS NOW president and COO 5 5 million inventory The new distri PART NOW CUSTOMER SATISFACTION IN TOP 2 5 Accord
9. ced amount of the prod uct if not replaceable due to lack of inventory B C RESTOCKING FEE 1 The restocking fee is 2096 or 25 00 whichever is greater a In cases not involving PARTS NOW Inc error b If non defective product is not returned within 5 days Bi D MISCELLANEOUS Any product returned without an RMA number will be refused 2 Manuals printheads and special order items are not returnable 3 PARTS NOW Inc is not responsible for damages incurred in transit 4 Damaged product is the shipping carrier s responsibility 5 Customer is responsible for return ship ping 6 All product must be returned within 30 days PARTS NOW WARRANTY PERIOD E A NEW PRODUCT Original Manufacturer Warranty B FACTORY REFURBISHED PRODUCT Original Manufacturer Warranty C REFURBISHED PRODUCT 1 Fusing Assemblies a 12 pages minute or slower 6 months 1 SX LX EX EX PX AX most Lexmark printers b 13 page minute or faster 3 months 1 NX BX WX HP 4000 HP 5000 2 Mechanical Assemblies 3 months a Input Assy Output Assy Delivery Assy etc 3 Electronics 3 months 1 05 DC Controllers Power Supplies etc 4 Printers a As is Guaranteed working on arrival b PARTS NOW Inc Refurbished 90 days The printer you receive should be mechani cally sound and operational We will replace or repair at our discretion the part or parts that fail during the 90 day warranty period This is
10. e III formatter Bob Allport Pete Caro Gonzo Casas Ext 158 Ext 130 Ext 109 Ed Abel Ext 136 Beau Davis Bruce Davis Roy Divine Virgil Grenia Ext 111 Ext 110 Ext 166 Ext 182 Barney Gugel Darrel Hayner Traci Hertzler Teresa Kelly Ext 180 FI Ext 304 Ext 116 Ext 179 d Joe Lalley Rick Maharajh Mike Meinholz Sheila Power Ext 162 Fl Ext 309 Ext 172 Ext 118 Cal Seelig Paul Seibold Terry Sipple Mike Tilley Ext 102 Ext 145 Ext 305 Ext 142 CALL 800 886 6688 Brenda Barbian SE 800 RG1 0939 Ext 185 Dan Cassidy Ext 113 Dave Gress Ext 151 Tim Kohl Ext 117 Rich Russell Ext 157 Ken Wagner Ext 134 Doug Damon Ext 140 Vito Griseta Ext 165 Julie Krauth Ext 122 Kas Schafer Ext 159 Dan Wilson Ext 127 Joey Zingale Ext 184 MANAGEMENT David Reinke CEO Dan Olszewski President amp COO Wayne Tougas Southeast Branch Mgr Roxanne Wenzel Sales Manager Richard J ordan Sales Manager PARTS NOW POLICY RETURNS EXCHANGES EXCHANGES THE RMA MUST ACCOMPANY RETURNS An RMA number assigned by a sales represen tative must be put on the outside and inside of your returned product package for adequate identification Product returned without a valid RMAZ will be refused at the PARTS NOW Inc dock Place the enclosed label on the outside of the package and print the on the pack ing
11. film heating element AND WX ONLY black or tan belt SX also check cleaning wand 2 Pressure roller rubber end covers amp drive release cam 3 Toner build up on parts NX also check drive release cam 4 Paper detection flag not AX and top covers 5 Delivery roller not AX WX also check cover and posi 6 Gears not AX tion of pressure relief arms TECHNICAL OHMING OUT WX PRINTERS HP LASERJET 8000 59 amp MOPIER The WX fuser has more pins than most fusers but most of these are non functional It also has a second heat lamp This sub lamp is similar in appearance and wattage but is set up differently and has different connec tors It heats the ends of the upper roller while the main lamp heats the center of the roller This helps short en warm up time 1 Thermistor Test Checking the thermistor is the same as with other fusers Check across the two pins indicated J 50 pins 2 and 3 At room temperature the range is 150 290K Ohms 2 Thermoswitch Main Lamp Test Distinguishing lamp from ther moswitch can be done without disas sembly of the fuser The two ther moswitch contacts J 51 pins 4 and 5 go to the same point on the ther moswitch and are the same electrical ly Going from either thermoswitch contact to the main lamp contact 52 pin 1 should create a reading of ohms 10 This would mean that BOTH the main lamp and ther moswitch are good 3 Thermoswitch Sub Lamp Test A
