MX-2600

Generally speaking, if you install the LSU in the same position marking as the original LSU, you will be fine.

I've always used method 2 in many of the MX service manuals for adjusting LSU position, mainly because its more of a hardware adjustment, rather than mucking around with measurements.

The quick way of adjusting LSU skew, is run 50-22, then check the LSU skew numbers on the right hand side of the screen. Any of the CMY values which are over +-4.0 will give a 'NG' value. You will need to adjust the 'clicker' screw for that particular color, in the hole under the drums/devs. Its the large silver screw. Turn it one 'click' for each number it is past +-4.0. Run 50-22 again until you get CMY all saying OK, instead of NG. Once you have done that, you may need to run the page centering using 50-28. After that, you're done.

[vlad_robas]

The new unit come in today and i just fit it in. Print 64-5 looks okay. I did looked at what i supposed to do ''ADJ 6'' but it's a bit unclear for me, partly becouse of english and partly becouse there ar 2 way's and becouse i never done that. I will try to put it in the exact place like the other one. How could i be sure that the unit is 100% in place it suposed to be?

[vlad_robas]

Okay i did placed an order for it today.

No mate, its an internal laser error, an error which shows as the LSU is firing during internal testing.

Order & fit a new LSU. Problem solved for sure.

[vlad_robas]

I thougt that it might be the cable since the error is the same with or without ...
I will ask for a price.

Just order the whole LSU. You won't regret it. I know its expensive, but maybe a warranty claim for you??? A new LSU will fix your errors.

The E7-22 error is an internal code inside the LSU. Having the LSU harness unplugged like you have in the picture is only the incoming data. You will still get the code as the laser detection in the LSU is not working.

[vlad_robas]

07112010015.jpg

Sometime it take's longer before the code appear's. I did disconected the cables and opened the unit but that didn't helped.
I did notice that if i leave the CN5 unpluged (picture) the error that apear's on the screen (E7-22) is the same i find that a little strange don't u?
This a costing thing to replace.
Aren't any part's to replace inside the LSU unit? like that LD PWB or something?

[vlad_robas]

the result was:

LSU TESTRESULT NG: CL Laser light emitting abnormality (C,M,Y)

Just out of curiosity, run sim 61-01 for LSU test. Its weird that you were able to get 1 page out before trouble coding.

Still think you need a new LSU though.

[vlad_robas]

I found some new fact's in the mean while: this morning he didn't started like should on the first power-on press only at second press of the inside button and then it printed the job - one page 250 grams - and few minute's later it did trow the error.
Thank you wazza, again, for your prompt replies and hepful info.

E7-20, 21, 22, 23 on a MX2600/3100/4100/5000 series machine is always going to be a new LSU.

The Venus & C-Dragons have had firmware fixes for E7-20 appearing when printing onto heavy paper, but there is no such fix for your machine.

Of course, firstly check/reseat all cabling to the LSU & harness to PCU board.

[vlad_robas]

New problem e7-22

It worked relative ok till last nigh when i did cut off power then moved about 2-3 meter's then back but i didn't power it up.
This morning i went directly to client's on the field and i didn't make it back to the office but my coleague's want to print with it and power it up and surprize E7-22 i have read what it mean's but from your experience what should i first look? I should have it up and running by tommorow if i don't have to replace the LSU unit in which case ...ufff

Thats alot better!

Its hard to tell the true print quality from the scan, as its a low res version of the original, but it looks quite good Vlad.

Make sure the print density settings in system settings are all on default. If your consumables are all OK and the 64-01 & 64-05 print tests look OK, there is not much more you can do. You can adjust color density manually after that. Process control will keep things within check.

[vlad_robas]

I remember i did some calibration afther instalation ...
This is the result afther 46-74 and the improving is visible but i think it should be better

The first 2 pages look more like a reflection from fluroescent lights above the copier. You can also tell that, because you are not getting that same print issue affecting the print self-test pages (pages 3 & 4 of your scans).

As for sim 64-05 print out, the machine desperately needs a colour calibration. Thats it.
Run a 46-74 over the machine once firmware has been updated. It will fix those problems of colors finishing early on the shading scale.

You dont have a problem with the PTC unit or secondary transfer/PTC board with those scan samples. The machine needs to be re-calibrated.... big time!