SHARP MX-7580.
I'm French and this post is translate by Google Traduction.
The simple tip: a pale area in the middle of the sheet in 1/2 yellow shade:
SHARP MX-7580.
Hello, the machine in the photo can be scary, if we remove the stores on the right, we are exactly in my configuration.
The simple tip: a pale area in the middle of the sheet in 1/2 yellow shade:
Scan demi teinte jaune.jpg
Yellow test in 1/2 shade in simulation 64-1 (17)
Disregarding fingerprints from the glass when I scanned the yellow test. This is the pale area that I am looking to resolve.
On solid colors at 100%, we do not see the pale zone.
If I stop the machine on the way, I find this pale area developed in yellow on the surface of the drum.
My work done for this failure:
- Complete maintenance
- Change of the laser block (mirrors and polygonal mirror cleaned)
- Yellow developer block replacement (new)
- Replacement of primary transfer (yellow transfer roller pressure looks good on transfer cloth and old transfer works well on another machine)
- Inversion of Yellow and Magenta drum blocks for test
- Swapping the Yellow and Cyan Drum Drives
- Reset of laser values in sim 61-13 and test settings in auto or manual in sims 61-11 and 61-12.
- Swapped the Drum/Dev Block support rails between cyan and yellow (no laser shutter on this machine).
- One could think of a bad carpet on the magnetic brush of the developer block or of stray light. I looked at the open door, I see nothing.
- The developer block was successfully replaced with the same issue at the end.
An idea?
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