SAMSUNG SF-830

TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS
SAMSUNG SF 830 TONER CARTRIDGE

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2010 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
SAMSUNG SF-830 TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS
REMANUFACTURING THE SAMSUNG SF-830 TONER CARTRIDGE
By Mike Josiah and the Technical Staff at UniNet
First released in February 2002, the Samsung SF-830 is a 12 ppm fax engine that runs at 600 dpi. The Samsung toner cartridge SCX-5312D6 is rated for 7,500 pages at 4% coverage, and has a list price of $129.00 USD. This engine represents a change for Samsung in that the toner and drum have been split into two different cartridges. This article covers the toner cartridge only. The drum unit will be covered at a separate article. The toner cartridge itself is very easy to remanufacture. One of the error messages that these machines can display is invalid cartridge. Since these cartridges do not have a chip, this made us curious, and we started to look around. On the gear side of the cartridge (see above pictures) there is a small black plastic piece with two metal contacts. This piece can be pried out, and inside (on the Samsung SCX-5312D6 cartridge), there is a 30K ohm resistor. The Xerox cartridge uses a 12K ohm resistor. It appears that the machine looks for a certain resistance to determine the cartridge brand. That is how it determines if the cartridge is correct or not. If the wrong resistor is present, the Invalid cartridge message will display. This is a very easy and inexpensive way to build cartridges for other companies. There are no different plastic molds or anything else and the cartridges could even have the same production line. At the end of the line, the cartridges could be funneled off into the last section where these small encoding parts are installed. Only the very end of the line would be different. Much less expensive than retooling the production line for each manufacturer. The resistor does not go bad; it does not blow as a fuse would. It seems only to be there for identification purposes. The Samsung cartridge resistor has a color code of orange, black and gold. This code means the resistor has a value of 30K ohms at 5% tolerance. The Xerox cartridge resistor has a color code of brown, red, black and gold. This code means that the resistor has a value of 12K ohms at 1% tolerance. The SCX-5312 machines have Save functions for both toner and paper. The toner save mode is basically just like the Economode method used by other manufacturers. Only half the dots are printed using less toner. The paper save mode prints two pages on every sheet, so that less paper is used.
There is one interesting and somewhat strange thing about the SCX-5312 machines. The 5312 will still print after the toner is empty. This includes faxes as well. There is a window in the top of the cartridge which we assumed was the normal toner low backup for fax machines. The user manual however states that blank pages will print from both the printer and fax if the toner runs out.
CURRENT MACHINES BASED ON THE SF-830 ENGINE: Samsung SCX-5112 Samsung SCX-5312F Samsung SCX-5315F Samsung SCX-5115 Samsung SF-830 Samsung SF-835P Samsung Msys 830 Samsung Msys 835P All the Samsung machines so far use the SCX-5312D6 cartridge Xerox WorkCentre Pro 412 Xerox FaxCentre F12 Xerox WorkCentre M15 Xerox WorkCentre M15i Xerox WorkCentre 312 Xerox WorkCentre Pro 412 All the Xerox machines so far use the 106R584 cartridge

Machine and cartridge troubleshooting are covered at the end of this article.
SUPPLIES REQUIRED: 1. 250g dedicated toner for SF-830 2. White lithium grease
TOOLS REQUIRED: 1. Phillips head screwdriver 2. Small common screwdriver 3. Spring hook 4. Vacuum approved for toner
1. Remove the two screws located on the waste chamber. Remove the waste chamber. Be careful not to lose the gears.
2. Remove the gears from the waste chamber and open the spring loaded cover. Vacuum and blow out the waste chamber clean.
3. Remove the toner fill plug on the same side of the cartridge as the waste chamber. Dump the bulk of the remaining toner out of the cartridge. Vacuum/blow out the toner supply chamber clean. It is not necessary to get the cartridge completely clean now. As the developer roller needs to come out so the doctor blade can be cleaned, you will then have easy access to clean out the hopper.
4. Remove the waste chamber drive gear.
5. Remove the small developer roller screw and end cap.
6. With a spring hook, bend up the middle of the developer roller cover, and remove from the cartridge. The cover has a small plastic tab that locks it in place on each side.
7. Remove the three screws from the opposite side end cap.
8. Note the location and placement of the gears and remove them.
9. Remove the small internal end cap from the gear side, on the developer roller shaft. Although it is not necessary to remove this piece for the roller to come out; if it is not removed, it will bend, and most likely cause a leak. To remove it, press in on a small tab, and pry it out.
10. Lift the developer roller out of the cartridge. Clean out all the remaining toner from the hopper.
11. Clean the doctor blade. Unless new blades are available, we do not recommend that this blade be removed, as it is held in place by an adhesive foam seal under the blade. If the blade is pried up (not an easy thing to do) the blade will bend and become useless. Clean the blade with a cotton swab dampened with alcohol with the blade in place. Make sure that you do not drip any alcohol into the cartridge.

12. Install the developer roller.
13. Install the small internal end cap. Make sure it snaps in place.
14. Install the developer roller end cap, screw, and drive gear on the waste chamber side. Clean the old grease off the gears and replace with new. We recommend white lithium grease be used.
15. Install the gears, starting from left to right, and placing the inside gears first.
16. Install the gear end cap and three screws.
17. Install the developer roller cover in the same way it was removed. Do not bend it at too much of an angle, or it will stay bent.
18. Fill with 250g toner for SF-830.
19. Install the fill plug and check for leaks.
20. Install the waste chamber and two screws.
21. Make sure the waste chamber drive gear is meshed with the waste chamber gears.
CARTRIDGE TROUBLESHOOTING: There is really not much that can go wrong with these cartridges. It is still too early to tell yet, but most of the problems will probably come from either the developer roller or the doctor blade. Streaking, shading, backgrounding, etc., can all come from these two parts. We will write an update after we have more information.
MACHINE TROUBLESHOOTING: Drum warning: The drum cartridge is nearing the end of its life. Drum empty: No developer cartridge: The drum cartridge is finished. This means the drum cartridge is missing. Actual developer is not used in these machines. We are not sure why a no drum cartridge message was not used. That is why we included the drum messages here. A non-Samsung cartridge is installed, or the encoder piece is missing. See text at the beginning of this article.

