close
iPhone/iPad/iPod 維修與培訓咨詢 (Line):cartinghao
各位好,我是台灣黑手,黑手的黑,黑手的手,今天講的是一台,客戶平板故障,送回直營店,結果原本是好的,現在直接廢掉,原廠或授權中心的說法永遠就是.......換機就對了啦!這也不能怪他們,因為他們也真的只能換機,難不成他還會修-_-(想太多了)
客戶大約有畫了一張圖給我說,按壓某個位置會重啟,但其實平板一直在重啟,所以我也沒什麼機會去壓,我大概按照客戶畫的圖,用尺標記了一下位置,並且看了一下 PCB ,那個位置其實沒什麼東西
我透過軟體輸出了系統的 LOG ,發現它居然同時存在二個不同的故障?
兩個都是 CPU 0 的異常,其中有
"panicString" : "panic(cpu 0 caller 0xfffffff00f25b540): \"AMCC Error! AMCC_IRERRDBG_INTSTS=0x1000000, MCCTAGPARLOG1\/2=0\/0, MCCDATERRLOG=0, MCCAFERRLOG[0..2]=0xfffff000\/0x1f140f\/0xa044, RNKCFG[0..3]=0x6011\/0x6011\/0x6011\/0x6011\"@\/AppleInternal\/BuildRoot\/Library\/Caches\/com.apple.xbs\/Sources\/AppleT8010\/AppleT8010-63.0.1\/AppleT8010PlatformErrorHandler.cpp:269\nDebugger message: panic\nMemory ID: 0x1\nOS version: 17E262\nKernel version: Darwin Kernel Version 19.4.0: Mon Feb 24 22:04:30 PST 2020; root:xnu-6153.102.3~1\/RELEASE_ARM64_T8011\nKernelCache UUID: B37CD625344BF0F58A9ED81683256A4F\nKernel UUID: 75107F27-0F68-3609-8633-282D854A99CA\niBoot version: iBoot-5540.102.4\nsecure boot?: YES\nPaniclog version: 13\nKernel slide: 0x0000000008508000\nKernel text base: 0xfffffff00f50c000\nmach_absolute_time: 0x28c9f7f9\nEpoch Time: sec usec\n Boot : 0x5eb55ed3 0x00039bee\n Sleep : 0x00000000 0x00000000\n Wake : 0x00000000 0x00000000\n Calendar: 0x5eb55ee8 0x0000b283\n\nPanicked task 0xffffffe000a3c800: 8461 pages, 248 threads: pid 0: kernel_task\nPanicked thread: 0xffffffe000a6da68, backtrace: 0xffffffe06b2df8a0, tid: 102\n\t\t lr: 0xfffffff00f642084 fp: 0xffffffe06b2df8e0\n\t\t lr: 0xfffffff00f641ee0 fp: 0xffffffe06b2df950\n\t\t lr: 0xfffffff00f7407dc fp: 0xffffffe06b2dfa00\n\t\t lr: 0xfffffff00f60562c fp: 0xffffffe06b2dfa10\n\t\t lr: 0xfffffff00f641848 fp: 0xffffffe06b2dfd80\n\t\t lr: 0xfffffff00f641ba0 fp: 0xffffffe06b2dfdd0\n\t\t lr: 0xfffffff00fbf0208 fp: 0xffffffe06b2dfdf0\n\t\t lr: 0xfffffff00f25b540 fp: 0xffffffe06b2dfe60\n\t\t lr: 0xfffffff00f2577a8 fp: 0xffffffe06b2dff20\n\t\t lr: 0xfffffff00ef1a6c8 fp: 0xffffffe06b2dffb0\n\t\t lr: 0xfffffff00fb8f3bc fp: 0xffffffe06b2dffc0\n\t\t lr: 0xfffffff00f7413b4 fp: 0xffffffe06b2dffe0\n\t\t lr: 0xfffffff00f60567c fp: 0xffffffe06b2dfff0\n\t\t lr: 0xfffffff00f661ca8 fp: 0xffffffe070873c70\n\t\t lr: 0xfffffff00f661ed8 fp: 0xffffffe070873c90\n\t\t lr: 0xfffffff00f610654 fp: 0x0000000000000000\n\n", |
