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There is acoustic feedback. • Reduce the volume. • For MHC-RG555, move the microphone away from the speakers or change the direction of the microphone. The color irregularity on a TV screen persists. • Turn off the TV set once, then turn it on after 15 to 30 minutes. If the color irregularity still persists, place the speakers farther away from the TV set. The sound from the connected source is distorted (MHC-RG555 only). • If “VIDEO” appears in the display when you press VIDEO/MD on the unit, switch the display to “MD” (see “Listening to audio from a connected component (MHC-RG555 only)” on page 30). CD/MP3 player The disc tray does not open and “LOCKED” appears. • Contact your Sony dealer or local authorized Sony service facility. The disc tray does not close. • Place the disc correctly. • Always close the tray by pressing Z on the unit. Trying to press the tray closed with your fingers may cause problems with the player. The disc does not eject. • You cannot eject the disc during CD Synchro Recording. Press x to cancel the CD Synchro Recording, then press Z on the unit to eject the disc. • Consult your nearest Sony dealer. Play does not start. • Open the disc tray and check whether a disc is loaded. • Wipe the disc clean (page 37). • Replace the disc. • Place the disc that this system can play (page 5). • Place the disc correctly. • Place the disc in the tray with the label side up. • Remove the disc and wipe away the moisture on the disc, then leave the system turned on for a few hours until the moisture evaporates. •Press N to start play. The sound skips. • Wipe the disc clean (page 37). • Replace the disc. • Try moving the system to a place without vibration (e.g., on top of a stable stand). • Try moving the speakers away from the system, or placing them on separate stands. When you listen to a track with bass sounds at high volume, the speaker vibration may cause the sound to skip. Play does not start from the first track. • Press PLAY MODE repeatedly until both “PGM” and “SHUF” disappear to return to Normal Play. MP3 audio track cannot be played back.* • Recording was not performed according to the ISO9660 level 1 or level 2 format or Joliet in the expansion format. • The MP3 audio track does not have the extension “.MP3”. • The data is not stored in MP3 format. • Discs containing files other than MPEG 1 Audio Layer-3 files cannot be played. MP3 audio tracks take longer to play back than others.* • After the system reads all tracks on the discs, playback may take more time than usual if: – the number of albums or tracks on the disc is very large. – the album and track organization structure is very complex. The album name, track title and ID3 tag do not appear correctly.* • Use a disc that conforms with ISO9660 level 1, level 2 or Joliet in the expansion format. • The disc ID3 tag is not ver. 1 nor ver. 2. * MHC-GX750/GX450/RG555/RG551S/RG444S/ RG441/RG333/RG222/RG221/RX550 only 34GB Tuner Severe hum or noise/stations cannot be received. (“TUNED” or “STEREO” flashes in the display.) • Set the proper band and frequency (page 15). • Connect the antenna properly (page 8). • Find a place and an orientation that provide good reception, then set up the antenna again. If you cannot obtain good reception, we recommend you connect a commercially available external antenna. • The supplied FM lead antenna receives signals along its entire length, so make sure you extend it fully. • Locate the antennas as far away from the speaker cords as possible. • Try turning off surrounding electrical equipment. A stereo FM program cannot be received in stereo. • Press FM MODE repeatedly until “STEREO” appears. Tape deck The tape does not record or play, or there is a decrease in sound level. • The heads are dirty. Clean them (page 38). • The record/playback heads are magnetized. Demagnetize them (page 38). The tape does not erase completely. • The record/playback heads are magnetized. Demagnetize them (page 38). There is excessive wow or flutter, or the sound drops out. • The capstans or pinch rollers are dirty. Clean them (page 38). Noise increases or the high frequencies are erased. • The record/playback heads are magnetized. Demagnetize them (page 38). The tape does not record. • No cassette is loaded. Load a cassette. • The tab has been removed from the cassette. Cover the broken tab with adhesive tape (page 38). • The tape has wound to the end. Transmitter (MHC-GX750 only) There is no sound. • Check the connection of the optional component. • Check that the optional component is turned on. • Turn up the volume on the connected optional component, if the transmitter is connected to the headphones jack. • Change the radio frequency using the CHANNEL selector on the transmitter, then press WIRELESS on the unit again. • If you connect the transmitter to the analog out jacks of an audio reproducer, make sure that the NOISE FILTER switch is set to OFF. • Make sure that the NOISE FILTER switch is set to either ON or OFF (If...
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Stereo - MHC-RG555 (531.14 kb)