Denon AVR-1404 Bedienungsanleitung

SERVICE MANUAL

AV SURROUND RECEIVER

MODEL AVR-1404/484

For U.S.A., Canada, Europe,

Asia, China, Taiwan R.O.C.

& Korea model

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

X0172V.01 DE/CDM 0306

Some illustrations using in this service manual are

slightly different from the actual set.

●

Please use this service manual with referring to the

operating instructions without fail.

●

For purposes of improvement, specifications and

design are subject to change without notice.

●

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。

●

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。

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。

●

補修用性能部品の保有期間は、製造打切後8年です。

注意

Ver. 1

2AVR-1404/484

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)

3AVR-1404/484

DISASSEMBLY

(Follow the procedure below in reverse order when reassembling.)

1. Top Cover

(1) Remove 6 screws ①and 3 screws ②, detach the Top cover in the arrow direction.

2. Front Panel

(1) Remove 4 screws ③and 2 screws ④.

(2) Detach the Front Panel in the arrow direction.

3. Rear Panel

(1) Remove cord bushing ⑤from the Rear Panel.

(2) Remove 30 screws ⑥.

(3) Detach the Rear Panel in the arrow direction.

Top Cover

Front Panel

Rear Panel

4AVR-1404/484

LEVEL DIAGRAMS (1/2)

DIGITAL

40dB

30dB

20dB

6dB

10dB

40dB

30dB

20dB

10dB

0dB

10dB

12dB

18dB

35.5dB

15.5dB

25.5dB

15.5dB

SPK OUT

FRONT

2.83V

(1W

8ohm)

SPK OUT

FRONT

P OUT

SPK OUT

2.83V

(1W

8ohm)

SPK OUT

CENTER

SURROUND

MUTE

M62446

MUTE

DSP OUT

P OUT

47mV

(0.27W 8ohm)

20dBFS

10dBFS

0dBFS

D IN

REV AMP

D IN

REV AMP

A OUT

LPF

DSP

HPF

REV AMP PRE AMP POWER AMP

M62446 MUTE

MUTE SUM S

ATT

SW SUM

REV AMP TONE ELECTRIC

VOLUME

DIR

INPUT

BUFFER

AMP

A OUT

100mV REF

A OUT

100mV REF

30dBFS

20dBFS

10dBFS

0dBFS

30dBFS

20dB

10dB

20dB

0dB

CD IN

FRONT

CENTER

SURROUND

6CH IN

6CH IN (200mV)

6dB

20dBFS

10dBFS

0dBFS

30dBFS

VOL 00

6CH IN

CD IN

(200mV)

5AVR-1404/484

LEVEL DIAGRAMS (2/2)

30dB

20dB

10dB

0dB

18dB 25.5

(

15.5

)

SUB WOOFER

PRE OUT

150mV

SUB WOOFER

PRE OUT

M62446

MUTE MUTE

DSP OUT

A OUT

LPF REV AMP PRE AMP

SW SUM

REV AMP

ELECTRIC

VOLUME

10dB

5dB

20dB

30dB

SUB_WOOFER

6CH INPUT

6CH IN

(112mV)

6dB

5dB

TO FRONT CH

10.5dB

LFE

Front D

A Out

200mV ref

Config2

Config1

20dBFS

25dBFS

10dBFS

0dBFS

30dBFS

35dBFS

VOL 00

(200mV)

6AVR-1404/484

BLOCK DIAGRAM

7AVR-1404/484

ADJUSTMENT

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 60dBPMono

1kHz 100%

Antenna

Terminal

Digital

Voltmeter R471 T402 r50mV

2 Distortion 98.1MHz

(98.0MHz) FM SSG 98.1MHz 60dBPMono

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 20dBPOFF Antenna

Terminal

Light “TUNED” on

FL Display VR402

Tuner Section

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

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

74dBP(EMF)

8AVR-1404/484

Audio Section

Idling Current

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, VR103, VR104, VR105 on 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).

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

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

MODE : 5CH 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.

9AVR-1404/484

SEMICONDUCTORS

CXP740096 Terminal Function

Pin No. Pin Name I/O Function

1 9273 STB O TC9273 CONTROL

2 9273 9164 CLK O TC9273/TC9164 CONTROL

3 9273 9164 DAT O TC9273/TC9164 CONTROL

4 SW SUM O SW SUMMING CONTROL

5 SEL. CLK O SEL. CLK

6 ERR MUTE O ERR MUTE

7 89055 AUTO O LC89055 CONTROL

8 89055 AUDIO I LC89055 CONTROL

9 89055 EMPHA I LC89055 CONTROL

10 SRAM CE O SRAM (IC833) CONTROL

11 49326 ABOOT O CS49326 CONTROL

12 ROM 3 O ROM (IC807) CONTROL

13 ROM 30 O ROM (IC807) CONTROL

14 ROM 2 O ROM (IC807) CONTROL

15 49326 RST O CS94326 RESET

16 49326 CE O CS94326 CE

17 SCLK O LC89055/AK4527/CS49326 CLOCK

18 89055 CE O LC89055 CE

19 4527 CE O AK4527 CE

20 4527 RST O AK4527 RESET

21 9164 ST O TC9164 CONTROL

22 SW MUTE O SW MUTE

23 RELAY FRONT B O FRONT B RELAY



IC’s

CXP740096

(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

10AVR-1404/484

24 RELAY FRONT 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 RELAY POWER O POWER RELAY

29 CNT MUTE O CENTER MUTE

30 FRONT MUTE O FRONT MUTE

31 VIDEO MUTE O VIDEO MUTE

32 SURR MUTE O SURROUND MUTE

33 NC

34 FL DRV RST O LC75721NE RESET

35 NC

36 NC

37 NC

38 SW ATT CTRL O SW. ATT. CONTROL

39 CINE EQ CTRL O CINEMA EQ. CONTROL

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 AVSS

53 VREF

54 AVDD

55 NC

56 GND

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 89055 RST O LC89055 RESET

66 SDIN I LC89055/AK4527/CS49326 DATA INPUT

67 SDIO O LC89055/AK4527/CS49326 SDIO

68 ROM CE O ROM (IC807) CONTROL

69 FUNC DOWN I ENCODER INPUT (FUNCTION)

70 FUNC UP I ENCODER INPUT (FUNCTION)

71 NC

72 NC

73 NC

74 NC

75 NC

76 NC

77 PWR DOWN I POWER DOWN DETECT

78 RDS CLK I TDA7330 CONTROL CLOCK

79 RDS DATA I TDA7330 CONTROL DATA

Pin No. Pin Name I/O Function

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