Denon AVR-2105/885 Manual de usuario

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.

AVR2105/885 / AVC-1890

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-2105/885 / AVC-1890

LEVEL DIAGRAMS

FRONT/CENTR/SURROUND/SURROUND BACK

DIR

DSP D/A

D/A

6dB

MUTE

-- +

D/A

HPF

MUTE

0dB6CH IN

10dB

20dB

30dB

40dB

6CH IN

0dB

10dB

20dB

30dB

40dB

6CH IN

CD IN

-12dB

---

-30dBFS

-10dBFS

0dBFS

A/D

-30dBFS

-23dBFS

-20dBFS

-10dBFS

0dBFS

-30dBFS

-20dBFS

-10dBFS

0dBFS

+--

-15dB 15.5dB

15.5dB

MUTE

25.5dB

-35.5dB

ATT

6CH IN

DIGITAL

6CH IN

CD IN

A/D IN

REV AMP

A/D IN

REV AMP

-20dBFS

D/A OUT

70.8mV REF

6dB

D/A OUT

100mV REF

D/A OUT

LPF REV AMP

SURR/SB

CENTER

SUM S/W

SW SUM

REV AMP

VOL 00

MUTE

POWER AMP

D/A OUT

100mV REF

-20dB

-10dB

-20dB

-10dB

TONE CONTROL

-18dB

H/P OUT

(200mV)

FRONT

A/D IN

REV AMP

INPUT

BUFFER

AMP

DSP OUT

-18dB

VOL 00

PRE AMP

SPK OUT

FRONT

2.83V

(1W/8ohm)

CENTER

SURROUND

SURROUND BACK

SPK OUT

CENTER

SURROUND

SPK OUT

2.83V

(1W/8ohm)

H/P OUT

47mV

(0.27mW/8ohm)

SPK OUT

FRONT

AVR-2105/885 / AVC-1890

SUB WOORER

OdB

D/A

LFE

-- +

D/A

LFE

6dB

MUTE MUTE

6CH IN

-30dB

-20dB

-5dB

30dB

DSP OUT

-20dBFS

6dB

+--

VOL 00

21.5dB

-10dB

20dB

10dB

-30dBFS

-10dBFS

0dBFS

Front D/A Out

100mV ref

D/A OUT

LPF REV AMP SW SUM

REV AMP

SUB WOOFER

PRE OUT

SUB WOOFER

PRE OUT

373mV

(112mV)

(200mV)

Config1 -38dBFS

10.5dB

TO FRONT CH

6CH INPUT

SUB_WOOFER

Config2 -28dBFS

10dB -18dB

PRE AMP

AVR-2105/885 / AVC-1890

FRONT VS SW

A/D

DIR

+--

6CH IN (200mV)

DIGITAL

CD IN

6CH IN

-12dB

A/D IN

REV AMP

A/D IN

REV AMP

A/D IN

REV AMP

HPF

D/A OUT

LPF

-31.2dB

MUTE

REV AMP

SUM S/W

SW SUM

REV AMP

-11.66dB

ELECTRIC

VOLUME

21.56dB up

PRE AMP

-13.14dB

MUTE

POWER AMP

-35.5dB down

-20dB

-10dB

0dB

10dB

20dB

30dB

40dB

6CH IN

CD IN +

INPUT

BUFFER

AMP

---

0dBFS

DSP with

Tone control

-38dBFS

-30dBFS

-20dBFS

-10dBFS

Front

0dBFS

D/A

-13.2dB

1.54dB up

-16.7dB 18dB down

ATT

-20dBFS

18dB down

16.6dB up

-13.06dB

26.02 dB up

-30dBFS

-10dBFS

FRONT

6.8dB up

Config1

6.8dB up

D/A

-34.7dB

-29.66dB

14.5dB up H/P OUT

73mV

SPK OUT

FRONT

4.35V

H/P OUT

SPK OUT

FRONT

FRONT VS SW

D/A OUT

100mV REF

AVR-2105/885 / AVC-1890

BLOCK DIAGRAM

13 4

414

LINE_2

DSDATA4

DSDATA2

DAI_P13(80)

