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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Alto DJM-3, 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 Alto DJM-3 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 Alto DJM-3. 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 Alto DJM-3 should contain:
- informations concerning technical data of Alto DJM-3
- name of the manufacturer and a year of construction of the Alto DJM-3 item
- rules of operation, control and maintenance of the Alto DJM-3 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 Alto DJM-3 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 Alto DJM-3, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Alto 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 Alto DJM-3.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Alto DJM-3 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
2- CHANNEL VCA - CONTROLLED DJ MIXER WITH BEA T COUNTER DJM-3 User's Manual LTO R www .altoproaudio .com V ersion 2.3 September 2005 English[...]
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SAFETY RELA TED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the pre- sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death. Protective Ground T erminal AC mains (Alternating Current) Haz[...]
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2 PREF ACE Dear Customer: Thanks for choosing L TO DJM-3 and thanks 2-CHANNEL VCA-CONTROLLED DJ MIXER WITH BEA T COUNTER for choosing one of the results of AUDIO TEAM's work and researches. LT O We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the audio field. Becau[...]
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3 T ABLE OF CONTENTS 1. INTRODUCTION.....................................................................................................................................4 2. FEA TURES LIST .....................................................................................................................................4 3. CONTROL ELEMENTS.......[...]
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4 2. FEA TURES LIST 5 Inputs: 2 Line, 2 Phono, 1 Mic 2 Outputs: Master output through RCA connectors, headphone output via 1/4" TRS jack Gain Control and bass, middle, treble equaliser on each channel Accurate Led Meter (10 segments) PFL switch Crossfader curve Control Surround control T alk Control Digital BPM (beat per minute) Counter VCA as[...]
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3. CONTROL ELEMENTS 3.1 The TOP Cover 5 CH1 CH2[...]
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3.1.1 The CHANNEL Section -. PHONO-LINE to LINE switch This switch is available on both input channels. Y ou shall use the LINE position for all high level audio signals such as CD Players, DA T , MD, etc. Y ou shall use the PHONO- LINE position to connect the turntables making sure that the PHONO-LINE switch on the rear panel is on PHONO position.[...]
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7 3.1.3 The MAIN OUT Section -. LEVEL control This knob controls the overall output volume. -. The T ALK control When you speak through a connected microphone the volume of the reproduced music will be automatically reduced by the mixer for better intelligibility of your voice. Y ou can determine yourself how much the volume of the music will be re[...]
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8 3.1.6 The BPM ( Beat per Minute) Section This is a key and exclusive function in your DJM 3 mixer . What is the Beat Per Minute function/ It simply indicate the "speed" of the music through a 3-digit display . The beats (per minute) of the music are automatically measured by the BPM and then displayed on the 3-digit display . Of course [...]
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3.2 The Front Panel MIC IN PHONE OUT REVERSE HOLD REVERSE T AP CROSSF ADER CURVE SMOOTH SHARP 9 23 24 25 26 3.2.1 MIC IN Jack This input will accept and unbalanced low impedance microphone. The functions of the microphone will be controlled by the MIC INPUT section on the T op Panel. 23 3.2.2 The PHONE OUT Jack This input will accept a standard hea[...]
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10 3.3.1 AC Inlet and Fuse Holder 27 3.3.2 POWER Switch This switch turns the Mixer ON and OFF . 28 3.3.3 MAIN OUT Both MAIN output and T APE output are RCA types connectors. Y es the same largely used in hi-fi and are low impedance. Through the MAIN output you can connect your DJM 3 to an amplifier . Through the T APE output you can connect your D[...]
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11 4. TECHNICAL SPECIFICA TIONS INPUTS Phono Inputs 1 and 2 Line Inputs 1 and 2 Mic Input Return OUTPUTS Headphones Main Out T ape Out Send GENERAL Stereo Bass Stereo Middle Stereo T reble Mic Bass Mic T reble Input Gain Adjustment Signal to Noise ratio(S/N) Crosstalk Distortion(THD) Frequency Response POWER SUPPL Y Connector type Main V oltage Pow[...]
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12 5. SYSTEM BLOCK DIAGRAM[...]
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13 6. W ARRANTY 1. W ARRANTY REGISTRA TION CARD T o obtain Warranty Service, the buyer should first fill out and return the enclosed W arranty Registration Card within 10 days of the Purchase Date. All the information presented in this W arranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a [...]
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NF 01037-2.3 No. 1, Lane 17, Sec. 2, Han Shi West Road, T aichung 40151 T aiwan http://www .altoproaudio.com T el: 886-4-22313737 email: alto@altoproaudio.com Fax: 886-4-22346757 c All rights reserved to AL T O. All features and content might be changed without prior notice. Any photocopy , translation, or reproduction of part of this manual withou[...]