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OCCopierGuy
02-11-2008, 08:15 PM
I have been very frustrated with my new Konica Minolta C6500. I was very impressed by the showroom samples. However, trying to print from my shop is a complete different story. The main issue is that the red is very week (light) and so what should look like red is coming out orange. The service tech said it is just the way teh machine is, but I seriously doubt that, because the Fiery test page (Fiery logo and test patterns) looks orange.

Anyone insight or suggestion is greatly appreciated. Thank you!

Haroldbfix
02-11-2008, 09:28 PM
Ive seen a similar problem. A print shop was printing a image of a signal light. and the red was orange, the Fiery's test page was also light. the test pattern was light as well. After much time spent on this issue. It turned out to be the gamma sensor. We replace the unit and recalibrate the machine and the Fiery. Hopefully this saves you some time:)

random
02-12-2008, 05:01 AM
This is correct, there is new colour registration assy that resolves the problem with orangey reds and purpley blues.

twinax
02-13-2008, 08:43 PM
The PGC sensor is defective on several C6500, you can check the sensor in technical mode, the value should be between 90 and 110 max. you also can see the deviation through the colorwise calibrator. the curve are flat near to 85%.
It is necessary to replace this sensor before adjustement. the board of new sensor is completely different that the old one.
kind regards

Twinax

OCCopierGuy
02-14-2008, 01:27 AM
Thanks for the feed back guys. I will get on my techs.
Much appreciated!!

OCCopierGuy
02-27-2008, 02:40 AM
Just had the service tech replace the color registration assy with the(gamma ray sensors) and the machine is now producing incredible red. Thanks a lot guys.

Bruce Wayne
10-02-2008, 12:21 PM
Hello I read your comment and would like to know where you view those values and when you say PGC sensor are you referring to the Color Reg. Assy that has been updated?


The PGC sensor is defective on several C6500, you can check the sensor in technical mode, the value should be between 90 and 110 max. you also can see the deviation through the colorwise calibrator. the curve are flat near to 85%.
It is necessary to replace this sensor before adjustement. the board of new sensor is completely different that the old one.
kind regards

Twinax

ni311
10-02-2008, 04:34 PM
Can you share with us the part number of that assy or is it the same with the old one from pm?

Bruce Wayne
10-02-2008, 04:56 PM
Part Number is A03UR79800.

bigmark
10-04-2008, 01:31 AM
I am sure you did this, but make sure its calibrated as well... should calibrate depending on how picky you are about color any where from once a day, to once a week. Also, from time to time you can run the "execute adjust operation" I dont usually recomend running the belt refresh, it does not do a whole lot and takes forever to complete. but the other three adjustments will help with a lot of copy quality issues as well as making sure you do these adjustments prior to calibration.

Aliko
12-21-2018, 08:35 PM
The PGC sensor is defective on several C6500, you can check the sensor in technical mode, the value should be between 90 and 110 max. you also can see the deviation through the colorwise calibrator. the curve are flat near to 85%.
It is necessary to replace this sensor before adjustement. the board of new sensor is completely different that the old one.
kind regards

Twinax
How can i check PGC sensor value on c6500?

copier addict
12-21-2018, 08:40 PM
How can i check PGC sensor value on c6500?

You might have better luck creating a new thread rather than resurrecting a 10 year old one.

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