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1、SR7400 / PS7400 Part no. 37AW855010 First Issue 2003.11 ecm Please use this service manual with referring to the user guide ( D.F.U. ) without fail. Service Manual SR7400SR7400 TABLE OF CONTENTS SECTION PAGE 1. TECHNICAL SPECIFICATIONS. 1 2. TECHNICAL DESCRIPTION. 4 3. WIRING DIAGRAM. 7 4. BLOCK DIA
2、GRAM. 9 5. SCHEMATIC DIAGRAM . 11 6. PARTS LOCATION . 29 7. IC DATA. 42 8. EXPLODED VIEW AND PARTS LIST . 53 9. POWER AMPLIFIER ADJUSTMENT. 57 10. SERVICE MODE . 58 11. SYSTEM ERROR. 60 12. UPDATE FIRMWARE . 61 13. ELECTRICAL PARTS LIST . 63 AV SURROUND RECEIVER SR7400 UP SELECTORVOLUME DOWN MEMORYT
3、UNINGMODEF/PCLEAR 7.1CH INPUTAUX2 MUTE MULTI SPEAKERMULTISPEAKERS A/B POWER ON/STANDBYPHONES ENTER STANDBY AUX1 INPUT S-VIDEOVIDEOLAUDIOR DSS/VCR2AUX1VCR1DVDTVCDCD-RTAPETUNER S-DIRECTSELECT DIGITAL PS7400PS7400 AV Surround Receiver SR7400 /K1G/L1G/N1B/U1B /N1S/S1G PS7400 /F1N AV Surround Amplifi er
4、RadioFans.CN 收音机爱 好者资料库 MARANTZ DESIGN AND SERVICE Using 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 famo
5、us. 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 pro
6、cessing 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,
7、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 chassi
8、s 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
9、 mentioned address. 030307MIT SUPERSCOPE TECHNOLOGIES, INC. USA MARANTZ AMERICA, INC 1100 MAPLEWOOD DRIVE ITASCA, IL. 60143 USA PHONE : 630 - 741 - 0300 FAX : 630 - 741 - 0301 JAPANTechnical MARANTZ JAPAN, INC. 35- 1, 7- CHOME, SAGAMIONO SAGAMIHARA - SHI, KANAGAWA JAPAN 228-8505 PHONE : +81 42 748 1
10、013 FAX : +81 42 741 9190 EUROPE / TRADING MARANTZ EUROPE B.V. P. O. BOX 8744, BUILDING SILVERPOINT BEEMDSTRAAT 11, 5653 MA EINDHOVEN THE NETHERLANDS PHONE : +31 - 40 - 2507844 FAX : +31 - 40 - 2507860 AUSTRALIA QualiFi Pty Ltd, 24 LIONEL ROAD, MT. WAVERLEY VIC 3149 AUSTRALIA PHONE : +61 - (0)3 - 95
11、43 - 1522 FAX : +61 - (0)3 - 9543 - 3677 NEW ZEALAND WILDASH AUDIO SYSTEMS NZ 14 MALVERN ROAD MT ALBERT AUCKLAND NEW ZEALAND PHONE : +64 - 9 - 8451958 FAX : +64 - 9 - 8463554 THAILAND MRZ STANDARD CO., LTD 746 - 754 MAHACHAI ROAD., WANGBURAPAPIROM, PHRANAKORN, BANGKOK, 10200 THAILAND PHONE : +66 - 2
12、 - 222 9181 FAX : +66 - 2 - 224 6795 TAIWAN PAI- YUING CO., LTD. 6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C. PHONE : +886 - 2 - 25221304 FAX : +886 - 2 - 25630415 MALAYSIA WO KEE HONG ELECTRONICS SDN. BHD. 2ND FLOOR BANGUNAN INFINITE CENTRE LOT 1, JALAN 13/6, 46200 PETALING JAYA SE
13、LANGOR DARUL EHSAN, MALAYSIA PHONE : +60 - 3 - 7954 8088 FAX : +60 - 3 - 7954 7088 AMERICAS MARANTZ PROFESSIONAL PRODUCTS 2640 WHITE OAK CIRCLE, SUITE A AURORA, ILLINOIS 60504 USA PHONE : 630 - 820 - 4800 FAX : 630 - 820 - 8103 KOREA MK ENTERPRISES LTD. ROOM 604/605, ELECTRO-OFFICETEL, 16-58, 3GA, H
14、ANGANG-RO, YONGSAN-KU, SEOUL KOREA PHONE : +822 - 3232 - 155 FAX : +822 - 3232 - 154 SINGAPORE WO KEE HONG DISTRIBUTION PTE LTD 130 JOO SENG ROAD #03-02 OLIVINE BUILDING SINGAPORE 368357 PHONE : +65 6858 5535 / +65 6381 8621 FAX : +65 6858 6078 HONG KONG Jolly ProAudio Broadcast Engineering Ltd. UNI
15、T 2, 10F, WAH HUNG CENTRE, 41 HUNG TO ROAD, KWUN TONG, KLN., HONG KONG PHONE : 852 - 21913660 FAX : 852 - 21913990 CANADA LENBROOK INDUSTRIES LIMITED 633 GRANITE COURT, PICKERING, ONTARIO L1W 3K1 CANADA PHONE : 905 - 831 - 6333 FAX : 905 - 831 - 6936 TECHNICAL AUDIO GROUP PTY, LTD 43-53 Bridge Rd.,
16、STANMORE NSW 2048 AUSTRALIA PHONE : +61 - (0)2 - 9519 - 0900 FAX : +61 - (0)2 - 9519 - 0600 AUSTRALIA RadioFans.CN 收音机爱 好者资料库 1 1. TECHNICAL SPECIFICATIONS FM 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 Dist
17、ortion.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 mV AM TUNER SECTION SR7400 Frequency Range.531 - 1602 kHz /K/N/S . 520 - 1710 kHz /L/U Signal to Noise Ratio.50 dB Usable Se
