Denon S-302 Service Manual (English)

Other manuals for Denon S-302

Owner's Manual63 pages

Quick Setup Guide5 pages

Code List3 pages

Questions and Answers:

D
Daniel VazquezAug 17, 2025
What to do if my Denon S-302 Home Theater System power turns off suddenly and power indicator flashes red?
- L
  Laura FitzgeraldAug 17, 2025
  If the Denon Home Theater System suddenly turns off and the power indicator flashes red, it could be due to several reasons. First, the protection circuit might have been activated because the internal temperature rose too high; in this case, turn off the power, let the unit cool down completely, and then turn it back on. Alternatively, core wires of two speakers might be touching, or a core wire might be sticking out and touching the rear panel, which also activates the protection circuit; to resolve this, unplug the power cord, twist the core wires tightly or terminate the speaker cables, and then reconnect them. Finally, the set itself might be damaged; if this is the case, turn off the power and contact a DENON service center.
W
wrightjeffreyAug 19, 2025
Why Denon Home Theater System does not work properly when remote control unit operated?
- J
  Jennifer KingAug 20, 2025
  If your Denon Home Theater System isn't working properly when you use the remote control, several factors could be the cause. Start by replacing the batteries with new ones. Make sure you are operating the remote within the specified range and that there are no obstacles blocking the signal between the remote and the main unit. Also, ensure the batteries are inserted correctly, matching the polarity marks in the battery compartment. Strong light, such as direct sunlight or fluorescent bulbs, can interfere with the remote sensor, so move the set to a location where the sensor isn't exposed to strong light. Lastly, check the SOURCE CONTROL switch position and set it to the device you want to control.
R
ryanpetersonAug 22, 2025
What to do if my Denon S-302 Home Theater System display lit but sound not produced?
- M
  Mary ParkerAug 22, 2025
  If the display is lit but no sound is coming from your Denon Home Theater System, check a few things. Ensure the speaker cables are securely connected. Verify that the device you want to play matches the selected input source on the system. Make sure the volume isn't set to the minimum; increase it to a suitable level. Also, check if MUTING is turned on and, if so, switch it off. Lastly, if you've selected a digital input, ensure digital signals are being input, or select the correct input terminal receiving the digital signals.

Denon S-302 Specifications

General

Audio decoders	-
RMS rated power	100 W
Audio output channels	5.1 channels
Audio formats supported	AAC, MP3, WAV, WMA
Signal-to-Noise Ratio (SNR)	92 dB
Satellite speaker frequency range	80 - 90000 Hz
Subwoofer type	Active subwoofer
Wireless subwoofer	No
FM radio	Yes
AM band range	52 - 1710 kHz
FM band range	87.5 - 107.9 MHz
Supported radio bands	AM, FM
Disc loading type	Tray
Disc types supported	CD-R, CD-RW, DVD+R, DVD+RW, DVD-R, DVD-RW
Playback disc formats	CD audio, CD video, VCD
Number of optical discs	1 discs
Optical disc player type	DVD player
HDMI in	0
USB version	2.0
Audio (L/R) in	3
Composite video in	2
Digital audio coaxial in	1
AC input voltage	120 V
AC input frequency	60 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	78 W
Product color	Black
Apple docking compatibility	iPod
Video formats supported	DIVX

Weight and Dimensions

Subwoofer weight	11200 g
Subwoofer dimensions (WxDxH)	212 x 406 x 378 mm
Front speaker dimensions (WxDxH)	131 x 76 x 335 mm

Summary

SAFETY PRECAUTIONS

Leakage Current and Laser Safety

Crucial checks for leakage current and laser safety before returning the unit.

Servicing Safety Guidelines

Essential cautions for electric shock, parts handling, and post-service inspection.

ADV-S302 DIMENSIONS

DSW-S302 DIMENSIONS

SC-S302 DIMENSIONS

WIRE ARRANGEMENT

ADV-S302 Wire Arrangement

Detailed steps for correctly routing and securing wires within the ADV-S302 unit.

DSW-302 WIRE ARRANGEMENT

DISASSEMBLY PROCEDURES

ADV-S302 Disassembly Steps

Procedures for removing the side panel and top cover of the ADV-S302 unit.

DRIVE UNIT REMOVAL

Disc Tray Ejection Methods

Steps for drive unit removal based on disc tray ejection status.

FRONT PANEL ASSEMBLY REMOVAL

Front Panel Assy Steps

Detailed instructions for detaching the front panel assembly by removing screws and wires.

REAR PANEL ASSEMBLY REMOVAL

Rear Panel Assy Steps

Instructions for removing the rear panel assembly by unscrewing specific parts.

DSW-S302 DISASSEMBLY

DSW-S302 Rear Panel and Shield Cover Removal

Steps to remove rear panel and shield cover of DSW-S302, with caution.

ATTACHING ANTI-SLIP PADS

Pad Attachment for Speaker Stand and Wall Bracket

Instructions for applying anti-slip pads to speaker stands and wall brackets.

OPTICAL PICKUP DIAGNOSIS AND REPLACEMENT

Laser Drive Current Check

Procedure to diagnose optical pickup failure based on laser drive current values.

LASER PICKUP HANDLING AND REPLACEMENT

Iop Checked Method and Precautions

Method to check laser drive current and safety notes for handling the laser pickup.

LASER CURRENT AND TIME SETTINGS

Laser Current Adjustment and Reset

How to rewrite laser current and reset accumulated laser on time.

TRAVERSE UNIT REPLACEMENT PROCEDURE

Disassembly Steps and Notes

Detailed steps and notes for disassembling the traverse unit, including clamp bracket and tray.

SERVICE MODE OPERATIONS

Aging Mode Procedure

Steps for performing aging mode on the DVD, including preparation and error display.

INITIAL SETTING AND FIRMWARE CHECK MODES

Initial Setting Mode

Procedures for initializing system and DVD data, including standby indicator and display messages.

Microcomputer Firmware Check Mode

Steps to display version information, microprocessor versions, and region codes.

TEST MODE OPERATIONS

Entering and Selecting Test Modes

Procedure to enter and select modes like Laser ON/OFF, Servo adjustment, Trace, and Accumulated time.

TROUBLESHOOTING

ADV-S302 Troubleshooting Guide

Guide for diagnosing and resolving common issues with the ADV-S302 unit.

BLOCK DIAGRAMS

ADV-S302 Block Diagram

System overview diagram illustrating the connectivity and main blocks of the ADV-S302.

SEMICONDUCTOR INFORMATION

ES6178FF Pinout Diagram

Pin configuration diagram for the ES6178FF IC (IC101: 1U-3808).

PARTS LIST NOTES

Parts List Conventions and Warnings

Explains symbols, notations, and warnings for the parts list, emphasizing critical components.

PWB UNIT PARTS LIST

Semiconductor Parts List

List of semiconductors used in PWB units, including part numbers and remarks.

EXPLODED VIEW

DVD Mechanism Exploded View

Visual breakdown of the DVD mechanism unit components for assembly reference.

SCHEMATIC DIAGRAMS

Schematic Diagram Conventions

Explains symbols and notations used in schematic diagrams, including resistance and capacitance values.

1U-3807 FEP Unit Schematics

Detailed circuit diagrams for the 1U-3807 FEP Unit.

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