SONY XM-404QX
Owner's Manual

TABLE OF CONTENTS 1. GENERAL
Location and Function of Controls .......................................... 3 Connections ............................................................................. 4

2. DISASSEMBLY
2-1. 2-2. 2-3. 2-4. 2-5. Bottom Plate ........................................................................ 6 Panel (A) ............................................................................. 6 Panel (B) .............................................................................. 7 AMP Board ......................................................................... 7 Control Panel Block ............................................................ 8

3. DIAGRAMS
3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. Block Diagram .................................................................... 9 Printed Wiring Board �AMP Section� .............................. 13 Schematic Diagram �AMP Section� ................................ 15 Schematic Diagram �EQ Section� .................................... 17 Printed Wiring Board �EQ Section� ................................. 17 Schematic Diagram �IND Section� .................................. 19 Printed Wiring Board �IND Section� ............................... 20 Schematic Diagram �LED Section� ................................. 21 Printed Wiring Board �LED Section� ............................... 21

4. EXPLODED VIEWS
4-1. Heat Sink Section .............................................................. 22 4-2. Control Panel Section ........................................................ 23

5. ELECTRICAL PARTS LIST ........................................ 24

Notes on Chip Component Replacement � Never reuse a disconnected chip component. � Notice that the minus side of a tantalum capacitor may be damaged by heat.

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