MP W2401 constant SC392 error

[PastaGarry]

Hi all, tried to post a thread a week ago about a sensor issue on this machine which never seemed to show up? Either way, I managed to fix that issue which I will mention in a moment.

This machine was bought as a working unit however has been transported VERY roughly and as such is now a bit of a basket case. The transport company had to dismantle the machine to get it out of its previous location and were pretty heavy handed when reassembling it, resulting in missing screws on the panels, bent sheet metal edges, and a mashed connector for the front door sensors which I had to straighten all the pins on. It has also been tipped on end with toner still inside the machine resulting in a mess that had to be cleaned up from the right hand side around the waste toner bottle.

After finally getting it to initialise, the machine now throws an SC392 whenever it tries to run the drum/dev unit. For example, if you tell it to make a copy, it will scan the document in, then immediately throw the error when it tries to start the print section. Looking in the service manual says that on this machine, this code refers to an issue with the development bias. I have checked all the cables going to the high voltage supply and everything seems fine there. Also checked all fuses and they are all good. I've also tried to reinitialise the developer in SP mode but it just immediately says "failed" with no further explanation.

I admit i'm a little out of my depth here, but this is an old, secondhand machine which was gotten rid of due to scarcity of parts. Just trying to get some more use out of it before it heads to the scrapyard, if that's even possible at this point. Greatly appreciate any help.

[Phil B.]

Re: MP W2401 constant SC392 error

Hi all, tried to post a thread a week ago about a sensor issue on this machine which never seemed to show up? Either way, I managed to fix that issue which I will mention in a moment.

This machine was bought as a working unit however has been transported VERY roughly and as such is now a bit of a basket case. The transport company had to dismantle the machine to get it out of its previous location and were pretty heavy handed when reassembling it, resulting in missing screws on the panels, bent sheet metal edges, and a mashed connector for the front door sensors which I had to straighten all the pins on. It has also been tipped on end with toner still inside the machine resulting in a mess that had to be cleaned up from the right hand side around the waste toner bottle.

After finally getting it to initialise, the machine now throws an SC392 whenever it tries to run the drum/dev unit. For example, if you tell it to make a copy, it will scan the document in, then immediately throw the error when it tries to start the print section. Looking in the service manual says that on this machine, this code refers to an issue with the development bias. I have checked all the cables going to the high voltage supply and everything seems fine there. Also checked all fuses and they are all good. I've also tried to reinitialise the developer in SP mode but it just immediately says "failed" with no further explanation.

I admit i'm a little out of my depth here, but this is an old, secondhand machine which was gotten rid of due to scarcity of parts. Just trying to get some more use out of it before it heads to the scrapyard, if that's even possible at this point. Greatly appreciate any help.

I would place a claim with the company that transported it ( don't mention that you have messed with it )

Sounds like tilting it has let some dev power leak or has messed up the sensors that control the dev unit.

since you have the manual, take the claim forward. If denied at least you have us and the manual

but the utter destruction of the unit should sway in your favor...

do you have a buddy that's a lawyer?

[PastaGarry]

Re: MP W2401 constant SC392 error

I would place a claim with the company that transported it ( don't mention that you have messed with it )

Sounds like tilting it has let some dev power leak or has messed up the sensors that control the dev unit.

since you have the manual, take the claim forward. If denied at least you have us and the manual

but the utter destruction of the unit should sway in your favor...

do you have a buddy that's a lawyer?

Ha, I wish I had that option believe me. Sadly I don't have the authority to do that and my boss wouldn't want the hassle, even though he's the ones out of pocket...but alas, not my decision to make.

Any suggestions before we call it a total loss?

[Phil B.]

Re: MP W2401 constant SC392 error

Ha, I wish I had that option believe me. Sadly I don't have the authority to do that and my boss wouldn't want the hassle, even though he's the ones out of pocket...but alas, not my decision to make.

Any suggestions before we call it a total loss?

re: Boss you mean as far as the claim?

then we (i'm sure) can help you but you will have to start with the manual. Start with the error code.

try to get into service mode and record the errors.

post list here.

[slimslob]

Re: MP W2401 constant SC392 error

Was it toner that pored out from being tilted to one end or was it developer. If it was tilted to the end where the development bias connection is the connector block may be contaminated with toner/developer causing a short to ground. On the other hand you may have a damaged development unit bias contact spring or ground contact causing little or no bias current. As for not being able to reinitialize the development unit if it was developer that dumped out or if the developer has all moved to one end of the unit. That would result in too litle developer on the TD sensor and throw an error.

I would recommend removing the DVU and inspecting it to include dumping all the developer. Who knows, you might even find some of the missing screws. If I remember correctly wide format require 2 bags of developer due to the length of the unit. While you have the DVU out also inspect/clean the frame side of the bias connection.

[PastaGarry]

Re: MP W2401 constant SC392 error

Was it toner that pored out from being tilted to one end or was it developer. If it was tilted to the end where the development bias connection is the connector block may be contaminated with toner/developer causing a short to ground. On the other hand you may have a damaged development unit bias contact spring or ground contact causing little or no bias current. As for not being able to reinitialize the development unit if it was developer that dumped out or if the developer has all moved to one end of the unit. That would result in too litle developer on the TD sensor and throw an error.

