Epson PowerLite Tsev Xinesmas 3500 Video Projector - Diam duab Profile

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Epson PowerLite Tsev Xinesmas 3500 Video Projector Cov duab thiab nta

Epson PowerLite Tsev Xinesmas 3500 Video Projector - Pem hauv ntej Saib Diam duab nrog Accessories. Yees duab © Robert Silva - tso rau hauv.com

Lub Epson PowerLite Tsev Xinesmas 3500 yog ib qhov video projector uas nta ob qho tib si 2D thiab 3D tso peev xwm. Nws tseem nta MHL -enabled HDMI tawm tswv yim uas yuav siv coj los txuas tau tshaj tawm cov khoom xa tawm, nrog rau Roku Streaming Stick , nrog rau cov txheej txheem hauv ob lub kaw lus.

Rau kev saib-xyuas ze ntawm nws cov nta thiab cov kev sib txuas, mus ntxiv nrog cov duab nram qab no.

Tshaj nyob rau ntawm thawj daim duab saum toj no yog saib cov khoom uas tuaj hauv PowerLight Home Cinema 3500 Projector pob.

Nyob hauv nruab nrab ntawm daim duab yog lub projector, nrog Phau Ntawv Qhia Ntxiv, Kev Tshaj Tawm Ntawm Daws Teeb, thiab CD-ROM (Tus Neeg Pab Phau Ntawv Pab).

Tsiv mus rau sab laug ntawm lub projector yog lub hwjchim qis qis qis.

So hauv ntej ntawm lub projector yog qhov chaw tswj cov chaw taws teeb thiab ob chav ntawm 3D iav.

Qhov nta yooj yim ntawm Epson PowerLite Tsev Xinesmas 3500 muaj xws li:

1. 3LCD video projector nrog (1980x1080) 1080p haiv neeg pixel daws teeb meem , 16 x 9, 4 x 3, thiab 2.35: 1 nam piv tshaj.

2. Lub teeb meem loj: Ntau tshaj 2500 Lumens (ob qho tib si xim thiab b & w - txheem hom), Feem Piv Txwv: txog li ntawm 70,000: 1 (2D - txheem hom), Lamp neej: Mus txog 3500 teev (hom hom) - 5,000 teev (ECO hom ).

3. Zog muaj peev xwm saib tau 3D ( Lub tshuab ntaus Sab Nraud , ob chav ntawm tsom iav).

4. Chav tsev qhov ntev: (W) 16.1 x (D) 12.6 x (H) 6.4 nti; Qhov hnyav: 14.9 lb lbs.

5. Cov Nqe Suav: $ 1,699.99

Kom paub meej txog cov nta thiab specifications ntawm Epson PowerLite Tsev Xinesmas 3500, xa mus rau kuv Tshawb Xyuas.

Taug kev mus rau tom ntej yees duab.

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Pem Hauv Ntej thiab Tsheb Tshawb Pom

Epson PowerLite Tsev Cineam 3500 Video Projector - Pem Hauv Ntej thiab Tsheb Tshawb Pom. Yees duab © Robert Silva - tso rau hauv.com

Pom hais saum toj no yog ib daim duab uas pom ob sab pem hauv ntej thiab pom ntawm Epson PowerLite Tsev Xinesmas 3500 Video Projector.

Pib nrog cov duab saum toj kawg nkaus, ntawm sab laug yog cua pa tso pa.

Tsiv sab laug, dhau ntawm Epson logo (nyuaj rau pom nyob rau hauv no yees duab li nws yog dawb), yog lub Lens. Ib puag ncig lub lens yog lub zog thiab ua kom pom tseeb ntawm lwm yam.

Ntawm sab xis ntawm lub lens yog pem hauv ntej chaw taws teeb tswj sensor. Sab hauv qab ntawm sab laug thiab sab xis yog cov kauj khawm kho uas tuaj yeem nce lub kaum sab xis ntawm lub projector.

Cia li saum toj no lub lens yog cov kab rov tav thiab ntsug Lens ua haujlwm Controls ..

Tsiv mus rau hauv qab duab yog qhov pom ntawm Epson PowerLite Home Cinema 3500 video projector.

