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1. 2 Primary charging 3 Laser beam exposure Latent image formation Shown is the complete image formation process uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Primary charging roller Primary charging bias In the first stage light from the pre exposure LED strikes the drum to remove any residual charges from the drum s surface Then the Primary Charge Roller PCR places a uniform negative DC voltage on the OPC drum surface The amount of the negative DC voltage placed on the drum is controlled by the printer s intensity setting uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INS2. Sar o Rs QA ae 5 Ss eee Photosensitive drum Primary transfer disengagement solenoid a se N lt All colors are engaged gt a colors are engag i Frimary transfer roller os Ue lt Only black is engaged gt YMC primary transfer roller slide plate These printers can print in full color or in black only modes To print in the black only mode the printer disengages the developer rollers in the cyan magenta and yellow cartridges This process also takes place with the primary transfer rollers and the ITB belt uninet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS RD sensor Pattern of toner PRINTER CALIBRATION At the start of all this is the cartridge detection process toner level detection and then the calibration cycle The printer will calibrate whenever the printer is turned on within 15 minutes when a new toner cartridge is installed and after 48 hours of run time Calibration consists of a solid block and halftone of each color being printed
3. Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 14 The amber film assembly is held in place with double sided tape If this is not sticking or a new wiper blade is being used replace the tape Replace the film assembly 15 Clean the PCR with your preferred cleaner and install in the cartridge with the PCR holders UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Make sure you lock the locking arms in place 16 Install the drum short hub side onto the long drum ground 17 Install the end cap and two screws pin Place the waste chamber aside uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distributi
4. assembly 11 Remove the two screws from the wiper blade Slide the razor knife along the back edge of the blade to release it from the glue Remove the wiper blade Clean out all the waste toner from the chamber Try not to get any toner on the wiper blade seal if possible uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 12 Clean the felt seals on each end of the wiper blade If the wiper blade glue has toner on it clean it off with alcohol and a foam swab If it does not become sticky again it needs to be removed and a good silicone caulk used to seal the blade off GE 100 Silicone and Phenoseal are two good brands for this 13 Install the new wiper blade and two screws If you removed the wiper blade glue seal the back edge of the blade with the silicone now www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information
5. have a separate waste bottle to collect the waste toner from the ITB belt and use chips that s need to be replaced each cycle The color cartridges and the high yield Black have a larger shoulder on the toner hopper UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS The major difference between the CP4525 cartridges and the high yield cartridges in this series is the plastic housing shoulder and the drum The contact hub of the new CM4540 drum is larger with the inner hub that houses the drum axle pin stronger and more recessed The older CP4525 drum hub design had a tendency to allow the drum axle pin to move out of the hub slightly when large runs were printing causing print defects This new design seems to be keeping the drum axle pin firmly in place PRINTERS BASED ON THE CM4540 ENGINE HP Color LaserJet Enterprise CM4540 MFP HP Color LaserJet Enterprise CM4540f MFP HP Color LaserJet Enterprise CM4540fskm MFP CARTRIDGES USED IN THESE MACHINES CE260A Black 8 500 pages 159 99 list CE264X Black high yield 17 000pa
6. inner gear end cap and two screws chemicals to clean this A lint free cloth works fine www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 41 Install the gears in the order shown If you installed a seal 42 Install the remaining gears in the order shown slide the seal end through the take up gear and wrap the loose tail tight on the roller 43 Install the outer gear end cap and screw www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 44 Place the triple gear on the developer roller shaft and fit into the spring assembly on the end cap Install the opposite side end cap and install the screw 45 Place the two ha
7. side lift up on the black lever Lift the two halves apart T On the waste chamber remove the two screws from the drum gear end cap Press in on the tab as shown and remove the end cap There is no need to remove the opposite side end cap www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 8 Remove the drum 9 Remove the PCR by lifting up on the black and white PCR locking arms Remove the PCR assembly 10 To remove the wiper blade the amber film assembly needs to be removed Slide a razor knife under the plastic mounting bar as shown UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Remove the
