immage fading IR6570

[bineshpaul]

Dear,

In my Canon IR 6570, while taking copy or print the image is fading. I have changed the corona wire. Image is attached herewith. but no change. pls tell me a solution. Thanks in advance

Regards
Binesh

[Brian8506]

Re: immage fading IR6570

It looks like a developer cylinder pattern. Check dv unit including spacers.

[teckat]

Re: immage fading IR6570

Transfer/Separation Corona Assembly

Is that a image -main scan or sub scan image

EXAMPLE ONLY BELOW
Right to Left or Front to Back
SUB SCAN.JPGMAIN SCAN.JPG

[bineshpaul]

Re: immage fading IR6570

Transfer/Separation Corona Assembly

Is that a image -main scan or sub scan image

EXAMPLE ONLY BELOW
Right to Left or Front to Back
[ATTACH=CONFIG]11173[/ATTACH][ATTACH=CONFIG]11174[/ATTACH]

right to left

[mr.daus]

Re: immage fading IR6570

Dear,

In my Canon IR 6570, while taking copy or print the image is fading. I have changed the corona wire. Image is attached herewith. but no change. pls tell me a solution. Thanks in advance

Regards
Binesh

chek transfer sparation corona assembly for any short. (replace this unit with a new one)

if on sparation coronas is ok or not a short, try chek the developing cilynder arm and bearings,, (replace dev cilynder and bearing + spacer)

[Brian8506]

Re: immage fading IR6570

If its in the ltr direction, check developer unit. If its ltrr check t/s corona unit

[teckat]

Re: immage fading IR6570

If its in the ltr direction, check developer unit. If its ltrr check t/s corona unit

Canon Direction Description Chart>
Color Lines coordinate with Descriptions

click on pic or open word .doc below
TESTCHART223.JPG

Canon Chart direction1.doc

[bineshpaul]

Re: immage fading IR6570

Canon Direction Description Chart>
Color Lines coordinate with Descriptions

click on pic or open word .doc below
[ATTACH=CONFIG]11182[/ATTACH]

[ATTACH=CONFIG]11183[/ATTACH][ATTACH=CONFIG]11184[/ATTACH]

The picture i have attached is taken LTR position.

[COPIERTEC ASSOCIATES]

Re: immage fading IR6570

Hello comrade from the specimen of your copy try the following:1.Check the spacers on the developer unit.2.Check the inner bearings on the developer unit. 3. Check on transfer blocks on the transfer corona,assembly.4. Check for any dry joints on the HVT board and any possible leaking component on the HVT board.5. Check for the settings of the drum potential in service mode ie OPTION>BODY>PO-CNT try to change between 0&1.Good luck!!

[bineshpaul]

Re: immage fading IR6570

I agree, looks like a failing dev unit.

What is the machine counter on? I would guess it to be high.

just 14 lakhs only