Qhov nruab nrab ntawm lub vaj huam sib luag nram qab no los ntawm ntau yam kev sib txuas lus thiab tswj kev sib txuas, thaum lub AC receptacle thiab nyob rau hauv qab.

Tsis tas li ntawd, qhov chaw "grill" rau sab laug thiab sab xis ntawm lub vaj huam sib luag kev txuas yog qhov chaw uas muaj suab nrov built-in nyob.

Yog xav paub ntxiv txog cov tswv yim yees duab thiab kev sib txuas lus, mus rau lwm tus duab ntxiv ...

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Epson PowerLite Tsev Xinesmas 3500 video projector - To top View

Epson PowerLite Tsev Xinesmas 3500 Video Projector - Diam duab ntawm saum Saib. Yees duab © Robert Silva - tso rau hauv.com

Sau rau ntawm phab ntawv no yog qhov pom ntawm Epson PowerLite Home Cinema 3500 uas qhia txog cov ntawv teev cov ntawv qhia kev siv thiab kev tswj xyuas, nrog rau kev hloov ntawm lub lens. Tsis tas li xwb, ntawm sab xis, yog ib lub hau uas tshem tau uas muab nkag rau lub teeb txawb rau kev hloov.

Rau kev sib tshum zoo saib, thiab piav qhia ntawm lub lens ntawm kev tswj, npaj mus rau tus yees duab tom ntej ntxiv ...

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Epson PowerLite Tsev Xinesmas 3500 video projector - Lens Controls

Epson PowerLite Tsev Xinesmas 3500 video projector - Lens Controls. Yees duab © Robert Silva - tso rau hauv.com

Sau rau ntawm nplooj ntawv no yog saib kev sib txuas ntawm lens sab nraud ntawm Epson PowerLite Tsev Xinesmas 3500 video projector.

Lub zog thiab ua kom pom tseeb ntawm cov npej ntawm cov rings nyob ib ncig ntawm sab nraum lub lens, thiab cov khoom ntawm sab saum toj yog cov Kab Laum Kab Rov Tav thiab Ntsug Lens .

Taug kev mus rau tom ntej yees duab ...

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Onboard Controls

Epson PowerLite Tsev Xinesmas 3500 video projector - Onboard Controls. Yees duab © Robert Silva - tso rau hauv.com

Sau rau ntawm nplooj ntawv no yog cov kev tswj ntawm on-board rau Epson PowerLite Tsev Xinesmas 3500. Cov kev tswj no kuj tau duplicated ntawm lub wireless chaw taws teeb tswj, uas yog qhia tom qab hauv qhov profile no.

Pib ntawm sab laug sab saum toj yog lub teeb thiab kub qhov taw qhia teeb qhia.

Cia li qis dua qhov qhia teeb, yog qhov ntsuas zog, ua raws li lub hwjchim ntawm lub hwjchim, thiab Qhov Kev Xaiv Qhov Khawm - txhua lub laub ntawm cov nyees khawm no nkag mus rau lwm qhov tawm tswv yim.

Tsiv mus rau sab xis yog cov ntawv siv tau thiab cov khoom siv navigation. Nws tseem ceeb heev uas yuav tsum nco ntsoov tias ob txoj kev nyees khawm kuj ua ob txoj haujlwm tseem ceeb ua Keystone Correction tiv thaiv kab mob, hos sab laug thiab txoj kev nyees khawm ua haujlwm xws li ntim ntawm lwm qhov chaw rau cov lus sib tham, thiab kab nrib pleb khawm.

Kev saib ntawm lub vaj huam sib luag nram qab thiab piav qhia txog cov kev sib txuas, muab mus rau tus yees duab tom ntej ntxiv ...

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Tsheb Vaj Huam Sib Luag

Epson PowerLite Tsev Xinesmas 3500 Kev Sib Txuas. Yees duab © Robert Silva - tso rau hauv.com

Ntawm no yog lub sijhawm ze ntawm qhov kev sib txuas uas tau muab ntawm Epson PowerLite Home Cinema 3500 video projector.

Pib ntawm sab laug sab laug yog ob qho kev nkag siab hauv HDMI . Cov ntawv tso cai no cia qhov kev txuas ntawm HDMI lossis DVI qhov chaw. Cov ntaub ntawv nrog DVI tawm tau txuas nrog lub tswv yim ntawm HDMI ntawm Epson PowerLite Home Cinema 3500 ntawm DVI-HDMI adapter cable.