8. the drum by the developing section or supply chamber which contains the toner particles The development stage is actually made up of two steps toner charging and the actual development In the toner charging stage the toner stirring blade turns inside the hopper As it turns friction causes a negative potential to develop on the toner In addition a foam feed roller brings the toner to the developer roller and also places a negative charge on the toner These two charges help ensure a uniform charge on the toner Once the toner is properly charged the toner will coat the developer roller The toner is also held onto and attracted to the developer roller by another negative DC bias voltage This voltage is controlled by the printer s intensity setting and causes either more or less toner to be attracted by the developer roller This in turn will either increase or decrease the print density The amount of toner on the developer roller is controlled by the doctor blade which uses pressure to keep the amount of toner on the roller constant uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com
9. G INSTRUCTIONS REPETITIVE DEFECT CHART NOTE The HP service manual is less than helpful on repetitive defects with their current chart The first description column shows HP s description We have added what we know in the second description column which is based on the older HP CP4025 service manual and our tests Distance HP Description Our Description 27 0 mm Print cartridge Primary charge roller 32 0 mm Print cartridge Developer roller sleeve 44 0 mm Transfer unit Secondary transfer unit 48 0 mm Print cartridge 51 0 mm Transfer roller Primary transfer roller 55 0 mm Print engine 63 0 mm Transfer unit Secondary transfer backing roller 76 0 mm Print cartridge OPC drum 76 0 mm Fuser Fuser sleeve 80 0 mm Fuser Fuser pressure roller 96 0 mm Print engine 101 0 mm Print engine UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com
10. HP COLOR LASERJET ENTERPRISE CM4540 TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS HP COLOR LASERJET ENTERPRISE CM4540 TONER CARTRIDGE uniNnet www uninetimaging com ae ee sedis ng Inc eh Lona ame ie rtwork are property of their respec re dans t brand n entioned a peel sees compatibility o k UniNet Imaging doe nt downloaded infor Una ea zed sale eo ih a Ae a Orie pera spichibied For additio ieee ontact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS REMANUFACTURING THE HP COLOR LASERJET ENTERPRISE CM4540 SERIES TONER CARTRIDGES By Mike Josiah and the Technical Staff at UniNet The CM4540 series of multi function color laser printers are based on a 42 ppm black and color 600 x 600 DPI engine 3600 DPI with RET resolution enhancement technology The 4540 cartridges are an all in one type cartridge that consists of the toner Supply drum and waste chamber Like a few of the other newer high volume HP color laser printers the cartridges in this series are orientated so that the drum faces up not down when placed in the printer Because of this machine layout we will take a moment and run through the printer theory before we get started The cartridge is basically a modified HP CP4525 cartridge In fact the CE260A works in both series as does the waste collection bottle They all have a toner seal and a snap on drum cover across the bottom to protect the drum These printers
11. HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Doctor blade Photosensitive drum As the laser exposed areas of the OPC drum approach the developer roller the toner particles are attracted to the drum s surface due to the opposite voltage potentials of the toner and laser exposed areas of the OPC drum Photosensitive drum The fourth stage is the transfer stage This is where there are some large differences from monochrome printers and also from other color lasers In the primary transfer stage the transfer roller which is located directly opposite each OPC drum places a positive DC bias charge on the back of the ITB or Image Transfer Belt Each toner cartridge has a separate transfer charge roller The image is transferred from the drum directly to the ITB This process is repeated for each color cartridge in the following order Yellow Magenta Cyan and Black At the same time the paper is moving between the secondary transfer roller and the ITB As the ITB passes the secondary transfer roller the positive charge is picked up and draws the negatively charged toner off the belt and onto the paper Note that this entire process is upside down from most previous HP engines The ITB and transfer rollers are on top of the OPC drum not underneath it UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned ar
