Denon-DRACX3-rec-sm维修电路原理图.pdf

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1、SERVICE MANUALMODELDRA-CX3AM-FM STEREO RECEIVERFor Europe modelX0314 V.02 DE/CDM 0703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。Some illustrations using in this service manual areslightly different from the actual set.Please use this service ma

2、nual with referring tothe operating instructions without fail.For purposes of improvement, specifications anddesign are subject to change without notice.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。Denon Brand Company, D&M Holdings Inc.TOKYO, JAPANVer. 2Ver. 2PleaserefertotheMODIFICATION NOTICE.RadioFans.C

3、N 收音机爱 好者资料库2DRA-CX3Please heed the points listed below during servicing and inspection.Heed the cautions!Spots requiring particular attention when servicing, such asthe cabinet, parts, chassis, etc., have cautions indicated onlabels or seals. Be sure to heed these cautions and the cau-tions indicat

4、ed in the handling instructions.Caution concerning electric shock!(1) An AC voltage is impressed on this set, so touching inter-nal metal parts when the set is energized could causeelectric shock. Take care to avoid electric shock, by for ex-ample using an isolating transformer and gloves whenservic

5、ing while the set is energized, unplugging the powercord when replacing parts, etc.(2)There are high voltage parts inside. Handle with extra carewhen the set is energized.Caution concerning disassembly and assembly!Though great care is taken when manufacturing parts fromsheet metal, there may in som

6、e rare cases be burrs on theedges of parts which could cause injury if fingers are movedacross them. Use gloves to protect your hands.Only use designated parts!The sets parts have specific safety properties (fire resis-tance, voltage resistance, etc.). For replacement parts, besure to use parts whic

7、h have the same properties. In particu-lar, for the important safety parts that are marked ! on wiringdiagrams and parts lists, be sure to use the designated parts.Be sure to mount parts and arrange thewires as they were originally!For safety reasons, some parts use tape, tubes or other insu-lating

8、materials, and some parts are mounted away from thesurface of printed circuit boards. Care is also taken with thepositions of the wires inside and clamps are used to keepwires away from heating and high voltage parts, so be sure toset everything back as it was originally.Inspect for safety after ser

9、vicing!Check that all screws, parts and wires removed or discon-nected for servicing have been put back in their original posi-tions, inspect that no parts around the area that has beenserviced have been negatively affected, conduct an insulationcheck on the external metal connectors and between the

10、blades of the power plug, and otherwise check that safety isensured.(Insulation check procedure)Unplug the power cord from the power outlet, disconnect theantenna, plugs, etc., and turn the power switch on. Using a500V insulation resistance tester, check that the insulation re-sistance between the t

11、erminals of the power plug and the ex-ternally exposed metal parts (antenna terminal, headphonesterminal, microphone terminal, input terminal, etc.) is 1M orgreater. If it is less, the set must be inspected and repaired.Concerning important safety partsMany of the electric and structural parts used

12、in the set havespecial safety properties. In most cases these properties aredifficult to distinguish by sight, and using replacement partswith higher ratings (rated power and withstand voltage) doesnot necessarily guarantee that safety performance will be pre-served. Parts with safety properties are

13、 indicated as shownbelow on the wiring diagrams and parts lists is this servicemanual. Be sure to replace them with parts with the designat-ed part number.(1) Schematic diagrams . Indicated by the ! mark.(2) Parts lists . Indicated by the ! mark.Using parts other than the designated partscould resul

14、t in electric shock, fires or otherdangerous situations.SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKBefore returning the unit to the customer, make sure you make either (1) a leakage current check

15、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 the powercord is less than 460 kohms, the unit is defective.CAUTIONCAUTION、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

16、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、使用同特性部品使用。特配線図、部品表 ! 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

17、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 1M 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。安全上特性持部品、配線図、 部品表表示必指定部品番号使用願。(1) 配線図 ! 表示。(2) 部品表 ! 表示。指定部品異使用場合、感電、火災危険生恐。注意注意RadioFans.CN 收音机爱 好者资料库3DRA-CX3CAUTION IN SERVICINGInitializing AM-FM RECEIVERAM-FM RECEIVER i

