Denon AVR-1705, AVR-1685 Service Manual

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SERVICE MANUAL

MODEL

TEL 13942296513 QQ 376315150 892498299

AV SURROUND RECEIVER/AMPLIFIER

AVR-1705/685

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

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China & Taiwan R.O.C. model

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Ver. 1

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For purposes of improvement, specifications and design are subject to change without notice.

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Please use this service manual with referring to the operating instructions without fail.

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Some illustrations using in this service manual are slightly different from the actual set.

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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。

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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。

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補修用性能部品の保有期間は、製造打切後8年です。

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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。

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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。

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

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X0202 V.01 DE/CDM 0406

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AVR-1705/685

SAFETY PRECAUTIONS

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

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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.

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(1)

(2)

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1M

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DIMENSION

AVR-1705/685

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AVR-1705/685

CAUTION IN SERVICING

Initializing AV SURROUND RECEIVER

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AV SURROUND RECEIVER initialization should be performed when the µcom, peripheral parts of µcom, and Digital 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 an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.

TEL 13942296513 QQ 376315150 892498299

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

Note:

・ All user settings will be lost and this factory setting will

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be recovered when this initialization mode. So make sure to memorize your setting for restoring after the initialization.

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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、Digital 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

・初期化を行うとお客様が設定した内容が工場出荷状

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らやり直してください。

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。

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AVR-1705/685

ADJUSTMENT

Audio Section

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Idling Current

Required measurement equipment: DC Voltmeter

1. Preparation

2. Adjustment

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(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) Presetting

• POWER (Power source switch) OFF

• SPEAKER (Speaker terminal) No load (Do not connect speaker, dummy resistor, etc.)

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

VR104, VR105, on Amp. Unit, VR106 on SURR.-BACK ch Amp. Unit at fully 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 clock-

wise ( ) to adjust the TEST POINT voltage to 1.5 mV ± 0.5 mV DC.

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(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.

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調整

オーディオセクション

アイドリング電流の調整

調整に必要な測定器 : DCVoltmeter

1. 準備

(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。

(2) プリセット

・電源スイッチ OFF ・スピーカ端子無負荷

2. 調整

(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 DCVoltmeter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。

・MASTERVOLUME（音量調節つまみ）→反時計方向

・SPEAKER（スピーカ端子）→無負荷（スピーカ、

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(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。

(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。

(7) 同じ方法で各チャネルの可変抵抗を調整します。

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( スピーカ・ダミー抵抗器などを接続しない。)

( )に回す、最小の状態にする。

ダミー抵抗器などを接続しない。）

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MODE:6CHSTEREO FUNCTION:CD

1.5mV ±0.5mVDC

2.5mV± 0.5mVDC

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

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DC Voltmeter

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S Back ch

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VR104

TP104

VR101,TP101

VR106

CP106

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AVR-1705/685

Video Section

Component Video Level Adjustment

Required measurement equipment etc.: Oscilloscope, DVD

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VIDEO PLAYER (ex: DVD-1500) Test disc: DVD T-S01

1. 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) us-

ing 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.

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(3) Presetting

• POWER (Power source switch) OFF

• SPEAKER (Speaker terminal) No load

• DVD (Video terminal) No input

2. Adjustment

(1) Remove top cover and set VR601, VR602, VR603, 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

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"ON".

(5) Presetting.

• FUNCTION: DVD

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

(6) Turn VR601 clockwise ( ) to adjust the COMPONENT

Video Y voltage (except H. Sync) to 714 ± 50 mVp-p. (Refer to Fig. 1)

(7) Adjust the Variable Resistors of Cr: VR602 and Cb:

VR603 in the same way. (Refer to Fig. 2, 3)

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

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

525 ± 50 mVp-p. (Others)

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ビデオセクション

コンポーネントビデオレベルの調整

調整に必要な測定器 : Oscilloscope,DVDVIDEOPLAYER

テストディスク : DVDT-S01

1. 準備

(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。

(2) DVDVIDEOPLAYER でテストディスクのカラーバー

75%(Title12) を再生し、S 端子出力 Y、C レベルが正規の出力レベルであることを確認する。正規の出力レベルでない場合は、セット内部の可変抵抗器で調整してください。

