[Misc] [Posible Solution] Error Code - SC 390/392

[rich1106]

Hello Everyone. Hope All of you are having a nice day/night.

I don't know if this is the right seccion, if is not. Please tell me and I will moved (if i can, of course).

Today, I want to share my experience with a machine. A few days ago, a machine consistently showed me the codes SC390 and SC392. I changes everything (Developer, ID Sensor, TD Sensor, Drum, OPC Unit, Main Board.. etc, etc) It got me CRAZY!. I looked for information and help everywhere with no success. But thanks to the manuals and a little bit of logic I finally find the solution (or posible solution, it might not work everytime. I think).

So, first of all the manual said this:

Code

390

Description

TD sensor error
The TD sensor outputs less than 0.5V or more than 4.0V 10 times consecutively during copying.

CausesCode

392

DescriptionCauses

Simple, Isn't it?. Well, think again... Is not always simple, believe me. As i'm ready said, I changed everything and tried everything with no succes. So, I read the manual many, many times till I find a work around.

The tone supply process is this: The machine constantly check the TD Sensor Value (Vt/Vts) and compare with the References Value (Vref), if the Vt/Vts value is higher than the Vref. the machine initiate the supply toner process. If the Vref value is higher than the Vt/Vts, the machine doesn't start the process. In my case, the machine showed me this values Vt/Vts 0.60/1.10 or below and Vref 2.50 (normal values). The quality was horrible. in some cases almost blank copy.

So, whats the solution?. This is the solution...

I found this SP Codes:

2929 - Vref Adjusment

2929 1 Upper Limit
Adjusts the upper limit for Vref. [0.00 ~ 5.00 / 3.10 / 0.01 V/step]
2921 2 Lower Limit
Adjusts the lower limit for Vref. [0.00 ~ 5.00 / 1.40 / 0.01 V/step]

As i'm ready explain. If the Vt/Vts value is higher than Vref Value the machine starts the supply process. With this code you can stablish an specific Vref value. In my case, when the Vt/Vts reach 1.10 or higher the quality go down considerably. So, I put my own values for the Vref Lower 0.50 and Upper 1.00. and this solved the problem. The machine start the process normaly.

This is a simple solution and works really well. This can be used in this models - 2027/2022/2550/3010/161/2020/1600/MP2000/1515


I Hope this information help somebody in the future . Sorry if i talk too much, I wanted to explain as much as possible.


PS: As a final note, i want to say this: Sorry for my english, I'm still learning if you see some errors in my gramma. Now you know why .

[Mark Bbb]

Re: [Posible Solution] Error Code - SC 390/392

Well, you don't beat about the bush on information I can tell...
But I'm sure you can also tell us on what machine this issue is happening, that would be easier to troubleshoot.
By the way, there are English spoken people on this website who make themselves not even half as clear as you are, now...
So, keep up the good work!
Greetings,
Mark

[slimslob]

Re: [Posible Solution] Error Code - SC 390/392

The next time you have to replace the developer and initialize the developer, process control will change those settings.

[rich1106]

Re: [Posible Solution] Error Code - SC 390/392

Well, you don't beat about the bush on information I can tell...
But I'm sure you can also tell us on what machine this issue is happening, that would be easier to troubleshoot.
By the way, there are English spoken people on this website who make themselves not even half as clear as you are, now...
So, keep up the good work!
Greetings,
Mark

Oh, yeah. I miss that. I had this problem in this models: 2020 and 2027/MP2550.

Thanks for the feedback!.

Rich.

The next time you have to replace the developer and initialize the developer, process control will change those settings.

Yeah, I know that. But as I said, I tried everything with no success. I initialize the developer many times and the result was always the same. But I solved the problem doing what I explain.

Thanks for you comment.!

Rich.

[copier tech]

Re: [Posible Solution] Error Code - SC 390/392

Hi Rich,

Thanks for the info!
Did you try updating all the fimware files before you replaced all those parts!?

[rich1106]

Re: [Posible Solution] Error Code - SC 390/392

Hi Rich,

Thanks for the info!
Did you try updating all the fimware files before you replaced all those parts!?

The fimware can cause that problem? I didn't know that.

