Sony mdr nc 50 service manual
This is the 22 pages manual for sony mdr nc 50 service manual.
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Extracted text from sony mdr nc 50 service manual (Ocr-read)
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2 MDR-NC50 TABLE OF CONTENTS 1. GENERAL ................................................................... 3 2. DISASSEMBLY 2-1. Disassembly Flow ........................................................... 4 2-2. ML Board ........................................................................\ 4 2-3. MR Board ........................................................................\ 5 2-4. Ornamental Cap (L)/(R) .................................................. 5 2-5. Position of lead Wires ...................................................... 6 2-6. L/R Transition Cord Location ......................................... 6 2-7. Position Of Lead Wires At Front Plate (L)/(R) Sub Assy ...................................... 7 3. ELECTRICAL ADJUSTMENT ............................. 8 4. DIAGRAMS ................................................................. 9 4-1. Block Diagram ................................................................ 11 4-2. Printed Wiring Board – L-CH Board – ........................... 12 4-3. Printed Wiring Boards – R-CH Board – .......................... 13 4-4. Schematic Diagram ......................................................... 14 5. EXPLODED VIEWS 5-1. Overall Section ................................................................ 15 5-2. Housing (L) Section ........................................................ 16 5-3. Housing (R) Section ........................................................ 17 6. ELECTRICAL PARTS LIST ................................ 18
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3 MDR-NC50 SECTION 1 GENERAL Features Installing a battery 1 Open the right housing, as illustrated. 2 Open the lid of the battery box of the headphone to insert one size AAA battery. 3 Close the lid. Match the e on the battery to the e in the battery case. L R Listening to music 1 Connect the headphones to the AV equipment. * WALKMAN is a registered trademark of Sony Corporation to represent Headphone Stereo products. 2 Turn on the power on the right side of the headphones. The POWER indicator lights in red. When the power is turned on, ambient noise is reduced, and you can listen to music more clearly at a lower volume. When connecting to the stereo mini jack of the remote controls jack supplied with a WALKMAN *, etc WALKMAN *, etc Remote controlConnecting cord 0.5 m (supplied) When connecting to the stereo mini plug of a WALKMAN *, etc Headphones L R ON OFF Connecting cord 1.5 m (supplied) Noise canceling microphone RL for dual jacks for stereo mini jacks 3 Put on the headphones so that the ear pads cover your ears. 4 Turn on the power of the AV equipment. Hearing environmental sound for safety. Playback is muted while the MONITOR switch is pushed so you can hear the surrounding environment. NoteThe environmental sound might not be heard if the microphone is covered with your fingers. Notes on using on the airplane - The supplied plug adaptor can be connected to dual and stereo mini jacks. - Do not use the headphones when use of electronic equipment is prohibited or when use of personal headphones for in-flight music services is prohibited. If you have any questions or problems concerning the system that are not covered in this manual, please consult the nearest Sony dealer. L R monitor microphone MONITOR switch (Except Tourist) (Tourist only) L R When connecting to the stereo mini jack of the remote controls jack supplied with a WALKMAN *, etc. Remote control When connecting to the stereo mini jack of a WALKMAN *, etc. Connecting cord 1.5 m (supplied) Headphones To headphone jack on airplane seats Plug adaptor (supplied) When connecting to dual or stereo mini jacks of in-flight music services. Note- Insert the plug in the jack until you hear a click. - To disconnect the cord, pull it out by the plug, not the cord, as the inner conductors may break. - Noise cancelling headphones reduce ambient noise, and provide a quieter environment to enhance audio entertainment. Ambient sound is synthesized with an anti- sound signal produced by the noise cancelling circuit, and reduced. (Over 14 dB is reduced at 300 Hz.) - Slim, folding design for easy portability. - Neodymium magnets for powerful sound. - Passive operation when noise-canceling circuit is not activated. - Built-in monitor function to hear surrounding sound without taking off the headphones. - Supplied plug adaptor for easy connectivity to stereo or dual jack of in-flight music services. This section is extracted from instruction manual. Ver. 1.1