Sony MZ-E90 service manual Table Of Contents

TABLE OF CONTENTS

1.	SERVICING NOTE	4
2.	GENERAL	5
	Playing an MD right away!	5
3.	DISASSEMBLY	7
3-1. Panel Assy, Upper		7
3-2. Holder Assy		7
3-3. Mechanism Deck		8
3-4. Main Board		8
3-5. Service Assy, OP		9
4.	TEST MODE	10
4-1. General		10
4-2. Setting the Test Mode		10
	4-2-1. How to Set the Test Mode	10
	4-2-2. Operations when the Test Mode is Set	10
	4-2-3. How to Release the Test Mode	10
4-3. Test Mode Structure		10
4-4. Manual Mode		11
	4-4-1. Outline of the Function	11
	4-4-2. How to Set the Manual Mode	11
4-5. Overall Adjustment Mode		11
	4-5-1. Outline of the Function	11
5.	ELECTRICAL ADJUSTMENTS	12
5-1. General		12
5-2. Notes for Adjustment		12
	5-2-1. Jigs	12
	5-2-2. Adjustment Sequence	12
	5-2-3. Power	12
5-3. Reset NV		12
	5-3-1. How to Reset NV	12
5-4. Overall Adjustment Mode		12
	5-4-1. Overall Adjustment Mode Structure	12
	5-4-2. Overall CD and MO Adjustment Method	12
	5-4-3. Overall CD and MO Adjustment Items	13

6.		DIAGRAMS		14
6-1. IC Pin Description				14
	6-1-1. IC801 RU6915MF-0006 (System Control)			14
6-2. Block Diagrams				17
	6-2-1. MD Block Diagram			17
	6-2-2. Servo, System Control Block Diagram			19
6-3.		Printed Wiring Boards and Schematic Diagrams		21
	6-3-1. Printed Wiring Board – Main Board –			21
	6-3-2.		Schematic Diagram – Main Board (1/4) –	25
	6-3-3.		Schematic Diagram – Main Board (2/4) –	27
	6-3-4.		Schematic Diagram – Main Board (3/4) –	29
	6-3-5.		Schematic Diagram – Main Board (4/4) –	31
6-4.		IC Block Diagrams		33
7.		EXPLODED VIEWS		37
7-1.		Main Unit Section		37
7-2.		Mechanism Deck Section		38
8.		ELECTRICAL PARTS LIST		39

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