12. KING TEST PRINTS Configuration Page 1 Scroll to and touch the Administration button 2 Open the following menus Reports Configuration Status Pages Configuration Page 3 Touch the Print button 4 Print Quality TEST PAGES 5 Scroll to and touch the Administration button 6 Scroll to and touch the Troubleshooting button 7 Touch the Print Quality Pages button 8 Touch the PQ Troubleshooting Pages button 9 Touch the Print button 10 Follow the instructions on the pages that print out Diagnostics Page 1 Scroll to and touch the Administration button 2 Scroll to and touch the Troubleshooting button 3 Touch the Print Quality Pages button 4 Touch the Diagnostics Page button 5 Touch the Print button 6 Follow the instructions on the pages that print out Cleaning Page 1 From the Home screen touch the device Maintenance Button 2 Open the following menus Calibrate Cleaning Cleaning Page 3 Touch the Print button 4 The cleaning process will take several minutes uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURIN
13. TRUCTIONS Laser beam In the second stage a dual laser beam is fired onto a rotating mirror called the scanner As the mirror rotates the beams are reflected into a set of focusing lenses The beams then strike the drums surface reducing the negative charge and leaving a latent electrostatic image on the drum The areas where the lasers did not strike the drum will retain the higher negative charge While some previous printers had one scanner unit with four lasers these machines have two separate laser scanner units one for Black and Cyan and one for Magenta and Yellow Dual lasers are used to allow faster print speeds uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Photosensitive drum Y Photosensitive drum M BD sensor Yellow laser Magenta laser A _ Sa Laser unit E A P Protective glass D OF or re _ x Soo Z So D O a a O s WO Scanner mirror O j ge Lu Lu D Z gt S 2 5 Rio gt sa m nO The third or developing stage is where the toner is developed on
14. e reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 34 Install the feed roller and rubber bushing 35 Install the feed roller felt washers 36 Press the developer roller felt seal back in place Make sure it fits under the retaining blade If needed clean the adhesive with alcohol and a foam swab www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Y Rh aa sot tet fal Bb iv titt Wey hy by O J 37 Use the appropriate shims to gap the blade and install the 38 Clean the contacts and replace the conductive grease on doctor blade and two screws Make sure the sticky seals on the inner contact end cap Install the inner contact end cap either rend of the blade seal correctly If the material is no and screw longer sticky clean it with alcohol or replace it with a small amount of silicon ig h 39 Install the cleaned developer roller Do not use any 40 Install the
15. e intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Secondary transfer opposed roller Secondary transfer roller Secondary transfer bias Secondary transfer opposed roller Static charge eliminator Secondary transfer roller The paper separates from the ITB belt as the belt turns back down to start the process again The static charge on the back of the paper is decreased with static charge eliminator This helps stabilize the paper feed and also prevents toner flares Spots under low temperature and low humidity conditions uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Fuser sleeve Fuser heater a Paper Pressure roller In the fifth stage the image is then fused onto the paper by the fuser assembly The fuser assembly is c
16. entioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Cleaning blade Photosensitive drum OPC DRUM CLEANING The drum is cleaned after the image is transferred to the paper by the wiper blade This part is fairly standard the wiper blade scrapes the toner off the drum and the recovery blade guides it into the waste chamber uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS O DCeontroller o controller vd I gt L Developing disengagement motor L SR11 V Developing disengagement sensor Photosensitive drum F Developing disengagement cam Developing unit is disengaged Developing unit is engaged L DC controller EEE EEE L m Fuser motor lt All colors are disengaged gt i SRO Primary transfer I C disengagement sensor SLI B
17. ges 280 90 list CFO31A Cyan 12 500 pages 350 86 list CF033A Magenta 12 500 pages 350 86 list CF032A Yellow 12 500 pages 350 86 list CE265A Toner collection unit 18 00 list Pricing in U S American Dollars current as of September 2012 uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS High voltage power supplyT L Secondary aa transfer roller DC controller es F EE ee High voltage power supply D L a 2 ET EE A A l HP CP4520 COLOR PRINTING THEORY The color toner cartridge printing process happens in a series of stages or steps For the purpose of this article we will call them stages Shown above is a basic layout of the cartridges and how they relate to one another and the printer Note that while this is still a single pass system the layout is completely different from any previous Canon HP machines The laser units are on the bottom the cartridges are at an angle and the ITB is on top 4 Media path lt Direction of drum rotation Drum cleaning
18. lves together contact side first On the gear side press the lever in place On the contact side snap the lock up into the end cap www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS g 46 Install the two pins 47 Install the spring Large pin goes to the label or gear side of the cartridge 49 Remove and replace the chip If the new replacement chip is loose in the slot Close off the top edges with small amounts of hot glue 48 Remove the chip by cutting the plastic off the edges of both side of the chip www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 50 Install the drum cover on to the cartridge TA
