2. TEST EQUIPMENT REQUIRED FOR SERVICING
This table lists the test equipment required for servicing the Model PM-94 Stereo Amplifier.
Item
Use
Distortion Analyzer
Distortion measurements
Audio Oscillator
Sinewave and squarewave signal source
AC VTVM
Voltage measurements (AC)
Oscilloscope
Waveform analysis and trouble shooting and ASO alignment
Circuit Tester
Trouble shooting
DCVTVM
Voltage measurements (DC)
AC Wattmeter
Monitors primary power to amplifier
Line Voltmeter
Monitors potential of primary power to amplifier
Variable Autotransformer (0 ~ 140V AC, 10A)
Adjust level of primary power to amplifier
Shorting Plug
Shorts amplifier input to eliminate noise pickup
3. 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 Conversion Chart
Note on safety:
Symbol
ñ
Fire or electrical shock hazard. Only original parts
should be used to replace any part marked with symbol
ñ
. Any
other component substitution (other than original type), may
increase risk of fire or electrical shock hazard.
CAUTION
DISCONNECT POWER SUPPLY CORD FROM AC
OUTLET BEFORE CONVERTING VOLTAGE.
