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Skyjuice

Cleaning the SamSung ML 1610 Laser Printer

30 September 2008

Laser Printers are getting cheaper. They work well and need very little maintenance

except for changing the toner cartridge. At times, there may be a need to clean the

lens of the Laser Scanning Unit (LSU). This article tells how to clean this lens

which was not covered properly in the Samsung’s printer manuals or servicing

guide.

FAQ

What is this LSU unit?

It is the “printer head” of the printer. Instead of emitting ink, the LSU emits a laser

beam, directing it at the drum of the toner cartridge so that electrostatic charge can

be transferred onto the paper to form a “temporary glue” to pick up the carbons as

the paper passes through the drum.

Why need to clean the unit?

Sometimes, when we move our printer around with toner cartridge still inside,

some toner powder could have fallen on to the lens of the LSU. This will weaken

the laser beam and prevent electrostatic charge being transferred onto the paper;as a result, the printing either got missing characters or blank vertical lines.

Where is this LSU unit located?

This is where the manual or the servicing guide wasn't very useful. The unit is

hidden from view and it is located on top of the toner cartridge. A proper tool such

as the dentist's mirror would have to used to see the lens. The lens is protected by a

rectangular plastic window of about 100 mm x 10 mm. (Picture shows the LSU with

the printer cover removed)

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How to clean this lens?

As the lens is made of plastic material, it may not be advisable to use any form of

cleaning chemical that would attack the plastic. The recommendation is just to use

a cotton wool without any chemical.

There are 2 ways to do this cleaning job:-

a) Without stripping the printer unit

1. Switch off the power of the printer

2. Remove the toner cartridge

3. From the front cover, use finger to feel the rectangular window that protects the

lens; paying attention not to touch the lens

4. Use a clean cotton wool and insert it into the window. Gently clean the lens with

horizontal movement. (picture shown with top cover removed)

5. Change the cotton wool if necessary until no more carbon or dirt is seen on the

cotton wool.

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b) Removal of printer cover to clean the lens

This is for those who are mechanically savvy . To remove the cover,

a) Switch off the printer and remove the printer cable and the power cable

b) Remove the front cover from its hinges and unscrew the 2 screws in the front of

the top cover;

c) Turn the printer around to the back cover and unscrew the 4 screws that

attached the top cover and the back cover to the printer

d) Remove the back cover gently to expose the electronic board. Try not to touch

the electronic board

e) Turn the printer around with the electronic board facing towards you and use

your left and right hand fingers to slightly ply open the bottom part of the top cover

where the 2 front screws were located; at the same time, try to gently lift the top

cover off the printer. The top cover should come off from the printer in one piece

f) Locate the LSU and clean the lens with cotton wools

g) Reassemble the covers in reverse order.





Posted by Sky Juice at 05:56

Reference

Exploded view and part list

18 comments:

Anonymous said...

Hi!

I use a Samsung ML-1640. I just bought it recently (Probaly a month back) and

already it reports an LSU error. Does that mean that this particular model is

faulty?

Also, I tried to clean the LSU unit. At least I think it's the LSU unit. It was a tube

that was of a colour slightly darker than neon green that I saw when I took out

the toner.

However, the printer is still not working. I am at a loss and I've tried searching

online forums but to no avail! Perhaps I could get some help from you? Should I

replace the toner?

Please reply me at [email protected]

Thank you very much!!!

Kaye

20 October 2008 06:40

Sky Juice said...

If the Laser Scan Unit(LSU) is faulty, it would have to be replaced. The

electronic board could also be faulty. These parts are not only difficult to get butalso expensive. Since the printer is new, have it replaced.

The LSU is hidden from view. One would have to dismantle the cover. The "neon

green tube" that you have seen in the toner is probably the drum, part of the

toner unit. Replacement of toner would not help.

20 October 2008 09:52

Gerardtm said...

It is easy to open the laser unit as well for even more thorough cleaning: there

are 4 clips that are easy to pry open from below. The instructions saved me

purchasing a new printer. Thanks !

20 December 2009 14:17

suma said...

I had cleaned LSU unit but still printer is not working. How much it will cost to

replace LSU unit or repair of electric board. is it better to buy new printer rather

than repairing of the older one. reply on [email protected]

21 August 2011 22:32

Anonymous said...

With the help of your instructions, I managed to disassemble my ml-1610

enough to be able to rotate the takeup rubber back into its correct position.

The problem occurred as a result of my pulling out jammed paper through the

printer's front opening.

Now it's back to working condition.





Many thanks!

7 February 2012 11:13

Anonymous said...

Thanks for taking the effort to write this tutorial.

It was very helpful!

12 February 2012 13:04

paulbisente said...

Thank you so much for this wonderful tutorial.

24 May 2012 00:27

Anonymous said...

Thanks for writing this information on your site.

Also see my webpage: Clean and Green Washroom Products

16 June 2012 06:07

Anonymous said...

Hi nice info.can you provide more info like which part use for which purpose.

My same printer giving online error.red light blink.paper just feed half.which u

can easily emove by hand .can you tell what will be problem.empty toner?how to

know toner is empty. 91-8108730063 [email protected]

2 August 2012 05:59

Bob said...

Wow thanks! I managed to fix my printer with your guidelines, so this saves me

buying a new one!

4 September 2012 06:40

print head said...

Great post ! I am really thankful to you for sharing such a nice information

about cleaning the samsung ML 1610 laser printer. Keep posting information

like this.

Printhead911

6 September 2012 12:02

Anonymous said...

Thank you, this was very helpful for me disassembling the ML1610. The lens

cleaning (cotton bud only)greatly improved the quality of prints. Furthermore

the internal cleaning (with a brush) and the lubricating of all gearwheels lead to

no more paper jams :) Now it works just like new!

Cheers12 December 2012 03:45

Sweet Fairy said...

Great post with so nice details. Can i print Plastic cards by any laser printer?

21 December 2012 22:49

Sky Juice said...

Sweet Fairy

The Samsung ML 1600 is just an ordinary laser printer and not a plastic card

printer. It does not have dye sublimation and/or thermal transfer printing

capabilities.

22 December 2012 17:11





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plastic cards printing said...

Thanks for an insightful post. These comments are really helpful.. I found a lot

of useful tips from this post.

11 January 2013 01:39

Anonymous said...

Te lo agardezco!

Gracias!!!

24 January 2013 18:34

Anonymous said...

Thanks for this guide!

Additionally - our laser lens was dirty on the inside. not the accessible front side.

As someone said above, it's easy to open the laser unit and clean the inside of

the lens too. We had bought a new original toner and had a white line down the

page. After cleaning our printer is now as good as new. Thank you.

5 May 2013 11:34

Jacintha Sujatha said...

thanks for your explanation...just sorted out my ml-1610....

26 July 2013 13:27

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