Marantz 4220 Service Manual
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Extracted text from Marantz 4220 Service Manual (Ocr-read)
Page 1
7 SERVICE
MANUAL'
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mammal-I1
model 4220
This Service Manual should bev,_apply to Serial NO. 5001 (U.S.A.), 51601 (EUROPE), 60001 (CANADA) and
above.
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Page 2
TABLE OF CONTENTS
SECTION I PAGE
Introduction ............................................................ 1
Service Notes ............................................................ 1
AM Tuner ....... . ....................................................... 1
FM Tuner ............................................................... 1
Phono and Pre-Amplifier ................................................... 3
Main Amplifier ........................................................... 3
BTL (Balanced Transformerlessl Connection .................................... 3
Power Supply Unit ....................................................... 3
Audio Trouble Analysis .................................................... 3
Test Equipment Required for Servicing ........................................ 4
AM Alignment Procedure. . . . . .............................................. 5
FM Alignment Procedure .......................... . ........................ 5
Audio Adjustment ........................................................ 6
Parts List ............................................................... 15
Technical Specifications ........................ ' ............................ , 24
LIST OF ILLUSTRATIONS
FIGURE PAGE
1 Dial Stringing ....................................................... '6
2 Front Panel Adjustment and Component Locations .......................... 7
3 Main Chassis Component Locations (Top View) ............................. 7
4. Rear Panel Adjustment and Component Locations ........................... 8
5. Main Chassis Component Locations (Bottom View) .................. ......... 8
6 FM and AM Tuner Assembly P100 Component Locations ...................... 9
7 Tone Amplifier and Loudness Assembly P400 Component Locations ............. 9
8 Phono Amplifier Assembly P200 Component Locations ....................... 9
9. SO Decoder Assembly P300 Component Locations .......................... 9
10. Power Amplifier Assembly P700 Component Locations ....................... 10
11. Power Supply Unit Assembly P800 Component Locations ..................... 10
12. Balance Control Unit Assembly PGO1 Component Locations ................... 10
13. Indicator Lamps Assembly PY01 Component Locations ....................... 10
14. Schematic Diagram ................................................. 11, 12
15. Exploded Mechanical Diagram ......................................... 13, 14
TABLE . PAGE
1. Test Equipment Required for Servicing ................................... 4