Denon AVR-2105 Service Manual

SERVICE MANUAL
MODEL AVR-2105/885
AVC-1890
AV SURROUND RECEIVER / AMPLIFIER
Tokyo, Japan
X0206V.01 DE/CDM 0407
For U.S.A., Canada, Europe, U.K.,
Asia, China,Taiwan R.O.C., Korea
& Japan model
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。
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.
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。
補修用性能部品の保有期間は、製造打切後8年です。
注 意
For purposes of improvement, specifications and
design are subject to change without notice.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Denon AVR-2105 Specifications

General

Power Output	90 W per channel (8 ohms, 20 Hz - 20 kHz, 0.08% THD)
Number of Channels	7.1
Component Video Inputs	3
AM/FM Tuner	Yes
Response Bandwidth	10 Hz - 100 kHz
Signal-To-Noise Ratio	102 dB
THD	0.08%
Input Impedance	47 kOhm
Input Sensitivity	200 mV
Tuner Bands	AM/FM
Digital Sound Processor (DSP)	Yes
HDMI Switching	No
Video Conversion/Scaling	No
Output Impedance / Channel	8 ohm
Frequency Response	10 Hz - 100 kHz
Total Harmonic Distortion	0.08%
Dolby Decoding	Dolby Digital, Dolby Pro Logic II
DTS Decoding	DTS, DTS Neo:6
Digital Audio Inputs	2 coaxial, 5 optical
Audio D/A Converter	24bit / 192kHz
Tuner Frequency Range	AM: 522 - 1611kHz, FM: 87.5 - 108MHz
Dimensions (W x H x D)	434 x 171 x 377 mm
Output Power / Channel	90W (8 ohms, 20Hz-20kHz, 0.08% THD)

Summary

Service Manual

Service Precautions

Important safety and operational notes for servicing the unit, including reading the manual and following precautions.

Safety Precautions

Leakage Current Check Procedure

Procedure for checking leakage current or line-to-chassis resistance to ensure unit safety before customer return.

Block Diagram

Caution in Servicing

Initializing AV Surround Receiver

Procedure for initializing the AV surround receiver, including button combinations and expected outcomes.

Adjustment

Audio Section Adjustment

Procedure for adjusting the audio section, including preparation steps and mode settings.

Idling Current Adjustment

Detailed steps for adjusting idling current, including test points, voltage settings, and timing.

Video Section Adjustment (US, Canada, Japan)

Component Video Level Adjustment

Procedure for adjusting component video Y, Cb, and Cr levels using test disc and oscilloscope.

Printed Wiring Boards

Main PWB Unit (Component Side Layout)

CPU, Front PWB Unit

CNT, Pre-Amp PWB Unit

Input/Video PWB Unit (US, Canada, Japan Models)

DSP PWB Unit

D-Video PWB Unit (Japan Model)

Parts List of PWB Unit Assembly (USA & Canada)

CPU, Front PWB Unit Semiconductor Components (Parts List)

Parts List of PWB Unit Assembly (UK)

Main PWB Unit Parts List (UK)

List of semiconductor components (ICs, transistors, diodes) for the main PWB (UK version).

Parts List of PWB Unit Assembly (Japan)

Main PWB Unit Parts List (Japan)

List of semiconductor components (ICs, transistors, diodes) for the main PWB (Japan version).

Exploded View (USA, Canada Model)

Exploded View Parts List

Parts List of Exploded View (USA & Canada)

Main PWB Unit Parts List (USA & Canada)

List of parts corresponding to the exploded view for USA and Canada models.

Parts List of Exploded View (Europe, Asia & Korea)

Main PWB Assembly Parts List (Europe, Asia, Korea)

List of main PWB assembly parts for Europe, Asia, and Korea models.

Parts List of Exploded View (UK & China)

Main PWB Unit Parts List (UK & China)

List of main PWB unit parts for UK and China models.

Parts List of Exploded View (Taiwan R.O.C.)

Main PWB Unit Parts List (Taiwan R.O.C.)

List of main PWB unit parts for Taiwan R.O.C. models.

Parts List of Exploded View (Japan)

Main PWB Assembly Parts List (Japan)

Wiring Diagram

Notes for Schematic Diagrams

Schematic Diagrams (1/16)

Input Board Part 1 Schematic

Schematic Diagrams (2/16)

Input Board Part 2 Schematic

Input Unit Schematic (2/2)

Schematic Diagrams (3/16)

DSP Unit Schematic (1/2)

Schematic Diagrams (4/16)

DSP Unit Schematic (2/2)

Schematic Diagrams (5/16)

Surround Back Amp Board Schematic

Schematic Diagrams (6/16)

Pre-Amp Board Schematic

6-Channel Input Unit Schematic

Schematic Diagrams (7/16)

Main Unit Schematic

Schematic diagram of the main unit, showing major sections and their interconnections.

Schematic Diagrams (8/16)

CPU Board Schematic

Schematic Diagrams (9/16)

Input Unit Schematic (1/2)

Schematic Diagrams (10/16)

Video Board Part 2 (S-Video) Schematic

Schematic Diagrams (11/16)

Schematic Diagrams (12/16)

C-Video Unit Schematic

Schematic Diagrams (13/16)

Component Video Unit Schematic (Excluding US, Canada, Japan)

Schematic Diagrams (14/16)

S-Video Unit Schematic

Input/Video CNT Unit Schematic

Schematic Diagrams (15/16)

Component-Video Unit Schematic (Excluding US, Canada, Japan)

Schematic Diagrams (16/16)

Front, Switch, Headphone, S-Video, Optical Input Units Schematics