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Owner's Manual
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.
WARNING:
IMPORTANT:
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING:
IMPORTANT:
I CONTENTS
TO SERVICE PERSONNEL ...................................... 2~3
REAR PANELS .......................................................... 4~5
SPECIFICATIONS .......................................................... 6
INTERNAL VIEW ........................................................... 7
DISASSEMBLY PROCEDURES /
TROUBLE SHOOTING /
故障チェック方法 ................
1 0 0 8 6 9
DIGITAL POWER AMPLIFIER
Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
8~10
サービス時の注意事項 .....
........... 11~14
15~16
MX-D1
SERVICE MANUAL
IMPORTANT NOTICE
プロテクション情報 ..............................................................
IC DATA ................................................................. 19~21
BLOCK DIAGRAM ................................................. 22~23
PRINTED CIRCUIT BOARD .................................. 24~33
PIN CONNECTION DIAGRAM .................................... 34
SCHEMATIC DIAGRAM ........................................ 35~37
PARTS LIST ........................................................... 39~54
17~18
P.O.Box 1, Hamamatsu, Japan
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Summary of Contents for Yamaha MX-D1
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Page 1: Table Of Contents
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. -
Page 2: To Service Personnel
MX-D1 I TO SERVICE PERSONNEL 1. Critical Components Information AC LEAKAGE Components having special characteristics are marked s and WALL EQUIPMENT TESTER OR OUTLET UNDER TEST EQUIVALENT must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) - Page 3 MX-D1 About lead-free solder / 無鉛ハンダについて The foil side of all P.C.B.s used for this product are soldered この製品に使用されているすべての基板のハンダ面のハンダ付け with lead-free soldering material which is an alloy of には、Sn+Ag+Cu （錫+銀+銅） の合金である無鉛ハンダが使用さ Sn+Ag+Cu (tin + silver + copper). れています。 However, the surface mount devices on the component side ただし、MAIN P.C.B.部品面およびOPERATION P.C.B.部品面...
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Page 4: Front Panel
MX-D1 I FRONT PANEL I REAR PANELS U, C models Cover A model... - Page 5 MX-D1 B, G models T model K model J model...
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Page 6: Specifications
MX-D1 I SPECIFICATIONS / 参考仕様 Minimum RMS Output Power / Power Supply / 定格出力 電源電圧 (1 kHz, 1% THD) U, C models ........AC 120 V, 60 Hz U, C models (8 ohms) ......500 W + 500 W A model ..........AC 240 V, 50 Hz A, B, G, T, K, J models (4 ohms to 8 ohms) ... -
Page 7: Internal View
MX-D1 I INTERNAL VIEW 1 FUNCTION (1) P.C.B. 2 FUNCTION (4) P.C.B. 3 FUNCTION (3) P.C.B. 4 FUNCTION (6) P.C.B. 5 FUNCTION (2) P.C.B. 6 FUNCTION (7) P.C.B. 7 FUNCTION (5) P.C.B. 8 MAIN (R) P.C.B. 9 OPERATION (1) P.C.B. -
Page 8: Service Precautions
MX-D1 I SERVICE PRECAUTIONS / サービス時の注意事項 1. Safety measures 1. 安全対策 • Some internal parts in this product contain high voltages ・ この製品の内部には高電圧部分があり危険です。修理の際は、 and are dangerous. Be sure to take safety measures 絶縁性の手袋を使用するなどの安全対策を行ってください。 during servicing, such as wearing insulating gloves. - Page 9 MX-D1 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 5 k-ohms 2. Precautions for connection of measuring 2. 計測器接続時の注意 この製品はツインモノラル構成になっています。計測器を接続す instrument る際、Lch側を測定する場合はLch側のGNDに接続し、Rch側を The structure of this product is twin-monaural type. Connect 測定する場合はRch側のGNDに接続してください。...
- Page 10 MX-D1 3. Confirming insulation of FET 3. FETの絶縁確認 When the FETs (Q117 to Q120) of the MAIN P.C.B. were MAIN P.C.B.のFET （Q117∼Q120） を取り外した場合、組立後 removed, be sure to check using the tester that the metal に必ずテスターを使用してFET本体金属部分とFET取り付けネジ part of each FET itself is insulated from the FET mounting との間が絶縁されていることを確認してください。...
