Denon-DRA395-rec-sm维修电路原理图.pdf

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1、Hi-Fi AM-FM Stereo Receiver SERVICE MANUAL MODELDRA-395 AM-FM STEREO RECEIVER SAFETY PRECAUTIONS. 2 SPECIFICATIONS . 2 DISASSEMBLY . 3 ADJUSTMENT. 4,5 BLOCK DIAGRAM . 6 LEVEL DIAGRAM . 7 SEMICONDUCTORS .812 PRINTED WIRING BOARDS .1317 NOTE FOR PARTS LIST. 18 PARTS LIST OF P.W.B. UNIT ASSY .1924 EXPL

2、ODED VIEW . 25 PARTS LIST OF EXPLODED VIEW . 26 PACKING VIEW . 27 TABLE OF CONTENTS ?Some illustrations using in this service manual are slightly different from the actual set. PARTS LIST OF PACKING & ACCESSORIES . 27 WIRING DIAGRAM. 28 SCHEMATIC DIAGRAMS .2934 (1/6)INPUT UNIT . 29 (2/6)VOLUME UNIT

3、. 30 (3/6)MAIN UNIT . 31 (4/6)VIDEO UNIT . 32 CONNECTOR UNIT . 32 (5/6)FRONT UNIT. 33 SWITCH UNIT . 33 POWER SW/HP UNIT. 33 (6/6)TUNER UNIT. 34 For U.S.A. & Canada model 14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011 JAPAN Telephone: 03 (3584) 8111 X0118 842 NC 0108 RadioFans.CN 收音机爱 好者资料库 2 DRA-

4、395 SPECIFICATIONS ? ? ? ? ? Audio Section (Power Amplifier) Rated output:80W + 80W (8/ohms, 20Hz 20kHz with 0.08% T.H.D.) Output terminals:A or B4 to 16/ohms A + B8 to 16/ohms (Analog) LINE input - PRE OUT Input sensitivity/input impedance:200mV/47k/kohms Frequency response:10Hz 50kHz: 1.5dB S/N ra

5、tio:100 dB (IHF-A weighted) Total harmonic distortion:0.009% (3dB at rated output, 8/ohms) (1kHz) Rated output:1.2V PHONO input - REC OUT Input sensitivity/input impedance:2.5mV/47k/kohms RIAA deviation:0.5dB (20Hz 20kHz) S/N ratio:74dB (IHF-A weighted, with 5mV input) Total harmonic distortion:0.03

6、% (1kHz, 3V) Rated output/Maximum output:150mV/7V ? ? ? ? ? Video Section (Standard Video Jacks) Input/output level and impedance:1V p-p, 75/ohms Frequency response:5Hz 10MHz +1, 3dB ? ? ? ? ? Tuner Section FM (note: V at 75/ohms, 0dBf = 110-15W)AM Receiving range:87.50MHz 107.90 MHz520kHz 1710kHz U

7、sable sensitivity:1.4V (14.2dBf)18V 50dB quieting sensitivity:MONO2.8V (20.2dBf) STEREO23V (38.5dBf) S/N ratio:MONO80dB (IHF-A weighted) STEREO75dB (IHF-A weighted) Total harmonic distortion:MONO0.15% (1kHz) STEREO0.3% (1kHz) ? ? ? ? ? General Power supply:AC120V, 60Hz Power consumption:3.39A Maximu

8、m external dimensions:434 (W) 147 (H) 417 (D) mm (17-1/16 5-25/32 16-7/16) Weight:9.7kg (21lbs 6oz) ? ? ? ? ? Remote Control Unit (RC-894) Batteries:R03/AAA Type (two batteries) External dimensions:64 (W) 206 (H) 19 (D) mm (2-13/64 8-9/32 3/4) Weight:140g (Approx. 4.9 oz) (including batteries) * For

9、 purposes of improvement, specifications and design are subject to change without notice. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you mak

10、e 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. RadioFans.CN 收音机爱 好者资料库 3 DRA-395 DISASSEMBLY (Follow the pr

