Ch?o b?n, t?i l? K? S? Ph?n C?ng Tr??ng t?i Ph?ng Lab Ph?n T?ch & Ph?c H?i Vi M?ch VietITPro. Trong l?nh v?c s?a ch?a ph?n c?ng cao c?p c?a Apple, pan b?nh m?t ngu?n, ch?p ngu?n ho?c l?i IC qu?n l? n?ng l??ng (Power Management IC - PMIC) tr?n MacBook lu?n l? th? th?ch k? thu?t ph?c t?p nh?t. M?t chi?c MacBook Pro hay MacBook Air c?m s?c kh?ng b?o ??n, ?n d?ng 5V/0.00A ho?c n?ng r?c bo m?ch c? th? xu?t ph?t t? h?ng tr?m nguy?n nh?n vi m?: t? h?ng chip ?i?u khi?n c?ng Type-C CD3215/CD3217, ch?p t? g?m tr?n ???ng ngu?n ch?nh PPBUS_G3H, ch?t IC s?c ISL9239/ISL9240, cho ??n l?i ph?n lu?ng Buck Converter d?i ?p v?o CPU.

T?i VietITPro, ch?ng t?i kh?ng bao gi? "s?a m?" hay kh? h?n v? c?n c?. M?i ca b?nh ??u ???c ch?n ?o?n theo s? ?? nguy?n l? m?ch (Schematics & Boardview) ch?nh h?ng, ?o ??c tr? kh?ng cu?n c?m theo ch? ?? Diode Mode, soi camera nhi?t h?ng ngo?i v? x? l? ??ng chip BGA d??i k?nh hi?n vi quang h?c ?? ph?ng ??i l?n. B?i vi?t n?y t?i s? chia s? to?n b? ki?n th?c k? thu?t th?c chi?n v? h? th?ng ph?n ph?i ngu?n ?i?n c?a MacBook.

1. Ki?n Tr?c C?y Ngu?n (Power Distribution Tree) Tr?n Bo M?ch Ch? MacBook

Bo m?ch ch? MacBook (t? Intel T2 ??n Apple Silicon M1, M2, M3, M4) v?n h?nh d?a tr?n m?t c?u tr?c c?y ngu?n ph?n t?ng c?c k? nghi?m ng?t. Ngu?n ?i?n kh?ng ?i th?ng t? c? s?c v?o linh ki?n m? ph?i tr?i qua nhi?u t?ng bi?n ??i ?p v? ki?m tra logic an to?n.

COMMAND PROMPT / TERMINAL

+-----------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>S? ?? C?Y NGU?N MACBOOK TYPE-C / MAGSAFE 3</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+-----------------------------------------------------------------------------+

C?ng S?c Type-C / MagSafe 3 (C?p ?p ban ??u 5V)


v

[Chip CD3215 / CD3217 / TPS65988] <---> Giao ti?p USB-PD Controller

| (??m ph?n th?nh c?ng -> N?ng ?p l?n 20V / 28V)

v

???ng ngu?n ??u v?o: PPDCIN_G3H (20.0V)


v

[IC S?c ISL9239 / ISL9240 / ISL9241] + [Cu?n c?m Buck-Boost L]


+-----------------------------> ???ng ngu?n ch?nh: PPBUS_G3H (12.6V / 13.1V)


v +---> [M?ch Buck PP3V3_G3H] -> C?p ngu?n SMC/T2/PMU

[Kh?i Pin Lithium-ion] |

(S?c / X? t? ??ng) +---> [M?ch Buck PP5V_S5 / PP3V3_S5]


+---> [M?ch Buck VRM L?i CPU/GPU: 0.7V - 1.05V]

1.1. ???ng Ngu?n Ch?nh PPBUS_G3H: "X??ng S?ng" N?ng L??ng C?a To?n B? M?y

Kh?i ni?m: PPBUS_G3H (Power Primary Bus Generated 3 High) l? ???ng ?i?n ?p ch?nh nu?i to?n b? c?c m?ch h? ?p th? c?p tr?n bo m?ch ch?.
Gi? tr? ?i?n ?p chu?n:
Tr?n c?c d?ng MacBook Intel & MacBook Air M1/M2: 12.6V (khi kh?ng pin) ho?c t? 11.1V - 12.6V (khi c? pin).
Tr?n c?c d?ng MacBook Pro 16" Intel v? MacBook Pro 14"/16" M-Series: 13.1V.
Quy t?c ch?n ?o?n: N?u ???ng PPBUS_G3H b? m?t ?p (0V) ho?c b? s?t ?p (ch? c?n 1.2V - 3.8V), to?n b? c?c IC ngu?n ph? v? vi x? l? s? b? kh?a ho?n to?n.

1.2. ???ng Ngu?n Ph? C?p Tr??c PP3V3_G3H

?i?n ?p chu?n: 3.3V.
Vai tr?: Cung c?p n?ng l??ng cho chip ?i?u khi?n h? th?ng (SMC tr?n m?y Intel, chip b?o m?t Apple T2, ho?c Power Management Unit PMU tr?n Apple Silicon), chip BIOS SPI ROM v? c?c c?ng logic k?ch ngu?n. N?u m?t PP3V3_G3H, m?y ho?n to?n m?t t?n hi?u nh?n di?n s?c v? kh?ng th? k?ch ngu?n.

2. Ph?n T?ch C?m Chip ?i?u Khi?n S?c & Giao Ti?p Type-C: CD3215, CD3217 & ISL9240

Ph?n l?n c?c s? c? "c?m s?c kh?ng b?o g?" tr?n MacBook ??i m?i ??u b?t ngu?n t? c?m giao ti?p c?ng Type-C (Thunderbolt Controller).

