DVD Player: Piav Qhia Tshooj thiab Dab Tsi Tsim Nyog Tau Txais: 9 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26

Hnub no peb yuav tshuaj xyuas tus DVD player qub no. Nws tsis ua haujlwm zoo yog li kuv txiav txim siab qhib nws thiab pom dab tsi sab hauv. Qhov teeb meem yog tias nws tau qhib tas li thiab kaw tas li thiab nws tsis xav nyeem los ntawm lub disc. Kuv yuav piav qhia lub hauv paus ntawm txoj cai ua haujlwm ntawm DVD player no thiab dab tsi tsim nyog khaws los ntawm nws.

CEEB TOOM: Lub hwj huam tau txuas nrog lub hauv paus; nws muaj lub tshuab hluav taws xob uas tuaj yeem nyob them txawm tias tom qab koj txuas nws los ntawm lub zog loj; Kuv tsis yog lub luag haujlwm rau kev puas tsuaj uas koj ua.

Khoom siv

Kuv siv lub ntsuas ntsuas rau ntsuas thiab teeb cov ntsia hlau kom qhib thiab sib dhos nws thiab cov hlau txuas thiab lub tshuab nqus tsev nqus mus rau qhov chaw khaws cia.

Kauj Ruam 1: Qhib Rooj Plaub

Ua ntej yuav ua ib yam dab tsi kom ntseeg tau tias tus neeg uas ua ntawv raug txuas los ntawm lub hauv paus. Cov ntsia hlau tau muab tso rau ntawm ob sab thiab sab nraum qab ntawm lub DVD player. Tshem lawv. Tam sim no peb tuaj yeem pom dab tsi sab hauv DVD player no, peb tuaj yeem pom SMPS (Hloov Hom Lub Hwj Huam Fais Fab), lub tshuab nyeem ntawv, lub hauv paus tswj hwm hauv qab tus nyeem ntawv, txuas nrog SCART txuas thiab PCB rau pem hauv ntej nrog LED zaub thiab IR sensor. Thawj qhov uas peb yuav tsom mus rau yog lub zog siv.

Kauj Ruam 2: Lub Hwj Huam Fais Fab

Qhov SMPS no zoo heev thiab tsim nyog tau txais kev cawm. Nws tuaj yeem siv los txhawb ntau yam khoom siv niaj hnub no vim nws muaj +/- 12V, 5V thiab hauv av yog li koj tuaj yeem sib xyaw lawv thiab ntau dua li koj muaj 5V, 7V, 12V thiab 24V sib txawv hauv qhov muaj peev xwm. Kuv tsis paub lub zog twg tuaj yeem xa tawm tab sis nws zoo ib yam. Kuv tau tshuaj xyuas nws nrog kuv lub ntsuas cua thiab nws qhia tau 11 thiab -11 volts rau +/- 12V tab sis nws tuaj yeem zaum kho tau yooj yim heev. Kuv tau rov qab kho nws thiab kos cov phiaj xwm ntawm nws raws li koj tuaj yeem pom. Kuv tsuas yog tsis paub dab tsi yog qhov hloov pauv ntawm qhov hloov pauv thiab inductance ntawm tus inductor ntawm ob sab. Kev tsim qauv tsis phem thiab qhov nrug nruab nrab ntawm thawj thiab theem ob yog qhov zoo heev.

Qhov SMPS no yog lub hwj chim rau pawg tswj hwm tseem ceeb.

Txog SMPS

Kauj Ruam 3: Pawg Thawj Coj

Lub rooj tsavxwm pem hauv ntej muaj ntau ntu uas tsim nyog tau txais kev cawm. Muaj LED zaub, IR sensor, thawb khawm hloov thiab USB chaw nres nkoj. LED zaub tuaj yeem siv rau hauv ntau txoj haujlwm vim tias nws muaj 4 tus lej, cov nyuv thiab cov cim tshwj xeeb xws li DVD, CD, Pause, Play, MP3, MP4.

Cov ntu no tuaj yeem siv rau txhua yam haujlwm.

Kauj Ruam 4: SCART Connector

Qhov txuas 21-tus pin no tau siv dav rau txuas cov khoom siv suab-pom (AV). Koj tuaj yeem txuag nws thiab tej zaum siv nws yog tias piv txwv li SCART txuas ntawm koj lub TV tau tawg, tab sis nws tsis tsim nyog khaws cia.

