Denon AVR-1804, AVR-884, AVR-1880 Service Manual

For U.S.A., Canada, Europe, U.K.,
Asia, China,Taiwan R.O.C., Korea
& Japan model

SERVICE MANUAL

MODEL

AV SURROUND RECEIVER / AMPLIFIER

AVR-1804/884
AVC-1880

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。

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.

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

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。

X0173V.01 DE/CDM 0307

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.

500V

1M

2AVR1804/884 / AVC-1880

(1)

(2)

(1)

(2)

2

LEVEL DIAGRAMS

FRONT/CENTR/SURROUND/SURROUND BACK

AVR-1804/884 / AVC-1880

3

6CH IN

DIGITAL

CD IN

6CH IN

40dB

30dB

20dB

10dB

0dB

(200mV)

-10dB

-20dB

INPUT

BUFFER

AMP

+---A/D

A/D IN

REV AMP

A/D IN

A/D IN

REV AMP

REV AMP

DIR

FRONT

A/D

0dBFS

6CH IN

CD IN

-12dB

-10dBFS

-20dBFS

-30dBFS

D/A OUT

LPF

HPF

+

DSP D/A ----

D/A

0dBFS

-10dBFS

-20dBFS

-30dBFS

D/A OUT

100mV REF

+

MUTE

6dB

REV AMP

SW SUM

REV AMP

SUM S/W

-18dB

ELECTRIC

VOLUME

PRE AMP TONE POWER AMP

+

15.5dB

VOL 00

MUTE

25.5dB

ATT H/P OUT

-35.5dB

SPK OUT

FRONT

SPK OUT

FRONT

2.83V

(1W/8ohm)

H/P OUT

47mV

(1W 8ohm)

6CH IN

6CH IN

(200mV)

40dB

30dB

20dB

10dB

-10dB

-20dB

SPK OUT
CENTER

SURROUND

CENTER

DSP OUT

D/A +

+

SURROUND

SURROUND BACK

D/A

0dBFS

-10dBFS

0dB

-20dBFS

-23dBFS

-30dBFS

D/A OUT

100mV REF

D/A OUT

70.8mV REF

6dB

MUTE

CENTER

SURR/SB

6dB

-15dB

-18dB

15.5dB

VOL 00

MUTE

25.5dB

SPK OUT

2.83V

(1W/8ohm)

3

SUB WOORER

AVR-1804/884 / AVC-1880

4

6CH IN

SUB_WOOFER

6CH INPUT

30dB

20dB

10dB

OdB

(200mV)

-5dB

(112mV)

-10dB

-20dB

-30dB

0dBFS

-10dBFS

-20dBFS

Config2 -28dBFS

-30dBFS

Config1 -38dBFS

D/A OUT

LPF

+D/A

MUTE

D/A

Front D/A Out

200mV ref

6dB

LFE

6dB

6dB

LFE

REV AMP

10.5dB

10dB

SW SUM

REV AMP

----DSP OUT

TO FRONT CH

-15dB

ELECTRIC

VOLUME

VOL 00

PRE AMP

+

21.5dB

MUTE

SUB WOOFER

PRE OUT

SUB WOOFER

PRE OUT

150mV

4

BLOCK DIAGRAM

AVR-1804/884 / AVC-1880

5

DIGITAL OUT

DIGITAL IN

ANALOG IN

(JAPAN ONLY)

ANALOG OUT

CDR/TAPE OUT

6CH_INPUT

TV/DBS

DVD/VDP

D-VIDEO INPUT

JAPAN ONLY

OPTICAL_1

OPTICAL_2

OPTICAL_3

OPTICAL_4

COAXIAL

PHONO

CDR/TAPE

DVD/VDP

TV/DBS

VCR1

VCR2

V.AUX

TUNER

VCR1 OUT

VCR2 OUT

MULTI OUT

E3 ONLY

FM ANT

AM ANT

LINE_1

LINE_2

LINE_3

LINE_1

LINE_2

LINE_3

ROM

512K X 8

TCLK2(47)
TCLK1(65)
RCLK1(68)

RFS1(69)

PF6(41)
RCLK0(61)

TCLK0(57)

DR1(67)
DR0(60)

INPUT

DIR

LC89057W-VF4

DEMODULATION

Lock DetectSelector

&

XMCK

DATA

Selector

BUFFER
74LV244

64fs

64fs

RBCK(17)

fs

RLRCK(20)

RMCK(16)256fs

64fs

fs

fs

256fs

RDATA(21)

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

MCLK

ALRCK

TC9274-011

REC_SWITCHIG

+

TC9273-004

INPUT_SWITCHIG

FROM MICOM

CCLK

CLATCH

CIN

COUT

CD

ABCLK

SERIAL DATA

I/O PORT

ASDATA

DSDATA1

VOLUME

VOLUME

VOLUME

CLOCKCONTROL PORT

DIGITAL

FILTER

DIGITAL

FILTER

DAC

DAC

VOLUME

DIGITAL

ADC

-

ADC

IF FILTER

EX_FL
EX_FR
EX_SL

EX_SR
EX_C
EX_SW

+

L

R

FM

FRONTEND

L/R SUM

BUFF

--

IF FILTER

+

-

+

HPF

IF AMP

AM TUNING

LOOP FILTER

PLL CIRCUIT

FROM u-COM

Y

CB

CR

Y

CB

CR

LINE_3

LINE_2

CODEC
AD1837

LINE_1

CB

CR

D-VIDEO OUTPUT

FILTER

VOLUME

DIGITAL

FILTER

DAC

VOLUME

DIGITAL

FILTER

VOLUME

DIGITAL

FILTER

DAC

VOLUME

RMC IN/OUT

DVD/VDP

TV/DBS

COMP-VIDEO

INPUT

FM & AM

IF IC

MPX IC

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

C-VIDEO INPUT

DVD/VDP

TV/DBS

VCR-1
VCR-2

V.AUX

L.P.F

MUTING

Y

VCR1 OUT
VCR2 OUT

S-VIDEO INPUT

DVD/VDP

TV/DBS

VCR-1

VCR-2

V.AUX

VCR-1 OUT
VCR-2 OUT

CLK_IN(132)

RMC GND

RAM

64KX16

DIGITAL AUDIO DECODER

DT0(56)

+

+

+

+

+

+

+

IN

VIDEO SWITCH

VIDEO SWITCH

VIDEO SWITCH

INH

VIDEO SWITCH

VIDEO SWITCH

INH

MELODY 32

MUTE

CXA1511M

BA7626

BA7626

BA7626

BA7626

BA7626

REMOTE CONT

TUNER PLL

DATA CXP740096

--

-

SW F SUM

-

-

-

+5.6V

OUT

RMC DATA

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

C-VIDEODET

IC1001

2

IC606

13 4

15

LC74781

15

1

OSD

S-VIDEODET

Y

C

Q1022

IC1004

+5V

IC1001

3

IC1008

5

1

15

2

13

14

1212

9

MONITOR OUT

RESONATOR KEY_MATRIX

IN/OUT

12MHz

u-COM

DIGITAL AUDIO

CONTROL DATA

IC1008

1

15

2

IC1007

NJM2509V

Y/C
MIX

Q1012

C

5

IC1001

4

Q653

CENTER

Q1017

ANA_IN

ANA_HFP

DSP_FL

EX_FL

ANA_IN

ANA_HFP

DSP_FR

EX_FR

SL

EX_SL

SR

EX_SR

EX_C

SW

EX_SW

12133

14

IC1004

AUDIO SWITCHING

L601
M5-MT

Y/C

ÝÂ×î

YCY

FLT DRIVER

DATA

TC9164

MONITOR OUT

121413

IC1008

Q1014Q656

SPEAKER OUT

FL DRIVER
LC75721NE

VOLUME

TC9482

KIC9459

FL DISPLAY

16-ST-42GNK

+

TONE
TC9184

TONE DFT CON.

