I have a intel miniPC NUC7i3DNHE, and I want to connect a LG Flat panel display through edp interface(LP156WF6-SPA1，which Is in the official recommendation list, http://compatibleproducts.intel.com/ProductDetails?EPMID=122498 http://compatibleproducts.intel.com/ProductDetails?EPMID=122498 ) .
Question 1: I connect them with the following line order：
NUC eDP line order LG LP156WF6-SPA1 line order
connectjion line order
but with this order, the flat panel display is no response when i power on the NUC.
Then I find the eDP_pin32(BL_ENABLE) and eDP_pin33(BL_PWM_DIM) are in the low level(0V), so I connect LCD_pin22/23 with eDP_pin25/26(high level 3.3V), and power on the NUC again. At this time, backlight of the flat panel display is work, but the display is still no signal.
so I hope someone tells me where the problem is？
Question 2: why my NUC bios items are less than the NUC TPS?
Because I cann't let the flat panel display work properly, I think maybe something wrong with the bios setting. But only 2 items about flat panel display in the bios-->Devices-->Video.(right part of the pic)
Thank you for posting.
Are you aware of the specification change for this Intel® NUC? See below:
Page iii: https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC7i3DN_TechProdSpec.pd... https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC7i3DN_TechProdSpec.pd...
Can you please help us to confirm some information regarding your system? This will help us to answer all your questions:
- Provide the SA number of your Intel® NUC via private message. I will send you a message soon.
- Provide your https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows- Download Intel® System Support Utility for Windows* report.
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Intel Customer Support Technician
Under Contract to Intel Corporation
The pin layout described in the Technical Product Specification where it references to "Pin 1 designator" on the board is incorrect however the pinout information is correct and the connector is in the right only the silkscreen is wrong.
See image attached.
I hope this helps,
Thank you very much, I already know this wrong message.
After recent research, I have confirmed the connection method: pins of video signal, power supply, grounding direct connection
But the usage of three pins (HPD, BL_PWM, and BL_EN) is not very clear, and the direct connection method did not allow the flat panel display to work properly..
I connected BL_PWM and BL_EN to LCD_VCC (3.3V), the backlight worked.
Pecelec tells me that HPD direct connection may not be recognized, but need to short-circuit HPD and LCD_VCC (3.3V) on the motherboard side, so that the motherboard thinks it receives the HPD signal from the monitor. I am going to wait for the new machine to arrive and try it.
I have solved this problem.
The line order is sample, just one by one: HPD--->HPD, PWM--->PWM, Lane1_N--->Lane1_N, etc.
But the shielding of signal lines(LaneX_NP, AUX_NP, HPD, PWM) is very importent. I chose coaxial shielded cable as the signal lines, and problem's solved.