{"id":12886,"date":"2021-06-29T01:21:00","date_gmt":"2021-06-28T17:21:00","guid":{"rendered":"https:\/\/rewa.tech\/iphone-x-cannot-be-turned-on\/"},"modified":"2024-05-10T15:25:17","modified_gmt":"2024-05-10T07:25:17","slug":"impossible-dallumer-liphone-x","status":"publish","type":"post","link":"https:\/\/rewa.tech\/fr\/iphone-x-cannot-be-turned-on\/","title":{"rendered":"Impossible d'allumer l'iPhone X"},"content":{"rendered":"

Ph\u00e9nom\u00e8ne de dysfonctionnement<\/span><\/b><\/p>\n

<\/span><\/b><\/p>\n

Appuyez sur le bouton d'alimentation pour allumer l'iPhone X, mais celui-ci ne peut pas \u00eatre allum\u00e9.<\/span><\/p>\n

<\/span><\/span><\/p>\n

\"Impossible<\/span><\/p>\n

<\/span><\/p>\n

D\u00e9pannage<\/span><\/b><\/p>\n

<\/span><\/b><\/p>\n

D\u00e9montez le t\u00e9l\u00e9phone et retirez l'\u00e9cran, puis branchez le c\u00e2ble d'alimentation en courant continu. L'amp\u00e8rem\u00e8tre affiche un courant de 50MA, ce qui est anormal. <\/span><\/p>\n

<\/span><\/p>\n

S\u00e9parer ensuite la couche sup\u00e9rieure et la couche inf\u00e9rieure de la carte m\u00e8re, puis relier les deux couches de la carte m\u00e8re \u00e0 l'aide d'un dispositif de test i.<\/span>S<\/span><\/span>Apr\u00e8s avoir v\u00e9rifi\u00e9 le courant \u00e0 l'aide d'une machine d'alimentation en courant continu, la lecture est toujours de 50MA. Cela signifie que la fuite de courant n'est pas due \u00e0 la connexion entre les deux couches des cartes m\u00e8res.<\/span><\/span><\/span><\/p>\n

\"Impossible<\/span><\/p>\n

<\/span><\/p>\n

En continuant \u00e0 mesurer la tension et la valeur de la diode sur la couche sup\u00e9rieure, nous avons constat\u00e9 que la tension sur C2771 et C2770 \u00e9tait de 0, mais que la valeur de la diode \u00e9tait normale. <\/span><\/span><\/p>\n

\"\"  \"\"<\/span><\/p>\n

<\/span><\/p>\n

Selon le sch\u00e9ma du circuit, la tension est \u00e9mise par les broches W16, W17 et W18 de l'U2700 (PMU), puis transmise \u00e0 l'unit\u00e9 centrale par l'interm\u00e9diaire de L2770.  <\/span><\/span><\/p>\n

\"\"<\/span><\/p>\n

Essayer de remplacer un autre inducteur L2770, allumer la carte m\u00e8re, et v\u00e9rifier la tension \u00e0 nouveau, la tension est revenue \u00e0 la normale.<\/span><\/span><\/p>\n

<\/span><\/p>\n

Apr\u00e8s avoir remplac\u00e9 l'inducteur, ressoud\u00e9 la couche sup\u00e9rieure et la couche inf\u00e9rieure, assembl\u00e9 toutes les pi\u00e8ces et test\u00e9 \u00e0 nouveau, le t\u00e9l\u00e9phone peut \u00eatre allum\u00e9 normalement, le probl\u00e8me est r\u00e9solu.<\/span><\/p>\n

<\/span><\/p>\n

\"\"<\/span><\/p>\n

<\/span><\/p>\n

Cas de r\u00e9paration de la carte m\u00e8re de l'iPhone X<\/span><\/span><\/u><\/b><\/a><\/p>\n

<\/span><\/p>\n

<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Malfunction Phenomenon Press the power button to power on, the iPhone X cannot be turned on. Trouble Shooting Disassemble the phone and remove the display assembly, then connected to the DC power supply cable, the current reading on the ammeter is 50MA, which is abnormal. Then separate the top layer and the bottom layer of […]<\/p>\n","protected":false},"author":10,"featured_media":12887,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[780],"tags":[],"class_list":["post-12886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iphone-repair-cases"],"_links":{"self":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/12886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/comments?post=12886"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/12886\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media\/12887"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media?parent=12886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/categories?post=12886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/tags?post=12886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}