PARTS LIST
IC & DIODE FIGURES (外形図)
BLOCK & LEVEL DIAGRAM (ブロック&レベルダイアグラム)
CIRCUIT DIAGRAM (回路図)
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved. 07.08
MG206C-USB/MG206C
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 specification 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
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).
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:
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.
GREEN-AND-YELLOW:EARTH
BLUE:NEUTRAL
BROWN:LIVE
■ WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those originally
installed.
LINE INPUT (monaural channels)
GROUP OUT, STEREO OUT,
MONITOR OUT, AUX SEND
INSERT
PHONES
RETURN
LINE INPUT (stereo channels)
• 端子接続の極性
入出力端子名端子の極性端子の形状
Pin 1: Ground
Pin 2: Hot (+)
Pin 3: Cold (–)
Tip: Hot (+)
Ring: Cold (–)
Sleeve: Ground
Tip: Output
Ring: Input
Sleeve: Ground
Tip: L
Ring: R
Sleeve: Ground
Tip: Hot
Sleeve: Ground
OUTPUTINPUT
XLR Jack
Ring
TipSleeve
TRS Phone Jack
TipSleeve
Phone Jack
MIC INPUT、STEREO OUT
LINE INPUT(モノラルチャンネル)
GROUP OUT、STEREO OUT、
MONITOR OUT、AUX SEND
INSERT
PHONES
RETURN
LINE INPUT(ステレオチャンネル)
ピン1:グラウンド
ピン2:ホット(+)
ピン3:コールド(–)
チップ:ホット(+)
リング:コールド(–)
スリーブ:グラウンド
チップ:Output
リング:Input
スリーブ:グラウンド
チップ:L
リング:R
スリーブ:グラウンド
チップ:ホット
スリーブ:グラウンド
OUTPUTINPUT
リング
リング
チップスリーブ
チップスリーブ
チップスリーブ
XLR端子
TRSフォーン端子
フォーン端子
10
■ CIRCUIT BOARD LAYOUT (ユニットレイアウト)
Rear
(リア)
MG206C-USB/MG206C
JACK20R
JACK20F
USB
(MG206C-USB only)
MIX20
Front
(フロント)
PS20
11
MG206C-USB/MG206C
■ WIRING DIAGRAM (基板結線図)
(MG206C-USB only)
JACK20R
CN003
(10P)
JACK20F
W101
(9P)
CN101
(9P)
CN903
(9P)
W201
(9P)
CN201
(9P)
CN002
(2P)
W301
(9P)
CN301
(9P)
CN004
(15P)
4
W401
(9P)
CN401
(9P)
CN101
(9P)
W501
(9P)
CN501
(9P)
W601
(9P)
CN601
(9P)
PS20USB
CN103
CN102
(2P)
(3P)
3
5
W701
(9P)
CN701
(9P)
W801
(9P)
CN801
(9P)
W001
(6P)
CN001
(6P)
2
W002
(9P)
CN002
(9P)
CN101
(7P)
CN001
(3P)
CN053
(7P)
1
6
MIX20
No. Part No.
1
(WJ98020)
2
(WJ98040)
3
(WJ98050)
4
(WJ78450)
5
(WJ78460)
6
(WJ78470)
12
Assembly Name
線材名
Connector Assembly PS7P
Connector Assembly PS3P
Connector Assembly PS2P
Connector Assembly USB20
Connector Assembly REAR10P
Connector Assembly REAR15P
PS7P束線
PS3P束線
PS2P束線
USB20束線
REAR10P束線
REAR15P束線
Connection
接続
MIX20-CN053 <-> PS20-CN101
JACK20F-CN001 <-> PS20-CN102
JACK20R-CN002 <-> PS20-CN103
JACK20R-CN903 <-> USB-CN101
MIX20-CN003 <-> JACK20R-CN003
MIX20-CN004 <-> JACK20R-CN004
Remarks
備考
7P-110
3P-140
2P-380
9P-140
10P-700
15P-720
CN004
(15P)
Location
100
130
140
CN003
(10P)
40
50
60
MG206C-USB only
MG206C-USB/MG206C
■ OVERALL ASSEMBLY WIRING (総組立配線図)
The inside room of this product is very little because a lot of units are installed fully.
To prevent the panel’s coming up and other things when assembling, perform the cable connection according to the followings.
(このモデルは、ユニットの集積度が高く、内部スペースに余裕がありません。
組み立て時のパネル浮き等を防止する為に、束線処理は下記のように行なってください。)
Note: The components marked “ * ” are used only for MG206C-USB.
(注:*マークの部品はMG206C-USBのみに使用されています。)
1.The wiring of the Inner Chassis Assembly. (インナーシャーシAssyの配線)
1-1. Before installing the JACK20R [Ref. 120] circuit board in the inner chassis Assembly [Ref. 20], connect the following connector
assemblies to the JACK20R [Ref. 120] circuit board and bind the connector assemblies with the cord binder [Ref. 180].
2-2Disconnect the fourteen (14) connectors. (Fig. 2)
2-3Remove the fourteen (14) screws marked [350]. (Fig. 2)
2-4Release the eight (8) hooks and remove the MIX20 cir-
cuit board. (Fig. 2)
2-5Remove the three (3) screws marked [300] and remove
the JACK20F circuit board. (Fig. 2)
*The buttons, knobs, knob black (WD942200), but-
ton on assembly (WH455200) are not components
of the MIX20 circuit board. When replacing the MIX20
circuit board, remove these components from the
old circuit board and install them on the new circuit
board.