Denon ADV-M71 Service Bulletin

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-818
Date:

March 1, 2007

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Model: ADV-M71, D-M71DVS

Subject: Operation noise during the standby mode when playing back

specific MP3 discs.

Symptom: When playing back MP3 or JPEG file that has been recorded by

means of Windows XP, the operation noise (Track Jump) in the standby mode
during the MP3 folder indication is too high. This occurs when recording the data
on a disc by means of Windows XP. The data is always arranged near the Lead­out area, and the number of Track jump operations to the Lead-out area is
increased. As a result, the operation noise has become audible.

Solution:

of Track Jumps is optimized. Please upgrade your customer's unit to "AK20 [Dr
V040407A0]" upon claim.

The F/E (Front-end) firmware has been improved so that the number

1) Preparation of the CD-R for rewriting.

(1) Create the following folder on your PC and store the supplied program files
for rewriting into the newly created folder.
99AK.bin (The FE firmware)
aadummy.xxx (Dummy file)

• The Volume Label of the disc for upgrading shall be "RMC_LDR_DOWN".
Please Note (about recording the Disc):

• When recording the supplied file on the blank CD-R, the format shall be
"ISO9660" and the session shall be "CLOSE".

• When recording the supplied file on the disc, please use the lowest recording
speed that is available on your PC. If the file is recorded at a higher speed, the
rewriting operation may fail due to improperly recorded data on the disc.

______________________________________________________________________________________

The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.

CONFIDENTIALITY NOTICE:

2) The Upgrading Procedure of the F/E Firmware:

(1) Turn ON the Power of the unit, and open the Disc Tray.
(2) Set the disc for upgrading F/E firmware into the Tray and close the Tray.
(3) Several seconds later, the Disc Tray opens automatically. Take out the disc
from the Tray.
(4) Rewriting of the Firmware is executed. The rewriting operation completes
when the Disc Tray automatically closes.
(5) Turn off the Power of the unit once.

Note: Please do not turn off the Power of the unit or do not change the
function of the unit during the rewriting operation. Also, the unit is capable
of receiving control signal of the Remote Control. Therefore, please do not
use the Remote Control Unit during the rewriting operation.

3) Confirmation and Initialization:

(1) Unplug the AC Cord of the unit from the AC Outlet.
(2) While holding the "ON/STANDBY" and "SET/MENU" buttons down
simultaneously, plug the AC Cord in the AC Outlet and release the buttons.
(3) Press "ON/STANDBY" button to turn ON the Power of the unit. Then, select
the "DVD" function by means of Function button.
(4) Push "SET/MENU" button twice so that FL Display indicates "STATUS".
Then, have the Versions of each MICON indicated by means of the
"SURROUND/SELECT" Knob. Confirm that the version of the F/E is indicated as
"Dr V040407A0".
(5) Unplug the AC Cord of the unit from the AC Outlet. While holding the
"PLAY/PAUSE" and "STOP" buttons down simultaneously, plug the AC Cord in
the AC Outlet. Release the buttons when the LED of the "ON/STANDBY" button
lit in orange.
(6) The Power of the unit turns on automatically. Confirm that "INITIALIZE" is
indicated on the FL Display.

4)

If the version of the F/E could not be confirmed, the rewriting has failed. In this
case, please replace the IC on the RL-S871 Mechanism Unit Ass'y with the IC
outlined in the PARTS section.

Parts:

Ref# Description Part Number

U3 IC, A290011UL-70 943 0012 203

Note: After the replacement of the above IC, please be sure to upgrade the F/E
Firmware to "AK20 [Dr V040407A0]".

______________________________________________________________________________________

The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.

CONFIDENTIALITY NOTICE: