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The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 1 / 7

The Operating Manual for
DENON AV Receiver/Amplifier firmware update.

"DENON Flash Rom Writer Compact Version."

Model Name: AVR-3806
Version: FWCV_AVR3806_V0027
Date: 2006-09-13
The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 2 / 7

Index

1. Preparations before starting the operation: .......................................... 3
1.1 Preparation for the Personal Computer: ............................................ 3
1.2 Preparations for the cables. ...................................................... 3
1.3 Connection diagram. ............................................................... 4
1.4 Install the DENON Flash ROM Writer Compact version. ............................... 4
2. Firmware update procedure. ........................................................... 5
2.1 Notice: ........................................................................... 5
2.2 Set the AV Receiver/Amplifier into the firmware update mode. ...................... 5
2.3 Run the DENON Flash ROM Writer Compact version. ................................... 5
2.4 Communication check. .............................................................. 5
2.5 Start the firmware update. ........................................................ 6
2.6 Complete the firmware update. ..................................................... 6
3. Specific update mode. ................................................................ 7
4. Confirming the firmware's number after upgraded ..................................... 7
The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 3 / 7

1. Preparations before starting the operation:
1.1 Preparation for the Personal Computer:
Minimum hardware and software requirements:
Type PC/AT compatible
CPU Intel Pentium/Celeron300MHz or faster
RAM 128MB or more
Free hard disc space 25MB or more
OS Windows XP Home Edition / Professional SP1 or more
Display resolution Super VGA (800x600) or more.
Port. Serial COM port (D-Sub 9pin)
Communication speed RS-232C:115,200bps

1.2 Preparations for the cables.
Serial Straight Cable for RS-232C consisting of D-Sub 9P(female) and D-Sub 9P(female) cable.
D-Sub 9P(male) and D-Sub 9P(male) Gender Changer.

D-Sub 9P(female) and D-Sub 9P(female) Gender Changer
cable D-Sub 9P(male) and D-Sub 9P(male)

Note: There is the RS-232C(Male and Female) 9P cable like the following picture on the market.
Then you don't need to use Gender Changer.
However, Please confirm a nut part. If you can't remove the nut part, then you can't use
this cable.
Because, AV Receiver/Amplifier RS-232C port also has the nut. You can not insert cable as
physical conflict.
The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 4 / 7

1.3 Connection diagram.
Connect the RS-232C cable between RS-232C port of PC and RS-232C port on rear panel of
AV Receiver/Amplifier.

RS-232C
AV Receiver
Straight cable.
PC /Amplifier.

Rear Panel

1.4 Install the DENON Flash ROM Writer Compact version.
(1) Execute the"FWCV_AVR3806_V0027_SETUP.exe".
(2) Install utility according to message.
(3) After installed, you can see the `DENON FWCV_AVR3806_V0027'icon on desktop.

DENON
FWCV_AVR38
06_V0027
The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 5 / 7
2. Firmware update procedure.
2.1 Notice:
Please keep the following notice for firmware update.
a) Keep the PC environment refer to 1.1.
b) Avoid the communication cable from the electrical noise source.
(e.g. telephone cable, AC line, a fluorescent light)
c) Don't remove cable during update.
d) Don't turn off the power during update.
e) Don't run other PC application during update.
f) Stop the resident program on PC.
g) Stop the screen saver ability on PC.
h) Stop the power save ability on PC.
i) In case of laptop PC, Use the AC adaptor.

2.2 Set the AV Receiver/Amplifier into the firmware update mode.
Operate the following. The AV Receiver/ Amplifier goes to the firmware update mode.
1) Turn on the power switch of the AV Receiver/Amplifier.
2) Confirm the power indicator is green. If the power indicator is red, Make the power indicator
green pushing the ON/STANDBY button.

2.3 Run the DENON Flash ROM Writer Compact version.
Run the `DENON FWCV_AVR3806_V0027' on desktop of PC.

DENON
FWCV_AVR38
06_V0027

2.4 Communication check.
1) Select the serial port number of PC.
2) Click the "Check communication" button.

(1)

(2)
The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 6 / 7
3) If connection is good, then you can see the"Communication check OK."message.

4) Please wait 1 min at least. If connection is not good, then you can see the"Communication
check NG!" message.

Please confirm the following.
a) Check the connection (refer to 1.3).
b) Check the firmware update mode status (refer to 2.2).
c) Check the port number of PC (refer to 2.4(2)).

2.5 Start the firmware update.
Click the"Update" button.

2.6 Complete the firmware update.
1) When Update utility completed the firmware update, you can see the"Update completed."
message.

2) If you can't complete the firmware update, please retry the firmware update from 2.2.
However, If you failed update during Main CPU update, then you need to use a specific update
procedure (refer to 3).
The Operating Manual for DENON AV Receiver/Amplifier firmware update. Page 7 / 7

3. Specific update mode.
If you failed update during Main CPU update, then you need to use this specific update procedure.
1) The AV Receiver/Amplifier is connected with PC with the RS-232C cable. Refer to 1.3.
2) Push the `SURROUND PARAMETER'+`SURROUND BACK'button simultaneously.
And turn on the power switch of the AV Receiver/Amplifier.
3) Power indicator indicates red color. This is specific update mode.
4) Please execute the firmware update. Refer to 2.3.

4. Confirming the firmware's number after upgraded

After completion of the updating operation, the new version number can be confirmed by starting
up the AVR-3806 according to the following procedure.
With the following operation, the AVR-3806 can be set to the Flash-ROM Version-Number
Confirmation Mode.
Turn the power of the AVR-3806 on, while holding both "STATUS" button and
"ROOM EQ" button on the front panel simultaneously.

Turn
STATUS ROOM EQ
Power ON

Every time the "STATUS" Button is pressed, version numbers of the MAIN, SUB,
etc. are indicated on the front panel section in the following order.

Depression Button Name Remarks
1 STATUS MODEL AVR
2 STATUS MAIN 00.76
3 STATUS SUB 00.56
4 STATUS DSP 00.45