Adcom GTP-870HD User Manual

Also see for GTP-870HD: Quick start guide Brochure

Contents

Adcom GTP-870HD User Manual Manual pdf 63 page image

63Chapter 5 - Helpwww.adcom.com GTP-870HD Owner’s ManualCustomer SupportUse the Troubleshooting chart on page 64 to resolvecommon situations that don’t require professional at-tention. If the information provided does not resolveyour problem, please contact your Adcom dealer orcontact the Adcom customer service department asfollows:Adcom, LLC8541 E. Anderson Dr., Suite 101Scottsdale, Arizona 85255• Telephone: (480) 607-2277• Fax: (480) 348-9876• Email: service@adcom.com• Web: www.adcom.comAdcom Protection PlanAdcom offers the enclosed valuable Limited War-ranty. Please read the details on the Warranty Cardcarefully to understand the extent of the protectionoffered by the Warranty, its reasonable limitations,and what you should do in order to obtain its ben-efits. Be sure to verify that the serial number printedon the rear panel matches the serial number on theouter carton. If any number is altered or missing, youshould notify us immediately in order to ensure thatyou have received a genuine Adcom product whichhas not been opened, mishandled, or tampered within any way. Always retain your original sales receiptas a proof of purchase.Product Care & MaintenanceBefore your Adcom preamp/processor left our fac-tory, it was carefully inspected for physical imper-fections and tested for all electrical parameters asa routine part of Adcom’s systematic quality control.This, along with full operational and mechanicaltesting, should ensure a product flawless in both ap-pearance and performance.After you have unpacked the GTP-870HD, inspect itfor physical damage. Save the shipping carton andall packing material as they are intended to reducethe possibility of transportation damage should theunit ever need to be shipped again. In the unlikelyevent damage has occurred, notify your dealer im-mediately and request the name of the carrier so awritten claim to cover shipping damages can be initi-ated. The right to a claim against a public carrier canbe forfeited if the carrier is not notified promptly inwriting and if the shipping carton and packing mate-rials are not available for inspection by the carrier.Save all packing materials until the claim has beensettled.A Special Note on “Hum”If there is a low-volume “hum” audible throughoutyour speakers, even with the main volume turnedall the way down, you have a common phenomenonknown as a “ground loop.” Generally, the cause of aground loop is the CableTV incoming signal line.To determine if your cable system is the contributingfactor, disconnect the CableTV incoming signal line(round, 75Ω) at the wall, or the first component thecable is connected to (e.g. the cable box or VCR). Ifthe hum is no longer present, you must insert a “75Ωground loop isolator” before reconnecting the line.Check with your Adcom dealer to obtain one.System ResetIn rare cases the GTP-870HD internal processor mayfreeze or lock-up causing abnormal operation. Thisis common to all micro-processor controlled devic-es when the unit is subject to excessive static dis-charge, AC line noise, or power spikes. In most casesit is easy to solve this problem by simply turning offthe GTP-870HD with the rear power switch (position0) for about five minutes. After waiting, turn the unitback on (position 1). If the unit functions normally,no further action is needed.In the event that the unit still does not operate prop-erly, it may be necessary to manually reset the pro-cessor. Note, however, that when the processor isreset you will lose all settings including digital au-dio assignments, surround mode settings, speakerconfigurations, tuner presets and any other memoryitems. For this reason we strongly recommend thatyou record these settings so that it is easy to restorethem after resetting the processor. To reset the unitto factory default settings you will need to enter thediscrete remote control command. Please refer backto the discrete remote control commands table. Thecommand name is “Factory Defaults”, the IR code is86h. This should reset the system.If the manual reset does not solve the problem, con-tact your authorized Adcom dealer, an authorizedAdcom service center or contact Adcom’s servicedepartment directly for further advice.Chapter 5 - Help