Denon-DRA37-rec-sm维修电路原理图.pdf

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1、SERVICE MANUALAM-FM STEREO RECEIVERMODELDRA-397DRA-297DRA-37TOKYO, JAPANDenon Brand Company, D&M Holdings Inc.X0282V.02 DE/CDM 0701Some illustrations using in this service manual areslightly different from the actual set.Please use this service manual with referring to theoperating instructions with

2、out fail.For purposes of improvement, specifications anddesign are subject to change without notice.本文中使用、説明都合上現物多少異場合。修理際、必取扱説明書参照上、作業行。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。注意For U.S.A. & Canada modelVer. 2Please refer to theMODIFICATION NOTI

3、CE.RadioFans.CN 收音机爱 好者资料库2DRA-397/297/37Please 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

4、the cau-tions indicated 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

5、and gloves whenservicing 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 me

6、tal, there may in some 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, bes

7、ure to use parts which 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

8、or other insu-lating 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

9、 for safety after servicing!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 conne

10、ctors and between theblades 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-s

11、istance between the terminals 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 s

12、tructural parts used 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

13、safety properties are 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 design

14、ated partscould result 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 l

15、eakage 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 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

16、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

17、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、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-397/297/37ADJUSTMENTIdling CurrentRequired measur

18、ement 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 switch)OFF SPEAKER (Speaker terminal)No load(Do not connect speaker, dummy resistor, et

19、c.)2. Adjustment(1) Remove top cover and set VR501FL, VR501FR on MAIN Unit at fully counterclockwise ( ) position.(2) Connect DC Voltmeter to test points (FRONT-Lch: TP501, FRONT-Rch: TP502).(3) Connect power cord to AC Line, and turn power switch ON.(4) Presetting.MASTER VOLUME: - counterclockwise

20、( min.)MODE: TONE DEFEATFUNCTION: CD(5) Within 2 minutes after the power on, turn VR501FL 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 VR501FL to set the voltage to 2.0 mV 0.5 mV DC.(7) Adjust the Variable Resistors of other cha

21、nnels in the same way.VR501FLTP501TP502VR501FRF LchF RchDC Voltmeter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。)2. 調整(1) 上、基板 VR501FL, VR501FR 反時計方向 ( ) 回切状態。(2) (FRONT-Lch: TP501, FRONT- Rch: TP502) DC Voltmeter 接続。(3) 電源 AC100V（95 105V 範囲可）接続、電源 O

22、N 。(4) ON 後、次。MASTER 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 : TONE DEFEATFUNCTION : CD(5) 2 分以内 VR501FL 時計方向 ( ) 回電圧次調整。1.5mV 0.5mV DC(6) 予備調整 10 分後 VR501FL 回、次電圧設定。2.0mV 0.5mV DC(7) 同方法各可変抵抗調整。4DRA-397/297/37BLOCK DIAGRAMDRA-397 model5DRA-397/297/37DRA-297/37 model6DRA-397/297/37L

23、EVEL DIAGRAM7DRA-397/297/37SEMICONDUCTORSOnly 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。 1. ICsM30624FGPFG (IC401) FRONT P.W.B.8DRA-397/297/37M30624FGPFG Terminal FunctionPIN No.Port FunctionPort NameI/OFunction1P96SIRIUS_TXOO/LSIRIUS data trans

24、mission 2P95SIRIUS MUTEOO/LSIRIUS MUTE control3P94(HD CE)OO/LHD Radio enable output4P93MULT3 SW OO/LZONE3 output, HPFcontrol5P92HD Radio TX/(SDA)OO/LHD Radio data transmission6P91HD Radio RX/(SCL)IIHD Radio Data reception7P90(HD CLK)OO/LHD Radio clock output8BYTEI-Ext. data bus bit width switching9C

25、NVSSI-Processor mode switching 10P87, XCIN(HD RESET)OO/LHD Radio reset output 11P86, XCOUTFLT_RESETOO/LFLT reset output 12/RESETI-Hard reset13XOUTO-Oscillator connection 14VSSI-GND15XINI-Oscillator connection 16VCC1I-5V17P85NMII-NMI interruption input 18P84, /INT2RS232C_TXIIRS232C signal detection 1

26、9P83, /INT1REMOCONIIRemote control input 20P82, /INT0PROTECTIONIIUnusual operation detection 21P81FLT_CLKOO/LFLT clock output 22P80FLT_DATAOO/LFLT data output23P77FLT_CE1OO/LFLT chip select output24P76SPK_RLY_AOO/LSpeaker A Relay control 25P75CPU_5V_SWOO/LCPU 5V control 26P74SPK_RLY_BOO/LSpeaker B R

27、elay control 27P73(NC)O/L28P72, CLK2iPod_DETIIiPod connection detection 29P71, RXD2/SCL2iPod_RXIIiPod data reception30P70, TXD2/SDA2iPod_TXOO/LiPod data transmission31P67, TXD1/SDA1RS232C_TXOO/LRS232C data reception32P66, RXD1/SCL1RS232C_RXIIRS232C data reception 33P65, CLK1PLL_DIIIPLL data input34P

