Marantz SR5600 - Firmware Version Check

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11. Click CLOSE button to close the application.
12. Disconnect Mains cord.
13. Turn off the internal switch that has been turned on at step 3.
14. Turn on the unit.
Firmware Version Check
To check the versions of the firmware, see "Microprocessor (CPU), DSP Version and FLD Segment Check Mode" in
"SERVICE MODE" section.