The Market Coalition

Can cell phones really give you brain tumors? While I may not be an expert on the subject, this question has undoubtedly plagued people’s minds since cell phones were invented.

Both sides of the argument make valid points, and it may be true that if you are susceptible to cancer (tumors) or have it in your gene pool you run a greater risk. Such a brain tumor is extremely rare, however. I believe in order to really examine how you might get a tumor from a mobile, we should first delve into a little electrical engineering knowledge, coupled with some biochemistry.

It has been known for some time that every electrical device produces EMI. EMI is electrical magnetic interference. It is also believed that the body has it’s own bio-electric field, and EMI pierces this field, contorting and twisting cells in the body. I may not be a doctor - but if this is true, would we all not have cancer? And, if someone did receive a brain tumor from using a mobile, would they not have sued mobile companies? I mean, honestly. In the United States of America, you can sue anyone for just about anything. And you usually win, too. People who got cancer from smoking cigarettes filed against tobacco companies and won, and websites like http://ash.org/sue-tobacco-companies.html encourage people to sue tobacco companies.

Because we are subjected to EMI everyday, and most of us are fine, this theory begs for research done on the subject. You may notice that if you place your cell phone next to your computer monitor and let it ring, your monitor will flicker (may not be the same for all phones). This is the electromagnetic radiation I speak of. While the spectrum may be broad enough to disrupt your monitor, it is highly unlikely it can pierce your skull and your brain. It is yet to be clinically, better yet scientifically proven that an electromagnetic radiation spectrum can disrupt higher or lower brain functions.

Did you know your regular phone displaces EMI as well? Perhaps not as much, but it does.

Maybe the whole idea of getting a brain tumor from a mobile is just a scare so people will give the mobile companies (or third party companies) money for a headset/headphones. It worked, didn’t it?

My opinion may be somewhat biased, but if you have heard of someone getting a brain tumor from a cell phone please let me know. This would change my views on the subject. (May God Forbid this happens to someone you know or love).

I am a young, aspiring computer engineer into Internet Marketing, hardware, software, web design, SEO and just about anything related to computers. Please come check out my growing PC forum at http://www.markspcforum.com

There are many ways to listen for important information that you can use in the future. Because most people own mobile phones, and because they are on the rise as a primary phone, it can be worth your while to learn to be a mobile phone spy. Private investigators and bounty hunters can use the techniques of a mobile phone spy in order to learn information for their clients and gather evidence. People can be quite unguarded while speaking on a cell phone; it can be the perfect way to hone your spying skills.

The effective mobile phone spy has the right equipment. Luckily, it is usually easier to get the right spy equipment in the cell phone department than it is in many other ways. Additionally, cell phone spy equipment is often less expensive than other equipment. If you are just getting your PI or bounty hunter business off the ground, starting out with some good cell phone bugging devices is a good way to start. It will help you get your feet wet and prove to clients that you have good equipment.

Another thing needed is to ensure that you do not miss important phone calls. For many a mobile phone spy, this ties right into having the right equipment. There are two different cell phone bugs that call you when a phone call is made. The Spy Matrix Cell Phone will give you a rig whenever a call is made, allowing you to listen in on the conversation without constantly checking to see if a call is being made. Likewise, basic cell phone bugs that share with the home phone can also call you whenever the phone line becomes active. This allows you to do more than one thing while waiting for the call.

Finally, the effective mobile phone spy has a means of recording the conversations she or he hears. This can be recording equipment attached to your end of the device, or it can be transmitted to a recording assembly (if you are using a phone that picks up signals near someone using a cell phone). It is always good to have the conversations available as evidence when you are a mobile phone spy.

(c) 2005 Copyright www.spyassociates.com. This article is about: Mobile Phone Spy

To learn more about Spy and Surveillance Products visit www.spyassociates.com Read other related articles at spyassociates.blogspot.com/

In our world today, the quality of a personal computer is often measured only by its processor speed, memory capacity, and hard drive space and for gamers, the quality of the video card. Sometimes, the computer monitor will grab some attention, especially if it has an LCD screen. Seldom, however, do we think of a computer by its power supply. And seldom do we give them an upgrade, even if we have upgraded each and every other computer component.

But when the power supply is damaged or stops working, we have to think about it, or we have no computer period. The only solution is a power supply replacement.

