irc 5870 very light copy

[smiley]

its about 700k. the transfer belt has been replace corona wires.

[blazebusiness]

The first thing I would do to diagnose this is stop the image in the ITB to see if it looks good. If the image on the itb is ok then the secondary xfer roller or some other xfer issue is happening. Poor xfer can also be caused by bad HVT assembly. but you need to first determine if it is a bad xfer issue or not. If your image on the itb is bad you need to focus on the primary corona for starters or maybe primary transfer roller assembly. You said you replaced the primary corona. Did you replace the whole corona assembly? Or just the wires? Did this problem occur after somebody tried to rebuild the corona?

[SCREWTAPE]

its about 700k. the transfer belt has been replace corona wires.

What about the bias clips on the ItB ass'y.

[teckat]

its about 700k. the transfer belt has been replace corona wires.

you first {quoted}the print is too light in all colors
now your say pg10 is blank ??
Blank & too light - what is it ??
have u tested copies of glass ?

keep it simple/ is their an image on the ITB belt ???

*****make sure the ITB cleaning blade is not staying engaged
is the primary transfer roller locked in position.??

Release..jpg

[SCREWTAPE]

*****make sure the ITB cleaning blade is not staying engaged
is the primary transfer roller locked in position.??

Release..jpg

The primary transfer locking mech.

Good point!

[rosaro75]

first all ram clear in*17 39* mode. then change potential control to off by going copier>option>body>po con

if it is not cleared. start a color copy stop when 2nd color processed . remove drum unit. and see the drum for toner processed or not. if on drum ok, then see the belt if copy on belt not ok, then check 1st transfer roller connection and check 3 springs pushed up the roller. the middle spring must tobe there.
if copy on ITB ok then you must have to check the earth plate connection touches of the small rubber roller edge properly. this is importent. if not coming properly replace the itb and conform first. then you can go for hvt or dc controller

[SCREWTAPE]

first all ram clear in*17 39* mode. then change potential control to off by going copier>option>body>po con

if it is not cleared. start a color copy stop when 2nd color processed . remove drum unit. and see the drum for toner processed or not. if on drum ok, then see the belt if copy on belt not ok, then check 1st transfer roller connection and check 3 springs pushed up the roller. the middle spring must tobe there.
if copy on ITB ok then you must have to check the earth plate connection touches of the small rubber roller edge properly. this is importent. if not coming properly replace the itb and conform first. then you can go for hvt or dc controller

You have made some good points about the ITB ass'y.
I know about the springs. What a head banger it is to get those springs back.

I have ask... What is *39???

I think I could understand *17
But *1&7.. Isn't that fixed Ip mode??

What is *39???

And how do clear ram using these, perhaps 1 or 2 functions.

You can clear ram from service mode.

Which pcb's ram are you telling him to clear?


Please post back.

[rosaro75]

17 press while boot up will fix ip mode. But i told after machine get ready. instead of *>2&8>*, you press * > 1&7 after 3&9 > *. you will 3goto factory mode. in this select box 1 it is "355 all ram clear" select value "2". it will clear all dump and everything. please note that address book, mail box, and memory will be cleared. so take back up before you do this. this will help you to clear dump of images making all copies light or dark or unknown type of lines like that.

[teckat]

17 press while boot up will fix ip mode. But i told after machine get ready. instead of *>2&8>*, you press * > 1&7 after 3&9 > *. you will 3goto factory mode. in this select box 1 it is "355 all ram clear" select value "2". it will clear all dump and everything. please note that address book, mail box, and memory will be cleared. so take back up before you do this. this will help you to clear dump of images making all copies light or dark or unknown type of lines like that.

You are trying to tell poster to go in Level 3 =**Any adverse affects on the machine will not be supported by Canon USA if Level 3 service modes are adjusted.

why would u even do that/ u don't have to be in fixed IP to clear RAM/ AND ABOUT THAT FACTORY MODE _ there is a Factory mode, but that is not it -an E355 Clear-should not be used-unless it shows on control panel.
your Level 3 procedure is all wrong.

E355 error code is due to no communication between the Main-Controller board and the Serial Number board below it
Printing issues need to be investigated with a Procedure _ that's what the Image Test Prints are for.
Trained techs know they have to print out Data sheets before any type of RCON or DCON clear .

[SCREWTAPE]

Thank you teckat.

What is this guy talking about!