IRC 5180 Magenta becomes one side light

[digitalbrain]

I am attaching image of 4 full magenta prints out taken in IRC 5180. One side image is getting lighter. If start again the first page is solid , one side light in the second more in the third and so on, continous at a semi solid level

Other colors dont show this problem. Is there any service mode adjustment I can try ?

I checked swapping the Drum unit but same problem continous. Any ideas ??

Will it be due to Laser unit ?? I am not very familiar with this model

Thanks in advance

DB

[Dis]

had try change drum unit? maybe can found it where's problem from.
just a suggest, hope help.....^.^

[zoraldinho]

Definitely drum.

[bipc]

if you changed drum unit and problem stayed then try to check developing unit and toner inlet by the hopper, if not enough toner get trough the hopper then the developer will do first copy well but will start showing lack of enough input on the following ones, at the end of a set of 6 or 7 copies check right away the developer cylinder to see how the toner is spread on it, hope it helps

[teckat]

is that image > from Paper Feed direction or Cross Feed ??
is that the trail edge or side edge issue ?

Remove ITB / remove ITB Belt > check position of Magenta Primary Roller>
make sure it is sitting ok> make sure the black holders on either side of roller are not cracked >

are u using HEAVY PAPER ??? if so Drum Drive Assembly could be bad

[mrfixit51]

Looks like a Transfer roller 1 issue, try replacing the ITB transfer roller for the Magenta station.

[digitalbrain]

The print is taken in A4 long edge feed and it is side edge problem (rear side of the machine)

The customer sometimes takes solid color images on thick paper (180 GSM). But this problem is there even on normal paper

I will check the ITB assembly and come back with the result today

thank you all for your inputs

DB

[teckat]

The print is taken in A4 long edge feed and it is side edge problem (rear side of the machine)

The customer sometimes takes solid color images on thick paper (180 GSM). But this problem is there even on normal paper

I will check the ITB assembly and come back with the result today

thank you all for your inputs

DB

Ok !! side image issue Magenta only= Primary M Roller Position in ITB

[digitalbrain]

Problem solved after replacing Magenta Laser unit. It was a laser unit issue. I tried swapping with other color(yellow) and the confirmed it. Today i replaced a new laser and completed the call.

Thank you all for all the inputs

DB

[zoraldinho]

Problem solved after replacing Magenta Laser unit. It was a laser unit issue.

Thank you all for all the inputs

DB

First page solid then next with side light laser issue??

Always something new.

[teckat]

Problem solved after replacing Magenta Laser unit. It was a laser unit issue. I tried swapping with other color(yellow) and the confirmed it. Today i replaced a new laser and completed the call.

Thank you all for all the inputs

DB

I have never see a 5180 Laser have this issue on just one side of paper/ being constant
Doesn't make sense, because of all the factors below, and DRUM ROTATION
laser.JPG
Laser driver generates laser light.
Polygon mirror=scans the laser beam in main scanning direction.
Guide mirror= directs laser light in the direction of the drum.
Corrective lens= corrects displacement of laser light coming from the guide mirror in main
scanning direction.
Displacement correction motor moves the corrective lens to correct displacement in main scanning direction.
BD detection PCB= detects laser light as a BD signal.
BD mirror= reflects the laser light in the direction of the BD detection PCB.

did u try and rotate the M Laser to it's Home position before replacing it