Denon-DRA297-rec-sm维修电路原理图.pdf

《Denon-DRA297-rec-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Denon-DRA297-rec-sm维修电路原理图.pdf（62页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL AM-FM STEREO RECEIVER MODELDRA-397 DRA-297 DRA-37 TOKYO, JAPAN Denon Brand Company, D&M Holdings Inc. X0282V.02 DE/CDM 0701 Some illustrations using in this service manual are slightly different from the actual set. Please use this service manual with referring to the operating instru

2、ctions without fail. For purposes of improvement, specifications and design 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 model Ver. 2 Plea

3、se refer to the MODIFICATION NOTICE. RadioFans.CN 收音机爱 好者资料库 2 DRA-397/297/37 Please heed the points listed below during servicing and inspection. Heed the cautions! Spots requiring particular attention when servicing, such as the cabinet, parts, chassis, etc., have cautions indicated on labels or s

4、eals. Be sure to heed these cautions and 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 cause electric shock. Take care to avoid electric shock, b

5、y for ex- ample using an isolating transformer and gloves when servicing while the set is energized, unplugging the power cord when replacing parts, etc. (2)There are high voltage parts inside. Handle with extra care when the set is energized. Caution concerning disassembly and assembly! Though grea

6、t care is taken when manufacturing parts from sheet metal, there may in some rare cases be burrs on the edges of parts which could cause injury if fingers are moved across them. Use gloves to protect your hands. Only use designated parts! The sets parts have specific safety properties (fire resis- t

7、ance, voltage resistance, etc.). For replacement parts, be sure to use parts which have the same properties. In particu- lar, for the important safety parts that are marked ! on wiring diagrams and parts lists, be sure to use the designated parts. Be sure to mount parts and arrange the wires as they

8、 were originally! For safety reasons, some parts use tape, tubes or other insu- lating materials, and some parts are mounted away from the surface of printed circuit boards. Care is also taken with the positions of the wires inside and clamps are used to keep wires away from heating and high voltage

9、 parts, so be 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 posi- tions, inspect that no parts around the area that has been serviced have been

10、negatively affected, conduct an insulation check on the external metal connectors and between the blades of the power plug, and otherwise check that safety is ensured. (Insulation check procedure) Unplug the power cord from the power outlet, disconnect the antenna, plugs, etc., and turn the power sw

11、itch on. Using a 500V insulation resistance tester, check that the insulation re- sistance between the terminals of the power plug and the ex- ternally exposed metal parts (antenna terminal, headphones terminal, microphone terminal, input terminal, etc.) is 1M or greater. If it is less, the set must

12、 be inspected and repaired. Concerning important safety parts Many of the electric and structural parts used in the set have special safety properties. In most cases these properties are difficult to distinguish by sight, and using replacement parts with higher ratings (rated power and withstand vol

13、tage) does not necessarily guarantee that safety performance will be pre- served. Parts with safety properties are indicated as shown below on the wiring diagrams and parts lists is this service manual. Be sure to replace them with parts with the designat- ed part number. (1) Schematic diagrams . In

14、dicated by the ! mark. (2) Parts lists . Indicated by the ! mark. Using parts other than the designated parts could result in electric shock, fires or other dangerous situations. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service techn

15、ician. 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 k

16、ohms, the unit is defective. CAUTION CAUTION 、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 同特性部品使用

17、。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 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 、

18、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 3 DRA-397/297/37 ADJUSTMENT Idling Current Required measurement equipment: DC Voltmeter 1. Preparation (1) Avoid direct blow from an air conditioner or an electric fan, and adjust the

19、 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.) 2. Adjustment (1) Remove top cover and set VR501FL, VR501FR on MAIN Unit at fully counterclockwise ( ) position. (2)

20、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 ( min.) MODE: TONE DEFEAT FUNCTION: CD (5) Within 2 minutes after the power on, turn VR501FL clock- wise ( ) to adj

21、ust 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 channels in the same way. VR501FL TP501 TP502 VR501FR F Lch F Rch DC Voltmeter 調整 電流調整 調整必要測定器 :DC Voltmeter 1.

