Denon AVR-1804 Manuel utilisateur

SERVICE MANUAL

MODEL

AVR-1804/884

AVC-1880

AV SURROUND RECEIVER / AMPLIFIER

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

X0173V.01 DE/CDM 0307

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

2AVR1804/884 / AVC-1880

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-1804/884 / AVC-1880

LEVEL DIAGRAMS

FRONT/CENTR/SURROUND/SURROUND BACK

20dB

10dB

0dB

(200mV)

-10dB

-20dB

6CH IN

40dB

30dB

0dB

(200mV)

-10dB

-20dB

-12dB

6CH IN

CD IN

-10dBFS

-30dBFS

-20dBFS

6CH IN

CENTER

SURROUND

SURROUND BACK

DSP OUT

-10dBFS

-20dBFS

-30dBFS

D/A +

MUTE

6dB

D/A OUT

100mV REF

D/A

-10dBFS

0dBFS

-20dBFS

-30dBFS

-23dBFS

D/A OUT

70.8mV REF

6dB

D/A OUT

100mV REF

CENTER

SURR/SB

6CH IN

CD IN

0dBFS

A/D

+- --A/D

10dB

20dB

30dB

40dB

FRONT

INPUT

BUFFER

AMP

A/D IN

REV AMP

A/D IN

REV AMP

A/D IN

REV AMP

DIR

DIGITAL

D/A OUT

LPF REV AMP SW SUM

REV AMP

HPF

MUTE

DSP D/A ----

SUM S/W

D/A

0dBFS

MUTE

ELECTRIC

VOLUME PRE AMP TONE POWER AMP

SPK OUT

FRONT

2.83V

(1W/8ohm)

SPK OUT

FRONT

ATT H/P OUT

-18dB

-15dB

VOL 00

25.5dB

15.5dB

VOL 00

MUTE

15.5dB

-18dB

H/P OUT

47mV

(1W 8ohm)

-35.5dB

25.5dB

SPK OUT

CENTER

SURROUND

SPK OUT

2.83V

(1W/8ohm)

AVR-1804/884 / AVC-1880

SUB WOORER

10dB

10.5dB

6dB

Config1 -38dBFS

Config2 -28dBFS LFE

-20dBFS

-30dBFS

LFE

6dB

Front D/A Out

200mV ref

6CH IN

0dBFS

-10dBFS

D/A

OdB

10dB

20dB

30dB

-10dB

-20dB

-30dB

-5dB

(200mV)

(112mV)