12. hen the fuser is dropped or otherwise handled roughly Along with the heating ele ment the thermistor and thermal switch need to be checked for fail ure as these three parts form a cir cuit The thermistor measures the temperature of the fuser the ther mal switch opens the circuit if the fuser overheats Resistance tests can be performed to see if the py heating element or other fuser part has failed This involves touching the leads of an ohmmeter to the AC circuit and the thermistor on the fusing assem bl y Most defective fusers will fail one or more of these ohmmeter tests For safety reasons these checks must be done with the fusing assembly out of the printer with no power applied Page seven has dia grams which show the location and expected readings for AC circuits of various printers AC POWER MODULE AND ALTERNATIVES If it is not the fuser it is almost always the AC power module Swap the power module with a known good part Note that removing the fuser and measuring the voltage out put of the AC module is not a reli Powe Hon CABLES NRO ER js TECHNICAL 50 SERVICE CONTINUED able test often a defective AC may have fixed it In general wait module will have the proper voltage 15 to 20 minutes the appropriate with no fuser in the machine but service manual will provide the spe cannot maintain that voltage with cific recommendation the fuser in place Ra
13. ing to Canon Computer Wercheik commends Eddie Systems Inc PARTS NOW ranked in Karlslyst who heads the warranty the top 2 5 percent on warranty repair department at PARTS NOW customer satisfaction and ranked first PARTS NOW is a warranty repair locally center for CCSI handling the Bubble Based on May CSI Customer Jet FaxPhone and MultiPass lines Satisfaction Index data PARTS NOW had a ranking of number 4 out of the Central Region s 177 accounts says Mark Wercheik regional service man ager for CCSI PARTS NOW also ranked number 1 in May as being the best ASF Authorized Service Facility in Madison Wis IN HOUSE REPAIR RAPID TURN AROUND HP LASERJ ETS amp COMPATIBLES HP 4000 REPAIR RG5 2661 000R RG5 3693 000R C4118 37908R fusing assembly engine cont board formatter WX ENGINE REPAIR 5 amp COMPATIBLES C3168 67902R RG5 1852 000R RG5 1863 000R RG5 1880 000R RG5 1844 000R formatter paper pickup assy fusing assy pickup assy dc controller VX ENGINE REPAIR 5P 6P amp COMPATIBLES 3151 67901 RG5 1700 000R RG5 2800 000R RG5 1798 000R RG5 2826 000R formatter 5P fusing assy 5P fusing assy 6P dc controller 5P dc controller 6P EX ENGINE REPAIR 4 4 PLUS 5 amp COMPATIBLES C2002 67901R 2038 67901R C2041 67901R 3919 67901 RG5 0451 000R RG5 0454 000R RG5 0456 000R RG5 0511 000R RG5 1078 000R RG5 0512 000R RG5 0513 000R
14. le dc power supply 45i hvps 451 dc controller 4Si LX ENGINE REPAIR IIP PLUS amp COMPATI BLES C2008 69001R 33471 60004R 33471 60007R 33481 60001R RG1 1591 000R RG1 1597 000R RG1 1604 000R RG1 1782 000R RG1 1788 000R RG1 1792 000R RG1 1909 000R formatter IIP plus formatter IIP dual 1 assy formatter dc controller HV power supply density pca power supply fusing assembly pickup assy power supply SX ENGINE REPAIR amp COMPATIBLES 33446 60001R 33449 60001R 33451 67901R 33497 67901R RG1 0710 000R RG1 0718 000R RG1 0931 000R RG1 0932 000R RG1 0936 000R RG1 0939 000R RG1 0939 000GR RG1 0945 000R RG1 0951 000R RG1 1278 000R RG1 1310 2007R RG1 1326 000R RG1 1340 000R RG1 1394 000R RG1 1944 000R RG1 1969 000R RG1 1970 000R RG1 1975 000R RG1 2007 000R RG1 2702 000R RG1 2706 000R RG9 0205 000R RG9 0319 000R RG9 0749 000R 564 6212 000R formatter IID formatter 11 formatter III IID formatter dc controller 11 paper control pca paper pickup assy registration assy high voltage power supply fusing assy fusing assy gold delivery assy dc power supply dc controller dc power supply IID IID reg assy IID IID lower pickup assy dc power supply dc controller dc controller III dc controller dc power supply power supply power supply II dc controller III ac power module 11 ac power module III ac power modul
15. re alternate causes of 50 errors include the DC controller and bad cables VERY IMPORTANT NOTE The DC controller contains a timing circuit that remembers the 50 error for a peri od of 10 20 minutes even with the power off This safety feature 2 gives an heated fuser time to cool down This means that if you replace any item other than the DC controller and turn the machine on too soon you will still get a 50 error even though you Service Today Past Service Today articles Editor Robert Reinke are available at the PARTS NOW website WWW partsnowinc com Director David Reinke With Assistance this month from Steve Geishirt and Dennis Kosterman TECHNICAL LASER ET INSPECTIONS WITH FUSER REMOVED With the fusing assembly out of LX also check for damage to the printer it is a good time to frame and damage to electrical inspect parts for wear and tear contacts on the fusing assembly These parts are indicated below they are available from PARTS Au dac end cover ae ration guide and position of pres NOW sure relief arms SA AS WX DG EK amp BX BX also check end covers and 1 Upper roller metal separation claws 2 Pressure roller rubber 3 Toner build up on parts 4 Paper detection flag and sensor 5 Roller end cap 6 Leaf spring 7 Gears 8 Delivery roller FOR SX NX AND WX ONLY AX PX VX HP 4000 amp HP 5000 9 Separation claws FOR SX NX 1 Fixing
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