28、64PLL_DO/XM-DAC_DOOO/LPLL/XM-DAC data output35P63, TxD0/SDA0XM_TXOO/LXM data transmission36P62, RXD0/SCL0XM_RXIIXM data reception37P61, CLK0PLL_CLK/XM-DAC_CLKOO/LPLL/XM-DAC clock output38P60PLL_CEOO/LPLL enable output39P57/TUNEDIITUNED detection40P56/STEREOIISTEREO broadcast detection41P55RS232C_UPD

29、ATE_EPM42P54VOL_UPIIVolume encoder input43P53VOL_DOWNIIVolume encoder input44P52SELECT_DOWNIISelect encoder input45P51SELECT_UPIISelect encoder input46P50RS232C_UPDATE_CEOO/L47P47DC TRIGGER_2ONOO/LTrigger Out2 ON/OFF control48P46FUNCTION_UPIIFunction encoder input49P45TUNER MUTEOO/LTUNER MUTE contro

30、l50P44E2PROM_SCLOO/LE2P Clock output51P43E2PROM_SDAI/OO/LE2PROM data transmission and reception52P42ZONE3_MUTEOO/LZONE3 MUTE control53P41ZONE2_MUTEOO/LZONE2 MUTE control54P40STBY LED_REDOO/LStandby LED(R) controlP-ONStandby9DRA-397/297/3755P37HD Radio MUTEOO/LHD Radio MUTE control56P36DC TRIGGER 1OO

31、/LTrigger Out1 ON/OFF control57P35H/P RELAYOO/LH/P Relay control58P34SW_MUTEOO/LSW MUTE control59P33VIDEO OFFOO/LVIDEO Reg control60P32HD Radio DETIIHD Radio Installing detection61P31HD Radio P/EOO/LHD Radio power supply control62VCC2I-5V63P30(NC)64VSSI-GND65P27XM_DBPOWEROO/LXM Reg control66P26XM_DI

32、C_RESETOO/LXM DIC reset output67P25XM_DAC_PDNOO/LXM DAC reset reset output68P24XM_COMMANDOO/LXM DIC CBM output69P23XM_REQIIXM DIC Interrupt request70P22H/P DETIIH/P connection detection71P21POWER RELAYOO/LPOWER RELAY control72P20FUNCTION_DOWNIIFunction encoder input73P17, /INT5POWER DOWNIICPU 5.6V d

33、etection 74P16, /INT4LOUDNESS ONOO/LLOUDNESS ON/OFF control75P15, /INT3POWERIIPOWER Key input detection 76P14MULT2 SWOO/LZONE3 output, HPF control77P13STBY_LED_GREENOO/LStandby LED(G) control78P12NJW1197W_LATCHOO/LNJW1197 latch output79P11NJW1197W_CLKOO/LNJW1197 Clock output80P10NJW1197W_DATAOO/LNJW

34、1197 data output81P07MAIN_MUTEOO/LMAIN MUTE control82P06VIDEO_AOO/LVIDEO output control83P05VIDEO_BOO/LVIDEO output control84P04VIDEO_COO/LVIDEO output control85P03VIDEO_DOO/LVIDEO output control86P02VIDEO_EOO/LVIDEO output control87P01ZONE2_VIDEO_MUTEOO/LZONE2 VIDEO MUTE control88P00ZONE3_VIDEO_MUT

35、EOO/LZONE3 VIDEO MUTE control89P107(NC)90P106, AN6KEY_IN1IIKey input91P105, AN5KEY_IN2IIKey input92P104, AN4KEY_IN3IIKey input93P103(NC)94P102SIRIUS P/EOO/LSIRIUS enable output95P101XM MUTEOO/LXM MUTE control96AVSSI-GND97P100XM_DACNSOO/LXM DAC chip select input98VREFI-standard voltage input99AVCCI-5

36、V100P97, RXD4/SCL4/STXD4SIRIUS_RXIISIRIUS data receptionPIN No.Port FunctionPort NameI/OFunctionP-ONStandby10DRA-397/297/37NJW1197 (IC101) INPUT P.W.B.BLOCK DIAGRAMPIN FUNCTION130315080811005111DRA-397/297/37NJW1197 Terminal Function No. SYMBOL FUNCTION No. SYMBOL FUNCTION 1 ROUT Rch output 51 DCR_I

37、N Multi-channel selector Rch input2 COUT Cch output 52 DCR_OUT Input selector Rch output 3 LSOUT LSch output 53 GND Ground 4 RSOUT RSch output 54 DCL_IN Multi-channel selector Lch input5 LBOUT LBch output 55 DCL_OUT Input selector Lch output 6 RBOUT RBch output 56 GND Ground 7 SWOUT SWch output 57 R

38、EC_B1R Input selector Rch REC output B1 8 GND Ground 58 REC_B1L Input selector Lch REC output B1 9 FIL_BL2 Lch Bass filter terminal 2 59 REC_A4R Input selector Rch REC output A4 10 FIL_BL1 Lch Bass filter terminal 1 60 REC_A4L Input selector Lch REC output A411 FIL_TL Lch Treble filter terminal 61 R