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Page 11: 分解手順
MX-D1 I DISASSEMBLY PROCEDURES / 分解手順 (Remove parts in the order as numbered.) （番号順に部品を取り外してください。） Disconnect the power cable from the AC outlet. AC電源コンセントから、電源コードを抜いてください。 1. Removal of Bottom Cover 1. ボトムカバーの外し方 a. Spread a soft cloth and place the unit upside down on it. - Page 12 MX-D1 4. Removal of MAIN (R) P.C.B. 4. MAIN （R） P.C.B.の外し方 a. Remove 5 screws (5) and 5 screws (6). (Fig. 3) のネジ5本、 のネジ5本を外します。 （Fig. 3） b. Remove the connectors (CB101 to CB108) on the MAIN b. MAIN （R） P.C.B.上のコネクター （CB101∼CB108） を外し...
- Page 13 MX-D1 7. Removal of FUNCTION (5) P.C.B. 7. FUNCTION （5） P.C.B.の外し方 a. Remove 4 screws (B). (Fig. 5) のネジ4本を外します。 （Fig. 5） b. Remove the FUNCTION (5) P.C.B. upward. b. FUNCTION （5） P.C.B.を上方に取り外します。 8. Removal of FUNCTION (4) P.C.B. 8. FUNCTION （4） P.C.B.の外し方...
- Page 14 MX-D1 9. Removal of FUNCTION (2), (3), (6) and (7) 9. FUNCTION （2） , （3） , （6） , （7） P.C.B.の外し方 a. MAIN （R） およびMAIN （L） P.C.B.上のコネクター （CB101） P.C.B.s を外します。 （Fig. 7） a. Remove the connector (CB101) on the MAIN (R) and b.
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Page 15: Troubleshooting
MX-D1 I TROUBLESHOOTING No Power or Power Power on but no shuts off immediately sound from SP With the power turned Refer to "SERVICE With the power turned Refer to "SERVICE off, discharge C196 – PRECAUTIONS" off, discharge C196 –... -
Page 16: 故障チェック方法
MX-D1 故障チェック方法 パワーSWを入れても 電源は入るが 電源がすぐに切れる SPから音が出ない 電源OFF状態で 電源OFF状態で 8ページ"サービス時の 8ページ"サービス時の C196∼C199、C222、 C196∼C199、C222、 注意事項"を参照 注意事項"を参照 C223を放電する C223を放電する 出力段コイル(L101) ショートしている FET （Q117∼Q120） の 初段のアナログアンプ に350kHzパルスが 部分不良 FETを交換 D-S間ショートか? 出ているか? オープンしている 電源出力は FET （Q117∼Q120） が オープンしているか? FETを交換 正常か? IC118、 IC119、 IC107 CB106を外す いずれかの不良... -
Page 17: Protection Information
MX-D1 I PROTECTION INFORMATION / プロテクション情報 It is possible to have the protection information displayed 本機に接続したPC上にプロテクション情報を表示することができ on a PC connected to this unit. ます。 Equipment required 必要なツール • PC with RS-232C serial port ・ RS-232Cシリアルポート付きPC • Display application software (Terminal software such as ・... - Page 18 MX-D1 5. The protection information as shown below is displayed 5. パソコン上に以下のようなプロテクション情報が表示されま on the PC screen. す。 Protection = PS PROTECTION R (or L) Protection = PS PROTECTION R (or L) : In case of PS protection ：PSプロテクションの場合 Protection = DC PS PROTECTION R (or L)
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Page 19: Ic Data
MX-D1 I IC DATA IC107: YDA133-E (MAIN P.C.B) Digital Audio Power Amplifier Controller 24 XO PLLC 23 XI Clock part 22 MCKIO 20 MSSEL 21 CKOUT AINM Digital – modulation AINP 19 HIP circuit Operational 18 HIN amplifier for integration... - Page 20 MX-D1 IC118, 119: YDA134-E (MAIN P.C.B) Digital Audio Power Amplifier Driver Pre Buffer part VREF 8 CDO VREF Generating circuit Off time 10 CDI generating circuit – 13 CKOUT Comparator for differential input 24 PVDD CKIN 23 OUTH AVDD AVDD...