[sandmanmac]

Re: [Posible Solution] Error Code - SC 390/392

This is a simple solution and works really well. This can be used in this models - 2027/2022/2550/3010/161/2020/1600/MP2000/1515

While I Appreciate your efforts, and the information, I can't help but think that there must be something you're doing that's causing you to have these issues.
I mean, you stated that you've had it on several occasions , and I've personally never experienced or heard from others needing to take such drastic measures to resolve these error messages.
This range, along with their successors, have been my most common units through the years.
I suspect the machines are throwing these SC's based on service procedures that you're creating yourself - most likely by using generic parts and/ or supplies.
You may have solved the issue for now, but I doubt that it's gone for good.

Just my 2

[slimslob]

Re: [Posible Solution] Error Code - SC 390/392

I initialize the developer many times and the result was always the same. But I solved the problem doing what I explain.

Thanks for you comment.!

Rich.

Developer initialization should only be ran once after replacing the developer, otherwise you will have problems. If you want to run it again, change the developer.

[rich1106]

Re: [Posible Solution] Error Code - SC 390/392

While I Appreciate your efforts, and the information, I can't help but think that there must be something you're doing that's causing you to have these issues.
I mean, you stated that you've had it on several occasions , and I've personally never experienced or heard from others needing to take such drastic measures to resolve these error messages.
This range, along with their successors, have been my most common units through the years.
I suspect the machines are throwing these SC's based on service procedures that you're creating yourself - most likely by using generic parts and/ or supplies.
You may have solved the issue for now, but I doubt that it's gone for good.

Just my 2

No, no. I did nothing different from what I always do. The machine showed me this error one day to another. The first one was a 2027, I solved the problem. Then a few days later a 2020 showed me the same problem, but in this case the machine never showed any error code. It was just a quality problem and this works with that too.

I just changed this values right know, before this I never knew about this codes.

Developer initialization should only be ran once after replacing the developer, otherwise you will have problems. If you want to run it again, change the developer.

Yep, I know that. I never initialize the developer if not necessary.

Rich.

[Mark Bbb]

Re: [Posible Solution] Error Code - SC 390/392

Why don't you use the "pcu 1027"?
Ever part is already installed, so there is no need to (dis)assemble any part.
And when you switch of the machine with the main switch before replacing it, the pcu will initialize itself correctly...
No trouble, no worry, no asking at Copytechnet...
So???

[rich1106]

Re: [Posible Solution] Error Code - SC 390/392

Why don't you use the "pcu 1027"?
Ever part is already installed, so there is no need to (dis)assemble any part.
And when you switch of the machine with the main switch before replacing it, the pcu will initialize itself correctly...
No trouble, no worry, no asking at Copytechnet...
So???

the 2 parts that were completely new was the Developer and TD Sensor. I take the other parts of another machine that was 100% function with brand new parts. I know this is not the best idea but, remember? madness, desperation...

and I didn't ask here cause I always have every kind of problems and I always find a solution learning someting new in the process. I have 7 years working with Copier Machines (Ricoh Only) and this is why I love this job, no matters how long you have been worked... You always learn something new .



BTW. Thanks you very much for your comments and advices, guys. I really appreciate it and remember. This is not the first thing you should do to solve this problem, it is only for cases where all else has failed. That why I called "Posible Solution". Again, thank you very much!.

Rich.

[vitalra]

Re: [Posible Solution] Error Code - SC 390/392

of Ricoh MP2000 aficio I have a sc390 error, use original toner, drum and cleaning I
changed the blade. It has 65000 copies. I checked the following values in sp mode:
2.926 standard VT 250x0.01
2.929 Vref limit upper 320x0.01
2.929 Vref limit lover 70x0.01

VSG 4.00
VSP 4.03
PWM 156
VSDP 4.00
VT O.OO
VT 2.49

even after 9 copies are so values. as I am?

[Mark Bbb]

Re: [Posible Solution] Error Code - SC 390/392

the 2 parts that were completely new was the Developer and TD Sensor. I take the other parts of another machine that was 100% function with brand new parts. I know this is not the best idea but, remember? madness, desperation...

and I didn't ask here cause I always have every kind of problems and I always find a solution learning someting new in the process. I have 7 years working with Copier Machines (Ricoh Only) and this is why I love this job, no matters how long you have been worked... You always learn something new .



BTW. Thanks you very much for your comments and advices, guys. I really appreciate it and remember. This is not the first thing you should do to solve this problem, it is only for cases where all else has failed. That why I called "Posible Solution". Again, thank you very much!.

Rich.

Sometimes you want to save money by not replace to many parts, but in the end you might encounter problems like these: sc390,...
So, in the end this will be a more expensive thing!