There are a lot of computer power supplies available in computer shops, so finding one should not be difficult. Replacing your power supply with a new unit should also be easy. The hard part is selecting the power supply that your computer needs. There are different kinds of power supplies and each has different specs. For your computer to work properly, it must be equipped with the right one.

There are two basic things to consider whenever you are buying a new power supply for your computer — power requirements and the power supply’s form factor.

Power Requirement

Modern power supplies have power outputs that range from 200 watts to 500 watts. Before purchasing a new power supply, you must first know the amount of power that each of your computer’s components need. These power requirements can usually be found on the labels of the components themselves. By adding up these figures, you’ll have a good estimate of the power output your new power supply should have.

As a general rule, never buy a power supply with output ratings that are lower than your estimates. Neither should you buy those that have too high a power rating, as most of this power would simply be wasted.

Form Factor

The standard form factor used on most PC power supplies today is the ATX-form factor. Not all power supplies, however, use this standard. If you have an older PC, it must be using a power supply in the AT-form factor. There are also less common form factors today like the TFX and BTX form factors. Before purchasing a new power supply, identify first what form factor would fit on your PC or else there’ll be no way for you to use it.

Choosing the right computer monitor can get tough these days, with so many different types and sizes to choose from, how could you possibly make an informed decision?

Well, we’re here to make choosing a computer monitor a little bit easier. Lets start out by defining some terms used in the computer monitor industry.

Refresh Rate - This is basically how fast the monitor can update the screen, the faster the better. With low refresh rates, monitors can get a noticeable flicker.

Resolution - This is how large of a screen the monitor can display. Higher resolutions are better, but most people don’t even use the highest resolution possible, unless they have a really large monitor.

Dot Pitch - This is basically a number value that determines the quality of the image displayed. Most computer monitors vary from .15 to .30, with the lowest number being the best.

Viewable Screen Size - This is how much of the screen you can actually see, which only really applies to CRT monitors, since you can always see the entire screen of an LCD computer monitor. Most CRT monitors lose at least half an inch, and up to an inch on some monitors. This means on a 17 inch CRT monitor, you can only see 16.5, or 16 inches, depending on the manufacturer.

The different types of computer monitors

CRT Computer Monitors - These are the regular tube style monitors, except that they now have flat fronts, which gets rid of most of the distortion around the edges.

The good - CRT monitors are extremely cheap, and refresh rates are fast enough for today’s hottest games.

The bad - Their size can be annoying, taking up most of your desk space, especially with large models.

LCD Computer Monitors - These are the flat panel monitors you see everywhere now.

The good - Extremely small size makes them very versatile as far as location is concerned.

The bad - They’re still quite a bit more expensive than CRT monitors, and the refresh rates aren’t great when it comes to hardcore computer gaming

Some things to note about all computer monitors is what type of inputs they have from the video card. All of them have the basic 14 pinned VGA input, but if your video card supports DVI, or S-Video, (higher quality input types) and you want to use these, you must make sure that the monitor also supports these. DVI and S-Video are superior to VGA, but usually cards & monitors with them cost slightly more.

——————————-
This article taken from Computer Discounts Guide - Computer Monitor Guide. View the website for more helpful guides.

Donny Duncan, the author of Computer Discounts Guide has been in the computer field for over thirteen years.

Computer memory is called Random Access Memory (RAM). The information stored in RAM can be accessed randomly, rather than sequentially. This means that data can be found in any location at the same rate of speed. Other storage media, such as CD-Rom and hard drives, must wait while the drive spins to the correct location before the data can be accessed.

Computer memory is simply a storage area for the program code and the data that program uses. Computer programs use RAM to write and retrieve information, allowing for fast data retrieval and manipulation.

How Much RAM is Enough?

Simply stated, the answer is, as much as possible. Keep in mind, though, once you’ve reached a certain upper limit, which is determined by the computer program(s) used, investment in more memory will see a diminished return.

Adding more memory is one of the best ways to maximize computer performance. If you compare 2 identical computer systems, the one with the most memory will over-all be the faster. More RAM allows the computer to place more program instructions into memory, relying less on the slower hard drive.

