1. Introduction
This manual provides detailed instructions for the operation and maintenance of your Jensen CR-100 Portable AM/FM Radio Cassette Player/Recorder. Please read this manual thoroughly before using the unit to ensure proper function and to maximize your listening experience. Keep this manual for future reference.
2. Safety Information
- Do not expose the unit to extreme temperatures, humidity, or direct sunlight.
- Avoid dropping the unit or subjecting it to strong impacts.
- Do not attempt to disassemble or modify the unit. Refer all servicing to qualified personnel.
- Clean the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Remove batteries if the unit will not be used for an extended period to prevent leakage.
- Dispose of batteries properly according to local regulations.
3. Package Contents
Please check that the following items are included in your package:
- Jensen CR-100 Portable AM/FM Radio Cassette Player/Recorder
- Owner's Manual
4. Product Overview
Familiarize yourself with the various parts and controls of your Jensen CR-100 unit.
Figure 4.1: Front View. This image displays the front of the Jensen CR-100, featuring the cassette window, built-in speaker, AM/FM frequency dial, and the telescopic antenna extended upwards. The Jensen logo is visible above the cassette window.
Figure 4.2: Side Controls. This view highlights the left side of the unit, showing the volume control dial, microphone input, and the cassette control buttons including REC (Record) and PLAY.
Figure 4.3: Cassette Compartment Open. The image shows the unit with its cassette compartment door open, providing a clear view of the tape playback and recording mechanism inside.
Figure 4.4: Top/Side Ports. This perspective illustrates the top and right side of the unit, displaying the headphone jack, external microphone jack, tuning dial, and the AM/FM band selector switch.
5. Setup
5.1 Powering the Unit
The Jensen CR-100 can be powered by either batteries or an AC adapter (not included).
Battery Installation
- Locate the battery compartment cover on the back of the unit.
- Slide the cover open.
- Insert two (2) 'AA' (UM3) batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
- Close the battery compartment cover securely.
Note: Batteries are not included. Remove batteries when the unit is not in use for extended periods to prevent leakage and damage.
AC Adapter (Not Included)
To operate the unit using an AC adapter, plug a compatible AC adapter (DC 3V, 300mA, center positive) into the DC IN jack on the unit. Plug the other end of the adapter into a standard AC wall outlet. Using an AC adapter will conserve battery life.
6. Operating Instructions
6.1 AM/FM Radio Operation
- Slide the function switch to the 'RADIO' position.
- Select the desired band (AM or FM) using the AM/FM selector switch.
- Extend the telescopic antenna for optimal FM reception. For AM reception, rotate the unit for best signal.
- Rotate the 'TUNING' dial to select your desired radio station.
- Adjust the 'VOLUME' control to your preferred listening level.
- To turn off the radio, slide the function switch to the 'OFF' position.
6.2 Cassette Playback
- Slide the function switch to the 'TAPE' position.
- Press the 'STOP/EJECT' button to open the cassette compartment door.
- Insert a cassette tape with the exposed tape facing upwards.
- Close the cassette compartment door firmly.
- Press the 'PLAY' button to begin playback.
- Adjust the 'VOLUME' control to your preferred listening level.
- To fast forward, press the 'F.FWD' button. To rewind, press the 'REW' button. Press 'STOP/EJECT' to stop fast forwarding or rewinding.
- To stop playback, press the 'STOP/EJECT' button.
- To listen privately, plug headphones into the headphone jack. The built-in speaker will automatically mute.
6.3 Cassette Recording
The unit allows recording from the built-in microphone or from the AM/FM radio.
Recording from Built-in Microphone
- Insert a blank cassette tape into the compartment as described in Section 6.2.
- Slide the function switch to the 'TAPE' position.
- Press the 'REC' (Record) button. The 'PLAY' button will also engage simultaneously.
- Speak clearly into the built-in microphone located on the unit.
- To stop recording, press the 'STOP/EJECT' button.
Recording from AM/FM Radio
- Insert a blank cassette tape into the compartment.
- Tune to your desired AM or FM radio station as described in Section 6.1.
- Slide the function switch to the 'RADIO' position.
- Press the 'REC' (Record) button. The 'PLAY' button will also engage simultaneously, and the radio broadcast will be recorded onto the tape.
- To stop recording, press the 'STOP/EJECT' button.
7. Maintenance
7.1 Cleaning the Unit
Wipe the exterior of the unit with a soft, slightly damp cloth. Do not use harsh chemicals or abrasive cleaners, as they may damage the finish.
7.2 Cleaning the Tape Heads
Periodically clean the tape heads, capstan, and pinch roller to ensure optimal sound quality and prevent tape damage. Use a cotton swab lightly moistened with isopropyl alcohol. Gently wipe the surfaces and allow them to dry completely before inserting a tape.
7.3 Battery Care
Always use fresh batteries of the recommended type. Do not mix old and new batteries or different types of batteries. Remove batteries if the unit is not used for a long period to prevent corrosion.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Batteries are dead or incorrectly inserted; AC adapter not connected or faulty. | Replace batteries, check polarity; ensure AC adapter is securely connected and functional. |
| Poor radio reception | Antenna not extended; unit position; interference. | Extend telescopic antenna; rotate unit for better AM reception; move away from electronic devices causing interference. |
| Cassette tape not playing/poor sound | Tape heads are dirty; tape is damaged; incorrect function mode. | Clean tape heads (see Section 7.2); try a different tape; ensure function switch is in 'TAPE' position. |
| Recording not working | Tape is write-protected; microphone not close enough; incorrect function mode. | Check tape for write-protect tab; speak closer to the microphone; ensure 'REC' button is fully pressed. |
9. Specifications
| Feature | Specification |
|---|---|
| Brand | Jensen |
| Model Number | CR-100SB |
| Product Dimensions (L x W x H) | 4.02 x 1.89 x 5.35 inches |
| Item Weight | 8.4 ounces |
| Power Source | Battery Powered (2 x 'AA' UM3, not included) or AC Adapter (not included) |
| Radio Bands Supported | AM, FM |
| Special Features | Lightweight, Portable, Built-in Microphone, Built-in Speaker, Headphone Jack |
| Connectivity Technology | Auxiliary, USB (Note: USB functionality for power only, not data transfer) |
Figure 9.1: Product Dimensions. This diagram illustrates the physical dimensions of the Jensen CR-100 unit.
10. Warranty and Support
Jensen products are designed and manufactured to the highest quality standards. For specific warranty information and customer support, please refer to the warranty card included with your purchase or visit the official Jensen website. Keep your proof of purchase for warranty claims.
For technical assistance or service inquiries, please contact Jensen customer support through their official channels.