COMMAND PROMPT / TERMINAL

+-----------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>C?C D?NG IC NGU?N & CONTROLLER PH? BI?N TR?N MACBOOK</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+---------------------+-----------------------+-------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>T?n Linh Ki?n</th><th class='px-4 py-3'>V? tr? / M? linh ki?n</th><th class='px-4 py-3'>Ch?c n?ng k? thu?t c?t l?i</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+---------------------+-----------------------+-------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>CD3215 / CD3217</th><th class='px-4 py-3'>U3100, U3200, UB300</th><th class='px-4 py-3'>USB-C Power Delivery Controller (5V->20V)</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>ISL9239 / ISL9240</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>U7000 (Intersil)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Buck-Boost Battery Charger / T?o PPBUS</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>TPS65988</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Texas Instruments</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Dual Port USB-C Controller th? h? m?i</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Apple PMU (M-chip)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>APL109X / 338S00780</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Qu?n l? ph?n ph?i ngu?n ?a k?nh SoC</td></tr></tbody></table></div>
+---------------------+-----------------------+-------------------------------------------+

2.1. Hi?n t??ng "K?t ngu?n 5V/0.00A" ho?c "5V/0.05A" do l?i CD3215 / CD3217

Khi b?n c?m c? s?c 61W/87W/96W/140W v?o MacBook, c? s?c ban ??u ch? c?p ra ?i?n ?p an to?n 5V.
Chip ?i?u khi?n c?ng Type-C (CD3215 ho?c CD3217) t?i c?ng ?? s? th?c d?y, t? k?ch ho?t 2 ngu?n n?i t?i LDO (Low Dropout): PP1V1_UPC_LDO (1.1V) v? PP3V3_UPC_LDO (3.3V).
Sau ??, chip n?y g?i g?i tin k? thu?t s? qua ???ng giao ti?p CC1 / CC2 (Configuration Channel) ??n c? s?c theo chu?n USB Power Delivery: "T?i l? MacBook, h?y n?ng ?i?n ?p l?n 20V (ho?c 28V ??i v?i chu?n EPR 140W)".
Pan b?nh th?c t?: C?c chip CD3215 ???c m?c n?i ti?p theo c?u tr?c Master-Slave (th??ng c? 2 ho?c 4 chip t??ng ?ng v?i 2 ho?c 4 c?ng Type-C). N?u ch? 1 trong 4 chip b? n?t ch?n ch?, r? r? ho?c ch?p ngu?n n?i b? LDO 1.1V, to?n b? v?ng l?p giao ti?p b? treo. H?u qu? l? m?y b? k?t c?ng ? m?c 5V v? ?n d?ng 0.00A ho?c 0.05A, kh?ng th? chuy?n ??i l?n 20V ?? s?c pin hay m? ngu?n.

2.2. IC S?c ISL9239 / ISL9240: Tr?i Tim Chuy?n ??i Buck-Boost

Nh?n ?i?n ?p 20V t? PPDCIN_G3H v? ?i?u khi?n 4 MOSFET c?ng su?t ngo?i (Q7030, Q7040, Q7065, Q7070) ?? b?m xung ?i?n t?, t?o ra ?i?n ?p PPBUS_G3H 12.6V ho?c s?c d?ng cao v?o kh?i pin.
N?u ISL9240 b? h?ng ch?n giao ti?p SMBUS_SMC_5_G3H_SCL / SDA k?t n?i v?i chip T2/SMC, n? s? r?i v?o tr?ng th?i Safe-Mode v? ch? xu?t ra ?i?n ?p c?p c?u ~12.2V nh?ng kh?ng m? d?ng t?i, m?y s? kh?ng th? kh?i ??ng.

3. M?ch Chuy?n ??i DC-DC Buck Converter & R?i Ro Th?ng High-Side MOSFET

M?t trong nh?ng nguy c? kinh ho?ng nh?t ??i v?i k? s? ph?n c?ng khi s?a m?ch ngu?n l? hi?n t??ng High-Side MOSFET b? ??nh th?ng.

Sơ Đồ Luồng Tín Hiệu

Tuyến Tín Hiệu

???ng ngu?n ch?nh PPBUS_G3H (12.6V) +

→

High-Side MOSFET (Chuy?n m?ch xung) +

→

?i?m giao c?t xung PWM: Phase Node

→

Cu?n c?m L

→

Ngu?n CPU (0.9V) +

→

Low-Side MOSFET (X? d?ng mass) T? l?c g?m GND GND GND

Nguy?n l?: M?ch Buck Converter bi?n ??i ?i?n ?p cao PPBUS_G3H (12.6V) th?nh ?i?n ?p si?u th?p nh?ng d?ng c?c l?n (0.7V - 1.05V, c??ng ?? d?ng ?i?n l?n t?i 40A - 80A) ?? c?p cho c?c nh?n CPU Core v? GPU Clusters.
R?i ro k? thu?t: High-Side MOSFET ph?i ??ng ng?t h?ng tr?m ng?n l?n m?i gi?y (t?n s? 300kHz - 1MHz). Khi linh ki?n n?y b? gi? c?i ho?c qu? nhi?t do b?i b?n, m?i n?i P-N b?n trong b? ??nh th?ng ho?n to?n (Short Circuit gi?a c?c Drain v? Source).
H?u qu?: ?i?n ?p 12.6V c?a PPBUS_G3H x?c th?ng tr?c ti?p qua cu?n c?m v? d?i th?ng v?o l?i vi x? l? SoC (v?n ch? ch?u ???c t?i ?a 1.2V). Tinh th? silicon b?n trong CPU b? thi?u r?i ch? trong v?i micro gi?y, g?y ch?t v?nh vi?n chip vi x? l?.

