Yamaha-MCXC15-dac-sm 维修电路原理图.pdf

SERVICE MANUAL100892SERVICE MANUALDISTRIBUTED AUDIO CONTROLLER/AMPLIFIERMCX-C15/MCX-CA15MCX-C15/MCX-CA15This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are alreadyknown and understood by the users, and have therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components, and failure of the product to perform as specified. For thesereasons, we advise all YAMAHA product owners that any service required should be performed by anauthorized YAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certificationor recognition of any applicable technical capabilities, or establish a principle-agent relationship of anyform.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, andservice departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevita-ble and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, pleasecontact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to thisbuss).IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to theunit.IMPORTANT NOTICE MCX-C15客様所有MCX-1000組合動作場合、 客様所有CD-ROM使行。 MCX-CA15設定位置修理前異可能性、 使用前用途合適切位置設定。修理済品返却時以下客様伝。Please be sure to inform the user of the following when re-turning the repaired product to him/her.G MCX-C15When the unit used in combination with MCX-1000does not operate, execute updating by using theUpgrade CD-ROM owned by the user.GMCX-CA15The setting position of the Mode Switch may be dif-ferent from its position before the repair. Check andset the switch to the suitable position for the usepurpose before using the unit. 04.07RadioFans.CN 收音机爱 好者资料库2MCX-C15/MCX-CA15MCX-C15/MCX-CA15I TO SERVICE PERSONNEL1. Critical Components InformationComponents having special characteristics are marked Zand must be replaced with parts having specifications equalto those originally installed.2. Leakage Current Measurement (For 120V Models Only)When service has been completed, it is imperative to verifythat all exposed conductive surfaces are properly insulatedfrom supply circuits.GMeter impedance should be equivalent to 1500 ohm shuntedby 0.15F.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic(where applicable) components may also contain traces of chemicals found by the California Health and WelfareAgency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANYREASON WHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes orexpose eyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your handsbefore handling food.MCX-C15 UPDATING FIRMWARE / . . . . . . . . . . . . . . . . 1517MCX-C15 ENTERING SYSTEM ID / ID書込 . . . . . . . . . . . . . . . . . . . . . . 1820TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . 2124TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2528MCX-CA15 IC DATA . . . . . . . . . . . . . . . . . . . . . . 2930MCX-C15 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . 31MCX-CA15 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . 32PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 3336PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 36MCX-C15 SCHEMATIC DIAGRAM . . . . . . . . . . . 3741MCX-CA15 SCHEMATIC DIAGRAM . . . . . . . . . . . . . 42PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4351REMOTE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . 52I CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4REMOTE CONTROL PANEL . . . . . . . . . . . . . . . . . . . 