Denon AVR-1404 - Service Manual

Other manuals for Denon AVR-1404

Operating Instructions56 pages

Questions and Answers

J
James StephensAug 17, 2025
What to do if my Denon Receiver remote control is not working?
- G
  gibsonannaAug 17, 2025
  If your Denon Receiver isn't responding to the remote, there are several potential causes: * The batteries may be dead. Try replacing them with new ones. * You might be too far from the unit. Try moving closer. * There could be an obstruction. Make sure there's nothing blocking the path between the remote and the receiver. * You may be pressing the wrong button, so ensure you are pressing the correct button. * The batteries might be inserted incorrectly. Check that the + and - ends are properly aligned.
M
Mitchell SimsAug 19, 2025
Why is there no sound from my Denon Receiver but the display is on?
- R
  Roy GardnerSep 12, 2025
  If your Denon Receiver display is lit but no sound is coming out, consider these possibilities: * Speaker cords might not be securely connected. Ensure they are properly connected. * The audio function button may be in the wrong position. Adjust it to the correct setting. * The volume control might be set too low. Increase the volume to a suitable level. * Muting may be enabled. Turn off muting. * If you're using digital input, either input digital signals or select the correct input jacks for the digital signals.
M
Mark CaseyAug 22, 2025
How to fix Denon Receiver sound only coming from one channel?
- L
  Laura StanleyAug 22, 2025
  If you're only getting sound from one channel on your Denon Receiver, it could be due to: * Speaker cords not being fully connected. Ensure they are securely connected. * Input/output cords not being fully connected. Ensure that these are also securely connected.
S
seanloganAug 25, 2025
Why is there no display and sound from my Denon Receiver when the power is on?
- L
  lisa68Aug 26, 2025
  If your Denon Receiver's display is not lit and there's no sound when the power is on, it could be due to the power cord not being securely plugged in. Check that the power cord is properly inserted. Also, after turning the power operation switch on, try turning the power on with the remote control.
N
nmarshAug 27, 2025
Why is my Denon AVR-1404 Stereo Receiver display not lit and there is no sound?
- K
  Kimberly CarterAug 28, 2025
  If the display is not lit and no sound is coming from your Denon Stereo Receiver when the power switch is on, the power cord may not be securely plugged in. Check the power cord's insertion. After turning the POWER operation switch on, turn the power off with the remote control unit.
T
Theresa AllenAug 30, 2025
What to do if the display is not displayed and the power indicator flashes at a high rate on my Denon Receiver?
- B
  Brooke HallAug 30, 2025
  If the display of your Denon Receiver isn't showing anything and the power indicator is flashing rapidly, this could indicate a few issues: * The speaker terminals may be short-circuited. Turn off the power, ensure the speakers are correctly connected, and then turn the power back on. * The ventilation holes might be blocked. Turn off the power, allow the unit to ventilate and cool down, then turn it back on. * The unit may be operating at continuous high power with inadequate ventilation. Turn it off, ventilate to cool it down, and then turn it back on.
S
stevensmithSep 2, 2025
Why are the instruments reversed during stereo playback on my Denon Receiver?
- R
  Richard BenderSep 2, 2025
  If the instruments sound reversed during stereo playback on your Denon Receiver, it's likely due to reversed connections of the left and right speakers, or the left and right input/output cords. Double-check all left and right connections to ensure they are correct.
M
Maria HolmesSep 4, 2025
What to do if my Denon Stereo Receiver display is not displayed and the “ON/STANDBY” LED flashes at a high rate?
- R
  Ryan LeeSep 5, 2025
  If the display isn't showing and the “ON/STANDBY” LED is flashing rapidly, it could be due to short-circuited speaker terminals, blocked ventilation, or the unit overheating from continuous high power usage with poor ventilation. To resolve this: * Turn off the power. * Ensure speakers are correctly connected. * Switch the power back on. If that doesn't work, turn off the receiver, ensure it has adequate ventilation to cool down, and then turn it back on.
M
Michael BrownSep 7, 2025
Why is my Denon AVR-1404 not working with the remote control?
- S
  Sue GonzalezSep 7, 2025
  If your Denon Stereo Receiver isn't responding to the remote control, the issue might be due to several reasons: * The batteries may be dead, so try replacing them with new ones. * You might be too far from the unit; try moving closer. * There could be an obstacle blocking the signal; remove any obstructions. * Ensure you are pressing the correct button. * Also, check that the batteries are inserted with the correct polarity (+ and -).
J
jay05Sep 10, 2025
What to do if sound is only coming from one channel on my Denon AVR-1404?
- M
  Margaret MurphySep 12, 2025
  If sound is only coming from one channel of your Denon Stereo Receiver, it's likely due to an incomplete connection of either the speaker cords or the input/output cords. Ensure all connections are securely connected.

Summary

Safety Precautions

Leakage Current Check

Check leakage current or line to chassis resistance before returning unit to customer.

Service Precautions

Important notes for service: avoid shock, use specified parts, proper assembly, post-service checks.

Safety Critical Parts

Details on safety critical parts and how they are marked in diagrams and parts lists.

Disassembly

Top Cover Removal

Procedure to remove the top cover by unscrewing it.

Front Panel Removal

Rear Panel Removal

Block Diagram

Adjustment

Tuner Section Alignment

Procedures for FM and AM alignment, including connection diagrams and tables.

Audio Section

Idling Current Adjustment

Detailed steps for measuring and adjusting idling current for audio channels.

Parts List of P.W.B. Unit

Semiconductors Group

Resistors Group

Capacitors Group

Other Parts Group

Wiring Diagram

Schematic Diagrams (1;7)

Schematic Diagrams (2;7)

Schematic Diagrams (3;7)

Schematic Diagrams (4;7)

Schematic Diagrams (5;7)

Schematic Diagrams (6;7)

Schematic Diagrams (7;7)

Denon AVR-1404 Specifications

General

Channels	5.1
Type	AV Receiver
Total Harmonic Distortion (THD)	0.08%
Frequency Response	20 Hz - 20 kHz
Input Sensitivity/Impedance	200 mV / 47 k ohms
Signal-to-Noise Ratio	98 dB
HDMI Inputs	3
HDMI Output	1
Power Output (per channel)	75W (8 ohms, 20Hz-20kHz, 0.08% THD)
Digital audio input	Optical, Coaxial
Tuner Frequency Range	FM: 87.5 - 108 MHz, AM: 522 - 1611 kHz