Marantz 2238 B Service Manual

Page 2

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TABLE OF CONTENTS
1 SECTION PAGE
1. INTRODUCTION ................................................................ 1
2. SERVICE NOTES ........................................ . ....................... 1
3. TEST EQUIPMENT REQUIRED FOR SERVICING ........................................ 2
4. AM ALIGNMENT PROCEDURE ..................................................... Z
5. FM ALIGNMENT PROCEDURE ..................................................... 3
6. POWER AMPLIFIER ADJUSTMENT .................................................. 3
7. POWER SUPPLY ADJUSTMENT ..................................................... 3
8. VOLTAGE CONVERSION FOR EUROPEAN MODEL ...................................... 4
9. FTZ REGULATION FOR EUROPE .- .................................................. 4
10. MAJOR COMPONENT LOCATIONS .................................................. 5 _,
10.1 Front Panel Adjustment and Component Locations ...................................... 5 "2
10.2 Main Chassis Component Locations (Top View) ........................................ 5 ,
i 10.3 Rear Panel Adjustment and Component Locations ...... . ................................ Ii
, i 10. 4 Main Chassis Component Locations (Bottom View) ...................................... B
11. DIAGRAM AND COMPONENT LOCATIONS ........................................... 7
11.1 FM & AM Tuner Assembly (P200) Schematic Diagram and Component Locations .................. 7
11.2 Dial Lamp Assembly (PZOI) Schematic Diagram and Component Locations ................... _. . . II
11.3 DLB-i Socket Assembly (PK01) Schematic Diagram and Component Locations ................... 9
11.4 Main Amp. 81 Power Supply Assembly (P700) Schematic Diagram and Component Locations ......... 1U ,.
11.5 Tone Amp. Assembly (PE01) Schematic Diagram and component Locations .................... 13
11.6 FM Front End Assembly (P100) Schematic Diagram and Component Locations .................. 14
11.7 EU Amp. Assembly (P400) Schematic Diagram and Component Locations ...................... 15
12. BLOCK DIAGRAM ...................... . ....................................... 16
13. CONNECTION DIAGRAMS ..... . .................. . ............................... 17
13.1 For U.S.A. & Canadian Models ...... . . ............... . . . ......................... 17
13.2 For European Model ................ . . . . ..................................... 19
14. SCHEMATIC DIAGRAMS . . . . . . . .......... '. . . . . . . .1 .............................. 21
14.1 ForU..SA. &Canadian Models ................... . ........................ 21
14.2 For European Model ........ . .. ............... .. .. .......................... 23
15. EXPLODED MECHANICAL DIAGRAMS 25
15.1 Cabinet .......................... . . . ..................................... 25
15.2 Chassis ............................ ................................. . '21
15.3 Rear Panel for U. S A. 8: Canadian Models ............. .. . . . .......................... 29
15.4. Rear Panel for European Model ......... . .............. , ..................... . . . . . 29
16. PACKING MATERIAL EXPLODED VIEW ......... . . . . .................... . . .......... 3U
17. PARTS LIST .......................................... .................... 31
18. TECHNICAL SPECIFICATIONS .............. . . . . . .' .......... ' ....................... 4O