Sharp SA-3131H High Quality Service Manual

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1. SPECIFICATIONS

2. FEATURES

3. PREPARATION FOR USE

4. DISASSEMBLY

5. DIAL CORD STRINGING

6. FRONT PARTS LAYOUT

7. REAR PARTS LAYOUT

8. BLOCK DIAGRAM

9. CIRCUIT DESCRIPTION

• AM SECTION

• FM RF SECTION

• FM IF SECTION

• FM DETECTION SECTIONS (Quadrature Detector)

• FM STEREO DEMODULATOR SECTION

• AIR CHECK CALIBRATION CIRCUIT

• FM MUTING CIRCUIT

• LOW – PASS FILTER

• TONE AMP. CIRCUIT

• EQUALIZER

• MAIN AMPLIFIER SECTION

• PROTECTION CIRCUIT (RELAY CIRCUIT)

• POWER SUPPLY CIRCUIT

10. ALIGNMENT INSTRUCTIONS

• REQUIRED EQUIPMENT

• AF ALIGNMENT

• AM IF ALIGNMENT

• MW RF ALIGNMENT

• LW RF ALIGNMENT

• FM ALIGNMENT

• FM TUNING METER ADJUSTMENT AND DISTORTION FACTOR ADJUSTMENT

• FM MUTING ADJUSTMENT AND FM STEREO V.C.O., SEPARATION ADJUSTMENT

• ADJUSTMENT OF AIR CHECK CAL

11. EQUIVALENT CIRCUIT OF INTEGRATED CIRCUIT

12. SCHEMATIC DIAGRAM

13. WIRING SIDE OF P.W. BOARD

14. POWER TRANSISTOR REPLACEMENT

15. TRANSISTOR TYPES

16. TROUBLE SHOOTING GUIDE

17. DIODE TYPES

18. WIRE CLIP

19. PARTS LIST