Occasional care and maintenance of the unit and the software are needed to optimize the performance of your unit.

To clean the cabinet

Use a soft and dry cloth.

If the surfaces are extremely dirty, use a soft cloth lightly

moistened with mild detergent solution. Do not use strong solvents, such as alcohol, benzine or thinner as these could damage the finish of the unit.

To clean the heads and tape paths

After every 10 hours of use, clean the heads and tape paths with a head cleaning cassette or cotton swab moistened with cleaning fluid or denatured alcohol. (These cleaning kits are commercially available.)

When cleaning with a cotton swab, wipe the recording/playback head (deck 2 only), erasure head (deck 2 only), capstans, and pinchrollers.

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Erasure Recording/ Cotton swab

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After cleaning the heads and tape paths with a liquid head cleaning cassette or a moistened swab, wait until the cleaned parts are completely dry before inserting the tapes.

To demagnetize the heads

The heads may become magnetized after long-term use. This may narrow the output range of recorded tapes and increase noise. After 20 to 30 hours use, demagnetize the heads with any commercially available demagnetizer.

Care of discs

When a disc becomes dirty, wipe the disc from the center out

After playing a disc, store the disc in its case. Do not leave the disc in places that are hot or humid.

Care of tapes

Store tapes in their cases after use.

Do not leave tapes near magnets, motors, television sets, or any source of magnetism. This will downgrade the sound quality and cause noise.

Do not expose tapes to direct sunlight, or leave them in a car parked in direct sunlight.

If the unit fails to perform as described in these Operating Instructions, check the following guide.

GENERAL

There is no sound.

Is the AC cord connected properly?

Is there a bad connection? (+ page 4)

There may be a short circuit in the speaker terminals.

+Disconnect the AC cord, then correct the speaker connections.

Was an incorrect function button pressed?

Sound is emitted from one speaker only.

Is the other speaker disconnected?

An erroneous display or a malfunction occurs.

+Reset the unit as stated below.

TUNER SECTION

There is constant, wave-like static.

Is the antenna connected properly? (+ page 5) QIs the signal weak?

+Connect an outdoor antenna.

The reception contains noise interferences or the sound is distorted.

Is the system picking up external noise or multipath distortion?

+Change the orientation of the antenna.

+Move the unit away from other electrical appliances.

CASSETTE DECK SECTION

The tape does not run,

Is deck 2 in pause mode? (+ page 8)

The sound is off-balance or not adequately high.

Is the playback head dirty? (+ page 23)

Recording is not possible.

Is the erasure prevention tab on the tape broken off? (+ page 13)

Is the recording head dirty? (+ page 23)

Erasure is not possible.

Is the erasure head dirty? (+ page 23)

Is a metal tape being used?

High frequency sound is not emitted.

Is the recording/playback head dirty? (+ page 23)

CD PLAYER SECTION

The CD player does not play.

QIs the disc correctly placed? (+ page 11)

Is the disc dirty? (+ page 23)

Is the lens affected by condensation?

+ Wait approximately one hour and try again.

To reset

If an unusual condition occurs in the display window or the cassette decks, reset the unit as follows.

1 Press POWER to turn off the power.

2 Press POWER to turn the power back on while pressing

CLEAR. Everything stored in memory after purchase is canceled.

If the power cannot be turned off in step 1 because of a malfunction, reset by disconnecting the AC cord, and connect it again. Then carry out step 2.

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Sony NSX-MT320, SX-MT321 manual Tuner Section, Cassette Deck Section, CD Player Section

SX-MT321, NSX-MT320 specifications

The Sony SX-MT321 and NSX-MT320 are two advanced audio systems that showcase Sony's commitment to delivering high-quality sound and an immersive listening experience. Both models are designed for consumers seeking superior performance combined with modern design and user-friendly features.

The SX-MT321 is a compact stereo system that includes a CD player, FM/AM tuner, and USB connectivity, allowing users to explore various music sources. Its sleek design fits well in any home environment, while its adjustable equalizer ensures that listeners can customize their audio experience to suit their preferences. The system also supports MP3 playback, making it easier to enjoy digital music collections on CDs or USB drives.

On the other hand, the NSX-MT320 is designed with a more powerful amplifier and speaker system, providing an enhanced audio output for larger spaces. It features Bluetooth technology, enabling users to stream music wirelessly from their smartphones or tablets. This adds a layer of convenience and versatility, allowing users to enjoy their favorite tunes without the hassle of cords and cables.

Both models incorporate Sony's proprietary sound technologies. The SX-MT321 utilizes S-Master digital amplifier technology, which helps in delivering clear and dynamic sound reproduction. This technology enhances the audio quality of both digital and analog sources, bringing out the nuances and details in music recordings. The NSX-MT320 also includes multiple sound modes that can be adjusted according to the genre of music, delivering an optimized listening experience.

Connectivity is a strong point for both models. Aside from USB and Bluetooth options, they come equipped with auxiliary inputs and outputs for expanded compatibility with other devices, making them versatile audio centers for home entertainment. Additionally, the NSX-MT320 features a built-in subwoofer, enhancing low-frequency reproduction for a fuller bass response that many music enthusiasts appreciate.

In terms of user interface, both systems are designed with intuitive controls and clear displays, making operation seamless. The inclusion of remote control further simplifies navigation through various settings.

In summary, the Sony SX-MT321 and NSX-MT320 are exceptional audio systems that offer a blend of performance, features, and connectivity options. Whether you are looking for a compact and versatile stereo system or a powerful audio solution for larger spaces, these models provide an excellent listening experience suitable for various musical tastes and environments.