Yamaha MSP7 STUDIO User manual

SERVICE MANUAL
SPECIFICATIONS(総合仕様)..................................................................... 3
DIMENSIONS(寸法図).............................................................................. 4
PANEL LAYOUT(パネルレイアウト)......................................................... 5
CIRCUIT BOARD LAYOUT(ユニットレイアウト).................................... 6
DISASSEMBLY PROCEDURES(分解手順)............................................... 7
CIRCUIT BOARDS(シート基板図)........................................................... 11
INSPECTIONS(検査)............................................................................... 16
BLOCK DIAGRAM(ブロックダイアグラム)............................................ 18
CIRCUIT DIAGRAM(回路図)................................................................... 19
PARTS LIST
■CONTENTS(目次)
PA 011845
Copyright (c) Yamaha Corporation. All rights reserved. 06.11
HAMAMATSU, JAPAN
200612-66150
このサービスマニュアルはエコパルプ
(ECF:無塩素系漂白パルプ)を使用しています。
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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MSP7 STUDIO
2
■WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those originally
installed.
印の部品は、安全を維持するために重要な部品です。交換する場合は、安全のために必ず指定の部品をご使用ください。
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.
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
representative.
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
departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specifica-
tion are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor’s Service
Division.
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.
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 Welfare Agency (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 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 NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT. The wires in this mains lead are coloured in accordance with the following code:
GREEN-AND-YELLOW: EARTH
BLUE: NEUTRAL
BROWN: LIVE
As 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.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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MSP7 STUDIO
3
■SPECIFICATIONS(総合仕様)
総合仕様
形式 .................. バイ・アンプ2ウェイパワード・スピーカー
クロスオーバー周波数 ............................................... 2.5kHz
LF:30dB/oct、HF:30dB/oct
再生周波数帯域 ................................ 45Hz〜40kHz(-10dB)
最大出力音圧レベル ............................ 106dB、1monAxis
最大外形寸法(W×H×D)......................218x330x235mm
質量 ............................................................................. 12.2kg
防磁型 .............................................................................. Yes
スピーカー部
スピーカーユニット LF ...................... 16cmコーン(防磁型)
HF .................... 2.5cmドーム(防磁型)
エンクロージャー 方式 .................................... バスレフ型
材質 .................................................. PP
アンプ部
定格最大出力* ........................................................ LF:80W
THD=0.05%、RL=4Ω
HF:50W
THD=0.05%、RL=6Ω
S/N、IHF-Afilter ........................... ≧99dB、LEVEL=Max.
入力感度 XLR-3-31 .... +4dBu、LEVEL=Center
-6dBu、LEVEL=Max.
入力端子、インピーダンス.... XLR-3-31(balanced)、10kΩ
コントロール レベルコントロール ......... 31Positions
DetenttypeVR
(Min.=-∞Attenuation)
LOWCUTスイッチ .................. FLAT/
80Hz(12dB/oct)/
100Hz(12dB/oct)
HIGHTRIM ....................+1.5/0/-1.5dB
at15kHz
LOWTRIM ................ +1.5/0/-1.5/-3dB
at45Hz
POWERswitch ....................... ON/OFF
インジケーター LED ............................緑色:PowerOn
赤:Clipping
消費電力 ....................................................................... 100W
電源コード
長さ ............................................................................... 2.5m
付属品
電源コード、ゴム脚(2個)
General Specifications
Type ..................................... Biamp 2-way Powered Speaker
Crossover Frequency ................................................ 2.5 kHz
LF: 30 dB/oct, HF: 30 dB/oct
Overall Frequency Response .......... 45 Hz - 40 kHz (-10 dB)
Maximum Output Level .......................... 106 dB, 1 m on Axis
Dimensions (W x H x D) ........................218 x 330 x 235 mm
(8-9/16” x 13” x 9-1/4”)
Weight ......................................................................... 12.2 kg
Magnetic Shielding ........................................................... Yes
Speaker Section
Components LF ......................................................6.5” cone
HF .................................................... 1.0” dome
Enclosure Type .............................................. Bass-Reflex
Material ....................................................... PP
Amplifier Section
Output Power* .......................................................... LF: 80 W
THD = 0.05 %, RL = 4 Ω
HF: 50 W
THD = 0.05 %, RL = 6 Ω
S/N, IHF-A filter ................................≥99 dB, LEVEL = Max.
