canon ir7105

[ivc]

have a problem with copier.I have a black backgraund , but i still see a text masege.
the backgrund is very black. time to time the copie is normal. sometimes appears code E197. i have replaced all contact to primary and transfer korona.


CORRECTION!!!!!

THE COPIE IS TOTAL BLACK , NO TEXT ( PRINT OR COPIE)

thank you for your help

[teckat]

have a problem with copier.I have a black backgraund , but i still see a text masege.
the backgrund is very black. time to time the copie is normal. sometimes appears code E197. i have replaced all contact to primary and transfer korona.


CORRECTION!!!!!

THE COPIE IS TOTAL BLACK , NO TEXT ( PRINT OR COPIE)

thank you for your help

What work were u doing before Black Copy & Error code ??

were u working on Fuser - before Error code ?
is Black Issue also on Prints ?

Check Laser scanner motor (M4)

Check Developer bias HVT


Check
The registration bias lead may come loose and cause the error code E197 to appear during boot up.
1) Pull the separation / transfer corona unit out.
2) Inspect the bias cable located to the right of the sep/trans assembly holder in the rear of the transport assembly.
3) Tighten and adjust tube if needed -confirm there is no short between the screw and cable.

[Canuck]

Intermittent? Reseat the Video PCB...its the vertical board on the far left side of the main controller. Also re-seat the reader cable at the back of the machine

[SCREWTAPE]

What about the pre transfer corona?? Did you replace this one?

Are they any non image areas(voids)

How does a PG4 look like.

What are the sub codes on the E197-xxxx

E197 Error Code: Because Transfer/Separation Corona Assembly is mounted incorrectly


Description
Since the metal plate (positioning plate) that fixes the transfer/separation corona assembly to the fixing/feeder assembly was attached in the wrong position, E197 Error Code occurred.
- E197 Error Code can be displayed when the laser scanner motor causes a communication error.


Cause
Since the transfer/separation corona assembly had poor contact with the high voltage contact point, electrical noise occurred, consequently causing the error code.


Field Remedy
1. Slide out the fixing/feeder assembly, and then check if the transfer/separation corona assembly [1] moves up and down smoothly within its movable range [2].





2. If the transfer/separation corona assembly does not move smoothly, loosen the screw [4] for the fixing plate [3], and tighten it again in the position in which the assembly can move smoothly.

[SCREWTAPE]

E197-

E197 Error Code: Due to noise of bias applied to Transfer Guide


Description
Since the crimp terminal on the end [1] of the cable that is used to apply bias to the transfer guide had a displaced protection tube, it came into contact with the screw as shown in [2], causing electrical noise that resulted in E197 Error Code.


E197 Error Code can be displayed when the communication with the laser control IC is not normal.


Field Remedy
1. Remove the regist. transfer assembly from the fixing/feeder frame assembly.
2. On the rear side of the regist. transfer assembly, check if the crimp terminal (metal portion) of the bias cable for the transfer guide is covered with the protection tube securely; if it isn't, move the tube as shown in [3].
3. If the terminal is covered securely with the tube, remove the high-voltage output connectors on the H.V.T. PCB one by one to identify the high-voltage line that causes the error code. In a case, the incorrectly mounted transfer corona assembly led to poor contact between the high-voltage terminal in the rear side of the assembly and the terminal on the main body side, causing electrical noise that resulted in the error code. Therefore, considering this possibility, check those terminals for poor contact as well.
Reference: The reason why bias is applied to the transfer guide is to make the surface of the guide have the same polarity as toner for preventing the surface from being soiled with toner (i.e., prevention of soiled back).

[ivc]

black copie

i solved E 197, but i stil have problem (black kopie and print) see attacment

copie.jpg

have a nice day

ivc

[teckat]

how did u solve E197 ?

what procedures have u followed or taken to investigate copy quality issue ?

[ivc]

E197 the problem was in the poor contact (broken plastic) soory my english is not good

i have replaced complet drum unit, developing assembley, complet transfer unit,all contacts HVT, complet corona,hvt asseblay,
like i said, one copy is normal, if i take lot of copy (like 5 or more) the one or two are good the other are black.
and if I turn off and on the one by one copy are normal.

[Herrmann]

shure that your primary corona is in a good shape?

[SCREWTAPE]

Check potential control.

[teckat]

E197 the problem was in the poor contact (broken plastic) soory my english is not good

i have replaced complet drum unit, developing assembley, complet transfer unit,all contacts HVT, complet corona,hvt asseblay,
like i said, one copy is normal, if i take lot of copy (like 5 or more) the one or two are good the other are black.
and if I turn off and on the one by one copy are normal.

is this a copy model only ??

so u are talking about COPIES of the GLASS only ???

if so/// how is the CCD UNIT & Flat Cable ???

[Canuck]

Check potential control.

Definitely....turn it off and run it. Run it wthout pre-clean assembly,check pre-exposure lamps are working,dev bias connector(they get re-installed wrong),eliminate the obvious

[blazebusiness]

Check potential control.

That's a good place to start. Disable Potential control in service mode.
COPIER > OPTION > BODY
PO-CNT

Then see what you get running a copy. If copies are still black I would suspect a laser issue of some sort. If copies are ok - check or replace potential control pcb. Could also be related to corona or hvt but I doubt it. I'm leaning toward the laser as your trouble.

[SCREWTAPE]

If you go into service mode Copier>Display>DPOT and see what VLT is reading (normally around 65~70 volts).
Next check VLM and what that reading is (this should be close to VLT).
If VLM is much higher than VLT ( such as VLM= 200 or 300) the Laser Scanner power is to weak, and could not bring the voltage down to correct target.

[SCREWTAPE]

Here's another one

Its a weird case but won't hurt to check.

Tray 1 Vertical feed clutch CL8 had metal shavings around it, causing electrical feedback to the machine.
Cleaning up the area and replacing CL8 resolved the black copies.