4. K? Thu?t ?o Tr? Kh?ng (Diode Mode) & B?m ?p Nhi?t H?c (Voltage Injection)

?? tr?nh l?m ch?t CPU khi s?a ngu?n, k? s? VietITPro lu?n tu?n th? nguy?n t?c ?o ki?m c?ch ly nghi?m ng?t tr??c khi c?p b?t k? ngu?n ?i?n n?o v?o bo m?ch.

COMMAND PROMPT / TERMINAL

+-----------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>B?NG TRA C?U TR? KH?NG CHU?N DIODE MODE TR?N BO M?CH MACBOOK</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+----------------------+--------------------+--------------------+------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>T?n ???ng Ngu?n</th><th class='px-4 py-3'>Tr? kh?ng Diode</th><th class='px-4 py-3'>Tr? kh?ng Ohm (?)</th><th class='px-4 py-3'>??nh gi? k? thu?t</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+----------------------+--------------------+--------------------+------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>PPBUS_G3H</th><th class='px-4 py-3'>0.400V - 0.520V</th><th class='px-4 py-3'>> 100 k?</th><th class='px-4 py-3'>N?u < 0.010V: Ch?p t?i</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>PP3V3_G3H</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>0.350V - 0.450V</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>> 50 k?</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>N?u < 0.050V: Ch?p PMU</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>PP1V8_S3 (RAM Power)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>0.250V - 0.350V</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>500? - 2 k?</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>B?nh th??ng</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>PPVDD_CPU_AWAKE (SoC)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>0.005V - 0.025V</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>1.5? - 5.0?</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Tr? kh?ng th?p t? nhi?n</td></tr></tbody></table></div>
+----------------------+--------------------+--------------------+------------------------+

4.1. K? Thu?t ?o Diode Mode B?ng ??ng H? V?n N?ng Fluke

K? s? chuy?n ??ng h? v? thang ?o Diode: Que ?? ti?p Mass (GND v? ??ng bo m?ch), que ?EN ch?m v?o t?ng ??u cu?n c?m L v? t? g?m l?c ngu?n.
L?u ? chuy?n m?n: Nhi?u th? thi?u kinh nghi?m khi ?o cu?n c?m ngu?n CPU th?y ??ng h? k?u "B?p" v? hi?n th? 2Ω li?n k?t lu?n l? "ch?p CPU". Th?c t?, c?c nh?n x? l? c?a Apple Silicon v? Intel ho?t ??ng ? ?i?n ?p d??i 1V d?ng cao n?n n?i tr? t? nhi?n c?a ch?ng r?t th?p (1.2Ω - 4.5Ω). ?i?m ph?n bi?t ch?p th?c s? l? khi tr? kh?ng r?t v? 0.000Ω v? que ?o Diode hi?n th? 0.000V.

4.2. K? Thu?t B?m D?ng (Voltage Injection) B?ng Camera Nhi?t H?ng Ngo?i

Khi ph?t hi?n ???ng PPBUS_G3H b? ch?m mass ho?n to?n (0Ω):

1. K? s? t?ch r?i kh?i pin v? c?ch ly c?p m?n h?nh, c?p trackpad.

2. S? d?ng b? ngu?n k? thu?t s? DC Precision Power Supply, ??t m?c ?p 1.0V (?? ??m b?o d? c? th?ng High-side MOSFET c?ng kh?ng l?m ch?y CPU) v? gi?i h?n d?ng ?i?n ? m?c 2.0A - 3.0A.

3. B?m ?i?n c?c d??ng v?o ???ng PPBUS_G3H, c?c ?m k?p mass chassis.

4. Quan s?t bo m?ch qua ?ng k?nh Camera Nhi?t H?ng Ngo?i (Flir / Seek Thermal Resolution cao). T? g?m MLCC ho?c IC driver b? n?t r? s?t b?n trong s? l?p t?c h?p th? d?ng ?i?n v? ph?t nhi?t c?c b? l?n t?i 75?C - 110?C, hi?n th? ?i?m s?ng r?c r? tr?n m?n h?nh ph?n t?ch nhi?t.

5. K? s? g?p b? t? ch?m, ?o l?i tr? kh?ng Diode mode kh?i ph?c v? 0.450V m?i ti?n h?nh c?p ngu?n th?t.

5. K? Thu?t Kh? H?n IC Ngu?n BGA / QFN D??i K?nh Hi?n Vi Quang H?c

Vi?c thay th? IC ngu?n tr?n bo m?ch ch? MacBook ??i h?i tay ngh? vi ph?u ph?n c?ng ??t ?? ch?nh x?c ??n t?ng micromet.

COMMAND PROMPT / TERMINAL

+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>QUY TR?NH THAY TH? IC NGU?N BGA CHU?N PH?NG LAB VIETITPRO</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>[B??c 1] Gia nhi?t ??y bo m?ch (Pre-heater 150?C) ch?ng cong v?nh PCB</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 2] B?i m? h?n tr? dung Amtech NC-559-V2-TF & B?c gi?y b?c c?ch nhi?t chip l?n c?n</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 3] Kh? nhi?t 360?C - 380?C nh?c IC ngu?n h?ng b?ng nh?p Titanium vi ph?u</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 4] D?n s?ch ch? c? tr?n Pad m?ch b?ng b?c h?t Goot Wick m? ch?t tr? h?n</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 5] ?? ch?n ch? vi m? (Reballing) cho IC m?i b?ng l??i Stencil chuy?n d?ng</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 6] C?n ch?nh footprint d??i k?nh hi?n vi & ??ng chip b?ng nhi?t gi? xo?y</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 7] T?y r?a s?ch s? t?n d? flux b?ng dung d?ch chuy?n d?ng & ?o ki?m tr? kh?ng</td></tr></tbody></table></div>
+------------------------------------------------------------------------------------+