POWER AMP

+

+

+

+

+

MUTE

-36V

FLT

AVR

FUNCTION,OP AMP

TUNER

+5V (A/D POWER)

FUNCTION,OP AMP

+5V (DSP PARTPWR)

VIDEO POWER

DSP

DIR

DSP

RELAY B+

7805

CODEC

2.5V

3.3V

7815

7915

7805

7805

MAIN +B

MAIN -B

LOW DROP

u-COM

FL DRIVER

FILAMENT AC

7805

+

RELAY

+

FRONT A L

-

+

FRONT A R

-

+

FRONT B L

-

+

FRONT B R

-

+

-

+

-

+

-

+

-

+

-

SPK A

SPK B

SURR L

SURR R

CENTER

H/P OUT

SW

PRE OUT

SURR BACK/MULTI

5

ADJUSTMENT

Tuner Section (AVR-1804/884 only)

CONNECTION DIAGRAM OF MEASURING INSTRUMENTS



 FM



T402 T403

R471

IC402

AVR-1804/884 / AVC-1880

STEREO
MODULATOR

6

VR402

TUNER B'D

FM ALIGNMENT

Alignment

Step



 AM



Item

Center

1

Adjustment

2 Distortion

3 Repeat Steps 1 and 2

4 Signal Level

Tuning

Frequency

Setting

98.1MHz

(98.0MHz)

98.1MHz

(98.0MHz)

98.1MHz

(98.0MHz)

Type Frequency

FM SSG 98.1MHz 60dBµ

FM SSG 98.1MHz 60dBµ

FM SSG 98.1MHz 20dBµ OFF

Input Output Adjustment

Input

Level

Modulation Coupling Type Connect to Points Adjust to

Mono

1kHz 100%

Mono

1kHz 100%

75ohm

Antenna
Terminal

Antenna
Terminal

Antenna
Terminal

FM SSG

Digital
Voltmeter

Digital

Voltmeter
Distortion

Meter

Light “TUNED” on

Terminal (L)

FL Display

R471 T402 ± 50mV

Output

T403

VR402

Minimum

Distortion

+14

20

−10

dB

AM ALIGNMENT

Step

1 Signal Level

Alignment

Item

Frequency Input

999 (1000)

kHz

AM SSG

T402 T403

R471

IC402

VR401

TUNER B’D

Output Adjustment

Type Connect to Points Adjust to



VR401

Light “TUNED” on

FL Display

Remarks

SSG OUTPUT

74dBµ (EMF)

6

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 (

(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".

) position.

7

(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。

DC Voltmeter

F Lch

S Lch

S Back ch

C ch

S Rch

F Rch

VR104

TR104

VR101,TP101

VR106

CP106

VR103,TP103

VR102

TP102

VR105

TP105

7

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)

PC6

PC7

PA0

PA1

PA2

PA3

PA4

DDVSS

PK1/TX

PK2/TEX

PI1/RMC

PA5

PA6

PA7NCV

PI2/NMI

AVR-1804/884 / AVC-1880

PI3/TO0/ADJ

PI4/INT1/CS1

PI5/SCK1

8

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

999897969594939291

100

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

31

32333435363738394041424344454647484950

PH7

PH6

PH5

PH4

PH3

PH2

908988878685848382

TOP VIEW

SS

V

PH1

PH0

RST

PK7/TO1

CXP740096 Terminal Function

Pin
No.

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

Pin Name FunctionI/O

81

PF5/AN9

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
AV

DD

AV

REF

AV

SS

PF4/AN8

80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

XTAL

EXTAL

PK5/SI0

PK6/CS0

PK4/SO0

PF7/AN11

PF6/AN10

PK3/SCK0

8

AVR-1804/884 / AVC-1880

9

Pin
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 ­32 CNT MUTE O CENTER MUTE
33 NC
34 SURR MUTE O
35 9459 STB
36 MULTI SB RLY
37 RELAY SPK B

­SURROUND MUTE
KIC9459 CONTROL STB

O
O

ZONE2/SURROUND BACK : SELECTION RELAY
FRONT B RELAY

-

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
54 AV

SS

REF

DD

55 89057 INT
56 GND

-

-

­LC89057 INT

-

-

57 STEP OPT I AREA SELECT
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 IIComposite 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
71 NC
72 NC
73 74781 CS
74 74781 SCLK

S Signal detect input (H: Signal input)
STANDBY LED

-

-

LC74781 CONTROL ENABLE

O

LC74781 CONTROL CLOCK

O
75 SURR BACK MUTE O SURROUND BACK MUTE
76 2090 CLK2 O BU2090 CONTROL CLOCK2 (VIDEO)

9

AVR-1804/884 / AVC-1880

10

Pin
No.

Pin Name FunctionI/O

77 PWR DOWN IIPOWER DOWN DETECT
78 RDS CLK OOTDA7330 CONTROL CLOCK
79 RDS DATA O TDA7330 CONTROL DATA
80 MUTE PWR

MUTE power ON/OFF switching
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
86 GND
87 GND
88 V

SS

89 V

DD

90 NC

REMOTE CONTROL SIGNAL INPUT

-

-

-

-

VDD BACK UP

-

91 TC9482 CE O TC9482 CONTROL
92 PLL DATA O PLL CONTROL (LC72131), DATA (TC9482, TC9184, KIC9459)
93 PLL CLK O
94 PLL DT IN O

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

PLL CONTROL (LC72131),
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

M29W800AT (IC805)

M29W800T
M29W800T

48

37
36

25

1

A15 A16
A14 BYTE
A13 V
A12 DQ15A-1
A11 DQ7
A10 DQ14

A9 DQ6

A8 DQ13
NC DQ5
NC DQ12

W DQ4

12

RP V

13

NC DQ11
NC DQ3

RB DQ10

A18 DQ2
A17 DQ9

A7 DQ1

A6 DQ8

A5 DQ0

A4 G

A3 V

A2 E

A1 A0

24

IS61LV6416 (IC806)