18、nitialization should be performed when the com and peripheral parts of com are replaced.1. Switch off the unit using the Main units power operation switch. 2. Hold the following the “CD” button and the “PRESET+” but-ton, and turn the Main units power operation switch on.3. Check that the entire disp

19、lay is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.Note:If step 3 does not work, start over from step 1. All user settings will be lost and this factory setting will be recovered when this initialization mode.So

20、make sure to memorize your setting for restoring after the initialization.時注意事項AM-FM 初期化周辺部品等交換場合、AM-FM 初期化行下。1.電源 OFF 。2.CD PRESET+ 同時押、電源 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。4DRA-CX3TROUBLESHOOTING 5DRA-CX3BLOCK & LEVEL DIAGRAM6DRA-CX3WIRING DIAGRAM

21、7DRA-CX3SEMICONDUCTORS / 半導体一覧表Only major semiconductors are shown, general semiconductors etc. are omitted to list.主半導体記載。汎用半導体記載省略。ICsM3062LFGPGP (IC501)BLOCK DIAGRAM 123456789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2526272829303132333435363738394041424344454647484950515253545556575859606162

22、63646566676869707172737475767778798081828384858687888990919293949596979899100P00/AN00/D0P01/AN01/D1P02/AN02/D2P03/AN03/D3P04/AN04/D4P05/AN05/D5P06/AN06/D6P07/AN07/D7P10/D8P11/D9P12/D10P13/D11P14/D12VREFAVSSVCC1XINXOUTVSSRESETCNVssP87/XCINP86/XCOUTBYTEP20/AN20/A0(/D0/-)P21/AN21/A1(/D1/D0)P22/AN22/A2(

23、/D2/D1)P23/AN23/A3(/D3/D2)P24/AN24/A4(/D4/D3)P25/AN25/A5(/D5/D4)P26/AN26/A6(/D6/D5)P27/AN27/A7(/D7/D6)P30/A8(/-/D7)P31/A9P32/A10P33/A11P34/A12P35/A13P36/A14P37/A15P40/A16P41/A17P42/A18P43/A19P74/TA2OUT/WP76/TA3OUTP56/ALEP77/TA3INP55/HOLDP54/HLDAP53/BCLKP52/RDVCC2VSSP57/RDY/CLKOUTP45/CS1P46/CS2P47/CS

24、3AVccP63/TXD0/SDA0P65/CLK1P66/RxD1/SCL1P67/TXD1/SDA1P61/CLK0P62/RxD0/SCL0P100/AN0P101/AN1P102/AN2P103/AN3P93/DA0/TB3INP94/DA1/TB4INP95/ANEX0/CLK4P96/ANEX1/SOUT4P91/TB1IN/SIN3P92/TB2IN/SOUT3P80/TA4OUT/UP60/CTS0/RTS0P64/CTS1/RTS1/CTS0/CLKS1P82/INT0P83/INT1P85/NMIP97/ADTRG/SIN4P44/CS0P50/WRL/WRP51/WRH/

25、BHEP90/TB0IN/CLK3P84/INT2P72/CLK2/TA1OUT/VP71/RxD2/SCL2/TA0IN/TB5IN(Note)P70/TXD2/SDA2/TA0OUT(Note)P75/TA2IN/WP73/CTS2/RTS2/TA1IN/VP15/D13/INT3P16/D14/INT4P17/D15/INT5P107/AN7/KI3P106/AN6/KI2P105/AN5/KI1P104/AN4/KI0P81/TA4IN/UM16C/62P GroupTimer (16-bit)Output (timer A): 5Input (timer B): 6Internal

26、peripheral functionsWatchdog timer(15 bits)DMAC(2 channels)D-A converter(8 bits X 2 channels)A-D converter(10 bitsX8 channelsExpandable up to 26 channels)UART orclock synchronous serial I/O(8 bitsX3 channels)System clock generatorXIN-XOUTXCIN-XCOUTPLL frequency synthesizerRing oscillatorM16C/60 seri

27、es16-bit CPU corePort P08Port P18Port P28Port P38Port P48Port P58Port P68CRC arithmetic circuit (CCITT )(Polynomial : X16+X12+X5+1)Memory8788Port P10Port P9Port P8Port P7Port P85ROM(Note 1)RAM(Note 2)Note 1: ROM size depends on microcomputer type.Note 2: RAM size depends on microcomputer type.Note 3