Input Sensitivity
XLR-3-31 .................. +4 dBu, LEVEL = Center
-6 dBu, LEVEL = Max.
Input Connectors, Impedance
XLR-3-31 (balanced), 10 kΩ
Controls LEVEL control .... 31 Positions Detent type VR
(Min. = - ∞Attenuation)
LOW CUT switch .... FLAT / 80 Hz (12 dB/oct) /
100 Hz (12 dB/oct)
HIGH TRIM ............... +1.5/0/-1.5 dB at 15 kHz
LOW TRIM.............. +1.5/0/-1.5/-3 dB at 45 Hz
POWER switch ................................... ON/OFF
Indicators LED ...................................... Green: Power On
Red: Clipping
Power Consumption..................................................... 100 W
AC Code
Length ........................................................................... 2.5 m
Accessories
AC cord x 1, Non-skid pads x 2
* These specifications apply to rated power supplies of 120,
230 and 240 V.
* これらの規格値は定格電圧100V供給時に適用されます。
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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MSP7 STUDIO
4
218 (8-9/16")
160*
20*
330 (13")
35 120
235 (9-1/4")
*Non-skid pad positions.(ゴム脚貼付位置)
(For mounting bracket
(ブラケット用)
)
2-M8
■DIMENSIONS(寸法図)
Unit: mm
単位:mm
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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MSP7 STUDIO
5
■PANEL LAYOUT(パネルレイアウト)
• Front Panel
(フロントパネル)
1
2
3
4
5
6
7
8
POWER indicator
POWER switch
AC IN connector
LOW TRIM switch
HIGH TRIM switch
LOW CUT switch
INPUT connector
LEVEL control
5
2
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4
7
8
6
1
• Rear Panel
(リアパネル)
1
2
3
4
5
6
7
8
POWERインジケーター
POWERスイッチ
ACIN端子
LOWTRIMスイッチ
HIGHTRIMスイッチ
LOWCUTスイッチ
INPUT端子
LEVELコントロール
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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MSP7 STUDIO
6
■CIRCUIT BOARD LAYOUT(ユニットレイアウト)
Power
Transformer
(電源トランス)
AMP
LED
INPUT
TRANS
Tweeter
(ツイータ)
Woofer
(ウーファー)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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MSP7 STUDIO
7
■DISASSEMBLY PROCEDURE(分解手順)
Fig. 1(図1)
Fig. 2(図2)
3. Tweeter (Time required: About 3 minutes)
3-1 Remove the rear panel assembly. (See procedure 2)
3-2 Remove the four (4) screws marked [A].
The tweeter can then be removed. (Fig. 3)
1. ウーファー(所要時間:約1分)
1-1 [22 0 ]の6角穴付ネジ4本を外し、ウーファーとウー
ファーリングを外します。(図1)
2. リアパネルAssy(所要時間:約2分)
2-1 [230]のネジ12本と[260]のスプリングワッシャー12個
を外し、リアパネルAssyを外します。(図2)
[230]: Bind Head Tapping Screw-P 5x25 (WJ286300) +バインドP
タイト
[260]: Spring Washer M5xM8.9xt1.0 (WJ478800) スプリングワッ
シャー
[220]
Woofer
(ウーファー)
Woofer Ring
(ウーファーリング)
[220]
Rear Panel Assembly
(リアパネルAss'y)
[230], [260]
[230], [260] [230], [260]
[260]
[230]
1. Woofer (Time required: About 1 minute)
1-1 Remove the four (4) hexagonal socket screws marked
[220]. The woofer and woofer ring can then be removed.
(Fig. 1)
2. Rear panel Assembly
(Time required: About 2 minutes)
2-1 Remove the twelve (12) screws marked [230] and twelve
(12) spring washers marked [260].