(3) プリセット

・電源スイッチ OFF ・スピーカ端子無負荷

・DVD 入力端子無入力

2. 調整

(1) 上カバーをはずし、C-SVIDEO2 ユニットの VR601,

VR602,VR603 を反時計方向 ( )に回し切った状態にセットします。

(2) コンポーネントビデオモニターアウトの Y(Cb,Cr) に

75Ω で終端したピンプラグを接続し、その両端を Oscilloscope のプローブでつまみます。

(3) DVDVIDEOPLAYER の S 端子出力を本機の DVD 入力端

子に接続します。

(4) 電源コードを電源コンセントに接続し、電源スイッチ

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を "ON"にします。

(5) ON後、次のようにセットします。

・本機の FUNCTION を DVD にする。・テストディスクのカラーバー 75%(Title12) を再生す

(6) VR601を時計方向 ( ) に回しコンポーネントビデオ

Y(H.Sync を除く ) の電圧を調整します。(Fig.1 参照 )

(7) 同じ方法で Cr:VR602、Cb:VR603 の可変抵抗器を調整

します。(fig.2、3 参照 )

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( スピーカ・ダミー抵抗器などを接続しない。)

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る。

714mV ±50mVp-p

Cb,Cr:525± 50mVp-p

( 例 :DVD-1500)

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AVR-1705/685

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Oscilloscope

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VR603

Cb

Cr

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MONITOR OUT

(Y,Cb,Cr)

Y

VR601VR602

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Video Section

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AVR-1705/685

Volts

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Volts

IRE:FLT

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100.0

0.5

-20.0 -10.0 0.0

IRE:FLT

0.5

Y-Signal

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714±50mV

p-p

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10.0

20.0 30.0

Fig.1 Component Video Y signal

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40.0 50.0 60.0

486±50mV (U.S.A. & Canada model)

p-p

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0.0

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-0.5

Volts

0.5

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-50.0

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IRE:FLT

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-50.0

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20.0

Fig.2 Cb signal

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60.0

486±50mV (U.S.A. & Canada model)

80.0

p-p

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Fig.3 Cr signal

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BLOCK DIAGRAM

AVR-1705/685

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LEVEL DIAGRAMS (1/2)

AVR-1705/685

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LEVEL DIAGRAMS (2/2)

AVR-1705/685

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SEMICONDUCTORS

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

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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。

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1. IC’s

CXP740096 (IC201)

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PC6

PC7

PA0

PA1

PA2

PA3

PA4

DDVSS

PA5

PA6

PA7NCV

PK1/TX

PK2/TEX

8

PI1/RMC

PI2/NMI

PI3/TO0/ADJ

PI4/INT1/CS1

PI5/SCK1

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AVR-1705/685

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999897969594939291

PC5 PC4 PC3 PC2 PC1 PC0

PB7/SI2

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CXP740096 Terminal Function

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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

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

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V

PH1

PH0

RST

XTAL

PK7/TO1

EXTAL

3

PK6/CS0

7

PK5/SI0

PK4/SO0

PK3/SCK0

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PF7/AN11

PF6/AN10

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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

1

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 AV AV PF4/AN8

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DD

REF

SS

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No.

1 BD3811K1/3812F_MUTE O BD3811K/BD3812F MUTE CONTROL

2 BD3811K1/3812F_CLK O BD3811K/BD3812F CLOCK

3 BD3811K1/3812F_DATA O BD3811K/BD3812F DATA

4 CDR/TAPE O CDR/TAPE MUTE

5 VCR O VCR MUTE

6 ERR_MUTE O ERR MUTE

7 SEL_CLK O SEL_CLK

8 BSE O AC3MUTE MUTE for BITSTREAM

9 89057_EMPHA I LC89057 CONTROL

10 SW_SUM O SW SUMMING CONTROL

11 SHARC_SDIN I SHARC EX(DSP) DATA INPUT

12 89057_SDIN I LC89057 CONTROL

13 EPROM_RESET O EPROM RESET

14 89057_RESET O LC89057 RESET

15 SHARC_CS O SHARC EX(DSP) CS

16 SHARC_SDOUT O SHARC EX(DSP) DATA OUTPUT

17 89057_CE O LC89057 CONTROL

18 89057/1837_SDOUT O CONTROL DATA

19 89057/1837_SCLK O CONTROL CLOCK

20 1837_RESET O CODEC RESET

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21 REELAY_SURR_B O SURROUND BACK RELAY

22 SW_MUTE O SW MUTE

Pin Name I/O Function

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12

AVR-1705/685

No.

23 RELAY_FRONT_B O FRONT B RELAY

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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 RELAY H/P

28 FUNC_UP O ENCODER INPUT (FUNCTION)

29 H/P_DETECT I DETECT H/P

30 FUNC_DOWN O ENCODER INPUT (FUNCTION)

31 SURR_SB_MUTE O SURROUND BACK MUTE

32 CNT_MUTE O CENTER MUTE

33 NC - -

34 SURR_MUTE O SURROUND MUTE

35 NC - -

36 NC - -

37 NC - -

38 FL_DRV_RST O LC75721 RESET

39 RELAY_POWER O POWER RELAY

40 RESET I RESET

41 GND GND

42 XTAL CRISTAL OSIRATER CONNECTION

43 EXTAL CRISTAL OSIRATER CONNECTION

44 FL_DRV_CE O LC75721 CE

45 FL_DRV_DATA O LC75721 DATA

46 FL_DRV/2090_CLK O LC75721/BU2090 CLOCK

47 2090_DATA O BU2090 DATA

48 VOL_DOWN I ENCODER INPUT (VOLUME)

49 VOL_UP I ENCODER INPUT (VOLUME)

50 SEL_DOWN I ENCODER INPUT (SELECTOR)

51 SEL_UP I ENCODER INPUT (SELECTOR)

52 AV

53 V

54 AV

55 S-VIDEO_DET I S Signal Detect input

56 COPM_DET I Compornent Signal input

57 STEP_OPT I AREA SELECT

58 SET_OPT I MODEL SELECT

59 GND GND

60 KEY_IN3 I KEY INPUT

61 KEY_IN2 I KEY INPUT

62 KEY_IN1 I KEY INPUT

63 C-VIDEO_DET I Composit Signal Detect input

64 PROTECT I PROTECTION

65 89057_INT LC89057 INT

66 SHARC_SCLK O SHARC EX(DSP) SCLK

67 1837_CE O CODEC CE

68 SHARC_RESET O SHARC EX(DSP) RESET

69 FRONT_MUTE O FRONT MUTE

70 PWR_DOWN I POWER DOWN DETECT

71 NC - -

72 NC - -

73 NC - -

74 VIDEO_MUTE O VIDEO MUTE

75 TA1270_TC90A69 DATA O TA1270/TC90A69 DATA

w

76 TA1270_TC90A69 CLK O TA1270/TC90A69 SCLK

77 RDS_DATA I RDS(TDA7330) DATA

Pin Name I/O Function

7

6

13942296513

SS

REF

DD

w

.

1

3

xia

5

o

1

AVSS

VREF

AVD D

y

5

u

0

Q

1

3

6

7

3

8

6

3

.

9

1

5

c

2

5

o

4

0

m

9

8

9

8

2

4

2

9

8

9

2

9

TEL 13942296513 QQ 376315150 892498299

9

13

AVR-1705/685

No.

78 RDS_CLK I RDS(TDA7330) CLOCK

Q

TEL 13942296513 QQ 376315150 892498299

3

79 FLAG3 I Special flag for ROM update

80 FLAG2 I DSP operation check flag

81 FLAG1 I NON USE

82 FLAG0 I EPROM chip select control for DSP

83 VIDEO_SEL1

84 VDEO_SEL2

85 REMOCON REMOTE CONTROL SIGNAL INPUT

86 NC - -

87 GND GND

88 V

89 V

90 NC - -

91 NC - -

92 PLL_DATA O PLL CONTROL (LC72131)

93 PLL_CLK O PLL CONTROL (LC72131)

94 PLL_DT_IN I PLL CONTROL (LC72131)

95 TU_MUTE O TUNER MUTE

96 ST I STEREO DETECT

97 TUNED I TUNE DETECT

98 PLL_CE O PLL CONTROL (LC72131)

99 2090_CLK(VIDEO) O BU2090 CLK

100 2090_DATA(VIDEO) O BU2090 DATA

Pin Name I/O Function

7

6

SS

DD

(BACK UP) VDD FOR BACK UP

3

1

5

1

VSS

5

0

8

9

2

4

9

8

2

9

TEL 13942296513 QQ 376315150 892498299

TEL

13942296513

Q

3

7

6

3

1

5

1

5

0

8

9

2

4

9

8

2

9

w

.

xia

o

y

u

1

6

3

14

.

c

o

m

ADSP-21266SKSTZ-2B (IC804)

AVR-1705/685

7

DDINT

DDEXT

DDINT

DDEXT

DDINT

DDEXT

DDINT

w

3

13942296513

w

Q

TEL 13942296513 QQ 376315150 892498299

ADSP-21266SKSTZ-2B Terminal Function

Pin Name

V CLKCFG0 2 GND 38 GND 74 V CLKCFG1 3 RD 39 V BOOTCFG0 4 ALE 40 GND 76 V BOOTCFG1 5 AD15 41 DAI_P10 (SD2B) 77 GND 113 GND 6 AD14 42 DAI_P11 (SD3A) 78 V V

TEL

GND 8 GND 44 DAI_P13 (SCLK23) 80 V V GND 10 AD12 46 DAI_P15 (SD4A) 82 V V GND 12 GND 48 GND 84 V V GND 14 AD10 50 DAI_P16 (SD4B) 86 SPIDS 122 FLAG0 15 AD9 51 DAI_P17 (SD5A) 87 GND 123 FLAG1 16 AD8 52 DAI_P18 (SD5B) 88 V AD7 17 DAI_P1 (SD0A) 53 DAI_P19 (SCLK45) 89 SPICLK 125 GND 18 V V GND 20 DAI_P2 (SD0B) 56 GND 92 GND 128 V GND 22 GND 58 DAI_P20 (SFS45) 94 V V AD6 24 V AD5 25 GND 61 FLAG2 97 GND 133 AD4 26 DAI_P4 (SFS0) 62 FLAG3 98 CLKOUT 134 V GND 28 DAI_P6 (SD1B) 64 GND 100 TDO 136 AD3 29 DAI_P7 (SCLK1) 65 V AD2 30 V V GND 32 V AD1 33 GND 69 V AD0 34 DAI_P8 (SFS1) 70 GND 106 CLKIN 142 WR 35 DAI_P9 (SD2A) 71 V V

w

6

LQFP Pin # Pin Name

1V

7 AD13 43 DAI_P12 (SD3B) 79 GND 115

9V

11 V

13 AD11 49 GND 85 RESET 121

19 GND 55 GND 91 MOSI 127

21 DAI_P3 (SCLK0) 57 V

23 V

27 DAI_P5 (SD1A) 63 V

31 GND 67 V

36 V

.

1

3

DDINT

DDEXT

DDINT

DDEXT

DDINT

xia

5

o

1

5

0

144

1

PIN 1 INDICATOR

TOP VIEW

36

37

LQFP Pin # Pin Name

37 V

Q

45 DAI_P14 (SFS23) 81 GND 117

47 V

54 V

59 GND 95 A 60 V

66 GND 102 TRST 138

68 GND 104 TMS 140

72 V

y

u

1

Q

DDEXT

DDINT

3

DDINT

DDEXT

DDINT

6

7

3

8

6

3

.

9

109

72

1

108

73

1

5

c

4

2

LQFP Pin # Pin Name

73 GND 109

75 GND 111

0

5

83 GND 119

90 MISO 126

93 V

96 A

99 EMU 135

101 TDI 137

103 TCK 139

105 GND 141

107 XTAL 143 108 V

o

9

8

m

2

8

DDINT

9

4

DDEXT

DDINT

DDEXT

VDD

VSS

DDEXT

2

8

9

2

LQFP Pin #

110

112

114

9

116

118

120

124

129 130 131 132

144

9

TEL 13942296513 QQ 376315150 892498299

15

LC89057W (IC807)

AVR-1705/685

7

Q

TEL 13942296513 QQ 376315150 892498299

TLRCK/PIO2

TDATA/PIO3

3

RXOUT

RX0 RX1 RX2 RX3 RX4

RX5/VI

RX6/UI

LPF

TMCK/PIO0

TBCK/PIO1

TXO/PIOEN

1

2 3 4 5 8 9

10

13

44 45 46 47

48

6

EMPHA/UO33AUDIO/VO35INT40CL39CE38DI

Input

Selector

Modulation

or

Parallel Port

29

XIN

3

32

C bit, U bit

PLL

XOUT

1

5

Demodulation

&

Lock Detect

Clock

Selector

28

27

XMCK34CKST

1

5

Microcontroller

I/F

Data

Selector

I/N

0

XMODE 41

37

36

21

24

16 17 20 22 23

DO

RERR

RD ATA

SDIN

RMCK RBCK RLRCK SBCK SLRCK

8

9

2

4

36 RERR1RXOUT

35 INT2RX0

34 CKST3RX1

TOP VIEW

9

33 AUDIO/VO4RX2

32 EMPHA/UO5RX3

8

31 DGND6DGND

30 DVDD7DVDD

29 XIN8RX4

2

28 XOUT9RX5/VI

27 XMCK10RX6/UI

26 DVDD11DVDD

25 DGND12DGND

9

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

9

TEL 13942296513 QQ 376315150 892498299

LC89057W Terminal Function

Pin No.

TEL

1 RXOUT O Input bi-phase select data output terminal

2 RX0 I TTL compatible digital data input terminal

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

4 RX2 I TTL compatible digital data input terminal

5 RX3 I TTL compatible digital data input terminal

6 DGND — Digital GND

7 DVDD — Digital power

8 RX4 I TTL compatible digital data input terminal

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

10 RX6/UI I 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 I Serial audio data input terminal

25 DGND — Digital GND

26 DVDD — Digital power

27 XMCK O Osc. amp output terminal

Pin Name

I/O

13942296513

Q

3

7

Function

3

6

1

5

1

5

0

8

9

2

4

9

8

2

9

w

.

xia

o

y

u

1

6

3

16

.

c

o

m

AVR-1705/685

Pin No.

Q

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 I µcom I/F, write data input terminal

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

40 CL I µcom I/F, clock input terminal

TEL 13942296513 QQ 376315150 892498299

41 XMODE I 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.

Pin Name I/O

7

3

6

3

1

5

1

5

0

Function

8

9

2

4

9

8

2

9

TEL 13942296513 QQ 376315150 892498299

BD3811K1 (IC701)

TEL

w

13942296513

w

.

IN22

80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65

IN31

1

IN32

2

IN41

3

IN42

4

IN51

5

IN52

6

IN61

7

IN62

8

IN71

9

IN72

10

IN81

11

IN82

12

INDVDSR

13

INDVDSL

14

INDVDC

15

INDVDSW

16

OUT2(+)

17

OUT2(-)

18

OUT1(+)

19

OUT1(-)

20

IN1DSP

21

IN1MIX

22

IN2DSP

23

IN2MIX

24

xia

25 26

INDSPSR

IN21

IN12

IN11

ROUT32

ROUT31

ROUT22

ROUT21

ROUT12

ROUT11

AGND10

GOUT2

VIN2

AGND9

5

1

5

1

3

6

7

3

Q

TREBLE

BASS

5.1ch Mode SW2 DVD

LOGIC

6

AGND2

5.1ch Mode SW1

3

VINC

GOUTC

.

OUTSW

c

OUTC

OUTSL

o

OUTSR

5.1ch Mode SW2 DSP

o

y

u

AGND1

1

GOUTSW

VINSW

27 28 29 30 31 32 33 34 35 36 37 38 39 40

INDSPC

INDSPSL

INDSPSW

GOUT1

0

BASS

BOOST

m

VINSL

8

VIN1

9

GOUTSL

64

63

62

61

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

2

4

TNF2

TNF1

BNF11

BNF21

BNF12

BNF22

BBNF2

OUT2

BBNF1

OUT1

AGND8

AGND7

VCC

AGND6

VEE

AGND5

MUTE

CL

DA

DGND

AGND4

GOUTSR

VINSR

AGND3

9

8

2

9

17

AD1837 (IC808)

AVR-1705/685

Q

3

6

7

TEL 13942296513 QQ 376315150 892498299

TEL

AD1837 Terminal Function

w

13942296513

Pin Name

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

w

51 CCLK I Control Clock Input for Control Data

.

1

3

DLRCLK

DBCLK

DSDATA1

DSDATA2

DSDATA3

DSDATA4

ADCLP

ADCLN

ADCRP

ADCRN

ADC

AD1837

Input/

Output

xia

5

DVDD

CLATCH

PD/RST

AGND

OUTL1

OUTR1

AGND

AVDD

OUTL2

Σ-∆

o

1

5

0

DGND

CCLK

COUT

ASDATA

ODVDD

MCLK

50 494847 46 45 44 43 42 41 40

51

52

1

2

3

CIN

4

5

NC

6

7

NC

8

9

10

11

NC

12

13

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

NC

FILTD

AGND

OUTR2

SERIAL DATA

I/O PORT

DIGITAL FILTER

DGND AGND AGND AGND AGNDDGND

y

u

ALRCLK

TOP VIEW

AVDD

FILTR

ADCLN

CONTROL PORT

Q

1

6

ABCLK

ADCLP

3

DSDATA4

DSDATA3

ADCRP

ADCRN

CINCLATCHCCLK COUT

VOLUME

7

3

8

DSDATA2

AGND

6

DSDATA1

NC

CLOCK

DIGITAL FILTER

1

3

.

9

DGND

OUTL3

MCLKASDATAABCLKALRCLKODVDDDVDD DVDD

DescriptionPin No.

4

2

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

PD/RST M/S AVDD AVDD

Σ-∆

DAC

Σ-∆

DAC

Σ-∆

DAC

Σ-∆

DAC

0

5

1

5

V

REF

c

o

9

OUTL1

OUTR1 OUTL2

OUTR2 OUTL3

OUTR3 OUTL4

OUTR4 FILTD

9

8

FILTR

m

8

2

4

2

9

8

9

2

9

TEL 13942296513 QQ 376315150 892498299

9

18

AVR-1705/685

Q

TC90A69F (IC609)

Q

28

TEL 13942296513 QQ 376315150 892498299

3

COUT

27

DAC

INTERPOLATION

1

2

VRT

BIAS VB1

7

VSS1

26

(8fsc)

CORING PEAKING

3

VDD1

6

YOUT

25

DAC

4

TESTI1

VB2

24

PLL DET 1/2VCO

LPF

5

VSS2

3

PD

23

Ped. CLIP

ADC

6

VRB

1

FIL

22

1/8

Sync. Clamp

7

YCIN

5

VSS4

21

8fsc 4fsc

KILLER

8

TEST

VDD4

20

DELAY

CNR

C-N.C

9

KILLER

19

10

1

5

FSC

TESTOUT

MODE1

18

17

CORING V-ENHANCER

LINE

MEMORY

DYNAMIC COMB FILTER

11

12

VSS3

VDD3

TESTI2

0

SDA

16

IIC BUS

13

VDD2

SCL

15

14

TESTI3

1Yin

Cin

8 Bias

LC75721E (IC301)

LC75721E Terminal Function

Symbol

32

17

V

DD

Vss

AM 17

V

FL

AM 18 AM 19 AM 20

DI

AM 21

CL

AM 22 AM 23

CE

AM 24 AM 25 AM 26

OSCI

AM 27

OSCO

AM 28 AM 29

RES

AM 30 AM 31

AM1~AM35

AM 32

AA1~AA3 AA4/G16

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

G1~G11 Grid output terminal TEST LSI test terminal

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

Q

System reset terminal

Anode output terminal

Anode/Grid output terminal

Function

3

7

OSCO

TEST

TEL

G7 G8G9

G10

G11

AA8/G12

AA7/G13

AA6/G14

AA5/G15

AA4/G16

AA3

AA2

AA1

AM35

48 33

49

DI CL CE

RES

DD

V

OSCI

Vss

FL

V G1 G2

13942296513

G3 G4 G5 G6

64

AM 1

AM 2

AM 3

AM 4

AM 5

AM 6

AM 7

AM 8

AM 9

AM 10

AM 11

AM 12

AM 13

AM 14

AM34

AM 15

AM33

161

AM 16

NJM2274R (IC614)

8

Disc.

9

1

2

3

4

Clamp

4

2

TOP

VIEW

Power Save CTL

7

C Mute CTL

BU2090F (IC302,607,615)

1

VSS

DATA

2

3

CLOCK

LCK

4

Q0

5

6

Q1

7

Q2

8

9

Q4

0

5

1

5

1

3

6

8

7

6

5

Vref

CONTROL CIRCUIT

12-bi t SHIFT REGI STER

12- bit STRAGE REGI STER

OUTPUT BUFF ER (OPE N DRAI N)

8

9

Vcc

2

+

2

GND

9

8

2

4

+

9

2

18

17

16

15

14

13

12

11Q3

10

8

9

750 ohm

VDD

OE

Q11

Q10

Q9

Q8

Q7

Q6

Q5

2

9

3 Vout

Vsag4

TEL 13942296513 QQ 376315150 892498299

9

TA1270BF (IC606)

DAC1

39

Y INPUT

40

41

DAC Vcc (5V)

42

C Vcc (5V)

43

UV/CbCr SW

fsc OUTPUT

44

1HDL CONT

45

46

SECAM CONT

B-Y/Cb OUTPUT

47

R-Y/Cr OUTPUT

48

w

DAC237Y OUTPUT36GND35DAC

38

DAC2

DAC1

PEDESTAL

CLAMP

fsc

1H DL

CONTROL

SECAM

CONTROL

CbCr / UV

SW

1

4.43MHz

TEST34SDA33SCL32Ys

Y OFFSETSWDAC

TEST

SUB-

Y DL

CONTRAST

SW

fsc

Y DL

TRAP

SYSTEM

LPF / fsc

TRAP

BPF H. AFC H C / D

2

3

4

X’tal

M-X’tal

3.58MHz

.

APC

SUB-COLOR

APC

xia

VCXO

X’tal

I2C BUS

CONTROL

MATRIX

P / N ID

5

C GND

CW

SW

TOF

ACC

6

OUTPUT

CHROMA

(TH=0.7V

HI; 1IN/LOW; 2IN)31R-Y1

Ys

TINT

DEMO

CHROMA

BLK

V SEP

7

V-SEP

SYNC

SEP

OFFSET

8

SYNC.

INPUT30B-Y1

PEDESTAL

SW

INPUT

CLAMP

9

C

2

INPUT29Y1

INPUT28I

R-Y2

INPUT26B-Y2

INPUT25Y2

27

SW

12

32fh VCO

PEDESTAL

CLAMP

13

VD

INPUT

HI: 20h/LOW: 24h

SW

CP / HP

IN

V C / D

SCP

14

HD

OUTPUT

u

SW GND

24

23

ADRS SW

R-Y/R

22

OUTPUT B-Y/B

21

OUTPUT Y/G

20

OUTPUT SW

19

Vcc (9V) SYNC

18

Vcc (9V) CP/HP

17

INPUT

Dig GND

16

SCP

15

OUTPUT

1

GND

6

SYNC.

OUTPUT

YUV RGB

MATRIX

NOSE

DET

10

11

AFC

SYNC.

FILTER

o

GND

32fH VCO

GND

y

19

MM74LCX244 (IC809-811)

TOP VIEW

1

OE

2

I0

3

O4

4

I1

5

O5

6

I2

7

O6

8

I3

912

O7 O3

10 11

3

.

20

19

18

17

16

15

14

13

c

VCC

OE2

O0

I4

O1

I5

O2

I6

I7

o

LECT

SE

1A

1B

1Y

2A

2B

2Y

GND

m

74LVX157 (IC816)

1

SEL

2

3

4

5

6

7

8

16

15

14

13

12

11

10

Vcc

ST

4A

4B

4Y

3A

3B

9

3Y

BA7625 (IC651) BA7626 (IC612,613,616,652,653)

AVR-1705/685

7

Q

3

TEL 13942296513 QQ 376315150 892498299

IC63LV1024-10T (IC827)

6

ABE

LL* IN 1 LL*

H L * IN 2 H L * IN 2 H L *

L H * IN 3 L H * IN 3 L H * IN 3

H H L IN 4 H H L IN 4 H H L IN 4

HHH IN 5 HHH IN 5 HHH IN 5

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).

3

1

5

MONITOR OUT

1

Monitor OUT

GND

IN5

GND

IN4

CTL E

IN3

CTL D

5

0

1

2

3

4

5

6

7

8

C D E V OUT 1 C D E V OUT 2

6dB

LOGIC

6dB

LOGIC



8

16

15

14

13

12

11

10

9

4

2

9

IN1

CTL A

V OUT1

Vcc

IN2

CTL B

V OUT2

CTL C

LL* IN 1

9

8



2

9

TEL 13942296513 QQ 376315150 892498299

TEL

BD3812F (IC702) MM74HCT244 (IC812) RC1117-1.2 (IC824)

IN 1

AGND

IN 2

AGND

V

EE

13942296513

1

2

3

4

5

㧗

㧙

㧗

㧙

14 OUT1

13 OUT2

12 SEL

11

DGND

MUTE

10

Q

1G

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

GND

0

1

2

3

Q

3

7

6

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

14 7 13 8 12 9 11 10

3

V 2G 1Y 2A

1Y

2A

1Y

2A

1Y

2A

8

9

4

2

9

8

0

5

1

5

1

RC1117-3.3 (IC823)

OUT

FRONT VIEW

3

2

1

IN

OUT

ADJ/GND

CC

0

1

2

3

V

2

9

AGND

CC

V

w

6

w

.

xia

LOGIC

DA

9

CL

87

o

y

u

1

6

3

20

.

c

o

m

LH28F800BJE (IC805)

AVR-1705/685

Q

3

7

6

3

1

5

1

5

0

TEL 13942296513 QQ 376315150 892498299

SN74LV573APW (IC818,819)

Vcc

20

Q0

19

Q1

18

Q2

17

Q3

16

Q4

15

Q5

14

13

Q6

12

Q7

11

LE

OE

11

E

1

D1 D2

D0

234

D

L

Q

L

1819

7

3

L

Q

Q0 Q1

Q

TEL

1

OE

2

D0

3

D1

4

D2

D3

5 6

D4

7

D5

8

D6

9

D7

GND

13942296513

10

2

9

8

D3 D4 D5 D6

567

D

Q

L

Q4 Q5 Q6 Q7

5

1

5

17

Q2

6

D

3

Q

L

16

Q3

1

4

9

D7

89

D

Q

L

8

0

D

9

L

Q

2

8

12131415

4

2

9

8

9

2

9

TEL 13942296513 QQ 376315150 892498299

9

SN74LVC139APWR (IC820)

1

1G

2

1A

3

1B

4

1Y0

5

1Y1

6

1Y2

7

1Y3

8

GND

w

.

xia

FUNCTION TABLE

(each decoder/demultiplexer)

16

V

CC

15

2G

14

2A

13

2B

12

2Y0

11

2Y1

10

2Y2

9

2Y3

o

y

INPUTS

SELECT

G

B A Y3 Y2 Y1 Y0

L L L H H H L

L L HHHLH

L H LHLHH

L H HLHHH

H X X H H H H

u

1

6

OUTPUTS

3

.

c

o

m

21

2. FL DISPLAY

16-ST-66GNK (FL301)

7

Q

1

3

6

3

1

5

1

5

0

8

9

2

58

4

9

AVR-1705/685

2

8

9

TUNED

RDS

CH

STEREO

AUTO

REC

ZONE2

PHONO

VCR

CD

-

1

TUNER

-2-

AUX

3 V.AUX

DVD /

CDR

/

VDP TV

TAPE

-1-

DBS

/

2

TEL 13942296513 QQ 376315150 892498299

G16

TUNED

RDS

CH

Pin Assignment

PIN NO. CONNECTION

PIN NO.

TEL

13942296513

CONNECTION

PIN NO. CONNECTION

G12

VCR

G11

G10

CD

-

TUNER

-2-

1

G15 G13

STEREO

AUTO

G14

1234 5

F1 F1 S1 S2 S3 21 22

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

REC

ZONE2

PHONO

23 24 25

G7

G9

AUX

3

V.AUX

G8

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

6

S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15

S4

27 28 29 30 31 32 33 34

26

47 48 49 50 51 52 53 54 55 56 57

46

G6

DVD / CDR

Q

G5

/

G4

VDP

TAPE

7

3

PRO LOGICII DIGITAL

DIGITAL

G3

TV

-1-

3

6

ANALOG

G2

DBS

/

2

DIGITAL

1

5

G1

PRO LOGICII DIGITAL

ANALOG

0

5

1

G1

S9

S14

S13

S1

S6

S11

S16

S21

S26

S31

4

S10

S15

S11

S12

G2~G16

S2

S3

S8

S7

S12

S13

S17

S18

S22

S23

S27

S28

S32

S33

S16 S17

8

9

58

S38

35 36 37 38 39 40

2

9

8

2

S4

S9

S14

S19

S24

S29

S34

S5

9

S1

S6

S7

S4

S5

S10

S15

S20

S25

S30

S35

20

S18

9

S2

S3

TEL 13942296513 QQ 376315150 892498299

Anode & Grid Assignment

G1

G2~G16

S1 S2

S3 S4 S5 S6 S7 S8 S9

TV

VDP

2

-

1

TAPE

S36 S37 S38

S1 S2 S3 S4 S5 S6 S7 S8 S9

S1 S2 S3 S4 S5 S6 S7

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)

G1 S10 S11

S12

S13 S14 S15

DIGITAL

PRO LOGICII

AUXDVD

CDR

V.AUX

G2~G16

S10 S11 S12 S13 S14 S15 S16 S17 S18

S19

S20

S21 S22 S23 S24

S25

S26 S27

TUNER

-

2

-

3

CD

-

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

G1

G2~G16

S19 S20 S21 S22 S23 S24

S25 S26 S27

PHONO

1

VCR

S28 S29 S30 S31 S32 S33 S34 S35

REC

ZONE2

G1

STEREO

AUTO

G2~G16

S28 S29 S30 S31

S32 S33

S34 S35

G16

TUNED

RDS

CH

w

.

xia

o

y

u

1

6

3

22

.

c

o

m

PRINTED WIRING BOARDS

MAIN P.W.B. UNIT

Q

3

7

6

3

1

5

1

5

0

8

9

2

4

9

8

2

AVR-1705/685

9

TEL 13942296513 QQ 376315150 892498299

T

E

L

1

3

9

4

2

9

6

5

1

3

Q

3

7

6

3

1

5

1

5

0

8

9

2

4

9

8

2

9

TEL 13942296513 QQ 376315150 892498299

9

w

.

x

i

a

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COMPONENT SIDE

Denon AVR-1705, AVR-1685 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY PRECAUTIONS

DIMENSION

CAUTION IN SERVICING

ADJUSTMENT

Audio Section

Video Section

BLOCK DIAGRAM

SEMICONDUCTORS

PRINTED WIRING BOARDS

MAIN P.W.B. UNIT