DLPU103B october   2020  – may 2023 DLP230NP

 

  1.   1
  2.   DLP LightCrafter Display 230NP EVM
  3.   Trademarks
  4. 1  DLP LightCrafter Display 230NP EVM Overview
  5. 2 Safety Instructions
  6. 3 Applicable Documents
  7. 4 What is in the DLP LightCrafter Display 230NP EVM?
  8. 5 Light Engine
  9. 6 Quick-Start Procedure
  10. 7 Connectors on Formatter Board
  11. 8 EVM Setup
  12. 9 Raspberry Pi Guide
    1. 9.1 Raspberry Pi General Configuration
    2. 9.2 Video Timing Configuration
    3. 9.3 Python Support Software
    4. 9.4 Operating Modes
    5. 9.5 Example Applications
      1. 9.5.1 Initialize Communication Between Raspberry Pi and EVM
      2. 9.5.2 Play Video Content from Raspberry Pi
      3. 9.5.3 Execute Sample Scripts Using Raspberry Pi
      4. 9.5.4 Rewrite Controller or FPGA Flash Device Using Raspberry Pi
  13. 10Troubleshooting
  14. 11Support Resources
  15. 12Revision History

10 Troubleshooting

In case any issues are being encountered while using the DLP LightCrafter Display 230NP EVM, the following frequently ask questions may help resolving the issue.

  • D_PROJ_ON LED is not coming ON after applying power to the DLP LightCrafter Display 230NP EVM.
    Check the FAN connection on J4 and ensure all wires have good contact to the formatter board. In case the FAN is not running or a bad connection of the FAN to the formatter board is present the PROJ_ON signal will not be driving HIGH.
  • System shuts down immediately upon enabling LEDs.
    The system voltage input has to be exactly 5 V to ensure enough margin during power up to not trigger the voltage monitor, which would cause a shutdown of the system. Check your voltage level provided by the supply and ensure it is between 5 V–5.3 V.
  • Video output in external video mode has jitter or is otherwise noisy.
    Check the GPIO drive strength and video timing configuration settings on the Raspberry Pi. If the GPIO drive strength is too low for a given video timing, or the pixel clock implemented is too high, then the video output will not look good when sent by the Raspberry Pi.
  • Flash device has been accidentally rewritten with an incorrect firmware image.
    The EVM will not boot in this case, but may be recovered. execute the "flash_write_controller.py" and "flash_write_fpga.py" scripts with the default firmware images to reprogram the system with factory default settings.
  • System is unresponsive after switching to splash screen. Many commands, including "Splash Screen Select" and "Look Select" commands, cause a memory access to occur between the controller (DLPC3436) and flash memory. In the case that I2C commands are sent when this memory access has not completed, I2C bus hangup may occur. When executing any script which performs flash device memory access, it is necessary to enable I2C command delays of with a minimum duration of 0.6 seconds to ensure that no write or readback commands fail during code execution.
  • Raspberry PI video output is black after being idle. The Raspberry Pi has a black screensaver enabled by default. If this is the case in the particular version being used with the system, it is recommended to disable this screensaver in the Raspberry Pi user settings if desired.