Sony Network Walkman NW-HD3, Service Manual

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2
NW-HD3
TABLE OF CONTENTS
1. SERVICING NOTES
............................................... 3
2. GENERAL
................................................................... 4
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 5
3-2. Cabinet (Lower) Assy ...................................................... 5
3-3. Cabinet (Middle) Assy ..................................................... 6
3-4. Battery Block Sub Assy ................................................... 6
3-5. LCD Block Sub Assy, MAIN Board ............................... 7
3-6. HDD Unit ........................................................................ 8
3-7. Position of Ferrite Core ................................................... 8
4. TEST MODE
.............................................................. 9
5. DIAGRAMS
5-1. Block Diagram – MAIN Section (1/2) – ......................... 18
5-2. Block Diagram – MAIN Section (2/2) – ......................... 19
5-3. Block Diagram – KEY/POWER SUPPLY Section – ...... 20
5-4. Printed Wiring Board – MAIN Section (1/2) – ............... 22
5-5. Printed Wiring Board – MAIN Section (2/2) – ............... 23
5-6. Schematic Diagram – MAIN Section (1/7) – .................. 24
5-7. Schematic Diagram – MAIN Section (2/7) – .................. 25
5-8. Schematic Diagram – MAIN Section (3/7) – .................. 26
5-9. Schematic Diagram – MAIN Section (4/7) – .................. 27
5-10. Schematic Diagram – MAIN Section (5/7) – .................. 28
5-11. Schematic Diagram – MAIN Section (6/7) – .................. 29
5-12. Schematic Diagram – MAIN Section (7/7) – .................. 30
5-13. Printed Wiring Board – HDD Section – .......................... 31
5-14. Schematic Diagram – HDD Section – ............................. 32
6. EXPLODED VIEW
................................................... 45
7. ELECTRICAL PARTS LIST
................................ 47
Notes on chip component replacement
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be
damaged by heat.
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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
Notes on the AC power adaptor
•
Use only the AC power adaptor and the
USB adaptor supplied with the player. Do
not use any other AC power adaptor since
this may cause the player to malfunction.
•
The player is not disconnected from the
AC power source (mains) as long as it is
connected to the wall outlet, even if the
player itself has been turned off.
•
If you are not going to use the player for a
long time, be sure to disconnect the power
supply. To remove the AC power adaptor
from the wall outlet, grasp the adaptor plug
itself; never pull the cord.