There is severe hum or noise.

•A TV or VCR is placed too close to the stereo system. Move the stereo system away from the TV or VCR.

The sound from the connected source is distorted.

•If “VIDEO” appears in the display when you press FUNCTION, switch the display to “MD” (see “Notes: Connecting a VCR”).

The timer does not function.

• Set the clock correctly.

DAILY1, DAILY 2, and REC do not appear when you press the TIMER SELECT button.

•Set the timer correctly.

•Set the clock.

The remote does not function.

•There is an obstacle between the remote and the system.

•The remote is not pointing in the direction of the system’s sensor.

•The batteries have run down. Replace the batteries.

There is acoustic feedback.

•Decrease the volume level.

•Move the microphone away form 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 colour irregularity still persists, place the speakers away from the TV set.

Speakers

Sound comes from one channel or unbalanced left and right volume.

•Check the speaker connection and speaker placement.

The sound comes from the center speaker only.

•The source being played back is monaural. Press PRO LOGIC and turn off the Pro Logic mode.

There is no sound from the center speaker.

•Set the CENTER LEVEL to the appropriate level.

There is no sound from the rear speakers.

•Set the REAR LEVEL to the appropriate level.

•The software being played back has limited sound effects. Check the volume with the test tone.

CD Player

The CD tray does not close.

•The CD is not placed properly.

The CD will not play.

•The CD is not lying flat in the disc tray. •The CD is dirty.

•The CD is inserted label side down. •Moisture condensation has built up.

Remove the CD and leave the system turned on for about an hour until the moisture evaporates.

Play does not start from the first track.

•The player is in program or shuffle mode. Press PLAY MODE repeatedly until “PROGRAM” or “SHUFFLE” disappear.

“OVER” is displayed.

•You have reached the end of the CD. Press and hold 0 to return.

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Sony MHC-D90AV, MHC-GR10AV operating instructions Speakers, CD Player
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MHC-D90AV, MHC-GR10AV specifications

The Sony MHC-GR10AV and MHC-D90AV are two impressive audio systems designed to deliver a high-quality sound experience for music enthusiasts and casual listeners alike. Featuring innovative technologies and a range of features, these systems cater to diverse audio needs, making them suitable for a variety of settings, from home entertainment to parties.

The Sony MHC-GR10AV stands out with its powerful sound output and rich bass performance, thanks to its dual 1000 watt high-power speakers. The system incorporates the Extra Bass technology which enhances low-frequency sounds, making it ideal for bass-heavy music genres like hip hop and electronic dance music. With Bluetooth connectivity, users can easily stream music from their smartphones or tablets, offering a seamless listening experience without the hassle of wires.

Moreover, the MHC-GR10AV features a built-in CD player and FM radio, ensuring that users have multiple options for playback. The intuitive interface offers easy navigation through a user-friendly display. Additionally, the system supports USB playback, allowing users to connect external drives and enjoy their favorite tracks directly. The DJ effects feature allows users to remix and enhance their music, providing an engaging experience for both performers and listeners.

On the other hand, the Sony MHC-D90AV offers its own unique set of features. Like the GR10AV, it boasts a powerful output and quality sound reproduction. This system is known for its surround sound capabilities which create an immersive audio experience, making it perfect for movie nights or gaming sessions. One of the standout technologies in the MHC-D90AV is the Digital Sound Enhancement Engine (DSEE), which restores compressed audio files, delivering a more dynamic sound.

Both models come with various connectivity options including RCA inputs, enabling users to connect additional devices such as gaming consoles or television sets. The included remote control makes it easy to navigate between sources and adjust settings from a distance.

In conclusion, both the Sony MHC-GR10AV and MHC-D90AV offer a robust set of features designed to elevate audio experiences. Their powerful output, connectivity options, and advanced technologies make them a worthwhile addition for anyone seeking high-quality sound reproduction in their home or event space. Whether through crisp high notes or deep bass lines, these systems provide an enjoyable listening experience for all.
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