MZ-NH900
3
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
4
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
7
3-2.
Case (Lower) Block .........................................................
8
3-3.
MAIN Board ....................................................................
8
3-4.
Upper Panel Block ...........................................................
9
3-5.
Mechanism Deck (MT-MZNH900-181) .........................
9
3-6.
Battery Case Block .......................................................... 10
3-7.
Gear (BSA), Gear (SB) ................................................... 10
3-8.
OP Service Assy .............................................................. 11
3-9.
DC Motor SSM18D/C-NP (Spindle) (M701),
DC Motor (Sled) (M702),
DC Motor Unit (Over Write Head Up/Down) (M703) ... 11
3-10. Holder Assy ..................................................................... 12
3-11. Position of Ferrite Core ................................................... 12
4.
TEST MODE
.............................................................. 13
5.
ELECTRICAL ADJUSTMENTS
......................... 17
6.
DIAGRAMS
6-1.
Block Diagram –MD SERVO Section – ......................... 23
6-2.
Block Diagram –AUDIO Section – ................................. 24
6-3.
Block Diagram –POWER SUPPLY Section – ................ 25
6-4.
Schematic Diagram –MAIN Section (1/9) – ................... 27
6-5.
Schematic Diagram –MAIN Section (2/9) – ................... 28
6-6.
Schematic Diagram –MAIN Section (3/9) – ................... 29
6-7.
Schematic Diagram –MAIN Section (4/9) – ................... 30
6-8.
Schematic Diagram –MAIN Section (5/9) – ................... 31
6-9.
Schematic Diagram –MAIN Section (6/9) – ................... 32
6-10. Schematic Diagram –MAIN Section (7/9) – ................... 33
6-11. Schematic Diagram –MAIN Section (8/9) – ................... 34
6-12. Schematic Diagram –MAIN Section (9/9) – ................... 35
6-13. Printed Wiring Board –MAIN Section (1/2) – ................ 36
6-14. Printed Wiring Board –MAIN Section (2/2) – ................ 37
7.
EXPLODED VIEWS
7-1.
Case Section .................................................................... 49
7-2.
Upper Panel Section ........................................................ 50
7-3.
Chassis Section ................................................................ 51
7-4.
Mechanism Deck Section (MT-MZNH900-181) ............ 52
6.
ELECTRICAL PARTS LIST
................................ 53
Summary of Contents for Walkman MZ-MH900
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