39、EC_A3R Input selector Rch REC output A3 12 TCAP Switching noise rejection capacitor 62 REC_A3L Input selector Lch REC output A3 13 FIL_BR2 Rch Bass filter terminal 2 63 REC_A2R Input selector Rch REC output A2 14 FIL_BR1 Rch Bass filter terminal 1 64 REC_A2L Input selector Lch REC output A2 15 FIL_T

40、R Rch Treble filter terminal 65 REC_A1R Input selector Rch REC output A1 16 V+ + Power supply voltage input 66 REC_A1L Input selector Lch REC output A1 17ADRChip address select input67 VDDOUT Internal Digital +Power Supply Output 18 V- - Power supply voltage input 68 DATA Control data signal input 1

41、9 L1IN Input selector Lch input 1 69 CLOCK Clock signal input 20 DCCAP_SW Switching noise rejection capacitor 70 LATCH Latch signal input 21 R1IN Input selector Rch input 1 71MUTEExternal Mute control22 DCCAP_RB Switching noise rejection capacitor 72 FL+ Input selector gain control Lch no-inverted o

42、utput 23 L2IN Input selector Lch input 2 73 FL- Input selector gain control Lch inverted output 24 DCCAP_LB Switching noise rejection capacitor 74 FR+ Input selector gain control Rch no-inverted output 25 R2IN Input selector Rch input 2 75 FR- Input selector gain control Rch inverted output 26 DCCAP

43、_RS Switching noise rejection capacitor 76 GND Ground 27 L3IN Input selector Lch input 3 77 LSCIN Multi-channel LSch input C 28 DCCAP_LS Switching noise rejection capacitor 78 RSCIN Multi-channel RSch input C 29 R3IN Input selector Rch input 3 79 LBCIN Multi-channel LBch input C 30 DCCAP_C Switching

44、 noise rejection capacitor 80 RBCIN Multi-channel RBch input C 31 L4IN Input selector Lch input 4 81 GND Ground 32 DCCAP_R Switching noise rejection capacitor 82 LAIN Multi-channel Lch input A 33 R4IN Input selector Rch input 4 83 RAIN Multi-channel Rch input A 34 DCCAP_L Switching noise rejection c

45、apacitor 84 CAIN Multi-channel Cch input A 35 L5IN Input selector Lch input 5 85 LSAIN Multi-channel LSch input A 36 GND Ground 86 RSAIN Multi-channel RSch input A 37 R5IN Input selector Rch input 5 87 LBAIN Multi-channel LBch input A 38 GND Ground 88 RBAIN Multi-channel RBch input A 39 L6IN Input s

46、elector Lch input 6 89 SWAIN Multi-channel SWch input A 40 L9IN Input selector Lch input 9 90 GND Ground 41 R6IN Input selector Rch input 6 91 LBIN Multi-channel Lch input B 42 R9IN Input selector Rch input 9 92 RBIN Multi-channel Rch input B 43 L7IN Input selector Lch input 7 93 CBIN Multi-channel

47、Cch input B 44 L10IN Input selector Lch input 10 94 LSBIN Multi-channel LSch input B 45 R7IN Input selector Rch input 7 95 RSBIN Multi-channel RSch input B 46 R10IN Input selector Rch input 10 96 LBBIN Multi-channel LBch input B 47 L8IN Input selector Lch input 8 97 RBBIN Multi-channel RBch input B

48、48 L11IN Input selector Lch input 11 98 SWBIN Multi-channel SWch input B 49 R8IN Input selector Rch input 8 99 GND Ground 50 R11IN Input selector Rch input 11 100 LOUT Lch output 12DRA-397/297/37 F2602-1 XMDTIC (IC203) XM-READY P.W.B.Functionnal Description13DRA-397/297/37 F2602-1 XMDTIC Pin Descrip

49、tions14DRA-397/297/37BA7626F (IC601) MAIN P.W.B. Truth tableCDEVOUT1LLHLIN2LHIN3HHLIN4HHHIN5ABELLIN1HLIN2LHIN3HHLIN4HHHIN5CDEVOUT2LLIN1HLLHIN3HHLIN4HHHIN5Note 1:indicates dont care (H or L).Monitor OUTBlock diagramIN5IN1CTL AVCCVCCIN2CTL BVOUT2GNDGNDIN4CTL ECTL D16151413121110921345678IN3CTL Clogicl

50、ogic6dB6dBMonitor OUT15DRA-397/297/37AK4385 (IC 207) XM-READY P.W.B.SN74LV08A (IC 204) XM-READY P.W.B. SN74HCT08 (IC 205, 206, 211) XM-READY 1MCLKLRCKBICKCSNCCLKCDTITopView2345678DZFLDZFRVSSVDDAOUTL+AOUTL-AOUTR+AOUTR-161514131211109PDNSDTINo.Pin NameI/OFunction1MCLKIMaster Clock Input PinAn external