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DLP3010EVM-LC: Exact procedure to remove the light engine

Joselito Go
Intellectual 2980 points
Part Number: DLP3010EVM-LC
Other Parts Discussed in Thread: DLP3010LC

Hi Experts,

Good day.

Our customer wants to do an experiment using DMD so that it should load an image(we've updated the splash image to the image that we want to project). The input light to the DMD shouldn't be the LED in the DLP, but a laser we have. So we want to remove that optical engine and load the image to DMD and reflect/project that image using our laser.

This is the motive to remove that optical engine. So can you please make it clear what to do step by step and elaborate on the procedure including what are changes we've to do in the hardware as well(removal of parts and fixing DMD to reflect the laser)?

Keep safe.

Regards,

Josel

  • 0
    TI__Expert 5310 points

    Hello Josel,

    We will have to look at how the DMD is mounted and come back to you.

    Regards,

    John

  • 0 in reply to John McKnight
    TI__Mastermind 22840 points

    Hello Josel,

    We do not have a documented procedure for removing DMD or optical engine from the EVM. However, this method should be straight forward with a Philip screwdriver and a blade to cut sealant.

    Few suggestions -

    • Please review the mounting concept for DLPC3010LC DMD. You have to secure DMD using mounting hardware in your setup.  Please note that the electrical connection between DLP3010LC DMDs and flex cable is secured mechanically using mounting hardware.   It is very important that the connection is secured; any loose connection and signal noise can cause permanent damage to DMD.

    DLP3010LC data sheet, product information and support | TI.com

    • The DLP controller firmware checks for the DMD, PMIC and LED connectivity at boot time.  If any of these is not connected, it will shut down. Please leave the LED cable in the EVM connected.
    • Please handle the flex cable very carefully, there are very fragile.  TI does not sell spare part for the EVM. If flex cable is damaged, then you have to use the flex cable from another DLP3010LC EVM.
    • You can reuse the DMD mounting hardware form the EVM optical engine in set up. It is good idea to take a picture as you disassemble the engine so that it easy to reassemble the DMD with mounting hardware in your set up.  You also need to machine the interface plate (as described in the mounting concept). Please make adjustment for locations of screw holes to match with the hardware from optical engine.

    Disassembly steps:

    1. There is a flex cable connecting to the optical engine on left side of the engine. The DMD is mounted behind the black heat sink. 

    2. Carefully separate the other end of the flex cable from Board.

    2. There is black sealant between this heat sink and optical engine body.  Carefully cut this sealant with a sharp knife. 

    3. Unscrew three small screws holding the heat sink and try to separate the heatsink using same knife or thin flat head. You may to remove any remaining sealant too.

    4. Gently pull the PCB. It is connected to flex. This will free up the flex cable.

    5. Unscrew the two new newly exposed screws, Now you can remove the plat and DMD from the engine.

    6. Machine a custom interface plate to match the mounting hardware from optical engine.

    Regards,

    Vivek

  • 0 in reply to Vivek Thakur
    TI__Intellectual 2980 points

    Hi Vivek,

    Good day.

    Where should we connect(means, connection to the PCB) the DMD after removing the light engine so that we can load the splash images and project those images using an external laser source? I didn't get that part clear.

    Keep safe.


    Regards,

    Josel

  • 0 in reply to Joselito Go
    TI__Mastermind 22840 points

    Hello Josel,

    I assume that you will be using the Electronic /board from the EVM. You will connect the flex cable back to same socket where it was connected before. You want to remove the flex cable from the board while dis-assembling DMD to minimize chances of damage to flex cable.

    regards,

    Vivek