I would recommend removing the DVU and inspecting it to include dumping all the developer. Who knows, you might even find some of the missing screws. If I remember correctly wide format require 2 bags of developer due to the length of the unit. While you have the DVU out also inspect/clean the frame side of the bias connection.

To me it looked more like toner. Either way I think you're right about the developer being clumped at one end. And yes, it was tipped on the end where the bias connection is, I did give the connectors i could reach a good clean but as you said, probably need to clean the other side of it after removing the DVU.

I also just went through some SP checks, and found that the machine is also throwing an SC 521 which is related to the drum motor, and sure enough I cannot get either the drum or main motor to turn in the output check section. Would this be related to the bias issues or is this another unrelated problem? It seems to be throwing both the 521 and 392 codes at the same time but was only displaying 392 on the screen telling the user to turn the machine off.

[Phil B.]

Re: MP W2401 constant SC392 error

To me it looked more like toner. Either way I think you're right about the developer being clumped at one end. And yes, it was tipped on the end where the bias connection is, I did give the connectors i could reach a good clean but as you said, probably need to clean the other side of it after removing the DVU.

I also just went through some SP checks, and found that the machine is also throwing an SC 521 which is related to the drum motor, and sure enough I cannot get either the drum or main motor to turn in the output check section. Would this be related to the bias issues or is this another unrelated problem? It seems to be throwing both the 521 and 392 codes at the same time but was only displaying 392 on the screen telling the user to turn the machine off.

probably toner/dev/screws in the motor gears . something is binding those motors, now come the fun part, dis-assembley to find tha cause .

[slimslob]

Re: MP W2401 constant SC392 error

To me it looked more like toner. Either way I think you're right about the developer being clumped at one end. And yes, it was tipped on the end where the bias connection is, I did give the connectors i could reach a good clean but as you said, probably need to clean the other side of it after removing the DVU.

I also just went through some SP checks, and found that the machine is also throwing an SC 521 which is related to the drum motor, and sure enough I cannot get either the drum or main motor to turn in the output check section. Would this be related to the bias issues or is this another unrelated problem? It seems to be throwing both the 521 and 392 codes at the same time but was only displaying 392 on the screen telling the user to turn the machine off.

It could be related to the developer all clumped at one end preventing the unit from being able to turn. Hopefully after dumping the developer you will be able to turn it.

[PastaGarry]

Re: MP W2401 constant SC392 error

Well, looks like i'm pulling the dev then. I'll update this thread when I get around to removing it and let you know what i find, hopefully not a mangled set of gears and screws everywhere

[Phil B.]

Re: MP W2401 constant SC392 error

Well, looks like i'm pulling the dev then. I'll update this thread when I get around to removing it and let you know what i find, hopefully not a mangled set of gears and screws everywhere

after following techs on their ' problem units ' personally I wouldn't count on it.

Hell one time I found a number 6 torx in a Xerox machine the tech said " He lost ".

[PastaGarry]

Re: MP W2401 constant SC392 error

Well, this machine is continuing to fight me each step of the way...one of the 4 big chunky screws that hold the dev unit in is COMPLETELY stripped out to the point that even an extra large phillips screwdriver can't get any purchase. And this is one of the screws that doesn't have a hex flange around the outside. Any suggestions? Drilling it out would be a nightmare as its a very thick screw, I was thinking of cutting a slot in it with a dremel but combining flying sparks with toner dust would probably get a little too exciting...

[slimslob]

Re: MP W2401 constant SC392 error

Depending on how much room you have you might try using a geared plierench. If you have a tight enough grip you can actually flatten the sides of screw heads with them. They do not make them anymore but you can get used ones on places like ebay. A little pricy but if they do the job.

Eifel Geared Plierench — Rust Magazine.

[Phil B.]

Re: MP W2401 constant SC392 error

Depending on how much room you have you might try using a geared plierench. If you have a tight enough grip you can actually flatten the sides of screw heads with them. They do not make them anymore but you can get used ones on places like ebay. A little pricy but if they do the job.

.

Or use a dremmel to take down opposite sides of the screw head to get vice grips locked on.
Vac out the area before hand. Unless you get sparks in a cloud.. I don't think you can cause a fire.
OR
You just might wanna buy a new dev unit..
.bust the plastic tabs on the old unit.. then remove the screws and install new.

Sent from my SM-G960U using Tapatalk

[PastaGarry]

Re: MP W2401 constant SC392 error

Or use a dremmel to take down opposite sides of the screw head to get vice grips locked on.
Vac out the area before hand. Unless you get sparks in a cloud.. I don't think you can cause a fire.
OR
You just might wanna buy a new dev unit..
.bust the plastic tabs on the old unit.. then remove the screws and install new.

Sent from my SM-G960U using Tapatalk

I think i'll try the dremel as I already have one to hand. Though I suspect either way a new dev unit would be needed. Would it even be worth the money to get a dev for this machine given the age and condition? I know the previous owners apparently had trouble finding parts/supplies for it, hence why they upgraded in the first place.

[davel]

Re: MP W2401 constant SC392 error

Even Ricoh has trouble getting parts for these and they cost a bomb.