Question about Copystar CS-2050 All-In-One Printer

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Error code C4000 For a Copystar CS2050

What does Error code C4000 For a Copystar CS2050 mean?

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It's mean's laser problem need to change it

Posted on Sep 01, 2010


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Code c4000

C4000 Polygon motor synchronization problem
The polygon motor does not reach the
stable speed within 15 s of the START
signal turning on.
Poor contact in the
polygon motor connector
Reinsert the connector. Also check for continuity
within the connector cable. If none,
remedy or replace the cable.
Defective polygon
Replace the LSU.
Defective engine
Replace the engine PCB and check for cor

Jul 10, 2013 | Copystar CS-2050 All-In-One Printer

1 Answer

Error c4000

This error code means laser unit has the problem.polygon motor inside the laser unit has problem. am sure if you change laser unit machine will work.

Jan 14, 2013 | Kyocera Office Equipment & Supplies

1 Answer


laser unit is under cover where copies exit, remove cover unplug laser unit and then remove 4 screws holding it down. replace unit
and scerws and plug in unit and replace cover and all is well

Oct 12, 2012 | Copystar CS-2050 All-In-One Printer

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Large document stuck in memory CS2050 - I just need to clear the memory - is there a sequence of keys to push

you can rest your machine to deffault sitting by using u020 or u021 but in my opinion i dont like do run those programs

Apr 01, 2010 | Copystar CS-2050 All-In-One Printer

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I have a copy Start CS 1650 with the error code C-400 any Ideas

there is no C400 code, but there is a C4000 and its a pretty common code on these boxes. it's pointing to your laser unit. definetly not easy to get to. you will have to have laser unit replaced or sometimes i have had luck pulling out laser, pulling polygon mirror out and lubricating the shaft. that only works about 50-60% of time however and if you are paying a tech to do this work, you may just want to replace it as it is fairly time consuming to get laser out.


Dec 21, 2009 | Copystar CS-1650 All-In-One Laser Printer

1 Answer

Copystar 2221, C30 code

Hello sir; I believe your error code should be C030, if that's correct that 's mean main board is bad , it not worthy to repaire it, go buy a new machine.

Mar 06, 2009 | Copystar Office Equipment & Supplies

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Copier says to Call for service. Code on copier is C4000

cannot clear this message until you have the laser unit repaired or replaced. then code will clear when powered up.


Dec 02, 2008 | Copystar CS-2050 All-In-One Printer

1 Answer

Copystar CS2050

You have System settings button on the copier control panel,Press it. Navigate through menu and find date and time settings. if password is requested, try code 2000.

Feb 25, 2008 | Copystar CS-2030 Copier

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