Denon AVR-3805 User manual

SERVICE MANUAL

MODEL

AVR-3805

AVC-3890

AV SURROUND RECEIVER / AMPLIFIER

16-11, YUSHIMA 3-CHOME, BUNKYO-KU, TOKYO 113-0034 JAPAN

X0197V.02DE/CDM 0403

For Europe & Asia 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.

2AVR3805 / AVC-3890

SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis

resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the

power cord is less than 460 kohms, the unit is defective.

(1)

(2)

500V

(1)

(2)

AVR-3805/ AVC-3890

WIRE ARRANGEMENT ワイヤー整形図

If wire bundles are untied or moved to perform adjustment or

parts replacement etc.,be sure to rearrange them neatly as

they were originally bundled or placed afterward.

Otherwise, incorrect arrangement can be a cause of noise

generation.

Wire arrangement viewed from the top

AVR-3805 / AVC-3890

CAUTIONINSERVICING

●InitializingAVSURROUNDRECEIVER

AVSURROUNDRECEIVERinitializationshouldbe

performedwhenthemcom,peripheralpartsofmcom,

andDSPP.W.B.arereplaced.

1. Switchofftheunit.

2. HoldthefollowingPUREDIRECTbuttonandDI-

RECTbutton,andswitchontheunit.

3. Checkthattheentiredisplayisflashingwith

anintervalofabout1second,andreleaseyour

fingersfromthe2buttonsandthemicroprocessor

willbeinitialized

Note:・Ifstep3doesnotwork,startoverfromstep1.

・Allusersettingswillbelostandthisfactorysetting

willberecoveredwhenthisinitializationmode.

Somakesuretomemorizeyoursettingfor

restoringaftertheinitialization.

サービス時の注意事項

●AVサラウンドアンプの初期化について

マイコンやマイコン周辺部品、DSP 基板等を交換した場

合は、AV サラウンドアンプの初期化を行って下さい。

1. オン／オフボタンを OFF にします。

2. PUREDIRECTボタンと DIRECTボタンを同時に押

しながら、オン／オフボタンを押して ON にしま

す。

3. ディスプレイ表示が約 1秒間隔で点滅するのを

確認後、2つのボタンから指を離します。

●マイコンが初期化されます。

注意 :・上記 3 の状態にならない場合は、もう一度操作 1

からやり直してください。

 ・初期化を行うとお客様が設定した内容が工場出荷

状態に戻りますので、あらかじめ設定内容を

控えておき初期化後再設定してください。

AVR-3805/ AVC-3890

ADJUSTMENT 調整

Audio Section

Idling Current (1U-3469-1)

Required measurement equipment: DC Voltmeter

Preparation

(1) Avoid direct blow from an air conditioner or an electric

fan, and adjust the unit at normal room tempereture 15

°C ~ 30 °C (59 °F ~ 86 °F).

(2) Presetting

POWER (Power sourse switch) OFF

SPEAKER (Speaker terminal) No load

(Do not connect speaker, dummy resistor, etc.)

Adjustment

(1) Remove top cover and set VR101, VR102, VR201,

VR301, VR302, VR401, VR402, on 1U-3469-1 (Power

Unit) at fully counterclockwise ( ).

(2) Connect DC Voltmeter to test points (FRONT-Lch:

TP301

1 2

pin, FRONT-Rch: TP101

5 6

pin,

CENTER ch: TP301

3 4

pin, SURROUND-Lch: TP101

pin, SURROUND-Rch: TP101

pin,

SURROUND BACK-Lch: TP301

pin, SURROUND

BACK-Rch: TP301

pin).

(3) Connect power cord to AC Line, and turn power switch

"ON".

(4) Presetting.

MASTER VOLUME : "---" counterclockwise ( min.)

MODE : 7CH STEREO

FUNCTION : CD

(5) Allow 2 minutes, and turn VR101 clockwise ( ) to

adjust the TEST POINT voltage to 6.5 mV ±0.5 mV DC.

