Table Of Contents; Servicing Note - Sony NW-E7 Service Manual

NW-E7/E10

TABLE OF CONTENTS

Specifications ............................................................................... 1
1. SERVICING NOTE
.......................................................... 2
2. GENERAL
.......................................................................... 3
3. DISASSEMBLY
3-1. Case ................................................................................. 5
3-2. Battery, Nickel Hydrogen ............................................... 5
3-3. Main Board ..................................................................... 6
4. DIAGRAMS
4-1. Block Diagrams .............................................................. 7
4-2. Printed Wiring Boards (Main Section) ........................... 8
4-3. Schematic Diagram (Main Section (1/2)) ....................... 9
4-4. Schematic Diagram (Main Section (2/2)) ..................... 10
5. EXPLODED VIEW
5-1. Main Section ................................................................. 13
5-2. Case Section .................................................................. 14
6. ELECTRICAL PARTS LIST
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.
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.
• Replacement of TMS320DA150GGU120 (IC601) used in the set requires
a special tool.
2
....................................... 15
SECTION 1

SERVICING NOTE

UNLEADED SOLDER
z
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°C 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°C.
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.
USABLE FORMAT
z
Use ISO9660 Level 1 format.