1

A15
A14

2

A13

3

A12

4

A11

5

CE

6

I/O0

7

I/O1

8

I/O2

9

I/O3

10

Vcc

11

GND

12

I/O4

13

I/O5

14

I/O6

15

I/O7

16

WE

17

A10

18

A9

19

A8

20

A7

21

NC

22

V

SS

19

A0-A18

W

CC

E

M29W800AT

G

15

DQ0-DQ14

DQ15A-1

BYTE

RB

RP

SS

V

ss

44

A0

43

A1

42

A2

41

OE

40

UB

39

LB

38

I/O15

37

I/O14

36

I/O13

35

I/O12
GND

34

Vcc

33

I/O11

32
31

I/O10

30

I/O9

29

I/O8

28

NC

27

A3

26

A4

25

A5

24

A6

23

NC

A0-A15

VCC
GND

I/O0-I/O7

Lower Byte

I/O8-I/O15

Upper Byte

CE
OE

WE

UB

LB

DECODER

I/O

DATA

CIRCUIT

CONTROL

CIRCUIT

64K x 16

MEMORY ARRAY

COLUMN I/O

Symbol

A0-A18

DQ0-DQ7

DQ8-DQ14

DQ15A-1

E

G

W

RP

CC

SS

PIN DESCRIPTION

Symbol

A0-A15

I/O0-I/O15

CE

OE

WE

LB

UB

V

CC

Address Inputs

Data Input/Outputs, Command Inputs

Data Input/Outputs

Data Input/Output or Address Input

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

Pin Name

Pin Name

Address inputs

Data Inputs/Outputs

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

CC

PIN DESCRIPTION

10

MELODY32 (IC804)

AVR-1804/884 / AVC-1880

11

MELODY32 Terminal Function

Pin

Pin Name

No.

1 D14
2 D15
3 HAD0
4 HAD1
5 GND
6 HAD2
7 HAD3
8 HAD4

9 HAD5
10 HAD6
11 HAD7
12 HAD8
13 V

DDEXT

14 HAD9
15 HAD10
16 GND
17 HAD11
18 HAD12
19 V

DDINT

20 HAD13
21 HAD14
22 HAD15
23 HA16
24 HACK_P

Pin

Pin Name

No.

25 V

DDEXT

26 HACK
27 HCMS
28 HCIOMS
29 GND
30 HALE
31 HRD
32 HWR
33 GND
34 PF0
35 PF1
36 PF2
37 PF3
38 PF4
39 PF5
40 V

DDEXT

41 PF6
42 PF7
43 TMR0
44 TMR1
45 TMR2
46 DT2
47 TCLK2
48 TFS2

144

1

36

37

Pin

Pin Name

No.

49 DR2
50 RCLK2
51 RFS2
52 RXD
53 TXD
54 GND
55 GND
56 DT0
57 TCLK0
58 V

DDINT

59 TF50
60 DR0
61 RCLK0
62 RFS0
63 V

DDEXT

64 DT1
65 TCLK1
66 TFS1
67 DR1
68 RCLK1
69 RFS1
70 BMODE0
71 BMODE1
72 BYPASS

TOP VIEW

Pin

No.

73 RESET
74 TDO
75 TDI
76 TMS
77 GND
78 TCK
79 TRST
80 GND
81 EMU
82 V
83 OPMODE
84 A0
85 A1
86 A2
87 A3
88 A4
89 A5
90 V
91 A6
92 A7
93 A8
94 GND
95 A9
96 A10

Pin Name

DDINT

DDEXT

109

108

73

72

Pin
No.

97 A11
98 A12

99 A13
100 V
101 A14
102 A15
103 A16
104 A17
105 GND
106 A18
107 A19
108 A20
109 A21
110 BGH
111 BG
112 BR
113 BMS
114 IOMS
115 MS0
116 MS1
117 MS2
118 V
119 MS3
120 ACK

Pin Name

DDEXT

DDEXT

Pin
No.

Pin Name

121 WR
122 RD
123 D0
124 D1
125 D2
126 D3
127 V

DDINT

128 D4
129 GND
130 CLKOUT
131 V

DDEXT

132 CLKIN
133 XTAL
134 GND
135 D5
136 D6
137 D7
138 D8
139 D9
140 D10
141 D11
142 D12
143 V

DDEXT

144 D13

11

AD1837 (IC808)

DVDD

CLATCH

CIN

PD/RST

AGND

NC

OUTL1

NC

OUTR1

AGND

AVDD

NC

OUTL2

DGND

CCLK

COUT

ASDATA

ODVDD

MCLK

ALRCLK

ABCLK

ADCLP

ADCLN

DSDATA4

ADCRN

50 494847 46 45 44 43 42 41 40

51

52

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15 16 17 18 19 20 21 22 23 24 25 26

NC

OUTR2

AGND

FILTD

TOP VIEW

AVDD

FILTR

DSDATA3

DSDATA2

AGND

ADCRP

DGND

DSDATA1

NC

OUTL3

AVR-1804/884 / AVC-1880

DVDD

39

38

DBCLK

37

DLRCLK

M/S

36

AGND

35

34

OUTR4

33

NC

32

OUTL4

31

NC

30

AGND

29

AVDD

28

OUTR3

NC

27

12

MCLKASDATAABCLKALRCLKODVDDDVDD DVDD

PD/RST M/S AVDD AVDD

CLOCK

DIGITAL
FILTER

DIGITAL
FILTER

DIGITAL
FILTER

DIGITAL
FILTER

DescriptionPin No.

V

Σ-∆

DAC

Σ-∆

DAC

Σ-∆

DAC

Σ-∆

DAC

REF

OUTL1

OUTR1
OUTL2

OUTR2
OUTL3

OUTR3
OUTL4

OUTR4
FILTD
FILTR

DLRCLK

DBCLK

DSDATA1

DSDATA2

DSDATA3

DSDATA4

ADCLP

ADCLN

ADCRP

ADCRN

AD1837 Terminal Function

Pin Name

Σ-∆

ADC

Σ-∆

ADC

AD1837

Input/

Output

SERIAL DATA

I/O PORT

DIGITAL
FILTER

DIGITAL
FILTER

CINCLATCHCCLK COUT

CONTROL PORT

VOLUME

VOLUME

VOLUME

VOLUME

VOLUME

VOLUME

VOLUME

VOLUME

DGND AGND AGND AGND AGNDDGND

1,39 DVDD Digital Power Supply. Connect to digital 5V supply.
2 CLATCH I Latch Input for Control Data
33 CIN I Serial Control Input
4 PD/RST I Power-Down/Reset
5,10,16,24,30,35 AGND Analog Ground
6,12,25,31 NC Not connected
7,13,26,32 OUTLx O DACx Left Channel Output
8,14,27,33 NC Not connected
9,15,28,34 OUTRx O DACx Right Channel Output
11,19,29 AVDD Analog Power Supply. Connect to analog 5V supply.
17 FILTD Filter Capacitor Connection. Recommend 10µF/100nF.
18 FILTR Reference Filter Capacitor Connection. Recommended 10µF/100nF.
20 ADCLN I ADC Left Channel Negative Input
21 ADCLP I ADC Left Channel Positive Input
22 ADCRN I ADC Right Channel Negative Input
23 ADCRP I ADC Right Channel Positive Input
36 M/S I ADC Master/Slave Select
37 DLRCLK I/O DAC LR Clock
38 DBCLK I/O DAC Bit Clock
40,52 DGND Digital Ground
41-44 DSDATAx I DACx Input Data (Left and Right Supply)
45 ABCLK I/O ADC Bit Clock
46 ALRCLK I/O ADC LR Clock
47 MCLK I Master Clock Input
48 ADVDD Digital Output Driver Power Supply
49 ASDATA O ADC Serial Data Output
50 COUT O Output for Control Data
51 CCLK I Control Clock Input for Control Data

