Marantz-SR7400-avr-sm 维修电路原理图.pdf
SR7400 / PS7400Part no. 37AW855010First Issue 2003.11ecmPlease use this service manual with referring to the user guide ( D.F.U. ) without fail.ServiceManualSR7400SR7400TABLE OF CONTENTSSECTION PAGE 1. TECHNICAL SPECIFICATIONS. 1 2. TECHNICAL DESCRIPTION. 4 3. WIRING DIAGRAM. 7 4. BLOCK DIAGRAM. 9 5. SCHEMATIC DIAGRAM . 11 6. PARTS LOCATION . 29 7. IC DATA. 42 8. EXPLODED VIEW AND PARTS LIST . 53 9. POWER AMPLIFIER ADJUSTMENT. 5710. SERVICE MODE . 5811. SYSTEM ERROR. 6012. UPDATE FIRMWARE . 6113. ELECTRICAL PARTS LIST . 63AV SURROUND RECEIVER SR7400UPSELECTORVOLUMEDOWNMEMORYTUNINGMODEF/PCLEAR7.1CH INPUTAUX2MUTEMULTI SPEAKERMULTISPEAKERS A/BPOWER ON/STANDBYPHONESENTERSTANDBYAUX1 INPUTS-VIDEOVIDEOLAUDIORDSS/VCR2AUX1VCR1DVDTVCDCD-RTAPETUNERS-DIRECTSELECTDIGITALPS7400PS7400AV Surround ReceiverSR7400 /K1G/L1G/N1B/U1B/N1S/S1GPS7400 /F1NAV Surround Amplifi erRadioFans.CN 收音机爱 好者资料库MARANTZ DESIGN AND SERVICEUsing superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound.Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifi cations for which it is famous. Parts for your MARANTZ equipment are generally available to our National Marantz Subsidiary or Agent. ORDERING PARTS : Parts can be ordered either by mail or by Fax. In both cases, the correct part number has to be specifi ed. The following information must be supplied to eliminate delays in processing your order : 1. Complete address 2. Complete part numbers and quantities required 3. Description of parts 4. Model number for which part is required 5. Way of shipment 6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.SHOCK, FIRE HAZARD SERVICE TEST : CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product and controls and chassis bottom. Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, and verifi ed before it is return to the user/customer. Ref. UL Standard No. 1492.In case of diffi culties, do not hesitate to contact the Technical Department at above mentioned address. 030307MITSUPERSCOPE TECHNOLOGIES, INC.USAMARANTZ AMERICA, INC1100 MAPLEWOOD DRIVEITASCA, IL. 60143USAPHONE : 630 - 741 - 0300FAX : 630 - 741 - 0301JAPANTechnical MARANTZ JAPAN, INC.35- 1, 7- CHOME, SAGAMIONOSAGAMIHARA - SHI, KANAGAWAJAPAN 228-8505PHONE : +81 42 748 1013FAX : +81 42 741 9190EUROPE / TRADING MARANTZ EUROPE B.V.P. O. BOX 8744, BUILDING SILVERPOINTBEEMDSTRAAT 11, 5653 MA EINDHOVENTHE NETHERLANDSPHONE : +31 - 40 - 2507844FAX : +31 - 40 - 2507860AUSTRALIAQualiFi Pty Ltd,24 LIONEL ROAD, MT. WAVERLEY VIC 3149AUSTRALIAPHONE : +61 - (0)3 - 9543 - 1522FAX : +61 - (0)3 - 9543 - 3677NEW ZEALANDWILDASH AUDIO SYSTEMS NZ14 MALVERN ROAD MT ALBERTAUCKLAND NEW ZEALANDPHONE : +64 - 9 - 8451958FAX : +64 - 9 - 8463554THAILANDMRZ STANDARD CO., LTD746 - 754 MAHACHAI ROAD.,WANGBURAPAPIROM, PHRANAKORN, BANGKOK, 10200 THAILANDPHONE : +66 - 2 - 222 9181FAX : +66 - 2 - 224 