Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 293

Sub PCB (PCB2) on the lower layer
1.After removing the Main PCB,
disconnect all connectors on
Sub PCB.
①Disconnect the connector
of CNEEV1.
（for EEVA & EEVB)
②Disconnect the connector
of CNEEV2.
（for EEVC & EEVD)
③Disconnect the connector
of CNMAIN.
(Going to Main PCB)
④Disconnect the connector
of CN20V.
(Going to Main PCB)
⑤Disconnect the connectors
of CNA, CNB, CNC and
CND.
2.Loosen screws and disconnect
the grounding cables.
3.Disconnect the fasten
connector of the black cable.
Note : Be sure to do above
work after elapsing
3 minutes from power OFF.
4.Loosen a screw and pull up
the right side of the upper TB
to unlatch from the left side
square hole.
5. Loosen the screw of
N-terminal and disconnect
the white cable.
CNEEV2 ②
CNEEV1 ①
CNMAIN ③
Disconnect the black cable
Grounding cable (G-1)
292
-
CND ⑤ CNC ⑤ CNB ⑤
Grounding cable (G-1)
Grounding cable (G-2)
〔Front view〕
Screw
Square hole
-
'17 • SCM-T-225
CNA ⑤ CN20V ④
Grounding cable (G-2)
〔Side view〕
Disconnect the white cable