4TOP CASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6BOTTOM CASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6I/O BOX (MCX-IB15) . . . . . . . . . . . . . . . . . . . . . . . . . . 6SPECIFICATIONS / 参考仕様 . . . . . . . . . . . . . . . . . . . . 7INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8MCX-C15 DISASSEMBLY PROCEDURES / 分解手順 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 911MCX-CA15 DISASSEMBLY PROCEDURES / 分解手順 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1213SERVICE HINTS / . . . . . . . . . . . . . . . . .14MCX-C15 RECOVERY AFTER REPLACING MAIN P.C.B. / MAIN P.C.B.交換後 . . . . . . . . . . . . . . 1415AC LEAKAGETESTER OREQUIVALENTEQUIPMENTUNDER TESTINSULATINGTABLEWALLOUTLETGLeakage current must not exceed 0.5mA.GBe sure to test for leakage with the AC plug in bothpolarities.RadioFans.CN 收音机爱 好者资料库3MCX-C15/MCX-CA15MCX-C15/MCX-CA15WARNING: Lithium batteries are dangerous becausethey can be exploded by improper handling. Observe thefollowing precautions when handling or replacing lithiumbatteries. Leave lithium battery replacement to qualified servicepersonnel. Always replace with batteries of the same type. When installing on the PC board by soldering, solder us-ing the connection terminals provided on the battery cells.Never solder directly to the cells. Perform the solderingas quickly as possible. Never reverse the battery polarities when installing. Do not short the batteries. Do not attempt to recharge these batteries. Do not disassemble the batteries. Never heat batteries or throw them into fire.ADVARSEL!Lithiumbatteri Eksplosionsfare ved fejlagtig hndtering.Udskiftning m kun ske med batteri af samme fabrikat ogtype. Levr det brugte batteri tilbage til leverandren.VARNINGExplosionsfara vid felaktigt batteribyte. Anvnd sammabatterityp eller an ekvivalent typ som rekommenderas avapparattillverkaren. Kassera anvnt batteri enligtfabrikantens instruktion.VAROITUSParisto voi rjht, jos se on virheellisesti asennettu.Vaihda paristo ainoastaan laitevalmistajan suosittelemaantyyppiin. Hvit kytetty peristo valmistajan ohjeidenmukaisesti.無鉛本機搭載基板付使用下記通。About Lead Free SolderThe P.C.B.s installed in this unit are soldered using the fol-lowing solder.Side ASide BMAIN P.C.B.Lead SolderLead SolderFUNCTION P.C.B.Lead SolderLead SolderSYSTEM P.C.B.Lead SolderLead Free SolderG MCX-C15Among some types of lead free solder currently available, itis recommended to use one of the following types for therepair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth)Caution:1. As the melting point temperature of the lead free solder is about30C to 40C (50F to 70F) higher than that of the lead solder,be sure to use a soldering iron suitable to each solder.2. If lead solder must be used, be sure to remove lead-free solderfrom each terminal section of the parts to be replaced and fromthe area around it completely before soldering, or make surethat the lead free solder and lead solder melt together fully.Side ASide BD-AMP P.C.B.Lead SolderLead Free SolderG MCX-CA15A 面B 面MAIN P.C.B.鉛入鉛入FUNCTION P.C.B.鉛入鉛入SYSTEM P.C.B.鉛入無鉛G MCX-C15A 面B 面D-AMP P.C.B.鉛入無鉛G MCX-CA15無鉛種類、 修理時下記無鉛使用推奨。Sn + Ag + Cu （錫+ 銀 + 銅）Sn + Cu （錫 + 銅）Sn + Zn + Bi （錫+ 亜鉛+ ）注意：1.無鉛融点温度通常鉛入比3040 程度高、 合使用。2.鉛入使得場合、 交換部品端子部周辺部無鉛取除、 無鉛鉛入十分溶状態付。