Page 1
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NW-E7/E10
Specifications ............................................................................... 1
1. SERVICING NOTES ....................................................... 3
2. GENERAL .......................................................................... 9
3. DISASSEMBLY
3-1. Case ............................................................................... 11
3-2. Battery, Nickel Hydrogen ............................................. 12
3-3. Main Board ................................................................... 12
4. DIAGRAMS
4-1. Block Diagrams ............................................................ 13
4-2. Printed Wiring Boards (Main Section) ......................... 14
4-3. Schematic Diagram (Main Section (1/2)) ..................... 15
4-4. Schematic Diagram (Main Section (2/2)) ..................... 16
5. EXPLODED VIEW
5-1. Main Section ................................................................. 19
5-2. Case Section .................................................................. 20
6. ELECTRICAL PARTS LIST ....................................... 21
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.
TABLE OF CONTENTS
- Replacement of TMS320DA150GGU120 (IC601) used in the set requires
a special tool.
z 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°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.
z USABLE FORMAT
Use ISO9660 Level 1 format.
Ver 1.1 2002.01
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NW-E7/E10
Ver 1.1 2002.01 SECTION 1
SERVICING NOTES
1-1. INTRODUCTION
This document describes the operation check for inspection (Test mode) and adjustment after board replacement for repair.
In performing these works, connect this set to the PC via a USB cable and use the following tool.
Tool List
1-2. BOARD REPAIR
1. In performing the work, the set should be in a complete state (all components assembled).
2. Install the OpenMG Jukebox and WMP7 Plug-in (CD-ROM) in the PC in advance.
3. Do not start up other applications in the PC.
4. This set has the Test mode, and various functions can be checked by using exclusive application (Service Tool) on the PC side.
5. Be sure to replace the MAIN board, if any part listed in Table 1-1 is faulty.
6. The data in Table 1-2 have been written to the MAIN board.
7. In repairing other than above parts, repair as usual.
Ref. No
1Tool name
Service tool 9140 (FD)Part code
J-2507-037-1Application
Board check (Test mode) and readjustment after board replacement
Board name
MAIN boardRef. No
IC601, IC602, IC603, IC901
Board name
MAIN boardStored date
Music date, Equalizer initial values, CODEC programs, and ID/IK codes
Table 1-1
Table 1-2
1-3. OPERATION CHECK FOR INSPECTION (TEST MODE) PRECAUTIONS
1. Be sure to remove the battery from this set. (The power is supplied via USB cable) Operating the set in the Test mode with the battery
loaded could clear necessary information.
2. If operation check was performed for inspection, execute Play Info Initialize in qd (see page 7) to return respective functions to
initial positions (see Table 1-5 on page 7). In such a case, record current position of each function before executing Play Info
Initialize in qd , if necessary.
