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The rules should oblige the seller to give the purchaser an operating instrucion of Cambridge Audio 640A, 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 Cambridge Audio 640A 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 Cambridge Audio 640A. 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 Cambridge Audio 640A should contain:
- informations concerning technical data of Cambridge Audio 640A
- name of the manufacturer and a year of construction of the Cambridge Audio 640A item
- rules of operation, control and maintenance of the Cambridge Audio 640A 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 Cambridge Audio 640A 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 Cambridge Audio 640A, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Cambridge Audio 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 Cambridge Audio 640A.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Cambridge Audio 640A 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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azur 540A/640A V2.0 Integrat ed amplifier User’s manual[...]
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2 Azur integrat ed amplifier Introduction .................................................................................................3 Safety precautions ......................................................................................4 Important safety instructions .....................................................................5 R[...]
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540A/640A V2.0 Integrat ed am plifier Azur integrat ed amplifier 3 Thank you for purchasing this Cambridge Audio Azur range amplifier. These version 2 models are part of our commitment to the on-going development of the Azur range. We hope that you will appreciate the results and enjoy many years of listening pleasure from them. For these v ersion [...]
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4 Azur integrat ed amplifier Checking the Power Supply Rating For your o wn safety please read the f ollowing instructions carefully before att empting to connect this unit to the mains. Check that the rear of your unit indicates the correct supply v oltage. If your mains supply voltage is different, consult your dealer . This unit is designed to o[...]
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540A/640A V2.0 Integrat ed am plifier Azur integrat ed amplifier 5 IMPORT ANT SAFET Y INSTRUCTIONS Please take a moment t o read these notes bef ore installing your Azur amplifier , they will enable you to get the best performance and prolong the life of the pr oduct. We advise y ou follow all instructions, heed all warnings and k eep the instructi[...]
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6 Azur integrat ed amplifier Power On/Off Switches the unit on and off. Mains voltage selector switch Switches the mains voltage between 1 15V and 230V . For use by installer/dealer only . AC power socket Once you ha ve completed all connections t o the amplifier , plug the AC power cable int o an appropriate mains sock et. Your am plifier is now r[...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 7 Multi-room PSU - Connect an Incogntio PS5 to supply power t o the connected multi- room k eypads/speakers. Ke ypad 1/2 - Connect one or tw o Incogntio A-BUS KP10 ke ypads (or other A-BUS compatible ke ypads) using CA T5/5e cable. Incognito AS1 0 Active Ceiling Speak ers can also be c[...]
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8 Azur integrat ed amplifier When designing our amplifiers we ha ve tried to include f eatures that allow you t o connect your system in v arious ways. The inclusion of features such as Pre-Out and Speak er B connections mean that you can flexibly configure your syst em depending on your requirements. The follo wing diagrams are designed to make co[...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 9 Speaker B connections The Speaker B connections on the back of the amplifier allo w for a second set of speakers to be used (ie speak er s located in ano ther room). The Speak er B button on the front panel allo ws this second set of speakers t o be switched on and of f. Note: When u[...]
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10 Azur integrated am plifier Standby/On Switches the unit between Standby mode (indicat ed by dim pow er LED) and On (indicated b y bright power LED). Standby is a lo w power mode where the power consum ption is less than 10 W atts. The unit should be left in Standby mode when not in use. Infrared sensor Receiv es IR commands from the supplied Azu[...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 11 Direct This control giv es the audio signal a more direct path to the power amplifier stage of your amplifier , bypassing the tone contr ol circuits for the purest possible sound quality . Bass and Treble These controls allo w subtle adjustments to the tonal balance of the sound. In[...]
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12 Azur integrat ed amplifier REMOTE CONTROL The 540A/640A V2.0 is supplied with an Azur Navigat or remote contr ol that operates both this amplifier and Cambridge Audio Azur range CD play ers. Inser t the supplied AAA batteries to activ ate. The functions relevant t o the amplifier are as follo ws: Standby/On Switches the amplifier between On and [...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 13 MUL TI-ROOM The Azur V2.0 amplifiers feature Incognit o Ready TM / A-BUS TM Ready outputs, allowing multi-r oom capability. One or tw o amplified ke ypads (and an ext ernal PSU power supply) can be plugged into the am plifier (using Cat5/5e cable and RJ45 plugs) to pr ovide multi-ro[...]
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14 Azur integrat ed amplifier amplifier is working harder . If the amplifier is mounted in a cabinet or the ventilation slots are obstruct ed the over t emperature detection ma y activate/reactiv ate after a shor t listening time. Remedy - User relat ed fault. The internal tem perature of the output transistors has reached the ov er temperature lim[...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 15 4. Short circuit detection Indicator - Unit has switched off during operation, prot ection LED flashes constantly in bursts of four . Description - During pow er up from Standby CAP5 performs a check on the loudspeaker t erminals to see if a short across the terminals has been accid[...]
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16 Azur integrated am plifier There is no power Ensure the AC po wer cord is connect ed securely . Ensure the plug is fully inser ted int o the wall socket and is switched on. Check fuse in the mains plug or adaptor . There is no sound Make sure the unit is not in Standb y mode. Check that source component is pr operly connected. Check that 'T[...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 17 540A V2.0 Power output 60 watts (into 8 Ω ) 90 watts (into 4 Ω ) THD (unweighted) <0.002% @ 1kHz, of rated pow er <0.0 70% 20Hz - 20kHz, of rated power <0.025% 20Hz - 20kHz @ 1 0w Frequency response (-1dB) 5Hz - 50kHz S/N ratio (ref 1w) >85dB Input impedances 4 7kohm[...]
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Cambridge Audio warrants this pr oduct to be free fr om defects in materials and workmanship (subject t o the terms set f or th below). Cambridge Audio will repair or replace (at Cambridge A udio's option) this product or an y defective parts in this product. W arranty periods may vary from country to country. If in doubt consult your dealer a[...]
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540A/640A V2.0 Integrat ed amplifier Azur integrat ed amplifier 19 This guide is designed to mak e installing and using this product as easy as possible. Information in this document has been carefully check ed for accuracy at the time of printing; howe ver , Cambridge Audio's policy is one of continuous impro vement, therefore design and spec[...]
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azur 540A/640A V2.0 Par t No. AP183 7 6/2 www .cambridge-audio.com[...]