Information

In Case of Difficulty

If you encounter a problem, please turn the power off, then on again. If the unit is still not functioning normally, 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 ball-point 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 available 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-9823, CDM-9821 owner manual Information, Case of Difficulty

CDM-9823, CDM-9821 specifications

The Alpine CDM-9823 and CDM-9821 are sophisticated car audio units that redefine the in-car listening experience, combining state-of-the-art technology with user-friendly features. Both models are a part of Alpine's commitment to high-quality sound and innovative design.

Starting with the Alpine CDM-9823, this model stands out due to its remarkable power and audio performance. It boasts an impressive 50 watts per channel peak power, driven by its high-efficiency amplifier. This means that even at high volumes, the sound remains clean and distortion-free, a characteristic highly sought after by audiophiles. One of its key features is the inclusion of a 24-bit DAC that ensures superior sound quality, allowing listeners to enjoy their favorite tracks with crystal clarity.

The CDM-9823 is equipped with a versatile media playback capability, supporting various formats including MP3 and WMA, which allows users to enjoy their digital music collections seamlessly. Additionally, the unit comes with a built-in tuner that supports RDS, enriching the radio listening experience with program information and song details. The user-friendly interface includes a vibrant display that provides easy navigation through different media options, enhancing overall usability.

On the other hand, the Alpine CDM-9821 shares many features with the 9823 but presents a more streamlined option for users who might not need all the advanced capabilities. It still maintains a robust power output and supports multiple audio formats. The CDM-9821 also features an auxiliary input, making it easy to connect external devices like smartphones or tablets.

Both models are designed with customization in mind, featuring a 3-band EQ that allows users to tweak their sound preferences to suit their taste. The built-in crossover settings further enhance audio fidelity, enabling users to optimize sound for different speakers in their vehicle.

In terms of technologies, both models utilize Alpine's proprietary technologies, such as their advanced noise reduction and sound enhancement features that ensure a superior listening experience even in noisy environments. Their compact design allows for easy installation in various vehicle types.

In conclusion, the Alpine CDM-9823 and CDM-9821 represent a fusion of quality craftsmanship, functionality, and advanced technology in car audio systems. With their impressive power, extensive media support, and superior sound quality, these units provide an exceptional audio experience for any journey. Whether you value advanced features or a simpler setup, Alpine caters to diverse needs while maintaining a commitment to excellence in car audio.