HP4290 Cordless and Corded Stereo 900MHz Headphone System User's Manual
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT.
FEATURES 1. Auto Scanning system on headphone 2. Phase Lock Loop (PLL) transmission system on transmitter 3. Automatic battery recharging (batteries supplied). 4. 900 MHz RF technology. 5. RF technology leaves you completely free to move around. 6. Transmission is not restricted solely to line of sight. 7. Rechargeable receiver headphones. 8. Charger built into the transmitter. 9. High quality stereo sound that is virtually interference-free. 10.
COMPONENT IDENTIFICATION 3
COMPONENT IDENTIFICATION 1 RF receiver headphones 2 Power indicator light 3 Power On/Off switch 4 Charge contacts 5 AUTO SCAN button 6 Volume control knob (VOL) 7 Line-in Jack for connection with cable to use as normal corded headset 8 Charge contacts 9 RF transmitter 10 Operating indicator light 11 Charge indicator light 12 Audio connection cable with 3.
INSTALLATION TRANSMITTER 1. Connect the mains adapter provided to an electrical outlet. 2. Connect the mains adapter cable to the DC IN input connector located on the transmitter rear panel. 3. An audio cable is provided from the transmitter rear panel that can be connected to the audio outputs (Left and Right) present on a TV set, Hi-Fi system, VCR or radio-cassette player.
OPERATION 1. Switch on the sound source (TV set or audio component) that the transmitter is connected to. 2. Place the headphones On/Off switch in the On position. 3. Place the headphones on your head and adjust the volume to obtain the desired sound level. 4. If you cannot find the best reception frequency, press the "Auto Scan" button on the headphones. NOTE: You should then be able to move around freely from one room to another without any interference.
CHARGING THE BATTERIES 1. Place the On/Off switch on the receiver headphones in the Off position. 2. To recharge the headphone batteries, place the headphones on the transmitter, taking care to ensure that the charge contacts touch the transmitter's charge prongs and the green charging indicator is ON. 3. The charge process starts automatically and the green indicator light comes ON. Be sure to charge new batteries for 24 hours before using them for the first time in the headphones.
WARNING: Never attempt to recharge conventional dry cells. Never use another type of battery or non-rechargeable batteries to replace the rechargeable (LR03/AAA) batteries supplied. When the headphones are not in use, move the switch to the OFF position to avoid damaging the batteries. The batteries must always be fully charged before first use. An initial 24 hour charge is required to guarantee an acceptable service life for the rechargeable batteries.
REPLACING BATTERIES Rechargeable batteries have a long service life. If it is however necessary to replace them, proceed as described below: 1. Carefully pull out the right-side (R) earpad holder from the receiver headphones. Install the 2 new rechargeable batteries in their housings as illustrated. Check the correct +/- polarity. 2. Put back the earpad holder into the receiver headphone and make sure to align the plastic holding slots on the receiver headphones.
TECHNICAL SPECIFICATIONS Transmission mode : UHF stereo Carrier frequency : 900MHz Operating voltage : Transmitter – 12 V 200 mA Receiver – 2.4 V (two rechargeable batteries, LR03/AAA size) Frequency response : 30 Hz – 11 KHz Distortion : 1.
TROUBLESHOOTING NO SOUND - Ensure that the mains adapter is pushed fully into the power outlet and that its cable is properly connected to the DC IN 12V connector on the transmitter. - Ensure that the headphones On/Off switch is switched to the On - The headphones battery charge level may be too low. Recharge the batteries or replace them with fully charged batteries. - Ensure that your TV set, Hi-Fi system or audio component is switched on and set to a channel that broadcasts an audio signal.
DISTORTION - If distortion appears, press the “Auto Scan” button again. - Use the channel selector to change the transmitter's transmission frequency. Then you will need to adjust the tuning control by press the “Auto Scan” button on the headphones. - The headphones battery charge level may be too low. Recharge the batteries or replace them with fully charged batteries. - Ensure that the volume knob setting is correct. - The headphones may be too far away from the transmitter.
