MPC2003,Machine show ready,but Temperature doesn't rise

[Popolopo]

I got one machine MPC2003, suddenly just refuse to print. Machine show ready but when check on SP Mode, the temperature didn't rise at all. Sometimes, it throw SC551-02. Already try change fusing and power supply unit, still the same. Try old fusing on other machine, it work well. Then I try change control board, IPU,IO, thermopile, still the same.

Any help?

[Gift]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

I got one machine MPC2003, suddenly just refuse to print. Machine show ready but when check on SP Mode, the temperature didn't rise at all. Sometimes, it throw SC551-02. Already try change fusing and power supply unit, still the same. Try old fusing on other machine, it work well. Then I try change control board, IPU,IO, thermopile, still the same.

Any help?

Perhaps some issue with the fuser connector. Back in the days it was pretty common to find pieces of paper inside the connector. That's probably unlikely since the user can't oull out the fuser anymore without using a screwdriver. Still it might not hurt to take a close look. Another possible issue might be a faulty fuse - did you check them with a multimeter?

On the other hand I think a faulty fuse should lead do different SC codes.

[UNICORNico]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

SC 551-02
Edge NC Sensor Disconnection
3ED - 3FF (FB voltage: 3.243V-3.300V) is detected for (t13) seconds continuously (NC sensor center: detection & compensation NC sensor edge: detection & compensation).
Detection period: 100 ms, detection frequency: 10 times or more.
• NC sensor disconnection
• Connector disconnected
• Replace the NC sensor
• Reset the connector
• Replace the connector
• Replace the fusing unit
SesorNC.jpg
SesorNC.png - Google Drive
According to this and from my experience, you have a problem with these fuses, and you should change them.
That it does not generate problems in another machine, does not rule out the problem since this code requires a reset of the SC-Fusing but with the previous change of the fuses that I have indicated in the image.

[Popolopo]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

Perhaps some issue with the fuser connector. Back in the days it was pretty common to find pieces of paper inside the connector. That's probably unlikely since the user can't oull out the fuser anymore without using a screwdriver. Still it might not hurt to take a close look. Another possible issue might be a faulty fuse - did you check them with a multimeter?

On the other hand I think a faulty fuse should lead do different SC codes.

Thanks for reply.

I already try change fusing harness and power supply unit(from good working machine).
Basically, the current machine is with good working PSU, Fusing, fusing harness, light blue cable on fusing harness, thermopile, IOB, IPU, Controller board. Reset all the SC code, memory clear. Machine show ready but temperature stay low.

[Popolopo]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

[ATTACH=CONFIG]59438[/ATTACH]
SesorNC.png - Google Drive
According to this and from my experience, you have a problem with these fuses, and you should change them.
That it does not generate problems in another machine, does not rule out the problem since this code requires a reset of the SC-Fusing but with the previous change of the fuses that I have indicated in the image.

I did change NC sensor. Reset SP 5-810-01 and 5-810-02 with fuse. Machine turn on without code and show ready when select COPY. The fusing doesn't have any noise or show any sign it working and the temperature stay low.

In your experience, did SC551-01 or SC551-02 happen quite often?(in the same machine after change it?)

[GIUBOSS]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

Have you checked all sc history codes, FW update??

[Popolopo]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

Have you checked all sc history codes, FW update??

Did firmware update. Unfortunately, other tech already did memory clear. Can't check previous SC history code.

[UNICORNico]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

Did firmware update. Unfortunately, other tech already did memory clear. Can't check previous SC history code.

[GIUBOSS]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

Did firmware update. Unfortunately, other tech already did memory clear. Can't check previous SC history code.

Was it reset completely? Have you tried clearing all memory (saving factory settings first)

[UNICORNico]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

I did change NC sensor. Reset SP 5-810-01 and 5-810-02 with fuse. Machine turn on without code and show ready when select COPY. The fusing doesn't have any noise or show any sign it working and the temperature stay low.

In your experience, did SC551-01 or SC551-02 happen quite often?(in the same machine after change it?)

Of the different machines, it has not been the most common, and it happened to me on a higher model (MPC4503).
Once the NC Sensor was replaced, and the SC-Fusing reset, the machine started up normally. It catches my attention that you indicate that the machine says "READY" once the replacement has been made, but that the temperature remains "LOW"? According to your perception, but have you tried giving it work and seeing if the device responds correctly?


You can perfectly have an active Energy Saving system so that the Fuser Unit remains off and waits to be activated once work is ordered. I would check that, these models have 2 energy saving systems, one for the general assembly and another exclusive for the Fuser.

[Gift]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

Yeah memory "all" clear is a bad idea - get the birth sheet with the factory non-defaults and edit them. Usually a memory all clear does not lead to fuser issues but it makes sense to edit the SP modes according to the informations from the birth sheet and gibe it another shot.

[Popolopo]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

I don't know what the train thought of previous tech. Maybe they thought after all the board been replace, it's time to do memory clear all.

The update after tinkering around. Finally the center temperature show -50 degree, but the machine say it ready to print but never gonna happen as temperature never rise.

After change again another fusing and thermopile, still showing -50 in middle. I'm guess wiring issue.

[Gift]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

minus 50 degrees?

Did you find the birth sheet and restore the SPs ?

[Popolopo]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

minus 50 degrees?

Did you find the birth sheet and restore the SPs ?

At least the machine acknowledge something wrong with it instead of showing room temperature. Not yet, already off work. Will attend to it later

[UNICORNico]

Re: MPC2003,Machine show ready,but Temperature doesn't rise

I don't know what the train thought of previous tech. Maybe they thought after all the board been replace, it's time to do memory clear all.

The update after tinkering around. Finally the center temperature show -50 degree, but the machine say it ready to print but never gonna happen as temperature never rise.

After change again another fusing and thermopile, still showing -50 in middle. I'm guess wiring issue.

It is quite strange that it indicates Negative Temperature.
I have seen this, when the Fusion Unit is not installed and by not receiving information from the sensors, the system registers or displays a negative range.
In theory this would be confirmation that the problem is with the wiring, the strange thing is that the device indicates "READY", when it is a lie.
I think the problem is in the Nv-RAM. It may be corrupted and generating abnormal behavior. In the event that you replace it with another, I would recommend NOT UPLOADING the backup data, so as not to contaminate the new chip, and configure the device with zero values.