Sc670 - mpc6003 / mpc5503 / mpc4503

**bob marley** · 06-30-2017

Originally Posted by Ricoh-ono

Hope no one ever has this problem, but if you do maybe this will help.

Than u 4 the info

**aktasson** · 07-04-2017

Originally Posted by Ricoh-ono

I had a machine that was throwing SC670 on startup. A ribbon cable and multiple boards later the SC code still existed. The problem was narrowed down to connector CN203 on the Imaging IOB board, then further narrowed to the "ID Chip" PCB:TCB (Yellow). The PCB:TCB was swapped with another color (Cyan) but the problem remained with (Yellow). After ruling out a pinched/shorted wiring harness, I remembered there is small "chip" on the toner bottle. So we finally removed the toner bottle (Yellow) and the problem went away entirely. Put the bottle back in and it the SC670 came back. Swapped the bottle with a good one and problem solved. There happened to be some sort of defective "chip" on this particular toner bottle. Hope no one ever has this problem, but if you do maybe this will help.

Attachment 29040 Attachment 29041

May can i ask you which 670-01,02,03 etc... occurred on the customers machine?

**Lagonda** · 07-04-2017

I'm chasing that problem right now, thanks for the heads up.

**aktasson** · 07-06-2017

Here we go again, SC670-01. The toner trick does not help here in my case anymore. When the boards work properly green led is permament on and the red led of bcu board blinks permanently without breaks. When the green LED of IPU board blinks, the red led on bcu board blinks twice with a break between so there are possible communication problems bcu and ipu board. You see the two white flat cables. Pull both of them off (be very careful!!!) and put them on again on all marked sides. The eeprom on bcu I have also set out and put again on the socket. After this works the machine started without sc anymore.