< AVR1805 E2,G2A,E3,EK,G1C,G1K >

LINE_1

LINE_2

LINE_3

E3 ONLY

EX_SW

EX_SL

Selector

HPF

DATA

256fs

ADC

PD/RST

MUTING

L.P.F

FM & AM

TA1270

64fs

V.AUX

VCR2

V.AUX

TV/DBS

VCR

RMC GND

FCX10-03

25MHz

INH

OUT

+5.6V

Q1022

Q1028

Y/C

EX_C

EX_SR

EX_FL

CXP 740010

RESONATOR

ÝÂ×î

KEY_MATRIX

IC1008

DIR

TUNER

AVR

-36V

TC94A27UG

LC75721NE

7809

7906

MAIN +B

7805

SBR

SURR L

SBR

VCR

LINE_2

LINE_3

LINE_1

LINE_2

AM ANT

FM ANT

VCR2

VCR1

V.AUX

TUNER

TV/DBS

COAXIAL

EX_SR

EX_FR

EX_FL

EX_C

12.288MHz

INPUT

DIR

PLL CIRCUIT

AM TUNING

IF FILTER

64fs

ADC

MPX IC

DIGITAL

FILTER

DIGITAL

FILTER

SERIAL DATA

I/O PORT

Y/Cb/Cr

64fs

TV/DBS

VCR1

DVD/VDP

VCR2

VCR1

TV/DBS

CXA1511M

MUTE

RAM

IC1004

S-VIDEO DET

+5.6V

Q1012

Q1027

MIX

EX_SL

EX_FR

u-COM

12MHz

AMP

Y/C

Q1014

FL DRIVER

DSP

u-COM

DSP

VOLUME

FL DRIVER

7806

7915

7805

7815

MAIN -B

FILAMENT AC

SBL

CENTER

+SURR R

SBL

SPK A

MIC IN

PHONO

ADIN(24)

SLRCK(23)

LINE_3

LINE_1

IF IC

ALRCLK/FSTDM

DSDATA3

DSDATA1

DAI_P15(82)

DAI_P14(81)

REMOTE CONT

IN/OUT

MUTE

H/P OUT

SPK B

TV/DBS

ANALOG OUT

REC_SWITCHIG INPUT_SWITCHIG

XIN

Lock Detect Selector

VOLUMEDLRCLK

MCLK

VOLUME

DBCLK

RDATA(21)

RMCK(16)

74LCX244

VIDEO SWITCH BA7626

DVD/VDP

VCR2 OUT

INH

C-VIDEO INPUT

DVD/VDP

DAC

DAI_P11(78)

NJM2274R

COMPONENT DET

+5.6V

SW F SUM

DATA

1.2V

CODEC

TC90A69F

+5V(A/DPOWER)

DSP_FR

ANA_IN

DATA

JAPAN ONLY

DVD/VDP

ANALOG IN

DIGITAL IN

LOOP FILTER

FROM u-COM

FRONTEND

IF AMP

TC9274-011 TC9273-004

DEMODULATION

D-VIDEO OUTPUT

IF FILTER

CODEC

AD1837

VOLUME

ASDATA

SBCK(22)

RBCK(17)

RLRCK(20)

BUFFER

VCR1 OUT

VCR2 OUT

VCR1 OUT

S-VIDEO INPUT

VIDEO SWITCH BA7626

VIDEO SWITCH

COMP-VIDEO

INPUT

RELAY

DAC

DIGITAL

FILTER DAC

DIGITAL

FILTER DAC

SELECTOR

74LVX157

ADSP-21266

DAI_P10(77)

DAI_P9(71)

DAI_P12(79)

ROM

128K X 8 128K X 8

MONITOR OUT

IC1001

IC1007

IC606

OSD

LC74781

IC1001

C-VIDEO DET

IC1008

RMC DATA

TA1270

Y/Cb/Cr

TUNER PLL

MONITOR OUT

3.3V

IC1004

VIDEO POWER

FUNCTION,OP AMP

7805

FUNCTION,OP AMP

RELAY B+

MONITOR OUT

FLT

EX_SW

CENTER

ANA_HFP

AUDIO SWITCHING

ANA_HFP

TC9164

FLT DRIVER

16-ST-66GNK

POWER S/W (1ó-)

DIGITAL OUT

LC89057W-VF4

VOLUME

CONTROL PORT

ABCLK

RMC IN/OUT

VIDEO SWITCH BA7626

DIGITAL

FILTER

CLOCK

DIGITAL

FILTER

DAI_P16(86)

DAI_P20(94)

CLK_IN(142)