(6) After 10 minutes from preset, turn VR101 to set the

voltage to 8 mV ±0.5 mV DC.

(7) Adjust the Variable Resistors of other channels in the

same way.

(8) After 5 minutes from (6), turn VR101 to set the voltage to

8 mV ±0.5 mV DC.

(9) Adjust the Variable Resistors of other channels in the

same way.

(1U-3469-1)

: DC Voltmeter

(1)

15 30

(2)

OFF



( )

(1) 1U-3469-1

VR101, VR102, VR201, VR301, VR302, VR401, VR402

( )

(2) (FRONT-Lch: TP301

pin, FRONT-

Rch: TP101

5 6

pin, CENTER ch: TP301

pin,

SURROUND-Lch: TP101

pin, SURROUND-Rch:

TP101

1 2

pin, SURROUND BACK-Lch: TP301

7 8

pin, SURROUND BACK-Rch: TP301

5 6

pin) DC

Voltmeter

(3) AC100V 95 105V

"ON"

(4) ON

MASTER VOLUME

( )

SPEAKER

MODE : 7CH STEREO

FUNCTION : CD

(5) 2 VR101 ( )

6.5mV ±0.5mV DC

(6) 10 VR101

8mV ±0.5mV DC

(7)

(8) (6) 5VR101

8mV ±0.5mV DC

(9)

AVR-3805/ AVC-3890

DC Voltmeter

FL ch

C ch

SBR ch

SBL ch

VR402

VR401

SBR ch

SBL ch

VR102

FR ch

VR101

FL ch

VR201

SR ch

SL ch

FR ch

C ch

VR301

SL ch

VR302

SR ch

TP301

TP101

Audio Section

AVR-3805/ AVC-3890

Video Section

Component Video Level Adjustment

Required measurement equipment etc: Oscilloscope, DVD

VIDEO PLAYER (ex: DVD-1500)

Test Disc: DVD T-S01

Preparation

(1) Avoid direct blow from an air conditioner or an electric

fan, and adjust the unit at normal room temperature 15

°C ~ 30 °C (59 °F ~ 86 °F).

(2) Playback the color-bar 75% of the Test Disc (Title 12)

using the DVD Video Player, and check that Y and C

levels of the S terminal output are within the specified

output levels.

If they are out of the specified levels, adjust with the

variable resister inside of the unit.

(3) Presetting

POWER (Power source switch) OFF

SPEAKER (Speaker terminal) No load

(Do not connect speaker, dummy resistor, etc.)

DVD (Video terminal) No input

Adjustment

(1) Remove top cover and set VR101, VR102, VR103 on

1U-3475-1 (Convert Unit) at fully counterclockwise ( ).

(2) Connect a pin-plug terminated with 75-ohms to Y(Cb,

Cr) of the Component Video Monitor Output, and hook

up the Oscilloscope's probe to both ends of the pin-plug.

(3) Connect S terminal output of the DVD Player with the

DVD input terminal of the Receiver.

(4) Connect power cord to AC Line, and turn power switch

"ON".

(5) Presetting

FUNCTION: DVD



Playback the color-bar 75% of the Test Disc (Title 12)

(6) Turn VR101 clockwise ( ) to adjust the

COMPONENT VideoY voltage (except H.Sync) to 714

±50 mVp-p. (Refer to Fig.1)

(7) Adjust the Variable Resistors of Cb: VR102 and Cr:

VR103 in the same way. (Refer to Fig. 2, 3)

Cb,Cr: 486±50 mVp-p. (U.S.A. & Canada model)

525±50 mVp-p. (Others)

: Oscilloscope, DVD VIDEO PLAYER

(: DVD-1500)

: DVD T-S01

(1)

15 30

(2) DVD VIDEO PLAYER

75 (Title12) S Y C

(3)

OFF



( )

DVD

(1) 1U-3475-1

VR101, VR102, VR103 ( )

(2) Y(Cb, Cr) 75

Oscilloscope

(3) DVD VIDEO PLAYER SDVD

(4)

"ON"

(5) ON

FUNCTION DVD

75 (Title12)

(6) VR101 ( )

Y(H.Sync )(Fig.1 )

714mV ±50mVp-p

(7) Cb: VR102 Cr: VR103

(Fig.2 3 )

Cb,Cr: 525±50 mVp-p.