Side ASide BSMT REFLOW ProcessMI FLOW ProcessSolder Dip4MCX-C15/MCX-CA15MCX-C15/MCX-CA15I FRONT PANELSM MCX-C15M MCX-CA15I REMOTE CONTROL PANELM MCX-CA15 (Inside Front Panel)5MCX-C15/MCX-CA15MCX-C15/MCX-CA15I TOP CASESM MCX-C15 (J model)M MCX-C15 (U, C models)M MCX-C15 (A model)M MCX-C15 (B, G models)M MCX-CA15 (U, C models)M MCX-CA15 (A model)M MCX-CA15 (B, G models)M MCX-CA15 (J model)6MCX-C15/MCX-CA15MCX-C15/MCX-CA15I BOTTOM CASESI REAR PANELSM MCX-C15M MCX-CA15I I/O BOX (MCX-IB15)M MCX-C15M MCX-CA157MCX-C15/MCX-CA15MCX-C15/MCX-CA15Unit : mm (inch)G DIMENSIONS / 寸法図M MCX-C15I SPECIFICATIONS / 参考仕様G MCX-C15G MCX-CA15I AUDIO PERFORMANCE / 性能Output Level / 出力2.0Vrms (1kHz 0dB VOL 0dB)Frequency Characteristics / 周波数特性20Hz to 20kHz, 0.5dB (EIAJ)Signal to Noise Ratio / SN比100dB (EIAJ)Dynamic Range / 再生98dB (EIAJ)THD + Noise / 歪率0.008% (EIAJ)* Values in the “AUDIO PERFORMANCE” section are measured withthe I/O Box (MCX-IB15) connected.* 性能各数値、I / O(MCX-I B15)接続測定。I GENERAL / 一般Playback Data Format / 再生MP3 (all clients), Liner PCM (selected one client)Power Supply / 電源電圧AC 100V to 240V, 50/60HzPower Consumption / 消費電力5WOperating Temperature / 動作温度+5C to +35CWeight (without AC adapter) / 質量0.6 kg (1 lbs 5 oz)Max. Dimensions (W x H x D) / 最大寸法120 x 120 x 106 mm(4-3/4 x 4-3/4 x 4-1/8)Panel Color / 色WhiteAccessory / 付属品I/O Box (MCX-IB15)Remote Control x1, Lithium Battery x1AC Adaptor x1, Power Cable x1CAT-5 Straight Cable (2 m) x1DC Power Cable (2 m) x2Spacers x4Upgrade CD-ROM x1Owners Manual CD-ROM x1I AUDIO PERFORMANCE / 性能Audio Out Level/Impedance /Audi o Out /1. 0Vrms / 1kFrequency Characteristics / 周波数特性20Hz to 20kHz, 1.0dB (EIAJ)Signal to Noise Ratio / SN比98dB (EIAJ)Dynamic Range / 再生98dB (EIAJ)THD + Noise / 歪率0.008% (EIAJ)Sub Woofer Out Level/Impedance /Sub Woof er Out / 1. 0Vrms / 2. 1k (EI AJ) POWER AMPLIFIER PERFORMANCE / 性能Minimum RMS Output Power / 定格出力13W + 13W (1kHz, 1% THD)Minimum Power / 実用最大出力17W + 17W or 18W (1ch) (1kHz, 10% THD, EI AJ)Input Sensitivity/Impedance / 入力感度 /220mV/ 3k (MODE A, B)780mV/ 3k (MODE C) (1kHz, 1% THD)I GENERAL / 一般Power Supply / 電源電圧AC 100V to 240V, 50/60HzPower Consumption / 消費電力40WOperating Temperature / 動作温度+5C to +35CWeight (without AC adapter) / 質量0.6 kg (1 lbs 5 oz)Max. Dimensions (W x H x D) / 最大寸法120 x 120 x 105 mm(4-3/4 x 4-3/4 x 4-1/8)Panel Color / 色WhiteAccessory / 付属品PI N/ MI NI PLUG Cable (1m) x1Spacers x4* Specifications subject to change without prior notice.* 仕様及外観、改良予告変更。120 (4-3/4) 120 (4-3/4) 106 (4-1/8)U . USA modelC . Canadian modelA . Australian modelB . British modelG . European modelJ. Japanese modelM I/O Box (MCX-IB15)91.2 (3-9/16) 116 (4-9/16) 96 (3-3/4) 30.6(1-3/16)M MCX-CA15120 (4-3/4) 120 (4-3/4) 105 (4-1/8)8MCX-C15/MCX-CA15MCX-C15/MCX-CA15qMAIN P.C.B.wFUNCTION (1) P.C.B.eSYSTEM (2) P.C.B.rLCDtFRONT COVER UNITyFUNCTION (2) P.C.B.I INTERNAL VIEWM Front ViewM Rear ViewG MCX-C15G MCX-CA15qwertyio!0!1uM Top ViewiD-AMP (1) P.C.B.oD-AMP (4) P.C.B.!0D-AMP (2) P.C.B.!1D-AMP (3) P.C.B.!2FRONT COVER UNITM Rear ViewG I/O Box (MCX-IB15)uSYSTEM (1) P.C.B.M Front View!29MCX-C15/MCX-CA15MCX-C15/MCX-CA15Fig. 2Fig. 1I MCX-C15 DISASSEMBLY PROCEDURES分解手順(Remove parts in the order as numbered.)* Be sure to disconnect the power cable from the AC outlet.(番号順部品取外。） AC電源、電源抜。1. 外方a) q4本、w2本、e1本外。（Fig.1）b) 後方、取外。（Fig.1）2. A、B外方a) r2本、t1本外。 （Fig.2）b) B取外。 （Fig.2）c) y2本外。 （Fig.2）d) A下方、取外。（Fig.2）1. Removal of Top Case.a) Remove 4 screws marked q, 2 screws marked wand 1 screw marked e. (Fig. 1)b) Remove the Top Case by sliding it rearward. (Fig. 1)2. Removal of Rear Panels A and Ba) Remove 2 screws marked r and 1 screw marked t.