MUTE

+D/A

SUB_WOOFER

----DSP OUT

D/A OUT

LPF SW SUM

REV AMP

6CH INPUT

MUTE

ELECTRIC

VOLUME PRE AMP

SUB WOOFER

PRE OUT

SUB WOOFER

PRE OUT

150mV

-15dB

21.5dB

VOL 00

TO FRONT CH

AVR-1804/884 / AVC-1880

BLOCK DIAGRAM

LINE_1

TV/DBS

LINE_2

LINE_3

DVD/VDP

LINE_3

LINE_2

LINE_1

D-VIDEO INPUT

JAPAN ONLY

VCR2 OUT

MULTI OUT

EX_SR

EX_SL

EX_FR

EX_FL

6CH_INPUT

EX_C

FM ANT

EX_SW

AM ANT

LOOP FILTER

E3 ONLY

MUTING

FROM u-COM

FRONTEND

IF FILTER

PLL CIRCUIT

IF FILTER

AM TUNING

IF AMP

MPX IC

FM & AM

IF IC

L.P.F

BUFF

HPF

L/R SUM

DIGITAL

FILTER

ADC

CODEC

AD1837

VOLUME

DIGITAL

FILTER DAC

RMC GND

CXA1511M

RMC IN/OUT

< AVR1804 E1,E2,E3,EK,E1H,E1C >

C-VIDEO INPUT

COMP-VIDEO

INPUT

DVD/VDP

TV/DBS

DVD/VDP

TV/DBS

VIDEO SWITCH

VCR-1

VCR-2

VCR1 OUT

V.AUX

INH

D-VIDEO OUTPUT

LINE_3

LINE_2

LINE_1

S-VIDEO INPUT

VIDEO SWITCH

INH

DVD/VDP

TV/DBS

VCR-1

VCR-2

V.AUX

VCR-1 OUT

VCR-2 OUT

VCR2 OUT

REC_SWITCHIG

ANALOG IN

DIGITAL IN

COAXIAL

OPTICAL_4

OPTICAL_3

OPTICAL_2

OPTICAL_1

DVD/VDP

CDR/TAPE

TV/DBS

VCR1

VCR2

PHONO

V.AUX

TUNER

(JAPAN ONLY)

ANALOG OUT

CDR/TAPE OUT

VCR1 OUT

DIGITAL OUT

RCLK1(68)

TCLK1(65)

ROM

512K X 8

TCLK2(47)

RAM

64KX16

74LV244

BUFFER

64fs

64fs RBCK(17)

DIR

LC89057W-VF4

DIGITAL AUDIO DECODER

SERIAL DATA

I/O PORT

COUT

DIGITAL

FILTER

ADC

FROM MICOM

TC9274-011

INPUT_SWITCHIG

TC9273-004

Lock DetectSelector

XMCK

Selector

INPUT

DEMODULATION

DATA

RDATA(21)

RLRCK(20)

RMCK(16)256fs

CCLK

CLATCH

CIN

ALRCK

MCLK

ABCLK

ASDATA

DSDATA1

CLOCKCONTROL PORT

VOLUME

FL/FR/C/SL/SR/SW/SB

256fs

MELODY 32

PF6(41)

RFS1(69)

RCLK0(61)

DR0(60)

DR1(67)

CLK_IN(132)

DT0(56)

TCLK0(57)

VOLUME

DIGITAL

FILTER

VOLUME

DIGITAL

FILTER

DIGITAL

FILTER

DAC

SW F SUM

TUNER PLL

DATA CXP740096

u-COM

CONTROL DATA

DIGITAL AUDIO

AUDIO SWITCHING

TC9164

TC9482

VOLUME

EX_FL

DSP_FL

ANA_HFP

ANA_IN

FLT DRIVER

DATA LC75721NE

FL DRIVER

EX_C

CENTER

EX_SR

EX_SW

EX_SL

ANA_HFP

ANA_IN

DSP_FR

EX_FR

REMOTE CONT

IN/OUT

12MHz

RESONATOR KEY_MATRIX

TC9184

TONE POWER AMP

TONE DFT CON.

FL DISPLAY

16-ST-42GNK

SPK A

SPEAKER OUT

FRONT A L

FRONT A R

FRONT B L

SPK B

SURR L

SURR R

FRONT B R

CENTER

BA7626

1212

IC1001

IC1004

IC1001

+5V

MONITOR OUT

Q653

MONITOR OUT

Q1014Q656

12133

IC1004 IC1008

3.3V

2.5V

DSP

DIR

BA7626

IC606

OSD

LC74781

115

S-VIDEO DET

BA7626

IC1001

BA7626

C-VIDEO DET

IC1008

NJM2509V

13 4 3

Q1022

IC1008

IC1007

Q1012

MUTE

+5.6V (Y,CB,CR SWITCHING SAME)

+5.6V

RMC DATA

OUT

KIC9459

AVR

RELAY B+

-36V

FLT

M5-MT

L601

Y/C

MIX

Y/C

ÝÂ×î

YCY

Q1017

7805

+5V (A/D POWER)

FUNCTION,OP AMP

TUNER

VIDEO POWER

+5V (DSP PART PWR)

