{"id":13153,"date":"2022-06-19T22:43:00","date_gmt":"2022-06-19T14:43:00","guid":{"rendered":"https:\/\/rewa.tech\/macbook-a2337-touchpad-and-keyboard-function-failure-repair\/"},"modified":"2024-05-10T14:46:13","modified_gmt":"2024-05-10T06:46:13","slug":"macbook-a2337-touchpad-and-keyboard-function-failure-repair","status":"publish","type":"post","link":"https:\/\/rewa.tech\/fr\/macbook-a2337-touchpad-and-keyboard-function-failure-repair\/","title":{"rendered":"MacBook A2337 - R\u00e9paration de la d\u00e9faillance du clavier et du pav\u00e9 tactile"},"content":{"rendered":"<p>MacBook A2337 - R\u00e9paration de la d\u00e9faillance du clavier et du pav\u00e9 tactile<\/p>\n<\/p>\n<h2>Ph\u00e9nom\u00e8ne de d\u00e9faut<\/h2>\n<p>Le MacBook Air 2020 A2337 fonctionne normalement, mais le deuxi\u00e8me jour, la barre tactile et le bouton d'accueil ne fonctionnent plus.<\/p>\n<\/p>\n<h2>D\u00e9pannage<\/h2>\n<p>En d\u00e9montant le t\u00e9l\u00e9phone, on trouve le connecteur du c\u00e2ble flexible de la barre tactile avec quelques probl\u00e8mes<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/01__The_little_board_with_some_problem.png\" alt=\"\" title=\"\"><\/p>\n<\/p>\n<p>Une partie de la boucle du connecteur est manquante<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/02__Part_of_the_buckle_on_the_connector_is_missing.png\" width=\"598\" height=\"578\" alt=\"\" title=\"\"><\/p>\n<\/p>\n<p>Remettre une boucle sous le microscope avec pr\u00e9caution<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/03__buckle_replacement.png\" alt=\"\" title=\"\"><\/p>\n<\/p>\n<p>Apr\u00e8s cela, testez \u00e0 nouveau. La barre tactile et les fonctions du clavier ne fonctionnent toujours pas. Le probl\u00e8me devrait venir de la carte m\u00e8re<\/p>\n<\/p>\n<p>Retirez la carte m\u00e8re et mesurez la valeur de la diode sur le connecteur IPD B2B JT400#.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/04__IPD_B2B.png\" alt=\"\" title=\"\"><\/p>\n<\/p>\n<p>Toutes les valeurs des diodes sont correctes.&nbsp;<\/p>\n<p>Ensuite, il se connecte \u00e0 l'alimentation en courant continu et mesure les valeurs de tension. Apr\u00e8s la mesure, nous constatons que la broche 29# (<span style=\"font-family: 'Courier New'; font-size: 13.44pt;\">PP5V_S2_IPD_F<\/span>) est anormale.&nbsp;<\/p>\n<\/p>\n<p>En suivant le sch\u00e9ma, nous constatons que la tension de 5V est fournie par l'UC840.<\/p>\n<p>Les conditions de fonctionnement de base de l'UC840, y compris l'alimentation et la validation, sont les suivantes<\/p>\n<ul style=\"list-style-type: disc;\">\n<li><span style=\"font-size: 13.44pt; font-family: 'Courier New';\">PP5V_S2<\/span><\/li>\n<li><span style=\"font-family: 'Courier New'; font-size: 13.44pt;\">P5V_S2SW_IPD_EN<\/span><span style=\"font-family: 'Courier New'; font-size: 13.44pt;\"><\/span><\/li>\n<\/ul>\n<div>Apr\u00e8s la mesure, la tension de 5V (PP5V_S2) est correcte. Cependant, <span style=\"color: #ff6600;\">le signal ENABLE (P5V_S2SW_IPD_EN) n'est pas OK.<\/span> La valeur de la tension sur ce rail devrait \u00eatre de 1,8V, mais il n'y a pas de tension.