Ch?ng s?c nhi?t bo m?ch: Bo m?ch ch? MacBook nhi?u l?p (10-12 layers PCB) ch?a c?c ???ng m?ch vi m? ch?y ng?m. Tuy?t ??i kh?ng kh? nhi?t c?c b? t? m?t tr?n khi ch?a d?ng m?m nhi?t ??y (Pre-heater 150?C), v? s? g?y ph?ng r?p (Delamination) n? ??t m?ch in ng?m.
Bi ch? h?n ch?t l??ng cao: S? d?ng bi ch? h?p kim Sn63Pb37 (nhi?t ?? n?ng ch?y 183?C) ho?c ch? kh?ng ch? cao c?p SAC305 ?? ??m b?o m?i h?n s?ng b?ng, ch?u ???c rung ??ng c? h?c v? kh?ng b? oxy h?a n?t ch?n sau th?i gian d?i s? d?ng.

6. Kh?i Ph?c Firmware Chip B?o M?t Apple T2 / DFU Mode Sau Khi S?a Ngu?n

Tr?n c?c d?ng MacBook t? 2018 tr? ?i (s? d?ng chip b?o m?t Apple T2 ho?c to?n b? d?ng chip Apple Silicon M1/M2/M3/M4), sau khi ph?c h?i ??y ?? ?i?n ?p ph?n c?ng (PPBUS_G3H 12.6V, PPDCIN_G3H 20V, PP3V3_G3H 3.3V), chi?c MacBook v?n c? th? kh?ng xu?t h?nh v? qu?t kh?ng quay do firmware BridgeOS b? l?i (Corrupted Firmware) khi m?t ngu?n ??t ng?t.

COMMAND PROMPT / TERMINAL

+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>QUY TR?NH C?U D? LI?U & N?P FIRMWARE DFU MODE</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>[MacBook S?a Ngu?n] <==== C?p Thunderbolt C-to-C ====> [M?y Mac C?u H? Lab]</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>(C?ng DFU Master) (Ch?y Apple Configurator 2)</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>+-----------> Gi? t? h?p ph?m DFU ??c th? -----------------> Nh?n di?n DFU</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>+---------------------------+</td></tr></tbody></table></div>
| v v

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>[L?nh 1: REVIVE DEVICE] [L?nh 2: RESTORE DEVICE]</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>(Kh?i ph?c BridgeOS T2/M-chip) (N?p s?ch OS & BridgeOS)</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>==> GI? NGUY?N 100% D? LI?U ==> X?a tr?ng ? c?ng</td></tr></tbody></table></div>
+------------------------------------------------------------------------------------+

Quy tr?nh Revive an to?n: K? s? k?t n?i MacBook qua c?ng Type-C chuy?n d?ng sang m?y tr?m h? tr? t?i Lab, m? ph?n m?m Apple Configurator 2, ??a m?y v? tr?ng th?i DFU (Device Firmware Update) b?ng t? h?p ph?m ph?n c?ng. K? s? ch?n l?nh "Revive Device" ?? n?p l?i ph?n v?ng ?i?u khi?n ngu?n v? kh?a b?o m?t Secure Enclave m? kh?ng l?m m?t b?t k? d? li?u c? nh?n n?o tr?n ? c?ng SSD c?a kh?ch h?ng.

7. L?i Khuy?n T? K? S? Tr??ng VietITPro Khi MacBook M?t Ngu?n

Khi chi?c MacBook c?a b?n ??t ng?t s?p ngu?n ho?c kh?ng nh?n s?c:

1. R?t s?c ngay l?p t?c: Tuy?t ??i kh?ng c?m s?c ng?m li?n t?c nhi?u gi? ho?c th? ??i nhi?u c? s?c c?ng su?t l?n v?i hy v?ng m?y "t? l?n". N?u bo m?ch ?ang b? ch?p t?, vi?c ng?m ?i?n 20V s? l?m nung ch?y ???ng m?ch ??ng v? ??nh th?ng c?c IC ngu?n l?n c?n.

2. Kh?ng t? ? c?y m? khi kh?ng c? ?? ngh? ESD: T?nh ?i?n t? b?n tay ho?c ??u tua v?t ch?m sai ch?n socket pin c? th? ph? h?y ho?n to?n chip b?o m?t T2 ho?c PMIC.

3. Mang m?y ??n ph?ng Lab chuy?n s?u: N?i c? ??y ?? trang thi?t b? ?o ??c, s? ?? Boardview ch?nh x?c v? k? thu?t vi?n tay ngh? vi ph?u ?? ??m b?o chi?c m?y ???c c?u s?ng tr?n v?n v?i chi ph? t?i ?u nh?t.