11、ocedure below in reverse order when reassembling) Top Cover Remove 6 screws 1 and 3 screws 2, detach the Top Cover in the arrow direction. Top Cover Front Panel 1. Remove 4 screws 3 and 2 screws 4. 2. Detach the Front Panel in the arrow direction. 2 1 1 3 Rear Panel 1. Remove cord bushing 5 from the

12、 Rear Panel. 2. Remove 26 screws 6. 3. Detach the Rear Panel in the arrow direction. 4 Front Panel Rear Panel 5 6 6 6 4 DRA-395 FM ALIGNMENT InputOutputAdjustment Step Alignment Item Tuning Frequency Setting TypeFrequency Input Level ModulationCouplingTypeConnect toPointsAdjust to 1 Center Adjustmen

13、t 98.1MHz (98.0MHz) FM SSG98.1MHz60dB Mono 1kHz 100% Antenna Terminal Digital Voltmeter R471T402 50mV 2Distortion 98.1MHz (98.0MHz) FM SSG98.1MHz60dB Mono 1kHz 100% Antenna Terminal Distortion Meter Output Terminal (L) T403 Minimum Distortion 3Repeat Steps 1 and 2 4Signal Level 98.1MHz (98.0MHz) FM

14、SSG98.1MHz20dBOFF Antenna Terminal Light “TUNED” on FL Display VR402 ADJUSTMENT Tuner Section CONNECTION DIAGRAM OF MEASURING INSTRUMENTS ? FM STEREO MODULATOR FM SSG Digital Voltmeter 75ohm T402T403 IC402 VR402 TUNER BD R471 20+14 10dB ? AM T402T403 IC402 TUNER BD R471 VR401 AM ALIGNMENT OutputAdju

15、stment Step Alignment Item FrequencyInput TypeConnect toPointsAdjust to Remarks 1Signal Level 999 (1000) kHz AM SSGVR401 Light “TUNED” on FL Display SSG OUTPUT 74dB (EMF) 5 DRA-395 Audio Section Idling Current Required measurement equipment : DC Voltmeter Preparation (1)Avoid direct blow from an air

16、 conditioner or an electric fan, and adjust the unit at normal room tempereture 15 C 30 C (59 F 86 F). (2)Presetting G POWER (Power sourse switch)OFF G SPEAKER (Speaker terminal)No load (Do not connect speaker, dummy resistor, etc.) Adjustment (1)Remove top cover and set VR101, VR102 on Amp. Unit at

17、 full counterclockwise ( ) position. (2)Connect DC Voltmeter to test points (Lch: TP101, Rch: TP102). (3)Connect power cord to AC Line, and turn power switch ON. (4)Presetting.MASTER VOLUME : - counterclockwise ( min.) FUNCTION: CD (5)Within 2 minutes after the power on, turn VR101 clockwise ( ) to

18、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 2.5 mV 0.5 mV DC. (7)Adjust the Variable Resistors of other channels in the same way. VR101 TP101 VR102 TP102 Lch Rch 87654321 A B C D E DRA-395 6 BLOCK DIAGRAM CD 1 1 2 3 8

19、 4 6 5 8 7 4 7 6 5 8 4 6 5 8 7 4 1 1 1 ATT MUTE POWER AMP MAIN VOL INPUT BUFFER AMP ATT 1 1 1 1 MAIN MULTI ROOM CD IN -18dB VOL 00 +15.5dB -35.5dB +16.2dB +27dB SPK OUT 2.83V (1W/8ohms) H/P OUT 47mV (1W/8ohms) MULTI ROOM OUT 1.2V (200mV) (200mV) SPK OUT H/P OUT MULTI OUT 87654321 A B C D E DRA-395 7

20、 LEVEL DIAGRAM 130 31 50 5180 81 100 CXP82840-319Q Terminal Function SEMICONDUCTORS ? ? ? ? ? ICs CXP82840-319Q (IC900) 1G2/A1OFL G02 2G1/A0OFL G01 3NC(Vdd)INC(Connect to Vdd) 4POWER DOWNIAC OFF Detect 5ENC VOLUME UPIEncoder VOLUME UP 6RDS CLOCKIRDS clock input(TDA7330) 7ENC VOLUME DOWNIEncoder VOLU

