Marantz 1060 Service Manual page 5

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7. TEST EQUIPMENT REQUIRED FOR SERVICING
Table 1 lists the test equipment required for servicing the Model 1060 Stereo Console Amplifier.
The wattmeter, ac voltmeter, and variac may be assembled as a test fixture as shown
schematically in Figure 1, and the load resistors and ac ammeter may be assembled into a second
test fixture as shown in Figure2.
Manufacturer and Model No.
Item : Use
(or equivalent)
Weston Model CVQ-100P
(NOTE: Less than 0.02 per-
cent residual distortion Is re-
quired.)
Tektronix, Model 503; Data,
Model 555 |
RCA Senior Volt-Ohmyst,
Model WV-98C
Simpson, Model 390
Audio Oscillator Sinewave and squarewave Sig-
nal source.
Waveform analysis and trou-
bleshooting.
Oscilloscope
surements.
sumption of amplifier.
(0 to 10 amps)
Line Voltmeter
(0 to 150 vac)
Variable Autotransformer
(0 to 140 vac, 10 amps)
Shorting Plug
Monitors amplifier output un-
der short circuit condition.
Commercial Grade Monitors potential of primary
power to amplifier.
Powerstat, Model 116B Adjusts level of primary power
to amplifier.
Use phono plug with 600
ohms across center pin and
shell.
Commercial Grade
Shorts amplifier input to
eliminate noise pickup.
Discharges power supply filter
capacitors prior to disassembly
or resistance measurements.
Power Supply Bleeder
Resistor (10 ohms at 1 W)
Commercial Grade
Output Load Resistor
(8Q + 0.5%, 250W)
Output Load Resistor
(42 + 0.5%, 250W)
Output Load
Capacitor (0.5 mfd)
AC Power Control Box
Provides 8-ohm load for ampli-
fier output termination.
Commercial Grade Provides 4-ohm load for ampli.
fier output termination.
Provides capacitive load for
instability checks.
Mylar
Optional Item. Fabricate in
accordance with Figure1.
Monitors and controls primary
power for amplifier.
Optional Item. Fabricate in
accordance with Figure2.
Provides various amplifier
loads and can monitor shorted
output.
Amplifier Output
Load Box