18、nsitivity.Loop 400V Distortion.1 kHz, 30 % Mod. 0.5 % Selectivity. 20 kHz 70 dB AUDIO SECTION Power Output (20 Hz - 20 kHz/THD=0.08%) Front L SR7400 3 入力信号再生 出力 前面表示 L/R C SLSBL SubW 信号表示表示 SRSBR AUTODolby Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFE Dolby D (5.1ch)Dolby Digital 5.1
19、OOO-O2 DIGITALL, C, R, SL, SR, LFE Dolby D(2ch)Dolby Digital 2.0O-2 DIGITALL, R Dolby D (2ch Surr)Pro Logic IIx movieOOOO * 2 DIGITAL , 2 SURROUNDL, R, S DTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFE DTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFE DTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LF
20、E PCM(Audio)PCM (Stereo)O-PCML, R PCM 96kHzPCM (96kHz Stereo)O-PCML, R AAC (5.1ch)AAC 5.1OOO-OAACL, C, R, SL, SR, LFE AAC (2ch)AAC 2.0O-AACL, R AnalogStereoO-ANALOG- S-DIRECTDolby D Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFE Dolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, S
21、L, SR, LFE Dolby D (2ch)Dolby Digital 2.0O-2 DIGITALL, R Dolby D (2ch Surr)Pro Logic IIx movieOOOO * 2 DIGITAL , 2 SURROUNDL, R, S DTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFE DTS 96/24DTS 96/24OOO-Odts 96/24L, C, R, SL, SR, LFE DTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, LFE PCM (Audio)PCM (Stere
22、o)O-PCML, R PCM 96kHzPCM (96kHz Stereo)O-PCML, R AAC (5.1ch)AAC 5.1OOO-OAACL, C, R, SL, SR, LFE AAC (2ch)AAC 2.0O-AACL, R AnalogStereoO-ANALOG- EX/ESDolby D Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, S, LFE Dolby D (5.1ch)Dolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR, LFE DTS-ESDTS-ESOOO
23、OOdts, ESL, C, R, SL, SR, S, LFE DTS(5.1ch)DTS-ESOOOOOdtsL, C, R, SL, SR, LFE AAC (5.1ch)AAC EXOOO-OAACL, C, R, SL, SR, LFE DOLBYDolby 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
24、 (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, R AAC (2ch)Pro Logic IIxOOOO * AACL, R AnalogPro Logic IIxOOOO * ANALOG- DTSDTS-ESDTS 5.1OOO-Odts, ESL, C, R, SL, SR, S, LFE (Neo:6 C
25、inema)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, LFE PCM (Audio)Neo:6OOOO * PCML, R AnalogNeo:6OOOO * ANALOG- Dolby D (2ch)Neo:6OOOO * 2 DIGITALL, R Dolby D (2ch Surr)Neo:6OOOO * 2 DIGITAL, 2 SURROUNDL, R, S AAC (2ch)Neo:6OOOO * AACL,
26、 R CSII CinemaPCM (Audio)CS IIOOOOOPCML, R CSII MusicAnalogCS IIOOOOOANALOG- CSII MonoDolby D (2ch)CS IIOOOOO2 DIGITALL, R Dolby D (2ch Surr)CS IIOOOOO2 DIGITAL, 2 SURROUNDL, R, S AAC (2ch)CS IIOOOOOAACL, R STEREODolby Surr. EXStereoO-O2 DIGITALL, C, R, SL, SR, S, LFE Dolby D (5.1ch)StereoO-O2 DIGIT
27、ALL, C, R, SL, SR, LFE Dolby D (2ch)StereoO- * 2 DIGITALL, R Dolby D (2ch Surr)StereoO- * 2DIGITAL,2 SURROUNDL, R, S DTS-ESStereoO-Odts, ESL, C, R, SL, SR, S, LFE DTS 96/24StereoO-Odts 96/24L, C, R, SL, SR, LFE DTS (5.1ch)StereoO-OdtsL, C, R, SL, SR, LFE PCM (Audio)StereoO- * PCML, R PCM 96kHzStereo
28、O- * PCML, R AAC (5.1ch)StereoO-OAACL, C, R, SL, SR, LFE AAC (2ch)StereoO- * AACL, R AnalogStereoO- * ANALOG- VirtualDolby Surr. EXVirtualO-2 DIGITALL, C, R, SL, SR, S, LFE Dolby D (5.1ch)VirtualO-2 DIGITALL, C, R, SL, SR, LFE Dolby D (2ch)VirtualO-2 DIGITALL, R Dolby D (2ch Surr)VirtualO-2 DIGITAL,
29、 2 SURROUNDL, R, S DTS-ESVirtualO-dts, ESL, C, R, SL, SR, S, LFE DTS (5.1ch)VirtualO-dtsL, C, R, SL, SR, LFE PCM (Audio)VirtualO-PCML, R AAC (5.1ch)VirtualO-AACL, C, R, SL, SR, LFE AAC (2ch)VirtualO-AACL, R AnalogVirtualO-ANALOG- Multi Ch.Dolby Surr. EXDolby Digital EXOOOOO2 DIGITALL, C, R, SL, SR,
30、S, LFE StereoDolby D (5.1ch)Dolby Digital 5.1OOO-O2 DIGITALL, C, R, SL, SR, LFE Dolby D (2ch)Multi Channel StereoOOOO * 2 DIGITALL, R Dolby D (2ch Surr)Multi Channel StereoOOOO * 2 DIGITAL, 2 SURROUNDL, R, S DTS-ESDTS-ESOOOOOdts, ESL, C, R, SL, SR, S, LFE DTS (5.1ch)DTS 5.1OOO-OdtsL, C, R, SL, SR, L
31、FE PCM (Audio)Multi Channel StereoOOOO * PCML, R AAC (5.1ch)AAC 5.1OOO-OAACL, C, R, SL, SR, LFE AAC (2ch)Multi ChannelOOOO * AACL, R AnalogMulti 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 : 4 2. TECHNICAL DESCRIPTIO
