DLPLCR4500EVM: USB connection issue

Wai Kit Khoo

Part Number: DLPLCR4500EVM
Other Parts Discussed in Thread: DLP4500

Hi,

I encountered a weird USB connection issue as follow:

One of the three PRO4500 connected to the computer is shown as unknown device in the Device Manager. I unplugged all the USB connection of the projectors that are working fine. I used DLP LightCrafter 4500 Control Software and it failed to connect to the projector being shown as unknown device. I re-plug in the USB connector of the problem projector to the same USB port and the status in the Device Manager changed to USB Composite Device. I used DLP LightCrafter 4500 Control Software and it still failed to connect to the projector. I unplug the USB connection and changed to a different USB port and everything works fine. Again, I unplug the USB connection and changed back to the original USB port and everything works fine.

There are a few questions I hope that you can enlighten me:

1. Under what condition, the PRO4500 will turn into unknown device(I am sure it is working fine previously)?

2. Why after re-plug in to the same USB port and the status already changed to USB Composite Device, but DLP LightCrafter 4500 Control Software still fail to connect to the projector?

3. Why changing USB port once make everything works again?

Please let me know if you need more information.

over 8 years ago

0 Paul Goedeke over 8 years ago

TI__Mastermind 30600 points

Hi Wai Kit Khoo,

Thanks for your question and welcome to the DLP Forums. I'm sorry you're having trouble with your DLP4500 system. Which operating system are you using?

This is an issue we don't see on our Lightcrafter 4500 but we have heard that some folks have been having trouble on Win10 machines. If you have a Win7 machine to try this on, that would give me a good idea of whether or no the issue is the operating system or something else.

Best,
Paul

0 Wai Kit Khoo over 8 years ago in reply to Paul Goedeke

Prodigy 125 points

Hi Paul Goedeke,

FYI, my computer is running on Windows 7 Professional Service Pack 1(64-bit operating system).

0 Paul Goedeke over 8 years ago in reply to Wai Kit Khoo

TI__Mastermind 30600 points

Thanks for that. One thing I noticed is that you're running the older version of the GUI. Can you please uninstall that and use the latest version? Once you've done that, let me know if your issue persists. You can find it here:

www.ti.com/dlplcr4500gui-V3-1-0

Thanks,
Paul

0 Wai Kit Khoo over 8 years ago in reply to Paul Goedeke

Prodigy 125 points

FYI, the firmware version inside the projector is v2.0.0. Is it ok to use v3.1.0 GUI to connect the projector with old firmware?

0 Paul Goedeke over 8 years ago in reply to Wai Kit Khoo

TI__Mastermind 30600 points

Hi Wai Kit Khoo,

It should work, but for best results update the firmware to the latest version as well.

Best,

Paul

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DLPLCR4500EVM: USB connection issue