Adc soundshaper three service manual

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adc soundshaper three service manual

Extracted text from adc soundshaper three service manual (Ocr-read)

Page 1

~---------------CONTENTS----------------~ PAGE ELECTRICAL PERFORMANCE SPECIFICATIONS 3 CI RCUIT DESCRiPTION ,4-9 SWITCH FUNCTIONS 0-12 DISASSEMBLY INSTRUCTIONS 2 BLOCK DIAGRAM . ADJUSTMENT PROCEDURES '- CALIBRATOR SCHEMATIC.................................. . . . . .. .. - TROUBLESHOOTING - SYMPTOM· CAUSE/REMEDY i7- ':' AMP P. C. B. (TOP & BOTTOM VI EWS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ~ POWER SUPPLY & METER P. C. B. (TOP & BOTTOM VI EWS) ~ SWITCH (L) P. c. B. (TOP & BOTTOM VIEWS) 21 SWITCH (R) P. c. B. (ROP & BOTTOM VIEWS) 22 SLIDE VOLUME (L) P. c. B. (TOP & BOTTOM VIEWS) 23 SLIDE VOLUME (R) P. C. B. (TOP & BOTTOM VIEWS) 24 ELECTRICAL PARTS LIST 25-34 EXPLODED VIEW PARTS LIST 35-36 MISCELLANEOUS PARTS LIST 37 SCHEMATIC DIAGRAM 38-39 EXPLODED VIEW 40-41 -2-

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- 3 - ELECTRICALPERFORMANCE SPECIFICATIONS (Unit)(Nominal) (Limit) Frequency response at flat position, I nput level =0.775 V (Hz) 5-100 K~U dB 5-100 K~?:5 dB Control Frequency accuracy at 26, 32, 39 Hz (%) ±5 ±10 at 47, 56, 68 Hz (%) ±5 ±10 at 84,100,120 Hz (%) ±5 ±10 at 150,180,215 Hz (%) ±5 ±10 at 260,320,390 Hz (%) ±5 ±10 at 470, 560, 680 Hz (%) ±5 ±10 at 840, 1 K, 1.2 KHz (%) ±5 ±10 at 1.5 K, 1.8 K, 2.15 KHz (%) ±2.5 ± 5 at 2.6 K, 3.2 K, 3.9 KHz (%) ±2.5 ± 5 at 4.7 K, 5.6 K, 6.8 KHz (%) ±2.5 ± 5 at 8.4 K, 10 K, 12 KHz (%) ±2.5 ± 5 at 15 K, 18 K, 21.5 KHz (%) ±2.5 ± 5 (Output level =0.775 V) Control range at 0.775 V Input (dB) +13.5+12~~·5 -13.5 -12~~.5 Harmonic Distortion at 1 V Output from 20 Hz to 20 KHz (%) 0.018 0.04 Hum and Noise ratio at 1 V Output (dB) 9085 (I nput shorted) (I H FA) Dynamic Range into 10 Kn load (V/rms) 109 (All Controls should be Flat) Input Impedance (Kn)75 Output Impedance at 1 KHz (n)10 Intermodulation Distortion at 1 V Output, 70/70 KHz at 4/1 ratio (%) 0.02 0.05 Meter tolerance (F requency at 1 KHz) at+12dBpoint (dB)±0.5±1.0 at OdBpoint (dB)±0.5±1.0 at-12dBpoint (dB)±0.5±1.0 at other points (dB)± 1.0± 1.5 NOTE: When each control range is measured, all other controls should be at center (0 dB).