Marantz 2230 B Service Manual

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TABLE OF CONTENTS

SECTION PAGE
1. INTRODUCTION ........................................................... 1
2. SERVICE NOTES ........................................................... 1
3. TEST EQUIPMENT REQUIRED FOR SERVICING ................................ 2
4. AM ALIGNMENT PROCEDURE ........................ I ....................... 2

4.1 AM IF Alignment ...................................................... 2
4.2 AM Frequency Range and Tracking Alignment ................................ 2
5. FM ALIGNMENT PROCEDURE ............................................... 3
6. STEREO SEPARATION ALIGNMENT .......................................... 3
7. MUTING THRESHOLD ADJUSTMENT ......................................... 3
8. FM DOLBY LEVEL ADJUSTMENT ............................................ 3
9. POWER AMPLIFIER ADJUSTMENT ........................................... 3
10. POWER SUPPLY ADJUSTMENT ........... ' .................................... 3
11. MAJOR COMPONENT LOCATIONS ........... - ................................. 4
11.1 Front Panel Adjustment and Component Locations ............................. 4
11 .2 Main Chassis Component Locations (Top View) ............................... 4
11.3 Rear Panel Adjustment and Component Locations ............................. 5
11.4 Main Chassis Component Locations (Bottom View) ............................. 5
12. DIAGRAM AND COMPONENT LOCATIONS ................................. L . . 6
12.1 FM Front End and AM Tuner Assembly (P100) Schematic Diagram and
Component Locations ................................................... 6
12.2 FM IF Amplifier, Detector, Muting Control and Meter Unit Assembly
(P200) Schematic Diagram and Component Locations ........................... 8
12.3 MPX Stereo Decoding Amplifier Assembly (P300) Schematic Diagram
and Component Locations ................................................ 9
12.4 Phono Amplifier Assembly (P400) Schematic Diagram and Component Locations ..... 10
12.5 Power Amplifier Assembly (P700) Schematic Diagram and Component Locations ..... 12
12.6 Power Supply Assembly (P800) Schematic Diagram and Component Locations ....... 14
12.7 Dolby FM Set Assembly (PCOI) Schematic Diagram and Component Locations ....... 15
12.8 Dial Lamp Assembly (P201) Schematic Diagram and Component Locations .......... 16
12.9 Tone Amplifier Assembly (PE01) Schematic Diagram and Component Locations ...... 17
12.10 Filter Assembly (PH01) Schematic Diagram and Component Locations ............. 18
12.11 Loudness, Muting, System 1 and 2 Spkr Switch Assembly (PTO1) Schematic Diagram
and Component Locations . . . 20

13. BLOCK DIAGRAM .......................................................... 22

14. SCHEMATIC DIAGRAM ...................................................... 23

15. CIRCUIT DIAGRAM ....... 25

16. EXPLODED MECHANICAL DIAGRAM .......................................... 27

17. PARTS LIST ....................... '. .................................. ' ..... 29

18. TECHNICAL SPECIFICATIONS ............. 39

19. PACKING ................................................................. 41

SERVICE INFORMATION FOR EUROPEAN MODEL ................................ 42