12

LC89057W (IC807)

AVR-1804/884 / AVC-1880

13

RXOUT

RX0
RX1
RX2
RX3
RX4

RX5/VI

RX6/UI

LPF

TMCK/PIO0

TBCK/PIO1

TLRCK/PIO2

TDATA/PIO3

TXO/PIOEN

1

2
3
4
5
8
9

10

13

44
45
46
47

48

EMPHA/UO33AUDIO/VO35INT40CL39CE38DI

32

Microcontroller

Clock

27

Input

Selector

Modulation

or

Parallel Port

29

XIN

C bit, U bit

Demodulation

&

Lock Detect

PLL

28

XOUT

Selector

XMCK34CKST

I/F

Data

Selector

I/N

XMODE
41

37

36

21

24

16
17
20
22
23

DO

RERR

RD ATA

SDIN

RMCK
RBCK
RLRCK
SBCK
SLRCK

36 RERR1RXOUT

35 INT2RX0

34 CKST3RX1

TOP VIEW

33 AUDIO/VO4RX2

32 EMPHA/UO5RX3

31 DGND6DGND

30 DVDD7DVDD

29 XIN8RX4

28 XOUT9RX5/VI

27 XMCK10RX6/UI

26 DVDD11DVDD

25 DGND12DGND

24 SDIN37DO
23 SLRCK38DI
22 SBCK39CE
21 RDATA40CL
20 RLRCK41XMODE
19 DVDD42DGND
18 DGND43DVDD
17 RBCK44TMCK/PIO0
16 RMCK45TBCK/PIO1
15 AGND46TLRCK/PIO2
14 AVDD47TDATA/PIO3
13 LPF48TXO/PIOEN

LC89057W Terminal Function

Pin

No.

1 RXOUT O Input bi-phase select data output terminal

2 RX0 I5 TTL compatible digital data input terminal

3 RX1 I Coaxial compatible amp built-in digital data input terminal

4 RX2 I5 TTL compatible digital data input terminal

5 RX3 I5 TTL compatible digital data input terminal

6 DGND — Digital GND

7 DVDD — Digital power

8 RX4 I5 TTL compatible digital data input terminal

9 RX5/VI I5 TTL compatible digital data/Validity flag input terminal for modulation

10 RX6/UI I5 TTL compatible digital data/User data input terminal for modulation

11 DVDD — Digital power for PLL

12 DGND — Digital GND for PLL

13 LPF O PLL loop filter connecting terminal

14 AVDD — Analog power for PLL

15 AGND — Analog GND for PLL

16 RMCK O RMCK clock output terminal (256fs, 512fs, XIN, VCO)

17 RBCK O/I RBCK clock in/output terminal (64fs)

18 DGND — Digital GND

19 DVDD — Digital power

20 RLRCK O/I RLRCK clock in/output terminal (fs)

21 RDATA O Serial audio data output terminal

22 SBCK O SBCK clock output terminal (32fs, 64fs, 128fs)

23 SLRCK O SLRCK clock output terminal (fs/2, fs, 2fs)

24 SDIN I5 Serial audio data input terminal

25 DGND — Digital GND

26 DVDD — Digital power

27 XMCK O Osc. amp output terminal

Pin Name

I/O

Function

13

AVR-1804/884 / AVC-1880

14

Pin
No.

Pin Name I/O

Function

28 XOUT O X’tal osc. connecting output terminal

29 XIN I X’tal osc. connection, external clock input terminal (24.576MHz or 12.288MHz)

30 DVDD — Digital power

31 DGND — Digital GND

32 EMPHA/UO I/O Emphasis information/U-data output/Chip address setting terminal

33 AUDIO/VO I/O Non-PCM detect/V-flag output/ Chip address setting terminal

34 CKST I/O Clock switch transition period output/Demodulation master or slave function switching terminal

35 INT I/O Interrupt output for µcom (Interrupt factor selectable)/Modulation or general I/O switching terminal

36 RERR O PLL lock error, data error flag output

37 DO O µcom I/F, read out data output terminal (3-state)

38 DI I5 µcom I/F, write data input terminal

39 CE I5 µcom I/F, chip enable input terminal

40 CL I5 µcom I/F, clock input terminal

41 XMODE I5 System reset input terminal

42 DGND — Digital GND

43 DVDD — Digital power

44 TMCK/PIO0 I/O 256fs system clock input for modulation/General I/O in/output terminal

45 TBCK/PIO1 I/O 64fs bit clock input for modulation/General I/O in/output terminal

46 TLRCK/PIO2 I/O fs clock input for modulation/General I/O in/output terminal

47 TDATA/PIO3 I/O Serial audio data input for modulation/General I/O in/output terminal

48 TXO/PIOEN O/I Modulation data output/ General I/O enable input terminal

* For latch-up countermeasure, perform each power supply ON/OFF in the same timing.

LC72131 (IC401)

1

XIN

CE

2

3

DI

4

CL

DO

5

BO1

6

BO2

7

BO3

8

BO4

9

IO1

10

LA1266 (IC402)

AM-IF FM-IF FM-IN

11

13

18

AM-IN

20

21

REG

BUFFER

RF MIX

22

124

XOUT

20

Vss

19

AOUT

18

AIN

17

PD

16

VDD

15

FMIN

14

12 13

10

IF

IF

BUFFER

OSC

23

2

1

FM - IF

AM-IF DET

OSC

NARROW

BUFFER

S-METER

GND

24

14

4

3

5

6

7

Vcc

POST

AGC

19

Q.D.