DIGITAL AUDIO DECODER

IC74781_19PIN

SEP OUT

IC74781_5PIN

BLANK OUT

VIDEO POWER

COMP-VIDEO

DSP_FL

FL DISPLAY

RELAY

D-VIDEO INPUT

(JAPAN ONLY)

OPTICAL_4

OPTICAL_3

CONTROL DATA

FRONT A L

6CH_INPUT

MULTI OUT

VCR2 OUT

VCR1 OUT

CDR/TAPE OUT

DVD/VDP

CDR/TAPE

FROM MICOM

OPTICAL_2

OPTICAL_1

POWER S/W (2ó-)

+5V (DSP PART PWR)

Switched

INPUT

POWER AMP

DIGITAL AUDIO

FRONT B R

FRONT B L

FRONT A R

SPEAKER OUT

PRE OUT

AVR-2105/885 / AVC1890

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SPEAKERS-Abuttonand

SPEAKERS-B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. SPEAKERS-Aボタンと SPEAKERS-B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-2105/885 / AVC-1890

ADJUSTMENT

Audio Section

Idling Current

Required measurement equipment : DC Voltmeter

調整に必要な測定器:直流電圧計

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.)

(1)セットをクーラ、扇風機のそばなど風通しの良い場所を避け、通常の使用状態に置きます。セットの周囲温度は

15〜30℃、湿度は常湿とします。

Adjustment

(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106,107 on SURR.-BACK ch Amp.

Unit at full counterclockwise ( ) position.

(2) Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103,

SURROUND-Lch:TP101, SURROUND-Rch:TP102, SURROUND-BACK Lch:TP106, SURROUND-BACK Rch:TP107).

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

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

MODE : 7CH STEREO

FUNCTION : CD

(5) Within 2 minutes after the power on, turn VR101 clockwise ( ) to adjust the TEST POINT voltage to 1.5 mV ±0.5 mV

DC.

(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.5 mV ±0.5 mV DC.

(7) Adjust the Variable Resistors of other channels in the same way.

(1)上カバーをはずし、パワーアンプ基板のVR101,VR102,VR103,VR104,VR105及びSurr.Backアンプ基板のVR106,107を

反時計方向( )に回し切った状態にセットします。

(2)テストポイント(FRONT‑Lch: TP104, FRONT‑Rch: TP105, CENTER ch: TP103, SURROUND‑Lch: TP101,

SURROUND‑Rch:TP102,SURROUND‑BACKLch:TP106,SURROUND‑BACKRch:TP107)に直流電圧計を接続します。

(3)電源コードをAC100V（95〜105Vの範囲でも可）に接続し、電源スイッチを"ON"にします。

(4)ＯＮ後、次のようにセットします。

●VOLUME（音量調節つまみ）→反時計方向( )に回す、最小の状態にする。

●SPEAKER‑A（スピーカ端子）→無負荷（スピーカ、ダミー抵抗器などを接続しない。）

MODE:7CHSTEREO

FUNCTION:CD

(5)2分以内にVR101を時計方向( )に回しテストポイントの電圧を次のように調整します。

1.5mV±0.5mVDC

(6)予備調整から10分後VR101を回し、次のように電圧を設定します。

2.5mV±0.5mVDC

(7)同じ方法で各チャネルの可変抵抗を調整します。

VR104

TP104

VR105

TP105

VR107

VR106

TP107

TP106

S BR

S BL

S Rch

VR102

TP102

VR103,TP103

C ch

VR101,TP101

F Lch

S Lch

F Rch

DC Voltmeter

AVR-2105/885 / AVC-1890

Video Section (For U.S.A., Canada & Japan)

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 VR608, VR609, VR610 on

C-S VIDEO2 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 VR610 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 Cr: VR609 and Cb:

VR608 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) C-S VIDEO2

( )

(2) Y(Cb, Cr) 75

Oscilloscope

(3) DVD VIDEO PLAYER SDVD

(4)

"ON"

(5) ON

FUNCTION DVD

75 (Title12)

(6) VR610 ( )

Y(H.Sync )(Fig.1 )

714mV ±50mVp-p

(7) Cr: VR609 Cb: VR608

(Fig.2 3 )

Cb,Cr: 525±50 mVp-p.

VR608, VR609, VR610

AVR-2105/885 / AVC-1890

Oscilloscope

VR610 VR608

VR609

Video Section

MONITOR OUT

(Y, Cb, Cr)

CrYCb

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