Samsung SXC 4521f

[DAG COPIERS & COMPUTERS]

Hi to all out there, due to lack of manufacturer representation of a particular copier/machine brand, we technicians sometimes find ourselves 'crossing boundaries' into other copier territories.
I have been looking at a samsung sxc 4521f. It can PRINT very well from a computer through a USB cable without any problem, clear copies. However the problem is when u try to COPY either through the ADF or copyboard glass, the copies come with a wide black band across it, this is towards leading edge of the paper or sometimes towards trailing edge. it happens on all copies. Even when u SCAN document to the computer u can see the faulty image on the computer screen ( soft copy).
I did troubleshoot the equipment and concluded that either the CIS UNIT or the RIBBON cable (both in the SCANNER UNIT ) must be faulty.
TWO BIG PROBLEMS: 1) The scanner unit seems NOT to be made for repair, BUT to be replaced as a whole; it is nearly impossible to access the CIS UNIT within it, even merely to check or clean it. Try opening it if u think I am joking.
2)From where and how can i get this samsung spares? m/c not represented in this country. Iam stuck. Any help will be appreciated. Black cat what do u say?

[JustManuals]

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Paul@justmanuals.com

[blackcat4866]

I say:

Yes it's not made to disassemble. Yes its probably intended to be replaced as a scanner assembly.

The real question is is your band in the main-scan or sub-scan direction? If it's main scan, it's most likely the ribbon cable or PBA Main Controller. If it's sub-scan, it's probably the CIS or the PBA Main Controller.

So ... effectively you have two expensive choices with equal likelihood: scanner assembly or PBA Main Controller. For those of us that were dealers this is a little easier to diagnose. Often these cheap units were abandoned due to the cost of the repairs, so there is a ready supply of scrap parts. This is not a model that I've seen in the US, so I can't give you any more specifics.

So what will happen is that you will prepare a quote for $200 USD in parts + 1 hour labor, that has a 50/50 chance of being correct, and either the customer will pay the diagnostic deposit, or they'll just abandon it. Now you'll have a parts machine (if you ever see one again).

Oh, and try www.samsungparts.com =^..^=

[DAG COPIERS & COMPUTERS]

Thank u blackcat for that excellent highlights: Your reply answered my question in detail, leaving no stone unturned. I will get to the customer and take up the issue with them, backing it with u r post as a reference point, and leave the decision to repair or not to repair with them. thanks also for showing us the 'samsung website', we shall use it.
Thank u Paul too, for the info about the availability of the samsung service manuals purchasable at u r website;manuals4you.com. I'll get back to you.
WISH YOU ALL HAPPY EASTER HOLIDAYS.

[DAG COPIERS & COMPUTERS]

Hi blackcat, forgot to answer your question. T

[DAG COPIERS & COMPUTERS]

The black band across the copies is in the Main scan direction (vertical scan), and as u said it is most likely the Ribbon cable or the PBA. Actually the other end of the ribbon cable is directly connected to the main controller pcb.

[blackcat4866]

Happy Easter!

=^..^=

[elsab]

you can order the CIS FFC cable, a flat silver cable connecting CIS and main board, and it can be carefully replaced.

[elsab]

pretty sure its the FFC cable having problem, i've encounter this copy quality problem before, it's common to workcenter pe220.

[DAG COPIERS & COMPUTERS]

Thanks elsab, could u by chance be having the part no.of the FFC cable for this particular model so that you share with me?, I don,t have the parts catalog. Thank you in advance.