Aficio MP 161 - SC929

[Cipher]

I seem to have a re-occuring fault that I can't seem to pin down.

It's SC929 which the SM says is 'IMAC hardware error' relating to the BICU PCB.
There is a issued RTB that says it's trigged by poor grounding of the paper tray.
But I have checked and cleaned both grounding points on the tray as well as other grounding points around the machine.
As far I can see everything is making a good solid contact.
I have also replaced the BICU and reseated all the connectors through out the machine.

This little machine will not beat me LOL.

Anyone have any further suggestions on this one?

[tr21x]

HAD THE KINDA SAME PROBLEM AND IT WAS THE WIRING HARNESS IN THE PAPER TRAY

I seem to have a re-occuring fault that I can't seem to pin down.

It's SC929 which the SM says is 'IMAC hardware error' relating to the BICU PCB.
There is a issued RTB that says it's trigged by poor grounding of the paper tray.
But I have checked and cleaned both grounding points on the tray as well as other grounding points around the machine.
As far I can see everything is making a good solid contact.
I have also replaced the BICU and reseated all the connectors through out the machine.

This little machine will not beat me LOL.

Anyone have any further suggestions on this one?

[Cipher]

Think I've sort it.

I had another go at the grounding contacts on the tray.
Polished them up and streched the connectors out abit.
Tested various points around the machine back to earth with a multi-meter. The wire harness on the cross beam that runs under the tray checked out ok.

Done 1000 copies so far and there has been no re-occurance of SC929 (yet).
But it had done 3000+ copies back at the customers before it had re-occured the last time, so dunno as it can be so intermitten or happen fairly quickly.

[Tonerbomb]

There is a tsb from ricoh for this problem and it does refer to the tray ground contacts. It seems to occur more with the 2nd tray option.