21、ME DOWN 8REMOCONIRemote signal input. 9PROTECTIONIProtection detecting input. 10SUB ZONE2 LEDOZONE3 LED indicator control 11SUB ZONE1 LEDOZONE2 LED indicator control 1262446 LATCHOElectronic volume control.(M62446 LATCH) 13FUNCTION SW 1 CEOFunction IC control.(TC9274 CE) 14FUNCTION 1/2 DATAOFunction

22、 IC control.(TC9274 DATA) 15FUNCTION 1/2 CLOCKOFunction IC control.(TC9274 CLOCK) 16VOLUME,PLL,4094,DATAOLC72131,M62446,KIC9459,TC9184,TC4094(DATA) 17VOLUME,PLL,4094,CLOCKOLC72131,M62446,KIC9459,TC9184,TC4094(CLOCK) 18TUNEDITUNED signal in. 19STEREOISTEREO signal in. 20IF COUNTIPLL data in.(LC72131)

23、 21TUNER MUTEOTuner mute output. 22PLL CEOLC72131(CE) 234094 STBOTC4094(STB) 24VOLUME STBOKIC9459,TC9184(STB) 25SUB 1 MUTEOZONE2 mute control. 26MAIN MUTEOMAIN,Subwoofer mute output. 27POWER RELAYOPower supply relaycontrol. 28AV REF.IReference voltage input for A/D converter. 291511 DATAONot used. 3

24、0RDS DATAINot used. 31KEY IN 1IKey input 1 32KEY IN 2IKey input 2 33KEY IN 3IKey input 3 34STEP OPTIONIArea select. 35SET OPTIONIModel select. 36SPEAKER A LED 1OSPEAKER A LED indicator control 37A VSSIA/D converter GND. 38RESETILow-level active,system reset. 39EXTALIEXTAL(10MHz) 40XTALOXTAL(10MHz) 4

25、1VSSIGND 42NC(TX)ONot used. 43G(TEX)IGND 44VDDIVcc SUPPLY. 45VFDPIFDP voltage supply. Pin No. Pin NameFunctionI/O Pin No. Pin NameFunctionI/O 46SPEAKER B LED 2OSPEAKER B LED indicator control 47STBY LED 3OSTANDBY LED indicator control 48PD2/A53OFL P38 49PD3/A52OFL P37 50PD4/A51OFL P36 51PD5/A50OFL P

26、01 52PD6/A49OFL P02 53PD7/A48OFL P03 54PF0/A47OFL P04 55PF1/A46OFL P05 56PF2/A45OFL P06 57PF3/A44OFL P07 58PF4/A43OFL P08 59PF5/A42OFL P09 60PF6/A41OFL P10 61PF7/A40OFL P11 62PG0/A39OFL P12 63PG1/A38OFL P13 64PG2/A37OFL P14 65PG3/A36OFL P15 66PG4/A35OFL P16 67PG5/A34OFL P17 68PG6/A33OFL P18 69PG7/A3

27、2OFL P19 70PH0/A31OFL P20 71PH1/A30OFL P21 72PH2/A29OFL P22 73PH3/A28OFL P23 74PH4/A27OFL P24 75PH5/A26OFL P25 76PH6/A25OFL P26 77PH7/A24OFL P27 78A23OFL P28 79A22OFL P29 80A21OFL P30 81A20OFL P31 82A19OFL P32 83A18OFL P33 84A17OFL P34 85A16OFL P35 86G16OFL G16 87G15OFL G15 88G14OFL G14 89VddIVcc SU

28、PPLY. 90G13OFL G13 91G12OFL G12 92G11OFL G11 93G10OFL G10 94G9OFL G09 95G8OFL G08 96G7OFL G07 97G6OFL G06 98G5OFL G05 99G4OFL G04 100G3OFL G03 8 DRA-395 1_CXP82840.p6501/08/18, 15:40Page 8-9Adobe PageMaker 6.5J/Win 9 DRA-395 LA1266 (IC402) 10 4 13 8 19 15 17 18 14 21 22 GND V cc 511 IF BUFFER IF BUF

