Typical turn on sequence for Denon Receivers.

When you plug it in and turn on main power switch there should be solid red power light, the receiver is in standby mode.
After you press power button you hear a relay click then Display turns on, power light flashing green for few seconds then turns in solid green light. In few seconds you hear another clicks (speaker relays) and get a sound.

Non typical (error) turn on sequences for Denon receivers:

1. Standby mode - solid red power light. When you press power button, you hear first relay click, display is on, power light flashes green few times then switches to constantly flashing red. No second relay click. No display messages.
In most cases there is a problem with power supply section or power amplifier section (one of the channels is blown)

2. Solid red power light. You press power button, hear first relay click, no display messages, power light flashes green few times then switches to solid green. No display, no sound.
Usually the problem caused by missing voltages from main power transformer. In some cases the unit has bad main power transformer. Some times it could be just bad internal fuse. Most likely the power amplifier has bad channel which caused main fuse to blow.

3. Solid red power light on. No responce to power button or remote control.
Most likely the receiver has a problem with main macroprocessor.

4. No standby power light, no display, dead unit.
Check standby power supply. Some models has an electronics fuse in standby section after a bridge rectifier. If standby voltage is ok, main cpu is probably bad.

How to reset a Denon Receiver.

Some problems could be fixed by resseting main macroprocessor. The receiver will be reseted to the factory default setting. All customers settings will be lost.

Denon AVR-486 AVR-686 AVR-786 AVR-886 AVR-1404 AVR-484 AVR-1505 AVR-485 AVR-1506 AVR-1602 AVR-682 AVR-1603 AVR-683 AVR-1604 AVR-684 AVR-1705 AVR-685 AVR-1706 AVR-1801 AVR-1802 AVR-882 Initialization Procedure

1 Switch off the unit using the main unit's POWER switch.
2 Keep both SPEAKER A and B buttons depressed and turn on the unit by pressing the main unit's POWER switch.
3 Check that the entire display is flashing at 1- second intervals and release the buttons. The microprocessor will be initialized.

AVR-1803 AVR-883 Initialization Procedure

1 Switch off the unit and unplug power cord.
2 Keep both ZONE2 and SURROUND BACK buttons depressed and plug in power cord.
3 Check that the entire display is flashing at 1- second intervals and release the buttons. The microprocessor will be initialized.

AVR-1804 AVR-884 Initialization Procedure

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following SPEAKER A button and SPEAKER B button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized

AVR-1905 AVR-785 Initialization Procedure

1 Switch off the unit using the main unit's power switch.
2 Hold the following SPEAKER A button and B button, and turn the main unit's power switch.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialize

AVR-1906 Initialization Procedure

1 Switch off the unit using the main unit's power switch.
2 Hold the following SPEAKER A button and B button, and turn the main unit's power switch.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialize

AVR-2105 AVR-2106 AVR-885 Initialization Procedure

1 Switch off the unit using the main unit's power switch.
2 Hold the following SPEAKER A button and B button, and turn the main unit's power switch.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialize

AVR-2801 AVR-2802 AVR-981 AVR-982 Initialization Procedure

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following A button and B button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-2803 AVR-983 Initialization Procedure

Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following FRONT SPEAKER button and ZONE 2 button, and plug the AC cord into the wall outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-2805 AVR-985 Initialization Procedure

1 Switch off the unit using the main unit's power operation switch.
2 Hold the following INPUT MODE button and ANALOG button, and turn the main unit's power operation switch on.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-2807 Initialization Procedure

1 Switch of the unit using POWER
2 Hold PURE DIRECT and NIGHT and press POWER
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-3801 AVR-3802 Initialization Procedure

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following AUTO button and PCM button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-3803 AVR-1083 Initialization Procedure

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following PURE DIRECT button and ZONE2 button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-3805 Initialization Procedure

1 Switch off the unit using the main unit's power operation switch.
2 Hold the following PURE DIRECT button and DIRECT button, and turn the main unit's power operation switch on.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-3806 Initialization Procedure

1 Switch of the unit using POWER
2 Hold PURE DIRECT and NIGHT and press POWER
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-4306 Initialization Procedure

1 Switch of the unit using POWER
2 Hold ROOM EQ and NIGHT and press POWER
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-4802 Initialization Procedure

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following DIRECT button and STEREO button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-4806 Initialization Procedure

1 Switch off the unit using the main unit's POWER switch.
2 Hold the following PURE DIRECT button and DIRECT/STEREO button, and turn the main unit's POWER switch on.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons. The microprocessor will be initialized.

AVR-5803 Initialization Procedure

1 Switch off the unit and remove the AC cord from the wall outlet.
2 Hold the following DIRECT button and STEREO button, and plug the AC cord into the outlet.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

AVR-5805 Initialization Procedure

1 Switch off the unit using the Main unit's power operation switch.
2 Hold the following STANDARD button and HOME THX CINEMA button, and turn the Main unit's power operation switch on.
3 Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.