22、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 ON 。 (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 : T

23、ONE DEFEAT FUNCTION : 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。 4 DRA-397/297/37 BLOCK DIAGRAM DRA-397 model 5 DRA-397/297/37 DRA-297/37 model 6 DRA-397/297/37 LEVEL DIAGRAM 7 DRA-397/297/37 SEMICONDUCTORS Only major semicon

24、ductors 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. ICs M30624FGPFG (IC401) FRONT P.W.B. 8 DRA-397/297/37 M30624FGPFG Terminal Function PIN No.Port FunctionPort Name I/O Function 1P96SIRIUS_TXOO/LSIRIUS data transmission 2P95SIRIUS MUTEOO/LSIRIUS MUTE control 3P9

25、4(HD CE)OO/LHD Radio enable output 4P93MULT3 SW OO/LZONE3 output, HPFcontrol 5P92HD Radio TX/(SDA)OO/LHD Radio data transmission 6P91HD Radio RX/(SCL)IIHD Radio Data reception 7P90(HD CLK)OO/LHD Radio clock output 8BYTEI-Ext. data bus bit width switching 9CNVSSI-Processor mode switching 10P87, XCIN(

26、HD RESET)OO/LHD Radio reset output 11P86, XCOUTFLT_RESETOO/LFLT reset output 12/RESETI-Hard reset 13XOUTO-Oscillator connection 14VSSI-GND 15XINI-Oscillator connection 16VCC1I-5V 17P85NMII-NMI interruption input 18P84, /INT2RS232C_TXIIRS232C signal detection 19P83, /INT1REMOCONIIRemote control input

27、 20P82, /INT0PROTECTIONIIUnusual operation detection 21P81FLT_CLKOO/LFLT clock output 22P80FLT_DATAOO/LFLT data output 23P77FLT_CE1OO/LFLT chip select output 24P76SPK_RLY_AOO/LSpeaker A Relay control 25P75CPU_5V_SWOO/LCPU 5V control 26P74SPK_RLY_BOO/LSpeaker B Relay control 27P73(NC)O/L 28P72, CLK2i

28、Pod_DETIIiPod connection detection 29P71, RXD2/SCL2iPod_RXIIiPod data reception 30P70, TXD2/SDA2iPod_TXOO/LiPod data transmission 31P67, TXD1/SDA1RS232C_TXOO/LRS232C data reception 32P66, RXD1/SCL1RS232C_RXIIRS232C data reception 33P65, CLK1PLL_DIIIPLL data input 34P64PLL_DO/XM-DAC_DOOO/LPLL/XM-DAC

29、data output 35P63, TxD0/SDA0XM_TXOO/LXM data transmission 36P62, RXD0/SCL0XM_RXIIXM data reception 37P61, CLK0PLL_CLK/XM-DAC_CLKOO/LPLL/XM-DAC clock output 38P60PLL_CEOO/LPLL enable output 39P57/TUNEDIITUNED detection 40P56/STEREOIISTEREO broadcast detection 41P55RS232C_UPDATE_EPM 42P54VOL_UPIIVolum

30、e encoder input 43P53VOL_DOWNIIVolume encoder input 44P52SELECT_DOWNIISelect encoder input 45P51SELECT_UPIISelect encoder input 46P50RS232C_UPDATE_CEOO/L 47P47DC TRIGGER_2ONOO/LTrigger Out2 ON/OFF control 48P46FUNCTION_UPIIFunction encoder input 49P45TUNER MUTEOO/LTUNER MUTE control 50P44E2PROM_SCLO

31、O/LE2P Clock output 51P43E2PROM_SDAI/OO/LE2PROM data transmission and reception 52P42ZONE3_MUTEOO/LZONE3 MUTE control 53P41ZONE2_MUTEOO/LZONE2 MUTE control 54P40STBY LED_REDOO/LStandby LED(R) control P-ONStandby 9 DRA-397/297/37 55P37HD Radio MUTEOO/LHD Radio MUTE control 56P36DC TRIGGER 1OO/LTrigge

