Daily maintenance of project♦≈or
I. the projection environment ♦< ↑light cannot be strong, and the bes" βγt is weak light < br / >
The projection quali↑≥ty of projector is not only ↑¶←φrelated to the brightness of p✔★±™rojection bulb, but als"o to the influence of pro$×jection environment. TheΩ ×∏ light intensity of projecto≠₩♣¶r working environment will directly ₹♦>affect the effect of projection. Ther☆≠efore, before using the prβ£εojector, we must first arrange the wo↔÷rking environment of the projectoγ•↓r to make the projecα<₩tor bulb work in the dark light ÷♣environment as much as po↔λssible. Bright ambien₩"t light will make the brigh☆₩§φtness effect of the projection bu¥ &γlb worse, and students w↓ βill have difficulty watching. In order • ≤to make the projector get a better pr✘εojection effect, we m $←ight as well install dar↓¥k opaque curtains in th✘→e room to block the "₩outdoor light. The wallsβΩ↑± of the room use mate↑ rials that are not suitable for refle™✔≈£ction. These details will make the≈> projector produce a better proj÷∏"÷ection effect when the brightness of"♥¶ the projection bulb is the same.
2. Pay attention to the sequeπ¶>nce of power switches < br / >
The correct switching of projector p ≈←"ower supply has a great influence on'≤δ the service life of projectorσσ<λ bulb and its internal access§λories. If the power of ←>↓the projector is turn₩↔"€ed off at random, the proj₹βλector bulb and the pow₩εer of the circuit part of the p€α≥rojector may be turned"± off together, so that the coolin★★±g fan inside the projector stops↓× working due to the power failure, resuσ'lting in the large amount of₽ ¥ heat generated by the proje ↓ctor bulb and the projecto£ λ r during the working process can not ≥β☆be discharged through the cooling fan iβ±₽'n time, which is likely to cause t§↔ he explosion of the project≠♥✔or bulb. Damage the intern✔♠ &al circuit board so ∞ that the projector does not work propε♣₽erly. The correct operation sequence f₽δor switching the power on and off of thβ∏©e projector is: turn on the power first÷₽, and then press and hold the indi₹∏¶εcator light button on the projector ε♥↕₩control panel until it does not flash✔∑£β; you can also send the power on co>₹mmand through the power on butt$≥on on the remote control, and¥® the projector will ∑™≠>start up according to the preseλ↓t power on procedure. When s¥±"∏hutting down the projector, do not dirΩ<βectly cut off the power s££upply. First press and hold the shutdown indicator button u↕↑ntil the light does not flash. (aεφγ₹t this time, the cooling fan inside ☆§↔the projector continue™"s to operate and dissipate heat, a'€nd stops rotating after abo∏ δ™ut 5 minutes); you can also issue t★¶he shutdown command through↕≠ the shutdown button on the remote>< control, and then t¥•↕he CPU inside the project™•≥or will instruct the₩$ cooling fan to dissipate ↑ heat at full speed. At the same time, >↔the CPU will detect the tλ♠σ€emperature inside the projector.♦₽< If it is above 40 ℃, it ₩₩≤≈will issue the command to make the §£§cooling fan continue t♦₽o operate and dissipa λte heat, if it is at 4 ℃. If the temper ←₩ature is below 0 ℃, send out the c♦≠₩ommand to stop the cooling fan•®&, and inform that the power λ®≠≠can be cut off by means of ★←↑the indicator light, then cut o☆₹↕✘ff the power supply of $☆the projector.
III. there should be a certain time ε"interval between restart after shutδφdown < br / >
When the projector is switched from the♥♥ on state to the off state, t&γhe heat dissipation time sφ€♦hall be at least 5 minutes apart. B←'ecause the power suppl↓₽☆λy of the projector ad&ε€₽opts the method of switching poweε'r supply to reduce vo¥✔♣★ltage, stabilize voltage an×♠δ'd stabilize power. When s →÷βwitching on and off f•§requently, the high-✘¶÷power switch tube and transfor€→¥'mer used by the projector'σγ™ power supply work at a ε♣higher frequency, and the switch tube w♦∞ill produce considerablβ♣♥e power consumption in ✘★↓✔the process of frequent switching, and ×φ ™these lost power will turn&<✔. When the power supplyβ←Ωβ of the projector is switche"±d on and off frequently, it will prod&♠uce a great current impact •££on the projector bul♠δ€b, which is easy to cause damage to∑φ↓ the projector bulb. It may also≥€£♠ cause damage to the pro$♦≠jector bulb. Broken parts in the cש ircuit.
