Yamaha-IPA8200-pwr-sm 维修电路原理图.pdf

SERVICE MANUALPOWER AMPLIFIERPA011943 CONTENTS （目次）SPECIFICATIONS .3仕様 .4DIMENSIONS （寸法図） .5PANEL LAYOUT （） .6CIRCUIT BOARD LAYOUT （） .7SERVICE PRECAUTIONS （時注意） .8DISASSEMBLY PROCEDURES （分解手順） .11IC BLOCK DIAGRAM （IC 図） .22CIRCUIT BOARDS （基板図） .23INSPECTIONS .43検査 .45ADJUSTMENT OF AMP circuit board （AMP 調整） .46PARTS LIST IC & DIODE FIGURES WIRING DIAGRAM BLOCK DIAGRAM CIRCUIT DIAGRAM 200910-265650HAMAMATSU, JAPANCopyright (c) Yamaha Corporation. All rights reserved. YMW 09.11RadioFans.CN 收音机爱 好者资料库 WARNING （注意）Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. 印商品、安全維持重要部品。交換場合、安全必指定部品使用。IMPORTANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and CordWARNING: THIS APPARATUS MUST BE EARTHEDIMPORTANT. The wires in this mains lead are coloured in accordance with the following code:GREEN-AND-YELLOW: EARTHBLUE: NEUTRALBROWN: LIVEAs the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safety earth symbol or colored GREEN or colored GREEN and YELLOW.The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.WARNING: This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.IMPORTANT NOTICEThis 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 already known and understood by the users, and have there-fore not been restated.WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruc-tion of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service repre-sentative.IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certification, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service depart-ments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor s Service Divi-sion.WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.IPA82002RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONSIPA82003 仕様IPA82004 DIMENSIONS （寸法図）480 (18-7/8)377.7 (14-7/8)406.5 (16)Unit: mm (inch)単位: mm88(3-7/16)IPA82005Security cover（） Front Panel （） Rear Panel （） PANEL LAYOUT （） POWER switch and indicator PROTECT indicator CLIP indicator SIGNAL indicator Attenuator MUTE indicator INPUT connectors SPEAKERS connectors MODE switches(STEREO mode, BRIDGE mode, PARALLEL mode) GAIN switch(+4 dBu, 26 dB, 32 dB) HPF switch Ground screw AC inletPOWER、 PROTECT CLIP SIGNAL MUTE INPUT 端子 SPEAKERS 端子 MODE （STEREO 、BRIDGE 、PARALLEL ） GAIN （+4 dBu、26 dB、32 dB） HPF 用 AC MUTE switch PARALLEL indicator BRIDGE indicator10 Screw holes for security cover11 Air intakes MUTE PARALLEL BRIDGE 10用穴11 吸気口IPA82006 CIRCUIT BOARD LAYOUT （）Rear Panel （）(CH D)Top （上側）FrontRearBottom （下側）Front Panel （）MOTHER ADMOTHER EHINPUT POWERREARREARCONNECTORCONNECTORFRONTLEDFRONTLEDAMP(CH C)AMP(CH B)AMP(CH A)AMP(CH H)AMP(CH G)AMP(CH F)AMP(CH E)AMP(CH GH)POWER(CH CD)POWER(CH AB)POWER(CH EF)POWERTop （上側）Bottom （下側）IPA82007D972C9801220 ohms/10WREARFRONT SERVICE PRECAUTIONS （時注意）Safety measures Some component parts on the INPUT POWER circuit board and POWER circuit boards maintain a high voltage even when the power is switched off.For this reason to avoid an electrical shock, do not touch the upper metallic part of the following capacitors until the remaining voltage has discharged.Discharging MethodBefore starting the service work, connect discharging resistors (220 ohms 10W) to the terminals indicated in the figure below to discharge electricity. (13 points)The required discharging time is about 10 seconds per each. Check that the DC voltage between the terminals measures close to 0 (zero) volts using a multi-meter to make sure that the discharge is completed.