Yamaha-DA-824-Service-Manual电路原理图.pdf

SERVICE MANUAL PA 011524 HAMAMATSU, JAPAN 1.44K-4111 K Printed in Japan 00.05 CONTENTS SPECIFICATIONS 3 PANEL LAYOUT 4 CIRCUIT BOARD LAYOUT 5 DIMENTIONS 6 BLOCK DIAGRAM 7 DISASSEMBLY PROCEDURE 8 LSI PIN DESCRIPTION 11 IC BLOCK DIAGRAM 13 CIRCUIT BOARDS 15 INSPECTIONS 27 TEST PROGRAM 29 FRASH ROM UPGRADE 32 PARTS LIST OVERALL CIRCUIT DIAGRAM DA CONVERTER 200005*-110000 This document is printed on chlorine free (ECF) paper with soy ink. RadioFans.CN 收音机爱 好者资料库 DA824 2 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 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, destruction 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 belived 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 distributors 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 Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. IMPORTANT NOTICE FOR THE UNITED KINGDOM Connecting the Plug and Cord IMPORTANT.The wires in this main lead are coloured in accordance with the following code: BLUE:NEUTRAL BROWN: LIVE As the colours of the wires in the main lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The BLUE wire must be connected to the terminal that is marked with the letter N (or coloured BLACK). The BROWN wire must be connected to the terminal that is marked with the letter L (or coloured RED). Be certain that neither core is connected to the earth terminal of the three pin plug. RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS DA824 3 MY8-AE, MY8-TD Sampling rate MY8-AT DA conversion resolution Frequency response Dynamic Range *1 Gain Error THD *2 Hum equivalent to a 20 kHz filter with infinite dB/octave attenuation. *2. 6 dB/octave filter 80 kHz. *Where dB represents a specific voltage, 0 dB is referenced to 0.775 V rms, 0 dBV is referenced to 1.00 V rms. *1. 24-bit 128-times oversampling D/A converters. *2. XLR-type connectors are electronically balanced (pin 1= ground, pin 2= hot, pin 3= cold). *3. TRS phone jacks are electronically balanced (tip= hot, ring= cold, sleeve= ground). *Where dB represents a specific voltage, 0 dB is referenced to 0.775 V rms, 0 dBV is referenced to 1.00 V rms. Analog Output ConnectionGAIN SW Actual Source Impedance For Use with Nominal Connector Output Level Nominal Max. before clip OUTPUT 18 *1150 lines600 lines +24 dB +18 dB +15 dB +4 dBV +10 dB (2.45 V) +4 dB (1.23 V) +1 dB (0.87 V) 10 dBV (0.316 V) +24 dB (12.28 V) +18 dB (6.16 V) +15 dB (4.36 V) +4 dBV (1.58 V) XLR-3-32 type (balanced)*2 & TRS phone jack (balanced)*3 Digital I/O Connection COM WORD CLOCK IN WORD CLOCK THRU SLOT Format mini YGDAI Level/Impedance RS232C TTL, 75 (ON/OFF) TTL, 75 Connector 9-pin D-sub (male) BNC BNC ONOFF POWER DA CONVERTER LOCKPEAK SIGNAL NOMINAL PEAK SIGNAL NOMINAL 12345678 1234 SLOT COM THRU75IN ONOFF WORD CLOCK DA CONVERTER MODEL DA824 8234567 82345671 OUTPUT (BAL) 1 56789 1011 1 PEAK, NOMINAL & SIGNAL indicators 2 LOCK indicator 3 POWER indicator 4 POWER switch 5 COM port 6 WORD CLOCK THRU connector 7 WORD CLOCK 75 ON/OFF switch 8 WORD CLOCK IN connector 9 OUTPUT (BAL) connectors 10 Power cable 11 SLOT PANEL LAYOUT DA824 4 Front Panel Rear