Ntxiv thiab, raws li qhov ntxiv lawm, lub HDMI 1 tawm tswv yim yog MHL-enabled , uas txhais tau hais tias koj tuaj yeem hu tau rau MHL-tshaj li, xws li qee cov smartphones, ntsiav tshuaj, thiab Roku Streaming Stick.

Cia li qis dua ob qhov HDMI inputs yog ib pawg ntawm kev sib txuas uas muaj xws li lub PC (VGA) saib cov lus tawm , 12-volt tso zis, RS232-C interface kev txuas (siv rau kev sib xyaws ntawm kev tswj kev sib txuas), thiab ib txheej Composite Video (daj ) thiab analog tso suab nkag .

Tsiv mus rau sab xis yog ib txheej Component Video inputs, mini-USB (rau kev pabcuam nkaus xwb), thiab standard USB chaw nres nkoj (yuav siv tau cov ntaub ntawv tshaj tawm ntawm lub drive los yog lwm yam tsav sab nraud los yog siv cov yeem Epson 802.11b / g / n wireless LAN module).

Kuj qhia yog ib qho 3.5 hli audio output rau kev twb kev txuas mus rau lwm lub suab.

Nyob rau sab xis txoj cai yog ib qho chaw ntom ntsa mounted cov chaw taws teeb tswj kev lag luam. Kev saib cov chaw taws teeb nrug nrog Epson PowerLite Home Cinema 3500 video projector, npaj mus rau lwm daim duab.

Nrhiav kom pom cov Kev Tswj Twj Tshua uas tau muab nrog Lub Tsev Xwm Txheej 3500, npaj mus rau lwm tus duab ...

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Chaw Taws Teeb Kev Tswj

Epson PowerLite Tsev Xinesmas 3500 video projector - Chaw taws teeb Control. Yees duab © Robert Silva - tso rau hauv.com

Lub Chaw Tswj Cov Chaw Tiv Thaiv rau Epson PowerLite Tsev Xinesmas 3500 pub kev tswj ntawm feem ntau ntawm cov dej num ntawm lub projector ntawm onscreen menus.

Cov chaw taws teeb no yoojyim rau hauv lub xib teg ntawm xib-teg ntawm txhua tus tes thiab nta nws tus kheej piav qhia. Tsis tas li ntawd, tej thaj chaw deb kuj yog ib qho backlit, ua kom yooj yim siv nyob rau hauv ib chav darkened. Txawm li cas los, ib qho ntxiv lawm yog tias yog koj muaj lub Roku Streaming stick txhaws rau hauv lub projector, koj tuaj yeem siv tib qho chaw no los ntawm feem ntau ntawm cov Roku teeb thiab app navigation menus.

Pib hla saum toj (thaj chaw hauv dub) yog lub hwj huam khawm, thiab cov tswv yim xaiv cov nyees khawm. Muaj kuj muaj P-hauv-P (Duab-hauv-Daim Duab) thiab USB / LAN access nyees khawm.

Siv lub iPad / LAN feature, koj yuav tsum muas cov yeem Epson USB Wireless LAN module. Qhov kev xaiv no tso cai rau koj txhawm rau txhim kho lub 3500 kom tau wirelessly nkag tau cov ntsiab lus los ntawm kev sib txuas network, xws li lub PC lossis laptop.

Hauv qab cov playback tswj ntawm lwm tus (siv nrog li txuas nrog USB), thiab cov HDMI (HDMI-CEC), thiab Volume Controls.

Tom ntej no yog ib qho uas muaj xws li 3D Hom Ntawv, Xim Hom, thiab Super Res / Nthuav Qhia Txhim kho ntawm lwm yam.

Lub voj ncig hauv qhov chaw ntawm cov chaw taws teeb tswj muaj cov Ntawv Qhia Siv thiab cov khawm navigation.

Cov khawm ntawm thaj tsam ntawm no yog cov Zoo / Yoojyim, RGBCMY (xim saib ntawv rau cov ntawv qhia zaub mov), Sawv siab , Tus neeg siv qhov chaw, Kev nco, 2D / 3D, Txawv (qhia cov qauv ntawm cov qauv ntsuas), thiab AV Mute (mute ob daim duab thiab lub suab ).