AVR-3805/ AVC-3890

VR102

VR101

VR103Cr

Oscilloscope

Component Video Y

Video Section

AVR-3805/ AVC-3890

714±50mV

p-p

Volts IRE:FLT Y-Signal

-20.0 -10.0 0.0 10.0 20.0 30.0

0.5 0.0

100.0

0.5

40.0 50.0 60.0

486±50mV (U.S.A. & Canada model)

p-p

525±50mV (Others)

p-p

Volts IRE:FLT

0.0 20.0 40.0

-0.5

-50.0

50.0

0.0

0.5

0.0

60.0 80.0

486±50mV (U.S.A. & Canada model)

p-p

525±50mV (Others)

p-p

Volts IRE:FLT

0.0 20.0 40.0

-0.5

-50.0

50.0

0.0

0.5

0.0

60.0 80.0

Fig.1 Component Video Y signal

Fig.2 Cb signal

Fig.3 Cr signal

AVR-3805 /AVC-3890

AUDIO BLOCK DIAGRAM

RECOUT

INPUT

DENON LINK (3rd EDITION)

COAX1

OPT1

&+4

DL SL/SR

DL C/SW

DL FL/FR

DSP

D/A

PCM179

D/A

PCM179

＋

MUTE

＋

MUTE

PLD

ADSP-21266 EPM3032A

D/A

PCM179

D/A

PCM179

MUTE

SBR

SBL

SL/FL

DSD_SL

FR/SR

DSD_FR

SBL/C

DSD_SBL

SW/SBR

DSD_SW

PCM_SL/FL

DSD_SL

PCM_FR/SR

DSD_FR

PCM_SBL/C

DSD_SBL

PCM_SW/SBR

DSD_SW

−−

−A/D

PCM180

㧙

㧗

ADDATA

＋

8ch

EXT.IN

−

＋

MUT

−

＋

−

＋

−

＋

−

＋

−

＋

−

＋

−

＋

SBL/ZONE3L

ZONE2L

ZONE2R

SBR/ZONE3R

INPUT

PHONO

DVD

VDP

DBS

V-AUX

VCR-1

VCR-2

CDR

SBL

SBR

MUT

























SL-A

SR-A

SBL/

ZONE3L

ZONE3R

SBR/













SL-B

SR-B

RECOUT

VCR-1

VCR-2

CDR

＋

Rch

AUDIO

SELECT

＋

COAX2

OPT2

OPT3

OPT4

OPT5

OPT6

INPUT

SELECT

REC

SELECT

SBR

SBL

E.Vol TC94A32FG

㧗

EXT-SBR

EXT-SBL

EXT-SL

EXT-FL

EXT-FR

EXT-SR

EXT-C

EXT-SW

SBL

SBR

FLlarg

FLsmal

FRlarg

FRsma

ZONE3L

ZONE3R

LC89057W-VF4-E

−

＋

−

＋

−

＋

−

＋

−

＋

−

＋

−

＋

−

＋

TC9459F

SIGNAL SELECTOR

TC9274N-017

MUT

H/P

H/P L

H/P R

＋＋

MIC

V-AUX

ZONE1

ZONE2

ZONE3

ZONE2L

ZONE2R

TC94A46FG

DSD_SR

DSD_C

DSD_SBR

DSD_FL

DSD_SBR

DSD_C

DSD_SR

DSD_FL

LINEOUT

ZONE3L

ZONE3R

MUT

TUNER

H/POUT

SPOUT

PREOUT

Except

Japan

model

＋

Lch

AUDIO

SELECT

−−

−㧙

㧗

Japan

model

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