Default DENSO 275800-2182 = remove PCB to access 29F400

[peko]

hi friends

i have ecu DENSO 275800-2182 from vectraC engine Y30DT

https://www.hostingpics.net/viewer.php? ... MG0069.jpg

under PCB i will found 29F400
foto from PCB after open ECU :

https://www.hostingpics.net/viewer.php? ... MG0070.jpg

My question is : in foto i made 2 red cercles, i must remove soldering ? (under i see screww)
or this screw is soldering radiators from pcb ?

how open all ecu without crash pcb , any help appreciate ;)