S-METER

17

AMP

16

LED

DRIVER

12

9

15

8

LA3401 (IC403)

22

VOL

OSC

REG

SYMMETRICAL
REOCTANCE
CIRCUIT

21

FF

AMIN

13

IO2

12

IFIN

11

MUTING

FM AM CHANGE

20

PHASE
COMPARATOR

FF

38kHzFF38kHz 90°

DECODER

Ro

FF

19



18

VCO STOP

Rc

Rc

16

17

PILOT DET

FF

19kHz 90°

MUTING CONTROL

FM AM CHANGE OVER

Rb

Rb

15

Vcc ON
MUTING

14

13

LAMP
DRIVER

TRIGGER

STEREO
SWITCH

MUTING
OUTPUT

12

2

1

4

3

6

5

8

7

9

11

10

14

AVR-1804/884 / AVC-1880

15

LC75721E (IC301)

G7 G8G9

G10

G11

48 33

49

DI
CL
CE

RES

DD

V

OSCI

OSCO

Vss

TEST

FL

V

G1
G2
G3
G4
G5
G6

64

AM 1

AM 2

AM 3

AM 4

AM 5

MM74LCX244 (IC809~811)

LC75721E Terminal Function



AA8/G12

AA7/G13

AA6/G14

AA5/G15

AA4/G16

AA3

AA2

AA1

AM35

AM34

AM33

32

AM 17
AM 18
AM 19
AM 20
AM 21
AM 22
AM 23
AM 24
AM 25
AM 26
AM 27
AM 28
AM 29
AM 30
AM 31
AM 32

17

161

AM 6

AM 7

AM 8

AM 9

AM 10

AM 11

AM 12

AM 13

AM 14

AM 15

AM 16

Symbol

V

DD

V

SS

V

FL

DI
CL
CE

OSCI
OSCO

RES
AM1~AM35

AA1~AA3
AA4/G16

AA5/G15
AA6/G14
AA7/G13
AA8/G12

G1~G11
TEST

Power terminal +5V
Power terminal GND
Power terminal FL drive
Serial data transfer terminal
DI: Data

CL: Clock
CE: Chip enable

External CR connecting terminal

System reset terminal

Anode output terminal

Anode/Grid output terminal

Grid output terminal
LSI test terminal

Function

TOP VIEW

1

OE

2

I0

3

O4

4

I1

5

O5

6

I2

7

O6

8

I3

912

O7 O3

10 11

GND

20

VCC

19

OE2

18

O0

17

I4

16

O1

15

I5

14

O2

13

I6

I7

BU2090F (IC302, 1003, 1005)

VSS

DATA

CLOCK

LCK

1

CONTROL CIRCUIT

2

12-bi t SHIFT REGI STER

3

4

5

6

7

8

9

12- bi t ST RAGE REGI STER

OUTPUT BUFFER (OPEN DRAIN)

Q0

Q1

Q2

Q4

18

VDD

OE

17

16

Q11

Q10

15

Q9

14

Q8

13

12

Q7

Q6

11Q3

Q5

10

TC9274N-011 (IC701)

S1S2S3S4S5S6S7S8S9

41

40

VDD

42

V

SS

1

2

345678 9 10 111213 14

S1S2S3S4S5S6S7S8S9

36

3839

37

35

18 bit Latch Circuit (Rch)

TC9273N-004 (IC702)

Vss

1

S1

2

S2

3

4

S3

S4

5

6

S5

7

S6

S7

8

9

S8

10

S9

11

S10

12

S10

V

DD

28

S1

27

S2

26

25

S3

S4

24

23

S5

22

S6

S7

21

20

S8

19

S9

18

17

S10

32

34

33

(Lch) Same as Rch

S10

TC9273N Terminal Function

S11

S12

S13

S14

29

28

3031

15

S11

S12

S13

Symbol Name

Pin No

1

13

28

2~12

S1~S10

12~27

14

15

16

S15

S16

26

25

27

16 171819

S14

S15

S16

Vss

GND

V

DD

CK

DATA

STB

S17

S18

24

23

STB

22

DATA

21

CK

Level Shift + Shift Register Circuit

20

GND

S17

S18

+Power Terminal

Digital Ground

+Power Terminal

I/O Terminal

Clock Input

Data Input

Function

Dual Power Use:VDD = 8.0~17 V Single Power Use:VDD = 8.0~18V

GND=0V

GND=0V

Vss=-8.0~-17V

Input terminal of analog switch.

Clock input for data transfer.

Serial input for switch setting.

Strobe InputStrobe input for data writing.Strobe Input

Low level

Border Input

Terminal

13

GND

14

CK

STB

DATA

16

15

15

BU4052BCF
(IC601D,602D)

Y

0

1

Y

2

2

Y

2

INH

V

Vss

YOUT

3

/IN

Y

3

4

Y3

5

Y

1

1

Y

6

INH

7

EE

EE

V

8

COMMON Y

Y

0

XOUT

B

AVR-1804/884 / AVC-1880

16

Truth Table

V

DD

16

X

2

15

X

2

14

X

1

X

1

13

COMMON X

/IN

X

0

0

X

12

X

3

11

3

X

10

A

A

9

B

INH B ON SwitchesA

L
L
L
L
H

X

0

Y

L

L
L

H

HL
HH

X1 Y
X2 Y
X3 Y

0

1

2

3

X NONEX

X = Don’t Care

MM74HC4053MX (IC1001, 1004, 1008)

Truth Table

Y1
Y0
Z1

Z0

Enable

EE

V

GND

1

2

3

4

Z

5

6

7

8

16

Vcc

15

Y

14

X1

13

X

12

X0

11

C

10

A

9

B

Control Inputs

Select

Enable C B A

L L L L Z0 Y0 X0
L L L H Z0 Y0 X1
L L H L Z0 Y1 X0
L L H H Z0 Y1 X1
L H L L Z1 Y0 X0
L H L H Z1 Y0 X1
L H H L Z1 Y1 X0
L H H H Z1 Y1 X1

H X X X None

BA7625 (IC605D)
BA7626 (IC603D,604D,651-654,
1000,1002)

Monitor OUT

GND

IN5

GND

IN4

CTL E

IN3

7

CTL D

8

Note 1: * mark means that

feasible for either H or L.

Note 2: Each input terminal is

provided with sink chip
clamp (BA7625).
Each input terminal takes
20kohm at the end (BA7626).

LOGIC

6dB

LOGIC

6dB

16

15

14

13

12

11

10

9

IN1

CTL A

V OUT1

Vcc

IN2

CTL B

V OUT2

CTL C

ABE

LL* IN 1

HL * IN 2

LH* IN 3

HHL IN 4

HHH IN 5

C D E V OUT 1

LL*

HL * IN 2

LH* IN 3

HHL IN 4

HHH IN 5

C D E V OUT 2

LL* IN 1

HL *

LH* IN 3

HHL IN 4

HHH IN 5

ONSwitches

X = Don’t Care

MONIT OR OUT

KIC9459F (IC706)

NC

L-OUT

L-IN

L-LD1

L-LD2

L-A-GND

NC

CS1

NC

GND

CK

3

2

4

5

6

7

8

9

10

11

12

50kohm/
91STEP

VR

V

SS

1

L-ch7 to 91decoder

L-ch latch circuit

Shift register (24Bit)

