TA-3551ci: C6950 error code

[BillyCarpenter]

Just got a call from a local church (yes, on Sunday.) and the machine has a C6950 error code.

The manual says it can be one of 4 PWBs:

1. Power Source Board
2. Feed PWB
3. Fuser IH Board
4. Engine PWB

Any insight would be appreciated.

Thanks.

[blackcat4866]

Re: TA-3551ci: C6950 error code

This is the one time I came across the C6950:

"C6950". After attempting firmware machine remains locked in a firmware error "IH firmware 0801", and "Scan 0801", even when powered on in normal mode.

23.9vdc is absent at YC12 pins 1, 2, & 3 on the low voltage power supply. 5vdc is present at pin 4, & ground at pins 5, 6, 7, & 8. DSPF PWB is not properly fitted to the Main PWB.

Re-seat DSPF PWB. Replace Low Voltage Power Supply (302N494081). Rename firmware file [DL_CTRL.2N4] to [KM_EMRG.2N4], and load firmware (emergency firmware load).

[BillyCarpenter]

Re: TA-3551ci: C6950 error code

This is the one time I came across the C6950:

"C6950". After attempting firmware machine remains locked in a firmware error "IH firmware 0801", and "Scan 0801", even when powered on in normal mode.

23.9vdc is absent at YC12 pins 1, 2, & 3 on the low voltage power supply. 5vdc is present at pin 4, & ground at pins 5, 6, 7, & 8. DSPF PWB is not properly fitted to the Main PWB.

Re-seat DSPF PWB. Replace Low Voltage Power Supply (302N494081). Rename firmware file [DL_CTRL.2N4] to [KM_EMRG.2N4], and load firmware (emergency firmware load).

Dude, you never cease to impress me. So all I need to do is rename the firmware and that's considered emergency firmware?

[blackcat4866]

Re: TA-3551ci: C6950 error code

Yes, exactly. =^..^=

[copiertec]

Re: TA-3551ci: C6950 error code

The old style LV PWB are notorious for this failure. Pull off the back cover and see if it has the old style pwb, it has the bottom right cut out, almost like an upside down L cut out. If its the old style you need to replace it.

[copiertec]

Re: TA-3551ci: C6950 error code

Just replace the malfunctioning pwb with an old repaired LV PWB, because the holder plates are different for the new updated LV PWB, order it from Hytec.

[BillyCarpenter]

Re: TA-3551ci: C6950 error code

The old style LV PWB are notorious for this failure. Pull off the back cover and see if it has the old style pwb, it has the bottom right cut out, almost like an upside down L cut out. If its the old style you need to replace it.

That's very helpful. Thanks.

[copiertec]

Re: TA-3551ci: C6950 error code

here is another bulletin on the 6950 error that shows the old style and the new style next to each other.

[BillyCarpenter]

Re: TA-3551ci: C6950 error code

here is another bulletin on the 6950 error that shows the old style and the new style next to each other.

I see what you're talking about with the cut out on the right lower side. Thanks again.

[KYO_OEM]

Re: TA-3551ci: C6950 error code

@Billy
see additional KDC info regarding C6950.
@blackcat and others
you also can use special FW upgrade procedure to eleminate "stuck in FW upgrade".
By this procedure you can delete the "FW error flag" and get back original error screen without "FW error****, 0801"
e.g.
1. FW upgrade during C6950/ F040 error message
2. system stucks in "error IH pwb, 0801", "mail bin error, 0801" or else...
3. upgrading from CTRL(main), ENG(engine) + Panl(panel) only
4. C6950/ F040 error message again, no more stuck in FW error after restart
5. Exchange from low voltage pwb
6. running complete FW upgrade without ES_Skip.on file
7. Done, system repaired, no more error.
See enclosed sample leaflet.
(Also works on other systems like Alphard 1, Mercury, Tomcat, but won`t work on Iris series, because "FW error flag" would stored on SSD PWB instead of HDD or operation panel!!!)

[BillyCarpenter]

Re: TA-3551ci: C6950 error code

@Billy
see additional KDC info regarding C6950.
@blackcat and others
you also can use special FW upgrade procedure to eleminate "stuck in FW upgrade".
By this procedure you can delete the "FW error flag" and get back original error screen without "FW error****, 0801"
e.g.
1. FW upgrade during C6950/ F040 error message
2. system stucks in "error IH pwb, 0801", "mail bin error, 0801" or else...
3. upgrading from CTRL(main), ENG(engine) + Panl(panel) only
4. C6950/ F040 error message again, no more stuck in FW error after restart
5. Exchange from low voltage pwb
6. running complete FW upgrade without ES_Skip.on file
7. Done, system repaired, no more error.
See enclosed sample leaflet.
(Also works on other systems like Alphard 1, Mercury, Tomcat, but won`t work on Iris series, because "FW error flag" would stored on SSD PWB instead of HDD or operation panel!!!)

Great stuff, KYO.

Thank you.

[BillyCarpenter]

Re: TA-3551ci: C6950 error code

I went out to the church today and the problem was indeed a bad Low Power Board. I replaced it and the machine booted up and worked like a charm. I didn't need to run the emergency firmware. I was kind of disappointed about that. I had it ready to go, though.


Thanks to everyone in this thread who helped me out. It's easy when I'm given the answer to the test. Thanks again.

[copiertec]

Re: TA-3551ci: C6950 error code

I went out to the church today and the problem was indeed a bad Low Power Board. I replaced it and the machine booted up and worked like a charm. I didn't need to run the emergency firmware. I was kind of disappointed about that. I had it ready to go, though.


Thanks to everyone in this thread who helped me out. It's easy when I'm given the answer to the test. Thanks again.

That's what we are all here for, to help one another out. Glad you fixed it.

[qtech]

Re: TA-3551ci: C6950 error code

Yes, indeed, thanks to all. I had my first C6950 on a 4550ci last week (older LVPS) and replaced it...machine good as new. Great forum here, gotta make another contribution to the cause.
Cheers,
Chris

[Doug James]

Re: TA-3551ci: C6950 error code

Again THANKS So Much for this !!! This has answered a huge problem I have been having !!!