- Page 21 MX-D1 IC701: M30624FGAFP (OPERATION P.C.B) IC701: M30624FGAFP (OPERATION P.C.B) 16 bit µ-COM 16 bit µ-COM Pin Pin function Function Name Detail of function Pin Pin function Function Name Detail of function P96/ANEX1/SOUT4 SOUT4 (Unconnected) 51 P43/A19 (Unconnected) P95/ANEX0/CLK4 CLK4 (Unconnected)
- Page 22 MX-D1 I BLOCK DIAGRAM (1/2) • See page 37 → SCHEMATIC DIAGRAM MAIN IC118 YDA134 Q117 Q118 IC110 • See page 35 → • See page 35 → 2.8 MHz SCHEMATIC DIAGRAM SCHEMATIC DIAGRAM Clock Input R195 FUNCTION FUNCTION Real-Time...
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Page 23: Block Diagram
MX-D1 I BLOCK DIAGRAM (2/2) • See page 37 → L ch Power Supply SCHEMATIC DIAGRAM MAIN D156, D158 D168 T101 Q126 For OP-Amps and LSI – IC129 J103~105 Q122 Driver (U, C, J models) D146 Q127 D148 C217 –B... - Page 24 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) FUNCTION (1) P. C. B. (Lead Type Device) J model U model (1st lot 50 sets only) OPERATION (1) +12M PDET +12S ･ Semiconductor Location AC IN MAIN (R) MAIN (L) MAIN (L) MAIN (R) Ref.
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Page 25: Printed Circuit Board
MX-D1 (U, C models) I PRINTED CIRCUIT BOARD (Foil side) POWER FUNCTION (1) P. C. B. (Lead Type Device) U, C, A, B, G, T, K models A, B, G, T, K models OPERATION (1) +12M PDET +12S ･ Semiconductor Location... - Page 26 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) FUNCTION (7) P. C. B. FUNCTION (3) P. C. B. (Lead Type Device) FUNCTION (6) P. C. B. (Lead Type Device) (Lead Type Device) UNBALANCE MUTE UNBAL BALANCE L BALANCE R PJSW MAIN (R) MAIN (L) FUNCTION (4) P.
- Page 27 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) FUNCTION (7) P. C. B. FUNCTION (3) P. C. B. (Surface Mount Device) FUNCTION (6) P. C. B. (Surface Mount Device) (Surface Mount Device) Circuit No. U, C A, B, G, T, K...
- Page 28 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) (Lead Type Device) OPERATION (1) P. C. B. MAIN (L) MAIN (R) MAIN (R) FUNCTION (1) MAIN (L) FUNCTION (2) FUNCTION (2) OPERATION (2) P. C. B. (Lead Type Device) STANDBY / ON ･...
- Page 29 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) (Surface Mount Device) OPERATION (1) P. C. B. Circuit No. U, C A, B, G, T, K J701 X: NOT USED O: USED / APPLICABLE OPERATION (2) P. C. B. (Surface Mount Device) ･...
- Page 30 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) OPERATION (1) MAIN (R), MAIN (L) P. C. B. (Lead Type Device) U, C, J models FUNCTION (1) FUNCTION (4) FUNCTION (5) FUNCTION (1) FUNCTION (4) FUNCTION (5) +15V SPRY +24R MGND -15V...
- Page 31 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) MAIN (R), MAIN (L) P. C. B. (Surface Mount Device) U, C, J models ･ Semiconductor Location The MAIN P.C.B. consists of 4 layer patterns (part surface pattern, inner Ref. No. Location Ref. No. Location Ref.
- Page 32 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) OPERATION (1) MAIN (R), MAIN (L) P. C. B. (Lead Type Device) A, B, G, T, K, models FUNCTION (1) FUNCTION (4) FUNCTION (5) FUNCTION (4) FUNCTION (1) FUNCTION (5) +15V SPRY +24R...
- Page 33 MX-D1 I PRINTED CIRCUIT BOARD (Foil side) MAIN (R), MAIN (L) P. C. B. (Surface Mount Device) A, B, G, T, K, models ･ Semiconductor Location The MAIN P.C.B. consists of 4 layer patterns (part surface pattern, inner Ref. No. Location Ref.