1. Ki?n Tr?c C?y Ngu?n (Power Distribution Tree) Tr?n Bo M?ch Ch? MacBook

COMMAND PROMPT / TERMINAL

+-----------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>S? ?? C?Y NGU?N MACBOOK TYPE-C / MAGSAFE 3</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+-----------------------------------------------------------------------------+

C?ng S?c Type-C / MagSafe 3 (C?p ?p ban ??u 5V)


v

[Chip CD3215 / CD3217 / TPS65988] <---> Giao ti?p USB-PD Controller

| (??m ph?n th?nh c?ng -> N?ng ?p l?n 20V / 28V)

v

???ng ngu?n ??u v?o: PPDCIN_G3H (20.0V)


v

[IC S?c ISL9239 / ISL9240 / ISL9241] + [Cu?n c?m Buck-Boost L]


+-----------------------------> ???ng ngu?n ch?nh: PPBUS_G3H (12.6V / 13.1V)


v +---> [M?ch Buck PP3V3_G3H] -> C?p ngu?n SMC/T2/PMU

[Kh?i Pin Lithium-ion] |

(S?c / X? t? ??ng) +---> [M?ch Buck PP5V_S5 / PP3V3_S5]


+---> [M?ch Buck VRM L?i CPU/GPU: 0.7V - 1.05V]

1.1. ???ng Ngu?n Ch?nh PPBUS_G3H: "X??ng S?ng" N?ng L??ng C?a To?n B? M?y

Kh?i ni?m: PPBUS_G3H (Power Primary Bus Generated 3 High) l? ???ng ?i?n ?p ch?nh nu?i to?n b? c?c m?ch h? ?p th? c?p tr?n bo m?ch ch?.
Gi? tr? ?i?n ?p chu?n:
Tr?n c?c d?ng MacBook Intel & MacBook Air M1/M2: 12.6V (khi kh?ng pin) ho?c t? 11.1V - 12.6V (khi c? pin).
Tr?n c?c d?ng MacBook Pro 16" Intel v? MacBook Pro 14"/16" M-Series: 13.1V.
Quy t?c ch?n ?o?n: N?u ???ng PPBUS_G3H b? m?t ?p (0V) ho?c b? s?t ?p (ch? c?n 1.2V - 3.8V), to?n b? c?c IC ngu?n ph? v? vi x? l? s? b? kh?a ho?n to?n.

1.2. ???ng Ngu?n Ph? C?p Tr??c PP3V3_G3H

?i?n ?p chu?n: 3.3V.
Vai tr?: Cung c?p n?ng l??ng cho chip ?i?u khi?n h? th?ng (SMC tr?n m?y Intel, chip b?o m?t Apple T2, ho?c Power Management Unit PMU tr?n Apple Silicon), chip BIOS SPI ROM v? c?c c?ng logic k?ch ngu?n. N?u m?t PP3V3_G3H, m?y ho?n to?n m?t t?n hi?u nh?n di?n s?c v? kh?ng th? k?ch ngu?n.

2. Ph?n T?ch C?m Chip ?i?u Khi?n S?c & Giao Ti?p Type-C: CD3215, CD3217 & ISL9240

Ph?n l?n c?c s? c? "c?m s?c kh?ng b?o g?" tr?n MacBook ??i m?i ??u b?t ngu?n t? c?m giao ti?p c?ng Type-C (Thunderbolt Controller).

COMMAND PROMPT / TERMINAL

+-----------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>C?C D?NG IC NGU?N & CONTROLLER PH? BI?N TR?N MACBOOK</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+---------------------+-----------------------+-------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>T?n Linh Ki?n</th><th class='px-4 py-3'>V? tr? / M? linh ki?n</th><th class='px-4 py-3'>Ch?c n?ng k? thu?t c?t l?i</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+---------------------+-----------------------+-------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>CD3215 / CD3217</th><th class='px-4 py-3'>U3100, U3200, UB300</th><th class='px-4 py-3'>USB-C Power Delivery Controller (5V->20V)</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>ISL9239 / ISL9240</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>U7000 (Intersil)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Buck-Boost Battery Charger / T?o PPBUS</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>TPS65988</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Texas Instruments</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Dual Port USB-C Controller th? h? m?i</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Apple PMU (M-chip)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>APL109X / 338S00780</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Qu?n l? ph?n ph?i ngu?n ?a k?nh SoC</td></tr></tbody></table></div>
+---------------------+-----------------------+-------------------------------------------+

2.1. Hi?n t??ng "K?t ngu?n 5V/0.00A" ho?c "5V/0.05A" do l?i CD3215 / CD3217

Khi b?n c?m c? s?c 61W/87W/96W/140W v?o MacBook, c? s?c ban ??u ch? c?p ra ?i?n ?p an to?n 5V.
Chip ?i?u khi?n c?ng Type-C (CD3215 ho?c CD3217) t?i c?ng ?? s? th?c d?y, t? k?ch ho?t 2 ngu?n n?i t?i LDO (Low Dropout): PP1V1_UPC_LDO (1.1V) v? PP3V3_UPC_LDO (3.3V).
Sau ??, chip n?y g?i g?i tin k? thu?t s? qua ???ng giao ti?p CC1 / CC2 (Configuration Channel) ??n c? s?c theo chu?n USB Power Delivery: "T?i l? MacBook, h?y n?ng ?i?n ?p l?n 20V (ho?c 28V ??i v?i chu?n EPR 140W)".
Pan b?nh th?c t?: C?c chip CD3215 ???c m?c n?i ti?p theo c?u tr?c Master-Slave (th??ng c? 2 ho?c 4 chip t??ng ?ng v?i 2 ho?c 4 c?ng Type-C). N?u ch? 1 trong 4 chip b? n?t ch?n ch?, r? r? ho?c ch?p ngu?n n?i b? LDO 1.1V, to?n b? v?ng l?p giao ti?p b? treo. H?u qu? l? m?y b? k?t c?ng ? m?c 5V v? ?n d?ng 0.00A ho?c 0.05A, kh?ng th? chuy?n ??i l?n 20V ?? s?c pin hay m? ngu?n.