19. omprised of the upper heating assembly and lower pressure roller The lower pressure roller presses the page up into the upper heating assembly which then melts the toner into the paper This heating assembly consists of a flexible sleeve with a ceramic heating coil inside This type of fuser affords instant on fusing with little to no wait time and low power consumption uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS Residual toner feed screw Cleaning blade Cleaning blade ITB cleaner im p NS A ey af ITB motor m m i Residual toner feed screw Residual toner gt feed motor Residual toner feed unit Residual toner full sensor Toner collection box ITB CLEANING The ITB is cleaned by the ITB cleaning blade The ITB wiper blade scrapes off the residual toner and an auger moves the toner to the toner collection box UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names m
20. on of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 18 On the supply chamber remove the screw from the gear 19 Press in on the tab and remove the end cap side end cap 20 On the center gear press on the locking tab to release the gear Remove all the gears as shown except for the mixing blade gear and the sealing strip gear The mixing blade gear is attached to the mixing blade inside the hopper and is very difficult to re attach properly www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 21 Remove the two screws on the contact side Press in on the tab and remove the end cap 22 Remove the three developer roller drive gears www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduc
21. scribed in the following steps First remove the spring from the label side of the cartridge 2 With a razor knife carefully shave the plastic from the heads of the hinge pins on both sides of the cartridge www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 3 On the label side only drill a shallow hole on each side of the pin as shown 4 Remove the pins with flush cutting wire cutters The smaller pin fits on the contact side of the cartridge the long pin on the label or gear side www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 5 On the gear side press in on the plastic locking mechanism 6 On the opposite
22. tion or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 23 On the gear side inner end cap remove the two screws 24 Remove the developer roller and end cap sovene a 4 A be my Ev Veen 25 Remove the single screw and contact side inner end cap uniNnet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 26 Remove the two screws from the doctor blade and start to lift the blade up There is glue on either rend of the blade As you lift the blade up slice the glue away from the blade with the razor knife 2 On the right side of the chamber lift up the felt developer 28 Remove the white felt washers from both sides of the feed roller seal Lift it from the front side and lay it over the back roller www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibili
23. to the ITB As the printed areas get to the top of the belt a sensor will detect them measure the density and adjust the printer accordingly All of the calibration time settings are user controllable Taking test prints cartridge troubleshooting as well as minor printer troubleshooting will be covered at the end of this article REQUIRED TOOLS 1 Toner approved vacuum 2 A small screwdriver common style 3 A Phillips head screwdriver 4 Needle nose pliers 5 Spring hook SUPPLIES REQUIRED Toner for use in the HP CM4540 New replacement chip New dedicated long life drum for use in the CM4540 New wiper blade New toner feed roller optional New PCR optional New doctor blade optional Drum cover Lint free cloths 10 Conductive grease OMONODORWNHE UniNet www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 1 The pins in these cartridges are stepped In other words the outside is thicker than the inside To remove the pins you must carefully shave the plastic away from the pins The procedure is de
24. ty only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 29 Pry out the rubber feed roller bushing from the right side 30 Remove the feed roller www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sale reproduction or distribution of this article is prohibited For additional support please contact techsupport uninetimaging com HP M4540 SERIES TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS 31 Clean out the remaining toner and fill with the correct color 32 When a seal is available install the seal onto the seal rails of dedicated toner for use in CM4540 Pull the release tape off one inch at a time and press the seal in place as you go 33 Remove the seal port and slide the seal pull tab through the slot Install the seal port www uninetimaging com 2012 UniNet Imaging Inc All trademark names and artwork are property of their respective owners Product brand names mentioned are intended to show compatibility only UniNet Imaging does not warrant downloaded information Unauthorized sal
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