Part Number: DLPDLCR3010EVM
Hello.
I've connected the EVA kit to my PC (running Win8.1 x64), and installed the necessary software and drivers (DLP LightCrafter Display v5.0 Setup.exe). The installation went fine and I don't see any issues in device manager, etc. The EVA kit is powered by sufficiently rated lab power source (can well operate in 3+A / 5V configuration).
When I flip the SW1 switch, I can see the projector briefly flashing red light and then nothing happens. The lens stay dim (i.e. no image is projected whatsoever) and I don't see any failure indications on the board:
- D5 / D7 are turning ON (green)
- D6 goes OFF, briefly flashes green and then stays OFF
- D15 and D16 are both always ON (green)
Without the HDMI cable connected, I can see the consumed current (at the power source) of about 300mA. If I connect the HMDI cable, I can see another display being detected by Windows and current consumption jumps to ca. 370mA.
When I try to query info about the device via the LightCrafter DIsplay S/W, all requests basically fail with the following log output:
Read Cmd:SystemSoftwareVersion, addr:37, subAddr:d2 SendRead(FAILED(1))
And the device log says:
Error: Read failed - I2C device NAK - will retry Error: Read failed - I2C device NAK - will retry Error: Read failed - I2C device NAK - will retry Error: Read failed - I2C device NAK - will retry Error: Read failed - I2C device NAK Addr: 36, Bytes: 4
Other commands have similar effect, like:
Read Cmd:DmdDeviceId, addr:37, subAddr:d5 SendRead(FAILED(1))
And the device log says:
Error: Write failed - Timed out while processing a user request - will retry Error: Write failed - I2C device NAK - will retry Error: Write failed - I2C device NAK - will retry Error: Write failed - I2C device NAK - will retry Error: Write failed - I2C device NAK Addr: 36, SubAddr: 0xd5, Bytes: 2 0000: d5 04
BTW, I can see D8, D10 and D14 lighting up in blue, but I never see D12 lighting up.
What could be the reason for this behavior? What else can be done to troubleshoot the issue?
P.S.: our engineer has checked the value of resistors mentioned in some other Q&As, and we have R47 = 70K, R48 = 64K, while according to published schematics, R47 should be 380K and R48 should be 78K. Is it normal (e.g. another PCB revision, etc.), or is it some kind of an issue that might be related to our problem?
