Manuals / JBL / Home Audio / Home Theater System

JBL DSC 400, DSC 800 manual Troubleshooting

Models: DSC 800 DSC 400

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T R O U B L E S H O O T I N G

If you experience any of the following difficulties while using the system, use this troubleshooting guide to help you remedy the problem. Should any problem persist, consult your authorized JBL dealer.

No power.

•Is the power cord firmly plugged into the power outlet?

•One of the safety mechanisms may be operating. In this event, unplug the player from the power outlet briefly and then plug it in again.

No picture.

•Check that the system is connected correctly and securely.

•The video cable may be damaged. Replace it with a new one.

•Make sure the system is connected to a video input on the TV (see page 15).

•Make sure the TV is turned on.

•Make sure the correct video input on the TV is selected for viewing with this system.

Noise (interference) appears in the picture.

•Clean the disc.

•If video from this system has to go through your VCR to get to your TV, the copy-protection applied to some DVD programs could affect picture quality. If you still experience pro- blems after checking your connecti- ons, please try connecting your DVD system directly to your TV’s S-Video input, if your TV is equipped with this input (see page 15).

The aspect ratio of the screen is wrong (picture vertically expanded) when you play a wide picture even though you set “TV DISPLAY” in the SETUP menu to "WIDE 16:9".

•If you connect the system with the SCART cable, connect directly to the TV. Otherwise the autoswitch function of the aspect ratio for the TV may not work.

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•Depending on the TV, you may not be able to change the aspect ratio. In that case (TV not adjustable to 16:9) do not select "WIDE 16:9" in the TV Display. Then, no change of the aspect ratio is needed.

There is no sound or volume is very low

•Check that the speakers and components are connected correctly and securely.

•Make sure that you have selected the correct source on the system.

•Press MUTE on the remote control if the red MUTE LED on the front panel is blinking.

•The protective circuitry has been activated because of a short circuit. Turn off the system, eliminate the short circuit problem and turn on the power again.

•The audio interconnect is damaged. Replace it with a new one.

•The system is in pause mode or in slow-motion play mode, or fast

forward or fast reverse. Press /B to return to normal play mode.

•Check the speaker settings (see page 30).

The left and right sounds are unbalanced or reversed.

•Check that the speakers and components are connected correctly and securely.

•Adjust front balance using SELECT and ADJ/VOL +/- (see page 41).

Severe hum or noise is heard.

•Check that the speakers and components are connected securely.

•Check that the connecting cords are away from a transformer or motor and at least 3 meters away from fluorescent light.

•Move your TV away from the audio components.

•The plugs and jacks are dirty. Wipe them with a cloth slightly moistened with alcohol.

•Clean the disc.

The surround effect is difficult to hear when you are playing a Dolby Digital sound track.

•Check to see if the Dolby Digital mode is turned on properly (red "Dolby Digital" indicator lights in the front panel), otherwise unload and load the disc again.

•Check the speaker connections.

•Depending on the DVD disc, the output signal may at times be mono or stereo even if the soundtrack is recorded in Dolby Digital format.

The sound comes from the center speaker only.

•Depending on the disc, sound may sometimes come from the center speaker only. This also applies to mono recordings (from disc or any analog source), when Pro Logic or 3 Stereo mode is selected. This is normal.

No sound is heard from the center speaker.

•Do not set listening mode to Dolby Pro Logic Phantom (see page 36).

•Adjust center speaker volume (see pages 40).

No sound or only very low volume from the rear speakers.

•Do not set listening mode to 3-Stereo (see page 36).

•Adjust the rear speaker volume (see page 40).

Radio stations cannot be tuned in.

•Check that the antennas are connected correctly. Adjust the antennas and connect an external antenna if necessary.

•The signal strength of the stations is too weak for automatic tuning. Use manual tuning.

•No stations have been preset.

•The tuner mode is not selected, select the Tuner mode.

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JBL DSC 400, DSC 800 manual Troubleshooting
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DSC 800, DSC 400 specifications

The JBL DSC 400 and DSC 800 are two advanced sound systems engineered to deliver superior audio performance while catering to varied user demands. Both models are part of JBL's commitment to high-quality acoustic design and cutting-edge technologies, making them ideal for both casual listeners and audio professionals.

The JBL DSC 400 features a robust amplifier designed to provide optimal power output, ensuring clear and dynamic sound reproduction. With a total output power of 400 watts, the system is capable of filling large spaces with crystal clear audio, whether for home entertainment or professional use. Its built-in digital signal processing technology enhances sound quality by minimizing distortion and optimizing frequency response. The DSC 400 is also equipped with Bluetooth connectivity, allowing users to stream music wirelessly from their devices with ease.

In contrast, the JBL DSC 800 is engineered for audiophiles seeking even more power and fidelity. With an impressive 800-watt output, it is ideal for large venues or home theater systems requiring high sound pressure levels without compromising audio clarity. The DSP technology in the DSC 800 takes sound customization to the next level, enabling users to tailor the audio experience according to their preferences. This includes adjustable equalizer settings that allow fine-tuning for various genres of music and audio environments.

Both systems are designed with user-friendly interfaces, featuring intuitive controls that make it easy for anyone to operate. They come with multiple input options, including USB ports, auxiliary inputs, and multiple HDMI connections, ensuring compatibility with a wide range of devices and media formats. This versatility allows users to connect their televisions, gaming consoles, and multimedia players seamlessly.

The sound quality of both the DSC 400 and DSC 800 is characterized by deep bass response and crisp highs, resulting in a balanced audio experience. The use of high-quality drivers and innovative cabinet designs minimizes sonic interference and enhances overall durability, making them suitable for both indoor and outdoor use.

Ultimately, the JBL DSC 400 and DSC 800 embody the latest advancements in audio technology, offering exceptional sound quality, extensive connectivity options, and robust design. These systems are perfect choices for anyone looking to elevate their audio experience, whether at home or in professional settings, ensuring that JBL continues to set standards in the world of sound.