Marantz 4140 Service Manual
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Extracted text from Marantz 4140 Service Manual (Ocr-read)
Page 2
TABLE OF CONTENTS
SECTION PAGE
Introduction 1
Service Notes . 1
Selector Switch 1
Mode Switch 1
Buffer Amplifier . 2
Balance Control . 2
Pre-Amplifier .......... 2
Main Amplifier .......... 2
BTL (Balanced Transformerless) Connection 3
Power Supply Unit .. 3
Trouble Analysis ...... 3
Power Amplifier Adjustment 3
Power Supply Adjustment 3
Meter Adjustment ............... 3
Test Equipment Required for Servicing ...... 4
Performance Verification 5
Parts List .................................... .. 22~ 29
Technical Specifications ...................................................................................................... 30
LIST OF ILLUSTRATIONS
FIGURE
1. AC Power Control Box Simplified Schematic ............. 6
2. Amplifier Output Load Box Simplified Schematic .. 7
3. Front Panel Adjustment and Component Locations 7
4. Main Chassis Component Locations (Top View) ...... 8
5. Rear Panel Adjustment and Component Locations 8
6. Main Chassis Component Locations (Bottom View) ........ 9
7. Tape Moni., Hi Filter Unit Assembly P250 Component Locations . 9
8. Phono Equalizer Amplifier Assembly P300 Component Locations. 10
9. Loudness Unit Assembly P350 Component Locations 10
10. Vari- Matrix Unit Assembly P500 Component Locations 10
11. Meter Rectifier Unit Assembly P550 Component Locations ...... 11
12. Temperature Compensation Unit Assembly P580 Component LocatIons
13. Power Amplifier Assembly P600 Component Locations .......
14. Power Supply Unit Assembly P800 Component Locations
15. AC Rectifier Assembly P850 Component Locations ..............
16. Balance Variable Resistor Unit Assembly P900Component Locations
17. Buffer, Pre-Amplifier Assembly PE01 Component Locations 14
18. Tone Amplifier Assembly PD01 Component Locations .......... 15
19. Main-Remote Speaker Switch Unit Assembly PL01 Component Locations 15
20. Tone Control Unit Assembly PJ01 Component Locations 16
21. Schematic Diagram ..................................
22. Exploded Mechanical Diagram
TABLE
1. Test Equipment Required for Servicing ...................................................................... 4