Thaum kawg, nyob rau hauv qab yog muab ntawm lwm tus siv rau Epson Wireless HDMI switcher, tiam sis tsis haumxeeb ntawm qhov project no.

Rau kev sampling ntawm onscreen menus, sim mus rau cov pab pawg hauv cov duab no ...

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Cov Chaw Luam Ntawv Ntawm Cov Zauv

Epson PowerLite Tsev Xinesmas 3500 video projector - Cov Chaw Luam Ntawv Ntawm Chaw. Yees duab © Robert Silva - tso rau hauv.com

Pom tau tias nyob hauv daim duab no yog Qhov Chaw Saib Ntawv Duab.

1. Hom Xim: Ib qho xim ntawm preset xim, qhov sib txawv, thiab qhov chaw ci: Nws pib (nws pib nqis raws li chav teeb pom kev zoo), Xinesmas (saib cov yeeb yaj duab hauv chav tsaus nti), Dynamic (thaum muaj lub siab siab xav) Ntuj, 3D Dynamic (boosts brightness thaum saib 3D nyob rau hauv ib chav tsev nrog ib lub teeb ci ntsa iab), 3D Xinesmas (teeb pom kev zoo rau saib 3D hauv chav tsaus ntuj).

2. Brightness: Kev Taw Kev Tawm Sawv los ua kom cov duab zoo dua los sis tsaus nti.

3. Kev Contrast: Manually hloov cov theem tsaus ua teeb.

4. Xim Saturation: Muab qhov chaw ntawm lub teeb ntawm tag nrho cov xim ua ke.

5. Cim: Kho cov nqi ntsuab thiab magenta hauv daim duab.

6. Daim tawv Tone: Ntsuas cov xim ntsuab thiab xim liab kom zoo dua qub kom zoo dua qub.

7. Ua ntsej muag: Txhim kho cov teeb meem ntawm ntug txhais hauv daim duab. Qhov chaw no yuav tsum tau siv sparingly li nws tuaj yeem tso saib cov khoom artifacts.

8. Cov Kub Xim: Muab cov kev kho kom haum ntawm Kev Ntsaws Xwb (xim liab sab nraud - sab nraud zoo) lossis Blueness (ntau xiav - zoo zoo nkauj) ntawm daim duab.

9. Kev Txhim Kho: Kev xaiv qhov kev xaiv no yuav siv tus neeg siv rau lub submenu uas tso cai ntau dua ntawm cov xim uas tso cai rau kom muaj xim lossis xim zuj zus ntawm txhua xim (Liab, Ntsuab, Xiav lossis Liab, Ntsuab, Ntsuab, Xiav, Cyan, Magenta, Daj).

9. Kev Siv Tau: Qhov kev xaiv no tso cai rau kev tswj teeb ntawm lub teeb teeb. Qee zaus muab ib cov duab zoo nkauj uas tsim nyog rau 3D saib lossis saib thaum muaj qee qhov teeb meem me me. ECO hom txo lub teeb tso zis los ntawm lub teeb, tiam sis nws kaj txaus rau feem ntau hauv tsev ua yeeb yam saib hauv chav tsaus ntuj. Qhov chaw ECO kuj txuag hluav taws xob thiab txuas lub neej teeb meem.

10. Pib Iris: Txiav adjusts projector lub teeb zis raws li lub ci ci ntawm daim duab.

12. Pib dua: Cancels tag nrho cov neeg siv ua duab chaw.

Taug kev mus rau tom ntej yees duab ...

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Cov Ntawv Tshaj Tawm Xov Xwm Tshaj Tawm

Epson PowerLite Tsev Xinesmas 3500 video projector - Teeb Meem Chaw Xov Xwm. Yees duab © Robert Silva - tso rau hauv.com

Ntawm no yog saib ntawm Cov Ntawv Tshaj Tawm Xov Teeb rau Epson PowerLite Home Cinema 3500 video projector:

1. Kev Tawm Duab Tshiab : Mus rau ib qho submenu uas muab cov kev xaiv hauv qab no -

3D Zaub - Hloov 3D zaub ua haujlwm lossis tawm. Nkag mus rau qhov kev ua ntawm 2D / 3D khawm ntawm cov chaw taws teeb tswj kuj muaj.