安全対策 INPUT POWER 、POWER 部品一部電源 OFF 状態高電圧残。感電防止、残電圧放電下記上部金属部分触。放電方法修理作業始前、放電抵抗（220 、10 W）下図示放電用端子間接続。 （13 箇所）放電必要時間各約 10 秒。放電完了確認、端子間電圧（）。INPUT POWER cricuit boardINPUT POWER circuit boardCapacitors /Discharging point /放電箇所C980D972: + pin D972: - pinPOWER circuit board x 4Capacitors /Discharging point /放電箇所C912, C913D904: cathode D901: - pinC914Between both terminals of R922C915Between both terminals of R923IPA82008D972C9801220 ohms/10WPOWER circuit board x 4INPUT POWER circuit diagramD901R922D904C912C913C914220 ohms/10W3R92342220 ohms/10W220 ohms/10WC915IPA82009POWER circuit diagram x 4C912, C913220 ohms/10WC915C914220 ohms/10W220 ohms/10WR922D901D9043R92342IPA820010 DISASSEMBLY PROCEDURES （分解手順）92: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND94: BIND HEAD TAPPING SCREW-B 4x8 NI-BL (WP183100) B BINDFig. 1 （図 1）1. Top Cover and L Angles(Time required: about 3 minutes)1-1. Remove the thirteen (13) screws marked 92. The top cover can then be removed. (Fig. 1)1-2. Remove the six (6) screws marked 94. The two (2) L angles can then be removed. (Fig. 1)1. 、L （所要時間：約 3 分）1-1. 92 13 本外、外。（図 1）1-2. 94 6 本外、 L 2 個外。（図 1）Top cover L angleLL angleL9292929294949494IPA8200112. AMP Circuit Boards(Time required: about 7 minutes)2-1. Remove the top cover. (See procedure 1.)2-2. Remove the two (2) screws marked 62I, the bracket clip and the shield cover. (Fig. 2)2-3. Remove the screw marked 62A. The AMP circuit board (channel A) can then be removed. (Fig. 2)2-4. In the same manner, the AMP circuit boards (channel B, C, D, E, F, G, H) can then be removed. (Fig. 2)2. AMP （所要時間：約 7 分）2-1. 外。 （1 項参照）2-2. 62I 2 本、外。 （図 2）2-3. 62A外、AMP （ A）外。 （図 2）2-4. 同様方法、 AMP （ B、 C、 D、 E、F、G、H）外。 （図 2）62A: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62B: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62C: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62D: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62E: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62F: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62G: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62H: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND62I: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BINDFig. 2 （図 2）Shield coverBracket clip 62I62A(CH A)62C62B62D62F62E62G62H62IAMP (CH C)AMP (CH D)AMP (CH B)AMP (CH F)AMP (CH E)AMP (CH H)AMP (CH G)AMP IPA820012Bracket clip 76A76B76B76A76C76C76D76D(CH AB)POWER (CH CD)POWER (CH GH)POWER (CH EF)POWER SpacersSpacers3. POWER （所要時間：約 6 分）3-1. 外。 （1 項参照）3-2. 76A 4 本、外。解除、POWER （A-B）外。 （図 3）3-3. 76B 4 本外。解除、POWER （ C-D） 外。 （図 3）3-4. 同様方法、POWER （ E-F、G-H）外。 （図 3）3. POWER Circuit Boards(Time required: about 6 minutes)3-1. Remove the top cover. (See procedure 1.)3-2. Remove the four (4) screws marked 76A and the bracket clip. Release the spacer. The POWER circuit board (channel A-B) can then be removed. (Fig. 3)3-3. Remove the four (4) screws marked 76B. Release the spacer. The POWER circuit board (channel C-D) can then be removed. (Fig. 3)3-4. In the same manner, the POWER circuit boards (channel E-F, G-H) can then be removed. (Fig. 3)76A: BIND HEAD TAPPING SCREW-B 3.0 x16 NI-BL (WT892700) B BIND76B: BIND HEAD TAPPING SCREW-B 3.0 x16 NI-BL (WT892700) B BIND76C: BIND HEAD TAPPING SCREW-B 3.0 x16 NI-BL (WT892700) B BIND76D: BIND HEAD TAPPING SCREW-B 3.0 x16 NI-BL (WT892700) B BINDFig. 3 （図 3）IPA820013Bracket clip PWB spacers基板Insulation sheet F絶縁 F72A62BMOTHER ADConnector assembly束線Connector assembly束線Connector assembly束線4. MOTHER A-D （所要時間：約 8 分）4-1. 外。 （1 項参照）4-2. AMP （ A、B、C、D）外。（2 項参照）4-3. POWER （ A-B、 C-D）外。（3 項参照）4-4. 72A、絶縁 F 外。 （図 4）4-5. 62B 、 外 、MOTHER A-D 外。 （図 4）注意： 基板 4 個、MOTHER A-D 構成部品。MOTHER A-D 交換際、基板 4 個古外。新取付。4. MOTHER A-D circuit board(Time required: about 8 minutes)4-1. Remove the top cover. (See procedure 1.)4-2. Remove the AMP circuit boards (channel A, B, C, D). (See procedure 2.)4-3. Remove the POWER circuit boards (channel A-B, C-D). (See procedure 3.)4-4. Remove the screw marked 72A and the insulation sheet F. (Fig. 4)4-5. Remove the screw marked 62B and the bracket clip. The MOTHER A-D circuit board can then be removed. (Fig. 4)Note: The four (4) PWB spacers are not component parts of the MOTHER A-D circuit board. When replacing the MOTHER A-D circuit board, remove them from old circuit board and install them to new circuit board.62B: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND72A: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BINDFig. 4 （図 4）IPA820014Bracket clip PWB spacers基板Insulation sheet E絶縁 E62C72BMOTHER EHConnector assembly束線Connector assembly束線5. MOTHER E-H （所要時間：約 8 分）5-1. 外。 （1 項参照）5-2. AMP （ E、F、G、H）外。（2 項参照）5-3. POWER （ E-F、 G-H）外。（3 項参照）5-4. 72B、絶縁 E 外。 （図 5）5-5. 62C 2 本、 2 個外、MOTHER E-H 外。 （図 5）注意： 基板 4 個、MOTHER E-H 構成部品。MOTHER E-H 交換際、基板 4 個古外。新取付。5. MOTHER E-H circuit board(Time required: about 8 minutes)5-1. Remove the top cover. (See procedure 1.)5-2. Remove the AMP circuit boards (channel E, F, G, H). (See procedure 2.)5-3. Remove the POWER circuit boards (channel E-F, G-H). (See procedure 3.)5-4. Remove the screw marked 72B and the insulation sheet E. (Fig. 5)5-5. Remove the two (2) screws marked 62C and the two (2) bracket clips. The MOTHER E-H circuit board can then be removed. (Fig. 5)Note: The four (4) PWB spacers are not component parts of the MOTHER E-H circuit board. When replacing the MOTHER E-H circuit board, remove them from old circuit board and install them to new circuit board.Fig. 5 （図 5）62C: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND72B: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BINDIPA820015PWB spacers基板Insulation sheet F絶縁FInsulation sheet E絶縁 E72B4372AINPUT POWERConnector assembly束線Connector assembly束線Connector assembly束線6. INPUT POWER Circuit Board(Time required: about 9 minutes)6-1. Remove the top cover. (See procedure 1.)6-2. Remove all the POWER circuit boards.(See procedure 3.)6-3. Remove the screw marked 72A and the insulation sheet F. (Fig. 6)6-4. Remove the screw marked 72B and the insulation sheet E. (Fig. 6)6-5. Remove the two (2) screws marked 43. (Fig. 6)6-6. Disconnect all the connector assemblies from the INPUT POWER circuit board. The INPUT POWER circuit board can then be removed. (Fig. 6)Note: The eight (8) PWB spacers are not component parts of the INPUT POWER circuit board. When replacing the INPUT POWER circuit board, remove them from old circuit board and install them to new circuit board.6. INPUT POWER （所要時間：約 9 分）6-1. 