User manual FOSTEX ADDA-2 PCB SUPPLEMENT

[. . . ] Retain instructions - The safety and operating instructions should be retained for future reference. Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to. Follow instructions - All operating and use instructions should be followed. Water and Moisture - The appliance should not be used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. [. . . ] All other servicing should be referred to qualified service personnel. 10. 11. 12. 6. 13. 14. 15. 7. 8. An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn. Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation - The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. 16. 17. D-25/D-30 ADDA-2 TABLE OF CONTENTS 1. 10 NOTES * 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 USA/CND EUR UK D-30 USA/CND EUR UK : 0200407 and onwards : 0600407 and onwards : 0700191 and onwards : 0920866 and onwards : 0920881 and onwards : 0920901 and onwards 3 D-25/D-30 ADDA-2 1. DA Level Adjustment D-25 / D-30 5030 AUDIO OUT (XLR) CH 1 CH 2 BAL IN (XLR) UNBAL OUT (RCA) CH 1 CH 2 AC VOLTMETER Fig. 1 Adjusting points : R192 (for CH 1) on ADDA-2 PCB R292 (for CH 2) on ADDA-2 PCB 1. Connect the Model 5030 input (XLR) to the D-25/D-30 audio output CH 1 and CH 2 and an AC volt meter to the Model 5030 (RCA) as shown in Fig. 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. 4 D-25/D-30 ADDA-2 1-2. AD Level Adjustment CH 1 UNBAL IN CH 2 OSC CH 1 5030 UNBAL OUT BAL IN CH 2 AC VOLTMETER BAL OUT CH 2 CH 1 CH 1 AUDIO IN (XLR) CH 2 AUDIO OUT (XLR) D-25 / D-30 Fig. 2 Adjusting points : R191 (for CH 1) on ADDA-2 PCB R291 (for CH 2) on ADDA-2 PCB 1. REF Marker position Sampling Frequency A1, A2 INPUT MONITOR Key : -12dB : 44. 1kHz : ON position 2. Connect the sine wave oscillator, Model 5030, and AC volt meter with D-25/D-30 as shown in Fig. 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. 5 D-25/D-30 ADDA-2 3. [. . . ] R160, 260 R161, 261 R162, 262 R163, 263 R181, 281 R182, 282 R183, 283 R184, 284 R185, 285 R186, 286 R191, 291 R192, 292 Part No. 8230500562 8230500222 8230500222 8230500222 8230500331 8230500103 8230500103 8230503471 8230500101 8230500104 8231014472 8231014472 RESISTORs Description ST, CARBON, 1/10W, 5. 6K, 5% ST, CARBON, 1/10W, 2. 2K, 5% ST, CARBON, 1/10W, 2. 2K, 5% ST, CARBON, 1/10W, 2. 2K, 5% ST, CARBON, 1/10W, 330, 5% ST, CARBON, 1/10W, 10K, 5% ST, CARBON, 1/10W, 10K, 5% ST, CARBON, 1/2W, 470, 5% ST, CARBON, 1/10W, 100, 5% ST, CARBON, 1/10W, 100K, 5% R-TRIM, H, CARBON, 4. 7K, 637A R-TRIM, H, CARBON, 4. 7K, 637A Ref. C001, 002 C003, 004 C005 C006 C007 C008 C009 C010 C011 C012 C021 C022, 023 C024~027 C028 C029 C030, 031 C032 C033 C034 C035 C036 C037 C038 C051 C052 C053 C054 C055 C056 C057 C058 C060~063 C064, 065 C081, 082 CAPACITORs ALU = Electrolytic CER = Ceramic type Part No. B101 J001 J002 J003 J004 J005 J006 L001 L021 L051 Y1601 7 D-25/D-30 ADDA-2 4. [. . . ]