• Lenovo V155-15API NM-C101 martwy

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Lenovo V155-15API NM-C101 martwy

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#1 Lenovo V155-15API NM-C101 martwy

by poster • 8 July 2024, 16:23
Lenovo V155-15API
płyta: NM-C101
CPU: AMD YM300UC4T20FG
KBC: IT 8586E FXA

Płyta nie reaguje na przycisk power (zarówno z novo button, jak i po zwarciu pin1 i pin2 w gnieździe klawiatury). Pobór prądu 13mA. Brak chipu LAN (ktoś wylutował)

ONOFFBTN # = 3.32V

Pracują przetwornice 3.3ALW i 5VALW, poza tym nic więcej. Nie działa +1.8VALW ani +0.9ALW.

Brak sygnału ALW_PWRGD (PU3501 = LV5083AGQUF), pin9 = 0.07V
KBC jest prawidłowo zasilany:
Pin 20,50, 92,114, 121, 127 = 3.32V

Pomiary PU3501 = LV5083AGQUF:
1 ,2 = 3.33V
3 = 8.07V
4 = 3.33V
5 = 3.33V
6 = 3.33V
7 = 5.02V
8 = 0V
9 = 0.07V
10 =3.26V
15 = 3.26V
16 = 0.31V
18 = 5.02V
19 =5.14V
20 = 5.14V
21 = 5.14V
22 = 9.02V
23,24 = 5.14V
25 = 5.14V
pozostałe: 0V

Rezystancja na PJ1906 = 8kΩ
PU1901 = LV5028RPC:
7,8 = 5.14V
16= 0V
19 = 3.33V

Proszę o pomoc w dalszej diagnozie.

Re: Lenovo V155-15API NM-C101 martwy

by Google Adsense [BOT] • 8 July 2024, 16:23
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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