Txog SCART txuas

Kauj Ruam 5: Disc Drive Mechanism

Thawj qhov koj yuav pom uas tsim nyog khaws cia yog DC txhuam lub cav. Hauv cov neeg uas ua ntawv no muaj 3 ntawm lawv. Ob ntawm lawv muaj cov txheej txheem txhawm rau txo RPM thiab hloov cov lus tsa suab tig mus rau hauv cov lus tsa suab. Nws tuaj yeem hloov kho rau tus tes cranked charger piv txwv thiab tsim nyog khaws cia. Kuj tseem muaj qee qhov hloov pauv uas nres lub cav thaum lub DVD player qhib ntawm nws qhov siab tshaj plaws.

Kauj Ruam 6: Cov Txheej Txheem Kho Qhov Muag

Cov tshuab thiab kho qhov muag tau teeb tsa ntawm kev sib haum xeeb ntawm cov hlau. Muaj lub cav uas tig lub disc thiab ib lub cav uas txav qhov muag. Kuj tseem muaj qhov hloov pauv uas tso tseg lub cav thaum kho qhov muag nyob ntawm qhov chaw tshaj plaws. Qhov ntawd tsim nyog khaws cia.

Tam sim no qhov muag pom: muaj chav kawm liab 1 laser diode uas tsim nyog khaws cia tab sis koj tsis tuaj yeem txuas nws ncaj qha rau lub zog siv, koj yuav tsum yog lossis ua tus txwv tam sim no. Muaj ntau qhov yooj yim schematics ntawm lawv hauv Is Taws Nem. Kuj tseem muaj IR (infra liab) lim iav uas nthuav rau ua si nrog tab sis kuv tsis paub tias nws tuaj yeem pab tau li cas.

Kuv npaj yuav ua kom tes tes cranked generator tawm ntawm cov txheej txheem rau kev kho qhov muag.

CEEB TOOM: Tsis txhob saib ncaj qha rau hauv laser, nws tuaj yeem ua rau koj lub qhov muag puas tsuaj thiab ua rau koj dig muag. Tsis txhob taw tes rau ntawm ib qho muaj sia nyob. Nws tuaj yeem ua rau kub hnyiab.

Kauj Ruam 7: Pawg Thawj Tswj Hwm

Nov yog lub hlwb ntawm DVD player. Nws ua txhua yam ntaub ntawv thiab xa thiab tau txais cov cim. Nws tau txuas ncaj qha nrog lub suab thiab tso tawm video. Tab sis tu siab, nws tsis muaj ntu uas tsim nyog khaws tshwj tsis yog cov txuas yog tias koj xav tau. Muaj qee qhov nti tso rau hauv lub qhov (socket) tab sis kuv tsis tau tswj kom nrhiav cov ntawv rau nws.

Qhov txaus siab yog tias hauv qab txhua qhov txuas muaj cov cim uas piav qhia txhua tus pin (+12V, +5V, GND, R, G, B, VCC, CLK …)

Kauj Ruam 8: Cov Chaw Taws Teeb

Nws yog qhov yooj yim tej thaj chaw deb kuv tau pom dua. Muaj nti hauv qab dub tshaj plaws, ib lub capacitor thiab tsis muaj dab tsi ntxiv. Kuv tsuas yog txuag IR LED los ntawm nws. Muaj tiag tiag tsis muaj dab tsi uas tuaj yeem khaws tau los ntawm nws tsuas yog IR LED.

Kauj Ruam 9: Ntsia Hlau thiab Casing

Tsis txhob hnov qab khaws cov ntsia hlau, lawv tuaj yeem cawm koj txoj sia! Okay tej zaum tsis yog, tab sis kuv nquag siv cov ntsia hlau uas kuv khaws los ntawm qee lub cuab yeej.

Lub casing ntawm DVD player tuaj yeem siv rau qee qhov phiaj xwm yav tom ntej, yog li koj tsis tas yuav yuav nws

Ntawd yog nws, tsis muaj ntu ntxiv. Kuv vam tias koj nyiam nws thiab koj tau kawm qee yam tshiab hnub no.

Zoo siab tso tawm lus, nug ib lo lus nug thiab tsis txhob hnov qab qhia thiab ua raws.

Koj tuaj yeem txhawb nqa kuv ntawm Patreon, nws yuav zoo.