7 Replacing the DST Assembly
5. Tighten the three connecting screws of the DST
printed circuit board (TX20, torque: 3.5 Nm
(31.0 in-lb)). When doing so, follow the sequence
shown.
6. Tighten all fastening screws of the power modules
(TX20, tightening torque: 2.0 Nm (17.7 in-lb)).
When doing so, follow the sequence shown.
24
STP50-DC-EMV-DST-RM-xx-12
SMA Solar Technology AG
2
1
3
6
5
1
2
3
10
9
8
7
11
Replacement Manual
4
12