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.
MW12CX/MW12C PANEL LAYOUT (パネルレイアウト) • Channel Control Section (チャンネルコントロール部) MIC Input Jacks (CHs 1 to 4, 5/6, 7/8) Channels Channels Channels 1 to 4 5/6 and 7/8 9/10 and 11/12 LINE Input Jacks (CHs 1 to 4) (Monaural) (Stereo) (Stereo)
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MW12CX/MW12C • Master Control Section (マスターコントロール部) 2TR IN Jacks REC OUT 1 (L, R) Jacks REC OUT 2 (L, R) Jacks RETURN L (MONO), R Jacks SEND Jacks • AUX (AUX1) • EFFECT (AUX2) STEREO OUT (L, R) Jacks • XLR jacks •...
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MW12CX/MW12C • Digital Effects Section (デジタルエフェクト部) * Only the MW12CX has digital effects. (この機能はMW12CX のみに内蔵されています。 ) FOOT SWITCH Jack PROGRAM Dial PARAMETER Control AUX Control ON Switch PFL Switch EFFECT RTN Fader FOOT SWITCH端子 PROGRAM選択ダイアル PARAMETERコントロール AUXコントロール ONスイッチ PFLスイッチ EFFECT RTNフェーダー...
MW12CX/MW12C MW12CX MW12CX OVERALL ASSEMBLY WIRING (MW12CX 総組立配線図) The Wiring of the PS12X Circuit Board (PS12Xシートの配線) Connect the wires according to the following table and figure after installing the PS12X circuit board to the bottom case assembly. (ボトムケースAss’ yにPS12Xシートを取り付け後、下記の表/図に従い配線します。) Wiring point...
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MW12CX/MW12C MW12CX The Wiring of the JK12UX Circuit Board and MIX12UX Circuit Board (JK12UXシートとMIX12UXシートの配線) Install the JK12UX circuit board to the bottom case assembly. (JK12UXシートをボトムケースAss’ yに取り付けます。) Note) Pass the connector assembly USBMW12C through the incision part of the JK12UX circuit board as shown in the picture below.
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MW12CX/MW12C MW12CX Install the MIX12UX circuit board to the bottom case assembly. (MIX12UXシートをボトムケースAss’ yに取り付けます。) Note) Put out the two connector assemblies PS124C and PS124CX through CN6 and CN8 as shown in the picture below. (下の写真のようにPS12Xに接続した線材をJK12UXシートとMIX12UXシートの間、CN6、CN8の間から出し ておきます。) Note) Take care not to pinch the two connector assemblies between the shield DSP2 and the JK12UX circuit board.
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MW12CX/MW12C MW12CX Connect each CN1-CN8 on the JK12UX circuit board and MIX12UX circuit board using jumper wire. (JK12UXシートとMIX12UXシート上のそれぞれのCN1-CN8をジャンパーワイヤーで接続します。) JK12UX WJ540200 MIX12UX WJ540300 Bend the jumper-wires of CN1, CN2. (CN1、CN2のジャンパー線を折り曲げます。) a. Bend the Jumper-wires in the direction toward the MIX12UX circuit board.
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MW12CX/MW12C MW12CX Bend the jumper-wires of CN3-CN8. (CN3-CN8のジャンパー線を折り曲げます。) a. Bend the Jumper-wires in the shape of “M” letter. (ジャンパー線を “M” 字形状に折り曲げます。) b. Process the Jumper-wires so that their height from the MIX12UX circuit board’s component side become 15 mm or less.
MW12CX/MW12C MW12C MW12C OVERALL ASSEMBLY WIRING (MW12C 総組立配線図) The Wiring of the PS12 Circuit Board (PS12シートの配線) Connect the wires according to the following table and figure after installing the PS12 circuit board to the bottom case assembly. (ボトムケースAss’ yにPS12シートを取り付け後、下記の表/図に従い配線します。) Wiring point...
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MW12CX/MW12C MW12C The Wiring of the JK12U Circuit Board and MIX12U Circuit Board (JK12UシートとMIX12Uシートの配線) Install the JK12U circuit board to the bottom case assembly. (JK12UシートをボトムケースAss’ yに取り付けます。) Note) Pass the connector assembly USBMW12C through the incision part of the JK12U circuit board as shown in the picture below.
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MW12CX/MW12C MW12C Install the MIX12U circuit board to the bottom case assembly. (MIX12UシートをボトムケースAss’ yに取り付けます。) Note) Put out the connector assembly PS124C through CN6 and CN8 as shown in the picture below. (下の写真のようにPS12に接続した線材をJK12UシートとMIX12Uシートの間、CN6、CN8の間から出してお きます。) Connect the wires according to the table below.
