Sony MZ-NH1 GENERAL, CAUTION, TEST MODE, 6.DIAGRAMS, 3.DISASSEMBLY, SERVICING NOTES, 7.EXPLODED VIEWS, TABLE OF CONTENTS, ELECTRICAL ADJUSTMENT, ELECTRICAL PARTS LIST

MZ-NH1

	TABLE OF CONTENTS
1.	SERVICING NOTES ...............................................	4
2.	GENERAL ...................................................................	5

3.DISASSEMBLY

3-1.	Disassembly Flow ...........................................................	7
3-2.	Bottom Panel Sub Assy ...................................................	7
3-3.	MAIN Board ....................................................................	8
3-4.	Upper Panel Sub Assy .....................................................	8
3-5.	Control Ornament Block .................................................	9
3-6.	Mechanism Deck Assy (MT-MZNH1-181) ....................	9
3-7.	Gear (SA), Gear (SB) ......................................................	10
3-8.	Op Service Assy ..............................................................	10
3-9.	DC SSM18D/C-NP Motor (Spindle) (M701),
	DC SSM21A/C-NP Motor (Sled) (M702),
	DC Motor Unit (Over Write Head Up/Down) (M703) ...	11
3-10.	Holder Assy .....................................................................	11
4.	TEST MODE ...............................................................	12
5.	ELECTRICAL ADJUSTMENT .............................	16

6.DIAGRAMS

6-1.	Block Diagram –MD SERVO Section – .........................	21
6-2.	Block Diagram –AUDIO Section – .................................	22
6-3.	Block Diagram –POWER SUPPLY Section – ................	23
6-4.	Schematic Diagram –MAIN Section (1/9) – ...................	25
6-5.	Schematic Diagram –MAIN Section (2/9) – ...................	26
6-6.	Schematic Diagram –MAIN Section (3/9) – ...................	27
6-7.	Schematic Diagram –MAIN Section (4/9) – ...................	28
6-8.	Schematic Diagram –MAIN Section (5/9) – ...................	29
6-9.	Schematic Diagram –MAIN Section (6/9) – ...................	30
6-10.	Schematic Diagram –MAIN Section (7/9) – ...................	31
6-11.	Schematic Diagram –MAIN Section (8/9) – ...................	32
6-12.	Schematic Diagram –MAIN Section (9/9) – ...................	33
6-13.	Printed Wiring Board –MAIN Section (1/2) – ................	34
6-14.	Printed Wiring Board –MAIN Section (2/2) – ................	35

7.EXPLODED VIEWS

7-1.	PANEL SECTION ...........................................................	49
7-2.	MAIN SECTION ............................................................	50
7-3.	MECHANISM DECK SECTION ...................................	51
8.	ELECTRICAL PARTS LIST ................................	52

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

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.

Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270 ˚C during repairing.

•Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

•Be careful not to apply force on the conductor when soldering or unsoldering.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN

THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.