c-6950 4551ci

[dikyo]

hi guys.

TASKalfa 4551ci after switching on error c6950 appears.(also with cover open)

24V on the IH pwb is oke.

I already replaced:

Low voltage unit (power supply)
IH-pwb.

Firmware update gives IH update error.



Every suggestion welcome.

thanks in advance.


grtz.

Dikyo

[taskalfaman]

Re: c-6950 4551ci

hi,

2 possible reasons, check the feed pwb => replace
another solution could be the engine pcb,

have fun

[copier_doctor]

Re: c-6950 4551ci

I second PWB Feed 1.. Just had this issue recently.. Blown ICP2 on PWB Feed 1..

[blackcat4866]

Re: c-6950 4551ci

The IH board solved my KM-8001i. =^..^=

[dikyo]

Re: c-6950 4551ci

Hi guys,

Today i solved the problem.

I replaced 2 flat cables between engine pwb en feed1 pwb.
Wire ffc feed 1 en wire ffc feed2.



grtz
Dikyo

[Jkearbey]

Re: c-6950 4551ci

Hello all

Just got this code "C6950" on Friday on a Kyocera 3551ci and the machine is down, service manual states that it is an IH PWB failure and tells you to trace back starting at the Low Voltage PWB, then to Feed and Finally IH PWB . I checked Low Voltage PWB and got 118v and my Feed PWB checked out as well so I ordered the IH PWB. Went back today to install the IH PWB but unfortunately it didn't solve my C6950 , so I am going to try the white ribbon cables you referred to that fixed your machine, one of them is crinkled some. Will follow up and let you know what I find. Will probably bring a Feed PWB with me for good measure just in case my voltage readings were wrong.

Thanks

[copiertec]

Re: c-6950 4551ci

Hello all

Just got this code "C6950" on Friday on a Kyocera 3551ci and the machine is down, service manual states that it is an IH PWB failure and tells you to trace back starting at the Low Voltage PWB, then to Feed and Finally IH PWB . I checked Low Voltage PWB and got 118v and my Feed PWB checked out as well so I ordered the IH PWB. Went back today to install the IH PWB but unfortunately it didn't solve my C6950 , so I am going to try the white ribbon cables you referred to that fixed your machine, one of them is crinkled some. Will follow up and let you know what I find. Will probably bring a Feed PWB with me for good measure just in case my voltage readings were wrong.

Thanks

What turned out to be fix? Was it the cables? I'm looking for bulletin 2N9-005 (looked on copystar portal and can not locate it) the reason I ask is I currently have a TA 455ci with this code and would like to know what the updated lvpwb difference is from the old one as I may need to order it. I looked in parts manual rev 5 and it still has the old one listed no updated pn.

[JVergin]

Re: c-6950 4551ci

What turned out to be fix? Was it the cables? I'm looking for bulletin 2N9-005 (looked on copystar portal and can not locate it) the reason I ask is I currently have a TA 455ci with this code and would like to know what the updated lvpwb difference is from the old one as I may need to order it. I looked in parts manual rev 5 and it still has the old one listed no updated pn.

Had this happen on a 3051ci last year. Ended up being the LVPS PWB.

Bulletin 2N4-0045 (G074)
Corrective measure for C0980/C6950 (Change the temperature fuse of the 24V generation transformer on the LVU)
Change the material and shape of temperature fuse for the 24V generation transformer.

[Jkearbey]

Re: c-6950 4551ci

What turned out to be fix? Was it the cables? I'm looking for bulletin 2N9-005 (looked on copystar portal and can not locate it) the reason I ask is I currently have a TA 455ci with this code and would like to know what the updated lvpwb difference is from the old one as I may need to order it. I looked in parts manual rev 5 and it still has the old one listed no updated pn.

In my case it turned out to be the low voltage power supply. Also I can say with high confidence that I have had this code at least 4 other times at different accounts and all of them were resolved by the low voltage power supply. I also have had fellow techs with this code and recommended the LVPS and in all those it resolved the error. Apologies for not updating my thread sooner.

[mita]

Re: c-6950 4551ci

I have also found the fan above the main switch to be clogged and cause this issue. It's always worth it to check and clean it out on a service visit

[copiertec]

Re: c-6950 4551ci

I have also found the fan above the main switch to be clogged and cause this issue. It's always worth it to check and clean it out on a service visit

Thanks for the info. When I replaced the power supply today, I cleaned all the fans as well.

[nathicana]

Re: c-6950 4551ci

What turned out to be fix? Was it the cables? I'm looking for bulletin 2N9-005 (looked on copystar portal and can not locate it) the reason I ask is I currently have a TA 455ci with this code and would like to know what the updated lvpwb difference is from the old one as I may need to order it. I looked in parts manual rev 5 and it still has the old one listed no updated pn.

One of the boards is rectangular, the other one is a different shape and uses a different metal plate behind it.

Oops, I just realized I was thinking of the 4501 5501 low voltage board.

[copiertec]

Re: c-6950 4551ci

One of the boards is rectangular, the other one is a different shape and uses a different metal plate behind it.

Oops, I just realized I was thinking of the 4501 5501 low voltage board.

I think that applies to the 4551ci as well. The one I replaced was an "old style" and was replaced with the "old style"

[ntbann]

Re: c-6950 4551ci

Have you tried a fuser. Had this once on an 8001i.

[copiertec]

Re: c-6950 4551ci

Have you tried a fuser. Had this once on an 8001i.

Yes, first thing I did was swap out fuser. The power supply fixed the issue.