820-3115 No camera

[aurel476]

Board work very well, but no camera, and automatic brightness on screen/keyboard, manual control work good, connector and cable looks fine

pins of J3502

6: 5V
5: 3,3V
4: 3,3V
3: 0V diode mode : 0,540V cable connected
2: 0V diode mode : 0,540V cable connected
1: GND

L3507 checked

camera with light sensor dead ? I've not another cable and camera board for testing,

USB_CAMERA_P and USB_CAMERA_N

what does it mean P and N ?

 

[dukefawks]

Positive, Negative USB data line.

I say L3507 is bad take it off and measure diode mode on the PCH side (2 and 3)

 

[aurel476]

diode mode side pch 2/3 without L3507 0,600V,

replace L3507 with another same problem

 

[dukefawks]

J3520 pin 2 and 3 should read the same as in L3570, check traces. If that is ok then the cable or camera is dead. Can use a 15" LCD too for testing.