Mitsubishi Heavy Industries FDTC50ZHXV Technical Manual page 267

4) Model FDC200VS, 240VS
a) Replace the PCB after elapsing 3 minutes from power OFF.
(Be sure to measure the voltage (DC) of two places (1.Resistor on PCB at the front of controller 2.Both
capacitor terminals located in back of controller), and check that the voltage is discharged sufficiently. (Refer
to Fig.2))
b) Disconnect the connectors from the control PCB.
c) Disconnect the blue wiring passing through CT1 on the PCB before replacing the PCB.
d) Match the setting switches (SW3-5, JSW) with the former PCB.
e) Tighten up a screw after passing blue wiring through CT1 of the changed.
f) Connect the connectors to the control PCB. (Confirm the connectors are not half inserted)
CNW
CNA2
CT1
CNW2
CNI1
SW4
SW3
CNEEV2
CNEEV1
Parts No.
Fig.1 Parts arrangement view
connectors are not half inserted
CNPS
CNTH
CNU
CNIP
CNB
CNH
CNM
CNS
CNR
CNA1
CNFAN1
CNFAN2
JSW
SW5
Front view
Fig.2 Position of capacitor
258
– –
after elapsing 3
minutes fro m
power OFF
Voltage measurement
parts
V oltage measurement parts
Side view