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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of NEC NP2250, 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 NEC NP2250 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 NEC NP2250. 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 NEC NP2250 should contain:
- informations concerning technical data of NEC NP2250
- name of the manufacturer and a year of construction of the NEC NP2250 item
- rules of operation, control and maintenance of the NEC NP2250 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 NEC NP2250 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 NEC NP2250, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the NEC 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 NEC NP2250.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the NEC NP2250 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
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 1 of 8 Contents Product Description, Lens Specs, Screen/Aspect Ratio N o t e s a n d F o r m u l a s Pg 1 Diagrams & Distance Ch arts; 4:3 Pg 2 1 6 : 9 _ _ _ Pg 3 Lens Shift Adjustable Range[...]
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Page 2
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 2 of 8 Projection Distance and Screen Size for Ceiling Mount The following shows the proper relativ e positions of the projec tor and screen. Refer to the table to d eter mine the position of in[...]
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Page 3
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 3 of 8 Projection Distance and Screen Size for Ceiling Mount The following shows the proper relativ e positions of the projec tor and screen. Refer to the table to d eter mine the position of in[...]
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Page 4
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 4 of 8 Lens Shift Adjustable Range Lens Shift Range for Desktop and Ceiling Mount Application The diagram below sho ws the location of th e imag e position in the lens. The lens can be shifted w[...]
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Page 5
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 5 of 8 Cabinet Dimensions The following diagrams sho w the cabinet dimensions for the NP125 0/NP2 250/NP3250. Dimensions are in inc hes. For millimeters m ultiply by 25.4. 14.09 15.70 0.02 .28 .[...]
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Page 6
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 6 of 8 Lens Dimensions The following dra wings show the added dimensions for the optional l ens es Dimensions are in inc hes. For millimeters m ultiply by 25.4. 14.09 NP01FL .96 3.385 14.09 NP w[...]
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Page 7
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 7 of 8 Optional Ceiling Mount Dimensions (Model #: NP3250CM) The following diagrams sho w ceiling mount dimensions for the NP3250CM . Dimensions are in inc hes. For millimeters m ultiply by 25.4[...]
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Page 8
NEC Display Solutions of America, Inc. NP1250/NP2250/NP3250 Installation Guide Desktop and Ceiling Mount v 2.1 www.necdisplay.com NP1250/NP2250/NP3250 Page 8 of 8 Input Panel PC Control Codes Function Code Data POWER ON 02H 00H 00H 00H 00H 02H POWER OFF 02H 01H 00H 00H 00H 03H INPUT SELECT COMPUTER 1 02H 03H 00H 00H 02H 01H 01H 09H INPUT SELECT COM[...]