29、FER 2 FM - IF 6 Q.D. 7 REG 23 OSC OSC BUFFER 24 NARROW S-METER S-METER 16 LED DRIVER RFMIX 12 20 AM-IFDET AGC POST AMP 9 13 AM-IFFM-IFFM-IN AM - IN TC9184AP (IC602) 2 3 4 5 6 11678910 15 14 13 BASS+ BASS? COM TREBLE? TREBLE+ VSS VDD GND CK DATA STB BASS+ BASS? COM TREBLE? TREBLE+ Ladder resister Ana

30、log switch 13 bit latch circuit Level shift 20 bit Shift register circuit Analog switch Ladder resister Ladder resister Analog switch 13 bit latch circuit Code detect circuit Analog switch Ladder resister 201918171615141312 987561 21 LA3401 (IC403) 22 VOL REG OSC SYMMETRICAL REOCTANCE CIRCUIT PHASE

31、COMPARATOR VCO STOP PILOT DET FFFF FF 38kHz FF 38kHz 90 FF 19kHz 90 MUTING FM AM CHANGE Ro Rc Rc Rb 234 DECODER MUTING CONTROL FM AM CHANGE OVER Vcc ON MUTING MUTING OUTPUT STEREO SWITCH TRIGGER LAMP DRIVER Rb 1011 LC72131M (IC401) 120 219 318 417 5 16 615 714 813 912 1011 XIN CE DI CL DO BO1 BO2 BO

32、3 BO4 IO1 AOUT AIN PD VDD FMIN AMIN IO2 IFIN V ss XOUT BA7625 (IC501) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Monitor OUT GND IN5 GND IN4 CTL E IN3 CTL D IN1 CTL A V OUT1 Vcc IN2 CTL B V OUT2 CTL C 6dB 6dB LOGIC LOGIC ABEMONITOR OUTCDEV OUT 1CDEV OUT 2 LL * IN 1 LL * ? LL * IN 1 HL * IN 2HL * IN 2HL

33、* ? LH * IN 3LH * IN 3LH * IN 3 HHLIN 4HHLIN 4HHLIN 4 HHHIN 5HHHIN 5HHHIN 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). 11 12 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9

34、Vss BASS+ BASS ? CON TREBLE ? TREBLE+ GND CK VDD BASS+ BASS ? COM TREBLE ? TREBLE+ STB DATA 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 10 DRA-395 ABLC GND Vcc 16 1 15 2 14 3 13 4 12 5 11 6 10 7 9 8 STR D CP QP0 QP1 QP4 QP5 QP6 QP7 QS2 QS1 QP3 QP2 GND OE 42 41 40 39 38 37 36 35 34

35、 33 32 31 30 29 28 27 26 25 24 23 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 OUT4 OUT3 OUT2 OUT1 AVDD DVDD SWOUT SROUT SLOUT COUT ROUT LOUT AVSS SWin GNDS SRin SLin GNDC Cin DNDR Rin GNDL Lin BYPASSR BLPASSL LTRE LBASS3 LBASS2 LBASS1 CLK DATA LATCH DGND AGND CL1 CL2 CR1 CR2 RTRE RBASS3

36、 RBASS2 RBASS1 tonetone OUTPUT PORT MCU I/F VCC VOUT 22kohm B.P.F PD volume volume volume volume volume volume TC9274N-008 (IC303) M62446FP (IC603) PC74HC4094 (IC604) ? ICP-N15 (IC105) ? P43T7D330BW16 NJL64H380A(RMC900) IC PROTECTOR IR SENSOR ? POSISTOR Detector Comparator LimiterAmpHead Amp FRONT V

37、IEW FRONT VIEW Vout GND Vcc FRONT VIEW A OUTPUT A INPUT A+INPUT V B OUTPUT V B INPUT B +INPUT 1 2 3 45 7 8 6 NJM2068DD (IC300302, 605610) 87564 32 1 ABLC Head Amp Limiter Amp + IN C1C2 GNDfo NCOUT Vcc CXA1511M(IC502) 8 1 7 2 6 3 5 4 IN C1 C2 GND NC fo OUT VCC KIC9459F (IC601) 1 2 3 4 5 6 7 8 9 10 11

