There is no jumper on the PCB related to the display. As I said, just replace the display, that's all there is, as long as the phone is working of course.
Have a look at the help files in BMS, you will find a lot of information and facts regarding power consumption.
A BP250 with a CPU, ELU-A and an IPU board is no problem for the power supply unit.
The strange acronyms like RYS/TYT/ROFNB/BKBN is part of Ericsson's ABC-coding system.
You need to have Ericsson (internal) document in order to decode these acronyms.
From my memory: RYS=firmware often in a chip, ROF=Printed circuit board.
The manual is included in the web based programming tool called BusinessPhone Management Suit, in short BMS.
You need this tool in order to do your LCR programming. Ask an Aastra dealer, they might help you with a copy of this program.
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