Think of 512 Megabytes (MB) as the base standard for a modern computer. With that you can multi-task (run several applications concurrently). For instance, you can check email and download MP3s, without noticeable sluggishness.

Some applications, however, are more memory-hungry than others. Graphics programs, for example, are notoriously greedy. Memory needs are further exagerated by the operating system used. Microsoft Windows is far more demanding than, say, Linux. Currently, most PCs use Windows, though.

Should you notice your computer slowing down, consider adding more memory. Before committing to that option, however, try de-fragmenting your hard drive with a utility (program) designed for that sole purpose. A fragmented hard drive is a common cause of stalled computer performance.

Types of RAM

Right now DDR SDRAM is the most popular memory module. DDR stands for Double Data Rate, which means that the memory can be accessed twice per clock-cycle. SDRAM, the acronym for Synchronous Data Random Access Memory, has been the standard for memory modules for nearly a decade.

To add memory to your computer, you must install modules with the correct contact layout. Before purchasing new memory, you must know which type your motherboard will accept. The most common form factors are 168 pin, 184 pin and 200 pin.

You’ll also need to know whether there are slots available on your motherboard. If all the slots are already in use, you’ll have to replace 1 or all of the current modules with higher capacity ones. If there is at least 1 free slot, you can simply buy a new memory module and insert it in the empty slot.

A word of caution: whereas some motherboards can accept either SDRAM or DDR SDRAM, the 2 types cannot be mixed. You must decide on 1 or the other. Check the motherboard manual first to determine which kind of memory your computer requires.

And finally, when you are ready to install your brand new memory module, make sure of 2 things: the power is off (for your safety) and you are electrically grounded (for your computer’s safety).

Ron King is a full-time researcher, writer, and web developer. Visit http://www.build-computer-now.com to learn more about this fascinating subject.

Copyright 2005 Ron King. This article may be reprinted if the resource box is left intact.

The WRT54G is a wireless router made by linksys. A few years ago linksys released its WRT54G firmware source code giving the open source community the ability to make its own versions.

Installing Linux on your wireless router has many benefits and in my opinion few risks. The one risk you do face is turning your router into a “Brick”. Now, this does seem like a big chance to take but there are many options if upgrade fails. Also, if you follow the installation instructions for each wrt54g firmware distribution you won’t have a problem.

Typical ways to “Brick” your wrt54g router are: trying to install your firmware upgrade over a wireless connection, interrupting the upgrade, and finally powering cycling during or five minutes after the upgrade.

General rules to follow are:
1. Always perform an upgrade from the original wrt54g linksys firmware not other firmware distributions.

2. Set your firmware back to factory defaults.
3. Don’t upgrade from a wireless connection.
4. Don’t turn off your router for about five minutes after the upgrade.
5. Insure your firmware is meant for your router, some firmware versions are meant for the WRT54GS (WRT54G with speed booster), and the regular wrt54g.

6. Follow the given instructions for each given firmware distribution.
7. Enable the Boot_wait function on your router. This option will give you the ability recover from a failed upgrade by using tftp to upload new firmware.

Linksys does have tools to that will let you recover from failed distributions. There are many different wrt54g firmware distrobutions to pick from. Some have specific purposes: like being used for a wireless hotspot or a radius server. Do your research before installing and always follow the exact installation instructions.

Sign up for the most popular wireless networking news letter on the internet. Receive the inside scoop on wireless technology for the home and work place at http://www.wirelessninja.com.

While most small businesses really do need to find a good local computer consulting business to take care of their computer problems, there are some computer problems that are simple enough for even a technophobe to handle. At Computer Consulting 101, we’ve found there’s one very simple piece of advice that often doesn’t get communicated to non-technical small business end users: When in doubt, reboot first.

Seriously, while it may sound tremendously simple, end users often overlook it during typical computer panic attacks.

Anytime you’re about to consider an issue a real IT support problem and call your computer consulting vendor, always reboot first.

First, exit out of whatever files and programs that you’re working on. Then, run through a Shutdown and Restart sequence to reboot your computer.

If you suspect your computer problem involves something hardware-related, such as with your network card, modem, mouse, keyboard or sound card, you should even go one step further, before calling your computer consulting experts.

Go to your Start menu. Next, shutdown your PC. Then turn the power off for a minute or so… if you’re computer didn’t power itself off on its own. Then finally power your PC back up again and see if the problem resolved itself on its own. Many times a simple reboot is all it takes.