38、 12 24 23 22 21 20 19 18 17 16 15 14 13 Vss L-OUT NC L-IN L-LD1 L-LD2 L.A.GND NC CS1 NC GND CK VDD R-OUT NC R-IN R-LD1 R-LD2 R.A.GND NC CS2 NC STB DATA L-chR-ch KIA7805AP (IC103) NJM7805FA (IC104) KIA7815AP (IC101) NJM7915FA (IC102) Input GND Output FRONT VIEW GND Input Output FRONT VIEW 42 S141 S1S

39、140 39 S138 S1 S1S137 S136 S735 S842 S1S5 34 S142 42 42 42 33 S1032 S1131 S1230 42 42 42 42 S1329 S1428 S1527 S1626 42 42 42 42 S1725 S1824 23 22 STB DATA S9 S6 S1 S3 S4 S2 VDD 1 2 3 4 5 6 7 S78 S8 S5 9 10 S1011 S1112 S1213 S1314 S1415 S1516 S1617 S1718 S1819 20 21 GND CK S9 S6 S1 S3 S4 S2 VSS BPF B

40、EF Detector & Comparator Integrator Hysteresis Comparator 11 DRA-395 2SD947F KTA1266Y KSA992F KSC1845F KTC3200BL KTC3198Y KTA1268BL KSA916Y 2SC1740S KTC2874B KTC3880S DTA114EK DTA114YK DTC114YK TOP VIEW E B C TOP VIEW E B C FRONT VIEW BCE TOP VIEW KDS160MTZJ3.3B MTZJ5.1B MTZJ5.6B MTZJ6.2B MTZJ6.8B M

41、TZJ7.5A MTZJ7.5B MTZJ18B MTZJ20B 1N4007 1SS133 B C E R1 R2 B C E R1 R2 2SB1560 2SD2390 FRONT VIEW ECB DTA114ES DTA144ES DTC114ES DTC114YS DTC144ES FRONT VIEW BCE DTA series DTC series DTA114EK DTA114YK R1 10kohm R2 10kohm 10kohm 47kohm DTA114ES10kohm 10kohm DTA114ES47kohm47kohm DTC114YK R1R2 10kohm

42、47kohm DTC144ES47kohm 47kohm DTC114YS10kohm 47kohm DTC114ES10kohm 10kohm TOP VIEW HL-50RDRF4 KBPC604 TRANSISTORS ? DIODES (LED Included) 12 DRA-395 FL DISPLAY 16-st-42GNK (FL900) S38 S14 S9S1 S2 S3 S4 S5 S12 S13 S7S15 S6 S10 S11 G1 G1G2G3G4G5G6G7G16G15G13G12G10G9 F2F1 158 G14G11G8 G2G16 123456789101

43、11213141516171819 232425262728293031323334 F1F1S1S2S3S4S5S6S7S8S9S10 S11 S12 S13 S14 S15 S16 S17 20 2122353637383940 4142434445464748495051525354555657 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36S37 S38 G16 G15 G14 G13 G12 G11 G10G9G8G7G6G5G4G3G2G1F2F2 58 F1,F2 : Fila

44、ment G1G16 : Grid S1S38 : Anode S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 G1G2G3G4G5G6G7G8G9G10G11G12G13G14G15G16 S38 S36 S37 S38 ? 2 DBS TV ? 1 VDP TAPE /(DVD) /(MD) AUXDVD MDV.AUX TUNER ? 2 ? 3 CD ? 1 PHONO VCR REC MULTI STEREO AUTO TUNED RDS CH S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S1 S2 S

45、3 S4 S5 S6 S7 S9 S10 S11 S12 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S13 S14 S15 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 G2G16G1G2G16G1G2G16G1G2G16G1 DIGITAL PRO LOGIC S1 S6 S11 S16 S21 S26 S31 S2 S7 S12 S17 S22 S27 S32 S3 S8 S13 S18 S23 S28 S33 S4 S9 S14 S19 S24 S29 S34 S5 S10 S15 S20 S25 S30 S35 TUNED RDS STEREO AUTO REC MULTI PHONO VCR CD ? 1 TUNER ? 2 ? 3V.AUX AUX MD DVD / /TAPE VDPTV ? 1 ? 2 /DBS PRO LOGIC DIGITAL DIGITAL ANALOG TUNED RDS STEREO AUTO