DENON Service Bulletin OST-F990 free download

File name Service Bulletin OST-F990.PDF

100 Corporate Drive Mahwah, NJ 07430 Service Bulletin No. : OST-F990 Date: June 14, 2007 _____________________________________________________________ Model: AVR-5805 Subject: Countermeasure to improve unstable operation in the Auto Set-up function. Symptom: Low-frequency noise is coming out from Subwoofer R or Subwoofer B at only below condition. 1) Setup Menu 7-1. Channel Setup: Subwoofer in MAIN ZONE is set to Subwoofer (L/R or F/B). 2) 3-2. EXT.IN Setup: S. Back is set to SBL/SBR or SB (SBL). 3) Select EXT IN mode. Solution: Improved the Firmware so the Set-up function operates properly. MODIFICATION: (Only upon claim) Install the Writer Software to a PC and update your customer's unit upon claim, by means of the Writer Software. (For the update procedures, please refer to the attached procedures.)