Denon AVC-3808 User Manual

Denon Brand Company, D&M Holdings lnc.
e
●
For purposes of improvement, specifications and
design are subject to change without notice.
●
Please use this service manual with referring to the
operating instructions without fail.
●
Some illustrations using in this service manual are
slightly different from the actual set.
注 意
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために、さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
●
本機の仕様は性能改良のため、予告なく変更すること
があります。
●
補修用性能部品の保有期間は、製造打切後 8 年です。
●
修理の際は、必ず取扱説明書を参照の上、作業を行っ
てください。
●
本文中に使用しているイラストは、説明の都合上現物
と多少異なる場合があります。
X0343 V.06 DE/CDM 0907
SERVICE MANUAL
AV SURROUND RECEIVER
AV SURROUND AMPLIFIER
MODEL JP EU EC E2 EK E2A E1C EUT
AVR-3808CI
33
AVR-3808
333
AVC-3808
33
Ver. 6
2
Please refer to the
MODIFICATION NOTICE.

Denon AVC-3808 Specifications

General

Brand	Denon
Model	AVC-3808
Category	Receiver
Language	English

Summary

SAFETY PRECAUTIONS

Leakage Current Check

Procedure to check for leakage current before unit return to ensure customer safety.

Servicing and Inspection Points

Essential guidelines and warnings for safe servicing, including electrical precautions and proper assembly.

Important Safety Parts

Information on identifying and using critical safety components with specific properties.

DIMENSIONS

Unit Dimensions

Diagrams showing the physical dimensions of the unit.

WIRE ARRANGEMENT

Wire Arrangement Viewed from Top

Illustration of internal wiring from the top perspective to prevent noise generation.

DISASSEMBLY

Top Cover

Procedure for disassembling the top cover.

Front Panel Unit

Steps for disassembling the front panel and its sub-assemblies.

Back Panel Unit

Steps for removing the back panel assembly.

Power Unit

Steps for disassembling the power unit.

Radiator Unit

Steps for removing the radiator unit.

Transformer

Procedure for disassembling the transformer.

CAUTIONS IN SERVICING

Replacing Digital P.W.B. and CPU P.W.B.

Instructions for replacing digital and CPU boards, including initialization.

Initializing AV SURROUND RECEIVER/AMPLIFIER

Procedure for initializing the unit after component replacement.

JIGs for Servicing

Information on required jigs for circuit board repair.

CHECK WITH TEST MODE

µcom/DSP Error Display Mode

How to enter and interpret the µcom/DSP error display mode.

MULTI TROUBLE SHOOTING

Power Issues

Troubleshooting steps for power-related problems, including not turning on and fuse issues.

ANALOG VIDEO

MONITOR OUT (CVBS) Output NG

Troubleshooting flow for issues with CVBS monitor output.

HDMI/DVI

No Picture or Sound Output

Troubleshooting steps for HDMI/DVI connection problems leading to no video or audio output.

NETWORK/USB

Cannot Connect to Network

Troubleshooting steps for network connectivity issues.

USB Device Not Recognized

Troubleshooting steps for issues with USB device recognition.

DIGITAL AUDIO CIRCUIT CHECK

No Sound Output

Steps to check digital audio connections and settings for sound output issues.

CHECKING THE OPERATION

Analog Input Operation Check

Procedures for verifying analog input signal operation.

DSP Operation Check

Steps to check the operation of DSP units.

DPMS UPDATE

Display on FL Display

Explanation of DPMS update status messages shown on the FL display.

BLOCK DIAGRAMS (1/3)

ANALOG AUDIO BLOCK DIAGRAM

Overall block diagram of the analog audio circuitry.

SEMICONDUCTORS

IC's

List of major semiconductors (ICs) with their pin functions and board references.

NOTE FOR SCHEMATIC DIAGRAM

WARNING

Critical warnings regarding parts with specific characteristics and replacement procedures.

CAUTION

Safety checks, including leakage current and line-to-chassis resistance.

NOTICE

General notices on resistance, capacitance, and voltage measurements.