Panel DA824 5 CIRCUIT BOARD LAYOUT DA DC PNSW JK MAIN MYSL 3NC2-V5364503 CN004 CN905 CN902 CN003 CN001 CN011 CN962CN961 CN963 CN010CN008 CN009 CN005 CN006 CN002 CN007 CN002 CN102 CN101CN301CN501CN701 CN302CN502CN702 CN901 CN904 CN052CN053 CN054 CN051 CN906 CN003 AC MYSL Power Transformer DA824 6 DIMENTIONS 67.567.5345 430 13 88 H: 97.5 2 30 2 30 48 (33) 274 355 D: 366.8 W: 480 Unit: mm DA824 7 WORD CLOCL SELECT IC917 44P YM3436DK (DIR2) WORD CLOCL SELECT D.F/DA AK4393 IC918 44P IC002 28P IC101IC102 IC102 IC103 IC103 IC203 IC203 OUTPUT 1 JK101 JK102 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK LOCK SYNC.Fs.64Fs.128Fs.256Fs YM3436DK (DIR2) WORD CLOCK IN THRU 75 IC902 IC923 SDATA PD VOUTL VOUTR BICK LRCK MCLK 6 5 7 6 5 7 2 3 1 2 3 1 6 5 7 MUTE MUTE JK201 JK202 IC201IC202 IC202 OUTPUT 2 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK 2 3 1 2 3 1 6 5 7 2 3 1 6 5 7 MUTE MUTE JK301 JK302 D.F/DA AK4393 IC003 28P IC301IC302 IC302 IC303 IC303 IC403 IC403 OUTPUT 3 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK SDATA PD VOUTL VOUTR BICK LRCK MCLK 6 5 7 6 5 7 2 3 1 2 3 1 6 5 7 MUTE MUTE JK401 JK402 IC401IC402 IC402 OUTPUT 4 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK 2 3 1 2 3 1 6 5 7 2 3 1 6 5 7 MUTE MUTE JK501 JK502 D.F/DA AK4393 IC004 28P IC501IC502 IC502 IC503 IC503 IC603 IC603 OUTPUT 5 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK SDATA PD VOUTL VOUTR BICK LRCK MCLK 6 5 7 6 5 7 2 3 1 2 3 1 6 5 7 MUTE MUTE JK601 JK602 IC601IC602 IC602 OUTPUT 6 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK 2 3 1 2 3 1 6 5 7 2 3 1 6 5 7 MUTE MUTE JK701 JK702 JK801 JK802 D.F/DA AK4393 CPU COM SRAM 256K IC005 28P IC909 CN903 IC901 IC926 SRAM 256K IC927 IC701IC702 IC702 IC703 IC703 IC803 IC803 OUTPUT 7 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK SDATA PD VOUTL VOUTR BICK LRCK MCLK 6 5 7 6 5 7 2 3 1 2 3 1 6 5 7 MUTE MUTE IC801IC802 IC802 OUTPUT 8 SIGNAL +4dBV 15dBU 18dBU 24dBU LPF NOMINAL PEAK 2 3 23 21 22 23 1 2 3 1 6 5 7 2 3 1 6 5 7 MUTE MUTE KEC-92537 RST MUTE LOCKWCLK SLTWCLK BNCA(1-10) D(0-15) TR,RX TR,RX FLASH MEMORY 8M IC919 LOCK POWER SYNC Fs 64Fs 128Fs 256Fs WCLK SDATA A(1-10) D(0-15) TR,RX SLOT MUTE BA BA SH7042A 112P DAJK MAIN 1413 71 3,4 6 3615 11 610 151825 19 44 50,51 4387 89 84 104,105 5 6 4 7 3 23 21 22 23 5 6 4 7 3 23 21 22 23 5 6 4 7 3 23 21 22 23 5 6 4 7 3 BLOCK DIAGRAM DA824 8 DISASSEMBLY PROCEDURE DA JK Top cover Power transformer IF plate 180 360 180 420 290380 X16280A 400 X14 300 400: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800) (Fig. 1) 420: Bind Head Screw A4.0X12 MFZN2BL (VP156900) (Fig. 2) 350 MAIN 1.Top Cover 1-1Remove the fourteen (14) screws marked 400. The top cover can then be removed. (Fig. 1) 2.Circuit Boards and Units Remove the top cover, each circuit board and unit can then be removed. Circuit Board and Unit MAIN JK DA DC Assembly Power Transformer A 280 290 300 380 350 360 200 180 Screw Bonding Screw 4.0X8 MFZN2BL (VS154500) Bonding Screw 3.0X6 MFZN2BL (VS863000) Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230) Bonding Tapping Screw 3.0X8 MFZN2BL (VN41330) Bonding Tapping Screw 3.0X8 MFZN2BL (VN41330) Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230) Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800) Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800) 2 1 2 5 16 6 4 2 4 Ref. No.ScrewQTY 2 2 2 1 2 2 1 3 1 Fig. 3.MYSL Circuit Board *Note that remove card before following operation. 