MZ-NH700/NHF800
3
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
4
2.
GENERAL
Location of Controls ........................................................
5
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
6
3-2.
Case (Lower) Section ......................................................
7
3-3.
MAIN Board ....................................................................
7
3-4.
Case (Upper) Section .......................................................
8
3-5.
Mechanism Deck Section (MT-MZNH900-181),
MD Standard Pin .............................................................
8
3-6.
Set Chassis Assy ..............................................................
9
3-7.
Gear (BSA), Gear (SB) ...................................................
9
3-8.
Op Service Assy .............................................................. 10
3-9.
DC Motor SSM18D/C-NP (Spindle) (M701),
DC Motor (Sled) (M702), DC Motor Unit
(Over Write Head Up/Down) (M703) ............................. 10
3-10. Holder Assy ..................................................................... 11
3-11. Position of Ferrite Core ................................................... 11
4.
TEST MODE
.............................................................. 12
5.
ELECTRICAL ADJUSTMENTS
......................... 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.
Case (Lower) Section ...................................................... 47
7-2.
Case (Upper) Section ....................................................... 48
7-3.
Chassis Section ................................................................ 49
7-4.
Mechanism Deck Section (MT-MZNH900-181) ............ 50
6.
ELECTRICAL PARTS LIST
................................ 51
Ver 1.1