MX5500N L4-06

[tmaged]

I did a little searching on here & IDNCService, but didn't find anything. I haven't been to the machine yet, but will tomorrow morning. Just curious if anybody has anything to add. I had the tech run 6-3 and he said it goes through the motions & the sensors change state.
Thanks for any input.

[OMD-227]

No bulletins here either on L4-06 for C-Dragon or Venus machines, but we both know its either going to be clutch, transfer belt unit or rear frame sensors that are causing this.

One thing I would do is run 6-03 with the front cover (waste toner transport cover) open & with door sensor tricked. You will see the belt cam move & if you look closely enough, you will see the transfer rollers drop down onto the drums through a small gap between the belt frame & top of the drums/devs.

Check the sensor actuators on the rear of the transfer belt unit, ensure all tension springs on the belt unit are intact. Run the sensor check in sim 30 for the position sensor operation (TBLTC & TBLTB).

Take a spare clutch with you for the main drive unit.

I've never had L4-06 on a C-Dragon or Venus (but hundreds on the Pastel & C-Jupiters), but the operation & theory is the same.

[tmaged]

Thanks Wazza !! Does 6-3 actually test the sensors ? He said it went through the sequence of stopping at Black, Color & Free for 5 seconds each. I assume this would mean that the sensors & clutch were working fine, but I'll verify it visually. I know about the problems with the dive units on the Pastels, we've got enough of those out.

Is it warm enough yet to get the Wave Runners out ?

[JustManuals]

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Paul@justmanuals.com

[OMD-227]

Yeah, sim 6-03 tests the sensors in the rear frame. The clutch drives the belt unit cam until sensor is activated. I have had cases in the past where I thought it would be a problem main drive unit for sure, but turned out being toner spray inside one of the belt position sensors. A good way of checking these sensors is not only sim 6-03, but also remove the belt unit, run sim 30 and insert a folded piece of paper inside each sensor to watch it activate on the op panel. Clean them out while you're there too.

Is it warm enough yet for the ski??? When has that ever stopped me? I ride all year buddy!!

[tmaged]

Wazza, 6-3 evidently doesn't check the sensors. I checked them through 30 & they worked fine. In 6-3 it would go through the sim as if it was working black>color>free but with the front door cheated & cleaning unit down, they never moved. I pulled out the belt & checked the gear in 6-3 & it turned. WTH ? Went through it all again & when I checked the gear again I reached in to put some pressure on it & it stopped. The Pin inside was gone. I turned visually but when you put the belt in & put some pressure on it, no go.
Thanks for the help !

[OMD-227]

Thats interesting. I've always noticed that sim 6-03 would check sensors, because I've had one of the rear sensors out of the machine before, tried running sim 6-03 and it would always pause, then stop the test as it detected the sensor was missing. Thats weird.

You are right, and as I said above too, sim 30 is another good way of checking them. They normally dont go bad those sensors, but I have had a few over the years. Mainly they get contaminated and cause similar problems as if they were faulty.

So you had the famous cracked drive gear? We see that all the time. The drive gears across the series are the same, so you can use any drive gear..... just dont loose the pin. It usually falls just down near the PS/rego unit.

I'm still curious how a non-rotating belt causes L4-06. Whenever we get a broken/cracked belt drive gear, it either causes really bad registration or a loud banging noise due to the secondary belt unit rubbing against the non-rotating primary belt. But, a nice fix anyway!

[tmaged]

Nope, it was the one on the inside rear frame the drives the sep gear on the belt unit. The belt itself was turning. It's section 60 #1 in our parts guide.

[OMD-227]

OK, now that makes sense.

Haven't had that before, but will remember this one. Thanx.