與
"panicString" : "panic(cpu 0 caller 0xfffffff018d340c8): \"Fatal Coherency Point Error! CP_COM_NORM_REQUEST=0x2 Captured state=0xffffffe000f41000 CP CCU0 PIO Response Error: ADDR=0x80 INFO=0x10a0442c: STATUS\/TID\/ID\/CMD=0x1\/0xa0\/0x44\/0x2c(NCRdIncrRsp-RO)\n\"@\/AppleInternal\/BuildRoot\/Library\/Caches\/com.apple.xbs\/Sources\/AppleT8010\/AppleT8010-63.0.1\/AppleT8010PlatformErrorHandler.cpp:576\nDebugger message: panic\nMemory ID: 0x1\nOS version: 17E262\nKernel version: Darwin Kernel Version 19.4.0: Mon Feb 24 22:04:30 PST 2020; root:xnu-6153.102.3~1\/RELEASE_ARM64_T8011\nKernelCache UUID: B37CD625344BF0F58A9ED81683256A4F\nKernel UUID: 75107F27-0F68-3609-8633-282D854A99CA\niBoot version: iBoot-5540.102.4\nsecure boot?: YES\nPaniclog version: 13\nKernel slide: 0x0000000011fe4000\nKernel text base: 0xfffffff018fe8000\nmach_absolute_time: 0x531f4de2\nEpoch Time: sec usec\n Boot : 0x5eb55ef2 0x00095f06\n Sleep : 0x00000000 0x00000000\n Wake : 0x00000000 0x00000000\n Calendar: 0x5eb55f24 0x000d7fc6\n\nPanicked task 0xffffffe000a0f000: 9471 pages, 248 threads: pid 0: kernel_task\nPanicked thread: 0xffffffe000a424f8, backtrace: 0xffffffe06a7cf880, tid: 102\n\t\t lr: 0xfffffff01911e084 fp: 0xffffffe06a7cf8c0\n\t\t lr: 0xfffffff01911dee0 fp: 0xffffffe06a7cf930\n\t\t lr: 0xfffffff01921c7dc fp: 0xffffffe06a7cf9e0\n\t\t lr: 0xfffffff0190e162c fp: 0xffffffe06a7cf9f0\n\t\t lr: 0xfffffff01911d848 fp: 0xffffffe06a7cfd60\n\t\t lr: 0xfffffff01911dba0 fp: 0xffffffe06a7cfdb0\n\t\t lr: 0xfffffff0196cc208 fp: 0xffffffe06a7cfdd0\n\t\t lr: 0xfffffff018d340c8 fp: 0xffffffe06a7cff20\n\t\t lr: 0xfffffff0189f66c8 fp: 0xffffffe06a7cffb0\n\t\t lr: 0xfffffff01966b3bc fp: 0xffffffe06a7cffc0\n\t\t lr: 0xfffffff01921d3b4 fp: 0xffffffe06a7cffe0\n\t\t lr: 0xfffffff0190e167c fp: 0xffffffe06a7cfff0\n\t\t lr: 0xfffffff01913dca8 fp: 0xffffffe06a273c70\n\t\t lr: 0xfffffff01913ded8 fp: 0xffffffe06a273c90\n\t\t lr: 0xfffffff0190ec654 fp: 0x0000000000000000\n\n", |
這兩個 LOG 數據看來,完全是不太相關的問題,若要說到相關,那肯定不是信號類的,因為這兩種的信號天差地遠,那就絕對是粗線供電了,先上加熱板 80 度拆卸
這裡距離處理器與記憶體,要近不近,要遠不遠,保險起見,用神塔散熱,用 898D 中風口 380 度,最大風速將 BUCK 電路全部取下
更換低溫錫後,再全部更換新品,採用並聯方式
最後熱機 13 小時沒有重啟,收工~~自己動手,豐衣足食!
文章標籤
全站熱搜
留言列表