Denon DCD-720AE - Microprocessor and Firmware Management; Microprocessor Replacement and Firmware Upgrade

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WHEN THE MICROPROCESSOR IS REPLACED WITH A NEW ONE

PCB Name Ref. No. Description After replaced Remark
CD IC11  C 
CD IC41  C

Note:IC11 need to work on before writing.
After replacing





PROCEDURE FOR UPGRADING THE VERSION OF THE FIRMWARE
Connect SPK-581 as forrows.
PC
①Connect windows PC with RS-232C cable. (straight cable.)
②Switch to the direction of the arrow.
For USB
(CN82)
(CN83)
For Main
P1050202

 Up side is contacts of FFC.
7P FFC (Straight)

①
 
②
 
 