Bizhub 500 code c2803

[Downunder]

Hi Guys, working on Bizhub 500... 135,000 copies on meter, came up with c2803 -- TCR abnormality. Did trouble reset a number of times. Went into imaging process ran a TCR, fault still there. Added some toner to dev box, ran TCR again. Fault went away. Put the toner bottle motor under test, bottle turns ok. 300 copies later fault came back. Replaced starter, did TCR, no luck, Replaced ATDC sensor, did TCR, no luck, replaced print control board, no luck, gave the copier good vac and clean, Checked all the connections on the boards. at end of TCR run it comes up with "error 5" -- any help appreciated. Glad the weekend is here!

[CMB]

C-2803 TCR output abnormality.
When the output ripple voltage of
the TCR sensor (TCRS) is less
than 0.5 V.
The main body
stops immediately
to turn OFF
the main relay
(RL1).

TCR sensor (TCRS)

Printer control board (PRCB)

try replacing the TCR sensor. and verify that the developing IS getting toner.

[Downunder]

Yes I have replaced the TCR (ATDC) sensor and have replaced the print control board and have manually put toner in the dev box as mentioned in my initial post. The copier goes into C2803 automatically after trouble reset and the error5 comes up after running TCR as mentioned in my initial post. Thanks for the input anyway.

[jeroen2005]

Hi,

Check if the drum unit and the developer unit are turning manualy and in the service mode and by bypassing the right door switch.If not replace the motor what drives them.It could also be the main control board what supplies the power supply to the motor ,when you replace the main control board you will get code C1183,this means you must flash the Image board with the Isw tool to the correct version.

Greeting Jeroen

[CMB]

more info i found for you.

Description

Poor copy quality and jamming.

Solution

http://www.microsoft.com/downloads/d...9-ab826e7b8fdf .

C-2803.

Solution

http://www.microsoft.com/downloads/d...9-ab826e7b8fdf .

[random]

You say you have replaced the TCR sensor, have you replaced the tank? The only time I have struck this problem is when someone has removed the lid of the developer tank and the metal shims have fallen out then replaced the lid. This slightly obstructs the mag role and prevents adequate dev/toner from reaching the toner sensor.

[Downunder]

Thanks for the input. Went back to client today after long easter weekend, with dev tank from another 420/500 slid it in .... 2803 gone...
took the tank back to other 420 slid it in .... 2803 straight away.
So about to investigate problem.... let you know what we find. So thanks for all the help

[Downunder]

ugggggh fault back again this morning. Replaced the Nvram board. Back to test again...... Bring back the DI's 450/470

[dogsbody]

I just checked the parts manuals to see if the new 420/500's use the same "Toner Detect Board" as the 7020's and the like, and they do (same part number and everything).
On the older machines if this gets dirty (it may look clean but wipe it and you will see) you cannot perform L-detect (TCR), and get other funky errors.
You may have already cleaned it but if you haven't give it a go. (may have to do TCR again after though).
Cheers.

[Downunder]

Hi "Dogsbody" thanks for input. The board that you mentioned is that under the drum?

Pulled the machine out today, will test it back at workshop . . . it's a challenging one, probably turn out to be something darn simple....

Cheers

[ITCHYFINGER]

With What You Have Replaced Already, Try Replacing The Drum (oem) And The Developer At The Same Time. Reset Counters And Rerun Tcr Adj. I Have Seen Non Oem Drums Cause This Problem.

[ITCHYFINGER]

With All You Have Replaced, Try Replacing The Drum With An Oem Drum And New Developer. I Have Seen Non Oem Drums Cause This Problem..also If Your Black Patch Dont Appear You Can Get Funky Errors To Developer.

[Downunder]

Thanks "itchy" , yes, I will be doing a backt to basics call monday morn. Strip machine down and start from scratch, etc. Copier has only done 135,000, have already replaced starter at 135,000. Strange that everytime i change something fault goes and then comes back. Probably dodgy toner mechanism somewhere. Have experienced weird faults before on another Biz500 but that one had runup 257,000 copies. Once drum, starter, etc, had been changed and counters cleared, no problems at all apart from fuser drive gears chewing out at the 400,000 mark. But that's another story.....

[xcopy]

We have the same problem can you remember what fixed it in the end.

[mtgrizrich]

I had a 2803 and found the toner addition solenoid was not energizing. Had to replace the printer control board and the toner addition solenoid (SD5), then had to flash it.