The rear panel assembly can then be removed. (Fig. 2)
3. ツィータ(所要時間:約3分)
3-1 リアパネルAssyを外します。(2項参照)
3-2 [A]のネジ4本を外し、ツィータを外します。(図3)
[220]: Hexagonal Socket Tapping Screw-P 4x20 (WG341100) 6角
穴付Pタイト
Fig. 3(図3)
[A] [A]
Tweeter
(ツイータ)
Rear view
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TEL 13942296513 QQ 376315150 892498299
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MSP7 STUDIO
8
[ G ]
[ G ]
[ F ]
[ G ]
AMP
Fig. 6(図6)
TRANS
Power
Transformer
(電源トランス)
[B]
[C]
[B]
Fig. 4(図4) Fig. 5(図5)
Transformer Bracket
(トランス金具)
[ D ]
[ D ]
[ E ] [ D ]
4. Power Transformer, TRANS Circuit Board
(Time required: About 3 minutes)
4-1 Remove the rear panel assembly. (See procedure 2)
4-2 Remove the three (3) screws marked [B] and screw
marked [C]. The power transformer with TRANS circuit
board can then be removed. (Fig. 4)
4-3 Unsolder the power transformer mounting solder (9 lo-
cations) and separate the power transformer from the
TRANS circuit board.
* The power transformer is not a component of the
TRANS circuit board.
4. 電源トランス、TRANSシート
(所要時間:約3分)
4-1 リアパネルAssyを外します。(2項参照)
4-2 [B]のネジ3本、[C]のネジを外し、電源トランスと
TRANSシートを外します。(図4)
4-3 電源トランス取付部分のハンダ(9ヶ所)を外して、電源
トランスとTRANSシートを分離します。
※ 電源トランスはTRANSシートの構成部品ではあり
ません。
5 AMP Circuit Board, INPUT Circuit Board
(Time required: About 5 minutes each)
5-1 Remove the rear panel assembly. (See procedure 2)
5-2 Remove the three (3) screws marked [B] and screw
marked [C].The power transformer can then be removed.
(Fig. 4)
5-3 Remove the five (5) screws marked [D] and screw
marked [E]. The transformer bracket can then be re-
moved. (Fig. 5)
5-4 AMP Circuit Board:
5-4-1 Remove the two (2) screws marked [F] and the four (4)
screws marked [G]. The AMP circuit board can then be
removed. (Fig. 6)
5 AMPシート、INPUTシート
(所要時間:各約5分)
5-1 リアパネルAssyを外します。(2項参照)
5-2 [B]のネジ3本と[C]のネジを外し、電源トランスを外
します。(図4)
5-3 [D]のネジ5本と[E]のネジを外し、トランス金具を外
します。(図5)
5-4 AMPシート:
5-4-1 [F]のネジ2本と[G]のネジ4本を外し、AMPシートを外
します。(図6)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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MSP7 STUDIO
9
[240A/B]: Bonding Tapping Screw-B 3x8 (WJ286400) +ボンディ
ングBタイト
[250]: Bind Head Tapping Screw-B 3x12 (WJ286600) +バイ
ンドBタイト
Fig. 7(図7)
[250]
[250] [240A]
[240A] [240B]
Volume Knob, Hexagonal Nut and Washer
(ボリュームノブ、6角ナット、ワッシャー)
Volume Knob
(ボリュームノブ)
Hexagonal Nut
(6角ナット)
Washer
(ワッシャー)
[250]
[240B]
Mold Case
(モールドケース)
Fig. 8(図8)
Shield Bracket
(シールドブラケット)
INPUT
Fig. 9(図9)
6. LED Circuit Board
(Time required: About 2 minutes each)
6-1 Remove the rear panel assembly. (See procedure 2)
6-2 Remove the two (2) screws marked [H]. The LED circuit
board can then be removed. (Fig. 10)
6. LEDシート(所要時間:約2分)
6-1 リアパネルAssyを外します。(2項参照)
6-2 [H]のネジ2本を外し、LEDシートを外します。(図10)
5-5 INPUTシート:
5-5-1 ボリュームノブ、6角ナット、ワッシャーを外します。
(図7)
5-5-2 [250]のネジ5本を外し、モールドケースを外します。
(図7、8)
5-5-3 [240A]のネジ4本を外し、シールドブラケットを外しま
す。(図7、9)
5-5-4 [240B]のネジ3本を外し、INPUTシートを外します。
(図7、9)
5-5 INPUT Circuit Board:
5-5-1 Remove the volume knob, hexagonal nut and washer.
(Fig. 7)
5-5-2 Remove the five (5) screws marked [250].
The mold case can then be removed. (Fig. 7)
5-5-3 Remove the four (4) screws marked [240A].
The shield bracket can then be removed. (Fig. 7)
5-5-4 Remove the three (3) screws marked [240B].
