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IMPOR TANT 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 under- stood by the users, and have therefore not been restated.
ACU16-C (総合仕様) SPECIFICATIONS D/A converters 24-bit, 128-times oversampling Dynamic range 110 dB typical Frequency response 20 Hz–20 kHz +0.5, –1.5 dB (nominal output level @ 1 kHz) Crosstalk –80 dB (@ 1 kHz, between adjacent channels) Signal delay 0.625 ms (CobraNet to analog output) +4 dB output Less than 0.05%...
ACU16-C (パネルレイアウト) PANEL LAYOUT Front Panel (フロントパネル) USB ポート USB port UNIT ID switch UNIT ID スイッチ NETWORK STATUS indicators NETWORK STATUS インジケーター POWER ON/OFF switch POWER ON/OFF スイッチ (リアパネル) Rear Panel Grounding screw アース用ネジ AC IN connector AC IN ソケット...
ACU16-C (分解手順) DISASSEMBLY PROCEDURE トップカバー(所要時間:1 分) Top Cover (Time required: 1 minute) Remove the eleven (11) screws marked [480]. The 1-1. ネジ[480]11 本を外し、トップカバーを外します。 top cover can then be removed. (Fig. 1) (Fig.1) CM-1 Ass'y(所要時間:2 分) CM-1 Assembly (Time required: 2 minutes) Remove the top cover.
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ACU16-C DAC1 シート(所要時間:6 分) DAC1 Circuit Board (Time required: 6 minutes) Remove the top cover. (See Procedure 1.) 5-1. トップカバーを外します。 (1 項参照) Remove the DAC2 circuit board. (See Procedure 4.) 5-2. DAC2 シートを外します。 (4 項参照) Remove the four (4) screws marked [400a] fixing 5-3.
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ACU16-C DAC-LED シート(所要時間:2 分) DAC-LED Circuit Board (Time required: 2 minutes) Remove the top cover. (See Procedure 1.) 9-1. トップカバーを外します。 (1 項参照) Remove the two (2) screws marked [480] from the 9-2. フロントパネルのネジ[480]2本を外し、 フロントパ front panel and then remove the front panel ネル...
ACU16-C (LSI 端子機能表) LSI PIN DESCRIPTION HD6477042AF28 (X3250A00A00) CPU MAIN: IC201 NAME FUNCTION NAME FUNCTION DACK0 (Port E) PE15 Port E Data bus Ground Ground Data bus Power supply Address bus Data bus Ground XTAL Crystal oscillator Mode control EXTAL...
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ACU16-C YSS904-F (XV989A00) DSP5 (Digital Signal Processor) MAIN: IC601 NAME FUNCTION NAME FUNCTION Not used Not used Ground SIO28 Power supply SIO29 Serial data bus System master clock input (60 MHz or 30 MHz) SIO30 System master clock output (High or 30 MHz)
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ACU16-C AK4393-VF-E2 (XW029A00) DAC DAC: IC203, 204, 303, 304, 403, 404, 503, 504 NAME FUNCTION NAME FUNCTION DVSS Digital Ground Pin BVSS Substrate Ground Pin, 0V DVDD Digital Power Supply Pin, 3.3V or 5.0V VREFL Low Level Voltage Reference Input Pin...
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ACU16-C MBCG46183-129PFV-G (XV833A00) CPU MAIN: IC301 PI N PI N NAME FUNCTION NAME FUNCTION I/ O I/ O Data bus RX32 I/ O TX32 Serial data /I RQ0 I /O Inter r upt request RX33 /I RQ1 I /O Inter r upt request...
ACU16-C (IC ブロック図) IC BLOCK DIAGRAM TC74LVX4245FS (XU229A00) MAIN: IC403 TRANSCEIVER Logic Level Converter Same as above block INPUTS FUNCTION OUTPUTS A-BUS B-BUS OUTPUT INPUT INPUT OUTPUT X : Don't Care High lmpedance Z : High lmpedance (TOP VIEW) TC74VHC244FT (XW234A00)
ACU16-C (シート基板図) CIRCUIT BOARDS MAIN Circuit Board CN301: to DAC-JACK-CN601 CN604: to DAC2-CN401 CN603: to DAC1-CN201 IN: 3NA-V848170...
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ACU16-C CN403: to CM-1 CN402: to CM-1 N601 CN306: to DAC2-CN501 CN307: to DAC1-CN301 to POWER Supply CN203: to DAC-LED-CN801 Component side (部品側)...
