mp c 2011 black issue

[Marwanalhajbi]

i have mp c2011 has an issue with only gray colour, it prints black normally but when i print gray it almost disappear.

if can you notice on the attachment on calibration page you see like black colour is empty inside,

any suggestion,

PS: the scanner is not that shape, apologies for the scan quality,mp c2011.pdf

[Marwanalhajbi]

Re: mp c 2011 black issue

sorry nottomention,

i have changed a new pcu and development unit,the MFP is updated and still same issue.

[tonerhead]

Re: mp c 2011 black issue

Your laser is clean? Your sample shows all colors are not really a complete fill. I would lean towards ID sensors, itb assy, or paper transfer roller. If you do a sky shot and stop the copy, is all of the toner being transferred to paper or is some left on ITB? Is your pro-con all 1's?

[TonerMunkeh]

Re: mp c 2011 black issue

When the black unit starts to rotate you can hear a clunk in the back of the machine when the dev solenoid activates. There's a sticky pad on that solenoid similar to the Adonis exit unit one that sticks, stopping the dev drive kicking in intermittently. Always worth a look.

[slimslob]

Re: mp c 2011 black issue

Is the problem when printing or only when copying? The fading I see in your sample could be a scanning issue. try cleaning the optics.

One other thing, the laser process is write to no charge. Grey scale is achieved by adjusting the laser intensity. If there is a film built up on the laser shield glass, it might cause the grey scale to taper off more than normal. It could also be a bad laser unit.

[copier tech]

Re: mp c 2011 black issue

i have mp c2011 has an issue with only gray colour, it prints black normally but when i print gray it almost disappear.

if can you notice on the attachment on calibration page you see like black colour is empty inside,

any suggestion,

PS: the scanner is not that shape, apologies for the scan quality,[ATTACH]55139[/ATTACH]

Does the black PCDU have the rear cover fitted ?

[davel]

Re: mp c 2011 black issue

Probably not.