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Page 34: Pin Connection Diagram
MX-D1 I PIN CONNECTION DIAGRAM • ICs • Diodes 11EQS04 1SS355 AN78L12 LM61CIZ NJU7201L55 NJM78M05FA NJM78M15FA AG01A 1SS380 D1NL20U MA8027-L EL1LF-H5K MA8043-M Anode RL3LF014-302 MA8047-M Anode MA8051-M MA8062-L MA8075-M 1: GND MA8100-M Cathode 3: GND 2: OUT 2: VIN 3: IN... -
Page 35: Schematic Diagram
MX-D1 SCHEMATIC DIAGRAM (FUNCTION) INPUT AMP. 12.0 12.0 11.3 12.0 23.4 11.3 11.7 14.8 14.8 13.9 15.0 15.0 Common Line 13.9 13.6 基準ライン 13.6 Common Line 13.6 13.9 基準ライン -0.3 -0.3 -11.5 -13.7 -1.0 -1.0 -12.1 -15.0 -13.7 -14.3 -14.3 23.4... - Page 36 MX-D1 SCHEMATIC DIAGRAM (OPERATION) IC703: AN78L12 # All voltages are measured with a 10MΩ/V DC electronic volt meter. Voltage Regulator # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.
- Page 37 MX-D1 SCHEMATIC DIAGRAM (MAIN L, MAIN R) # All voltages are measured with a 10MΩ/V DC electronic volt meter. CAUTION! # Components having special characteristics are marked s and must be Point 4 TP194 - R223 (Power Off) To make the circuit operation easy to understand, the DC voltage value of each replaced with parts having specifications equal to those originally installed.
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Page 38: Parts List
MX-D1 PARTS LIST I ELECTRICAL PARTS I WARNING Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. ● 印のある部分は、 安全確保部品を示しています。 部品の交換が必要な場合、 パーツリス トに記載されている部品を使用してく ださい。 ● 部品価格ランクは、 予告なく変更することがあります。 ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS: C.A.EL.CHP... - Page 39 MX-D1 P.C.B. FUNCTION Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank WB976200 P.C.B. FUNCTION ＰＣＢ集成ファンク WB976300 P.C.B. FUNCTION ＰＣＢ集成ファンク WB976400 P.C.B. FUNCTION TKABG ＰＣＢ集成ファンク CB501 VB389900 CN.BS.PIN ベースピン CB502 VB389900 CN.BS.PIN ベースピン CB503 VB389800 CN.BS.PIN ベースピン CB504 VZ005700 TERM.
- Page 40 MX-D1 P.C.B. FUNCTION Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank C547 UM397100 C.EL 10uF ケミコン s C548 V6146600 C.CE.SAFTY 2200pF 250V 規格認定コン s C548 V6146500 C.CE.SAFTY 1000pF 250V TKABG 規格認定コン ＫＨ s C549 V6146600 C.CE.SAFTY 2200pF 250V 規格認定コン s C549 V6146500 C.CE.SAFTY...
- Page 41 MX-D1 P.C.B. FUNCTION Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank s D518 VR253700 DIODE.BRG S1NB20 1A 200V ＤＩブリッジ Ｘ４ D519 VT332900 DIODE 1SS355 ダイオード * s D520 V4756800 DIODE S1NB60 1.0A 600V Ｄｉスタック D521 VT332900 DIODE 1SS355 ダイオード...
- Page 42 MX-D1 P.C.B. FUNCTION Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank Q503 iA101590 TR 2SA1015 O,Y トランジスタ Q504 iA101590 TR 2SA1015 O,Y トランジスタ Q505 iA101590 TR 2SA1015 O,Y トランジスタ Q506 iA101590 TR 2SA1015 O,Y トランジスタ Q507 iC1815M0 TR 2SC1815 Y,GR トランジスタ...
- Page 43 MX-D1 P.C.B. FUNCTION & P.C.B. OPERATION Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank * s T501 X4477A00 TRANS TKABG サブトランス * s T502 X4037A00 TRANS サブトランス * s T502 X4133A00 TRANS サブトランス * s T502 X4134A00 TRANS TKABG サブトランス...
