[Error Code] RP3700 - t12-309 + t17-020

[mixedfeelings]

Hey all!

After months of smooth running, i've encountered another hiccup with my RP3700.

Back story
When I went to make my first master today, the machine suddenly seized and through a series of errors (i stupidly did not write down what they were), I discovered that the far back set of the master removal rubberbands had been clogged up by a large piece of master that had spun around the spindle and locked it in place. I got all of the master out, and found that my master clamp was stuck (on the machine, not the drum) - so i took the clamp motor off and got that worked out, put everything back together and every thing seemed good to go. right?

Wrong, of course! As soon as i plugged the machine back in I was greeted by two new to me errors - first: t12-309 and when I press reset to clear that error I get t17-020 and I can't move on past that. I imagine the t12-309 error is because of the master wrap. Is there something that can be simply reset or am I in serious trouble?

Is there anything in the back pcb area that can effect the t17-020 error?

Thanks in advance!

[jermyth]

Re: RP3700 - t12-309 + t17-020

Check your connectors in the back where you were working. That or the copy/master meter has failed. Heard of it happening, but not seen it myself.
The code specifically says: Solenoid counter not connected. Check the connectors at the meters too. Also the old power off, hold reset while turning on.
Good luck.

[mixedfeelings]

Re: RP3700 - t12-309 + t17-020

I reseated the connectors for both of the counters and checked all of the things I unplugged in the back. Still getting both errors. the t17 seems like an easy fix if i can locate those counters, or at least easier to understand, but i'm struggling to work through the t12-309 do I need to take the master removal system apart?

Thanks for responding jermyth!

[jermyth]

Re: RP3700 - t12-309 + t17-020

First I'd strongly that you get a manual. Second the t12-309 is a master disposal code: the master compression motor limit sensor does not change within 200ms during compression operations. Sounds like a disposal jam has occurred, check it out again, possibly the plate is broken or motor gone bad.
Good luck & happy thanksgiving.

[mixedfeelings]

Re: RP3700 - t12-309 + t17-020

Thanks! I actually have a manual - and it's been insanely useful.

There is no jam (at least not anymore, but that's what started this out). But, I noticed that both the solenoid counters and the disposal motors are on the same connector on the power supply PCB - and it happens to be the purple cable that you unplug to push the PCB's aside. CN12 connects to the elevator motor, copy counter, master counter, master removal motor, master pressure motor - none of which are working now (I ran the elevator motor action test mode and it errored out too). I ohmed out each wire in the connector cable and they were all good and tried another cable from an RP 3105 for good measure - still nothing. Does this mean my PCBs are toast? or is there some other magic key I should be looking for? Am I on the wrong track?

I am going to try replacing the f4 fuse tomorrow (as that is the one that seems to go to CN12 in the wiring schematic) - but it looked fine.

[jermyth]

Re: RP3700 - t12-309 + t17-020

If you're going to the fuses do F5 also, it does power to the connector to. But check might as well check the voltages on the connector, is there 24 AC?
The front drive PCB may have gone bad. Message me, I might have one.
Good luck.

[mixedfeelings]

Re: RP3700 - t12-309 + t17-020

It actually ended up being the F5!! Whoever serviced this machine before me sharpied little dots on the sides of the fuse, so I couldn't tell that it was blown at first glance. replacing F5 did the trick for most of it. Now I have a better sense of how the electricity is flowing through this beast!

Thanks so much helping me work through it.