Marantz SR800 - Test Equipment Required for Servicing

INTRODUCTION
This service manual was prepared for use by Authorized
Warranty Stations and contains service information for
Maranz Model SR 800 Stereophonic Receiver.
1. P.W. BOARDS
As can be seen from the circuit diagram the chassis of
Model SR 800 consists of the following units. Each unit
mounted on a printed circuit board is described within the
square enclosed by a bold dotted line on the circuit dia-
Servicing information and voltage data included in this gram.
manual are intended for use by the knowledgeable and ex-
perienced technician only. All instructions should be read 1. Tuner............ mounted on P.W. Board P100
carefully. No attempt should be made to proceed without
a good understanding of the operation of the receiver.
2. Main Amp/Power Supply
Se: Seiad eee Fw eas mounted on P.W. Board P700
3. Volume/Balance..... mounted on P.W. Board PEOO
The parts list furnishes information by which replacement 4. Tone Contro!l....... mounted on P.W. Board PFOO
parts may be ordered from the Marantz Company. A simple 5. Pushswitch ........ mounted on P.W. Board PSOO
description is included for parts which can usually be ob- 6. Headphone Jack ..... mounted on P.W. Board PWOO
tained through local suppliers. 7. Speaker Terminal .... mounted on P.W. Board PW50
8. Speaker Switch ..... mounted on P.W. Board PX00
9. StereoLED........ mounted on P.W. Board PYOO
10. Dial Pointer Lamp . Mounted on P.W. Board PZ00
11. Tuning Meter Lamp... mounted on P.W. Board PZ50
2. TEST EQUIPMENT REQUIRED FOR SERVICING
This table lists the test equipment required for servicing the Model SR 800 Receiver.
AM Signal Generator aii ieee. Signal source for AM alignment
EM Signal G Signa! source for FM alignment
MPX ane ; pahaed Stereo separation alignment and trouble
Signal Generator shooting
Sound Technology
Model 1000A
Distortion measurements
Sinewave and squarewave signal source
Voitage measurements (AC)
Distortion Analyzer
Audio Oscillator
AC VTVM
Sound Technology
Mode! 1700A
Waveform analysis and trouble shooting and
ASO alignment
MPX Oscillator adjustment (VCO)
Trouble shooting
Tektronix Model T932
Philips Mode! 3232
Fluke Mode! 1900A
Oscilloscope
Frequency Counter
Circuit Tester
Fluke Model 8000 “‘Digita!’’ Simpson
Mode! 313, Triplet Model 801
Simpson Model 1379
DC VTVM Voltage measurements (DC)
Monitors primary power to amplifier
AC Wattmeter
Monitors amplifier output under short circuit
aa Nttiee gin Wane condition
Line Voltmeter Simpson Model 1359 Sen iters potential OF poimaly Rawer.to
amplifier
: Superior Electronic Co.,
Variable Autotransformer Powerstat Model 116B—-10A
Use phono plug with 600-ohm Shorts amplifier input to eliminate noise
across center pin and shell pickup
Provides 8-ohm load for amplifier output
Output Load (8 ohms, :
+0.5%, 100W) PammereiaOlede termination
Output Load (4 ohms, : Provides 4-ohm load for amplifier output
+0.5%, 100W) Commercial Stade termination
3
Adjusts level of primary power to amplifier
Shorting Piug