Level shift circuit

V

DD

24

Same

R-ch7 to 91decoder

R-ch latch circuit

as L-ch

22

NC

R-OUT

23

R-IN

21

R-LD1

20

19

R-LD2

18

R-A-GND

17

NC

16

CS2

15

NC

14

STB

13

DATA

TC9184AP (IC552)

Vss

VDD

1

2

BASS+

3

BASS-



COM

TREBLE-

TREBLE+

Ladder resister

4

5

6

Ladder resister

Analog switch

Analog switch

78

13 bit latch circuit

13 bit latch circuit

GNDCKDATA

16



9

Level shift

20 bit Shift register circuit

Code
detect
circuit

STB

10

15

BASS+

Analog switch

Analog switch

14

Ladder resister

BASS-

13

COM

12

TREBLE-

11

Ladder resister

TREBLE+

16

MM74HCT244 (IC812)

1G

1A
2Y
1A
2Y
1A
2Y
1A
2Y

GND

0

0

1

1

2

2

3

3

20 1
19 2
18 3
17 4
16 5
15 6

14 7
13 8
12 9
11 10

CC

V

2G

0

1Y

0

2A

1

1Y

1

2A

2

1Y

2

2A

3

1Y

3

2A

LC74781 (IC1006)

PinNo. Symbol Name

1VSS1GND

2 XtalIN Xtaloscillation

3 XtalOUT Xtaloscillation

4 CTRL1 Xtaloscillationinputswitching

5BLANKBlankoutput

6 OSCIN LCoscillation

7 OSCOUT LCoscillation

8 CHARA Characteroutput

9 CS Enableinput

10 SCLK Clockinput

11 SIN Datainput

12 VDD2 Power

13 CVOUT VIDEOsignaloutput

14 NC

15 CVIN VIDEOsignalinput

16 VDD1 Power

17 SYNIN Sync.separatecircuitinput

18 SEPC Sync.separatecircuitbiasvoltage

19 SEPOUT Complexsync.signaloutput

20 SEPIN Verticalsync.signalinput

21 CTRL2 NTSC/PAL-Mswitchinginput

22 CTRL3 SEPINinputcontrol

23 RST Resetinput

24 VDD1 Power(+5V)

AVR-1804/884 / AVC-1880

17

SCLK

VDD1

VSS1

VDD2

CHARA

OSCIN

OSCOUT

SYNIN

SEPC

SEPOUT

SEPIN

CTRL3

SIN

RST

9

CS

Serial

11

parallel

converter

10

23

24

1

12

8

Horizontal

6

character

7

17

18

19

20

22

size

register

Horizontal

character

size

register

8-bits

latch

+

command

decoder

Horizontal

character

size

register

Horizontal

character

size

register

Horizontal
character

size

register

Horizontal

size

counter

Vertical

character

size

register

Vertical

size

counter

Timing generator

4

CTRL1

Horizontal

display
position
register

Horizontal

dot

counter

Blinking

and inversion

control

register

Character

control

counter

Vertical

display
position
register

Vertical

dot

counter

Blinking

and inversion

control
register

Line

control
counter

Synchronization
signal generator

21 2 3 5 15 13

XtalIN XtalOUT BLANK CVIN CVOUTCTRL2

Blinking

and inversion

control

register

Blinking

and inversion

control

circuit

Character output control

Background control

Video output control

Display

control

register

RAM

write

adress

counter

Decoder

Display

RAM

Decoder

Font
RAM

Shift

register

17

e

NJM2274
(IC1007)

Yin

1

GND

2

Vout

3
4

Vsag

8

Cin
Cmute

7
6

Power Sav
Vcc

5

AVR-1804/884 / AVC-1880

18

TRANSISTORS



DTA114ES
DTA114YS
DTA114ES
DTC114TS
DTC114YS
DTC144ES

FRONT

VIEW

C

B

E

DTA114EK
DTA144EK
DTC144EK
DTC114TK
DTC114YK
DTC144EK

B

TOP

VIEW

E

DTA Series

C

R1

B

R2

R1

E

R2

10kohm

47kohm

C

DTA114EK

DTA114ES
DTA114YS

DTA144EK

DTA144ES

10kohm

10kohm 10kohm
10kohm
47kohm 47kohm

47kohm 47kohm

DTC Series

R1

B

DTC114EK
DTC114TK

DTC114TS

DTC114YK
DTC114YS

DTC144EK

DTC144ES

10kohm 10kohm
10kohm

10 -

10kohm 47kohm
10kohm 47kohm
47kohm 47kohm

47kohm 47kohm

R2

R1

kohm

C

E

R2

-

18

FL DISPLAY

16-ST-66GNK (FL301)

AVR-1804/884 / AVC-1880

19

1

TUNED

STEREO

RDS

CH

G16

TUNED

RDS

CH

G15 G13

STEREO

AUTO

Pin Assignment

AUTO

G14

REC

ZONE2

REC

ZONE2

PHONO

VCR

G12

PHONO

VCR

G11

CD

-

1

G10

CD

-

TUNER

-2-

TUNER

-2-

1

AUX

3 V.AUX

G9

3

G8

DVD /
CDR

G7

AUX

V.AUX

VDP TV

TAPE

/

G6

DVD /
CDR

G5

/

-1-

G4

VDP

TAPE

/

2

DBS

DIGITAL

G3

TV

-1-

PRO LOGICII
DIGITAL

ANALOG

G2

DBS

/

2

DIGITAL

58

G1

PRO LOGICII
DIGITAL

ANALOG

S38

S13

S1

S6

S11

S16

S21

S26

S31

S14

S2

S7

S12

S17

S22

S27

S32

G1

S9

S10

S15

S11

S12

G2~G16

S3

S8

S13

S18

S23

S28

S33

S4

S9

S14

S19

S24

S29

S34

S1

S6

S2

S7

S5

S3

S4

S5

S10

S15

S20

S25

S30

S35

PIN NO.
CONNECTION

PIN NO.
CONNECTION

PIN NO.
CONNECTION

12345

F1 F1 S1 S2 S3
21 22

23 24 25

S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38

41 42 43 44 45

G16 G15 G14 G13 G12 G11 G10 G9 G8 G7 G6 G5 G4 G3 G2 G1 F2 F2

Anode & Grid Assignment

G1

G2~G16

S1
S2

S3
S4
S5
S6
S7
S8
S9

TV

/
2

VDP

-

1

TAPE

S36
S37
S38

S1
S2
S3
S4
S5
S6
S7

S1
S2
S3
S4
S5
S6

S7
S8
S9

S9

G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15

-

S38

DBS

S10
S11

S12
S13
S14

S15

S16
S17
S18

/(DVD)

/(MD)