FUNCTION,OP AMP

CODEC

7915

7805

LOW DROP

7805

7815

MAIN -B

MAIN +B

MUTE

H/P OUT

PRE OUT

SURR BACK/MULTI

FL DRIVER

u-COM

FILAMENT AC

7805

RELAY

AVR-1804/884 / AVC-1880

ADJUSTMENT

Tuner Section (AVR-1804/884 only)

CONNECTION DIAGRAM OF MEASURING INSTRUMENTS



FM

STEREO

MODULATOR

FM SSG

Digital

Voltmeter

75ohm

T402 T403

IC402

VR402

TUNER B'D

R471

20 +14

−10 dB



AM

T402 T403

IC402

TUNER B’D

R471

VR401

FM ALIGNMENT

Input Output Adjustment

Step Alignment

Item

Tuning

Frequency

Setting Type Frequency Input

Level Modulation Coupling Type Connect to Points Adjust to

1Center

Adjustment

98.1MHz

(98.0MHz) FM SSG 98.1MHz 60dBµMono

1kHz 100%

Antenna

Terminal

Digital

Voltmeter R471 T402 ±50mV

2 Distortion 98.1MHz

(98.0MHz) FM SSG 98.1MHz 60dBµMono

1kHz 100%

Antenna

Terminal

Distortion

Meter

Output

Terminal (L) T403 Minimum

Distortion

3 Repeat Steps 1 and 2

4 Signal Level 98.1MHz

(98.0MHz) FM SSG 98.1MHz 20dBµOFF Antenna

Terminal

Light “TUNED” on

FL Display VR402

AM ALIGNMENT

Output Adjustment

Step Alignment

Item Frequency Input Type Connect to Points Adjust to Remarks

1 Signal Level 999 (1000)

kHz AM SSG 

VR401 Light “TUNED” on

FL Display

SSG OUTPUT

74dBµ(EMF)

AVR-1804/884 / AVC-1880

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 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 ch: CP106).

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

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

MODE : 6CH 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 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ch:CP106) 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:6CH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

TR104

VR105

TP105

VR106

CP106

S Back ch

S Rch

VR102

TP102

VR103,TP103

C ch

VR101,TP101

F Lch

S Lch

F Rch

DC Voltmeter

AVR-1804/884 / AVC-1880

SEMICONDUCTORS

Onlymajorsemiconductorsareshown,generalsemiconductorsetc.areomittedtolist.

主な半導体を記載しています。汎用の半導体は記載を省略しています。



IC’s

CXP740010

(IC201)

