DISASSEMBLY PROCEDURES (分解手順)..........6 IC BLOCK DIAGRAM (ICブロック図) ............15 CIRCUIT BOARDS (シート基板図) ............15 INSPECTIONS (検査) ................23 PARTS LIST BLOCK & LEVEL DIAGRAM (ブロック&レベルダイアグラム) CIRCUIT DIAGRAM (回路図) u163 011901 200805-72450 HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. 08.06 http://www.xiaoyu163.com...
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IMPORTANT NOTICE This 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 therefore not been restated.
MSR250 3 7 63 1515 0 PERFORMANCE GRAPH (特性図) Frequency Response Frequency PANEL LAYOUT (パネルレイアウト) L 13942296513 INPUT 1 jacks MIC/LINE switch INPUT 2/3 jacks LINK OUT jack EQ controls LEVEL controls LIMITER indicator POWER indicator POWER switch AC IN connector INPUT 1端子...
MSR250 3 7 63 1515 0 DISASSEMBLY PROCEDURES (分解手順) フロントグリルAss’ y Front Grille Assembly (Time required: About 1 minute) (所要時間:約1分) Remove the four (4) screws marked [100]. The front [100] のネジ4本を外して、フロントグリルAss’ yを外し ます。 (図1) grille assembly can then be removed. (Fig. 1) スピーカLF (...
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MSR250 3 7 63 1515 0 スピーカHF ( ツィーター) Speaker HF (Tweeter) (Time required: About 4 minutes) (所要時間:約4分) Separate the front cabinet unit and the rear cabinet unit. フロントキャビネット部とリアキャビネット部を別け (See procedure 3.) ます。 (3項参照) Remove the two (2) screws marked [46]. The speaker [46]...
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MSR250 3 7 63 1515 0 アンプAss’ y Amplifier Assembly (Time required: About 2 minute) (所要時間:約2分) Remove the ten (10) screws marked [30]. The amplifier [30] のネジ10本を外し、アンプAss’ yを外します。 (図5) assembly can then be removed. (Fig. 5) MOTHERシートのコネクターCN546 ( 2P) に接続されて...
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MSR250 3 7 63 1515 0 8. INPUTシート INPUT circuit board (Time required: About 6 minutes) (所要時間:約6分) Remove the amplifier assembly. (See procedure 6.) アンプAss’ yを外します。 (6項参照) Remove the MOTHER circuit board. (See procedure 7.) MOTHERシートを外します。 (7項参照) Remove the three (3) screws marked [130], four (4) [130]...
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MSR250 3 7 63 1515 0 CONTROLシート CONTROL circuit board (Time required: About 8 minutes) (所要時間:約8分) Remove the amplifier assembly. (See procedure 6.) アンプAss’ yを外します。 (6項参照) Remove the MOTHER circuit board. (See procedure 7.) MOTHERシートを外します。 (7項参照) Remove the INPUT circuit board. (See procedure 8.) INPUTシートを外します。...
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MSR250 3 7 63 1515 0 AMPシート AMP Circuit Board (Time required: About 7 minutes) (所要時間:約7分) 10-1 Remove the amplifier assembly. (See procedure 6.) 10-1 アンプAss’ yを外します。 (6項参照) 10-2 Remove the MOTHER circuit board. (See procedure 7.) 10-2 MOTHERシートを外します。 (7項参照)...
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MSR250 3 7 63 1515 0 ファン (所要時間:約3分) FAN (Time required: About 3 minutes) 12-1 Remove the amplifier assembly. (See procedure 6.) 12-1 アンプAss’ yを外します。 (6項参照) 12-2 Disconnect the connector assembly connected to the 12-2 POWER-bシートのコネクターCN803 ( 2P) に接続されて...
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MSR250 3 7 63 1515 0 電源トランス、POWER-aシート Power Transformer and POWER-a Circuit Board (Time required: About 5 minutes) (所要時間:約5分) 13-1 Remove the amplifier assembly. (See procedure 6.) 13-1 アンプAss’ yを外します。 (6項参照) 13-2 Disconnect the connector assemblies connected to the 13-2 POWER-aシートのコネクターCN810 (...
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MSR250 3 7 63 1515 0 電源スイッチ、ACインレット Power Switch, AC Inlet (Time required: About 7 minutes) (所要時間:約7分) 14-1 Remove the amplifier assembly. (See procedure 6.) 14-1 アンプAss’ yを外します。 (6項参照) 14-2 Remove the two (2) connector assemblies (connector 14-2 電源スイッチとACインレットに半田付けされている束線...
