McIntosh C 220 Service Manual
This is the 30 pages manual for McIntosh C 220 Service Manual.
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Extracted text from McIntosh C 220 Service Manual (Ocr-read)
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PERFORMANCE SPECIFICATIONS 2 Frequency Response +0, -0.5dB from 20Hz to 20,000Hz Total Harmonic Distortion 0.08% from 20Hz to 20,000Hz Main Output 2.5V for rated input Maximum Voltage Output 8V RMS Unbalanced, 16V RMS Balanced Sensitivity (for rated output) High Level, 450mV unbalanced, 900mV balanced Phono, 4.5mV Signal To Noise Ratio (A-Weighted) High Level, 90dB below rated output Phono, 80dB below 10mV input Input Impedance High Level, 22K ohms Phono, 47K ohms; 65pF Maximum Input Signal High Level, 5V Unbalanced, 10V Balanced Phono, 50mV (@ 1,000Hz) Output Impedance 250 ohms Voltage Gain High Level to Tape Output: 0dB High Level to Main Output: 15dB Phono to Main Output: 55dB Headphone Output Impedance 16 ohms to 250 ohms Tube Compliment Phono Circuitry: 2 - 12AX7A High Level Circuitry: 2 - 12AX7A Power Requirements 100 Volts, 50/60Hz at 75 watts 110 Volts, 50/60Hz at 75 watts 120 Volts, 50/60Hz at 75 watts 220 Volts, 50/60Hz at 75 watts 230 Volts, 50/60Hz at 75 watts 240 Volts, 50/60Hz at 75 watts Note: Refer to the rear panel of the C220 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm) Height is 6 inches (15.24cm) including feet Depth is 18 inches (45.72cm) including the Front Panel, Knobs and Cables Weight 21.1 pounds (9.59 kg) net, 37.5 pounds (17.05 kg) in shipping carton Shipping Carton Dimensions Width is 26-1/2 inches (67.3cm) Depth is 24-1/4 inches (62.2cm) Height is 11-3/4 inches (29.9cm) 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 critical characteristics. Use only replacement parts recom- mended by the manufacturer. NOTES
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C220 REAR PANEL SECTION LOCATIONS TOP VIEW W ITH COVER REMOVED 3
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C220 9 10 MAIN 050329 SCH 1 OF 4 2