Denon AVR-2803 - Service Manual

Other manuals for Denon AVR-2803

Operating Instructions129 pages

Brochure & Specs2 pages

Control Protocol13 pages

Code List5 pages

Bedienungsanleitung89 pages

Questions and Answers

R
Rachael WebbAug 15, 2025
What to do if my Denon Stereo Receiver display is lit but no sound is produced?
- S
  Shelia PatelAug 16, 2025
  If the display is lit but no sound comes from your Denon Stereo Receiver, consider these potential causes: * Ensure speaker cords are securely connected. * Check the audio function button to ensure it's in the correct position. * Verify the volume isn't set to the minimum; increase it to a suitable level. * Confirm that MUTING is switched off. * If using digital signals, ensure they are being input correctly or that you've selected the appropriate input jacks.
P
paula52Aug 18, 2025
Why is there no display and sound from my Denon Stereo Receiver when the power switch is on?
- A
  Alexis FranklinAug 18, 2025
  If your Denon Stereo Receiver shows no display and produces no sound when the power switch is on: * Check that the power cord is securely plugged in. * After turning the POWER switch on, try turning the power on with the remote control.
L
Lorraine MarshallAug 21, 2025
Why does my Denon Stereo Receiver system setup screen not appear?
- N
  Nancy PattersonAug 21, 2025
  If the system setup screen does not appear on your Denon Stereo Receiver, it may be due to: * Headphones being used. Unplug them from the headphone jack. * Mute mode being activated. Cancel the mute mode. * Monitor TV not connected. Connect a monitor TV.
J
josephmurrayAug 25, 2025
Why is my Denon Stereo Receiver remote not working?
- R
  Ryan FordAug 25, 2025
  If the remote isn't operating your Denon Stereo Receiver, the following could be the reason: * The batteries may be dead. Try replacing them with new ones. * You might be too far from the unit. Move closer. * There could be an obstacle blocking the signal. Remove it. * You may be pressing the wrong button. Ensure you're pressing the correct one. * The batteries might be inserted incorrectly. Check the polarity and re-insert them properly.
B
Bradley ShawAug 27, 2025
What to do if the Denon Stereo Receiver display is not lit and the power indicator is flashing rapidly?
- E
  Erin GarzaAug 28, 2025
  If the display of your Denon Stereo Receiver isn't lit and the power indicator flashes rapidly, it could be due to: * Short-circuited speaker terminals. Turn off the power, properly connect the speakers, and then turn the power back on. * Blocked ventilation holes. Turn off the power, ventilate the unit well to cool it down, and then turn it back on. * Continuous high power operation and/or inadequate ventilation. Turn off the power, ventilate it well, and then turn it back on once cooled.
E
Eric RobinsonAug 30, 2025
Why is sound only coming from one channel on my Denon Stereo Receiver?
- B
  bbakerAug 30, 2025
  If sound is only coming from one channel of your Denon Stereo Receiver, it may be due to: * Incomplete connection of speaker cords. Ensure they are securely connected. * Incomplete connection of input/output cords. Ensure they are securely connected.
M
michaelstoutSep 2, 2025
Why are the instrument positions reversed during stereo playback on my Denon Stereo Receiver?
- R
  rsmithSep 2, 2025
  If the instrument positions are reversed during stereo playback on your Denon Stereo Receiver, it's likely due to reversed connections of the left and right speakers or input/output cords. Check these connections to ensure they are correct.
J
jenniferriveraSep 5, 2025
Why is there a humming noise when playing records on my Denon Stereo Receiver?
- S
  shicksSep 5, 2025
  A humming noise when playing records on your Denon Stereo Receiver can be caused by: * The turntable's ground wire not being properly connected. Ensure it's securely connected. * An incomplete PHONO jack connection. Ensure it's securely connected. * Nearby TV or radio transmission antenna.
V
victorwrightSep 8, 2025
Why is there howling noise produced when the volume is high on my Denon Stereo Receiver?
- E
  Eduardo MclaughlinSep 8, 2025
  Howling noise at high volume on your Denon Stereo Receiver may occur because: * The turntable and speaker systems are too close together. Separate them as much as possible. * The floor is unstable and vibrates easily. Use cushions to absorb speaker vibrations transmitted through the floor. If the turntable lacks insulators, use audio insulators.
E
Elizabeth SmithSep 12, 2025
How to turn on the on screen display on Denon Stereo Receiver?
- J
  Jose KeithSep 12, 2025
  If the on-screen display is not showing on your Denon Stereo Receiver, navigate to the system setup menu and ensure that the “on screen display” setting is turned on.

Summary

Safety Precautions

Leakage Current Check

Check for customer safety before returning the unit, ensuring proper electrical insulation.

Disassembly Procedures

Power;Control Unit Check

Method for checking the power and control unit while the unit is powered on.

Servicing Cautions and Initialization

AV Receiver Initialization

Procedure to initialize the AV SURROUND RECEIVER, typically after component replacement.

Adjustment Procedures

Audio Section Idling Current Adjustment

Procedure for adjusting the idling current in the audio section.

System Diagrams

Wiring Diagram

Overall wiring diagram showing connections between different units and components.

Schematic Diagrams (Parts 1-12)

Detailed schematic diagrams for various receiver units, presented in 12 parts.

Schematic Diagrams (Japan Models)

Detailed schematic diagrams for units specific to Japan models.

Test Mode Operations

μcom;DSP Error Display Mode

Procedure to check for and display microcomputer or DSP errors using a specific test mode.

Printed Wiring Board Layouts

Parts List Conventions

Parts List Notation

Explains symbols and notation used in the parts list for resistors, capacitors, and units.

Parts List by Unit (Except Japan)

1 U-3469 Power Unit Parts

List of semiconductor and resistor parts for the 1U-3469 POWER UNIT (Except Japan model).

1 U-3470 Connect;Video Unit Parts

1 U-3471 Control Unit Parts

1 U-3472 Amp Connect Unit Parts

1 U-3474 DSP Unit Parts

1 U-3486 Audio;Digital Unit Parts

Parts List by Unit (For Japan)

1 U-3469 Power Unit Parts (Japan)

1 U-3470 Connect;Video Unit Parts (Japan)

1 U-3471 Control Unit Parts (Japan)

1 U-3472 Amp Connect Unit Parts (Japan)

1 U-3475 Z-2 Comp.D4 Unit Parts (Japan)

1 U-3486 Audio;Digital Unit Parts (Japan)

Exploded View and Parts List

Exploded View of Components

Visual representation of the unit's components and their assembly order.

Exploded View Parts List

Detailed list of all parts referenced in the exploded view, categorized by unit.

Denon AVR-2803 Specifications

General

Power Output	90 W per channel (8 ohms, 20 Hz - 20 kHz, 0.05% THD)
Channels	7.1
Dolby Support	Dolby Digital, Dolby Pro Logic II
Digital Inputs	2 coaxial, 3 optical
Weight	14.5 kg
Type	AV Receiver
Output Power per Channel	90 W (8 ohms, 20 Hz - 20 kHz, 0.05% THD)
Frequency Response	10 Hz - 100 kHz (+1, -3 dB)
Input Sensitivity	200 mV
Input Impedance	47 kOhms
Total Harmonic Distortion	0.05%
Input Sensitivity/Impedance	200 mV / 47 kOhms
Tuner Frequency Range	FM: 87.5 - 108 MHz, AM: 522 - 1611 kHz
DTS Support	DTS, DTS-ES, DTS Neo:6
Outputs	Composite: 2, Component: 1
Video outputs	Composite: 2