32、N DTS was introduced in 1994 to provide 5.1 channels of discrete digital audio into home theater systems. DTS brings you premium quality discrete multichannel digital sound to both movies and music. DTS is a multichannel sound system designed to create full range digital sound reproduction. The no c
33、ompromise DTS digital process sets the standard of quality for cinema sound by delivering an exact copy of the studio master recordings to neighborhood and home theaters. Now, every moviegoer can hear the sound exactly as the moviemaker intended. DTS can be enjoyed in the home for either movies or m
34、usic on of DVDs, LDs, and CDs. “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc. The advantages of discrete multichannel systems over matrix are well known. But even in homes equipped for discrete multichannel, there remains a need for high-quality matrix de
35、coding. This is because of the large library of matrix surround motion pictures available on disc and on VHS tape; and analog television broadcasts. The typical matrix decoder of today derives a center channel and a mono surround channel from two-channel matrix stereo material. It is better than a s
36、imple matrix in that it includes steering logic to improve separation, but because of its mono, band-limited surround it can be disappointing to users accustomed to discrete multichannel. Neo:6 offers several important improvements as follow, Neo:6 provides up to six full-band channels of matrix dec
37、oding from stereo matrix material. Users with 6.1 and 5.1 systems will derive six and five separate channels, respectively, corresponding to the standard home-theater speaker layouts. Neo:6 technology allows various sound elements within a channel or channels to be steered separately, and in a way w
38、hich follows naturally from the original presentation. Neo:6 offers a music mode to expand stereo nonmatrix recordings into the five- or six- channel layout, in a way which does not diminish the subtlety and integrity of the original stereo recording. DTS-ES Extended Surround is a new multichannel d
39、igital signal format developed by Digital Theater Systems Inc. While offering high compatibility with the conventional DTS Digital Surround format, DTS-ES Extended Surround greatly improves the 360-degree surround impression and space expression thanks to further expanded surround signals. This form
40、at has been used professionally in movie theaters since 1999. In addition to the 5.1 surround channels (FL, FR, C, SL, SR and LFE), DTS-ES Extended Surround also offers the SB (Surround Back) channel for surround playback with a total of 6.1 channels. DTS-ES Extended Surround includes two signal for
41、mats with different surround signal recording methods, as DTS-ES Discrete 6.1 and DTS-ES Matrix 6.1. “DTS”, “DTS-ES Extended Surround” and “Neo:6” are trademarks of Digital Theater Systems, Inc. The stereo CD is a 16-bit medium with sampling at 44.1 kHz. Professional audio has been 20- or 24- bit fo
42、r some time, and there is increasing interest in higher sampling rates both for recording and for delivery into the home. Greater bit depths provide extended dynamic range. Higher sampling rates allow wider frequency response and the use of anti-alias and reconstruction filters with more favorable a
43、ural characteristics. DTS 96/24 allows for 5.1channel sound tracks to be encoded at a rate of 96kHz/24bits on DVD- Video titles. When DVD-video appeared, it became possible to deliver 24-bit, 96 kHz audio into the home, but only in two channels, and with serious limitations on picture. This capability has had little use. DVD-audio allows 96/24 in six channels, but a new player is needed, and only a
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