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Resumen del manual
Noise, hiss on AM and FM • Weak signal • Check station tuning. Adjust or replace antenna. Distortion on FM • Multi-path signals or interfe• Check station tuning. Adjust or ence from another station replace antenna Whistles or buzzes on FM & AM • Interference from other • Check station tuning. Switch off electrical sources -computers, or move the source of the games consoles electrical noise Whistles or buzzes on AM • Interference from fluorescent • Check station tuning. Adjust or lighting or electrical motor replace AM antenna No RDS name (PS) • Station signal too weak. • Check station tuning. Adjust or • Station not transmitting RDS data replace antenna • No remedy ADCOM GTP-860 II Owner’s Manual | 27 Troubleshooting Use the troubleshooting notes above to solve common situations that don’t require professional attention. If the steps stated in possible solution do not resolve your problem, then please contact your ADCOM dealer or call the ADCOM customer service department. Any problems not covered here should be brought to the attention of your ADCOM dealer or ADCOM customer service department. A special note on “hum:” When there is a low-volume “hum” audible throughout your speakers, even with the main volume turned all the way down, you have a common phenomenon known as a “ground loop.” A ground loop is basically a difference in ground voltages between two or more components which are connected electrically and which creates multiple current paths where there must only be one. This difference in potentials creates a 60Hz low- level sound (approximately a low A), that seems to “hum.” It can be caused by adding new components to your system, but that does not imply there is anything electrically wrong with any new component. With the advent of audio/video and home theater systems, the problem has become commonplace. Generally, the cause is the Cable-TV incoming signal line. This new incoming line may add an additional ground at a different potential to the AC line ground of your other equipment (refer to note I and 2, to troubleshoot a hum problem). Note 1: Cable TV systems can sometimes contribute to ground loop problems which cause “hum.” To determine if your cable system is the contributing factor, disconnect the Cable-TV incoming signal line (round, 75.) at the wall, or the first component the cable is connected to (i.e. the cable box, or VCR). If the hum is no longer present, you must insert a “75. ground loop isolator” before reconnecting the line. You should check with your ADCOM dealer to obtain one. If the “75. ground loop isolator” works only partially or not at all, then please read note 2 to complete the troubleshooting procedure. Note 2: Make sure that the power amplifier is at least 6” from processor or other equipment using microprocessors. Usually putting another component between them is sufficient to minimize the hum. If this does not reduce the hum, turn the system off and disconnect all Inputs from the amplifier. If the hum still persists, then your dealer or service center must examine the unit/system. If the hum disappears, try another set of RCA cables. Connect one RCA cable at a time to see if one specific cable is responsible. If any or all cables cause the hum to appear, then the unit should be evaluated for proper operation by your dealer or authorized service center. Please see our website or call us for a list of authorized service centers in your area. Servicing ADCOM has a technical service department to answer questions pertinent to the installation and operation of your unit. In the event of difficulty, please contact us for prompt advice. If your problem cannot be resolved through our combined efforts, we may refer you to an authorized repair agency, or authorize return of the unit to our factory. To aid us in directing you to a convenient service center, it would be helpful if you indicate which major city is accessible to your home. Troubleshooting Tip Your GTP-860II’s circuitry is built around advanced microprocessors. The GTP-860II may exhibit occasional anomalies arising from AC line surges, etc. If you experience unexpected behavior, or if the GTP-860II “locks up” and does not respond to control input, reset it by turning the front power switch off. (Do not use the remote control’s “power” button.) Wait 10 seconds and then turn the GTP-860II This unit is manufactured under license from Dolby Laboratories Licensing Corporation. It is additionally licensed under one or more of the following patents: U.S. number 3,959,950, Canadian numbers 1,004,603 and 1,037,877. Dolby® Pro Logic®, and Dolby Digital® are registered trademarks of Dolby Laboratories Licensing Corporation. Manufactured under license from Digital Theater Systems, Inc. US Patent Number 5,451,942 and other worldwide patents issued and pending. “DTS,” “dts,” “DTS Digital Surround,” are trademarks of Digital Theater Systems, Inc. Copyright 1996 Digital Theater Systems, Inc. All Rights Reserve 28 | ADCOM GTP-86...