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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Dual XR4120, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Dual XR4120 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Dual XR4120. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Dual XR4120 should contain:
- informations concerning technical data of Dual XR4120
- name of the manufacturer and a year of construction of the Dual XR4120 item
- rules of operation, control and maintenance of the Dual XR4120 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Dual XR4120 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Dual XR4120, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Dual service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Dual XR4120.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Dual XR4120 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
INSTALLATION/OWNER'S MANUAL AM/FM Receiver with Detachable Face XR4120[...]
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Page 2
2 XR4120 INSTALLATION TYPICAL FRONT-LOAD DIN MOUNTING METHOD REMOV AL KE YS MOUNTING SLEEVE INST ALLA TION MOUNTING KIT OR DA SHBOARD HEAD UNIT Preparation Please read entire manual before installation. Before You Start • Disconnectnegative batteryterminal. Consulta qualifiedtechnician forinstru[...]
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Page 3
3 XR4120 INSTALLATION Wiring Diagram FUSE Whenreplacing thefuse, makesure newfuseisthe correcttype andamperage. Usingan incorrectfusecould damagethe radio. TheXR4120 usesone 10amp AGCfuselocated in-line. Antenna Connector 10 AMP AGC Fuse[...]
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Page 4
4 XR4120 OPERATION Control Locations - Receiver Preset3 /Intro Preset2 /Random Preset1 /Repeat Display TuneUp TuneDown Band/ GoBack Mode Mute Release Power Volume Knob Audio/ Menu USBPort AuxiliaryInput Preset6 /Folder Up Preset5 /Folder Down Preset4[...]
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Page 5
5 XR4120 OPERATION Control Locations - Remote Preset6 /Folder Up Preset5 /Folder Down Preset4 /Play /Pause Preset1 /Repeat Preset2 /Random Mode Band/ GoBack TuneDown Power VolumeUp Select Tune Up VolumeDown Audio/ Menu Display Mute Preset3 /[...]
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Page 6
6 XR4120 OPERATION General Operation Press RELEASE andpull awayfrom theleft sideto remove.To re-install,insert rightside offaceplate first thenpush leftside tosecure. Press or any other button to turnthe uniton.Press againto turnthe[...]
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Page 7
7 XR4120 OPERATION General Operation Pressthe volume knob toselect betweenBass, Treble, Balance,Fader, Loudness,Distance andStereo. Pressthe volume knob until BAS appears. Rotatethe volume knob left/rightto adjust. (-7minimum /+7 maximum) Pressthe volum[...]
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Page 8
8 XR4120 OPERATION Seek Tuning Manual Tuning Band Storing and Recalling Station Presets Connecting a USB Device (sold separately) Inserting an SD Card (sold separately) Playing Music Track Select Fast Forward and Reverse Pause Displaying Information Press TUNE nn or TUNE ll momentarily?[...]
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Page 9
9 XR4120 OPERATION USB / SD Card Operation PressRPT tochoose between: •Current Song- Continuouslyrepeats selectedtrack. •Current Folder- Continuouslyrepeats allfiles infolder. PressRDM tochoose between: •Off -Cancels RDMfunction. •Al[...]
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Page 10
10 XR4120 OPERATION USB / SD Card Operation •Maximum numberof files:1024 •Maximum numberof folders:512 •Maximum numberof folderlevels (subfolders): 8 Note: If thenumber offiles/folders exceedsthe maximum outlinedabove, theadditional[...]
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Page 11
11 XR4120 OPERATION Troubleshooting Problem Cause Action Unit will not turn on (no power) Yellowwire notconnected orincorrect voltageRed wirenot connectedor incorrectvoltage Checkconnections forproper voltage(11~16VDC) Blackwire notconnected Check connection?[...]
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Page 12
12 XR4120 OPERATION Limited One Year Warranty Thiswarranty givesyou specificlegal rights.You mayalso haveother rights whichvary from stateto state. DualElectronics Corp.warrants this productto theoriginal purchaserto befree fromdefects[...]
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Page 13
13 XR4120 OPERATION FCC Compliance Thisdevice complieswith Part15 ofthe FCCRules.Operation issubject tothe following twoconditions: (1)this devicemay notcause harmfulinterference, and (2)this devicemust acceptany interferencereceived, inc[...]
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Page 14
14 XR4120 OPERATION Specifications Tuningrange: 87.5MHz-107.9MHz Usablesensitivity: 10dBf 50dBquieting sensitivity: 25dbu Stereoseparation @1kHz: >30dB Frequencyresponse: 30Hz-13kHz Tuningrange: 530kHz-1710kHz Usablesensitivity: <42dBu Frequencyresponse: 30Hz-2.2kHz Speakeroutput impedance:[...]
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Page 15
15 XR4120 OPERATION Notes[...]
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Page 16
DualElectronics Corp. TollFree: 1-866-382-5476 9AM-5PMEST, Monday-Friday www.dualav.com ©2014Dual ElectronicsCorp.All rightsreserved. Othertrademarks andtradenames arethoseof theirrespectiveowners. NSA0314-V01[...]