The Bottom Line

While this advice probably sounds very basic, at Computer Consulting 101 we’ve found that a substantial percentage (as many as 10-20% of problems) of trouble calls for IT support become unnecessary after a reboot. And of course, because you probably pay every single time you pick up the phone, why not conserve your IT budget for those projects that can help your company drive more revenue, improve productivity, reduce overhead, and boost your bottom line. Remember, before you call a computer consulting professional, reboot first…. so you can conserve your computer consulting budget for those problems that really require expert assistance.

Copyright MMI-MMVI, Computer Consulting 101 Blog. All Worldwide Rights Reserved. {Attention Publishers: Live hyperlink in author resource box required for copyright compliance}

Joshua Feinberg of Computer Consulting 101 helps computer consultants get more steady, high-paying clients. Sign-up now for free access Joshua’s field-tested, proven Computer Consulting 101 strategies at ComputerConsulting101.blogspot.com

This article focuses on frequently asked questions by buyers of plasma and LCD televisions.

Q: Does the “plasma” in plasma televisions need to be recharged or replaced over time?

A: No. The plasma gases are sealed in individual cells when they are manufactured. There is no way to recharge or replace the gases. However, plasma TVs, when used normally, will last you many, many years (up to 20 years) so you don’t have to worry about the screen burning out for a long time.

Q: Are plasma and LCD TVs difficult to install?

A: While you may want to hire a professional electrician to help you with wiring if you are installing your plasma or LCD television on a wall, you can also easily place the television on a stand yourself and place it anywhere you like.

Q: Do plasma and LCD TVs give off radiation?

A: All electronic devices, including televisions, must comply with FDA guidelines (in the United States) and CSA guidelines (in Canada) on radiation emission before being permitted to be sold to the public. While there is radiation emission in the form of ultraviolet light, the amount is negligible and you are unlikely to be affected by it watching the television from normal distances.

Q: What are anamorphic widescreen DVD movies?

A: There are two common ways of recording wide format movies on a DVD: letterbox and anamorphic. Letterbox refers to a video played with horizontal black bars on the top and bottom of the picture. Anamorphic recordings are also commonly labeled “Enhanced for 16:9 TVs”. Anamorphic recordings have over 30% more vertical resolution than letterbox format and elimates or significantly reduces the black bars found in letterbox pictures in order to fit to the screen size of 16:9 televisions.

Q: Do LCD’s have a burn-in problem?

A: No. Unlike CRT and plasma TVs, liquid crystal displays do not use phosphor and thus have no problems with a still image becoming permanently stored on the screen. Instead, LCD TVs use a backlight on a colored, transluscent liquid crystal screen.

Q: Can I use a game console such as Sony Playstation 2, Nintendo Game Cube or Microsoft XBOX with my LCD TV?

A: Yes. If you intend to use a game console and/or watch standard TV broadcasts over cable, satellite or antenna, an LCD TV is a superior choice over plasma televisions. The repetitive image from games and unused black-filled borders will damage a plasma TV by burning a permanent image into the phosphor.

Q: Will leaving my LCD TV on cause the image to degrade?

A: No. Unlike plasma TV’s, this LCD TV does not exhibit aging over time. The brightness of the image remains the same because LCD televisions use a florescent backlight.

Q: Can I mount my LCD TV straight into drywall or plaster?

A: No, drywall or plaster alone will not offer enough support. A structural beam or stud must be used as the anchor for the wall mount.

(c) 2005 Philip Liu - All Worldwide Rights Reserved

Philip Liu is a freelance author and publisher currently based in New York City. Philip publishes regularly on his websites dealing with cell phone reviews and news and plasma, LCD TV reviews and news.

Used or refurbished electronics are better than new ones for some excellent reasons. Companies such as IBM, Dell, Compaq, HP, and Gateway are known for making high quality laptop computers. Each company is a reliable manufacturer of quality goods and is highly competitive in the market. Giving the customer exactly what they want, making top-notch products, and offering repairs in cases where the products are defective are a few options to be provided to the customer. Every company spends a lot to advertise their new product. However, when the product is refurbished they do not advertise it, thus saving that money.

