MP 6000 SC672

[tsbservice]

Re: MP 6000 SC672

Did you tried different RAM?

[orestesp]

Re: MP 6000 SC672

try to replace the usb cable of the keyboard, with a flying one to see what happens, secondly, the usb compliance says that on all the usb ports in the world, there is always a small smd protection fuse near the port (for overloads) try to find it and check.

Hello,

I do not know if the newer models use a typical USB 2.0 cable, but on my machine the operation panel is only connected with some sort of a 14 pin (if I remember correctly) JST connector. Moreover, I have absolutely no idea where this cable ends up on the back side of the machine. No cables connect directly to the control board. The control board is only connected to the rest of the system through some sort of daughter board with a custom black connector. I also fail to find any cable that might be connected on the daughter board and could be the one connected to the operation panel.

I can check if there is a fuse on the operation panel but I doubt there is a fuse on the control board, since I checked the service/parts manual and although it doesn't have the schematics for the board, one of them does have a complete list of all the components that are present on the board and there seems to be only one fuse, FU1, a 2A fuse.

[luca72]

Re: MP 6000 SC672

try to replace the usb cable of the keyboard, with a flying one to see what happens, secondly, the usb compliance says that on all the usb ports in the world, there is always a small smd protection fuse near the port (for overloads) try to find it and check.

[orestesp]

[orestesp]

Re: MP 6000 SC672

check the fuses on the controller board

I did have my mind as well on blown fuses on the controller board and had taken a quick look around but I couldn't see any. Can you point me to their relative location on the board, if you remember?

Also check all the outputs from the power supply. And if you have one available check the +5 outputs with an oscilloscope for RF noise. That can drive boards bananas.

Are we talking about the HV power supply on the bottom right? I have checked the glass fuses on it and none were blown, but I didn't check for output voltage.

In general, are there any schematics for those boards to make life easier?

Merry Christmas to you both.

[slimslob]

Re: MP 6000 SC672

check the fuses on the controller board

Also check all the outputs from the power supply. And if you have one available check the +5 outputs with an oscilloscope for RF noise. That can drive boards bananas.

[GIUBOSS]

Re: MP 6000 SC672

Well, I removed the controller board entirely from the machine, started it up, same exact behavior before throwing a SC672 again, re installed the controller and restarted the machine to the same problem.

I also noticed that the SMD LEDs on the other boards (for example, the BCU) are lighting up, while the LEDs on the controller board (pictured - top left of the PCB) are not. This is just an observation, however.

I guess I will be ordering a replacement controller board.

When replacing it with a good used one, do I only have to transfer the NVRAM to the replacement controller board, as the manual says? If the replacement controller board, for example, comes with an older firmware version, can I just transfer the SD cards from the original board to the replacement?

[ATTACH=CONFIG]51229[/ATTACH]

check the fuses on the controller board

[orestesp]

Re: MP 6000 SC672

there may be residual electrostatic charge inhibiting the controller

Well, I removed the controller board entirely from the machine, started it up, same exact behavior before throwing a SC672 again, re installed the controller and restarted the machine to the same problem.

I also noticed that the SMD LEDs on the other boards (for example, the BCU) are lighting up, while the LEDs on the controller board (pictured - top left of the PCB) are not. This is just an observation, however.

I guess I will be ordering a replacement controller board.

When replacing it with a good used one, do I only have to transfer the NVRAM to the replacement controller board, as the manual says? If the replacement controller board, for example, comes with an older firmware version, can I just transfer the SD cards from the original board to the replacement?

0-02-05-80841786408d275bc347ff6d337f564e16d780b0b1b3b93151f082c800e21030_ef11f831a6716aa9.jpg

[GIUBOSS]

Re: MP 6000 SC672

Hello,

What will happen if I take the controller board out?

Sent from my Redmi Note 5 using Tapatalk

there may be residual electrostatic charge inhibiting the controller

[orestesp]

Re: MP 6000 SC672

Try turning on the machine without the controller board. Then reinstall (all with the machine off of course).

Hello,

What will happen if I take the controller board out?

Sent from my Redmi Note 5 using Tapatalk

[GIUBOSS]

Re: MP 6000 SC672

I am 100% certain that absolutely no one has messed with the SD card, or the machine in general. The last time anyone has touched it was a couple of months ago when I did some PM work on it. It's a classic case of "it worked just fine the day before".

I just removed the cover from the SD cards, blew some air into the contacts on the motherboard (they were clean but you never know) re insterted them in the same position as they were as well, nothing again. Also I am 100% sure both sliders on the SD cards were in the original position as they where when the machine was working.

Try turning on the machine without the controller board. Then reinstall (all with the machine off of course).

[orestesp]

Re: MP 6000 SC672

Is there a possibility that someone may have removed a SD card such as the JAVA card without properly stopping JAVA? If so, the controller board is cratered.

I am 100% certain that absolutely no one has messed with the SD card, or the machine in general. The last time anyone has touched it was a couple of months ago when I did some PM work on it. It's a classic case of "it worked just fine the day before".

I just removed the cover from the SD cards, blew some air into the contacts on the motherboard (they were clean but you never know) re insterted them in the same position as they were as well, nothing again. Also I am 100% sure both sliders on the SD cards were in the original position as they where when the machine was working.

[slimslob]

Re: MP 6000 SC672

Is there a possibility that someone may have removed a SD card such as the JAVA card without properly stopping JAVA? If so, the controller board is cratered.

[orestesp]

Re: MP 6000 SC672

Disconnect any and all features in the back, including memory card(s), fax, HDD, etc. Yes you lose certain functions, but all you are looking for at that point is to see if that code goes away.

On my Konicas when I suspect HDD I make it unset in service mode followed by physical removal of data and power cables from HDD just to make triple sure machine has no any clue about HDD
In that process I usually lose more time to remove covers over HDD than other operations.

Disconnected both the HDD completely and then the NIC/USB card (no other expansion cards are present, such as the FAX card which could cause this cause if the jumpers are set incorrectly) but no change.

I will try to find two different sticks of RAM to try it with, but I am afraid we are headed towards replacing the controller.

[copier tech]

Re: MP 6000 SC672

The MP 6000 is too old now however if you want to try a firmware update feel free to contact us.