MSR250 3 7 63 1515 0 IC BLOCK DIAGRAM (ICブロック図) • NJM2068M-D TE1 (AAX62750) Dual Operational Amplifier INPUT: IC101, 102 CONTROL: IC104, 302, 303, 304 MOTHER: IC541 +DC Voltage Output A Supply Inverting Output B Input A Non-Inverting Inverting...
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MSR250 3 7 63 1515 0 • CONTROL Circuit Board LEVEL HIGH LEVEL -3 +3 -6 +6 0 10 to INPUT CN25 HIGH LEVEL L 13942296513 -3 +3 -6 +6 0 10 to POWER-b to MOTHER CN802 CN542 Component side (部品側)...
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MSR250 3 7 63 1515 0 • INPUT Circuit Board LINK OUT LINE 3 LINE 2 INPUT 1 L 13942296513 LINE to CONTROL CN26 Component side (部品側) u163 Pattern side (パターン側) 477286 http://www.xiaoyu163.com...
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MSR250 3 7 63 1515 0 • NETWORK Circuit Board to MOTHER CN546 L 13942296513 to Speaker HF (TWEETER) to Speaker LF (WOOFER) Component side (部品側) u163 475008 http://www.xiaoyu163.com...
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MSR250 3 7 63 1515 0 • NETWORK Circuit Board L 13942296513 Pattern side (パターン側) u163 475008 http://www.xiaoyu163.com...
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MSR250 3 7 63 1515 0 • MOTHER Circuit Board to POWER-b to NETWORK CN804 to CONTROL CN24 L 13942296513 to AMP CN1100 to AMP CN1101 u163 Component side (部品側) Pattern side (パターン側) 477286 http://www.xiaoyu163.com...
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MSR250 3 7 63 1515 0 • POWER-a Circuit Board No copper foil is on component side. (部品面にはパターンはありません。 ) to POWER SW to POWER-b CN801 L 13942296513 to AC IN Component side (部品側) u163 Pattern side (パターン側) 477285 http://www.xiaoyu163.com...
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MSR250 3 7 63 1515 0 • POWER-b Circuit Board No copper foil is on component side. (部品面にはパターンはありません。 ) to CONTROL to MOTHER to FAN CN541 L 13942296513 to POWER-a CN801B Component side (部品側) u163 Pattern side (パターン側) 477285...
MSR250 3 7 63 1515 0 INSPECTIONS (検査) Test Conditions (試験条件) (1) Measuring Voltage (測定電圧) : AC 100 V 50/60 Hz (J) AC 110 V 60 Hz (T) AC 120 V 60 Hz (U) AC 220 V 50 Hz (O)
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MSR250 3 7 63 1515 0 ITEM INTPUT CONDITIONS OUTPUT CONDITIONS NOMINAL LIMIT (項目) (入力条件) (出力条件) (標準値) (限界値) -3.0 ± 2 dB Tone-control INPUT: 1, 2 (Each) REF: 775 mV LINK OUT -3.0 dB (トーンコントロール特性) LOW VR: MIN. Load: 10 kΩ...
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MSR250 3 7 63 1515 0 PARTS LIST I CONTENTS (目次) OVERALL ASSEMBLY (総組立) ............2 AMPLIFIER ASSEMBLY (アンプAss’ y) ..........4 ELECTRICAL PARTS (電気部品) ............6 Notes: DESTINATION ABBREVIATIONS L 13942296513 Australian model South African model British model...
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MSR250 3 7 63 1515 0 OVERALL ASSEMBLY (総組立) O model Amplifier assembly (アンプAss'y) : See page 4. E model Network assembly (ネットワークAss'y) L 13942296513 Rear cabinet assembly (リアキャビネットAss'y) Rear cabinet unit (リアキャビネット部) Front cabinet assembly (フロントキャビネットAss'y) u163 Front cabinet unit Front grille assembly (フロントキャビネット部)...
MSR250 3 7 6 3 1 5 1 5 0 CIRCUIT DIAGRAM 1/5 (INPUT) INPUT to CONTROL_CN26 <P.5: A2> 1 3 9 4 2 2 9 6 5 1 3 w w w See parts list for details of circuit board component parts.