Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 294

Sub PCB (PCB2) on the lower layer
6. Loosen 4 screws and remove
Sub PCB.
Layout of Sub PCB.
Screws
S-1 (WH)
CNEEV2
CNEEV1
SO (WH)
CNMAIN
293
- -
〔Part side〕
C-1 (RD) CND CNC CNB
RO (BK)
Grounding cables
〔Pattern side〕
'17 • SCM-T-225
Screws
CNA CN20V
Black cable
White cable
to N-terminal