User manual SENNHEISER HDI 450

[. . . ] 10 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Manufacturer Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1 Safety instructions Safety instructions · Read this instruction manual carefully and in full before using the device. · Make this instruction manual easily accessible to all users at all times. [. . . ] Return defective devices or devices with defective batteries to your specialist dealer. Do not heat above 70°C/158°F, e. g. do not expose to sunlight or throw into a fire. Do not expose to moisture. Do not short-circuit. Do not mutilate or dismantle. ! Store the devices/ rechargeable batteries in a cool and dry place at room temperature. 3 The HDI 450 receiver The HDI 450 receiver The HDI 450 receiver can be used together with infrared transmission systems which operate on a carrier frequency of 2. 3 or 2. 8 MHz. For charging the receiver, use the L 300 10-10 charger (see "Accessories and spare parts" on page 10). Delivery includes Delivery of the HDI 450 includes: 1 HDI 450 receiver with BA 300 lithium-polymer rechargeable battery 2 pairs of spare earpads 1 instruction manual 1 quick start guide for display at the receiver counter Product overview There is an image providing an overview of the receiver on the inside cover of this instruction manual. I Overview of receiver 1 Channel indicator 2 Volume control 3 Balance control 4 Channel selection button 5 Battery compartment 4 Using the HDI 450 Using the HDI 450 Switching the receiver on/off CAUTION!This receiver allows you to set higher volumes than conventional headphones. This can cause hearing damage in persons with healthy hearing and especially in children. Set the volume on the receiver to a low value. Do not continuously expose yourself to high volumes. Switching the receiver on and off Pull the earbows of the receiver apart. The receiver switches off automatically after 30 seconds. Adjusting the volume Use the volume control 2 to adjust the volume to a sufficient and comfortable level. 5 Using the HDI 450 Setting the receiver to the frequency of the transmission system You can set the receiver to the frequency of the transmission system yourself or have the frequency preset by your Sennheiser partner. To set a frequency on the receiver: 1 4 Put the receiver on. Solution Remove obstacles in the light path between receiver and transmission system. Are transmission system Avoid exposure to direct sunlight. and receiver exposed to direct sunlight?Is the rechargeable battery inserted properly into the receiver and fully charged?Increase the volume by turning the volume control 2 (see page 5). Remove the rechargeable battery and reinsert it into the receiver. If this doesn't help: recharge the rechargeable battery (see page 7). Move the receiver closer to the transmission system. You can hear the sound only with one ear?Possible cause Is the balance adjusted correctly?Warning signal Meaning 6 short beeps The receiver is not receiving a signal from the transmission system: · The transmission system and receiver are too far apart from one another. The receiver switches off automatically after 3 minutes. · The transmission system is switched off. [. . . ] 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. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. [. . . ]