The INPUT circuit board can then be removed. (Fig. 7)
Fig. 10(図10)
[ A ]
LED
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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MSP7 STUDIO
10
8. POWERスイッチ(所要時間:約2分)
8-1 リアパネルAssyを外します。(2項参照)
8-2 INPUTシートを外します。(5-5項参照)
8-3 ツメを押さえながらPOWERスイッチを外します。
(図12)
8. Power Switch
(Time required: About 2 minutes)
8-1 Remove the rear panel assembly. (See procedure 2)
8-2 Remove the INPUT circuit board. (See procedure 5-5)
8-3 Press the claw to remove the power switch. (Fig. 12)
Fig. 11(図11)
Heat sink
(ヒートシンク)
[J]
[I]
[I]
[I]
Power Switch
(POWERスイッチ)
Claw
(ツメ)
Claw
(ツメ)
Fig. 12(図12)
7. Heat Sink (Time required: About 6 minutes)
7-1 Remove the rear panel assembly. (See procedure 2)
7-2 Remove the power transformer and the bracket trans.
(See procedure 5-2, 5-3)
7-3 Remove the AMP circuit board. (See procedure 5-4)
7-4 Remove the eight (8) screws marked [I] and screw marked
[J]. The heat sink can then be removed. (Fig. 11)
* Pull the heat sink lightly away from the rear panel to
remove it.
7. ヒートシンク(所要時間:約6分)
7-1 リアパネルAssyを外します。(2項参照)
7-2 電源トランスとトランス金具を外します。
(5-2、5-3項参照)
7-3 AMPシートを外します。(5-4項参照)
7-4 [I]のネジ8本と[J]のネジを外し、ヒートシンクを外し
ます。(図11)
※ 軽く力を加えれば、容易にヒートシンクを外すこと
ができます。
Reverse side of rear panel
(リアパネルの裏面)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
11
CONTENTS(目次)
•AMP Circuit Board ...................................................................................... 12
•INPUT Circuit Board ................................................................................... 14
•TRANS Circuit Board ................................................................................. 15
•LED Circuit Board ......................................................................................15
■CIRCUIT BOARDS(シート基板図)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
12
to INPUT CN102 to LED CN207
TWEETER
to TRANS CN202B
WOOFER
Component side(部品側)
•AMP Circuit Board
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
14
to AMP CN102B
to Power Transformer
to Power SW
INPUTHIGH TRIMLOW TRIM LOW CUT
+1.5dB
0
-1.5dB
100Hz
80Hz
FLAT
+1.5dB
-1.5dB
0dB
-3dB
MIN -6dBu
LEVEL
AC INLET
•INPUT Circuit Board
Component side(部品側)
Pattern side(パターン側)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
15
to AMP CN201
to AMP CN202
to INPUT CN104
POWER
•TRANS Circuit Board
•LED Circuit Board
Component side(部品側) Pattern side(パターン側)
Component side(部品側) Pattern side(パターン側)
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Q
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
16
Measuring Voltage [測定電圧] AC100 V, 50/60 Hz (J)
AC120 V, 60 Hz (U, C, T)
AC240 V, 50 Hz (A)
AC230 V, 50 Hz (B)
AC230 V, 50 Hz (H)
AC230 V, 60 Hz (K)
AC230 V, 50 Hz (O)
Load [負荷] LF 4 Ω
HF 6 Ω
LEVEL VR [レベル VR] MAX.
