Digital core power voltage set to 0.9375V Unsure if the commands are even being received by the 4920 device or possibly there is a different RX pin on the device yet to be discovered or some other jumper that needs to be set first. I am waiting on another device to compare output and response. Also below is output from the serial port for this device. So adapter works fine.īelow are images of the found serial header. Serial console works and was able to break into CFE. So far same with previous user the 4920 will not respond to a break command CTRL+C or CTRL-Break to get into CFE.įor testing I switched the USB TTL serial adapter to an old Cisco VEN-401 5Ghz WAP. Then the device crashes looking for some offset at 0x3e004. Connect receive pin to TX on device after power on. Both Ethernet port lights turn on and the front lights also stay on with no activity. If it is device locks up and will not boot. Serial port receive can not be connected during power on. GND 0V Continuity to multiple points on various grounds. Pin out from pin one square hole with dot. The header I used is J13 next to the smaller heat-sink on the top of the board.
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