Sony MDX-C8970 free download

File name sony_MDX-C8970_service_manual.pdf

MDX-C8970 US Model SERVICE MANUAL SUPPLEMENT-1 File this supplement with the service manual. Subject: Main/Display/Relay Boards Modification (ECN-CSB00896) CONTENTS 1. 2. DISCRIMINATION ... 2 DIAGRAMS 3 5 6 7 8 9 10 11 12 13 14 15 2-1. Note for Printed Wiring Boards and Schematic Diagrams ... 2-2. Schematic Diagram ­ MAIN Board (1/5) ­ ... 2-3. Schematic Diagram ­ MAIN Board (2/5) ­ ... 2-4. Schematic Diagram ­ MAIN Board (3/5) ­ ... 2-5. Schematic Diagram ­ MAIN Board (4/5) ­ ... 2-6. Schematic Diagram ­ MAIN Board (5/5) ­ ... 2-7. Printed Wiring Board ­ MAIN Board (Component Side) ­ ... 2-8. Printed Wiring Board ­ MAIN Board (Conductor Side) ­ ... 2-9. Printed Wiring Board ­ DISPLAY Board ­ ... 2-10. Schematic Diagram ­ DISPLAY Board ­ ... 2-11. Printed Wiring Board ­ RELAY Board ­ ... 2-12. Schematic Diagram ­ RELAY Board ­ ... 3. ELECTRICAL PARTS LIST ... 16 1. DISCRIMINATION ­ MAIN BOARD (Component Side) ­ Former :1-674-589-11 New :1-674-589-12 ­ DISPLAY BOARD (Conductor Side) ­ Former :1-674-590-11 New :1-674-590-12 ­ RELAY BOARD (Component Side) ­ Former :1-674-591-11 New :1-674-591-12 2 2. DIAGRAMS 2-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS (In addition to this, the necessary note is printed in each block) Note on Printed Wiring Boards: · X : parts extracted from the component side. · Y : parts extracted from the conductor side. f : internal component. · · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated. Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. f · : internal component. · C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. · U : B+ Line. · Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Circled numbers refer to waveforms. · Signal path. F : FM f : AM E : MD 3 4 MDX-C8970 2-2. SCHEMATIC DIAGRAM ­ MAIN Board (1/5) ­ (Page 6) (Page 9) (Page 8) (Page 7) 5