6795TAIWANPAI- YUING CO., LTD.6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C.PHONE : +886 - 2 - 25221304FAX : +886 - 2 - 25630415MALAYSIAWO KEE HONG ELECTRONICS SDN. BHD.2ND FLOOR BANGUNAN INFINITE CENTRELOT 1, JALAN 13/6, 46200 PETALING JAYASELANGOR DARUL EHSAN, MALAYSIAPHONE : +60 - 3 - 7954 8088FAX : +60 - 3 - 7954 7088 AMERICASMARANTZ PROFESSIONAL PRODUCTS2640 WHITE OAK CIRCLE, SUITE AAURORA, ILLINOIS 60504 USAPHONE : 630 - 820 - 4800FAX : 630 - 820 - 8103KOREAMK ENTERPRISES LTD.ROOM 604/605, ELECTRO-OFFICETEL, 16-58, 3GA, HANGANG-RO, YONGSAN-KU, SEOULKOREAPHONE : +822 - 3232 - 155FAX : +822 - 3232 - 154SINGAPOREWO KEE HONG DISTRIBUTION PTE LTD130 JOO SENG ROAD#03-02 OLIVINE BUILDING SINGAPORE 368357PHONE : +65 6858 5535 / +65 6381 8621FAX : +65 6858 6078HONG KONGJolly ProAudio Broadcast Engineering Ltd.UNIT 2, 10F, WAH HUNG CENTRE,41 HUNG TO ROAD, KWUN TONG, KLN.,HONG KONGPHONE : 852 - 21913660FAX : 852 - 21913990CANADALENBROOK INDUSTRIES LIMITED633 GRANITE COURT, PICKERING, ONTARIO L1W 3K1CANADAPHONE : 905 - 831 - 6333FAX : 905 - 831 - 6936TECHNICAL AUDIO GROUP PTY, LTD43-53 Bridge Rd.,STANMORE NSW 2048AUSTRALIAPHONE : +61 - (0)2 - 9519 - 0900FAX : +61 - (0)2 - 9519 - 0600 AUSTRALIARadioFans.CN 收音机爱 好者资料库11. TECHNICAL SPECIFICATIONSFM TUNER SECTION SR7400 Frequency Range.87.5 - 108.0 MHz Usable Sensitivity .IHF 1.8 V/16.4 dBf Signal to Noise Ratio. Mono/Stereo 75/70 dB Distortion.Mono/Stereo 0.2/0.3 % Stereo Separation.1 kHz 45 dB Alternate Channel Selectivity. 300 kHz 60 dB Image Rejection.98 MHz 70 dB Tuner Output Level . 1 kHz, 75 kHz Dev 800 mVAM TUNER SECTION SR7400 Frequency Range.531 - 1602 kHz /K/N/S . 520 - 1710 kHz /L/U Signal to Noise Ratio.50 dB Usable Sensitivity.Loop 400V Distortion.1 kHz, 30 % Mod. 0.5 % Selectivity. 20 kHz 70 dBAUDIO SECTION Power Output (20 Hz - 20 kHz/THD=0.08%) Front L&R.8 ohms 105 W / Ch Center.8 ohms 105 W / Ch Surround L&R.8 ohms 105 W / Ch Surround Back.8 ohms 105 W / Ch Front L&R.6 ohms 130 W / Ch Center.6 ohms 130 W / Ch Surround L&R.6 ohms 130 W / Ch Surround Back.6 ohms 130 W / Ch Input Sensitivity/Impedance. 168 mV/ 47 kohms Signal to Noise Ratio Analog Input / Source Direct.105 dB Frequency Response Analog Input / Source Direct.8 Hz - 100 kHz ( 3 dB) Digital Input / 96 kHz PCM. 8 Hz - 45 kHz ( 3 dB)VIDEO Television Format . NTSC/PAL Input Level/Impedance.1 Vp-p/75 ohms Output Level/Impedance.1 Vp-p/75 ohms Video Frequency Response .5 Hz to 8 MHz (- 1 dB) Video Frequency (Component) .5 Hz to 80 MHz (- 1 dB) S/N.60 dBGENERAL Power Requirement.AC 100 V 50/60 Hz /F .AC 220 V 50 Hz /K .AC 110 V 60 Hz /L .AC 230 V 50 Hz /N/S . AC 120 V 60 Hz /U Power Consumption.540 W Weight . 14.0 kg (30.9 Ibs)ACCESSORIES Remote Control Unit RC1400 . 1 AAA-size batteries. 3 FM Antenna SR7400. 1 FM Antenna Converter SR7400. 1 AM Loop Antenna SR7400 . 