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MZ-S1
TABLE OF CONTENTS
1. SERVICING NOTES
............................................... 4
2. GENERAL ................................................................... 6
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Case (Lower) Section ...................................................... 8
3-3. Buckle (Upper) Assy, Battery Case Lid ......................... 9
3-4. Case (Upper) Section ...................................................... 10
3-5. Mechanism Deck (MT-MZN707-177) ........................... 10
3-6. Set Chassis Assy ............................................................. 11
3-7. MAIN Board ................................................................... 11
3-8. OP Service Assy (LCX-5R) ............................................ 12
3-9. Holder Assy ..................................................................... 13
3-10. DC Motor (Sled) (M602) ................................................ 13
3-11. DC SSM18B Motor (Spindle) (M601),
DC Motor (Over Write Head Up/Down) (M603) .......... 14
3-12. Ornament (R), Switch Unit ............................................. 14
4. TEST MODE .............................................................. 15
5. ELECTRICAL ADJUSTMENTS ......................... 20
6. DIAGRAMS
6-1. Block Diagram - SERVO/USB Section -...................... 32
6-2. Block Diagram - AUDIO Section -............................... 33
6-3. Block Diagram - DISPLAY/KEY CONTROL/
POWER SUPPLY Section -........................................... 34
6-4. Note for Printed Wiring Board and
Schematic Diagrams ....................................................... 35
6-5. Printed Wiring Board
- MAIN Board (Component Side) -............................. 36
6-6. Printed Wiring Board
- MAIN Board (Conductor Side) -............................... 37
6-7. Schematic Diagram - MAIN Board (1/4) -.................. 38
6-8. Schematic Diagram - MAIN Board (2/4) -.................. 39
6-9. Schematic Diagram - MAIN Board (3/4) -.................. 40
6-10. Schematic Diagram - MAIN Board (4/4) -.................. 41
6-11. IC Pin Function Description ........................................... 48
7. EXPLODED VIEWS
7-1. Case (Upper) Section ...................................................... 55
7-2. Chassis Section ............................................................... 56
7-3. MAIN Board Section ...................................................... 57
7-4. Case (Lower) Section-1 .................................................. 58
7-5. Case (Lower) Section-2 .................................................. 59
7-6. Mechanism Deck Section-1 (MT-MZN707-177) ........... 60
7-7. Mechanism Deck Section-2 (MT-MZN707-177) ........... 61
8. ELECTRICAL PARTS LIST ............................... 62 CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Notes on chip component replacement
-Never reuse a disconnected chip component.
-Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
-Keep the temperature of the soldering iron around 270 ΛC dur-
ing 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.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
-Unleaded solder melts at a temperature about 40 ΛC higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ΛC .
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
-Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur
such as on IC pins, etc.
-Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
On power sources
-Use house current, LR6 (size AA) battery.
-For use in your house: Use the AC power
adaptor supplied with this recorder. Do not
use any other AC power adaptor since it may
cause the recorder to malfunction.
Polarity of the
plug