IV. the power supply voltage used shδ↕all be stable < br / >
The stability of power supply meφγφans that the projector and its signal s© ource (that is, the computer connect₩π✘ed with the projector↑&§ and providing projection signal for ✘φthe projector) should be conne™∏↓cted to the same good₩£✔≈ quality power socket. The proje®ctor and its signal sour↑₩ ↑ce use the same good qu ality power socket, which±¥ can avoid the sparking between the✘¥ sockets caused by plu∏∞ gging in and out of the power≤ × supply, damage the Ω¶↔↑power supply circuit insi↓✔÷&de the projector, and preve>≠≤nt the possible power©♣ mismatch problem, so as to ensure♦♥α¶ the normal operationγ of the projector. In order to prλ•¥δevent the explosion accid→≤↑ ent of the projection bulb an™§™≤d the power mismatch of the project¥₽©≈or, the power specificati✔•ons of the projector are strictly regul¶δ☆ated. When the user connects the©∑α projector to the power outlet. Wh₹≠en users plug and unplug the si≈gnal line or other circ∞<∑₹uits with power, there will be a spaσ★rk between the plug and©β¶¥ socket, which will damage the signalσ& input circuit, makeΩπ> the projection bulb can not work☆≤•δ normally, seriously damage the proje€₽±←ctor, and even cause fire aδ≥ccidents. Therefore, the £≤power cord attached to the projector↔€ must be used. Sometimes ׶, because the extension cord is requ•ε€™ired during use, the power extension c$®§ord shall be copper core δ$wire with good quality, and the wi≈ '≠re diameter shall not be too thin; ≠at the same time, the p∏ower socket connected with the powe±≥≈r cord shall be reliably groφ>unded.
V. cannot work continuously for more♣¶ than four hours < br / >
If the projection bulb w₩£←orks continuously for more th♦₹↕"an four hours, the accumulation ≠§←↑of heat emitted by the imaging syst¥∏em inside the projector will cause th ✔≠e temperature inside the projector to rise rapidly, because the quartz on "the inner wall of the projecti♠♦on bulb will produce the phenomenon ∏"φ×of loss of transparency under high £★£temperature, which will♠π↑ cause white spots on the §≠shell of the projectio÷δ®n bulb, and the loss of tra≠×nsparency will block the lig≈↕εht from shooting out in♦σσ a large amount, making the projecti♠∑on lamp The temperature of the'✔✔£ local area of the bubble shell ≥♣×Ωincreases abnormally, whiσ♠×ch makes the devitrific©♠ation area expand further,≈↓δ makes the brightness of the pro ¥₽jection bulb decay rapi♠★>≥dly, and easily leads to buσ↕lb explosion. Therefo ★✘re, it is very necessa✘£ry for the projector to stop worφ→ ♥king and cool down in time to p®"rolong its service lifeDo not allow the¥→ projector to work f€±☆✘or more than four hours at a time.
Vi. it is strictly prohibited to shut down abnormally or cutγ✔ off power suddenly < br / >
At present, most projectors uσγ↓se cold light source systemα♠≠. The electric and optical"φ conversion efficiency of pro★ ∞jection bulb is high, and the heat♦× generated is greatly reduced compar∞£&ed with the original metal halid÷ e bulb. However, the volume of current∞≤✘ projectors is generally sm♥γall, and it is easy to form accumulated←≥™ temperature in some parts, ≠±>≈which requires fast heat d ↓£issipation by exhaust channel, which rλ♦equires the cooling fan to be pow¶φered on for a period$♠ of time after shutdown.φ★ So that the accumulated temper∏φature inside the projector ca∏≥n be distributed in tim♥★e. Because of this, the switc★§hing operation of the projector on and ≥♥off must be carried ε≠♥out in strict accordan₽ ←ce with the normal on and off sequ☆'≥ence. Abnormal shutdown is a kind↕₩¶ of misoperation that ✔™↓♦seriously violates t'∞he on-off process. This mis♠←€operation can reduce ≠♥εthe effective life of projection bu£•lb for up to 200 houφ→rs or even longer each time, whic∏✘∞¥h is costly and must be avoided. Sudd$§λen power failure is mor↔ ™e harmful to the projector thaγ×n abnormal shutdown, because the suddα↑en power failure causes too high interΩ≈♣nal accumulated temperature of t ×λhe projector, which may cause the chi<>>pset on the main board to work abnormal₽•ly, resulting in image yellowing, no"±₹§ signal output and o"©¶ther faults.
VII. Regular dust removal < br / >
In the process of usin♦ ≠₩g the projector, it is ofte≥←γ∞n necessary to install a hanging bo®÷δx to hang in the air. Thi♣✔↔s kind of environment is easy to acc÷¥☆©umulate a large amount of dust₹, which can easily lead to '"φoverheating protection of the<≠£ projector in half an hour∏×☆" of starting up, and it can not be ✘♠∑started up. In the high t§$emperature and humid÷←ity season or area, the humidity will mו±ake the dust accumulated o₩×n the shell of the projec×≠∏tion bulb form a cement li<✘✘ke film layer, whichεδ will cause the local accumλ™πulated temperature of the projection b÷δ∞ulb to be too high, the heat will expΩ✔and and shrink, and the projection§✘ bulb will burst. Therefore, regu'₽larly ask professional person↕♥nel to clean up the dust and pro™§long their service life. The δ"reason for prolonging the life of • ≠the lamp is to first safely turn off tβ✘←he machine and fully dissipa$γδte heat. Secondly, kee×↕♥ping the environment clean and tidy, an±φ d using it in too wet plac©€'es will also shorten t♦≈♣↓he service life of the α→bulb. However, at present, ma≤&♦ny projector products are eq£•εuipped with good heatε♠ dissipation design and other mean α×s to improve the utili ¥πzation of light source.Theλ× service life of the bul₩b has a better continuatio<$n.
Company News
