dbx 3BX III, Руководство по обслуживанию

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CONTENTS
SPECIFICATIONS (performance minimums)............................ 4
CIRCUIT DESCRIPTION.............................................. 1
SCHEMATIC CONVENTIONS .......................................... 1
SIGNAL PATH .................................................... 1
CONTROL-VOLTAGE (CV) PATH ...................................... 3
High-Band CV Path ............................................ 5
Low-Band CV Path ............................................. 7
Mid-Band CV Path ............................................. 7
LED DISPLAYS ................................................... 7
POWER SUPPLY and MUTE GENERATOR ................................ 8
ALIGNMENT PROCEDURE.............................................. 9
1. INSTRUMENTS REQUIRED ........................................ 9
2. INSPECTION and WARMUP ....................................... 9
3. POWER-SUPPLY TESTS .......................................... 9
4. CONTROL-CIRCUITRY TESTS ..................................... 9
5. VCA-SYMMETRY ADJUSTMENTS ................................... 12
6. VCA-GAIN ADJUSTMENTS ....................................... 13
7. PERFORMANCE TESTS .......................................... 14
MODEL 3BX III PRINTED CIRCUIT BOARD ASSEMBLY.................... 20
MODEL 3BX III MAIN ASSEMBLY..................................... 25