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MW12CX/MW12C MW12C Connect each CN1-CN8 on the JK12U circuit board and MIX12U circuit board using jumper wire. (JK12UシートとMIX12Uシート上のそれぞれのCN1-CN8をジャンパーワイヤーで接続します。) JK12U WH109500 MIX12U WH109600 Bend the jumper-wires of CN1, CN2. (CN1、CN2のジャンパー線を折り曲げます。) a. Bend the Jumper-wires in the direction toward the MIX12U circuit board.
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MW12CX/MW12C MW12C Bend the jumper-wires of CN3-CN8. (CN3-CN8のジャンパー線を折り曲げます。) a. Bend the Jumper-wires in the shape of “M” letter. (ジャンパー線を “M” 字形状に折り曲げます。) b. Process the Jumper-wires so that their height from the MIX12U circuit board’s component side become 15 mm or less.
MW12CX/MW12C LSI PIN DESCRIPTION (LSI端子機能表) • AK5381VT-E2 (X5219A00) ADC (Analog to Digital Converter) DSP2: ICM04 NAME FUNCTION NAME FUNCTION AINR Rch analog input pin SDTO Audio serial data output pin AINL Lch analog input pin LRCK Output channnel clock pin...
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MW12CX/MW12C • YMW767-VTZ (X6055A00) CPU (SWLO1B) DSP2: ICM07 NAME FUNCTION NAME FUNCTION Ground Ground TESTN Input for test Power supply +3.3 V PLLBPN PLL bypass select LBN/LWRN/PF6 External memory lower-byte enable / Port F PLLV PLL power supply +2.5 V...
• USB Circuit Board (X7196C0) ........... 35 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ご参照ください。 • DSP2 Circuit Board (MW12CX only) to MIX12 CN10 Component side (部品側) Pattern side (パターン側) 2NA-WH10870 • USB Circuit Board...
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MW12CX/MW12C MW12CX MW12C • JK12UX/JK12U Circuit Board to M to MIX12 CN1 to MIX12 CN2 to MIX12 CN3 Component side (部品側) 2NA-WH10890...
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MW12CX/MW12C MW12CX MW12C to MIX12 CN4 to MIX12 CN5 to MIX12 CN6 to PS CN02 to MIX12 CN7 to MIX12 CN8 to USB CN101 Component side (部品側) 2NA-WH10890...
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MW12CX/MW12C MW12CX MW12C Pattern side (パターン側) 2NA-WH10890...
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MW12CX/MW12C MW12CX MW12C • MIX12UX/MIX12U Circuit Board to JK1 to JK12 CN1 to JK12 CN2 to JK12 CN3 Reduction: 4/5 Component side (部品側) 2NA-WH10900...
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MW12CX/MW12C MW12CX MW12C to JK12 CN7 to JK12 CN4 to JK12 CN5 to JK12 CN6 to DSP2 CNM02 to PS12 CN03 to JK12 CN8 9/10 11/12 EFFECT Reduction: 4/5 Component side (部品側) 2NA-WH10900...
80 switch COMP control Minimum EQ (HIGH, MID, LOW) GAIN control CENTER AUX1, AUX2 level control (MW12C) Maximum AUX, EFFECT level control (MW12CX) Maximum AUX1 PRE switch (MW12C) OFF (POST) AUX PRE switch (MW12CX) OFF (POST) PAN control L (turned counterclockwise fully)
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REC OUT/GROUP1-2 TO ST ASSIGN switch STEREO Master fader (STEREO) Maximum AUX1, AUX2 SEND Master level control (MW12C) Maximum AUX, EFFECT SEND Master level control (MW12CX) Maximum RETURN TO AUX1, ST level control (MW12C) Maximum RETURN TO AUX, ST level control (MW12CX)
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MW12CX/MW12C Frequency Characteristic In the signal route 1 to 0 specified in the table 2-6-1 to 2-6-6, check the 20 Hz and 20 kHz frequency response of each output is within the range of +1/-2.5 dB compared with the 1 kHz (0 dB).
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Check the distortion is 1 % or less when the output level obtained at REC OUT2, AUX1, 2 SEND (MW12C), AUX, EFFECT, SEND (MW12CX) and MONITOR OUT is +20 dBu. Check the distortion is 1 % or less when the output level obtained at PHONES (L, R) is +7.5 dBu.
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MW12CX/MW12C 2-17 COMP 2-17-1 GAIN With controls set as specified in the section 2-2, set the COMP control of channels 1-4 to maximum. Then check the output level obtained at INSERT OUT 1-4 is within the range specified in the table 2-17-1.
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MW12CX/MW12C 2-18 DIGITAL EFFECT (MW12CX) Set the CH1 as follows and input -60 dBu signal to CH1 MIC. Set EFFECT RTN fader and EFFECT RTN AUX VR to maximum and check the output level is the value specified in the Table 2-18.