3D Hom ntawv - Hauv qhov chaw pib, tus projector tau, feem ntau, xyuas txog cov qauv 3D hom teeb meem. Txawm li cas los xij, yog tias qhov 3D teeb liab tsis tuaj yeem kuaj tau, koj tuaj yeem xaiv 2D (ib txwm qhia txog 2D duab, txawm nrog 3D qhov chaw), Sab-ntawm-Sab (cov 3D teeb liab tau tso duab sab laug thiab sab xis pom tshwm ntawm sab nraud ), thiab sab saum toj thiab hauv qab (cov zauv hauv 3D muaj cov duab sab laug thiab sab xis tso rau saum thiab hauv qab).

3D Qhov - Ntsuas qhov kawm ntawm 3D tob xav.

Kab Ntsig Screen Qhov Coj - Qhov no tso cai rau koj qhia rau lub projector seb qhov tshuaj ntsuam koj tau siv pes tsawg. Ua li qhov no yuav pab kom qhov kev ua kom pom tau qhov tso siab tau 3D, xws li txo qeeb (croesting, hlais, los).

3D Brightness - Hais ci ci ntawm 3D dluab. Ceeb toom: Tus projector tseem muab cov khoom ci tawm tshiab / sib npaug zos thaum pom cov duab 3D.

Yam Ntxim Saib Ntxim Hlub 3D: - Qhov chaw no thim qhov 3D glasses LCD shutter ib theem zuj zus yog tias 3D dluab yog incorrectly tso tawm kom pom nrog cov tom qab nyob hauv pem hauv ntej ntawm lub foreground. Rov qab muaj nuj nqi rov qab ua yuam kev kom qhov dav hlau 3D tshwm li cas.

3D Daim Ntawv Ceeb Toom - Tshem tawm cov kev ceeb toom 3D thiab kev ceeb toom txog kev tawm thiab tawm thaum pom 3D dluab.

2. Nam Piv Txwv: Tso cai rau qhov chaw ntawm lub projector nam piv. Cov kev xaiv no yog:

Qee - Poob ntawm qhov sib piv thiab duab loj rau cov duab hauv PC.

16: 9 - Hloov txhua qhov khoom xa tawm mus rau 16: 9 nam piv. Tuaj 4: 3 dluab yog stretched.

Tag nrho - Tag nrho cov dluab xa tuaj yog kho kom tiav qhov kev tshuaj ntsuam, tsis hais txog ntawm txoj kev piv ntawm cov teeb liab. 4: 3 cov teeb tseg ncab horizontally thiab 1.85: 1 thiab 2.35: 1 cov ntawv taw qhia yog ncab vam khom.

Haiv neeg - Qhia tag nrho cov duab uas tsis muaj kev hloov piv txwv.

3. Cov Chaw Cuam Tshuam cov duab ntawm qhov screen siv nce, nqis, sab laug, thiab txoj kev kho. Qhov tseem ceeb tshaj plaws rau kev siv computer.

4. Txuas kev sib txuas: Kev tuav ntawm kev sib tsoo ntawm Interlaced Scan thiab Kev Luam Hlob .

5. Super Resolution: Adjusts kom meej meej rau daim duab.

6. Tshaj Lij: Siv ib qho submenu nrog rau cov kev xaiv nram qab no: Tshem Tawm Tsam Nruab Nrab (txo cov suab nrov hauv duab - tab sis tseem tuaj yeem muag cov duab), Teeb qib (nplua tunes cov theem dub), Overscan (kho dua sab nraum cov ciam teb ntawm cov duab), HDMI video ntau yam (qhov sib txawv ntawm cov xim ntawm lub projector mus rau HDMI input source), Image Processing (Yoo tso tus projector mus tso saib duab cuam tshuam - tab sis txo cov duab zoo, Txhawb kom zoo dua cov lus teb kom sai).

7. Pib dua: Pauv cov nqis saum toj no mus rau Hoobkas nqis.

Taug kev mus rau tom ntej yees duab ...

