Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 150

(iv) Models FDC100VSA, 125VSA, 140VSA
1) Disassembly
a) After the breaker is shut down, remove the service panel, top panel and rear panel. (Refer to Fig.1).
b) Don't touch the main PCB until three minutes have passed after the breaker is shut doun.
(After having shut down the breaker, some capacitor is held by high voltage. It is very dangerous to touch
the main PCB in this condition.)
In the situation that hamesses are connected to main PCB, be sure to measure voltage (DC) on main PCB,
and check that the voltage is discharged sufficientlv (DC voltage 30 V or less). (Refer to Fig.2)
c) Disconnect the connectors, faston terminals and round terminals from the main PCB as shown in Fig.2.
And then remove the fixing screws (3 places) as shown in Fig.3.
After removing the main PCB, wipe off the heat conduction sheet neatly from the copper plate.
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'19 • PAC-T-327
PCA012D084
A