[Electrical] Sharp mx m264n blank screen

[Latruns]

Hello i was called to check this machine sharp mx m264n that the machine is not working, i found that engineer working on it before spoil thescreen flex and i changeit to bew one when i switch it on the machine start but it not display logo just white screen. And the screen is communicate when i touch it. Appreciate for your response

[driving lots of miles]

Re: Sharp mx m264n blank screen

I would first check if the light and dark settings for the screen are set too bright. Second, I would reseat all of the connectors.

[Latruns]

Re: Sharp mx m264n blank screen

I would first check if the light and dark settings for the screen are set too bright. Second, I would reseat all of the connectors.

Thanks but there is no way to check maybe the screen was set to light or dark because the machine displaynothing no language information secondlyi have seat all the plug connectors. Appreciate

[driving lots of miles]

Re: Sharp mx m264n blank screen

Thanks but there is no way to check maybe the screen was set to light or dark because the machine displaynothing no language information secondlyi have seat all the plug connectors. Appreciate

Maybe try a factory reset thru the web interface from the computer?

[Hansen88]

Re: Sharp mx m264n blank screen

We have to replace sd cards regular on these models for problems like this.

[driving lots of miles]

Re: Sharp mx m264n blank screen

We have to replace sd cards regular on these models for problems like this.

Thats good to know. I haven't had to replace any on this model yet.

[Latruns]

Re: Sharp mx m264n blank screen

Thanks to everyone that contribute to this it will take some days to back to the machine due to another work at hand and distance. I will try the sd card but with the lt i see there, the machine is running perfectly the screen touch is responding apart that not display i believe if there's no error on the screen the machine will print.

[Prints Charming]

Re: Sharp mx m264n blank screen

Just working through this one abit clearer.
Your device operates normally on network printing, has an operation panel which is only the white backlight, no GUI or display of any kind, and the touch panel works upon touching it?

That would tell me the issue is almost certainly one of the following:
* FFC White Ribbon Cable connection issue at SCU Board.
* FFC White Ribbon Cable connection issue at LVDS Board.
* An LVDS Board issue.
* A SCU Board issue.

The SCU Board controls the Scanner & Operation Panel
The LVDS Board (within the operation panel unit) converts the data signal from the SCU Board to the operation panel & controls touch operation.

You've mentioned a previous tech worked on the operation panel. I'd be going back over that work and confirm the harnesses within the operation panel, especially the FFC White Ribbon Cables, are properly connected at both ends (LVDS and SCU Board).
The device is working, but just has no display. That is almost always a harness issue in my experience.

[Latruns]

Re: Sharp mx m264n blank screen

Thanks all for your support at last the machine is in order now i change the scu board and memory board and reprogram it cost me time and money. Appreciate you all