2.2. IC S?c ISL9239 / ISL9240: Tr?i Tim Chuy?n ??i Buck-Boost

Nh?n ?i?n ?p 20V t? PPDCIN_G3H v? ?i?u khi?n 4 MOSFET c?ng su?t ngo?i (Q7030, Q7040, Q7065, Q7070) ?? b?m xung ?i?n t?, t?o ra ?i?n ?p PPBUS_G3H 12.6V ho?c s?c d?ng cao v?o kh?i pin.
N?u ISL9240 b? h?ng ch?n giao ti?p SMBUS_SMC_5_G3H_SCL / SDA k?t n?i v?i chip T2/SMC, n? s? r?i v?o tr?ng th?i Safe-Mode v? ch? xu?t ra ?i?n ?p c?p c?u ~12.2V nh?ng kh?ng m? d?ng t?i, m?y s? kh?ng th? kh?i ??ng.

3. M?ch Chuy?n ??i DC-DC Buck Converter & R?i Ro Th?ng High-Side MOSFET

M?t trong nh?ng nguy c? kinh ho?ng nh?t ??i v?i k? s? ph?n c?ng khi s?a m?ch ngu?n l? hi?n t??ng High-Side MOSFET b? ??nh th?ng.

Sơ Đồ Luồng Tín Hiệu

Tuyến Tín Hiệu

???ng ngu?n ch?nh PPBUS_G3H (12.6V) +

→

High-Side MOSFET (Chuy?n m?ch xung) +

→

?i?m giao c?t xung PWM: Phase Node

→

Cu?n c?m L

→

Ngu?n CPU (0.9V) +

→

Low-Side MOSFET (X? d?ng mass) T? l?c g?m GND GND GND

Nguy?n l?: M?ch Buck Converter bi?n ??i ?i?n ?p cao PPBUS_G3H (12.6V) th?nh ?i?n ?p si?u th?p nh?ng d?ng c?c l?n (0.7V - 1.05V, c??ng ?? d?ng ?i?n l?n t?i 40A - 80A) ?? c?p cho c?c nh?n CPU Core v? GPU Clusters.
R?i ro k? thu?t: High-Side MOSFET ph?i ??ng ng?t h?ng tr?m ng?n l?n m?i gi?y (t?n s? 300kHz - 1MHz). Khi linh ki?n n?y b? gi? c?i ho?c qu? nhi?t do b?i b?n, m?i n?i P-N b?n trong b? ??nh th?ng ho?n to?n (Short Circuit gi?a c?c Drain v? Source).
H?u qu?: ?i?n ?p 12.6V c?a PPBUS_G3H x?c th?ng tr?c ti?p qua cu?n c?m v? d?i th?ng v?o l?i vi x? l? SoC (v?n ch? ch?u ???c t?i ?a 1.2V). Tinh th? silicon b?n trong CPU b? thi?u r?i ch? trong v?i micro gi?y, g?y ch?t v?nh vi?n chip vi x? l?.

4. K? Thu?t ?o Tr? Kh?ng (Diode Mode) & B?m ?p Nhi?t H?c (Voltage Injection)

?? tr?nh l?m ch?t CPU khi s?a ngu?n, k? s? VietITPro lu?n tu?n th? nguy?n t?c ?o ki?m c?ch ly nghi?m ng?t tr??c khi c?p b?t k? ngu?n ?i?n n?o v?o bo m?ch.

COMMAND PROMPT / TERMINAL

+-----------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>B?NG TRA C?U TR? KH?NG CHU?N DIODE MODE TR?N BO M?CH MACBOOK</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+----------------------+--------------------+--------------------+------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>T?n ???ng Ngu?n</th><th class='px-4 py-3'>Tr? kh?ng Diode</th><th class='px-4 py-3'>Tr? kh?ng Ohm (?)</th><th class='px-4 py-3'>??nh gi? k? thu?t</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+----------------------+--------------------+--------------------+------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>PPBUS_G3H</th><th class='px-4 py-3'>0.400V - 0.520V</th><th class='px-4 py-3'>> 100 k?</th><th class='px-4 py-3'>N?u < 0.010V: Ch?p t?i</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>PP3V3_G3H</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>0.350V - 0.450V</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>> 50 k?</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>N?u < 0.050V: Ch?p PMU</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>PP1V8_S3 (RAM Power)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>0.250V - 0.350V</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>500? - 2 k?</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>B?nh th??ng</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>PPVDD_CPU_AWAKE (SoC)</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>0.005V - 0.025V</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>1.5? - 5.0?</td><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>Tr? kh?ng th?p t? nhi?n</td></tr></tbody></table></div>
+----------------------+--------------------+--------------------+------------------------+

4.1. K? Thu?t ?o Diode Mode B?ng ??ng H? V?n N?ng Fluke

K? s? chuy?n ??ng h? v? thang ?o Diode: Que ?? ti?p Mass (GND v? ??ng bo m?ch), que ?EN ch?m v?o t?ng ??u cu?n c?m L v? t? g?m l?c ngu?n.
L?u ? chuy?n m?n: Nhi?u th? thi?u kinh nghi?m khi ?o cu?n c?m ngu?n CPU th?y ??ng h? k?u "B?p" v? hi?n th? 2Ω li?n k?t lu?n l? "ch?p CPU". Th?c t?, c?c nh?n x? l? c?a Apple Silicon v? Intel ho?t ??ng ? ?i?n ?p d??i 1V d?ng cao n?n n?i tr? t? nhi?n c?a ch?ng r?t th?p (1.2Ω - 4.5Ω). ?i?m ph?n bi?t ch?p th?c s? l? khi tr? kh?ng r?t v? 0.000Ω v? que ?o Diode hi?n th? 0.000V.