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ACU16-C DAC-DAC1 Circuit Board CN201: CN301: to MAIN-CN603 to MAIN-CN307 CH16/15 CH14/13 CH12/11 CH10/9 Component side (部品側) IN: 3NA-V848170...
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ACU16-C DAC-DAC1 Circuit Board Pattern side (パターン側)...
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ACU16-C DAC-DAC2 Circuit Board CN401: CN501: to MAIN-CN604 to MAIN-CN306 CH8/7 CH6/5 CH4/3 CH2/1 (部品側) Component side...
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ACU16-C DAC-DAC2 Circuit Board Pattern side (パターン側)...
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ACU16-C DAC-JACK Circuit Board to CM-1 CN601: to MAIN-301 RS-485 SECONDARY PRIMARY to COMPUTER CobraNet (部品側) Component side Pattern side (パターン側) DAC-LED Circuit Board CN801: LINK CONDUCT to MAIN-CN203 ERROR ERROR Component side (部品側) Pattern side (パターン側) DAC-PSW Circuit Board...
ACU16-C INSPECTIONS 1. Preparation 1.1 Conditions Unless otherwise specified, use the following conditions. UNIT ID switch setting : “0” 0dBu = 0.775 Vrms 0dBFS = 0 decibel full scale Use DME32 as the audio signal source. Insert “MYT8-AE” into the slot 1 and slot 2 of DME32.
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ACU16-C 2.2 Inspection of analog output (CH1 to CH16) 2.2.1 Gain Input frequency Input level Specified output level Tolerance +4dBu ± 1dBu 1KHz -14dBFS +4dBu The range of the level difference between channels is specified as follows. Tolerance Within 1dB 2.2.2 Frequency response...
Stop: 1 bit Flow control: none To start up the TEST program, turn on the power to ACU16-C and press the “F1” key of the keyboard. Then the PC screen appears as shown below. <<<<< ACU16-C/NHB32-C Test Mode >>>> FIRMWARE VERSION: V1.00 1.
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ACU16-C 2. List of test items 1 FLA: READ/WRITE test of FLASH ROM Automatic judgment 2 RAM: READ/WRITE test of DRAM Automatic judgment 3 EEP: READ/WRITE test of EEPROM Automatic judgment 4 DSP: READ/WRITE test of DSP5 register Automatic judgment...
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Using the 25P D-sub cross cable (for MY8-AE), connect SLOT2 of DME32 and [AES/EBU2] of NHB32-C. 3.2 Testing method Select “5. ACU16-C FINAL ASS’Y” on the start-up screen of the TEST program, and testing of the test items is automatically executed in the order of the following test items.
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Using the serial cable (cross), connect CN602 of the DAC-JACK circuit board and the serial terminal of PC. 4.2 Testing Select “6. ACU16-C MAIN SHEET” on the start-up screen of the TEST program, and testing of test items is automatically executed in the order of the following test items.
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Using the serial cable (cross), connect CN602 of the DAC-JACK circuit board and the serial terminal of PC. 5.2 Testing method Select “7. ACU16-C DAC SHEET” on the start-up screen of the TEST program, and testing of following test items is executed when the “ENTER” key of the keyboard is pressed.
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Download the ACU16-C updated program from the download page on the YSISS home page. (YSISS URL >>http://plaza.yamaha.co.jp/ysiss/exindex.nsf) 6.1 Connection Using the USB cable, connect ACU16-C and PC and then turn on the power to ACU16-C. 6.2 PC setting Remove the THR ON/OFF check box from the USB-MIDI driver.
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*マスター CLOCK は、 ”AES / EBU 1 1/2”に設定します。 ・DME32 * SLOT1、SLOT2 に”MY8-AE”を挿入します。 * SLOT1、SLOT2 の全 CH に,1KHz、-14dBFS を出力します。 *マスター CLOCK は、 ”Internal”に設定します。 1.3 起動方法 マスターデータとして発行される ACU16-C / NHB32-C 専用の通信ソフト”Tera Term Pro for ACU / NHB”を起動します。 通信フォーマットを以下のように設定します。 Baudrate: 38400bps Data: 8bits Parity:...