6

S4

26

46

G1
S10
S11

S12

S13
S14
S15

DIGITAL

PRO LOGICII

CDR

V.AUX

7 8 9 10 11 12 13 14 15 16 17 18 19

S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15
27 28 29 30 31 32 33 34

35 36 37 38 39 40

47 48 49 50 51 52 53 54 55 56 57

S16 S17

58

F1, F2 : Filament
G1~G16 : Grid
S1~S38 : Anode

G2~G16

S10
S11
S12
S13
S14
S15
S16
S17
S18

AUXDVD

S19

S20

S21
S22
S23
S24
S25
S26
S27

TUNER

-

2

-

3

CD

-

G1

G2~G16

S19
S20
S21
S22
S23
S24

S25
S26

S28
S29
S30
S31
S32
S33
S34
S35

S27

PHONO

1

VCR

REC

ZONE2

G1

STEREO

AUTO

G2~G16

20

S18

S28
S29
S30
S31

S32
S33

S34
S35

G16

TUNED

RDS

CH

19

PRINTED WIRING BOARDS

MAIN P.W.B. UNIT

AVR-1804/884 / AVC-1880

20

20

COMPONENT SIDE

AVR-1804/884 / AVC-1880

21

21

FOIL SIDE

CPU P.W.B. UNIT

RMC301

LED308

SW305B

JP334

R272

LED304

R335

R346

J353

JP335

JP325

JP328

CP601

Q203

CP391

CP701

JP324

JP341

JP318

C312

C322

Q306

R348

R337

J365

Q221

R304B

LED309

SW309C

JP330

J338

LED303

SW304B

C238

R202V

R347

JP321

CP803

R308C

R251

J370

R345

R310

R303B

J363

SW308C

JP229

JP230

CP303

LED302

LED306LED305

SW303B

J368

R343

R342

Q210

D304

JP306

JP313

CP801

R302B

J346

C240

JP315

C245

JP336

C323

LED301

LED307

SW302B

J345

J344

JP304

JP300

JP308

C214

R255

CP702

JP242

J347

Q209

R207FL

JP294

C320

R340

JP305

R207FR

R257

JP310

C248

JP299

C328

R341

5

R301B

IN OP FIADJICT

CP401

IC205

J340

C213FL

R210FL

JP326

C321

LED310

R363

LED311

R362

J354

J341

J337

J339

J348

J349

JP309

14

R210FR

C213FR

C215

8

R213FL

JP296

JP297

JP298

R307C

JP286

R213FR

R217FL

JP312

D205

JP302

SW309A

R217FR

JP235

JP285

C242

JP290

Q208

R308A

SW307C

C230

JP317

D207

JP329

D214

C228

JP287

J335

C229

C216

Q207

JP289

JP288

JP295

R350FL

R349FL

J320

R266

C231

C239

R221SW

R219SW

R351FL

FLT301

SW308A

R306C

JP332

R265

C232

IC206

5

C218FL

IC207

J343

5

CP802

R352FL

C309

JP331

JP283

C233

J342

R220SW
C211SW

R353FL

R356FL

R357FL

R355FL

R354FL

R307A

R306A

R344

C325

C319

SW306C

R238

JP282

C250

C218FR

14

C234

R214FR

C217

8

R214FL

R215FL

14

J240

R222SW

C212SW

8

JP291

JP292

JP293

R359FL

R358FL

R237

R216FL

C219FL

JP281

R224SW

C213

R360FL

R361FL

SW307A

R361

IC302

R305C

R215FR

C219FR

R216FR

JP333

R223SW

C219SW

JP262

R363FL

R362FL

J334

J360

R245SR

R236

IC204

R245SL

C223SL

JP261

R364FL

R365FL

Q301

Q302

SW305C

JP279

C230C

C270

C220

R367FL

R366FL

J331

SW305A

JP278

JP259

C241

R368FL

R369FL

R370FL

R373FL

R372FL

R371FL

R374FL

Q300

D305

Q303

D306

SW306A

R304C

JP277

JP269

R245C

C223SR

JP268

R245FL

C222SW

C221FL

R245SW

28 25 20 15

JP256

JP257

JP258

JP254

JP255

JP260

R230

R229

R375FL

R305A

R245FR

JP276

IC203

JP253

JP252

R380FL

R381FL

R378FL

R376FL
R377FLR379FL

R304A

SW304A

C221FR

JP267

JP266

J324

R227

R258

JP251

JP250

R382FL

R384FL

R383FL

R303A

J359

JP264

JP265

141051

JP246

JP249

CP603

R386FL

R385FL

IC301

R352

CP555

JP263

C247

R231

JP248

{Value}

R388FL

R387FL

D307

C308

SW303A

C324

CP402

R228

JP244

R271

R270

R269

R390FL

R389FL

R391FL

CP705

R268

R392FL

Q304

R267

R260

R393FL

J315

R336

R207

R395FL

R394FL

J317

J316

R302A

J319

C327

JP314

JP316

R233

J325

CB203

R397FL

R396FL

R398FL

Q305

SW302A

R338

OPTION1

R232

C221

C249

JP273

JP247

R400FL

R399FL

C326

OPTION

JP270

R401FL

JP271

R402FL

R301A

JP231

IC201

JP272

ZD301

SW301A

C227

JP226

J274

J275

R349

J329

R350

CN604

C246

JP220

J327

C305

C306

C307

R351

JP307

J328

R314

R221

J362

JP322

JP327

JP323

JP275

JP284

R222

J330

JP311

J361

R316

R317

R318

R319

R313

JP339

JP303

C315

JP221

R213

JP233

C318

C317

JP222

JP217

R210

R214

C314

JP219

JP238

CB202

C205

JP216

R218

JP232

Q202

R206

R356

L301

X201

R216

R353

JP223

R209

CP301

JP215

R219

R217

R212

R208

R204

Q218

J357

R264

R263

C204

D204

GND01

R261

D213

R220

R407

R205

D303

D302

C316

L302

R303C

JP224

D201

R355

C310

D209

J372

Q201

C203

Q307

R354

R303

R304

JP234

R201

R202

ZD201

J305

J332

J333

J336

J364

SW303C

SW304C

CP551

R211

JP211

JP280

D202

C202

BC201

J302

R353H

J351

JP212

J301

C201E

C202E

JP319

R302

R306

R308

R307

ZD305

CP552

ZD304

JP225

{Value}

R301

C302

R305

JP237

JP227

R250

JP218

JP236

CP605

C237

JP352

R201V

R253

JP351

Q217

JP214

JP210

VEC301

C301

J352

C303

VEC302

JP228

Q216

Q204

R252

JP320

R223

JP209

J304

CP606

C209

