Original Call for finisher function disabled. I 906 reset, and then got a C8040 belt error. Cleaned sensors, reseated all connectors etc. Rear solenoid and gear appeared normal. Wondering if reseating connections on PCB might have been part of the cure? Have any of you seen this model/issue before?
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Re: DF470 C8040 error.
You have a sensor problem. This finisher's sensors have been a real problem for us to the point where we all carry at least ten in our car stock. What model are you working on? The 906 reset does not work on the models that use this finisher, it is located in the systems menu under service to reset a repaired finisher. The sensor is easy enough to get to as it is located on the back side of the finisher. Reseating connectors will do nothing for you, just replace the sensor. -
Re: DF470 C8040 error.
we tend to just exchange the whole finisher or sell a new machine depending on age... what a dog those DF-470's have been!Comment
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Re: DF470 C8040 error.
Yea we just started working on Kyocera's and i have this very intermittent code. But when i look in the DF 470 parts manual , it doesn't list the sensor as " Belt Sensor" or the solenoid as " Belt solenoid " , just sensors and solenoids , so its hard to tell which to order. The service manual lists them as Belt Sensor and Belt Solenoid , but not the parts manual.Comment
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Re: DF470 C8040 error.
Funny story about this code: I ordered three of these sensors new and none of them worked. Then I started digging through my miscellany. After trying ~50 Sharp73 sensors I found exactly two that changed state properly.
"C8040" error, during initialization, DF-470.
Belt sensor BLS does not change state at finisher controller board CN10 pin3 to frame ground (signal: BRS). Defective Sharp 73 sensor stays at 1.73vdc blocked or unblocked. Good sensor changes state 0.15 unblocked > 4.91vdc blocked. To diagnose run Reset Disable Function. Leave top finisher door open so that the MFP does not error out during initialization. Test BLS with door open.
Run reset disable function: System Menu/Counter > ^/v to Adjustment/Maint. > ^/v to Service Setting > username: 2500, password: 2500 > ^/v to Enable Repaired Unit > Start. I tested nearly 50 sensors until I found (2) that changed state properly (305JA70070).
=^..^=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 =^..^=Comment
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Re: DF470 C8040 error.
Like most Kyoceras, they do not make it easy to diagnose the accessories. Even when there are U031 functions to test the sensors I don't necessarily trust the results, and here's why: Sharp 73 sensors trip at >~3.5vdc hi, <~3.5vdc lo. Naturally it's desirable to get 4.91vdc hi, 0.15vdc lo, but that's not always the case. If your specific sensor goes hi to 3.55vdc it may or may not read hi to the machine, and U031 will never tell you that. =^..^=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 =^..^=Comment
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Re: DF470 C8040 error.
Are these logic levels from the sensors going back to the main PWB? Or another board? The problem you describe is problematic because it takes away U031 as a reliable troubleshooting tool and you're relegated to using a voltage meter and that's sometimes a big pain in the ass.
But I'm still unclear on something. I assume the input voltage for the sensor is +5vdc and the signal voltage will vary between 3.55 and 4.91vdc? I have other questions, but is that correct?Adversity temporarily visits a strong man but stays with the weak for a lifetime.Comment
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Re: DF470 C8040 error.
Well the machine sensors go to the copier's main PWB. The finisher sensors go to the finisher controller. The DP sensors go to the DP controller. The only real hard part of reading pinouts is finding the connector and pin number at the appropriate controller.
Sensor supply voltage is +5.0vdc. Typical output is 0.15vdc lo, 4.91vdc hi ... but every sensor is a little different, especially when they're failing. It's the function of the main PWB to decide if it's getting a lo or hi signal and that lo/hi threshold is at +3.5vdc. Did I express that a little more clearly? =^..^=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 =^..^=Comment
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Re: DF470 C8040 error.
Here's where I'm going with this. Correct me if I'm off base. You said that sometimes U031 wasn't always reading 3.55vdc as hi but the machine was seeing it as hi. Is this a design flaw or is the signal voltage @ sensor just not reaching the desired threshold that U031 is looking for?
I've seen sensors that were cheap and unreliable not reach the desired signal voltage but I've also found that the signal was being slightly pulled down due to faulty micro-capacitors @ whatever board they go to.Adversity temporarily visits a strong man but stays with the weak for a lifetime.Comment
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Re: DF470 C8040 error.
PS - The reason this came to mind is that once I ran into a similar problem. I tired several new sensors none worked. I then started installing different sensors that were native to other machines. I finally found one that worked. Later a tech bulletin was released that explained the board was pulling the signal voltage down just enough to cause problem. The voltage was in no-man's land. The reason a sensor from another machine worked is because it was able to overcome the slight voltage drop caused by the board.Adversity temporarily visits a strong man but stays with the weak for a lifetime.Comment
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Re: DF470 C8040 error.
Not this. The threshold for low/hi stays the same for U031 & the machine function, always. But the individual sensor output can vary widely.
That. The defective sensor does not always reach the threshold the controller needs to see, and it can be very intermittent. So an output of 3.55vdc hi would indicate to you that it's way too low, and very likely in the process of failing. Really, anything less than 4.75vdc hi is suspect.
This was common on a lot of the older Toshibas, but fairly rare on Kyoceras. The 5.0vdc tends to drop off with age (10+ yrs). Weird unexplained document feeder jamming can be caused by that 5.0vdc supply voltage edging toward 4.85-4.90vdc. On those older Toshibas it was possible to find the VR on the power supply that adjusts the 5.0vdc supply output, and adjusting it to 5.03vdc. The most fortuitous result was finding that the VR had corroded in that one contact area, and just turning it back & forth a few times scrapes away the corrosion. The other possibility is gradual failure of the power supply, and compensating could buy you a little time. If you had to come back a second time for the exact same issue it usually meant that the power supply had sagged further. It was easiest to access the 5vdc supply voltage on the document feeder connector at the document feeder controller.
I have never diagnosed a Kyocera for this issue, but I imagine that it's certainly possible. =^..^=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 =^..^=Comment
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