Products being reconditioned must pass a thorough examination. After repairing any defect and sanitizing if required, the product is repackaged either by the original manufacturer or a reputable professional outside firm may perform the reconditioning, returning the products to like-new new condition. Every refurbished laptop sold must meet the original manufacturers standards and must maintain high quality standards. Each item is checked multiple times for proper working condition and quality. Reconditioned goods usually have a very low cost of return.

Lots of money can be saved by purchasing remanufactured goods. Savings can go up to 50%~60% of the original cost. A refurbished laptop computer will have the same technology and features as a brand new mobile computing device, except for the price. Refurbished laptops are also offered the best value in extended warranty and support programs. Buying refurbished computers or used laptops allow saving money and still owning a feature-rich, quality computer or laptop with a manufacturer’s warranty included.

Some discount computer stores excel in delivering quality, name brand refurbished laptop computers. They constantly have more used laptops, computers, monitors, and printers that have been refitted and approved for sale by manufacturers such as HP, Dell, Compaq, Gateway, IBM, and Sony.

It is suggested to also consider if the LAN card, CD Writer, DVD Player, DVD-CDRW (although these might depend on personal preference), 56K modem, IrDa (Infrared), and Bluetooth are available when choosing a cheap laptop, since they are usually provided with all the present laptops. Also, it is advised to always check the upgradeability of the laptop.

Discount Laptops provides detailed information about discount laptops, discount laptop batteries, and more. Discount Laptops is affiliated with Live Spy Cam.

Hewlett Packard’s LaserJet 4200 and the LaserJet 4300 series of printers were first released in November of 2002. They were both designed to replace the now discontinued Hewlett Packard 4100 LaserJet printer.

Based on a new print engine, the 4200 and 4300 series have increased print speeds of 35 ppm (pages per minute) for the 4200 and 45 ppm (pages per minute) for the 4300 with an improved first page out time of less than 9 seconds.

Wow, that is pretty fast. At a starting cost of about $1,000 for the base model 4200 and $1,399 for the base model 4300. These new printers are priced at the same cost as the Hewlett Packard 4100 LaserJet printer.

There are differences in the molding of the cartridges which do prevent them from being interchangeable. One notable difference is in the design of the toner hopper.

The toner hopper on the HP 4300 is larger and holds 1,050 grams of toner for an estimated page yield of. This will approximately perform 18,000 pages @ 5% coverage.

The smaller toner hopper on the HP 4200 holds only 690 grams of toner and yields approximately 12,000 pages @ 5% coverage. Another notable difference is in the waste section. The waste hopper of the HP 4300 is larger to hold the extra waste produced by the higher fill weight.

The HP 4200 waste hopper also has a fin sticking up on the left side of the hopper that prevents the cartridge from fitting into the HP 4300 LaserJet printer.

Due to the fact that the 4200 and the 4300 both use the same print engine, the components that make up the cartridges are the same.

The cartridge chips located on the top right side of the waste hopper however, are in indeed different. A slight difference in programming prevents one chip from being used on both cartridges, so it’s important to use the correct chip when remanufacturing the cartridge.

Though the chip is physically different than that of the HP 4100, the information that the chip contains is nearly the same.

A few additional items like First Installed Date and Last Date Used are one-stored chips. This information is displayed at the bottom of the Supplies Status Page.

Just like the HP 4100, 4200 and the 4300, all can be run with a spent chip or with no chip installed at all.

Several testing have shown that the chip can be run again in the printer that it was used in originally. Running the used chip causes a “Replace Cartridge” message and the loss of the toner low warning.

Usage of the chip in a machine other than the one it was previously running in will result in a “Non-HP Cartridge Detected” message and the loss of all the information on the Supplies Status Page.

While running the cartridge without the chip, it will result in a “10.10.00 Supplies Memory Error” when the cartridge is first installed.

After pressing the Select button a “Non-HP Cartridge Detected message will appear before the machine goes to ready. All the information stored in the chip will not be available and a “Warning” message is all you will find on the Supplies Status Page.

Here are you Step-by-Step “How-to-Remanufacture” the HP Q1338A/Q1339 Instructions:

Let’s get straight to the point, no beating around the bush during this lecture.