JP274

JP213

J350

CP302

R262

JP240

D206

C210

CN303

ZD302

ZD303

C304

X202

C206

C207

C208

C211

R302C

R301C

C212

IC202

AVR-1804/884 / AVC-1880

CN606

L301O

C301O

C302O

C303O

SW301C

SW302C

C334

CN610

R359

R360

C333

R225

R224

22

22

COMPONENT SIDE

C303O

OUT

GND

VCC

21-VKK

19-GND

20-GND

22-+5.6V

17-FUNC_DW

16-FUNC_UP

14-FL_RST

13-RLY_PWR

15-REMOCON

12-STBY_LED

18-H/P_SENSE

202322

8-2090_DATA

7-VOL_DW

10-FL_DATA

11-FL_CE

9-FL_CLK

12 246810

14

1618

151719

13

5-SEL_DW

4-SEL_UP

6-VOL_UP

3-KEY3

11

1-KEY1

2-KEY2

AVR-1804/884 / AVC-1880

R360FL

R363FL

R364FL

Q301

R362FL

R361FL

R359FL

R382FL

R380FL

R387FL

R386FL

45

R385FL

R384FL

IC301

40

R381FL

R383FL

35

R378FL

R390FL

R389FL

R393FL

R392FL

R391FL

R388FL

R397FL

R396FL

R395FL

R399FL

R398FL

R394FL

R402FL

R401FL

Q307

9

57

R355

13

R356

R400FL

R353

LC75721NE

50

D307

55

60

C308

C305

Q305

Q304

R352

1

R376FL
R377FLR379FL

30

25

5

10

R373FL

R375FL

R374FL

20

15

R372FL

R371FL

Q300

D305

D306

R369FL

R370FL

Q303

R367FL

R368FL

R365FL

R366FL

Q302

C306

R302A

R304A

R357FL

R358FL

R356FL

R355FL

R353FL

R354FL

R351FL

R352FL

R350FL

R349FL

R363

R362

C328

R301B

R341

R340

R302B

R343

R342

R310

R345

R303B

R337

C312

Q306

Q203

R346

23

C307

R344

C325

8

1

5

R361

IC302

SCREW 3*17

SCREW 3*17

BU2090F

9

C309

10

15

R347

R348

JACK301

R359

JACK301

GND

VCC

R359

R360

R360

OUT

C303O

R225

10

11

R224

1-SW_MUTE
2-MUTE_+B
3-RLY_S_SB
4-RLY_S_A
5-RLY_SURR
6-RLY_CNT
7-RLY_H/P
8-RLY_POWER
9-CNT_MUTE
10-FRNT_MUT
11-SUR_MUT
12-+5.6V
13-CPU_G
14-+5V(DSP)
15-DSP_G
16-PWR_DW
17-PROTECT
18-VKK
19-MUTE_PWR

C211

C212

IC202

9184_CE

RLY_SPK_B

PRE_RET_GND

R262

C210

1

20

D206

SB_MUTE

TONE_DFT

9184_CLK
9184_DAT

+15V

-15V

Q204

R252

R223

R201V

R253

11

12

13

14

15
16
17
18
19

R336

R349

R351

R350

1
2
3
4
5
6
7
8
9

1
2
3
4

5
6
7
8

9

10

FL_DRV_CE
FL_DRV_DATA
FL/2090_CLK

R211

R201

R202

C202

+5.6V

-VKK
GND
GND

H/P_SENSE

FUNC_DW
FUNC_UP

REMOCON

FL_RST

RLY_PWR

STBY_LED

2090_DATA

VOL_DW

VOL_UP

SEL_DW

SEL_UP

KEY3
KEY2
KEY1

J372

Q201

D209

C203

R261

R220

R407

R205

R264

R263

R219

R217

R208

R216

Q202

R218

30

35

40

45

50

55

60

65

70

25

20

75

85

81

80

R206

R338

+15V

-15V

SW

GND

SB

312

4

659107

8

1-SL

3-SR

5-C

6-GND

4-GND

2-GND

9459_STB8

MULTI_SB_RLY

GND

MULTI_SBOUT

9459_CLK

9459_DATA

4

7

IC201

10

5

1

100

C249

95

90

R267

J325

C

GNDFRGNDFLGND

121314

11

7-SW

9-FL

8-GND

DSP_SB_OUT

GND

12365

R268

1

11-FR

10-GND

R271

R270

GNDSLGND

R269

SR
15

CP555

C247

25

20

R245SR
15

GND

C

TC9482

IC204

R245SL

R215FR

R216FR

R223SW

98765

SW

GND

ARE_OPT

E3

E2,EK

N
E1

10

GND

R237

R216FL

R224SW

C213

FL

GND

FR

R216

10K
10K
15K

OPEN

C218FR

GND

C234

R214FR

C217

R215FL

R222SW

C212SW

GND

ANAL_L

R218

OPEN

18K
10K
10K

1

C250

C233

J342

R214FL

R220SW
C211SW

+15V

ANAL_R

2

191817161514131211

-15V

R265

3

C232

C218FL

J343

C239

R266

13
4

5

6

C231

C229

C216

R221SW

7

C228

8

C230

9

C242

D207

10

11

12

R217FR

D205

HPF_R

DSP_+5V

1

14

15

16

13

R210FR

C213FR

R213FR

C215

R217FL

GND

GND

GND

HPF_L

ANA_R

1234567

1837_CE

89057/1837_SDOUT

DSP_GND

1837_RST

89057/1837_SCLK

5

2

J340

C213FL

R210FL

GND

ANAL_L

8

M32_CLK

89057_CE

M32_SDOUT

7

98643

GND

AD_L

9

10

M32_CS

C248

10

C214

R255

AD_R

11

M32_RST

89057_RST

EPROM_RST

11

121314

2-PLL_CE

1-9K/10K

3-PLL_DATA

M32_SDIN

M32_INTREQ

89057_SDIN

C245

16

15

5-PLL_DOUT

7-ST

4-PLL_CLK

6-TU_MUTE

TUNER_R

TUNER_L

GND

GND

1

234

89_INT

89_AUDIO

89_EMPHA

123

213

9-+15

8-TUNED

11-GND

13-NC

12-DET_OUT

R251

V.AUX_L

GND

GND

V.AUX_R

5

678

GND

ERR_MUT

ERR_MU_OFF

GND

567

4

567

4

15-GND

16-TUNER_R

19-TUNER_L

18-GND

MULTI_MUTE

+15V

-15V

9

121314

11

10

FRO_OPT_IN
8

8

+5V

GND

2090 _CLK

REM_DATA

TONE_DFT

9

84567

10

15

Y_SIG

C_SIG

V.AUX_VIN

VIDEO_GND

2090_781_DATA

321

TC9273_CE

TC9274_73_CLK

TC9274_73_DATA

TC9274_STB

121314

15

R245FR

5

R245C

R245FL

10

1

R245SW

J324

2

3

4

1

SL

SB

SR

GND

GND

10K
10K
15K

OPEN

R219R217

OPEN

18K
10K
10K

SET_OPT

AVC1570
1603RDS

74781_SCLK

74781_CS

2090_CLK2

SVIDEO_DET

SMON_DET

AVR1803
1803RDS

CVIDEO_DET

65432

23

FOIL SIDE

CNT P.W.B. UNIT ( FOR U.S.A., CANADA, EUROPE, U.K., ASIA, CHINA, TAIWAN R.O.C. & KOREA MODELS )

AVR-1804/884 / AVC-1880

24

24

COMPONENT SIDE

AVR-1804/884 / AVC-1880

25

25

FOIL SIDE