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MPM Accuflex, Lost Vision

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#74385

MPM Accuflex, Lost Vision | 13 August, 2015

We just encountered a problem with the vision on our MPM Accuflex. We just switched jobs and when we went through a 'Vision Set-up' there was no image (just blank gray screen where you'd normally see the PCB or bottom of stencil).

When we tried to 'run' the job the system couldn't find fiducials and there was only a blank gray field.

We tried the vision diagnostics and there was no image presented in the 'Look Down' or 'Look Up' state. The camera light came on, so I believe that power is getting to the camera assembly.

Has anyone else had this issue? Any suggestions?

Dean

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#74386

MPM Accuflex, Lost Vision | 13 August, 2015

I don't believe the lighting and camera have the same power supply. You have no image. The likely issue is the camera power supply of the camera itself.

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#74388

MPM Accuflex, Lost Vision | 13 August, 2015

Thanks for your reply. I have very little documentation for the machine. Any idea where the camera voltage might be detected/measured or where the PS for the camera is located? Is it part of the camera assembly?

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#74389

MPM Accuflex, Lost Vision | 13 August, 2015

The camera assembly is designated as X23; the stencil & board lighting as well as the camera video signal pass through the DB9 connector at the camera. There is a ribbon cable in the vision gantry tray that carries both to the box on the left side of the vision gantry. Inside the box is the X65 distribution card. The camera itself receives power from this card; the lighting finds it's path for common here. Lighting and video both travel back to the X60 card (left upper rear of machine) but on separate cables or paths. The lighting continues to the X8 card or "power back plane" on the lower half of the back of the "crate" and is controlled by the X4 or "Align" card. The video signal (your issue) travels from the X60 to the X68 (below the wiper solvent catch tray) and then via a small black signal cable to the back of the computer. Before we go further I just want to make sure you played with all the contrast setting for lighting in the screen for teaching fiducials? Here are a few quick tips that may resolve your issue quickly: Most likely there is a bad connection, "TURN OFF THE MACHINE" and check to following, not necessarily in this order 1) DB9 connection at the camera 2) Remove camera cover (2 screws) and very carefully press on the connection at the camera wafer board 3) X65 unclip and then press in all connectors, the same at the X60 and X68 cards. All of these cards are signal and power distribution 4) Check the video cable at the back of the computer, there are 2 ports on the vision card, make sure you plug it back into the right port or no video! all check for damage along this cable 5) Open the computer and careful unseat the vision processor card (the one the cable goes to) and reseat it. Turn on the machine and try again. If it seems there is a bad part that is causing the issue it is usually the ribbon cable between the camera and the X65, however it could be a faulty camera or processor card also. The connections are important, check them very well first.

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#74400

MPM Accuflex, Lost Vision | 17 August, 2015

An excellent example of a technical answer from sales verses service! At least I started him in the correct direction.

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#74401

MPM Accuflex, Lost Vision | 17 August, 2015

Thanks for the useful instruction. We did find a loose connection. It was the connector right at the camera/PCB. I believe it was bumped when placing board supports (going forward we'll move the camera to the rear when placing board supports).

I learned a little more about the machine thanks to your trouble-shooting advice. Thanks for your help!

DeanO

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#74403

MPM Accuflex, Lost Vision | 17 August, 2015

DeanO,

Glad you found your issue. Depending on which Speedline FSE installed your Accuflex originally, a copy of the manuals might have been copied on to the desktop or possibly in a Windows explorer folder. The operations manuals, IPB and schematics were all in PDF format for this platform, so a lot of the guys would do this for the end users because the disks were easy to loose. If you can't locate them, look up my contact info and I will send you a copy.

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