There was a change in August 2010 regarding the bearings seizing up, they had an extra ring added inside. The only other bulletins referencing fusing issues was from 2008 production. Probably long since resolved, it was just a poly slider added to the e-ring to prevent catching.
If your bearings don't have the additional ring inside them, it's pre August 2010, but that still leaves a very narrow gap from March to August - about the best you could do.
Cthulhu for president! Why settle for the lesser evil?
Originally Posted by Akitu
Yeah, I just found this again : http://www.sharp-idncservice.com/idn...MFP-TB-454.PDF
Yeah, when we get an L4-16 and it is a fractured actuator, we order all the parts with the poly slider and all. Still see them fracture again on down the road....and as early as a month later. ha
I haven't been able to verify the problem that when the copier is powered down incorrectly, it could cause the actuator to be in the wrong position when powered back up.
"You can't trust your eyes, if your mind is out of focus" --
I can verify this; it can and will break the actuator flags. The sub power should go off first, when screen is black, the main power gets turned off. If the main power is tripped, the pressure stays on. Not only will this break fuser parts, but it can give some real nice flat spots on the press roll.
Failing to plan is planning to fail!!!
Now, this is interesting..... this latest customer when she gets a jam, she has been known to kill the main power (despite my best efforts), but I didn't make a connection to this issue.
Wow, awesome.... Thanks for this!I can verify this; it can and will break the actuator flags. The sub power should go off first, when screen is black, the main power gets turned off. If the main power is tripped, the pressure stays on. Not only will this break fuser parts, but it can give some real nice flat spots on the press roll.
It's all about teaching (if possible) the customer (and unfortunately, some techs) that throwing the main power switch first or pulling the AC cord is not the way to shut down the copier.
Thanks Mojo for confirming what I had suspected.
"You can't trust your eyes, if your mind is out of focus" --
Most of the ones I'm seeing are the B401 fusers, and most of the time it's the cam splitting, and just falling off in the bottom of the fuser.... Its a shame you cant use the mono fusers (B42FU1) as these things NEVER give that code. Not to mention the press rolls can look like deep fried sausage and the CQ is still good.
I'll confirm from techs that have done it to themselves. You can't pull the fuser unit until the fuser is in the pressure off condition. If you do, the first thing the machine does at power up is bust the flag, with a distinct crunch.
That's been our experience. I just can't imagine where the load is coming from on the miniscule flag, weighing a few grams, resting on cam, with a light return spring. I can only think that the cam has some sort of inherent weakness in the molding process that is exacerbated by the constant heating and cooling of the fuser environment.
And thanks for the bulletin, by the way. =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
The B401 still used the C32FU1. It wasn't until the B402 and B402SC that the B42FU1 was introduced. Zero issues and a breeze to rebuild.
B401 also had a black DV cart instead of a DV unit and developer on the B402 and B402SC.
Pretty solid boxes with the exception of fuser and doc feeder.
I am curious about something while we are talking Frontier machines............................
In our North American manuals, the secondary transfer unit (color and mono) is listed as MX-C31U2 and is rated at 60k life span. There is another Sharp part, MX-B42U2, it is rated at 120k. I have been using the B42U2 on B401,402,SC machines for over a year now with twice the life span and zero problems.
Does anyone else use these?
When this is searched in Sharp web sites, no results are found. There is no mention of it in any manual I have found. I even asked a few Sharp guys and they had never heard of it.
Failing to plan is planning to fail!!!
See attached bulletin. The actuator for the fuser pressure has been changed again. The new one has an A4 stamped on it. I have had new machines and new fusers from Sharp with the A3 version of the actuators installed in them. I check all new machines and fusers for the new actuator. I also verify that the pressure plate is white.
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