Marantz PM-50 - Required Test Equipment; Voltage Conversion Instructions

7. TEST EQUIPMENT REQUIRED FOR SERVICING
This table lists the test equipment required for servicing the Model PM-55 Stereo Amplifier.
Distortion Analyzer
Audio Oscillator
Distortion measurements
Sinewave and squarewave signal source
Voltage measurements (AC)
ACVTVM
Oscilloscope Waveform analysis and trouble shooting and ASO aignment
Circuit Tester Trouble shooting . ;
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DCVTVM Voltage measurements (DC)
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AC Wattmeter Monitors primary power to amplifier
Line Voltmeter Monitors potential of primary power to amplifier
Variable Autotransformer Adjust level of primery power to amplifier
Shorts amplifier input to eliminate noise pickup
Shorting Plug
8. VOLTAGE CONVERSION
® EUROPEAN MODEL ONLY
To convert the unit to a different power source voltage,
change the Position as illustrated in the drawing below.
VOLTAGE SELECTOR
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CAUTION
DISCONNECT POWER SUPPLY CORD FROM AC
OUTLET BEFORE CONVERTING VOLTAGE.
MZ 2299 15