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MW12CX/MW12C Others Execute each test with controls set effective. Effect (MW12CX only) Check the effect program [1], [6], [11] and [16] are effective respectively. Check the output signal can be controlled with the parameter volume in each effect program. Check the allophone can not be heard when the program is changed.
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80 スイッチ COMPコントロール 最小 EQ (HIGH、MID、LOW) GAINコントロール CENTER AUX1、AUX2レベルコントロール (MW12C) 最大 AUX、EFFECTレベルコントロール (MW12CX) 最大 AUX1 PREスイッチ (MW12C) OFF ( POST) AUX PREスイッチ (MW12CX) OFF ( POST) PANコントロール L ( 反時計方向一杯に回します。) ONスイッチ 測定時ON (LEDが点灯します。) 、他はOFF PFLスイッチ 測定時ON、他はOFF RECスイッチ 測定時ON、他はOFF STスイッチ 測定時ON、他はOFF チャンネルフェーダー...
MW12CX/MW12C PARTS LIST I CONTENTS (目次) MW12CX OVERALL ASSEMBLY (MW12CX 総組立)......2 MW12C OVERALL ASSEMBLY (MW12C 総組立)....... 4 ELECTRICAL PARTS (電気部品) ............6 Notes: DESTINATION ABBREVIATIONS Australian model South African model British model Chinese model Canadian model South-east Asia model...
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MW12CX/MW12C MW12CX MW12CX OVERALL ASSEMBLY (MW12CX 総組立) Accessories of Phone Jack Accessories of Phone Jack (ホーンジャック付属品) (ホーンジャック付属品) Screw tighten (1st) (ネジ締め (1番) ) Screw tighten (latest) (ネジ締め (最後) ) Screw tighten (2nd) (ネジ締め (2番) ) Priority tighten in 30 (30の内で最初にネジ締め)...
ST CH Level [Nominal:-6dB] [Nominal:-10dB] [Nominal:-10dB] -20 d Bu -20 d Bu [-10dBu] [Nominal:-10dB] ST CH AUX, EFFECT(MW12CX) [Nominal:-6dB] MONITOR [Nominal:-6dB] [Nominal:-6dB] PHONES [Nominal:-16dB] -30 d Bu -30 d Bu CH IN LINE Gain:Max [-34dBu] ST CH IN LINE Gain:Max [-34dBu]...
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MW12CX/MW12C CIRCUIT DIAGRAM 1/12 (DSP2) MW12CX only SYSTEM RESET JTAG Mounted Not mounted JTAG Not mounted Mounted OP AMP OP AMP to MX12U_CN10 REGULATOR +3.3V <P. 13: F3> Components marked XX are not installed. XX :未実装 (セ) : Ceramic Capacitor (セラミックコンデンサー)...
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MW12CX/MW12C CIRCUIT DIAGRAM 2/12 (JK12UX/JK12U 1/4) MW12CX MW12C <2/4: K1, 4/4: K4> OP AMP OP AMP to MIX12_CN1 <P. 9: P3> OP AMP OP AMP OP AMP OP AMP to MIX12_CN2 <P. 9: P8> OP AMP OP AMP (セ) :...
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MW12CX/MW12C CIRCUIT DIAGRAM 3/12 (JK12UX/JK12U 2/4) MW12CX MW12C <1/4: O1, 4/4: K4> OP AMP OP AMP OP AMP to MIX12_CN3 <P. 10: P4> OP AMP (セ) : Ceramic Capacitor (セラミックコンデンサー) : Electrolytic Capacitor (ケミカルコンデンサー) (LL) : Electrolytic Capacitor (ケミカルコンデンサー) (マ)...
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MW12CX/MW12C CIRCUIT DIAGRAM 4/12 (JK12UX/JK12U 3/4) MW12CX MW12C OP AMP OP AMP OP AMP to MIX12_CN4 <P. 11: O3> <4/4: K2> <4/4: K2> OP AMP JK12UX only installed <4/4: K7> <4/4: K8> installed OP AMP to MIX12_CN5 <P. 12: H5>...
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MW12CX/MW12C CIRCUIT DIAGRAM 5/12 (JK12UX/JK12U 4/4) MW12CX MW12C <3/4: B5> <3/4: B5> OP AMP <3/4: E2> OP AMP OP AMP OP AMP <3/4: E2> to USB_CN101 <P. 15: E6> <1/4: O1, 2/4: K1> OP AMP to MIX12_CN6 <P. 12: H4>...
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MW12CX/MW12C CIRCUIT DIAGRAM 12/12 (USB) MW12CX MW12C REGULATOR CODEC OP AMP OP AMP Components marked XX are not installed. OP AMP XX :未実装 (セ) : Ceramic Capacitor (セラミックコンデンサー) : Electrolytic Capacitor (ケミカルコンデンサー) (D) : Metal Film Resistor (金属被膜抵抗) Note : See parts list for details of circuit board component parts.
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