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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
MDX-C8970
2-2. SCHEMATIC DIAGRAM MAIN Board (1/5)
(Page 6)
(Page 9) (Page 8) (Page 7)
5
5
Note on Schematic Diagram: · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM
MDX-C8970
2-3. SCHEMATIC DIAGRAM MAIN Board (2/5)
(Page 5)
(Page 7)
(Page 8) Note on Schematic Diagram: · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM
6
6
2-4. SCHEMATIC DIAGRAM MAIN Board (3/5)
MDX-C8970
(Page 5)
(Page 6) (Page 9)
(Page 8)
(Page 9) Note on Schematic Diagram: · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM ( ) : AM : MD PLAY
7
7
MDX-C8970
2-5. SCHEMATIC DIAGRAM MAIN Board (4/5)
(Page 6)
(Page 5)
(Page 7)
(Page 15)
8
8
Note on Schematic Diagram: · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM : MD PLAY
2-6. SCHEMATIC DIAGRAM MAIN Board (5/5)
MDX-C8970
(Page 7)
(Page 5)
9
9
Note on Schematic Diagram: · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM ( ) : AM : MD PLAY
MDX-C8970
2-10. SCHEMATIC DIAGRAM DISPLAY Board
(Page 15)
13
13
Note on Schematic Diagram: · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM
MDX-C8970
2-12. SCHEMATIC DIAGRAM RELAY Board
(Page 13)
(Page 8)
15