3-1Remove the top cover. (See procedure 1.) 3-2Remove the MAIN circuit board. (See procedure 2.) 3-3Remove the two (2) screws marked 420. The IF plate can then be removed. (Fig. 2) 3-4Remove the four (4) screws marked 250. The OPT assembly can then be removed. (Fig. 3) 3-5Remove the two (2) screws marked 240. The MYSL circuit board can then be removed. (Fig. 3) DA824 9 250 240 110 X2 Fuse 240 200DC assembly OPT assembly 200 MYSL AC AC 250 240: Bind Head Screw 4.0X8 MFZN2BL (EG340360) 250: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300) (Fig. 3) 60A: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800) 110: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300) (Fig. 4) Rear Panel Assembly 60A X3 4.AC Circuit Board 4-1Remove the top cover. (See procedure 1.) 4-2Remove the three (3) screws marked 60A and the two (2) screws marked 110. The AC circuit board can then be removed. (Fig. 4) *The fuse is not a part of the AC circuit Board. When you replace the AC circuit board, you should remove the fuse from the board, and put it back into the holder on the new board. 5.DC Circuit Board 5-1Remove the top cover. (See procedure 1.) 5-2Remove the DC assembly. (See procedure 2.) 5-3Remove the four (4) screws marked 60B. The transistor holder can then be removed. (Fig. 5) 5-4Remove the three (3) screws marked 40. The DC circuit board can then be removed. (Fig. 5) *The four fuses are not part of the DC circuit Board. When you replace the DC circuit board, you should remove the fuses from the board, and put it back into the holder on the new board. 6.PN Circuit Board and SW Circuit Board 6-1Remove the top cover. (See procedure 1.) 6-2Remove the six (6) screws marked 130. The right and left rack mount angles can then be removed. (Fig. 6) 6-3Remove the six (6) screws marked 70. The front panel can then be removed. (Fig. 7) 60B 40 130 130 130 DC 40: Bind Head Tapping Screw-B A3.0X8 MFZN2BL (VP157000) 60B: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300) (Fig. 5) 130: Oval Head Screw 4.0X8 MFZN2BL (VS153600) (Fig. 6) DC Assembly 40 40 Transistor holder Rack mount angle Rack mount angle 130 Fuse Fuse 70 PN SW 70: Oval Head Screw 4.0X8 MFZN2BL (VS153600) (Fig. 7) 30: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230) 50: Bonding Screw 3.0X6 MFZN2BL (VS863000) 70 3050 50 30 7070Front panel 30 DA824 10 6-4PN Circuit Board: Remove the four (4) screws marked 30. The PN circuit board can then be removed. (Fig. 7) 6-5SW Circuit Board: Remove the two (2) screws marked 50. The SW circuit board can then be removed. (Fig. 7) DA824 11 LSI PIN DESCRIPTION PIN NO. I/OFUNCTIONNAME PIN NO. I/OFUNCTIONNAME 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 DAUX HDLT DOUT VFL OPT SYNC MCC WC MCB MCA SKSY XI XO P256 LOCK Vss TC DIM1 DIM0 DOM1 DOM0 KM1 I O O O O O O O O O I I O O O O I I I I I Auxiliary input for audio data Asynchronous