4.2. K? Thu?t B?m D?ng (Voltage Injection) B?ng Camera Nhi?t H?ng Ngo?i

Khi ph?t hi?n ???ng PPBUS_G3H b? ch?m mass ho?n to?n (0Ω):

1. K? s? t?ch r?i kh?i pin v? c?ch ly c?p m?n h?nh, c?p trackpad.

2. S? d?ng b? ngu?n k? thu?t s? DC Precision Power Supply, ??t m?c ?p 1.0V (?? ??m b?o d? c? th?ng High-side MOSFET c?ng kh?ng l?m ch?y CPU) v? gi?i h?n d?ng ?i?n ? m?c 2.0A - 3.0A.

3. B?m ?i?n c?c d??ng v?o ???ng PPBUS_G3H, c?c ?m k?p mass chassis.

5. K? s? g?p b? t? ch?m, ?o l?i tr? kh?ng Diode mode kh?i ph?c v? 0.450V m?i ti?n h?nh c?p ngu?n th?t.

5. K? Thu?t Kh? H?n IC Ngu?n BGA / QFN D??i K?nh Hi?n Vi Quang H?c

Vi?c thay th? IC ngu?n tr?n bo m?ch ch? MacBook ??i h?i tay ngh? vi ph?u ph?n c?ng ??t ?? ch?nh x?c ??n t?ng micromet.

COMMAND PROMPT / TERMINAL

+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>QUY TR?NH THAY TH? IC NGU?N BGA CHU?N PH?NG LAB VIETITPRO</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>[B??c 1] Gia nhi?t ??y bo m?ch (Pre-heater 150?C) ch?ng cong v?nh PCB</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 2] B?i m? h?n tr? dung Amtech NC-559-V2-TF & B?c gi?y b?c c?ch nhi?t chip l?n c?n</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 3] Kh? nhi?t 360?C - 380?C nh?c IC ngu?n h?ng b?ng nh?p Titanium vi ph?u</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 4] D?n s?ch ch? c? tr?n Pad m?ch b?ng b?c h?t Goot Wick m? ch?t tr? h?n</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 5] ?? ch?n ch? vi m? (Reballing) cho IC m?i b?ng l??i Stencil chuy?n d?ng</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 6] C?n ch?nh footprint d??i k?nh hi?n vi & ??ng chip b?ng nhi?t gi? xo?y</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>v</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>[B??c 7] T?y r?a s?ch s? t?n d? flux b?ng dung d?ch chuy?n d?ng & ?o ki?m tr? kh?ng</td></tr></tbody></table></div>
+------------------------------------------------------------------------------------+

Ch?ng s?c nhi?t bo m?ch: Bo m?ch ch? MacBook nhi?u l?p (10-12 layers PCB) ch?a c?c ???ng m?ch vi m? ch?y ng?m. Tuy?t ??i kh?ng kh? nhi?t c?c b? t? m?t tr?n khi ch?a d?ng m?m nhi?t ??y (Pre-heater 150?C), v? s? g?y ph?ng r?p (Delamination) n? ??t m?ch in ng?m.
Bi ch? h?n ch?t l??ng cao: S? d?ng bi ch? h?p kim Sn63Pb37 (nhi?t ?? n?ng ch?y 183?C) ho?c ch? kh?ng ch? cao c?p SAC305 ?? ??m b?o m?i h?n s?ng b?ng, ch?u ???c rung ??ng c? h?c v? kh?ng b? oxy h?a n?t ch?n sau th?i gian d?i s? d?ng.

6. Kh?i Ph?c Firmware Chip B?o M?t Apple T2 / DFU Mode Sau Khi S?a Ngu?n

COMMAND PROMPT / TERMINAL

+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>QUY TR?NH C?U D? LI?U & N?P FIRMWARE DFU MODE</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'></tbody></table></div>
+------------------------------------------------------------------------------------+

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>[MacBook S?a Ngu?n] <==== C?p Thunderbolt C-to-C ====> [M?y Mac C?u H? Lab]</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>(C?ng DFU Master) (Ch?y Apple Configurator 2)</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>+-----------> Gi? t? h?p ph?m DFU ??c th? -----------------> Nh?n di?n DFU</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>+---------------------------+</td></tr></tbody></table></div>
| v v

<div class='overflow-x-auto my-6 rounded-xl border border-slate-200 dark:border-slate-700 shadow-sm'><table class='min-w-full divide-y divide-slate-200 dark:divide-slate-700 text-left text-sm'><thead class='bg-slate-100 dark:bg-slate-800 text-slate-900 dark:text-white font-semibold'><tr><th class='px-4 py-3'>[L?nh 1: REVIVE DEVICE] [L?nh 2: RESTORE DEVICE]</th></tr></thead><tbody class='divide-y divide-slate-100 dark:divide-slate-800 bg-white dark:bg-slate-900'><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>(Kh?i ph?c BridgeOS T2/M-chip) (N?p s?ch OS & BridgeOS)</td></tr><tr class='hover:bg-slate-50 dark:hover:bg-slate-800/50 transition-colors'><td class='px-4 py-3 text-slate-700 dark:text-slate-300'>==> GI? NGUY?N 100% D? LI?U ==> X?a tr?ng ? c?ng</td></tr></tbody></table></div>
+------------------------------------------------------------------------------------+

Quy tr?nh Revive an to?n: K? s? k?t n?i MacBook qua c?ng Type-C chuy?n d?ng sang m?y tr?m h? tr? t?i Lab, m? ph?n m?m Apple Configurator 2, ??a m?y v? tr?ng th?i DFU (Device Firmware Update) b?ng t? h?p ph?m ph?n c?ng. K? s? ch?n l?nh "Revive Device" ?? n?p l?i ph?n v?ng ?i?u khi?n ngu?n v? kh?a b?o m?t Secure Enclave m? kh?ng l?m m?t b?t k? d? li?u c? nh?n n?o tr?n ? c?ng SSD c?a kh?ch h?ng.