32、r Out1 ON/OFF control 57P35H/P RELAYOO/LH/P Relay control 58P34SW_MUTEOO/LSW MUTE control 59P33VIDEO OFFOO/LVIDEO Reg control 60P32HD Radio DETIIHD Radio Installing detection 61P31HD Radio P/EOO/LHD Radio power supply control 62VCC2I-5V 63P30(NC) 64VSSI-GND 65P27XM_DBPOWEROO/LXM Reg control 66P26XM_

33、DIC_RESETOO/LXM DIC reset output 67P25XM_DAC_PDNOO/LXM DAC reset reset output 68P24XM_COMMANDOO/LXM DIC CBM output 69P23XM_REQIIXM DIC Interrupt request 70P22H/P DETIIH/P connection detection 71P21POWER RELAYOO/LPOWER RELAY control 72P20FUNCTION_DOWNIIFunction encoder input 73P17, /INT5POWER DOWNIIC

34、PU 5.6V detection 74P16, /INT4LOUDNESS ONOO/LLOUDNESS ON/OFF control 75P15, /INT3POWERIIPOWER Key input detection 76P14MULT2 SWOO/LZONE3 output, HPF control 77P13STBY_LED_GREENOO/LStandby LED(G) control 78P12NJW1197W_LATCHOO/LNJW1197 latch output 79P11NJW1197W_CLKOO/LNJW1197 Clock output 80P10NJW119

35、7W_DATAOO/LNJW1197 data output 81P07MAIN_MUTEOO/LMAIN MUTE control 82P06VIDEO_AOO/LVIDEO output control 83P05VIDEO_BOO/LVIDEO output control 84P04VIDEO_COO/LVIDEO output control 85P03VIDEO_DOO/LVIDEO output control 86P02VIDEO_EOO/LVIDEO output control 87P01ZONE2_VIDEO_MUTEOO/LZONE2 VIDEO MUTE contro

36、l 88P00ZONE3_VIDEO_MUTEOO/LZONE3 VIDEO MUTE control 89P107(NC) 90P106, AN6KEY_IN1IIKey input 91P105, AN5KEY_IN2IIKey input 92P104, AN4KEY_IN3IIKey input 93P103(NC) 94P102SIRIUS P/EOO/LSIRIUS enable output 95P101XM MUTEOO/LXM MUTE control 96AVSSI-GND 97P100XM_DACNSOO/LXM DAC chip select input 98VREFI

37、-standard voltage input 99AVCCI-5V 100P97, RXD4/SCL4/STXD4SIRIUS_RXIISIRIUS data reception PIN No.Port FunctionPort Name I/O Function P-ONStandby 10 DRA-397/297/37 NJW1197 (IC101) INPUT P.W.B. BLOCK DIAGRAM PIN FUNCTION 1 30 31 50 80 81 100 51 11 DRA-397/297/37 NJW1197 Terminal Function No. SYMBOL F

38、UNCTION No. SYMBOL FUNCTION 1 ROUT Rch output 51 DCR_IN Multi-channel selector Rch input 2 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 input 5 LBOUT LBch output 55 DCL_OUT Input selector Lch output 6

39、RBOUT RBch output 56 GND Ground 7 SWOUT SWch output 57 REC_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 Lc

40、h REC output A4 11 FIL_TL Lch Treble filter terminal 61 REC_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 termin

41、al 1 64 REC_A2L Input selector Lch REC output A2 15 FIL_TR 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

42、 supply voltage input 68 DATA Control data signal input 19 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 control 22 DCCAP_RB Switching noise rejection capa

43、citor 72 FL+ Input selector gain control Lch no-inverted output 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

44、- Input selector gain control Rch inverted output 26 DCCAP_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

45、3 79 LBCIN Multi-channel LBch input C 30 DCCAP_C Switching 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-

46、channel Rch input A 34 DCCAP_L Switching noise rejection capacitor 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

47、Ground 88 RBAIN Multi-channel RBch input A 39 L6IN Input selector 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

48、 43 L7IN Input selector Lch input 7 93 CBIN Multi-channel 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

49、 selector Lch input 8 97 RBBIN Multi-channel RBch input B 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 12 DRA-397/297/37 F2602-1 XMDTIC (IC203) XM-READY P.W.B. Functionnal Description 13 DRA-397/297/37 F2602-1 XMDTIC Pin Descriptions 14