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−−> プログラムデータファイル(***:バージョン) ※最新バージョンは、ヤマハ CS センターホームページのダウンロードページからダウンロードして下さい。 (YSISS URL >>http://plaza.yamaha.co.jp/ysiss/index.nsf) 6.1 接続 ACU16-C と PC を USB ケーブルで接続してから、ACU16-C の電源を入れます。 6.2 PC の設定 USB-MIDI ドライバの THR ON / OFF のチェック BOX を外します。 6.3 手順 インストーラープログラム”wain. exe”を起動すると、以下のような画面になります。 HiSpeed Serial Installer Version 0.52 - m2001...
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ACU16-C OVERALL CIRCUIT DIAGRAM 1/10 (MAIN) ACU16-C MAIN D-FF EEPROM to C3: E3 to C5: O6 D-FF to C2: P4 to C4: C4, to C5: E11 to C1: H11 to C2: K4 to C2: G8 to C2: K3 to C4: J8...
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ACU16-C OVERALL CIRCUIT DIAGRAM 2/10 (MAIN) ACU16-C MAIN to C2: D2 from C2: K2 from C1: G9 from C1: G8 from C1: F4 from C1: J11 from C1: I4 to C1: J8 to C1: J9 from C1: F3 INVERTER to C1: J9...
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ACU16-C OVERALL CIRCUIT DIAGRAM 3/10 (MAIN) ACU16-C BUS BUFFER from C1: J8 from C1: E10 from C1: E11 not used INVERTER from C5: F8 from C1: F3 from C5: F8 from C5: F8 TRANSCEIVER from C5: F8 from C4: C3...
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ACU16-C OVERALL CIRCUIT DIAGRAM 4/10 (MAIN) ACU16-C from C3: J11 to C2: N8, to C3: C7, to C3: F4, to C3: K10 from C1: F4 to C5: E11 to C3: B8 to C3: B9, to C3: F5, to C3: P9, to C5: E11...
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ACU16-C OVERALL CIRCUIT DIAGRAM 5/10 (MAIN) ACU16-C BUFFER from C4: C6 from C4: C6 from C4: C7 from C1: M2 from C1: K2 BUFFER from C1: F3 to C3: P8 DSP5 to C3: P8 to C3: P8 to C3: P8...
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ACU16-C OVERALL CIRCUIT DIAGRAM 6/10 (DAC) ACU16-C DAC2 OP AMP OP AMP OP AMP OP AMP BUFFER BUFFER to C7: M4 to C7: M4 OP AMP to C7: M2 OP AMP to C7: M3 to C7: M3 to C7: M3...
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ACU16-C OVERALL CIRCUIT DIAGRAM 7/10 (DAC) ACU16-C DAC2 from C6: O8 OP AMP OP AMP from C6: O8 from C6: O8 from C6: O8 from C6: O9 from C6: O8 from C6: O8 OP AMP OP AMP from C6: O9...
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ACU16-C OVERALL CIRCUIT DIAGRAM 8/10 (DAC) ACU16-C DAC1 OP AMP OP AMP OP AMP OP AMP OP AMP BUFFER OP AMP BUFFER to C9: M4 to C9: M4 OP AMP to C9: M2 OP AMP to C9: M3 to C9: M3...
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ACU16-C OVERALL CIRCUIT DIAGRAM 9/10 (DAC) ACU16-C DAC1 from C8: O8 OP AMP OP AMP from C8: O8 from C8: O8 from C8: O8 from C8: O8 from C8: O8 from C8: O8 OP AMP OP AMP from C8: O9...
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ACU16-C OVERALL CIRCUIT DIAGRAM 10/10 (DAC-JACK, DAC-PSW, DAC-LED) ACU16-C DAC-PSW DAC-JACK TO AC-INLET, POWER UNIT-CN1 DAC-LED : not installed (未実装) 未実装 Capacitor ACU16-C ACU16-C...
AMP CONTROL UNIT PARTS LIST (目次) CONTENTS (総組立) OVERALL ASSEMBLY ..........2 (電気部品) ELECTRICAL PARTS ..........4 Notes : DESTINATION ABBREVIATIONS A : Australian model M : South African model B : British model O : Chinese model C : Canadian model Q : South-east Asia model D : German model T : Taiwan model...
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ACU16-C (総組立) OVERALL ASSEMBLY WA728100 30mm Japanese model only...
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ACU16-C PART NO. DESCRIPTION 部 品 名 REMARKS REF NO. RANK チ ッ プ 金 被 抵 抗 R291 V I 1 9 7 9 0 0 Metal Film Resistor(chip) 16.0K 1/10 D -298 V I 1 9 7 9 0 0 Metal Film Resistor(chip) 16.0K 1/10 D...
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