<span style=\"font-size: 13.44pt; font-family: 'Courier New';\"><\/span><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/05__The_enable_and_power.png\" width=\"1400\" height=\"657\" alt=\"\" title=\"\"><\/div>\n<div><span style=\"font-size: 13.44pt; font-family: 'Courier New';\">&nbsp;<\/span><\/div>\n<p>Nous devons donc continuer \u00e0 suivre le signal de validation, apr\u00e8s avoir cherch\u00e9 dans le sch\u00e9ma. Le signal est \u00e9mis par la puce UC870<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/06__UC870.png\" alt=\"\" title=\"\"><\/p>\n<p>Mesurer les conditions de travail de base de l'UC870,<\/p>\n<ul>\n<li><span style=\"font-size: 13.44pt; font-family: 'Courier New';\">P5VS2_PWR_EN<\/span><\/li>\n<li>\n<div><span style=\"font-size: 13.44pt; font-family: 'Courier New';\">IPD_PWR_EN&nbsp;<\/span><\/div>\n<\/li>\n<\/ul>\n<p><span style=\"font-size: 13.44pt; font-family: 'Courier New';\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/07__UC870_working_conditions.png\" alt=\"\" title=\"\"><\/span><\/p>\n<p>Toutes les valeurs sont correctes.<span style=\"font-size: 13.44pt; font-family: 'Courier New';\"><\/span><\/p>\n<\/p>\n<p>Il y a donc de fortes chances que le probl\u00e8me du touchpad et du clavier soit d\u00fb \u00e0 un endommagement de l'UC870.<\/p>\n<\/p>\n<p>Trouvez cette puce sur la carte m\u00e8re et remplacez-la par une nouvelle.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/09__A2337_Touch_Pad_and.png\" alt=\"\" title=\"\"><\/p>\n<\/p>\n<p>Apr\u00e8s avoir remplac\u00e9 et mesur\u00e9 \u00e0 nouveau la valeur de la tension sur la puce UC840,&nbsp;<span style=\"color: #000000;\">la valeur de la tension du signal ENABLE (P5V_S2SW_IPD_EN) est revenue \u00e0 la normale.<\/span><\/p>\n<p><span style=\"color: #000000;\">Assemblez ensuite le MacBook et testez \u00e0 nouveau, la barre tactile et le clavier fonctionnent \u00e0 nouveau normalement.<\/span><\/p>\n<p><span style=\"color: #000000;\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/10__the_voltage_on_EN_is_OK.png\" alt=\"A2337\" width=\"794\" height=\"382\" title=\"\"><\/span><\/p>\n<p><span style=\"color: #000000;\"><\/span><\/p>\n<h2><span style=\"color: #000000;\">R\u00e9sum\u00e9<\/span><\/h2>\n<p><span style=\"color: #000000;\">Le remplacement de l'UC870 (IPD_PWR_EN Gating Logic) a permis de r\u00e9soudre le probl\u00e8me de dysfonctionnement du touchpad et du clavier de l'A2337.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/MacBook_A2337_Touchpad_and_Keyboard_Function_Failure_Repair.png\" alt=\"MacBook A2337 - R\u00e9paration de la d\u00e9faillance du clavier et du pav\u00e9 tactile\" width=\"595\" height=\"581\" title=\"\"><\/p>\n<\/p>\n<p>&gt;&gt; Adh\u00e9rer <a href=\"https:\/\/academy.rewa.tech\/\">Acad\u00e9mie REWA<\/a> pour mettre en lumi\u00e8re vos comp\u00e9tences en mati\u00e8re de r\u00e9paration !<\/p>","protected":false},"excerpt":{"rendered":"<p>MacBook A2337 Touchpad and Keyboard Function Failure Repair Defect Phenomenon The MacBook Air 2020 A2337 works normally, but on the second day, the touch bar and home button functions both failed. Troubleshooting Disassemble the phone and we find the flex cable connector of the touch bar with some problems A part of the buckle on [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":13154,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[782],"tags":[],"class_list":["post-13153","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-macbook-repair-case"],"_links":{"self":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/13153","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=13153"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/posts\/13153\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media\/13154"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/media?parent=13153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/categories?post=13153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/fr\/wp-json\/wp\/v2\/tags?post=13153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}