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.
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AD824 SPECIFICATIONS MY8-AE, MY8-TD 39.69–50.88 kHz Sampling rate MY8-AT 41.013–50.88 kHz AD conversion resolution 24-bit linear, 128-times oversampling -1.5, +1 dB, 20 Hz–20 kHz, GAIN +10 dB Frequency response -3, +1 dB, 20 Hz–20 kHz, GAIN -62 dB Dynamic range * 110 dB (typical), GAIN +10 dB ±1 dB @ 1 kHz, GAIN -62 dB to +10 dB...
AD824 Analog Input Input Level For Use Actual Load Connection GAIN with Connector Max. Impedance Nominal Nominal before clip -62 dB -48 dB 50–600 Ω -62 dB (615 µV) (3.08 mV) XLR-3-31 type 3k Ω lines INPUT 1–8 * mics &...
AD824 PANEL LAYOUT Front Panel WORD CLOCK PEAK PEAK GAIN INTERNAL POWER NOMINAL NOMINAL 44.1kHz 48kHz SLOT SIGNAL SIGNAL +48V +48V +48V MASTER OFF ON AD CONVERTER 12 13 PEAK, NOMINAL & SIGNAL indicators GAIN display GAIN control POWER indicator...
AD824 DISASSEMBLY PROCEDURE Top Cover Remove the fourteen (14) screws marked [500]. The top cover can then be removed. (Fig. 1) Circuit Boards and Units Remove the top cover, each circuit board and unit can then be removed. Circuit Board and Unit Ref.
AD824 PN Circuit Board: Remove the four (4) screws marked [30]. The PN circuit board can then be removed. (Fig. 9) SW Circuit Board: Remove the PSW knob marked [90]. (Fig. 9) Remove the two (2) screws marked [50B]. The SW circuit board can then be removed.
AD824 LSI PIN DESCRIPTION YM3436DK (XG948E0) DIR2 (Digital Format Interface Receiver) MAIN: IC921, 922 NAME FUNCTION NAME FUNCTION DAUX Auxiliary input for audio data RSTN System reset input HDLT Asynchronous buffer operation flag Vdda VCO section power (+5 V) DOUT...
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AD824 HD6477042AF28 (XV731A00) CPU MAIN: IC911 NAME FUNCTION NAME FUNCTION PE14 Port E PE15 Port E Data bus Ground Ground Data bus Power supply Address bus Data bus Ground XTAL Crystal oscillator Mode control EXTAL Crystal oscillator Mode control Non-maskable interrupt request...
AD824 CIRCUIT BOARDS AC Circuit Board (J, U, V) (XY031C0) ······································································· 19 AC Circuit Board (H,W,B) (XY032C0) ······································································· 19 AD Circuit Board (XY028A0)······················································································ 28 DC Circuit Board (J, U, V) (XY031C0) ······································································· 34 DC Circuit Board (H,W,B) (XY032C0) ······································································· 35 HA Circuit Board (XY029A0)······················································································...
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AD824 MAIN Circuit Board from DC-CN010 to AD-CN003 3NA-V579130...
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AD824 MYSL Circuit Board Component side Battery VN103500 VN103600(Battery holder for VN103500) Notice for back-up battery removal Battery Push the battery as shown in figure, Component side then the battery will pop up. Druk de batterij naar beneden zoals aangeven in de tekening, de batterij Battery holder springt dan naar voren.
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AD824 JK Circuit Board Pattern side Pattern side AD, JK: 3NA-V579120...
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AD824 PN Circuit Board from DC-CN009 Component side 3NA-V579100...
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AD824 PN Circuit Board Pattern side 3NA-V579100...
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AD824 DC Circuit Board (J, U, V) Power transformer Power transformer to MYSL-CN052 to MAIN-CN906 to AD-CN001 Component side 3NA-V579140...
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AD824 DC Circuit Board (H, W, B) Power transformer Power transformer to MYSL-CN052 to MAIN-CN906 to AD-CN001 Component side 3NA-V579150...