Invalid cartridge:

SAMSUNG SF-830
DRUM CARTRIDGE REMANUFACTURING INSTRUCTIONS
SAMSUNG SF-830 DRUM CARTRIDGE

www.uninetimaging.com

2010 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
SAMSUNG SF-830 DRUM CARTRIDGE REMANUFACTURING INSTRUCTIONS
REMANUFACTURING THE SAMSUNG SF-830 DRUM CARTRIDGE
By Mike Josiah and the Technical Staff at UniNet First released in February 2002, the Samsung SF-830 is a 12ppm fax engine that runs at 600 dpi. The Samsung drum cartridge SCX-5312R2 is rated for 15,000 pages. These drum units are very similar in function to the Sharp Al-1000 in that they have a long plastic auger that moves the waste toner along into a small cavity at the end which in turn dumps into the waste chamber on the toner cartridge. As with the Al-1000 drum units, these cartridges are very easy to remanufacture. The OEM parts will all go another cycle, but not more than that. Check with your supplier to see if supplies are available.
CURRENT MACHINES BASED ON THE SF-830 ENGINE: Samsung SCX-5112 Samsung SCX-5312F Samsung SCX-5315F Samsung SCX-5115 Samsung SF-830 Samsung SF-835P Samsung Msys 830 Samsung Msys 835P All the Samsung machines so far use the SCX-5312R2 cartridge. Xerox WorkCentre Pro 412 Xerox FaxCentre F12 Xerox WorkCentre M15 Xerox WorkCentre M15i Xerox WorkCentre 312 Xerox WorkCentre Pro 412 All the Xerox machines with the exception of the M15 and M15i use the 113R506 cartridge. The M15 machines use the 113R663 cartridge. Both are rated for 15,000 pages. We were not able to obtain either of the Xerox cartridges at the time of this writing. We will update any differences or compatibility issues a later time.
Machine and cartridge troubleshooting are covered at the end of this article.
SUPPLIES REQUIRED 1. Replacement drum 2. Wiper blade 3. Conductive grease
TOOLS REQUIRED 1. Phillips head screwdriver 2. Small common screwdriver 3. Vacuum approved for toner
1. Remove the screw located on the waste chamber. Press in on the tab, and remove the waste chamber.
2. Remove the waste auger from the cartridge. The augers drive gear will come loose at this point. Remove the gear, and place aside (the gear is on the opposite side of the cartridge).
3. Vacuum the auger and foam seal clean. Vacuum and dump out any remaining bulk toner on the augers chamber.
4. Remove the screw on the drum axle, and the drum axle pin.
5. On the opposite side of the cartridge pry out the drum drive gear and axle pin from the drum. Be careful no to damage the teeth when removing the gear.

6. Remove the drum.

7. On the right side of the cartridge, remove the screw and contact insert. The insert can be removed by pressing in on the plastic tabs.
8. Remove the two screws from the PCR assembly.
9. Press in on the PCR shaft from the right side, and lift the assembly up from the left.
10. Remove the four screws from the wiper blade and remove the blade. Clean out any remaining toner.

11. When new wiper blades are available, the blade should be replaced. The OEM blades in out tests will last for one more cycle. We do not recommend that they be pushed farther than that. Install the new/cleaned wiper blade and four screws.
12. Clean the PCR with your normal cleaner used for Samsung cartridges. Wipe off the old conductive grease from the shaft. Re-install the PCR in the assembly. The longer bullet shaped end of the PCR is the right side.
13. Install the PCR assembly right side first.
14. Place a small amount of conductive grease on the tip of the PCR shaft. Clean all the old conductive grease from the contact plate, and replace it with new grease. Install it on the cartridge and install the screw.
15. Install the drum gear side to the right. As with the wiper blade, the OEM drum if in good shape should run another cycle. Further than that is not a good idea.
16. Clean the old conductive grease off the drum axle pin. Place new grease on the shaft, and install into the cartridge. Install the axle screw.
17. On the left side of the cartridge, install the drum drive gear and axle. Make sure the teeth of the gear mesh properly.
18. On the gear side, install the auger drive gear under the middle gear. Slide the auger keyed/foam seal side first. Make sure the keyed end fits into the keyed slot on the gear.
19. Install the waste chamber and screw.
CARTRIDGE TROUBLESHOOTING: No real problems have been noted so far.
REPETITIVE DEFECT TABLE: Drum 94mm PCR 39mm
MACHINE TROUBLESHOOTING: As with most Samsung machines, the error codes are in plain English. There are however, a few messages that can be confusing (different words are used for the same parts). They are as follows: Drum warning: The drum cartridge is nearing the end of its life Drum empty: The drum cartridge is finished. No developer cartridge: This means the Drum cartridge is missing. Actual developer is not used in these machines. Im not sure why they didnt use a no drum cartridge message but that is why we included the drum messages here. Invalid cartridge: A non-Samsung toner cartridge is installed, or the encoder piece is missing. See text at the beginning of the toner cartridge article.