Sony nw e 305 e307 portable ic audio player

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2 NW-E305/E307 TABLE OF CONTENTS 1. GENERAL ................................................................... 4 2. DISASSEMBLY 2-1. Disassembly Flow ........................................................... 5 2-2. Window, Case (Upper), USB Lid .................................... 6 2-3. Case (Lower) ................................................................... 6 2-4. MAIN Board .................................................................... 7 2-5. HEADPHONE Board ...................................................... 8 2-6. SWITCH FLEXIBLE Board, Organic EL Indicator Module ......................................... 8 2-7. Lithium Battery ............................................................... 9 2-8. Release Plate .................................................................... 9 2-9. Spring (Lock) And Lock Spring (Out) ............................ 10 2-10. USB Guide Assy .............................................................. 11 2-11. Spring (Arm A) And Spring (Arm B) .............................. 12 2-12. Chassis Assy .................................................................... 12 2-13. USB Board ...................................................................... 13 3. TEST MODE ............................................................... 14 4. DIAGRAMS 4-1. Block Diagram ................................................................ 16 4-2. Printed Wiring Board -“ MAIN Board (Side A) -“ ........... 17 4-3. Printed Wiring Board -“ MAIN Board (Side B) -“ ........... 18 4-4. Schematic Diagram -“ MAIN Board (1/4) -“ ................... 19 4-5. Schematic Diagram -“ MAIN Board (2/4) -“ ................... 20 4-6. Schematic Diagram -“ MAIN Board (3/4), USB Board, HEADPHONE Board -“ ................................................... 21 4-7. Schematic Diagram -“ MAIN Board (4/4) -“ ................... 22 4-8. Printed Wiring Boards -“ HEADPHONE Board, USB Board -“ ................................................................... 23 5. EXPLODED VIEWS 5-1. Overall Section-1 ............................................................. 31 5-2. Overall Section-2 ............................................................. 32 5-3. Chassis Section ................................................................ 33 6. ELECTRICAL PARTS LIST .................................. 34Microsoft, Windows and Windows Media are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. US and foreign patents licensed from Dolby Laboratories. All other trademarks and registered trademarks are trademarks or registered trademarks of their respective holders. Charging the Battery -Charge the battery in an ambient temperature of between 5 to 35 °C (67 to 95 °F) 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 viscou-s (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. 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 damaged by heat. CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.

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3 NW-E305/E307 SERVICING NOTE A model both old and new exists in NW-E305/E307. For the old model, it is exchanged for the whole of main body. Moreover, please refer to this manual (9-879-876-0[]) about accessories. Please refer to this manual for the new model. How to distinguish 1. The most remarkable difference between the new model and the old model is near button (DIRECTION JOG) as showing in the photograph below. Old Model New Model 2. It is possible to confirm also with serial No. for the new model and the old model and so refer to the table below. The position of a serial No. Flexible wireFlexible guard 1.3 ± 0.1 1.3 ± 0.1 Serial No. for NW-E305/E307 Serial No. Model Name Old Model New Model NW-E305 5000001-5017490 5017452-5017571 5017491-5026000 5026001-5029625 5030126-5030625 5030626-5047505 5047506-5053460 5053461-5053505 5053506-5055440 Since 5055441 NW-E307 5000751-5001720 5001721-5001750 5001751-5003480 5003481-5006000 5006001-5006700 Since 5006701 Serial Number 3.The position that USB FLEXIBLE WIRE is set in USB FLEXIBLE GUARD is different in the new model and the old model. As for the new model, it is out of the hole match of USB FLEXIBLE GUARD by 1 mm to the right by the figure below. Model WHITE BLUE PINK BLACK NW-E305 USaa- Canadianaaaa AEP - - -a Koreanaaaa HongKongaaaa Taiwanaa- Mexicanaaaa Tourista-a- Chineseaaaa NW-E307 USa-aa Canadianaaaa Koreanaaaa HongKongaaaa Mexicanaaaa Touristaa- Chineseaaaa Color Variation Show the color variation for NW-E305/E307. Ve r. 1.3