Sony MDS-NT1 service manual

Contents

Main SERVICE MANUAL MINIDISC DECK AEP Model UK Model E Model SPECIFICATIONS MDS-NT1 SELF-DIAGNOSIS FUNCTION Page Page Page Page SECTION 1 SERVICING NOTES (Figure A) JIG FOR CHECKING BD BOARD WAVEFORM Page CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS IN MD Page MDS-NT1 SECTION 2 GENERAL instruction manual. towards the deck 1N/> button 2MD insertion slot SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. CASE (UPPER) 3-3. MAIN BOARD 3-4. MD MECHANISM DECK (MDM-7S2B) 3-5. FRONT PANEL SECTION 3-6. BD BOARD, OVER WRITE HEAD (HR901) 3-7. HOLDER ASSY 3-8. LOADING MOTOR ASSY (M103) 3-9. SLED MOTOR ASSY (M102) 3-10. OPTICAL PICK-UP (KMS-262E) Page SECTION 4 TEST MODE 4-5. SELECTING THE TEST MODE Page Page MDS-NT1 SECTION 5 ELECTRICAL ADJUSTMENTS 5-1. PARTS REPLACEMENT AND ADJUSTMENT Adjustment flow Page 5-5. PRECAUTIONS FOR ADJUSTMENTS 5-7. CHECKS PRIOR TO REPAIRS 5-6. USING THE CONTINUOUSL Y RECORDED DISC [JOG DOWN] Page Page Page Page Page Adjustment and Checking Loacation: MDS-NT1 SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAM SERVO Section M B C 6-2. BLOCK DIAGRAM MAIN Section A S. RESET KEY0 KEY1 6-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS 88 ns 4.5 Vp-p 22.7 ns Waveforms BD Board A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D E F G H I TP209 VM34 PSB (1/2) FLEXIBLE BOARD 6-6. SCHEMATIC DIAGRAM BD Board (2/2) See page 38 for Waveforms. (2/2) (Page 40) IC401 A IC501 B C Page (1/2) (Page 47) (Page 45) (2/2) PANEL BOARD KA (CONDUCTOR SIDE) (COMPONENT SIDE) A B C D 1 2 3 4 5 6 D731, 751 Semiconductor Location 6-11. PRINTED WIRING BOARD PANEL Board 6-12. SCHEMATIC DIAGRAM PANEL Board IC Block Diagrams BD Board IC101 CXA2523AR IC401 BH6519FS-E2 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 IC420 M62016FP-E1 VCC PSB IC505 CXD9627A-E2 IC451 XC6351A120MR 0dB + 3 6-13. IC PIN FUNCTION DESCRIPTION Page Page Page Page Page Page Page SECTION 7 EXPLODED VIEWS Page Page Page Page MDS-NT1 SECTION 8 ELECTRICAL PARTS LISTBD BD BD MAIN MAIN MAIN PANEL