First, you will need the necessary Tools & Supplies Required:

Tools & Supplies Required:

•Diagonal Cutters (tool)
•Phillips Head Screwdriver (tool)
•Small Flat Blade Screwdriver (tool)
•Dremel Tool with Cutting Bit (tool)
•Needle nose Pliers (tool)
•Padding Powder (supply)
•Soft Lint Free Cloth (supply)
•Anhydrous Isopropyl Alcohol (supply)
•Swabs (supply)
•Toner (supply)
•Drum (supply)
•Expanding Foam (supply)
•Doctor Blade (supply)
•Wiper Blade (supply)

Here you will also be provided with the OEM (original equipment manufacturer) information:

HP 4200:

•Part Number: Q1338A
•OEM Gram Load: 690 grams
•Yield @ 5% coverage: 12,000 pages / min:35
•Resolution: 300/600/1200dpi (dots per inch)

HP 4300:

•Part Number: Q1339A
•OEM Gram Load: 1025 grams
•Yield @ 5% coverage: 18,000 pages / min:45
•Resolution: 300/600/1200dpi (dots per inch)

Below are your 53 easy steps to know how to remanufacture your HP 4200/4300 LaserJet Q1338A/Q1339A toner cartridges.

Step #1:

•Place the cartridge on the worktable with the drum facing upward and the drum shutter arm towards you.

Step #2:

•Using a small flat blade screwdriver, release the clip that holds the drum shutter arm to the cartridge.

Step #3:

•Pull the shutter arm from the drum shutter and slide the shutter arm from its positioning post.

Note: Do not lose the tension spring that fits inside the drum shutter arm. Place the tension spring back into the shutter arm.

Step #4:

•Open the drum shutter exposing the drum. The drum shutter is keyed on the non-contact side of the cartridge. Slide the shutter bar back until the bar can be removed from the cartridge end cap.

Step #5:

•Pull the drum shutter bar from the cartridge contact end cap. Then you want to set the drum shutter aside.

Step #6:

•Next, remove the two screws holding the cartridge cap to the cartridge.

Step #7:

•Using a flat blade screwdriver, pry the contact end cap away from the toner hopper breaking the three plastic welds holding the end cap to the toner hopper. Afterwards, remove the end caps.

Step #8:

•Using diagonal cutters cut the three plastic welds flush with the contact end cap.

Step #9:

•Simply rotate the cartridge 180 degrees. Carefully remove the four screws holding the gear housing end cap.

Step #10:

•While holding the opposite end of the cartridge, remove the gear assembly end cap from the cartridge. Then you want to separate the two sections and set the toner hopper aside.

Step #11:

•Remove the screw holding the drum axle. Then remove the drum axle.

Step #12:

•Lift the drum by the small gear and pull the drum from the bearing hub.

Step #13:

•Remove the PCR from the PCR saddles.

Note: If you are going to reuse the PCR clean the roller using a lint free cloth and water.

Step #14:

•In order to remove the wiper blades; pull the OEM sealing foam material away from the wiper blade.

Note: The OEM sealing foam material is sticky and is not easily removed.

Step #15:

Note: This step is only for the HP 4300. Using a Dremel with a cutting bit cut away the retaining wall that prevents the wiper blade from being removed.

Step #16:

•Remove the two screws holding the wiper blade. Then remove the blade.

Step #17:

•Dump the waste from the hopper. Clean the hopper using dry compressed air or a vacuum.

Step #18:

•Apply padding powder to the new wiper blade and place the blade onto the waste hopper. Install the two screws that hold the blade in place.

Step #19:

•You will now need to seal the area around the wiper blade using expanding foam along the edge of the blade and in the square holes on the ends.

Step #20:

•Clean the PCR saddles using a swab and alcohol.

Step #21:

•At this point, you want to apply new conductive grease to the black contact saddle. Install the cleaned PCR.

Step #22:

•Apply padding powder to the drum. Slide the drive gear into the bearing hub.

Step #23:

•Install the contact end plate.

Note: Make sure the contact plate sits flush with the end of the waste hopper.

Step #24:

•Install the screw that holds the contact plate in position.

Step #25:

•Place the waste hopper aside in a protected area out of the light.

Step #26:

•Remove the mag roller drive gear housing from the end of the toner hopper. Then remove he mag roller drive.

Step #27:

•Remove the screw that holds the mag roller end plate.

