128
Undo the four 4x9 TX20 tapping 
screws (4)
Remove the faulty secondary diodes
Installing the secondary diodes:
Remove the blister packaging from the 
secondary diodes
Place the secondary diodes with the 
applied heat conductive medium onto 
the cooling element 
Fit the secondary diodes with four 4x9 
TX20 tapping screws (4)
[2.1 Nm]
(4)
NOTE! Once the secondary di-
odes have been removed, the 
cooling element must be cleaned - 
making sure to remove all the heat 
transfer medium residue
8
9
NOTE! The PCM material of the 
secondary diodes must not be 
scratched or removed
4
(4)
NOTE! Position the secondary di-
odes so that the oblong hole on 
the secondary diodes corre-
sponds to the groove in the cool-
ing element
3
4