Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 154

(v) Models FDC200VSA, 250VSA
Replace the control PCB according to the following procedure.
(i) Replace the PCB
(ii) Measurement was done on both ends of connector (CNA1) during measurement,
charged the electrolytic capacitor, be sure that the voltage is discharged sufficiently. (Refer to Fig.2)
(iii) Disconnect the connectors from the control PCB.
(iv) Disconnect the white or blue wiring passing through CT1 on the PCB before replacing the PCB.
( v ) Match the setting switches (SW3-5,7, JSW1 ) with the former PCB.
(vi) Tighten up a screw after passing white or blue wiring through CT1 of the changed.
(vii) Please connect the connectors with the same place.
CNW
CNA2
CT1
CNW2
CNI3
CNDRM
CNI1
CNEEV2
CNEEV1
JSW1 SW5
SW4 SW3
Fig.1 Parts arrangement view
after elapsing 3 minutes from power OFF.
CNH
SW7
LED2
LED1
CNIP
CNB
CNTH
153
- -
(Confirm the connectors are not half inserted.)
After elapsing 3 minutes
CNM
from power OFF
CNF
CNS
CNN1
CNN2
CNR
CNA1
CNFAN1
CNFAN2
Fig.2 Enlarged figure of parts location
CNPS
Connectors are not half
inserted
'19 • PAC-T-327
PCA012D050
the voltage(DC) might
(＋)
(－)
Voltage measurement parts
(Pin terminals 1 and 4 of CNA1)