buffer operation flag Audio data output Parity flag output Fs x 1 Synchronous output signal for DAC Fs x 1 Synchronous output signal for DSP Fs x 64 Bit clock output FS x 1 Word clock output Fs x 128 Bit clock output Fs x 256 Bit clock output Clock synchronization control input Crystal oscillator connection or external clock input Crystal oscillator connection VCO oscillating clock connection PLL lock flag Logic section power (GND) PLL time constant switching output Data input mode selection Data input mode selection Data output mode selection Data output mode selection Clock mode switching input 1 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 RSTN Vdda CTLN PCO (NC) CTLP Vssa TSTN KM2 KM0 FS1 FS0 CSM EXTW DDIN LR Vdd ERR EMP CD0 CCK CLD I I O I I I I O O I I I O O O O I I System reset input VCO section power (+5V) VCO control input N PLL phase comparison output VCO control input P VCO section power (GND) Test terminal. Open for normal use Clock mode switching input 2 Clock mode switching input 0 Channel status sampling frequency display output 1 Channel status sampling frequency display output 0 Channel status output method selection External synchronous auxiliary input word clock EIAJ (AES/EBU) data input PLL word clock output Logic section power (+5 V) Data error flag output Channel status emphasis control code output 3-wire type microcomputer interface data output 3-wire type microcomputer interface clock input 3-wire type microcomputer interface load input YM3436DK (XG948E00) DIR2 (Digital Format Interface Receiver)MAIN: IC917, 918 PIN NO. I/OFUNCTIONNAME PIN NO. I/OFUNCTIONNAME 1 2 3 4 5 6 7 8 9 10 11 12 13 14 DVSS DVDD MCLK /PD BICK SDATA LRCK SMUTE/CS DFS DEM0/CCLK DEM1/CDTI DIF0 DIF1 DIF2 - - I I I I I I I I I I I I Digital ground Digital power supply Master clock Power down mode Audio serial data clock Audio serial data input L/R clock Soft mute Double speed sampling mode De-emphasis enable Digital input format 15 16 17 18 19 20 21 22 23 24 25 26 27 28 BVSS VREFL VREFH AVDD AVSS AOUTR- AOUTR+ AOUTL- AOUTL+ VCOM P/S CKS0 CKS1 CKS2 - I I - - O O O O O I I I I Substrate ground Low level voltage reference High level voltage reference Analog power supply +5 V Analog ground Rch negative analog output Rch positive analog output Lch negative analog output Lch positive analog output Common voltage output Parallel/serial select Master clock select AK4393-VS-E2 (XW029A00) DAC (Digital to Analog Converter)DA: IC2-5 DA824 12 PIN NO. I/OFUNCTIONNAME PIN NO. I/OFUNCTIONNAME 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 PE14 PE15 VSS A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 VCC A17 VSS /RAS /CASL /CASH VSS RDWR / PB5 A18 A19 A20 PB9 /A21 VSS /RD /WDTOVF /WRH VCC /WRL VSS /CS1 /CS0 PA9 / TCLKD /IRQ2 / TCLKC /CS3 /CS2 /IRQ1 TXD RXD /IRQ0 PA1 / TXD0 PA0 / RXD0 D15 D14 D13 VSS D12 O O I O O O O O O O O O O O O O O O O O I O I O O O O O O O O O I O O O I O I O O O I O O I O I I O I I/O I/O I/O I I/O Port E Port E Ground Address bus Power supply Address bus Ground Row address strobe Column address strobe (low) Column address strobe (high) Ground DRAM read/write / Port B Address bus Po