- Page 44 MX-D1 P.C.B. OPERATION & P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank Q720 VV655700 TR.DGT DTC144EKA デジタルトランジスタ 01 s Q722 VG805500 TR 2SC4391 R,S トランジスタ Q723 VV556500 TR 2SA1037K Q,R,S トランジスタ R765 HV755180 R.CAR.FP 180Ω 1/4W 不燃化カーボン抵抗...
- Page 45 MX-D1 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank C138 UR866100 C.EL ケミコン C140 UA654470 C.MYLAR 0.047uF マイラーコン C141 FU451150 C.MICA 15pF 500V マイカコン C142 UA653100 C.MYLAR 1000pF マイラーコン C148 UA652100 C.MYLAR 100pF マイラーコン C153 UR847100 C.EL 10uF ケミコン...
- Page 46 MX-D1 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank C246 UT553220 C.PP 2200pF 125V ＰＰコン C247 UT553220 C.PP 2200pF 125V ＰＰコン D101 VT332900 DIODE 1SS355 ダイオード D102 VT332900 DIODE 1SS355 ダイオード D103 VT332900 DIODE 1SS355 ダイオード D104...
- Page 47 MX-D1 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank D161 VT332900 DIODE 1SS355 ダイオード D162 VT332900 DIODE 1SS355 ダイオード D163 VT332900 DIODE 1SS355 ダイオード D164 VN478200 DIODE D1NL20U ダイオード * s D165 V8629800 DIODE AG01A WS ダイオード...
- Page 48 MX-D1 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank Q111 VV556400 TR 2SC2412K Q,R,S トランジスタ Q112 VV556500 TR 2SA1037K Q,R,S トランジスタ s Q113 VV556400 TR 2SC2412K Q,R,S トランジスタ s Q114 VV556400 TR 2SC2412K Q,R,S トランジスタ Q115 VV556400 TR 2SC2412K Q,R,S トランジスタ...
- Page 49 MX-D1 P.C.B. MAIN & Chip Parts Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank R223 HV753470 R.CAR.FP 4.7Ω 1/4W 不燃化カーボン抵抗 R228 HV758220 R.CAR.FP 220KΩ 1/4W 不燃化カーボン抵抗 R229 HV758220 R.CAR.FP 220KΩ 1/4W 不燃化カーボン抵抗 R244 HV756100 R.CAR.FP 1KΩ 1/4W 不燃化カーボン抵抗 R245 HV756100 R.CAR.FP...
- Page 50 MX-D1 Chip Parts Chip Parts Schm Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank Ref. PART NO. Description Remarks Markets 部 品 名 Rank RD356240 R.CHP 2.4KΩ 1/16W チップ抵抗 VK582700 R.MTL.CHP 510KΩ 1/10W チップ金被抵抗 RD356330 R.CHP 3.3KΩ 1/16W チップ抵抗 VK583400 R.MTL.CHP 1MΩ...
- Page 51 MX-D1 When removing or installing the pin jack, cover the nut with cloth and turn it with pliers so as not to cause damage to it. ピンジャックを取り外すまたは取り付ける場合、ナットを傷つけないよう I EXPLODED VIEW に布で覆いその上からペンチを使ってナットを回します。 Pliers Cloth ペンチ 布 1-110 2-15 2-13 2-11 2-110...
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Page 52: Mechanical Parts
MX-D1 I MECHANICAL PARTS Schm Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank Ref. PART NO. Description Remarks Markets 部 品 名 Rank WC342900 FRONT PANEL フロントパネル WB936400 SHOULDER WASHER BIVAR SW-031-145 ショルダーワッシャ WC343000 SIDE PANEL L サイドパネル Ｌ WD071400 COVER カバー... - Page 53 MX-D1 I HEATSINK/AMP I HEATSINK/PWR Q120 Q127 D133 Q117 Q126 Q119 D168 D132 Q118 Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank WD000000 SHEET, RADIATOR シート／ホウネツ V8234000 TRANSISTOR 1MBK50D 600V Q126,Q127 トランジスター Schm WB730100 DIODE BRIDGE LN25XB60 25A 600V D168 ダイオードスタック...