McIntosh MDA1000 free download

File name McIntosh-MDA1000 DA conv.pdf

D/A CONVERTER CONTENTS Performance Specifications ... 2 Notes ... 2 Rear Panel ... 3 Section Location ... 4 Block Diagram ... 5 - 6 Interconnection Diagram ... 7 - 8 Main Schematic and PCB ... 9 - 18 Keyboard Supply Schematic and PCB ... 19 - 20 Display Schematic and PCB ... 21 - 22 Dataport Schematic and PCB ... 23 - 24 Parts List ... 25 - 30 Exploded View and Parts List ... 31 - 32 Repacking Instructions ... 33 SERVICE MANUAL PERFORMANCE SPECIFICATIONS Analog Audio Specifications Frequency Response +/-0.5dB from 4Hz to 45,000Hz (Sampling Frequency ­ 96kHz and 88.2kHz) +/-0.3dB from 4Hz to 22,000Hz (Sampling Frequency ­ 48kHz) +/-0.3dB from 4Hz to 20,000Hz (Sampling Frequency ­ 44.1kHz) +/-0.3dB from 4Hz to 15,000Hz (Sampling Frequency ­ 32kHz) Total Harmonic Distortion 0.002% at 1,000Hz Signal To Noise Ratio Better than 110dB (A Weighted) Dynamic Range Better than 100dB (1,000Hz) Rated Output Voltage 2V Unbalanced Outputs (Bypass On Mode) 6V Unbalance Outputs (Bypass Off Mode) 2V Balanced Outputs (Bypass On Mode) 6V Balanced Outputs (Bypass Off Mode) Coaxial Inputs (1, 2 and 3) 0.5V p-p @ 75ohms Optical Inputs (4, 5 and 6) -15 ~ -20dBm XRL Input (7) 5V p-p @ 110ohms Sampling Frequencies 96kHz, 48kHz, 44.1kHz and 32kHz General Specifications Power Requirements 100 Volts 50.60Hz, 20 watts 110 Volts 50/60Hz, 20 watts 120 Volts 50/60Hz, 20 watts 220 Volts 50/60Hz, 20 watts 230 Volts 50/60Hz, 20 watts 240 Volts 50/60Hz, 20 watts Note: Refer to the rear panel of the MDA1000 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm), Height is 6 inches (15.24cm) including feet, Depth is 16-1/8 inches (40.96cm) including Front Panel and Knobs Weight 24 pounds (10.89kg) net, 38 pounds (17.24kg) in shipping carton Digital Audio Specifications Digital Audio Format IEC958, S/PDIF NOTES 1. The heavy notes on the schematic denote the primary signal path. 2. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 3. Unless otherwise specified: a. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. Inductor values are in microhenries (uH). 4. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1 5. WARNING Parts marked with the symbol have c