12Surround ModeInput SignalDecodingOutput ChannelFront information displayL/RCSLSBLSubWSignal format indicatorsChannel statusSR SBRAUTODolby Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFEDolby D(2ch)Dolby Digital 2.0O-2 DIGITALL, RDolby D (2ch Surr)Pro Logic IIx movieOOOO-2 DIGITAL , 2 SURROUNDL, R, SDTS-ESDTS-ESOOOOOdts , ESL, C, R, SL, SR, S, LFEDTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFEDTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM(Audio)PCM (Stereo)O-PCML, RPCM 96kHzPCM (96kHz Stereo)O-PCML, RAnalogStereoO-ANALOG-S-DIRECTDolby D Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)Dolby Digital 2.0O-2 DIGITALL, RDolby D (2ch Surr)Pro Logic IIx movieOOOO-2 DIGITAL , 2 SURROUNDL, R, SDTS-ESDTS-ESOOOOOdts , ESL, C, R, SL, SR, S, LFEDTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFEDTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM (Audio)PCM (Stereo)O-PCML, RPCM 96kHzPCM (96kHz Stereo)O-PCML, RAnalogStereoO-ANALOG-EX/ESDolby D Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)Dolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, LFEDTS-ESDTS-ESOOOOOdts , ESL, C, R, SL, SR, S, LFEDTS(5.1ch)DTS-ESOOOOOdtsL, C, R, SL, SR, LFEDOLBYDolby D Surr. EXDolby Digital 5.1OOOOO2 DIGITALL, C, R, SL, SR, S, LFE(PLIIx movie)Dolby D (5.1ch)Dolby Digital 5.1OOOOO2 DIGITALL, C, R, SL, SR, LFE(PLIIx music)Dolby D (2ch)Pro Logic IIxOOOO-2 DIGITALL, R(PLIIx game)Dolby D (2ch Surr)Pro Logic IIxOOOO-2 DIGITAL , 2 SURROUNDL, R, S(Pro Logic)PCM (Audio)Pro Logic IIxOOOO-PCML, RAnalogPro Logic IIxOOOO-ANALOG-DTSDTS-ESDTS 5.1OOO-Odts , ESL, C, R, SL, SR, S, LFE(Neo:6 Cinema)DTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFE(Neo:6 Music)DTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM (Audio)Neo:6OOOO-PCML, RAnalogNeo:6OOOO-ANALOG-Dolby D (2ch)Neo:6OOOO-2 DIGITALL, RDolby D (2ch Surr)Neo:6OOOO-2 DIGITAL , 2 SURROUNDL, R, SCSII CinemaPCM (Audio)CS IIOOOOOPCML, RCSII MusicAnalogCS IIOOOOOANALOG-CSII MonoDolby D (2ch)CS IIOOOOO2 DIGITALL, RDolby D (2ch Surr)CS IIOOOOO2 DIGITAL , 2 SURROUNDL, R, SSTEREODolby Surr. EXStereoO-O2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)StereoO-O2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)StereoO-2 DIGITALL, RDolby D (2ch Surr)StereoO-2DIGITAL , 2 SURROUNDL, R, SDTS-ESStereoO-Odts , ESL, C, R, SL, SR, S, LFEDTS 96/24StereoO-Odts 96/24L, C, R, SL, SR, LFEDTS (5.1ch)StereoO-OdtsL, C, R, SL, SR, LFEPCM (Audio)StereoO-PCML, RPCM 96kHzStereoO-PCML, RAnalogStereoO-ANALOG-VirtualDolby Surr. EXVirtualO-2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)VirtualO-2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)VirtualO-2 DIGITALL, RDolby D (2ch Surr)VirtualO-2 DIGITAL , 2 SURROUNDL, R, SDTS-ESVirtualO-dts , ESL, C, R, SL, SR, S, LFEDTS (5.1ch)VirtualO-dtsL, C, R, SL, SR, LFEPCM (Audio)VirtualO-PCML, RAnalogVirtualO-ANALOG-Multi Ch.Dolby Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEStereoDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)Multi