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4.3 Master Board Replacement
Remove wiring terminals from the master board, mark the ports (to ensure correct wiring
of the new board), unfasten the four screws, take off the PCB to be replaced, install the
new board, fasten the screws, and then reconnect the wiring terminals.
4.4 The 24V Power Supply Replacement
Turn off the air switch and unscrew the four fixed screw,take off electrical mounting plate.
Use screwdriver to unplug the wire on the power supply,unscrew the fixed screw from the
power supply,then remove it and replace the new one.