PH7

PH6

PH5

PH4

PH3

PH2

PH1

PH0

PK7/TO1

RST

XTAL

EXTAL

PK6/CS0

PK5/SI0

PK4/SO0

PK3/SCK0

PF7/AN11

PF6/AN10

PF5/AN9

PC6

PC7

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

PK1/TX

PK2/TEX

PI1/RMC

PI2/NMI

PI3/TO0/ADJ

PI4/INT1/CS1

PI5/SCK1

PC5

PC4

PC3

PC2

PC1

PC0

PB7/SI2

PB6/SO2

PB5/SCK2

PB4/TO2

PB3

PB2

PB1

PB0

PJ7

PJ6

PJ5

PJ4

PJ3

PJ2

PJ1

PJ0

PD7

PD6

PD5

PD4

PD3

PD2

PD1

PD0

PI6/SO1

PI7/SI1

PE0/INT0

PE1/INT2

PE2/PWM0

PE3/PWM1

PE4

PE5

PE6

PE7

PG0/TxD

PG1/RxD

PG2/EC0

PG3/EC1

PG4/EC2

PG5/INT3

PG6/INT4

PG7/CINT

AN0

AN1

AN2

AN3

PF0/AN4

PF1/AN5

PF2/AN6

PF3/AN7

REF

PF4/AN8

100

TOP VIEW

CXP740096 Terminal Function

1 9274 STB O TC9274 CONTROL

2 9274 73 9164 CLK O TC9274/TC9273/TC9164 CONTROL

3 9274 73 9164 DAT O TC9274/TC9273/TC9164 CONTROL

4 FRONT MUTE O FRONT MUTE

5 9273 CE O TC9273 CONTROL

6 ERR MUTE O ERR MUTE

7 ERR MUTE OFF O ERR MUTE OFF

8 89057 AUDIO I LC89057 CONTROL

9 89057 EMPHA I LC89057 CONTROL

10 SW SUM O SW SUMMING CONTROL

11 M32 SDIN I DATA INPUT FROM MELODY32

12 89057 SDIN I DATA INPUT FROM LC89057

13 EPROM RESET O EPROM RESET

14 89057 RESET O LC89057 RESET

15 M32 CS O MELODY32 CS

16 M32 SDOUT O MELODY32 CONTROL DATA

17 89057 CE O LC89057 CE

18 89057 1837 SDOUT O CONTROL DATA

19 89057 1837 SCLK O CONTROL CLOCK

20 1837 RESET O CODEC RESET

21 9164 CE O TC9164 CONTROL

22 SW MUTE O SW MUTE

23 RELAY SPK B O SURROUND BACK RELAY

No. Pin Name FunctionI/O

AVR-1804/884 / AVC-1880

No. Pin Name FunctionI/O

24 RELAY SPK A O FRONT A RELAY

25 RELAY SURR O SURROUND RELAY

26 RELAY CNT O CENTER RELAY

27 RELAY H/P O H/P RELAY

28 FUNC UP I ENCODER INPUT(FUNCTION)

29 H/P DETECT I H/P DETECT

30 FUNC DOWN I ENCODER INPUT(FUNCTION)

31 NC -

34 SURR MUTE O

SURROUND MUTE

KIC9459 CONTROL STB

ZONE2/SURROUND BACK : SELECTION RELAY

FRONT B RELAY

35 9459 STB

36 MULTI SB RLY

37 RELAY SPK B

38 FL DRV RESET O LC75721NE RESET

39 RELAY POWER O POWER RELAY

40 RESET I RESET

41 GND I

42 XTAL

43 EXTAL

44 FL DRV CE O LC75721NE CE

45 FL DRV DATA O LC75721NE DATA

46 FL DRV/2090 CLK O CONTROL CLOCK

47 2090 DATA O BU2090F DATA

48 VOL DOWN I ENCODER INPUT(VOLUME)

49 VOL UP I ENCODER INPUT(VOLUME)

50 SEL DOWN I ENCODER INPUT(SELECT)

51 SEL UP I ENCODER INPUT(SELECT)

52 AV

53 V

REF

54 AV

55 89057 INT

56 GND

57 STEP OPT I AREA SELECT

LC89057 INT

58 SET OPT I MODEL SELECT

59 GND

60 KEY IN3 I KEY INPUT

61 KEY IN2 I KEY INPUT

62 KEY IN1 I KEY INPUT

63 9K/10K STEP I TUNER STEP SELECT

64 PROTECT I PROTECTION

65 C-VIDEO DET I

Composite Signal detect input (H: Signal input)

S Signal detect input (H: Signal input)

66 M32 SCLK O MELODY32 CLOCK

67 1837 CE O CODEC CE

68 M32 RESET O MELODY32 RESET

69 S-VIDEO DET

70 STBY LED O

STANDBY LED

LC74781 CONTROL ENABLE

LC74781 CONTROL CLOCK

71 NC

72 NC

73 74781 CS

74 74781 SCLK

75 SURR BACK MUTE O SURROUND BACK MUTE

76 2090 CLK2 O BU2090 CONTROL CLOCK2 (VIDEO)

