Alpine CDA-9857 Battery Replacement, 27-EN, Opening the battery cover, Replacing the battery

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Battery Replacement

Applicable battery: Use two “AAA” sized dry batteries or equivalent.

1Opening the battery cover

Slide out the battery cover while firmly pressing in the direction of the arrow.

2Replacing the battery

Insert the batteries, observing the polarities as illustrated.

3Closing the cover

Slide the cover as illustrated until a click is heard.

Controllable With Remote Control

Point the remote control transmitter at the remote control sensor.

Remote control sensor

Connectable to Remote Control Interface Box

This unit may be controlled from the vehicle’s audio controls. An optional Alpine Remote Control Interface Box must be used. For details, contact your Alpine dealer.

27-EN

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Contents CDA-9857 CHM-S630 CHA-S634 CHA-1214 Alpine CD Changers Give You MoreContents Operating Instructions Installation and Connections Operating Instructions Never Attempt the Following On handling Compact Discs CD/CD-R/CD-RW Getting Started Turning Power On and OffPress SOURCE/POWER to turn on the unit Lowering Volume Quickly Adjusting VolumeSetting the Time and Calendar Initial System Start-UpAutomatic Memory of Station Presets Manual Storing of Station PresetsTuning to Preset Stations RadioPlayback Switching the HD Radio signalFrequency Search Function Repeat Play Press 5 in the play or pause modeX. Random Play 10-ENFile/Folder Name Search Concerning MP3/WMA Searching from CD TextQuick Search About MP3/WMA12-EN TerminologyLeft and Right/Fader Between Front Rear/Defeat Sound SettingSetting the Bass Control Setting the BBE Mode Setting the Treble ControlSetting the Treble Center Frequency Setting the Treble LevelDisplaying the Text Other Functions15-EN Press Title16-EN Displaying Time17-EN General SettingAudio Setting Tuner SettingDisplay Setting Demo SettingReceiving Channels with the SAT Radio Receiver Optional SAT Radio Receiver OptionalChecking the SAT Radio ID Number 19-ENStoring Channel Presets Setting the Tuning MethodReceiving Stored Channels Category/Channel Search FunctionReceiving Weather or Traffic information from SAT Radio Setting the Auxiliary Data Field DisplayChanging the Display 21-ENSearching for a desired Song IPod OptionalSearching by Playlist Searching by artist nameSelect Playlist/Artist/Album Direct Search FunctionSearching by album name Searching by song name24-EN Random Play Shuffle M.I.XPlaying MP3 Files with the CD Changer Optional Changer OptionalControlling CD Changer Optional Multi-Changer Selection Optional26-EN Remote ControlControls on Remote Control Opening the battery cover Battery ReplacementReplacing the battery 27-ENCase of Difficulty Information29-EN Indication for SAT Receiver ModeIndication for CD Changer 30-EN SpecificationsIndication for iPod Mode 31-EN Installation and ConnectionsAccessory List InstallationInstall the detachable front panel 32-ENPull the unit out, keeping it unlocked as you do so 33-ENRemoval 34-EN Connections35-EN 36-EN Page

CDA-9857 specifications

The Alpine CDA-9857 is a versatile single DIN car stereo that combines advanced sound quality with user-friendly features, making it a popular choice among car audio enthusiasts. Launched in the mid-2000s, it reflects Alpine's commitment to innovation, providing drivers with an exceptional listening experience. The CDA-9857 stands out due to its extensive sound tuning capabilities, allowing users to customize audio settings to suit their preferences.

One of the key features of the CDA-9857 is its 24-bit DAC (Digital-to-Analog Converter), which enhances sound clarity and detail. This technology significantly improves audio playback quality, making music sound crisp and well-defined across all genres. Additionally, the stereo supports multiple audio formats, including MP3, WMA, and AAC, ensuring compatibility with various media sources.

The CDA-9857 is equipped with a built-in EQ, featuring customizable presets and a 3-band parametric EQ. This allows users to adjust the bass, midrange, and treble frequencies independently, tailoring the audio output to match the acoustics of their vehicle. Furthermore, the stereo includes Alpine's proprietary “Media Xchange” technology, which enables the connection of external devices, like iPods and USB drives, thus allowing easy access to vast music collections.

For those who prioritize connectivity, the CDA-9857 features AUX inputs, a front USB port, and is compatible with Bluetooth hands-free calling when paired with a Bluetooth adapter, ensuring safety and convenience while driving. The unit also includes a convenient remote control, allowing easy navigation of its numerous options without having to reach for the dial.

Visually, the CDA-9857 boasts an attractive design, featuring a vibrant blue illuminated display that enhances readability and complements most car interiors. Its ergonomic controls make it user-friendly, enabling quick adjustments while on the go.

Overall, the Alpine CDA-9857 stands out as a feature-rich unit with a robust set of technologies designed to enhance the car audio experience. With its exceptional sound quality, customizable features, and excellent connectivity options, the CDA-9857 remains a solid choice for anyone looking to improve their in-car entertainment system.