Marantz NR1604 Service Manual page 57

[All model commonness]
1.3. Turn on the AV receiver
Operate the following. Turn on the AV receiver.
(1) Connect the power cable to the AC outlet while simultaneously pushing the "M-DAX" and "SOUND MODE" button of
the front panel.
(2) Confirm the power indicator is green and "WRITTING" is displayed in the front panel.
1.4. Run the DFW
Run the "DFW_0013_NR1604_(Rev.X.X.X).exe" on desktop of PC.
1.5. Communication check
(1) Select the serial port number of RS-232C in PC.
(2) Click the "Check Comm." button.
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