Sony mdr nc 11 service manual
This is the 11 pages manual for sony mdr nc 11 service manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from sony mdr nc 11 service manual (Ocr-read)
Page 1
2 MDR-NC11 SECTION 1 GENERAL Installing a battery 1 Open the lid on the rear side of the battery box. 2 Insert one R03 (size AAA) battery by matching the + and – on the battery to the + and – in the battery box. 3 Close the lid. Battery life When to replace the battery Replace the battery with a new one when the POWER indicator dims. Battery Sony alkaline battery LR03/AM- 4 (N)Sony battery R03/UM-4 (NU) Approx. hours 40 hours 20 hours Selecting the earbuds The M size earbuds are attached to the headphones before shipment. If you feel the M size earbuds do not suit your ears, replace them with the supplied S or L size earbuds. Plug adaptor (supplied) When connecting to dual or stereo mini jacks of in-flight musicservices. PC-MP1HG (not supplied) When connecting to the remote control of a WALKMAN*, etc. To headphone jack on airplane seats When connecting to the headphone jack (stereo mini jack) of a WALKMAN*, etc. 2 Wear the headphones marked R in your right ear and the one marked L in your left ear. Push the earbud into your ear carefully so that the earbud fits the hole of your ear snugly. NoteUnless the headphones correctly fit your ears, noise canceling will not function. Adjust the earbuds position to sit on your ear comfortably, and push them into the inside of your ears so that they fit your ears snugly. 3 Turn on the power of the headphones. The power indicator lights in red. The power switch is located on the battery box. When power is turned on, ambient noise is reduced, and you can listen to music more clearly at a lower volume. 4 Turn on the power of the AV equipment. 5 Adjust the volume. Turn the VOL control. (If you turn down the volume, the sound does not mute completely.) 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 inflight 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. After listening to musicTurn off the power of the headphones. Notes-The noise canceling function is only effective for noise in the low frequency band. Although noise is reduced, it is not canceled completely. -Do not cover the microphone of the headphones with your hands. The noise canceling function may not work properly. -The noise canceling function may not work properly unless the headphones are put on firmly. -You can use the headphones even without turning on the power. In this case, the noise canceling function is not active, and the headphones operate as passive headphones. -After you turn on the power of the headphones, you may hear a slight hiss. This is the operating sound of the noise canceling function, not a malfunction. -In a quiet place, or depending on certain noises, you may feel that the noise canceling function is not effective, or that noise is accentuated. In this case, turn off the power of the headphone. -Interference noise can occur from nearby cellular phones. Should this occur, locate the headphones further away from the cellular phone(s). Using the clip You can fasten the battery box by its clip on a shirt pocket. When carrying the headphonesYou can attach the headphones to the supplied holder to keep them together. The headphones and the battery box can also be separately stored in the partitioned carrying case (supplied). While using the headphones, you can attach the holder to the headphone cord. Clip Precautions -Clean the headphones with a soft dry cloth. -Do not leave the jackplug dirty otherwise the sound may be distorted. -Be sure to bring the headphones to the Sony dealer when requiring a change of earbuds or repair work. -The CE mark on the unit is valid only for products marketed in the European Union. -Do not leave the headphones in a location subject to direct sunlight, heat or moisture. -Do not subject the headphones to excessive shock. -Handle the driver units carefully. -To clean the earbuds, first remove them from the headphones, and then clean them with water and mild detergent. After cleaning, dry each earbud carefully before use. -The earbuds will need to be replaced from time to time. If they are worn out by daily use or longtime storage, replace them with new ones. -If you fell drowsy or sick while using these headphones, stop use immediately. Notes on headphones Preventing hearing damage Avoid using headphones at high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. Do not use headphones while driving and cycling, etc. As headphones reduce outside sounds, they may cause a traffic accident. Also, avoid listening with your headphones in situations where hearing must not be impaired, for example, a railroad crossing, a construction site, etc. Holder Holder Insert the # end first. POWER ON OFF Microphone L R L VOL V O L dual jacksstereo mini jacks * WALKMAN is a registered trademark of Sony Corporation. Listening to music 1 Connect the headphones to the AV equipment. Features -Noise canceling 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 canceling circuit, and reduced. -Ultra compact earphones with 9mm driver unit fits comfortably in the ear and closed type earphone structure delivers deep bass sound. -Soft silicon rubber earbuds are used for stable and comfortable fit in the ears. -Volume control function for easy connecting to your portable audio player. -New earphone holder minimizes cord tangles during strage. -Operates as passive headphones when noise canceling circuit is not activated. -Plug adaptor is supplied to connect directly to stereo or dual jack of inflight music services. This section is extracted from instruction manual.
Page 2
3 MDR-NC11 SECTION 2 ELECTRICAL ADJUSTMENT NOISE CANCEL VOLUME ADJUSTMENT Connection: Procedure: 1. Generate a sine wave of specific frequency (250 Hz) from a AF oscillator, and output it from a speaker placed at the for- ward position. 2. Mount this set on the head, and turn on the [POWER] switch. 3. With this set mounted, adjust the RV1 (L-ch) and RV51 (R- ch) so that the volume from the speaker becomes lowest au- rally. Note: When the headphones are not covered with the ear pieces completely, the adjustment may not be performed correctly. Make sure that the ear pieces cover the headphone completely. Adjustment Location: – MAIN BOARD (Component Side) – + –amplifierspeaker AF oscillator NOISE CANCEL RV51 (R-ch) VOLUME ADJUSTMENT RV1 (L-ch) S101[POWER]OFF t ON