外。 （1 項参照）6-2. POWER 外。 （3 項参照）6-3. 72A、絶縁 F 外。 （図 6）6-4. 72B、絶縁 E 外。 （図 6）6-5. 43 2 本外。 （図 6）6-6. INPUT POWER 束線外、INPUT POWER 外。 （図 6）注意： 8 個基板、INPUT POWER 構成部品。INPUT POWER 交換際、古基板取外新取付。43: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND72A: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BIND72B: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000) B BINDFig. 6 （図 6）IPA8200167. REAR （所要時間：約 5 分）7-1. 外。 （1 項参照）7-2. 25 8 本、24 4 本外。 （図 7）7-3. REAR 束線外、REAR 六角 4 本、 4 本共外。（図 7）注意： 六角 4 本、 4 本、REAR 構成部品。REAR 交換際、古六角 4 本、 4本外、新取付。7. REAR Circuit Board(Time required: about 5 minutes)7-1. Remove the top cover. (See procedure 1.)7-2. Remove the eight (8) screws marked 25 and the four (4) screws marked 24. (Fig. 7)7-3. Disconnect all the connector assemblies from the REAR circuit board. The REAR circuit board can then be removed together with the four (4) hexagonal spacers and four (4) screws. (Fig. 7)Note: The four (4) hexagonal spacers and four (4) screws are not component parts of the REAR circuit board. When replacing the REAR circuit board, remove them from old circuit board and install them to new circuit board.24: BIND HEAD SCREW 3x6 MFZN2B3 (WS522500) 小 BIND25: PAN HEAD SCREW M2.6x6 NI-BL (WS522400) 小 PANFig. 7 （図 7）Hexagonal spacers六角ScrewsScrews25252424REARConnector assemblies束線IPA820017AC inlet assemblyAC AssyLug terminal端子Bracket terminal Screws1315Toothed lock washer歯付 CONNECTORHookConnector assembly束線8. CONNECTOR Circuit Board(Time required: about 13 minutes)8-1. Remove the top cover. (See procedure 1.)8-2. Remove all the POWER circuit boards.(See procedure 3.)8-3. Remove the INPUT POWER circuit board.(See procedure 6.)8-4. Remove the REAR circuit board. (See procedure 7.)8-5. Remove the two (2) screws marked 13. (Fig. 8)8-6. Disconnect the connector assemblies from the CONNECTOR circuit board. The CONNECTOR circuit board can then be removed together with the two (2) bracket terminals and two (2) screws. (Fig. 8)Note: The two (2) bracket terminals and two (2) screws are not component parts of the CONNECTOR circuit board. When replacing the CONNECTOR circuit board, remove them from old circuit board and install them to new circuit board.9. AC Inlet Assembly(Time required: about 6 minutes)9-1. Remove the top cover. (See procedure 1.)9-2. Remove the AMP circuit board (channel D).(See procedure 2.)9-3. Remove the screw marked 15, and remove the lug terminal of the AC inlet assembly and the toothed lock washer. (Fig. 8)9-4. Disconnect the AC inlet connector assembly connector from the INPUT POWER circuit board. (Fig. 8)9-5. Release the two (2) hooks of the AC inlet. The AC inlet assembly can then be removed. (Fig. 8)8. CONNECTOR （所要時間：約 13 分）8-1. 外。 （1 項参照）8-2. POWER 外。 （3 項参照）8-3. INPUT POWER 外。 （6 項参照）8-4. REAR 外。 （7 項参照）8-5. 13 2 本外。 （図 8）8-6. CONNECTOR 束線外、CONNECTOR 2 個、 2 本共外。 （図 8）注意： 2 個、 2 本 、CONNECTOR 構成部品。CONNECTOR 交換際、古 2 個、 2 本外、新取付。9. AC Assy（所要時間：約 6 分）9-1.