Marantz SR2000 - 2, Test Equipment Required Forservicing

INTRODUCTION
This service manual was prepared for use by Authorized
Warranty Stations and contains service information for
Marantz Model SR-2000 Stereophonic Receiver.
Servicing information and voltage data included in this
gram.
manual are intended for use by the knowledgeabte and ex-
perienced technician only. All instructions should be read 1
carefully. No attempt should be made to proceed without B)
a good understanding of the operation of the receiver.
The parts tist furnishes information by which replacement
parts may be ordered from the Marantz Company. A simple
description is included for parts which can usually be ob-
tained through local suppliers.
1. P.W. BOARDS
As can be seen from the circuit diagram the chassis of
Model SR-2000 consists of the follawing units. Each unit
mounted on a printed cifcuit board is described within the
square enclosed by a bold dotted line on the circuit dia-
moe W
Oo wm
2. TEST EQUIPMENT REQUIRED FOR SERVICING
. Tuner
. Main Amp/Power- Supply
. ToneAmp....--. ee rlurited on P.W. Board PEOO
. Pushswitch
. Headphone Jack ...... mounted on ?.W. Board PWOO
. Power Meter/Speaker Switch
sted aie 'y Shensndtetaw mounted on P,W,. Board PXOO
. Stereo LED ......... mounted on P,W. Board PYOO
. Dial Pointer Lamp
. Tuning Meter Lamp
side lesa gt. Since aegis mounted on PW. Board P100
mounted on P.W. Board P700
on Dedaw apis -. mounted on P.W. Board PSOO
. mounted on P.W. Board PZ00 —
. mounted on P.W. Board PZ50
This table lists the test equipment required for servicing the Model SR-2000 Receiver.
Manufacturer and Model No.
AM Signal Generator
Test Loop
~ Use with AM Signal Generator
FM Signai Generator
MPX Signal Generator
Sound Technology
Mode! 10004
Signal source for FM alignment
Stereo separation alignment and trouble
shooting —
Distortion Analyzer
Audio Osciliator
AC VTVM
Sound Technology
Model 1700A
Oscilloscape
“Tektronix Model T932
Distortion measurements |
Sinewave and squarewave signa! source
Voltage Measurements {AC)
Phili ips ‘Mode! 3232
Waveform analysis and troubie shooting and
ASO lignin
‘Frequency Counter
Fluke Model 4 900A
Circuit Tester
DC VTVM
AC Wattmeter
- Model 313, Triplet Model 80
Trouble shooting
Fluke Model 8000 “Digital” Simpson
vole measurements ae)
Simpson Model 1379
AC Ammeter
Line Voltmeter
Variable Autotransformer
Shorting Plug
Output Load. (8 ohms,
+ 0.5%, 100W}
Output Load (4 ohms,
+0,5%, 100W}
Commercial Grade (7-TOA}
Simpson Model 1359
Superior Electronic Co.,
__Powerstat Model 116B— 104A
Use phono plug with 600- ohm
across center pin and sheli
Commercial Grade
Commercial Grade
Monitors amplifier output andek short circuit
condition
Monitors potential of primary power to
amplifier
Adjusts level of primary power to eee
Shorts ariplitien input to. ‘eliminate noise
pickup
+ Provides 8-ohm load for amplifier output
termination
Provides 4-ohm load for amplifier output
termination