DENON Service Bulletin OST-F1144-1 free download

File name Service Bulletin OST-F1144-1.PDF

100 Corporate Drive Mahwah, NJ 07430 Service Bulletin No. : OST-F1144-1 Date: September 19, 2008 _____________________________________________________________ Model: DRA-397, DRA-297, DRA-37 Subject: Countermeasure for improving the malfunction of the Panel Lock Mode. Symptom: On the referenced models, there are control buttons for the Panel and the DEMO Mode to control the reception of the remote control data. However, during the recovery operation if the AC Power Supply is momentarily interrupted (in a particular timing sequence), the operation of the front panel control buttons and the Remote Control becomes locked, and the unit will not accept an input. Typical symptoms are as follows: 1) Immediately after purchasing the unit, it does not accept operations of buttons on the Panel and the Remote Control. 2) The unit does not accept the operation of the Panel buttons after the AC Power Supply is recovered from the interruption. Solution: The firmware has been updated. Please record each program file on a blank CD-R separately, and update the unit when needed. 1) Preparation of the CD-R for rewriting. (a) Create the following folder on your PC and store the supplied program file for rewriting into the folder. (b) Record the created folder on a blank CD-R and create the Disc for rewriting. Note: Upon recording the Disc: