Denon-AVR488-avr-sm维修电路原理图.pdf

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1、Denon Brand Company, D&M Holdings lnc.For purposes of improvement, specifications and design are subject to change without notice.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 a

2、ctual set.注意前、必読。本機、火災、感電、対安全性確保、配慮、法的電気用品安全法、所定許可得製造。従際、安全性維持、記載注意事項必守。本機仕様性能改良、予告変更。補修用性能部品保有期間、製造打切後 8 年。修理際、必取扱説明書参照上、作業行。本文中使用、説明都合上現物多少異場合。X0349 V.05 DE/CDM 0804SERVICE MANUALAV SURROUND RECEIVERAV SURROUND AMPLIFIERMODELJPE3E2EKE2AE1CEUTAVR-1708?AVR-1508?AVR-688? ?AVR-588? ?AVR-488? ?AVC-1508

3、? ?Ver. 5Please refer to theMODIFICATION NOTICE.RadioFans.CN 收音机爱 好者资料库2AVR-1708/1508/688/588/488 AVC-1508Please heed the points listed below during servicing and inspection. Heed the cautions!Spots requiring particular attention when servicing, suchas the cabinet, parts, chassis, etc., have caution

4、s indicatedon labels or seals. Be sure to heed these cautions and thecautions indicated in the handling instructions. Caution concerning electric shock!(1) An AC voltage is impressed on this set, so touching in-ternal metal parts when the set is energized couldcause electric shock. Take care to avoi

5、d electric shock,by for example using an isolating transformer andgloves when servicing while the set is energized, un-plugging the power cord when replacing parts, etc.(2)There are high voltage parts inside. Handle with extracare when the set is energized. Caution concerning disassembly andassembly

6、!Though great care is taken when manufacturing parts fromsheet metal, there may in some rare cases be burrs on theedges of parts which could cause injury if fingers aremoved across them. Use gloves to protect your hands. Only use designated parts!The sets parts have specific safety properties (fire

7、resis-tance, voltage resistance, etc.). For replacement parts, besure to use parts which have the same properties. In par-ticular, for the important safety parts that are marked z onwiring diagrams and parts lists, be sure to use the desig-nated parts. Be sure to mount parts and arrange thewires as

8、they were originally!For safety reasons, some parts use tape, tubes or other in-sulating materials, and some parts are mounted away fromthe surface of printed circuit boards. Care is also taken withthe positions of the wires inside and clamps are used tokeep wires away from heating and high voltage

9、parts, sobe sure to set everything back as it was originally. Inspect for safety after servicing!Check that all screws, parts and wires removed or discon-nected for servicing have been put back in their original po-sitions, inspect that no parts around the area that has beenserviced have been negati

10、vely affected, conduct an insu-lation check on the external metal connectors and betweenthe blades of the power plug, and otherwise check thatsafety is ensured.(Insulation check procedure)Unplug the power cord from the power outlet, disconnectthe antenna, plugs, etc., and turn the power switch on. U

11、s-ing a 500V insulation resistance tester, check that the in-sulation resistance between the terminals of the powerplug and the externally exposed metal parts (antenna ter-minal, headphones terminal, microphone terminal, inputterminal, etc.) is 1M or greater. If it is less, the set mustbe inspected

12、and repaired.Concerning important safetypartsMany of the electric and structural parts used in the sethave special safety properties. In most cases these prop-erties are difficult to distinguish by sight, and using re-placement parts with higher ratings (rated power andwithstand voltage) does not ne

13、cessarily guarantee thatsafety performance will be preserved. Parts with safetyproperties are indicated as shown below on the wiring dia-grams and parts lists is this service manual. Be sure to re-place them with parts with the designated part number.(1) Schematic diagrams . Indicated by the z mark.

14、(2) Parts lists . Indicated by the z mark.Using parts other than the designatedparts could result in electric shock, fires orother dangerous situations.SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKB

15、efore returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassisresistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of thepower cord is less than 460 kohms, the unit is defective.CAUT

16、IONCAUTIONRadioFans.CN 收音机爱 好者资料库3AVR-1708/1508/688/588/488 AVC-1508、点検時注意願。注意事項守！特注意必要個所、 部品、 捺印注意事項表示。 注意書取扱説明書注意事項必守。感電注意！(1) 、交流電圧印加通電時内部金属部触感電。従通電時、絶縁使用手袋着用、部品交換、電源抜感電注意。(2) 内部高電圧部分、通電時取扱十分注意。分解、組立作業時注意！板金部品端面、部品製造時充分管理、 板金端面鋭利箇所有、 部品端面触指動怪我場合十分注意作業下。 手保護手袋着用。指定部品使用！部品難燃性耐電圧安全上特性持。 従交換部品、 使用同特性

17、部品使用。特配線図、 部品表 z 印指定安全上重要部品必指定使用。部品取付配線引、 元！安全上、絶縁材料使用、基板浮取付部品。 内部配線引発熱部品高圧部品接近配慮、 必元。後安全点検！取外、 部品、 配線元、 個所周辺劣化点検、 外部金属端子部、 電源刃間絶縁、安全性確保確認。（絶縁方法）電源電源抜、 外、電源入。500V 絶縁抵抗計用、 電源端子外部露出金属部端子、端子、端子、入力端子間、絶縁抵抗値 M 以上確認。 値以下点検修理必要。安全上重要部品本機使用多電気部品、 機構部品安全上、 特別特性持。 特性場合、 外観判別、 部品高定格（定格電力、耐圧）持使用安全性維持、 限。 安全上特性持

18、部品、 配線図、 部品表表示必指定部品番号使用願。(1) 配線図 z 表示。(2) 部品表 z 表示。指定部品異使用場合、感電、火災危険生恐。注意注意4AVR-1708/1508/688/588/488 AVC-1508DIMENSION AVR-1708 model 344.0434.016.0155.0171.026.554.7214.5335.2382.921.25AVR-1708/1508/688/588/488 AVC-1508 AVR-1508 / AVC-1508 model344.0434.016.0155.0171.026.554.7214.5335.2382.921.26A

19、VR-1708/1508/688/588/488 AVC-1508 AVR-688 model 20.754.7214.5335.2377.121.2344.0434.016.0155.0171.07AVR-1708/1508/688/588/488 AVC-1508 AVR-588 model20.754.7214.5335.2377.121.2344.0434.016.0155.0171.08AVR-1708/1508/688/588/488 AVC-1508 AVR-488 model20.754.7214.5335.2377.121.2344.0434.016.0155.0171.09

20、AVR-1708/1508/688/588/488 AVC-1508CAUTION IN SERVICINGInitializing AV SURROUND RECEIVER/AM-PLIFIERAV SURROUND RECEIVER/AMPLIFIER initialization should be performed when the com, peripheral parts of com, and Digital P.W.B. are replaced.1. Switch off the unit.2. Hold the following SPEAKERS-A button an

21、d 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 but-tons and the microprocessor will be initialized.Note:If step 3 does not work, start over from step 1. All user settings will be lost an

22、d this factory setting will be recovered when this initialization mode.So make sure to memorize your setting for restor-ing after the initialization.JIG to use for servicingWhen you repair the printing board, you can use the following JIG (Extension cable kit). Please order to Denon Official Ser-vic

23、e Distributor in your region if necessary.00D SPK- 561 EXTENSION UNIT KIT: 1 Set00D SPK- 562 9120 CONN. JOINT KIT : 1 SetWhen you update the firmware, you can use the following JIG (RS232C to internal connector conversion adapter with 8P cable kit ). Please order to Denon Official Service Distrib-ut

24、or in your region if necessary.00DSPK-581 WRITING UNIT: 1 Set時注意事項AV / 初期化周辺部品、Digital 基板等交換場合、AV / 初期化行下。1.on/off OFF 。2.SPEAKERS-A SPEAKERS-B 同時押、on/off 押 ON 。3.表示約 1 秒間隔点滅確認後、2 指離。初期化。注意 :上記 3 状態場合、一度操作 1 直。初期化行客様設定内容工場出荷状態戻、設定内容控初期化後再設定。時使用治具基板修理際、使用治具 ( 延長）下記。必要応販社注文下。00D SPK- 561 EXTENSION UNI

25、T KIT: 1 式00D SPK- 562 9120 CONN. JOINT KIT: 1 式際、使用治具（RS232C- 製品内部 変換基板 +8P ) 下記。必要応販社注文。00DSPK-581 WRITING UNIT: 1 式1,22,3The illustration is AVR-1708.ss10AVR-1708/1508/688/588/488 AVC-1508DISASSEMBLY Disassemble in order of the arrow of the figure of following flow.下記図矢印順番。 In the case of the re-

26、assembling, assemble it in order of the reverse of the following flow.再組立場合、下記逆順番組立 In the case of the re-assembling, observe attention of assembling it.再組立場合、 組立注意遵守。CABINET TOPPANEL FRONT ASSYCHASSIS BACK ASSYTRANSRefer to DISASSEMBLY 1.PANEL FRONT ASSYRefer to DISASSEMBLY 2.CHASSIS BACK ASSYRefer

27、 to DISASSEMBLY 6.TRANSand EXPLODED VIEWand EXPLODED VIEWand EXPLODED VIEW 9 : POWER SW ASSY55 : SPEAKER ASSY10 : FUNCTION ASSY71 : TUNER PACK11 : FRONT ASSY14 : HEAD PHONE ASSYCPU ASSY21 : V. AUX ASSYRefer to DISASSEMBLY 3.HDMI PWB ASSY22 : MIC ASSYand DISASSEMBLY 4.CPU ASSYand EXPLODED VIEW51 : CP

28、U PWB ASSY52 : INPUT PWB ASSY53 : VIDEO PWB ASSY54 : HDMI PWB ASSYCHASSIS MAIN ASSYRefer to DISASSEMBLY 5.CHASSIS MAIN ASSYand EXPLODED VIEW33 : 2CH PWB ASSY50 : MAIN PWB ASSY56 : POWER SUPPLY PWB ASSY57 : POWER PWB ASSY11AVR-1708/1508/688/588/488 AVC-1508Picture CPicture APicture DPicture BPicture

29、G( Bottom view )The viewpoint of each photograph(photography direction)各図視点（撮影方向） Top view Picture JPicture IPicture EPicture FPicture H Top view Wire clamp bandCord holder12AVR-1708/1508/688/588/488 AVC-15081. PANEL FRONT ASSY(1) Remove the screws. ( 。 ）(2) Disconnect the connector wires and remove

30、 the screws . ( 。 ）Proceeding ( 手順 ) : CABINET TOP PANEL FRONT ASSY Picture A Top view Picture G Bottom view FFC cableCord holderPicture DPicture ICord holderCP302CP105Picture CWire clamp band : CUTCP503Picture EWire clamp band : CUTCord holderCP54113AVR-1708/1508/688/588/488 AVC-15082.CHASSIS BACK

31、ASSY(1) Disconnect the connector wires and unscrew a screw. ( 。)Picture FCP306Cord holderPlease refer to EXPLODED VIEW for the disassembly method of each P.W.B included in panel front assy.Panel front assy 各基板 EXPLODED VIEW 参照。Proceeding ( 手順 ) : CABINET TOPCHASSIS BACK ASSY Picture ECP103CP101CP103

32、CP102FFC cableWire clamp band : CUTCord holderPicture BCord bushAC cordPlease refer to EXPLODED VIEW for the disassembly method of each P.W.B included in Chassis back assy.Chassis back assy 各基板 EXPLODED VIEW 参照。14AVR-1708/1508/688/588/488 AVC-15083.CPU ASSY(1) Disconnect the connector wires and scre

33、w. ( 。)4. CHASSIS MAIN ASSYProceeding ( 手順 ) : CABINET TOP CHASSIS BACK ASSY CPU ASSYPicture HCP404Connector wireFFC cableWire clamp band : CUTCP904CP406CP405Picture ECP704CP514CP705Please refer to EXPLODED VIEW for the disassembly method of each P.W.B included in CPU assy.CPU assy 各基板 EXPLODED VIEW

34、 参照。Proceeding ( 手順 ) : CABINET TOP CHASSIS BACK ASSY CPU ASSY CHASSIS MAIN ASSY Please refer to EXPLODED VIEW for the disassembly method of each P.W.B included in chassis main assy.Chassis main assy 各基板 EXPLODED VIEW 参照。15AVR-1708/1508/688/588/488 AVC-15085. TRANS(1) Disconnect the connector wires

35、and remove the screws.（。 ）Proceeding ( 手順 ) : CABINET TOPTRANSPicture EWire clamp band : CUTCord holderCP104CP402CP402CP302CP105Please refer to EXPLODED VIEW for the disassembly method of Trans.Trans EXPLODED VIEW 参照。16AVR-1708/1508/688/588/488 AVC-1508Check mode for com/DSP version scom/DSP Version

36、 Display Mode1. Operation Speccom/DSP version display mode:At its starting state, version information is displayed.Starting method: E3,EUT,JP modelWhile pressing 2 buttons, STATUS and DIMMER , turn on/off button on.Then, press STATUS button to display the following information on the FL Display. E2

37、modelWhile pressing 2 buttons, RT and PTY , turn on/off button on.Then, press RT button to display the following information on the FL Display.2. Display OrderDestination information Main-com version information DSP version informationon/off buttonSTATUSDIMMERE3,EUT,JP modelon/off buttonRTPTYE2 mode

38、l17AVR-1708/1508/688/588/488 AVC-1508DSP 方法 sDSP 表示1. 動作仕様、DSP 表示 :起動状態、情報表示。起動方法 : E3,EUT,JP STATUS, DIMMER 2 押状態、on/off 押電源入。後、STATUS 押下表内容 FL Display 表示。 E2 RT, PTY 2 押状態、on/off 押電源入。後、RT 押下表内容 FL Display 表示。2. 表示順序仕向地表示 情報 DSP 情報on/off buttonSTATUSDIMMERE3,EUT,JP modelon/off buttonRTPTYE2 model1

39、8AVR-1708/1508/688/588/488 AVC-1508ADJUSTMENTAudio SectionIdling CurrentRequired measurement equipment: DC Voltmeter1. 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) Presetting POWER (Power source

40、switch)OFF SPEAKER (Speaker terminal)No load(Do not connect speaker, dummy resistor, etc.)2. Adjustment(1) Remove top cover and set VR101 FL, FR, C, SL, SR, on Main Amp. Unit, VR401, VR402 on 2ch- Amp. Unit at fully counterclockwise ( ) position.(2) Connect DC Voltmeter to test points (FRONT-Lch: TP

41、101, FRONT-Rch: TP105, CENTER ch: TP103, SURROUND-Lch: TP102, SURROUND-Rch: TP104, SURROUND-BACK Lch: TP401, SURROUND-BACK Rch: TP402).(3) Connect power cord to AC Line, and turn power switch ON.(4) Presetting.MASTER VOLUME: - counterclockwise ( min.)SPEAKER (Speaker terminal) : No load (Do not conn

42、ect speaker, dummy resistor, etc.)MODE: 7CH STEREOFUNCTION: 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.(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.0 mV 0.5 mV DC.(7) Adjust the Variable

43、Resistors of other channels in the same way.VR101SRTP104VR101FLTP101TP102VR101SLTP402VR402TP103VR101CVR101FRTP105F LchS LchS Back RchTP401VR401S Back LchC chS RchF RchDC VoltmeterMAIN AMP. UNIT2CH AMP. UNIT調整電流調整調整必要測定器 :DC Voltmeter1. 準備(1) 、扇風機風通良場所避、通常使用状態置。周囲温度 15 30 、湿度常湿。(2) 電源OFF端子無負荷( 抵抗器接続。

44、)2. 調整(1) 上、基板 VR101 FL, FR, C, SL, SR 及 2ch- 基板 VR401,VR402 反時計方向 ( ) 回切状態。(2) (FRONT-Lch: TP101, FRONT- Rch: TP105, CENTER ch: TP103, SURROUND-Lch: TP102, SURROUND-Rch: TP104, SURROUND-BACK Lch: TP401, SURROUND-BACK Rch: TP402) DC Voltmeter 接続。(3) 電源 AC100V（95 105V 範囲可）接続、電源 ON 。(4) ON 後、次。MASTER

45、VOLUME（音量調節）反時計方向( ) 回、最小状態。SPEAKER（端子）無負荷（、抵抗器接続。 ）MODE : 7CH STEREOFUNCTION : CD(5) 2 分以内 VR101 時計方向 ( ) 回電圧次調整。1.5mV 0.5mV DC(6) 予備調整 10 分後 VR101 回、次電圧設定。2.0mV 0.5mV DC(7) 同方法各可変抵抗調整。19AVR-1708/1508/688/588/488 AVC-1508TROUBLE SHOOTING1. POWER1.1. Power not turn on1.2. Fuse is blownPower not turn

46、 onIs the ON/STANDBY indicator on the front panel flashing red?YESAre there any incomplete con-nections in the connectors con-necting between the variouscircuit boards?NOIs there a short circuit betweenthe speaker terminals and theground?YESCorrect the short circuitbetween the speaker and theground.

47、YESNONOConnect the connectors prop-erly.Check for damage in the poweramplifier circuitry parts andreplace any defective parts.Is the fuse blown?NORefer to Fuse is blownYESDoes the power turn on whenthe POWER switch is turned offthen back on?NOIs a DC 6V voltage being sup-plied from the POWER Bd(CN50

48、5 pins 3 and 4) to themicroprocessor?NOIs a DC 6V voltage output whenthe cord supplying the powerfrom the SUPPLY Bd to themicroprocessor (CN511) isunplugged?NOCheck the parts from IC807 tothe primary circuitry andreplace any defective parts.YESYESYESCheck the primary circuitryparts including the POW

49、ERswitch (for poor contacts, etc.),and replace any defectiveparts.Check the microprocessorperiphery circuitry and replaceany defective parts.Check the circuitry and partsfrom CN511 on the SUPPLYBd to the microprocessor fordamage and short-circuits, andreplace any defective parts.Fuse is blownCheck f

50、or leaks or short circuitsin the primary side parts, andreplace any defective parts.Check for short circuits in therectifier diodes and circuitry ofthe secondary side rectifyingcircuits, and replace any defec-tive parts.Check for short circuits in thepower stabilizer units regula-tor output terminal