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Fostex ADDA-2 PCB Service Manual Supplement
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Fostex ADDA-2 PCB Service Manual Supplement

Fostex ADDA-2 PCB Service Manual Supplement

Digital master recorder
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Service Manual Supplement
ADDA-2 PCB
for
Model D-25/D-30
Digital Master Recorder

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Summary of Contents for Fostex ADDA-2 PCB

  • Page 1 Service Manual Supplement ADDA-2 PCB Model D-25/D-30 Digital Master Recorder...

  • Page 2: Safety Instructions

    CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The lightening flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage”...
  • Page 3 Adjustment procedures, parts list, pattern drawing and circuit diagrams are given in this manual to assist the service technician in maintaining the D-25 / D-30 with ADDA-2 PCB assy. For your information, the followings are the serial number of D-25 / D-30 with ADDA-2 PCB assy. D-25...

  • Page 4: Adjusting Procedures

    Playback the 1kHz, 0dB section (PROG NO. 1) of SONY test tape TY-7551. Adjust R192 (CH 1) and R292 (CH 2) on the ADDA-2 PCB so that the AC volt meter reading is +2dBV. By this adjustment, a 1kHz, +16dBm sine wave should appear at the D-25/D-30 audio output.

  • Page 5: Ad Level Adjustment

    Output a 1kHz, +4dBm sine wave signal from the sine wave oscillator. Under this setting, a 1kHz, +4dBm sine wave signal will be applied to the D-25/D-30 audio input terminal. Adjust R191 (CH 1) and R291 (CH 2) on the ADDA-2 PCB so that the AC volt meter reading is -10dBV. CH 1...

  • Page 6: Parts List

    D-25/D-30 ADDA-2 3. PARTS LIST 8274121000 PCB Assy, ADDA-2, D-25/D-30 Ref. No. Part No. Description U001 8236540301 ST, AN, REGULATOR, NJM78M05D U002 8236561004 ST, DG, 74HCU04 U003-006 8236570101 ST, DG, DRIVER, DTC114EK U007-013 8236570401 ST, DG, DRIVER, DTA114EK U021 8236502700 ST, DA, ADC, AK5340 U022 8236560074 ST, DG, 74HC74 U023...
  • Page 7 RESISTORs Ref. No. Part No. Description R160, 260 8230500562 ST, CARBON, 1/10W, 5.6K, 5% R161, 261 8230500222 ST, CARBON, 1/10W, 2.2K, 5% R162, 262 8230500222 ST, CARBON, 1/10W, 2.2K, 5% R163, 263 8230500222 ST, CARBON, 1/10W, 2.2K, 5% R181, 281 8230500331 ST, CARBON, 1/10W, 330, 5% R182, 282 8230500103 ST, CARBON, 1/10W, 10K, 5% R183, 283 8230500103 ST, CARBON, 1/10W, 10K, 5% R184, 284 8230503471 ST, CARBON, 1/2W, 470, 5%...
  • Page 8 D-25/D-30 ADDA-2 4. PATTERN DRAWING PARTS SIDE VIEW R291 : AD LEVEL CH2 R191 : AD LEVEL CH1 R292 : DA LEVEL CH2 R192 : DA LEVEL CH1 C283 C183 R217 C207 R216 C206 C201 C211 C212 R223 R201 U201 U202 C204 C210...
  • Page 9 FOIL SIDE VIEW CL51 C220 C219 R291 C213 C222 C120 C119 R191 C113 C122 C253 C250 Q241 R292 C241 C141 C153 C150 Q141 R192 D-25/D-30 ADDA-2 C201 C201 Q281 C283 C183 Q181...
  • Page 10 D-25/D-30 ADDA-2 5. CIRCUIT DIAGRAMS ADDA2, ROOT A+24 A+18 A+24 AGNDO A-24 A+18 AGND A-18 LINEMUTE AOUT1 AGNDO1 AIN1 AGNDI1 MOUT1 AGNDO 8283-13P ANALOG I/O 1 A-24 AGND AGNDO A-18 A+24 A+18 AGNDO1 A+24 AGNDO A-24 A+18 AGND A-18 LINEMUTE AOUT2 AGNDO2 AIN2...
  • Page 11 ADDA2, AD C103 10p R103 10k C101 R101 C102 10/35 VLIN1 U101B NJM4560M C104 47/25 R102 R104 R105 R106 3.3k Q101 Q102 2SC2878 2SC2878 2SC2878 AGNDI1 AGNDI1 L-18 R109 2.2k D101 DAN202K L-18 R110 2.2k D102 DAN202K L-18 R111 2.2k D103 DAN202K EMPHA C203 10p...
  • Page 12 D-25/D-30 ADDA-2 ADDA2, DA 22 H AK4320 0.01 0.01 10/16 ZMUTE DVDD AGNDO3 DVSS DGND1 MSCK /RST_ADDA BICK AOUTL SDATA AOUTR DA_DATA LRCK LRCK SMUTE HOLD DEMO A+18 0.01 U52A C141 NJM4560M 47/16 R142 2.7k C142 R141 C143 680p R143 R145 2.2k AGNDO3...
  • Page 13 ADDA2, MONITOR C181 AOUT1 R182 AGND01 MONIMUTE C281 AOUT2 R282 AGND02 A+18 A+18 A-18 A-18 C182 R181 A+18 0.01 R184 AGNG01 U81A D181 R183 NJM4560M DAN202K 0.01 A-18 AGNG01 C282 AGNG01 R281 R284 U81B D281 NJM4560M R283 DAN202K D-25/D-30 ADDA-2 C183 R185 10/35...
  • Page 14 D-25/D-30 ADDA-2 FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A. © PRINTED IN JAPAN OCT 1998 8288776000...

This manual is also suitable for:

D-25D-30