Step #28:

•Using needle nose pliers, simply remove the hinge pin from the mag roller end plate.

Step #29:

•Remove the mag roller tension spring.

Step #30:

•Pull the mag roller end plate from the toner hopper.

Note: Do not lose the bearing that sits inside the mag roller end plate.

Step #31:

•Lift the free end of the mag roller sliding the roller out of the mag roller end plate on the opposite side of the toner hopper.

Note: Do not lose the bearing that sits inside the mag roller end plate.

Step #32:

•Remove the mag roller bearings from the each end of the roller. Clean the mag roller using dry compressed air or vacuum, then using a lint free cloth and a mag roller cleaner. Clean the mag roller bearings and use a lint free cloth.

Step #33:

•Remove the two screws holding the doctor blade.

Step #34:

•Lift the plastic scrapers and mylar shims off each end of the doctor blade.

Step #35:

•Lift the doctor blade from the toner hopper. If you plan on using the doctor blade again, clean the doctor blade using dry compressed air or a vacuum, then using a lint free cloth and alcohol.

Step #36:

•Dump the old toner out of the toner hopper. Using dry compressed air or a vacuum, clean out the hopper.

Step #37:

•Fill the toner hopper with the correct amount of toner depending on the cartridge type you are building.

Step #38:

•Place the new or cleaned doctor blade onto the toner hopper. Place the mylar shims and the plastic scrapers on each end of the doctor blade. Install the two screws holding the blade in place.

Step #39:

•Slide the black mag roller bearing onto the contact end and the white bearing onto the drive gear end of the mag roller. Slide the mag roller contact hub into the mag roller bearing plate on the toner hopper.

Step #40:

•Align the mag roller bearing end plate to the toner hopper and slide the end plate onto the toner hopper.

Step #41:

•Install the mag roller tension spring and the screw into the mag roller bearing end plate.

Step #42:

•Install the hinge pin into the mag roller bearing plate.

Step #43:
•Slide the mag roller drive onto the mag roller.

Note: Make sure the two injection molding points on the mag roller drive gear face outward.

Step #44:

•Place the mag roller drive gear housing onto the end of the mag roller, making sure the keyed end of the magnet fits into the gear housing.

Step #45:

•Using a 3/32-drill bit, drill a hole next to the toner sensing contact on the cartridge contact end cap.

Step #46:

•Join the toner hopper and waste hopper together. Place the cartridge gear housing end cap onto the side of the cartridge. Install the four screws that hold the end cap in place.

Step #47:

•Place the contact end cap onto the end of the cartridge. Install the two screws that hold the end cap in place.

Step #48:

•You will now need to lock the contact end cap in place. To do this, drill a 1/16 hole through the contact end cap and through the toner sensor bar positioning post. The hole needs to be drilled approximately 1/8 from the end of the toner hopper and 1/8 from the end of the sloped section on the contact end cap.

Step #49:

•Now, install a 1/16 spring pin into the hole drilled in the bottom of the contact end cap.

Step #50:

•Install the keyed end of the drum shutter bar into the gear housing end cap.

Step #51:

•Install the non-keyed end of the drum shutter bar into the contact end cap.

Step #52:

•Slide the drum shutter arm onto the positioning post. Push the drum shutter arm into the drum shutter. Gently, slide and open the shutter to engage the tension spring.

Step #53a:

•We are almost done. Place one probe of an Ohmmeter on the toner sensor contact and place the other probe into the hole that was drilled next to the contact. Locate the sensor bar that comes out from the toner hopper through the hole drilled in the end cap, making sure you have a low resistance connection.

Note: If the contact is not made between the sensor bar and the
contact on the end plate, this will result in an error “54.1 Remove Sealing Tape” or if contact is lost during usage, a premature toner low can occur.

Step #53b:

•Test the cartridge.

Congratulations, you have successfully completed the process on how to remanufacture your own HP 4200/4300 series LaserJet toner cartridges.

Good luck and complete each cartridge as if it were your last. This information is provided to you for both educational use and to improve your knowledge in the technical area within the remanufacturing industry.

In description of, Joseph Mercado is known as The Internet Marketing Tyrant. He specializes in current studies on ink cartridges and how they connect within the consumable industry.

http://www.inksecrets.com