What does this Print out mean?

[konica7022]

Re: What does this Print out mean?

Found this on the Service Manual (See attachment)

Did you check the charge corona and PC drum negative contact? Maybe they are broken, misaligned or deformed.

the same IU unit w

the same IU works fine when installed in other machine

but i will try to check contacts

[konica7022]

Re: What does this Print out mean?

I took a color pattern Test Print as you can see the colors come out fine but there is some leakage or so in bleak as marked in the picture
1FD3FAC0.jpg

[REGSIS]

Re: What does this Print out mean?

that is just a picture taken from LG g5 to show you the HV 2 board i changed and took the prints (lying under the board)
scanning is fine
i checked the fusing unit for any marks that seems ok too

Only black IU give this issue weather you print or Copy

So, have you changed HV1 board or not?

P.S. just trying to help!

[konica7022]

Re: What does this Print out mean?

another 8F020672.jpg color photo print

[ricoh_rockstar]

Re: What does this Print out mean?

Maybe you can try changing the transfer rolller, or the black cartridge.

[konica7022]

Re: What does this Print out mean?

So, have you changed HV1 board or not?

P.S. just trying to help!

Your help is very much appreciated bro.... i changed the HV 2 unite that did not make any difference(i guess hv 2 is for color units)

i will go there tomorrow and change the HV 1 unit as well and then update

thanks

[konica7022]

Re: What does this Print out mean?

Maybe you can try changing the transfer roller, or the black cartridge.

transfer roller will effect the color output too, plus black toner was almost out i already changed a week ago and cyan toner as well

mostly it should be faulty HV 1 .. we shell find out tommarow

[REGSIS]

Re: What does this Print out mean?

Your help is very much appreciated bro.... i changed the HV 2 unite that did not make any difference(i guess hv 2 is for color units)

i will go there tomorrow and change the HV 1 unit as well and then update

thanks

I don't know which one is for what, but HV goes on drums, developing units (magnet rollers), transfer belt's transfer rollers and 2nd transfer roller. So HV2 could be for transfer and HV1 could be for drums (just guessing), anyway you should check both boars.

Solid black means only one thing: black drum is not charging. Since you eliminate drum as a cause of a failure. HV board(s) is next step.
Could also be the wire which connect HV board and black drum but it's less probable.

[ayeright]

Re: What does this Print out mean?

Not too familiar with the KM model numbers but isn't this the copier with seperate black drum and dev but complete IU's for the CMY? Had a couple of these years back where the locking screw/chassis thread was u/s and another with the shutter mechanism was damaged - both allow the dev unit to 'creep' towards the front door, partially or totally disconnecting the unit. Is there a pile of black toner lying around the drum/dev unit?

[AjitN]

Re: What does this Print out mean?

This could be toner issue as well.
Replace DV unit and install new OEM toner cartridge, Drum & Belt units are already replaced.
Fuser & PH will not give such problems unless toner is faulty.

Hope this helps

[konica7022]

Re: What does this Print out mean?

Changed HV 1 board
still no difference

[D_L_P]

Re: What does this Print out mean?

Effects only black
TB is ok
Same Black IU if swapped with other machine works fine

But every Good working black IU that i put in this machine (Bizhub c552) after some time start give black like this
[ATTACH=CONFIG]36917[/ATTACH]
Sky shoot

Seen this before. Completely remove drum/developer. Look inside toward the laser window and there will be a pile of toner on the rail. The window will be clean but the toner can pile up high enough on the frame to interfere with the laser. Gl

[REGSIS]

Re: What does this Print out mean?

Changed HV 1 board
still no difference

So you did the following:
- drum unit OK you tested it on another machine and drum from other machine on faulty one.
- checked developing unit for scatered toner/developer.
- replaced HV boards.

You mentioned that you tested black IU on another machine, have you tried only drum unit or dev unit also?

Try to check HV wires from HV boards to drum charger and developing unit for continuity.
Check HV contacts/springs for dirt or defect.

[konica7022]

Re: What does this Print out mean?

I gave up, scrapped the machine if anyone here wants it for the Monster Shredders then they can have it

[D_L_P]

Re: What does this Print out mean?

I gave up, scrapped the machine if anyone here wants it for the Monster Shredders then they can have it

Did you check the frame for a pile of toner? I've seen that before.