[CQ] [Canon 5550i] images problem

[tjrtkdqja123]

KakaoTalk_20240301_150410674.jpg

The left side is a normal machine, and the right side is a problem machine.

This is chart number 10 on the test page, and it appears as if there is fog.

It's an automatic color correction pattern, but it seems like the 4 colors of black appear as blue.



Things I've tried

4-color drum replacement,
Patch sensor inspection
Developer BK, C replacement
Toner is not provided and the same toner is used as the left pattern machine.

[zoraldinho]

Re: [Canon 5550i] images problem

Can you post a pic of PG-10 from service mode please.

[tjrtkdqja123]

Re: [Canon 5550i] images problem

1709451854345.jpg
Thank you for your answer
This is test page 10.
The middle is the original,
adjust - hv-tr 2tr off

Left is -100
If the right side is + 100.

[zoraldinho]

Re: [Canon 5550i] images problem

Is the image on ITB ok?
the sec.transfer roller could be causing problems.
If it's not ok:
Try replacing the dc from another device.

[tjrtkdqja123]

Re: [Canon 5550i] images problem

thank you for the answer.
I tried replacing the belt Assy, but the symptom is the same, so I will check DC.

[zoraldinho]

Re: [Canon 5550i] images problem

thank you for the answer.
I tried replacing the belt Assy, but the symptom is the same, so I will check DC.

I didn't tell you to change the transfer belt. Check the image quality on itb! If it is ok, replace the sec transfer roller.