JVC A-M1 High Quality Service Manual

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1. Specifications

2. Technology of Digital Power Supply (for USA)

   1. Block Diagram

   2. Trigger Instant Start Circuit

   3. Inverter Circuit

3. Adjustment Procedures

   1. Digital Power Supply (for USA)

   2. Power Amplifier

4. Removal Procedures

   1. Cabinet

   2. Front Panel and Chassis

   3. Rear Panel

   4. Front Bracket

   5. Knobs

   6. Headphones & Speaker Switch (TSC – 121B) PC Board Ass'y

   7. Loudness Switch PC Board Ass'y

   8. Volume Bracket

   9. Power Switch

   10. Heatsink and Driver Amp. (TXX – 121B) PC Board Ass'y

   11. Equalizer Amp. (TXX – 163B) & Electronics Switch (TXX – 162B)

   12. Protector Circuit (TXX – 165 – 2) PC Board Ass'y

   13. Digital Power Supply (TDC – 31C) PC Board Ass'y (for USA)

   14. Fuse (F801) (for USA)

   15. Toroidal Transformer Power Supply (TXX – 203A) PC Board Ass'y

   16. Fuse (F801, F802, F803)

5. Main Parts Location

   1. Equipped with Digital Power Supply

   2. Equipped with Toroidal Transformer Power Supply

6. Exploded Views and Part Numbers

   1. Front Panel

   2. Power IC's

   3. Power Supply Section

   4. Rear Panel Section

7. Printed Circuit Board Ass'y and Parts List

   1. TDC – 31 Digital Power Supply PC Board Ass'y

   2. TDC – 32 Trigger Instant Start PC Board Ass'y

   3. TSC – 121 Headphones & Speaker Switch PC Board Ass'y

   4. TXX – 161 AC Outlets, Rectifiers & Terminals PC Board Ass'y

   5. TXX – 162 Electronic Switch & Pin Jacks PC Board Ass'y

   6. TXX – 163 Equalizer Amp. & Pin Jacks PC Board Ass'y

   7. TXX – 164 Tone Controls, LEDs & Muting Switch PC Board Ass'y

   8. TXX – 165 Driver Amp. & Protector Circuit PC Board Ass'y

   9. TXX – 166 Power IC's PC Board Ass'y

   10. TXX – 203A Voltage Selector, Rectifiers & Terminals PC Board Ass'y

8. Accessories List

9. A – M1 Schematic Diagram

10. Packing Materials and Part Numbers

11. Parts List with Specified Numbers for Designated Areas