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Cautions:

•If you will not be using the CD player with battery power for sev- eral months, remove the batteries.

•Dispose of old batteries promptly and properly.

Recharging Nickel-Cadmium Batteries

If you connect the supplied DC adapt- er (see “Using Vehicle Battery Power” on Page 8) or an AC adapter (see “Using AC Power” on Page 8) to the CD player, you can set the CD play- er to charge nickel-cadmium batter- ies while they are inside the CD player’s battery compartment.

Cautions:

•Use only the supplied DC adapter or an AC adapter that meets the specifications in “Using AC Power” on Page 8 to recharge the batteries in the CD player. Other adapters could damage your CD player or the batteries.

•Do not use the CD player or open the CD compartment cover while you are charging nickel-cadmium batteries.

•Nickel-cadmium batteries charge more efficiently if the temperature is above 40°F (4.5°C) and below 90°F (32°C).

Follow these steps to charge nickel- cadmium batteries in the CD player.

1.Connect an AC adapter or the supplied DC adapter to your CD player (see “Using AC Power” on Page 8 or “Using Vehicle Battery Power” on Page 8).

2.With rechargeable batteries in- stalled and the CD compartment cover closed, press STOP/CLEAR. CHG flashes on the display. Then CHG CHG CHG appears and the CD player starts to recharge the batteries.

It takes about 3 hours to charge new or fully discharged nickel- cadmium batteries. Subsequent charges take 2–3 hours.

3.When the batteries are fully charged, the CD player automati- cally stops charging them and turns itself off. Disconnect the AC or DC adapter.

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Optimus CD-3690 (42-5076), CD-3680 (42-5075) owner manual Recharging Nickel-Cadmium Batteries
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CD-3690 (42-5076), CD-3680 (42-5075) specifications

The Optimus CD-3680 and CD-3690, products 42-5075 and 42-5076 respectively, represent a significant advancement in compact disc players, offering a blend of innovative technology and user-friendly features. Designed for both audiophiles and casual listeners, these models exemplify the quality and convenience of modern audio playback.

One of the standout features of the Optimus CD-3680 and CD-3690 is their high-fidelity audio output. Both models utilize advanced digital-to-analog converters (DACs), ensuring minimal distortion and maximum clarity in sound reproduction. The emphasis on audio quality allows users to enjoy their favorite music as the artists intended, with rich tones and intricate detail across the frequency spectrum.

In terms of technology, these CD players incorporate a robust error correction system that reduces playback issues that may arise from scratches or dirt on CDs. This feature enhances the reliability of audio playback, allowing users to listen to a wider variety of discs without interruption. Additionally, both models are equipped with a powerful motor and precision laser mechanisms, which contribute to swift and accurate disc reading, minimizing access time and enhancing overall user experience.

The design of the CD-3680 and CD-3690 is both sleek and functional, featuring a user-friendly interface that includes an intuitive remote control. This allows for easy navigation through tracks and playlists, empowering users to tailor their listening experience to their preferences. The clear display screen shows essential information such as track number, time elapsed, and remaining time, ensuring that users are always informed about their audio playback.

Another notable characteristic of these models is their compatibility with various audio formats, including CD-R and CD-RW. This versatility makes it easy for users to enjoy personalized playlists or compilations, broadening the scope of their listening choices.

In summary, the Optimus CD-3680 and CD-3690 stand out in the crowded market of audio players. Their high-quality audio output, advanced error correction technologies, sleek design, and user-friendly functionalities make them ideal for anyone seeking a reliable and enjoyable compact disc listening experience. With these models, music lovers can rediscover the charm of CDs with modern performance enhancements.
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