32 CNT MUTE O CENTER MUTE

33 NC

AVR-1804/884 / AVC-1880

No. Pin Name FunctionI/O

77 PWR DOWN I

POWER DOWN DETECT

78 RDS CLK O

TDA7330 CONTROL CLOCK

79 RDS DATA O TDA7330 CONTROL DATA

MUTE power ON/OFF switching

80 MUTE PWR

81 9184 CE O TC9184 CONTROL

82 M32 INTREQ I/O MELODY32 CONTROL

83 MULTI MUTE O MULTI MUTE

84 S. MONITOR DET S Monitor connection detect input (L: Connected)

85 REMOCON I

REMOTE CONTROL SIGNAL INPUT

86 GND

87 GND

88 V

89 V

VDD BACK UP

90 NC

91 TC9482 CE O TC9482 CONTROL

92 PLL DATA O PLL CONTROL (LC72131), DATA (TC9482, TC9184, KIC9459)

PLL CONTROL (LC72131), CLOCK (TC9482, TC9184, KIC9459)

PLL CONTROL (LC72131),

93 PLL CLK O

94 PLL DT IN O

95 TU MUTE O TUNER MUTE

96 STEREO I STEREO DETECT

97 TUNED I TUNED DETECT

98 PLL CE O PLL CONTROL

99 2090 CLK 1 VIDEO O BU2090 CONTROL CLOCK1 (VIDEO)

100 2090 DATA VIDEO O BU2090 CONTROL DATA (VIDEO), LC74781 CONTROL DATA

A15

A14

A13

A12

A11

I/O0

I/O1

I/O2

I/O3

Vcc

GND

I/O4

I/O5

I/O6

I/O7

A10

I/O15

I/O14

I/O13

I/O12

GND

Vcc

I/O11

I/O10

I/O9

I/O8

A0-A15

64K x 16

MEMORY ARRAY

DECODER

COLUMN I/O

CONTROL

CIRCUIT

GND

VCC

I/O

DATA

CIRCUIT

I/O0-I/O7

Lower Byte

I/O8-I/O15

Upper Byte

PIN DESCRIPTION

Pin Name

Address inputs

Symbol

A0-A15

Data Inputs/Outputs

I/O0-I/O15

Chip Enable Input

Output Enable Input

Write Enable Input

Lower-byte Control (I/O0-I/O7)

Upper-byte Control (I/O8-I/O15)

No ConnectionNC

Power

GroundGND

IS61LV6416 (IC806)

PIN DESCRIPTION

Pin Name

Address Inputs

Symbol

A0-A18

Data Input/Outputs, Command Inputs

DQ0-DQ7

Data Input/Outputs

DQ8-DQ14

Data Input/Output or Address Input

DQ15A-1

Chip Enable

Output Enable

Write Enable

Reset/Block Temporary Unprotect

Ready/Busy OutputRB

Byte/Word OrganizationBYTE

Supply VoltageV

GroundV

No Connected InternallyNC

Don’t Use as Internally ConnectedDU

A1 A0

A2 E

A3 V

A4 G

A5 DQ0

A6 DQ8

A7 DQ1

A17 DQ9

A18 DQ2

RB DQ10

NC DQ3

NC DQ11

RP V

W DQ4

NC DQ12

NC DQ5

A8 DQ13

A9 DQ6

A10 DQ14

A11 DQ7

A12 DQ15A-1

A13 V

A14 BYTE

A15 A16

M29W800T

A0-A18

DQ0-DQ14

M29W800AT

DQ15A-1

BYTE

M29W800AT (IC805)

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Sherwood NewCastle R-772 Manuel utilisateur

Audio

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AllSee

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DEMAG

DEMAG DRC-DR D2 Manuel utilisateur

Teleco

Teleco TVRCL868A02 Manuel utilisateur

Bosch

Bosch RF3222E Manuel utilisateur

Kramer

Kramer 631R Manuel utilisateur

Xpress

Xpress xmc10 Manuel utilisateur

JVC

JVC KD-MR1BTS Manuel utilisateur

Omega Engineering

Omega Engineering UWTC-REC3 Manuel utilisateur

e-survey

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