Tone-control SW [トーンコントロール SW] HIGH TRIM, LOW TRIM: 0 position, LOW CUT: FLAT
(NOTE): 0 dBu = 0.775 V
1. Electric performance(電気性能)
■INSPECTIONS(検査)
INPUT CONDITIONS
(入力条件)
Output Power
(定格出力)
GAIN
(利得)
Frequency Response
(周波数特性)
Tone-control
Characteristic
(トーンコントロール特性)
Noise Level
Residual Noise
(残留雑音)
MAX. Noise
DC Voltage
ITEM
(項目)
OUTPUT CONDITIONS
(出力条件)
20 Hz
60 Hz
400 Hz
2 KHz
4 KHz
20 KHz
LF: 80 W (27.3 dBu) OUTPUT
HF: 50 W (27.0 dBu) OUTPUT
DIN AUDIO Filter
LF SP-OUT
< 0.05 %
< 0.05 %
27.3 dBu ±2 dB
-21.0 ±3 dB
+6 ±2 dB
+2.5 ±2 dB
+3 ±2 dB
-12.5 ±3 dB
-23 ±3 dB
-2 ±2 dB
+4.5 ±2 dB
-3 ±1.5 dB
-1.5 ±1 dB
+1.5 ±1 dB
-1.5 ±1 dB
+1.5 ±1 dB
-3 ±2 dB
-3 ±2 dB
< -60 dBu
< -60 dBu
< -60 dBu
< -60 dBu
< ±50 mV
LIMIT
(限界値)
REF: LF OUTPUT
1 KHz 1 W
REF: LF OUTPUT
1 KHz 1 W
REF: LF OUTPUT
1 KHz 1 W
REF: LF OUTPUT
1 KHz 1 W
REF: LF OUTPUT
1 KHz 1 W
REF: LF OUTPUT
1 KHz 1 W
REF: LF OUTPUT
LOW TRIM: 0
REF: HF OUTPUT
HIGH TRIM: 0
REF: LF OUTPUT
LOW CUT: FLAT
LF SP-OUT
DIN AUDIO Filter
HF SP-OUT
DIN AUDIO Filter
LF SP-OUT
DIN AUDIO Filter
HF SP-OUT
DIN AUDIO Filter
HF SP-OUT
LF SP-OUT
INPUT 400 Hz
INPUT 5 KHz
INPUT -6 dBu 1 KHz
INPUT
HIGH TRIM: 0
LOW TRIM: 0
LOW = -3
REF: 60 Hz
LOW = -1.5
REF: 60 Hz
LOW = +1.5
REF: 60 Hz
HIGH = -1.5
REF: 15 KHz
HIGH = +1.5
REF: 15 KHz
LOW CUT= 80 Hz
REF: 80 Hz
LOW CUT = 100 Hz
REF: 100 Hz
LEVEL VR = MIN.
HIGH TRIM: 0
LOW TRIM: 0
LEVEL VR = MAX.
HIGH TRIM: 0
LOW TRIM: 0
No Signal
No.
1
2
3
4
5
6
7
LF SP-OUT
LF SP-OUT
LF SP-OUT
LF SP-OUT
HF SP-OUT
LF SP-OUT
HF SP-OUT
HF SP-OUT
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
17
パワースイッチをON/OFFにした時のリレーの動作時間
と、SP端子間に現れるポップノイズはLF、HF共に下表の
範囲であることを確認します。
2. Muting operation(Muting動作)
3-1 Q205のベースに2.2kΩを介してDC+3Vを印加した時リ
レーが即刻OFFになることを確認します。
3-2 Q210のベースに2.2kΩを介してDC-3Vを印加した時リ
レーが即刻OFFになることを確認します。
3. Protection circuit operation(保護回路動作)
4. Clipping level indication(クリップレベル表示)
100Hzを入力し、LF-SPOUTの出力レベルが31dBuとな
るようにしたとき、LEDが緑から赤色に変化することを
確認します。
POWER SWITCH
Non-signal
(無信号)
INPUT Relay operation time
(リレー動作時間)
2.0 ±1.5 sec
1.0 +1.5/-1.0 sec
≤0.1 Vp-p
≤0.1 Vp-p
Noise output voltage(ノイズ出力電圧)
LF, HF SP-OUT
OFF →ON
ON →OFF
Turn ON or OFF the power switch and check the relay
operation time and the pop noise obtained at SP terminal
is within the range specified in the following table.
3-1 Input DC +3 V to the base terminal of Q205 through the
2.2 kΩresistance and check the relay turns off at once.
3-2 Input DC -3 V to the base terminal of Q210 through the
2.2 kΩresistance and check the relay turns off at once.
Input the 100 Hz signal to the input terminal and check the
color of the power indicator is changed from green to red
when the output level obtained at LF-SP OUT is 31 dBu.
5. Stability(安定度)
5-1 Vary the power supply voltage ±10 % and check the oscil-
lation or the like does not occur.
5-2 Connect the following capacitors to the output terminal
and check the oscillation or the like does not occur.
5-1 電源電圧を±10%変化させたとき、発振等を生じないこと
を確認します。
5-2 スピーカー端子に下記容量負荷を接続し、発振等を生じ
ないことを確認します。
1
47 p
Capacity
容量
2
100 p
3
330 p
4
470 p
5
1000 p
6
3300 p
7
4700 p
8
0.01 µ
9
0.033 µ
0
0.047 µ
6. Factory Settings(出荷時の設定)
POWER : OFF
LOW TRIM : 0
HIGH TRIM : 0
LOW CUT : FLAT
LEVEL control : MIN.
