Information

In Case of Difficulty

If you encounter a problem, please review the items in the following checklist. This guide will help you isolate the problem if the unit is at fault. Otherwise, make sure the rest of your system is properly connected or consult your authorized Alpine dealer.

Basic

No function or display.

•Vehicle's ignition is off.

-If connected following instructions, the unit will not operate with the vehicle's ignition off.

•Improper power lead connections.

-Check power lead connections.

•Blown fuse.

-Check the fuse on the battery lead of the unit; replace with the proper value if necessary.

•Internal micro-computer malfunctioned due to interference noise etc.

-Press the Reset switch with a ballpoint pen or other pointed article.

Radio

Unable to receive stations.

•No antenna or open connection in cable.

-Make sure the antenna is properly connected; replace the antenna or cable if necessary.

Unable to tune stations in the seek mode.

•You are in a weak signal area.

-Make sure the tuner is in the DX mode.

•If the area you are in is a primary signal area, the antenna may not be grounded and connected properly.

-Check your antenna connections; make sure the antenna is properly grounded at its mounting location.

•The antenna may not be the proper length.

-Make sure the antenna is fully extended; if broken,

replace the antenna with a new one.

Broadcast is noisy.

•The antenna is not the proper length.

-Extend the antenna fully; replace it if it is broken.

•The antenna is poorly grounded.

-Make sure the antenna is grounded properly at its mounting location.

CD

CD Player/Changer not functioning.

•Out of operating temperature range +50˚C (+120˚F) for CD.

-Allow the vehicle's interior (or trunk) temperature to cool.

CD playback sound is wavering.

•Moisture condensation in the CD Module.

-Allow enough time for the condensation to evaporate

(about 1 hour).

CD insertion not possible.

•A CD is already in the CD player.

-Eject the CD and remove it.

•The CD is being improperly inserted.

-Make sure the CD is being inserted following

instructions in the CD Player Operation section.

Unable to fast forward or backward the CD.

•The CD has been damaged.

-Eject the CD and discard it; using a damaged CD in

your unit can cause damage to the mechanism.

CD playback sound skips due to vibration.

•Improper mounting of the unit.

-Securely re-mount the unit.

•Disc is very dirty.

-Clean the disc.

•Disc has scratches.

-Change the disc.

•The pick-up lens is dirty.

-Do not use a commercial abailable lens cleaner disc. Consult your nearest ALPINE dealer.

CD playback sound skips without vibration.

•Dirty or scratched disc.

-Clean the disc; damaged disc should be replaced.

Error displays (built-in CD player only)

•Mechanical error

-Press the c button. After the error indication disappears, insert the disc again. If the above- mentioned solution does not solve the problem, consult your nearest ALPINE dealer.

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Alpine CDM-7871 owner manual Information, Case of Difficulty
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CDM-7871 specifications

The Alpine CDM-7871 is a car audio receiver that has gained a reputation for its impressive sound quality and innovative features. This CD receiver is crafted to cater to the demanding needs of audiophiles and everyday listeners alike, making it a popular choice among car enthusiasts who seek a premium listening experience on the road.

One of the standout features of the CDM-7871 is its high-power amplification system, which delivers a clean and robust output. With a peak power of 50 watts per channel, it significantly enhances the audio experience by allowing users to enjoy their favorite music at high volumes without distortion. This feature pairs well with the receiver's compatibility with multiple audio formats, including CDs, MP3, WMA, and AAC, ensuring versatility in playback options.

The CDM-7871 also boasts a user-friendly interface, highlighted by a bright and easily readable display. The receiver includes customizable RGB illumination, allowing users to match the unit's lighting to their vehicle's interior. The ergonomic controls and intuitive layout make navigating through various functions seamless, whether it's adjusting volume, changing tracks, or switching between sources.

In terms of connectivity, the CDM-7871 supports Bluetooth technology for hands-free calling and wireless audio streaming. This allows users to connect their smartphones effortlessly, making calls and enjoying music without the hassle of cables. Additionally, the USB input offers direct access to music stored on compatible devices, ensuring quick and easy playback.

Another defining characteristic of the CDM-7871 is its capability for sound customization. The built-in equalizer allows users to tweak audio settings, enabling them to enhance bass, treble, and midrange frequencies according to their personal preferences. Furthermore, the inclusion of high-pass and low-pass filters helps improve sound clarity and maintain optimal performance for individual speakers and subwoofers.

Moreover, the Alpine CDM-7871 is equipped with a robust radio tuner, providing access to AM, FM, and even HD Radio stations. The digital tuner ensures more reliable reception with enhanced sound quality and clarity, ensuring that users can enjoy their favorite radio stations without interruptions.

Overall, the Alpine CDM-7871 stands out due to its combination of superior sound quality, user-friendly features, and versatile connectivity. Whether commuting or embarking on a road trip, this receiver enhances the in-car audio experience, making it a worthy investment for anyone looking to upgrade their vehicle's sound system.
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