Troubleshooting

If You Suspect Something Wrong

Check and take steps as described below.

If the described suggestions do not solve the problem, it is recommended to take the unit to your nearest authorized Panasonic Servicenter. The product should be serviced only by qualified personnel. Please refer the checking and the repair to professionals. Panasonic shall not be liable for any accidents arising out of neglect of checking the unit or your own repair after your checking.

Warning

¡Do not use the unit in an irregular condition, for example, without sound, or with smoke or foul smell, which can cause ignition or electric shock. Immediately stop using the unit and consult your dealer.

¡Never try to repair the unit by yourself because it is dangerous to do so.

Problem

Some operations

are not executable.

No sound from

speaker (s)

Possible cause a Possible solution

Some operations are not executable in particular modes such as menu mode.

aRead the operating instructions carefully and cancel the mode. If the unit is still out of order, consult your dealer.

Balance/Fader setting is not appropriate.

aReadjust Balance/Fader.

There is a break, a short circuit, poor contact or wrong wiring regarding the speaker wiring.

aCheck the speaker wiring.

English

Common

Problem

No power to the

unit

Sound is not

generated.

The demonstration screen displayed

Possible cause a Possible solution

The power cord (battery, power and ground) is connected in the wrong way.

aCheck the wiring.

Fuse blowout

aEliminate the cause of fuse blowout and replace the fuse with new one. Consult your dealer.

MUTE is set to ON.

aSet MUTE to OFF.

The wiring of speaker lines are not correct, or a break or poor contact arises.

aCheck the wiring in accordance with the wiring diagram. (Installation Instructions)

BUILT-IN AMP is set to ON.

aSet BUILT-IN AMP to OFF. Observe that “AMP OFF” is displayed on the screen.

You cannot operate the unit while the demonstration screen appears.

aPress [DISP] to end the demonstration screen.

If the demonstration screen appears frequently, there is a possibility that poor contact or wrong wiring arises between the battery lead of the unit and the battery

Common (continued)

The speaker channels are reversed between right and left.

The sound field is

not clear in the

stereo mode.

Central sound is

not settled.

The power of the

unit fails

unintentionally.

The speaker wiring is reversed between right and left.

aPerform the speaker wiring in accordance with the wiring diagram.

The plus and minus terminals at right and left channels of speakers are connected reversely.

aPerform the speaker wiring in accordance with the wiring diagram.

The safety device works.

aConsult your dealer, or your nearest Panasonic Servicenter.

Troubleshooting

and no operable

Noise

Noise is made in step with engine revolutions.

cable of the car. (The battery lead should be always powered.)

aCheck the battery wiring in accordance with the wiring diagram.

There is an electromagnetic-wave generator such as a cellular phone near the unit or its electrical lines.

aKeep an electromagnetic-wave generator such as a cellular phone away from the unit and the wiring of the unit. In case that noise cannot be eliminated due to the wiring harness of the car, consult your dealer.

The contact of the ground lead is poor.

aMake sure that the ground lead is connected to an unpainted part of the chas- sis securely.

Alternator noise comes from the car.

aChange the wiring position of the ground lead.

aMount a noise filter on the power supply.

Playing sound is

interrupted

Disc unejectable

An inappropriate speaker network (device) is used.

aUse a speaker without any speaker network, or use an appropriate speaker network system that does not cause interruption.

Something such as a peeled label obstructs the disc coming out.

aPress and hold the [OPEN] for more than 2 seconds when the face plate is open (disc forced ejection). In case that the disc forced ejection does not work, consult your dealer.

The microcontroller in the unit operates abnormally due to noise or other factors.

aUnplug the power cord and plug it again. In case the unit is still out of order, consult your dealer.

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CQ-C9901U/C9801U/C9701U

 

CQ-C9901U/C9801U/C9701U

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Panasonic C9701U, CQ-C9901U, CQ-C9801U operating instructions Troubleshooting, Common, If You Suspect Something Wrong
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CQ-C9801U, CQ-C9901U, C9701U, C9801U specifications

Panasonic has long been a notable player in the audio systems market, particularly in the realm of automotive electronics. This article focuses on the Panasonic C9801U, C9701U, CQ-C9901U, and CQ-C9801U car stereo models, which have garnered attention for their advanced features and innovative technologies.

The Panasonic C9801U stands out with its sleek design and user-friendly interface, making it an excellent choice for audiophiles and casual listeners alike. It offers a built-in 50W x 4 power amplifier, ensuring clear and powerful audio output. The model supports various audio formats, including MP3, WMA, and AAC, allowing users to enjoy their favorite music seamlessly. Bluetooth connectivity is another key feature, enabling hands-free calling and wireless audio streaming from smartphones or tablets.

In contrast, the C9701U model places a strong emphasis on sound quality and customization. Equipped with a digital signal processor (DSP), it allows users to tweak sound settings to their personal preference, providing an immersive audio experience. The C9701U also offers a variety of equalizer presets and a 13-band graphic equalizer, giving users greater control over their audio environment.

The CQ-C9901U caters to those who appreciate advanced technology features. This model includes a high-resolution LCD display that enhances visibility and usability, even in bright sunlight. It also has a comprehensive AM/FM tuner, offering access to a wide range of radio stations. The inclusion of USB connectivity allows users to connect USB flash drives and enjoy a vast library of music files, while the SD card slot provides an additional medium for music playback.

The CQ-C9801U is oriented towards versatility and practical use, marrying performance with convenience. One of its standout specs is the ability to manage and integrate with multiple audio sources, including iPods and other external devices, ensuring that users have access to their favorite music regardless of the source. It also incorporates a robust navigation system, making it an appealing option for the tech-savvy driver.

In summary, Panasonic’s C9801U, C9701U, CQ-C9901U, and CQ-C9801U models exemplify a commitment to quality audio performance and user-centric technology. With features like Bluetooth connectivity, customizable sound settings, high-resolution displays, and versatile audio source management, these models cater to diverse preferences and needs in the automotive audio landscape. Whether for sound quality, technological innovation, or ease of use, Panasonic continues to deliver compelling solutions for today’s drivers.
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