(Fig. 2)b) Remove the Rear Panel B. (Fig. 2)c) Remove 2 screws marked y. (Fig. 2)d) Remove the Rear Panel A by sliding it downward.(Fig. 2)qewTop CaseqyrtRear Panel AARear Panel BBMCX-C1510MCX-C15/MCX-CA15MCX-C15/MCX-CA15Fig. 33. MAIN P.C.B.外方a) CB202、CB203外。 （Fig.3）b) u4本外。 （Fig.3）c) CB204外、MAIN P.C.B.取外。 （Fig.3）4. FUNCTION （1） 、SYSTEM （2） P.C.B.外方a) i4本外。 （Fig.3）b） FUNCTION （1） P.C.B.持上。c) o2本外。 （Fig.3）d) FUNCTION （1） P.C.B.SYSTEM （2） P.C.B.取外。 （Fig.3）e) CB602外。 （Fig.3）5. 外方a) 外。 （Fig.3）b） !02本、!11本外。 （Fig.3）c) 外。 （Fig.3）3. Removal of MAIN P.C.B.a) Remove CB202 and CB203. (Fig. 3)b) Remove 4 screws marked u. (Fig. 3)c) Remove CB204 and MAIN P.C.B. can be removed.(Fig. 3)4. Removal of FUNCTION (1) P.C.B. and SYSTEM (2)P.C.B.a) Remove 4 screws marked i. (Fig. 3)b) Lift FUNCTION (1) P.C.B.c) Remove 2 screws marked o. (Fig. 3)d) Remove FUNCTION (1) P.C.B. and SYSTEM (2) P.C.B.(Fig. 3)e) Remove CB602. (Fig. 3)5. Removal of Front Unita) Remove the Front Cover Unit. (Fig.3)b) Remove 2 screws marked !0 and a screw marked !1.(Fig.3)c) Remove the Front Unit. (Fig.3)MCX-C15CB202MAIN P.C.B.CB204CB203CB602FUNCTION (1) P.C.B.SYSTEM (2) P.C.B.Front Cover UnitFront Unituio!0!0!111MCX-C15/MCX-CA15MCX-C15/MCX-CA15Fig. 5Fig. 66. FUNCTION （2） P.C.B.外方a) !22本外。 （Fig.4）b) !3外、Ass y取外。 （Fig.5）c) CB801、CB802、CB803外FUNCTION （2） P.C.B.取外。 （Fig.5）G I/O (MCX-IB15)1. 外方a）!42本、!52本外。 （Fig.6）b） 後方、取外。 （Fig.6）2. SYSTEM （1） P.C.B.外方a）!62本外。 （Fig.6）b） !74本外。 （Fig.6）c）SYSTEM (1) P.C.B.後方、取外。 （Fig.6）6. Removal of FUNCTION (2) P.C.B.a) Remove 2 screws marked !2. (Fig. 4)b) Remove 1 screw marked !3 to remove the Holder andButton Assy. (Fig. 5)c) Remove CB801, CB802 and CB803 and FUNCTION (2)P.C.B. can be removed. (Fig. 5)G I/O Box (MCX-IB15)1. Removal of Covera) Remove 2 screws marked !4 and 2 screws marked !5.(Fig. 6)b) Remove the Cover by sliding it rearward. (Fig. 6)2. Removal of SYSTEM (1) P.C.B.a) Remove 2 screws marked !6. (Fig. 6)b) Remove 4 screws marked !7. (Fig. 6)c) Remove SYSTEM (1) P.C.B. by sliding it rearward.(Fig. 6)!3!3LCDBut t on Ass yAss yHolderFUNCTION (2) P.C.B.CB802CB801CB803!7!4!5!6!5!4SYSTEM (1) P.C.B.Fig. 4!2MCX-C1512MCX-C15/MCX-CA15MCX-C15/MCX-CA15I MCX-CA15 DISASSEMBLY PROCEDURES分解手順(Remove parts in the order as numbered.)* Be sure to disconnect the power cable from the AC outlet.* Check the position of the Mode Switch and write it down.Be sure to set the mode switch back to the original posi-tion after servicing.(番号順部品取外。） AC電源、電源抜。 位置確認、。作業完了後位置元戻。1. 外方a) q4本、w2本外。 （Fig.1）b) 後方、取外。（Fig.1）Fig. 22. C，D外方a）e2本外。 （Fig.2）b） D取外。 （Fig.2）c) r4本外。 （Fig.2）d） C下方、取外。（Fig.2）Fig. 11. Removal of Top Case.a) Remove 4 screws marked q and 2 screws marked w.(Fig. 1)b) Remove the Top Case by sliding it rearward. (Fig. 1)2. Removal of Rear Panels C and Da) Remove 2 screws marked e. (Fig. 2)b) Remove the Rear Panel D. (Fig. 2)c) Remove 4 screws marked r. (Fig. 2)d) Remove the Rear Panel C by sliding it downward.(Fig. 2)qwTop CaseqeRear Panel CCRear Panel DDrMCX-CA1513MCX-C15/MCX-CA15MCX-C15/MCX-CA153.D-AMP （1） 、 （2） 、 （3） 、 （4） P.C.B.外方a) 外。 （Fig.3）b) t2本、y4本外。 （Fig.3）c）D-AMP （1） P.C.B.持上。d） CB101外。 （Fig.3）e）u4本外。 （Fig.3）f）D-AMP （2） 、 （4） P.C.B.持上。g） CB201外。 （Fig.3）h） D-AMP （2） 、 （4） P.C.B.取外。 （Fig.3）i) i4本外。 （Fig.3）j）D-AMP （1） 、 （3） P.C.B.取外。 （Fig.3）Fig. 33.