7. L?i Khuy?n T? K? S? Tr??ng VietITPro Khi MacBook M?t Ngu?n

Khi chi?c MacBook c?a b?n ??t ng?t s?p ngu?n ho?c kh?ng nh?n s?c:

2. Kh?ng t? ? c?y m? khi kh?ng c? ?? ngh? ESD: T?nh ?i?n t? b?n tay ho?c ??u tua v?t ch?m sai ch?n socket pin c? th? ph? h?y ho?n to?n chip b?o m?t T2 ho?c PMIC.

1. Ki?n Tr?c C?y Ngu?n (Power Distribution Tree) Tr?n Bo M?ch Ch? MacBook

1.1. ???ng Ngu?n Ch?nh PPBUS_G3H: "X??ng S?ng" N?ng L??ng C?a To?n B? M?y

1.2. ???ng Ngu?n Ph? C?p Tr??c PP3V3_G3H

2. Ph?n T?ch C?m Chip ?i?u Khi?n S?c & Giao Ti?p Type-C: CD3215, CD3217 & ISL9240

2.1. Hi?n t??ng "K?t ngu?n 5V/0.00A" ho?c "5V/0.05A" do l?i CD3215 / CD3217

2.2. IC S?c ISL9239 / ISL9240: Tr?i Tim Chuy?n ??i Buck-Boost

3. M?ch Chuy?n ??i DC-DC Buck Converter & R?i Ro Th?ng High-Side MOSFET

4. K? Thu?t ?o Tr? Kh?ng (Diode Mode) & B?m ?p Nhi?t H?c (Voltage Injection)

4.1. K? Thu?t ?o Diode Mode B?ng ??ng H? V?n N?ng Fluke

4.2. K? Thu?t B?m D?ng (Voltage Injection) B?ng Camera Nhi?t H?ng Ngo?i

5. K? Thu?t Kh? H?n IC Ngu?n BGA / QFN D??i K?nh Hi?n Vi Quang H?c

6. Kh?i Ph?c Firmware Chip B?o M?t Apple T2 / DFU Mode Sau Khi S?a Ngu?n

7. L?i Khuy?n T? K? S? Tr??ng VietITPro Khi MacBook M?t Ngu?n

Thiết bị phần cứng của bạn đang gặp sự cố tương tự?

Sản Phẩm & Linh Kiện Khuyên Dùng

Apple MacBook Air M2 8GB 256GB - MacBook Air chip Apple M2

Apple MacBook Pro 14 M1 16GB 512GB - MacBook Pro chip Apple M1

Apple MacBook Pro 13 M1 Late 16GB 512GB - MacBook Pro 13 Apple Silicon M1

Apple MacBook Pro 13 M2 8GB 256GB (CPO) - MacBook Pro 13 Apple Silicon M2

BÌNH LUẬN & THẢO LUẬN KỸ THUẬT

Vui lòng đăng nhập để gửi bình luận hoặc câu hỏi kỹ thuật

1. Ki?n Tr?c C?y Ngu?n (Power Distribution Tree) Tr?n Bo M?ch Ch? MacBook

1.1. ???ng Ngu?n Ch?nh PPBUS_G3H: "X??ng S?ng" N?ng L??ng C?a To?n B? M?y

1.2. ???ng Ngu?n Ph? C?p Tr??c PP3V3_G3H

2. Ph?n T?ch C?m Chip ?i?u Khi?n S?c & Giao Ti?p Type-C: CD3215, CD3217 & ISL9240

2.1. Hi?n t??ng "K?t ngu?n 5V/0.00A" ho?c "5V/0.05A" do l?i CD3215 / CD3217

2.2. IC S?c ISL9239 / ISL9240: Tr?i Tim Chuy?n ??i Buck-Boost

3. M?ch Chuy?n ??i DC-DC Buck Converter & R?i Ro Th?ng High-Side MOSFET

4. K? Thu?t ?o Tr? Kh?ng (Diode Mode) & B?m ?p Nhi?t H?c (Voltage Injection)

4.1. K? Thu?t ?o Diode Mode B?ng ??ng H? V?n N?ng Fluke

4.2. K? Thu?t B?m D?ng (Voltage Injection) B?ng Camera Nhi?t H?ng Ngo?i

5. K? Thu?t Kh? H?n IC Ngu?n BGA / QFN D??i K?nh Hi?n Vi Quang H?c

6. Kh?i Ph?c Firmware Chip B?o M?t Apple T2 / DFU Mode Sau Khi S?a Ngu?n

7. L?i Khuy?n T? K? S? Tr??ng VietITPro Khi MacBook M?t Ngu?n

Thiết bị phần cứng của bạn đang gặp sự cố tương tự?

Sản Phẩm & Linh Kiện Khuyên Dùng

Apple MacBook Air M2 8GB 256GB - MacBook Air chip Apple M2

Apple MacBook Pro 14 M1 16GB 512GB - MacBook Pro chip Apple M1

Apple MacBook Pro 13 M1 Late 16GB 512GB - MacBook Pro 13 Apple Silicon M1

Apple MacBook Pro 13 M2 8GB 256GB (CPO) - MacBook Pro 13 Apple Silicon M2

BÌNH LUẬN & THẢO LUẬN KỸ THUẬT

Vui lòng đăng nhập để gửi bình luận hoặc câu hỏi kỹ thuật