28、: Ports P11 to P14 exist only in 128-pin version.Clock synchronous serial I/O(8 bitsX2 channels)R0LR0HR1HR1LR2R3SBFLGUSPISPINTBPCMultiplierPort P118Port P142Port P128Port P138Three-phase motorcontrol circuitA0A1FB(Note 3)(Note 3)(Note 3)(Note 3)8DRA-CX3Terminal Function Pin No.Port NameI/OInitialFun

29、ction1NCO-Not Used.2FL_RESETOLReset output to driver built into FL display tube. (Low pulse of a microsecond or more .)3TONE_DATAOLData output to TC9184AP. (20bit)4TONE_STROBEOLStrobe output to TC9184AP.5TONE_CLOCKOLClock output to TC9184AP. (below 500kHz)6BYTEI-External data bus width switching inp

30、ut. (GND : Single chip mode)7CNVSSI-Processor mode switching input. (GND : Single chip mode, PULL DOWN) (Use for updating program.)8NCOLNot Used.9NCOLNot Used.10RESETI-Reset input.11XOUTO-Oscillator output. (16 MHz)12VSSI-GND.13XINI-Oscillator output. (16 MHz)14VCC1I-Power supply.15NCI-Not used. (PU

31、LL UP)16O.CURRENT/O.VOLTAGEI-Overcurrent / overvoltage detection input of power supply unit. (Active : Low edge)17AC OFFI-Power failure detection input. 18DBRXDI-Not used. (GND)19OSCOLOscillation frequency control output of power supply unit.20H/P_SWI-Headphones connected/disconnected detection inpu

32、t.21ENC_BI-Rotary encoder B terminal input. 22ENC_AI-Rotary encoder A terminal input. 23FL_CSOLChip selection output to driver built into FL display tube.24LED_OOLPower LED control signal output. ( Orange, STANDBY, H:turn on)25LED_ROLPower LED control signal output. (Red, POWER ON, H:turn on)26DABCL

33、KOLNot used.27DABRXDI-Not used. (GND)28DABTXDOLNot used.29IPOD_TXOLData output to i-Pod. (Use even when updating program.)30IPOD_RXI-Data input from i-Pod. (Use even when updating program.)31NCOLNot used.32NCOLNot used. (Terminal for RDS test)33S1_DINI-GND. (DAB ready communication input)34S1_DOUTOL

34、Not used. (DAB ready communication output)35NCOLNot used.36NCOLNot used.37NCOLNot used.38NCOLNot used.39EPMOLUse for updating program.40E2P_CLKOLClock output to EEPROM.41E2P_DOI-Data input from EEPROM.42E2P_DIOLData output to EEPROM.43E2P_CSOLChip selection output to EEPROM.44CEOLUse for updating pr

35、ogram.45NCOLNot used.46NCOLNot used.47PWB_CHECKI-PWB checking mode input.48PWB_CHECKI-PWB checking mode input.49PWB_CHECKI-PWB checking mode input.50PWB_CHECKI-PWB checking mode input.51NCOLNot used.52NCOLNot used.53NCOLNot used.54PHONOOLOutput for input selection relay. (H : select PHONE)55CDOLOutp

36、ut for input selection relay. (H : select CD)56LINE1OLOutput for input selection relay. (H : select LINE1)57LINE2OLOutput for input selection relay. (H : select LINE2)9DRA-CX358LINE3OLOutput for input selection relay. (H : select LINE3)59TU_POWEROLTuner power ON/OFF control. (H : Tuner ON)60VCCI-Pow

37、er supply.61TUNEROLOutput for input selection relay. (H : select TUNER)62VSSI-GND.63RDS_RSTOLReset output to RDS IC.64STEREOI-Tuner stereo signal detection input.65TUNEDI-Tuner reception detection input.66T.MUTEOLTuner MUTE output.67RDS_CEOLChip enable output to tuner RDS IC.68RDS_DATAOLData output

38、to tuner RDS IC.69RDS_CLKOLClock output to tuner RDS IC.70RDS_DOI-Data input from tuner RDS IC.71Not usedI-GND. (Not used)72PROTECTI-Power Amp. Error detection input.73REMOTEI-IR remote controller input.74IPOD_CONNECTI-i-Pod connected/disconnected detection input. (H : Connected)75IPOD_POWEROLi-Pod