Channel StereoOOOO-2 DIGITALL, RDolby D (2ch Surr)Multi Channel StereoOOOO-2 DIGITAL , 2 SURROUNDL, R, SDTS-ESDTS-ESOOOOOdts , ESL, C, R, SL, SR, S, LFEDTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM (Audio)Multi Channel StereoOOOO-PCML, RAnalogMulti Channel StereoOOOO-ANALOG-Note: Dolby Digital (2 ch: Lt/Rt): signal with DolbySurround flag Speakers are full set. No sound outputs from the surround speaker,center speaker and subwoofer if the DVD disc hasno surround data.AbbreviationsL/R : Front speakersC : Center speakerSL/SR : Surround speakersSBL/SBR : Surround Back speakersSubW : Sub woofer speakerThe relation between the selected surround mode and the input signalThe surround mode is selected with the surround mode buttons on SR7400/PS7400 or the remote control unit. However, the sound you hear is subject to the relationship between the selected surround mode and input signal. That relationship is as follows;SR74003入力信号再生出力前面表示L/RCSLSBLSubW信号表示表示SRSBRAUTODolby Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFEDolby D(2ch)Dolby Digital 2.0O-2 DIGITALL, RDolby D (2ch Surr)Pro Logic IIx movieOOOO*2 DIGITAL , 2 SURROUNDL, R, SDTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFEDTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFEDTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM(Audio)PCM (Stereo)O-PCML, RPCM 96kHzPCM (96kHz Stereo)O-PCML, RAAC (5.1ch)AAC 5.1OOO-OAACL, C, R, SL, SR, LFEAAC (2ch)AAC 2.0O-AACL, RAnalogStereoO-ANALOG-S-DIRECTDolby D Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)Dolby Digital 2.0O-2 DIGITALL, RDolby D (2ch Surr)Pro Logic IIx movieOOOO*2 DIGITAL , 2 SURROUNDL, R, SDTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFEDTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFEDTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM (Audio)PCM (Stereo)O-PCML, RPCM 96kHzPCM (96kHz Stereo)O-PCML, RAAC (5.1ch)AAC 5.1OOO-OAACL, C, R, SL, SR, LFEAAC (2ch)AAC 2.0O-AACL, RAnalogStereoO-ANALOG-EX/ESDolby D Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)Dolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, LFEDTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFEDTS(5.1ch)DTS-ESOOOOOdtsL, C, R, SL, SR, LFEAAC (5.1ch)AAC EXOOO-OAACL, C, R, SL, SR, LFEDOLBYDolby D Surr. EXDolby Digital 5.1OOOOO2 DIGITALL, C, R, SL, SR, S, LFE(PLIIx movie)Dolby D (5.1ch)Dolby Digital 5.1OOOOO2 DIGITALL, C, R, SL, SR, LFE(PLIIx music)Dolby D (2ch)Pro Logic IIxOOOO*2 DIGITALL, R(PLIIx game)Dolby D (2ch Surr)Pro Logic IIxOOOO*2 DIGITAL, 2 SURROUNDL, R, S(Pro Logic)PCM (Audio)Pro Logic IIxOOOO*PCML, RAAC (2ch)Pro Logic IIxOOOO*AACL, RAnalogPro Logic IIxOOOO*ANALOG-DTSDTS-ESDTS 5.1OOO-Odts, ESL, C, R, SL, SR, S, LFE(Neo:6 Cinema)DTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFE(Neo:6 Music)DTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM (Audio)Neo:6OOOO*PCML, RAnalogNeo:6OOOO*ANALOG-Dolby D (2ch)Neo:6OOOO*2 DIGITALL, RDolby D (2ch Surr)Neo:6OOOO*2 DIGITAL, 2 SURROUNDL, R, SAAC (2ch)Neo:6OOOO*AACL, RCSII CinemaPCM (Audio)CS IIOOOOOPCML, RCSII MusicAnalogCS IIOOOOOANALOG-CSII MonoDolby D (2ch)CS IIOOOOO2 DIGITALL, RDolby D (2ch Surr)CS IIOOOOO2 DIGITAL, 2 SURROUNDL, R, SAAC (2ch)CS IIOOOOOAACL, RSTEREODolby Surr. EXStereoO-O2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)StereoO-O2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)StereoO-*2 DIGITALL, RDolby D (2ch Surr)StereoO-*2DIGITAL,2 SURROUNDL, R, SDTS-ESStereoO-Odts, ESL, C, R, SL, SR, S, LFEDTS 96/24StereoO-Odts 96/24L, C, R, SL, SR, LFEDTS (5.1ch)StereoO-OdtsL, C, R, SL, SR, LFEPCM (Audio)StereoO-*PCML, RPCM 96kHzStereoO-*PCML, RAAC (5.1ch)StereoO-OAACL, C, R, SL, SR, LFEAAC (2ch)StereoO-*AACL, RAnalogStereoO-*ANALOG-VirtualDolby Surr. EXVirtualO-2 DIGITALL, C, R, SL, SR, S, LFEDolby D (5.1ch)VirtualO-2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)VirtualO-2 DIGITALL, RDolby D (2ch Surr)VirtualO-2 DIGITAL, 2 SURROUNDL, R, SDTS-ESVirtualO-dts, ESL, C, R, SL, SR, S, LFEDTS (5.1ch)VirtualO-dtsL, C, R, SL, SR, LFEPCM (Audio)VirtualO-PCML, RAAC (5.1ch)VirtualO-AACL, C, R, SL, SR, LFEAAC (2ch)VirtualO-AACL, RAnalogVirtualO-ANALOG-Multi Ch.Dolby Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFEStereoDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFEDolby D (2ch)Multi Channel StereoOOOO*2 DIGITALL, RDolby D (2ch Surr)Multi Channel StereoOOOO*2 DIGITAL, 2 SURROUNDL, R, SDTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFEDTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFEPCM (Audio)Multi Channel StereoOOOO*PCML, RAAC (5.1ch)AAC 5.1OOO-OAACL, C, R, SL, SR, LFEAAC (2ch)Multi ChannelOOOO*AACL, RAnalogMulti Channel StereoOOOO*ANALOG-PS7400 Dolby Digital (2ch Surr) :処理2ch信号 * :他Large/Small出力異。L/R : C : SL/SR : SBL/SBR : SubW : 42. TECHNICAL DESCRIPTIONDTS was introduced in 1994 to provide 5.1channels of discrete digital audio into home theatersystems.DTS brings you premium quality discretemultichannel digital sound to both movies andmusic.DTS is a multichannel sound system designed tocreate full range digital sound reproduction.The no compromise DTS digital process sets thestandard of quality for cinema sound by deliveringan exact copy of the studio master recordings toneighborhood and home theaters.Now, every moviegoer can hear the sound exactlyas the moviemaker intended.DTS can be enjoyed in the home for either moviesor music on of DVDs, LDs, and CDs.“DTS” and “DTS Digital Surround” are registeredtrademarks of Digital Theater Systems, Inc.The advantages of discrete multichannel systemsover matrix are well known.But even in homes equipped for discretemultichannel, there remains a need for high-qualitymatrix decoding. This is because of the largelibrary of matrix surround