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INSPECTION Preparations Conditions · The setting for AD824 is gain 10 dB, word clock INT 48 kHz. · Word clock in 75 ohms is set to on. · Signal input of only the CH to be measured. · Input signal to NCH when measuring NCH.
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1 kHz +24 dB +18 dBu 18 +/-1 dBu INSERT OUT1 to 8CH Conditions: The load for AD824 insert out 1 to 8 channels is 10 kohms. (1) Maximum input Input frequency Input level Specified output level (AD824) Permissible range...
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· Insert MY8-AE card into the slot and connect to DSA1 via the D-sub-cannon converter box. · Set AD824 word clock settings to BNC. · Set AD824 word clock settings to 44.1 kHz and 48 kHz. WORD CLOCK Permissible range 44.1 kHz...
Stop bit: Parity: none Next, while pressing [SEL3] and [SEL8] keys simultaneously, turn on the power. The AD824 will enter the test program mode and “d00” will flash on the 7segLED. The following will appear on the terminal software. ( The version of the test program will be shown as x.xx.) AD824_DIAG>...
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AD824 When in the test program execution, select the test program number for the gain encoder and the program can be executed each time the [+48V] key is pressed. During selection, the number will flash on the 7segLED and will change to steady on when the program is completed.
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AD824 SLOT and CPU connection check The first line on the screen shows the condition at the data bus from the left D15, D14..D1, D0. The second line on the screen shows the condition at the address bus from the left A15, A14 . . . A2, A1.
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AD824 [d02] SWITCH inspection Select the test program number [d02] with the gain encoder. The LED inspection will be executed when the [+48V] key is pressed. Or, it can also be executed by entering AD824_DIAG>d02 1. The LED near the relevant switch flashes.
(The software shown below is compatible up to the fourth unit.) 2-3. Reading the files to be loaded Click the [Browse] switch and the following window will open. Designate the files to be loaded to the AD824 and click PC/RS422 RS422 PC/RS422 RS422 the [Open] switch.
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AD824 2-4. Loading the program Click the [Load] switch and the program will start to load. When completed, the following message will be displayed. 2-5. Others Click the [Disconnect] switch to reset the AD824 to the regular mode.
AD824 ERROR MESSAGES The AD824 performs several diagnostic checks when it’s turned on. If a problem isdetected, one of the following error codes appears briefly on the GAIN display. Internal backup-battery voltage low. Internal memory data corrupt. Internal backup-battery voltage low and internal memory data corrupt.
AD CONVERTER PARTS LIST CONTENTS OVERALL ASSEMBLY······························································································································ 2 FRONT PANEL ASSEMBLY ····················································································································· 4 REAR PANEL ASSEMBLY ······················································································································· 5 DC ASSEMBLY ········································································································································· 6 ELECTRICAL PARTS ························································································································· 7~31 Notes: DESTINATION ABBREVIATIONS Australian model M: South African model British model Chinese model Canadian model South-east Asia model German model Taiwan model...
AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK IF Plate VZ678500 VP156900 Bind Head Screw A4.0X12 MFZN2BL CB076120 Label H,W,B ACCESSORIES V5436200 DSUB Cable New Parts RANK Japan only FRONT PANEL ASSEMBLY PART NO. DESCRIPTION REMARKS REF NO. RANK FRONT PANEL ASSEMBLY...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK R210 Carbon Resistor 10.0 1/4 J HF754100 R211 VC330400 Metal Film Resistor 47.0K 1/4 F R212 VC330400 Metal Film Resistor 47.0K 1/4 F R213 HF754100 Carbon Resistor 10.0 1/4 J R214 HF754100 Carbon Resistor 10.0 1/4 J...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK R408 Metal Film Resistor 2.0K 1/4 F VC327100 R409 HF754100 Carbon Resistor 10.0 1/4 J R410 HF754100 Carbon Resistor 10.0 1/4 J R411 VC330400 Metal Film Resistor 47.0K 1/4 F R412 VC330400 Metal Film Resistor 47.0K 1/4 F...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK R606 Metal Film Resistor 4.7K 1/4 F VC328000 R607 VC327100 Metal Film Resistor 2.0K 1/4 F R608 VC327100 Metal Film Resistor 2.0K 1/4 F R609 HF754100 Carbon Resistor 10.0 1/4 J R610...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK R802 Metal Film Resistor 6.8K 1/4 F VC328400 R805 VC326000 Metal Film Resistor 620.0 1/4 F R806 VC328000 Metal Film Resistor 4.7K 1/4 F R807 VC327100 Metal Film Resistor 2.0K 1/4 F...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK C928 Monolithic Ceramic Cap. B 470P 50V K UB012470 C929 UB245100 Monolithic Ceramic Cap. F 0.100 25V Z -931 UB245100 Monolithic Ceramic Cap. F 0.100 25V Z C932 UB051150 Monolithic Ceramic Cap.
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK IC927 MBM29F800BA-70PFTN FLASH ROM 8M XU948A00 IC928 I S 0 2 7 3 0 0 HD74LV273AFPEL D-FF IC929 I S 0 1 7 4 1 0 SN74LV174ANSR D-FF IC930 XU816A00 SN75121NSR LINE DRIVER...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK C103 Monolithic Ceramic Cap. F 0.100 25V Z UB245100 -105 UB245100 Monolithic Ceramic Cap. F 0.100 25V Z C106 UB044100 Monolithic Ceramic Cap. F 0.010 50V Z C107 UB044100 Monolithic Ceramic Cap.
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK IC501 NJM2068MD-T1 OP AMP XJ553A00 IC701 XJ553A00 NJM2068MD-T1 OP AMP LD101 VT838500 SLZ-135B-08-T1 RE PEAK 1 LD102 V4845500 SLZ-435B-08-T1 YE NOMINAL 1 LD103 VU091400 SLZ-235B-08-T1 GR SIGNAL 1 LD201 VT838500 SLZ-135B-08-T1 RE...
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AD824 PART NO. DESCRIPTION REMARKS REF NO. RANK Power Transformer CEE A H,W,B XY175B00 VN103500 Lithium Battery CR2032 VS228900 AC Cord Assembly 2P 15A VS229000 AC Cord Assembly 3P 10A VS229100 AC Cord Assembly 3P 6A VS229200 AC Cord Assembly...
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AD824 AD824 OVERALL CIRCUIT DIAGRAM 1/4 (MAIN, MYSL) SLOT MYSL KEC-92530 to DC-CN008 INVERTER MAIN BUFFER SYSTEM RESET SRAM 256K FLASH ROM 8M D-FF OP AMP BUFFER INVERTER BUFFER SRAM 256K to DC-CN010 BUFFER to PN-CN961 BUFFER MULTIPLEXER D-FF DECODER...
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AD824 AD824 OVERALL CIRCUIT DIAGRAM 2/4 (AD, JK) OP AMP OP AMP OP AMP BUFFER OP AMP OP AMP INVERTER to MAIN-CN909 to HA-CN101 OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP INSERT (BAL) OP AMP...
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AD824 AD824 OVERALL CIRCUIT DIAGRAM 3/4 (HA) MULTIPLEXER BUFFER OP AMP OP AMP to MAIN - CN903 INVERTER DECODER MULTIPLEXER OP AMP D-FF OP AMP D-FF D-FF MULTIPLEXER OP AMP D-FF OP AMP D-FF to DC - CN007 D-FF MULTIPLEXER...
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AD824 AD824 OVERALL CIRCUIT DIAGRAM 4/4 (PN, DC, SW, AC) OP AMP OP AMP OP AMP OP AMP to AD - CN002 Transistor Array to MAIN - CN904 Transistor Array +48V MASTER OFF / ON GAIN INTERNAL KEC-92527 to MAIN-CN905...