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Epson PowerLite Tsev Xinesmas 3500 Video Projector - Info Ntawv qhia

Epson PowerLite Tsev Xinesmas 3500 video projector - Ntawv qhia zaub mov. Yees duab © Robert Silva - tso rau hauv.com

Tshaj tawm hauv qhov kawg ntawm Epson 3500's ntawm qhov screen tshuab raj yog saib ntawm Cov Ntawv Qhia Xov Xwm. Qhov no yog cov ntawv qhia qhia rau tus neeg siv lub sijhawm siv lub teeb, cov lus qhia txog cov khoom siv tam sim no uas tau pom, thiab cov lus qhia ntxiv.

1. Cov Sij Hawm Teeb: Qhia txog tus naj npawb ntawm cov leb siv. Qhov ntsuas yuav qhia 0 teev txog 10 teev dhau los. Raws li koj tau pom, thaum lub sijhawm no tau yees duab, 52 Lamp Hours tau siv lawm.

2. Tau qhov twg los: Qhov no qhia tau hais tias cov lus tawm tswv yim tam sim no yog leej twg nkag thiab saib. Cov tswv yim kev xaiv muaj xws li: HDMI 1, HDMI 2 , Component , PC , Video .

3. Cov Lus Teeb Tseg: Qhia tau tias hom kev yees duab teeb liab tau pom dab tsi. Hauv qhov no nws yog Cheebtsam (tsis yog yuav tsum totaub nrog kev tivthaiv video txuas - qhov kev tivthaiv no yog hais txog tus qauv xim uas tau los ntawm lub hauv paus).

4. Kev daws teeb meem: Qhia txog cov teeb meem pixel ntawm lub teeb liab. Hauv qhov no, qhov pixel daws teebmeem ntawm cov duab teebmeem hauv cov duab no yog 1080p.

5. Scan Mode: Tshaj tawm seb qhov teeb liab tau txais yog Interlaced los yog Progressive .

6. Kev Ntsig Hloov Ntxiv: Muab cov ntaub ntawv qhia txog qhov kev hloov tshiab ntawm lub teeb tawm khoom. Nws tseem ceeb heev uas yuav tsum nco ntsoov tias 60.05Hz yog tus lej tseeb - hauv kev xyaum, qhov no yog hu ua 60Hz refresh rate.

7. 3D Hom Ntawv: Qhia txog cov qauv 3D tuaj kuaj. Raws li koj tuaj yeem pom ntawm no, tsis muaj cov teeb liab 3D tam sim no.

8. Sync Info: Displays video teeb liab / projector synch txhawb cov ntsiab lus.

9. Deep Color: Displays qhov tob xim qhov tob ntawm cov ntaub ntawv los ntawm HDMI. Kev sib sib zog nqus xim tsis niaj zaus tuaj, xws li hauv qhov no.

10. Raws li txoj cai: Qhia txog cov lus qhia yuam kev.

11. Cov Zauv Nruab Nrab: Tus lej ntawm cov duab.

12. Vev Xaib: Qhov no tso saib dab tsi firmware version tam sim no ntsia.

13. Kev tshwm sim ID: Qhia txog tus lej xov tooj sib thooj rau qhov yuam kev teeb meem, yog tias muaj. Yog hais tias lub projector khiav hauj lwm txhua zaus, qhov no yuav tsum tsis muaj dab tsi.

Ntxiv rau hauv Epson PowerLite Home Cinema 3500

Lub Epson PowerLite Tsev Xinesmas 3500, ntawd cov nta thiab kev sib txuas tau muaj ntau txoj haujlwm yooj yim. Tsis tas li ntawd, nrog nws cov zis lub teeb tawm, qhov kev lag luam no tuaj yeem pom nyob rau hauv tej chaw uas yuav muaj qee qhov teeb meem ntawm qhov teeb meem me me los yog qhov ntawd tsis tuaj yeem tsaus, thiab yog tus neeg tuaj yeem siv rau sab nraum zoov (hmo ntuj, tau kawg).

Rau cov lus qhia ntxiv thiab kev pom zoo ntawm Epson PowerLite Tsev Xinesmas 3500 cov nta thiab kev ua haujlwm, tseem tshawb xyuas txog kuv Cov Kev Ntsuam Xyuas thiab Kev Ua Yeeb Yam Teeb Meem .

Tshawb xyuas cov nqi