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Q
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
2
BCDA
2
1
3
4
5
D202
D225
-15V +15V
RED
D221
GREEN
*S
*S
*S: soldered
Q203,204,
212,213
LED
DRIVE
IC201-1/2
178
4
3
5
6
IC201-2/2
HPF
STEP
FILTER
LOW CUT
JK101 -15V +15V
12 34Level
157 1
8POWER AMP
COMPARATOR
+45V
YE
BL
RE
BK
32 VR101 HIGH 19 11
9
7
6
IC101-1/2 IC101-2/2
FLAT
80Hz
100Hz
TWEETER
IC104-1/2IC102-2/2 IC103-1/2 IC104-2/2
IC105-1/2, 2/2
IC103-2/2
IC106-1/2, 2/2
S101 S102S103
18 IC203
HIGHLOW
RY101
-45V
LOW 15
WOOFER
16 IC203
POWER AMP
-15V -15V
+15V +15V
-45V +45V
-29V
T201
145˚C
F202
F201
4
35
6
7
8
D209
IC204
D210 Q205,207,
209,210
R255
+24V
R246
POWER TRANSFORMER
(電源トランス)
+15V
-15V
+15V
+15V
8
-15V
4
+15V
8
-15V
4
7
+15V
8
-15V
4
1
+15V
8
-15V
4
11
1
+15V
CN207 (3P)
CN201 (3P)
CN203 (4P)
CN102B (5P)
CN102 (5P)
CN202B (5P)
CN206 (2P)
CN105 (3P) CN106 (4P) CN104 (3P)
CN202 (5P)
+29V
R254
IC206
-15V
HPF
+15V
8
-15V
4
F101 C145
C111
POWER
AC CORD
AC INLET
++
–
LPF
+15V
8
-15V
4
TRIM
PROTECTION
F
A
A
B
B
+
–
+
–
+
–
+
–
+
–
LED 1/5
INPUT 3/5
TRANS 4/5
AMP 5/5
2/5
AMP
Adhesive
(接着)
to AMP
CN102B
to TRANS
CN206
■BLOCK DIAGRAM(ブロックダイアグラム)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
MSP7 STUDIO
19
MSP7 STUDIO
1
2
3
4
5
6
7
ABCDEFGH
Note : See parts list for details of circuit board component parts.
注 :シートの部品詳細はパーツリストを御参照ください。
:
Electrolytic Capacitor
(ケミカルコンデンサー)
(MY)
:
Mylar Capacitor
(
マイラーコンデンサー
)
Components having special characteristics are marked and must be
replaced with parts having specification equal to those originally installed.
印の部品は、安全を維持するために重要な部品です。交換する場合は、
安全のために必ず指定の部品をご使用ください。
WARNING (注意)
ZA1G0A00104
OP AMP
OP AMP
OP AMP
OP AMP
OP AMP
INPUT
to INPUT_CN102B
<P. 20/G-2>
to TRANS_CN206
<P. 20/A-6>
AC INLET
LOW TRIM
HIGH TRIM
82
82
■CIRCUIT DIAGRAM 1/2 (INPUT 1/2)
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

MSP7 STUDIO
20
MSP7 STUDIO
MSP7 STUDIO
Note : See parts list for details of circuit board component parts.
注 :シートの部品詳細はパーツリストを御参照ください。
:
Electrolytic Capacitor
(ケミカルコンデンサー)
(
MY
)
:MylarCapacitor
(
マイラーコンデンサー
)
(
FS
)
:FlameProofCarbonResistor
(
不
燃化
カーボン抵抗
)
1
2
3
4
5
6
7
ABCDEFGH
Components having special characteristics are marked and must be
replaced with parts having specification equal to those originally installed.
印の部品は、安全を維持するために重要な部品です。交換する場合は、
安全のために必ず指定の部品をご使用ください。
WARNING
(注意)
ZA1G0A00204
AMP
AMP
TRANS
LED
REGULATOR -15V
OP AMP
OP AMP
REGULATOR
+15V
POWER AMP
WOOFER
4 Ω
TWEETER
6 Ω
to CN104
<P. 19/F-6>
to INPUT_CN102
<P. 19/A-4>
4
3
F
145˚C
5
6
7
8
■CIRCUIT DIAGRAM 2/2 (INPUT 2/2)
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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