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DLP LightCrafter 3000 won't boot

Shamit Som
Prodigy 20 points

Recently, our DLP LightCrafter 3000 development kit stopped booting. When power is applied (via the recommended AC adapter), D1 blinks red, and an LED on the lower board blinks red/green. Nothing else happens (the light engine doesn't turn on, etc.). The Cyclone IV FPGA begins to heat up, well beyond how warm it got previously.

Nothing changed between the last usage... the kit was turned off via the power switch, and left plugged in. Upon returning to turn the kit on again, it did not respond to the power button, and the LEDs were flashing as described above. Removing power and reapplying power results in the LEDs blinking as described before, but nothing else happens.

Does the blinking pattern of the LEDs help to troubleshoot? I didn't see anything in the documentation listing what different blinking patterns mean for the LEDs on the two different PCBs.

Thank you!

  • 0
    Prodigy 20 points

    Update: Removing the system board (the one on top) and applying power results in the projector appearing to begin the normal boot-up sequence (the light engine turns on and shows the standard splash screen). As soon as the system board is re-attached, the output stops, and the LEDs blink as described.

    My basic troubleshooting has determined the FPGA to be the cause of failure, however I'm not sure what happened or how it has become faulty.
     

    Since our project has an essence of time involved, is it possible to purchase a system board without purchasing an entire new development kit?

  • 0 in reply to Shamit Som
    TI__Genius 9935 points

    Shamit,

    Your troubleshooting does seem to indicate a high current condition in the FPGA. I, also, am unsure as to what may have caused the problem.

    There is not a method or channel to purchase a system board alone - only a complete LightCrafter. The LightCrafter is an EVM, and not an end equipment device.

  • 0
    TI__Genius 9935 points

    Shamit,

    I responded to your next question after your troubleshooting.

  • 0 in reply to Shamit Som
    Intellectual 750 points

    Shamit,

    The system board we use in our LC3000 is compatible with the unit in the TI Lightcrafter. We don't have it listed on our eStore site but would be happy to help out. Please send me a private message and we can see what is possible.

    Regards,

    Adam

    Keynote Photonics 

  • 0 in reply to Shamit Som
    TI__Intellectual 1565 points

    Hello Shamit,

    The Red LED (D3) on the driver board (bottom board) indicates any failure detected by MSP430. Here's some information on LED blinking notifications:

    If MSP430 detects a failure, the Red LED (D3) blinks at the following rate:

    ON Time OFF Time  Failure
    1 sec 10 secs LED_ENABLE (pin 1 of U11) got triggered because LED_ANODE voltage is greater than 5.8V
    5 sec 500 msec  SYSPWR Voltage falls to less than 2.7V or greater than 5.2 V
    1.5 secs  1 sec  Overheat shutdown, GREEN LED thermistor temperature is greater than 70C

    Here's what I would recommend you trying:

    • Check the ribbon cable from the driver board to LEDs that it is intact and correctly inserted. Follow the steps as mentioned in the screenshots in the following E2E post:

                 http://e2e.ti.com/support/dlp__mems_micro-electro-mechanical_systems/f/850/t/322842.aspx

    • Try connecting the board to PC with USB, open the GUI and hit connect. If it connects try sending some commands like Set LED Current to some value hit Set and then hit Get to see if you read back the set values. This will ensure that the top board is able to do I2C connection.
    • Also FPGA controls the LED Enables so if this command works, then that means FPGA is fine

    • I would also suggest to let the kit disconnected form power and USB for about 30 secs. Then re-apply power and see if it boots up. When power is connected, the MSP430 is active detecting the button press. By disconnecting the cables and waiting a little, the decoupling caps get discharged and the MSP430 looses power, thus resetting the chip.

    Hope this helps else like Adam mentioned, you could be able to get in touch with him and get just the system board from Keynote. 

    Regards

    Manasi