39、power supply ON/OFF control output.76ENAOLSignal output to stop oscillator of Power Amp.77SP_MUTEOLSP MUTE output. (H: MUTE ON)78DIRECTOLSOURCE DIRECT RELAY control output.79H/P_MUTEOLHeadphone MUTE output. (H: MUTE ON)80AC_RELAYOLPower ON/OFF control. (H : Tuner ON)81NCOLNot used.82RECOLREC MUTE ou

40、tput. (H: MUTE ON)83VOL_DATAOLData output to TC94A32FG. (24bit)84VOL_CLOCKOLClock output to TC94A32FG. (below 1MHz)85VOL_STROBEOLStrobe output to TC94A32FG.86NCOLNot used.87THERMOI-Power Amp. Overheating detection input.88USAOLNot Used.89EUROI-Product destination selection input. (JAPAN : L, EURO :

41、H)90TEMPI-Power unit overheating detection input.91FREQI-TUNERs skip frequency switching input.92RDSI-RDS YES/NO selection input. (H : YES, L : NO)93KEY0I(AD)-Main units operating button detection input.94AVSSI-GND for AD converter.95KEY1I(AD)-Main units operating button detection input.96VREFI-Refe

42、rence voltage input for AD converter and DA converter.97AVCCI-Power supply of AD converter.98NCOLNot used.99FL_DAOLSerial data output to driver built into FL display tube.100FL_CLKOLSerial clock output to driver built into FL display tube.Pin No.Port NameI/OInitialFunction10DRA-CX3DA428440E-E (IC702

43、)BLOCK DIAGRAM Control chip44 FB2Driver chip1Driver chip2VDD 22AGND1,9,12,21VSS 2,11,20IN1- 17AGND1- 16ENA4IN2+ 15AGND2+ 14TEST 19DCG7THM3OCM6VDCK 10InvertingNon-invertingVSCK842 ZB223 FB125 ZB128 VD132 PWMFB133 SUB41 PWMFB239 VS235 VDR237 VD2HighdriveLowdriveCurrentdetectCurrentdetectRecieverDeadTi

44、meLevelshiftHighdriveLowdriveCurrentdetectCurrentdetectRecieverDeadTimeLevelshiftCOM/MECCControl ch1ComparatorCOM/MECCControl ch2ComparatorVoltagecheckThermalWarningCurrent Prot / HF ProtRec.SoftLimitNTC36 VD226 VDR131 PWM127 VD129 VS130 VS134 VS40 PWM238 VS2NC13,18,24,43Rec.SoftLimitCurrent Prot /

45、HF ProtShnchroCircuitSYN511DRA-CX3Terminl Function Pin No.Pin NameFunction1AGNDAnalog ground for control chip power supply. 2VSSNegative power supply for control chip (-5V). 3THMThermal MonitorError signal of open collector output “L” for two conditions. 1. Over temperature limitation. 2. Over tempe

46、rature warning. By connecting to the ENA pin, thermal shutdown is set. 4ENABi-direction input/output. The input “H” enables to start switching and the input “L” disables. Input is including hysteresis for glitch free enable of the system. When the protection circuit detects the over voltage conditio

47、n, the open collector output turns on. 5SYNThe switching frequency can be synchronized with frequency of this pin signal to avoid the influencefor AM radio tuner. Normal condition is “L”. 6OCMOver Current MonitorError signal of open collector output “L” for two conditions. 1. Over current limitation

48、. 2. For monitoring the state of control and average voltage across the zobel resistor in case of of-limitconditions. 7DCGThis high impedance output generates a current in case of over voltage condition on the power stagevoltage (VD/VS). This current is designed to turn-on a set of discharge transis

49、tors. 8VSCKThis high impedance input for monitoring negative power stage. This monitoring controls the soft clipping circuit and the over voltage shutdown. 9AGNDAnalog ground for control chip power supply. 10VDCKThis high impedance input for monitoring positive power stage. This monitoring controls

50、the soft clipping circuit and the over voltage shutdown. 11VSS Negative power supply for control chip (-5V). 12AGNDAnalog ground for control chip power supply. 13NC14AGND2Input reference for channel 2. This is true inverting low impedance (1kohm) input for avoiding ground loop noise. 15IN2+High impe