Samsung ML 2250 Istruzioni di installazione e manutenzione

SAMSUNG®ML 2250

CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

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SAMSUNG ML 2250 TONER CARTRIDGE

These images show different views of the cartridge, basically the 2250 series are a bit flatter than other

Samsungs.

These cartridges do not have a drum cover, and come new with a piece of heavy paper taped around the

cartridge. All new cartridges opened so far have shown some toner leakage on the drum that would have

shown on any prints.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

First released in July 2004, the Samsung ML-2250 printers are based on a 22ppm, 1200dpi engine.

These cartridges are very similar to the ML-1750, but there are differences. The main difference is that

some of the ML-1750 cartridges have a fuse to reset the printer. The ML-2250 cartridges use a series of dif-

ferent chips. The actual ML-2250 doesn’t use anything but all the rest so far use a special chip. A chart

below will list all the different variations.

REMANUFACTURING THE SAMSUNG ML-2250 TONER CARTRIDGE

By Mike Josiah

Model Yield OEM Part # Secondary # Chip? Typical Aftermarket

Toner Weight

Samsung ML2250, 2250M,

2251, 2251N, 2251NP, 2252,

2252W, 2255G 5000 ML-2250D5/XAA ML-2250D5/XAA N 120

Samsung SCX-4520, 4720,

4720F 3000 SXC4720D3/XAA SXC4720D3/XAA Y 75

5000 SXC4720D5/XAA SXC4720D5/XAA Y 120

Dell 1600n 3000 310-5416 KR-OK4671 Y 75

5000 310-5417 KR-OK4210 Y 120

Xerox Phaser 3150 3500 109R00746 ML2250D4/P31540 Y 75

5000 109R00747 ML2250D5/P31541 Y 120

Xerox WorkCentre

PE120/PE120i 3500 109R00601 SXC4720D4/PE120 Y 75

5000 109R00606 SXC4720D5/PE121 Y 120

REQUIRED TOOLS

•Toner approved vacuum

•A small common screw driver

•A Phillips head screwdriver

•Needle nose pliers

REQUIRED SUPPLIES

•Samsung 2250 Toner either 75g or 120g depending on yield

•Conductive Grease

•Drum lubricating powder

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

The standard cartridge (Samsung part# ML-2250D5/XAA) comes new with 120g toner, and is rated for

5,000 pages at 5% coverage. Other brands based on the 2250 have a low yield cartridge rated for 3,000

pages. They are also listed in the chart below. In some cases, the cartridges do not have the branded part

number on them. For those cases, we have listed the part numbers that are on the cartridge label (Samsung

manufacturing code):

1. Place the cartridge with the handle facing up. Remove the

five top cover screws.

2. On the front edge of the cartridge, there are two tabs. Press

these two tabs in, and lift the front edge of the cover up.

3. Next to the handle of the cartridge to the right and left, there

are two more plastic tabs. GENTLY press them in, and remove

the cover.

CAUTION: The upper half of the toner hopper is being removed.

If there is a lot of toner left in the hopper, it can dump out all

over! Vacuum the hopper clean.

4. With the toner hopper away from you, remove the four

screws on the left side end cap. Remove the end cap.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

5. Remove the four screws on the right side end cap. Remove the end cap.

6. Remove the PCR. 7. Also on the right side there is a series of gears under the end

cap. Make a note of the location of each gear, and remove

them.

Clean the PCR with your normal PCR cleaner.

WARNING: Do not clean the OEM PCR with alcohol, as this will

remove the conductive coating from the roller. If the PCR is an

aftermarket, follow the cleaning methods recommended by

the manufacturer. If the PCR is an OEM, we recommend it be

cleaned with your standard PCR cleaner.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

9. With the PCR cleaner assembly removed, the drum can eas-

ily be removed by lifting it out.

Clean out any remaining toner from the cartridge.

10. Press in on the bottom tab of the developer roller plate

(right gear side) to release it.

8. There are two screws on the PCR cleaner assembly. Remove them and gently pry the blade up. Be careful not to damage the

alignment pins. This PCR cleaner also has what can be considered a wiper blade. It is a very flimsy blade attached to the metal

bar. Wipe this blade down with a clean lint free cloth before re-installing.

It is very important that the PCR cleaner be cleaned. Vacuum or blow off any residual toner from the foam/felt.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

11. With a small common screwdriver, press the entire plate

towards the edge of the developer roller cavity, and lift up. The

plate should come loose.

12. Gently pry out the roller plate from the cartridge. The foam

seal, and possibly a plastic flat washer will come out with it. Be

careful not to damage the foam seal, or loose the flat washer.

13. Remove the developer roller. Be careful not to damage or

lose the flat washers on the roller.

14. It is highly recommended that the doctor blade be cleaned.

Failure to do so will cause streaking. The doctor blade can be

cleaned with out removing it. Dampen a cotton swab with alco-

hol, and clean the blade. Be careful not to press too hard and

damage the blade. If the blade has a heavy buildup of toner on

it, clean it with acetone, and then alcohol. Removing the blade

is difficult because of the foam seals attached. If the seals are

torn, the cartridge will leak. That is why we do not recommend

it. Once replacement doctor blades are available, they will

have to come with replacement foam.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

15. Replace the developer roller, and flat washers. 16. If no grease is left on the gears and gear shafts, or it is

contaminated with toner clean it all off. Replace it with white

lithium grease. Be sure to clean and grease the gear shafts,

and inside the gear.

17. Install the roller plate. Make sure the tab is locked in place. 18. Replace the roller plate and seven gears. Look carefully at

the picture of the gears. Each gear must fit in this exact way.

The gears labeled in order of installation.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

19. Install the new drum in place. 20. Install the PCR cleaner assembly.

21. Clean the conductive grease off the left side (non gear)

end cap and replace with fresh grease. Replace the end cap

and four screws.

22. Install the PCR. Make sure that the PCR gear is on the cor-

rect side and that the shaft is in the PCR holder.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

23. Install the right side end cap, and 4 screws. Make sure the

PCR fits correctly in its holder, and all the gears are aligned.

24. Fill the hopper with the appropriate amount of toner.

This can also be done through the fill plug, but the fill plug

tends to leak and will probably have to be sealed with silicon.

25. Replace the chip. Make sure the chip you install is the cor-

rect one for the machine it is to be installed in. New reset

boxes are now available that can change the personality of the

chip across the full line. This will enable you to test the car-

tridge in your test machine, and than change the chip to work

in your customer’s machine if different.

SAMSUNG ML 2250 •CARTRIDGE REMANUFACTURING INSTRUCTIONS

3232 West El Segundo Blvd., Hawthorne, California 90250 USA •Ph +1 424 675 3300 •Fx +1 424 675 3400 •[email protected] •www.uninetimaging.com

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