• Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu

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#1 Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu


by krisark 5 June 2024, 07:24
Witam wszystkich,
Lenovo THINKPAD L14 GEN 1 LCFC GL4A0 GL5A0 NM-C631
Po włączeniu laptopa wentylator pracuje na maksymalne obroty.
Naprawiłem wsad BIOS z czyszczeniem ME Region, BIOS w najnowszej wersji R17ET41W (1.24) wyczyszczony i przeprogramowany KBC wersja R17HT33W (1.17)
Nic nie pomogło. Co jeszcze można sprawdzić, proszę o pomoc w naprawie.

Re: Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu


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#2 Re: Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu


by matic 5 June 2024, 07:35
Hello!

Measure the voltages to ground on all pins of fan connector with and without fan connected.

#3 Re: Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu


by krisark 5 June 2024, 07:49
Cześć
matic wrote:Measure the voltages to ground on all pins of fan connector with and without fan connected.
JFAN1 z wentylatorem:
pin 1 - 3,36V
pin 2 - 5,09V
pin 3 - 2,05V
pin 4 - 0.00V
pin 5 - 0,00V

JFAN1 bez wentylatora:
pin 1 - 3,36V
pin 2 - 5,11V
pin 3 - 3,33V
pin 4 - 0.00V
pin 5 - 0,00V

#4 Re: Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu  [SOLVED]


by Vogelek23 5 June 2024, 10:26
Zmierz napięcie do masy na pinie 31 kontrolera EC (UEC1) z podłączonym i odłączonym wentylatorem. Wydaje się, że albo uszkodzony jest wentylator (działa pomimo braku sygnału włączenia na n. 5) albo złącze wentylatora. Obejrzyj dokładnie gniazdo JFAN1, czy nie ma na nim zimnych lutów i czy piny nie są pogięte.

#5 Re: Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu


by krisark 5 June 2024, 12:11
Vogelek23 wrote:mierz napięcie do masy na pinie 31 kontrolera EC (UEC1) z podłączonym i odłączonym wentylatorem. Wydaje się, że albo uszkodzony jest wentylator (działa pomimo braku sygnału włączenia na n. 5) albo złącze wentylatora. Obejrzyj dokładnie gniazdo JFAN1, czy nie ma na nim zimnych lutów i czy piny nie są pogięte.
Wentylator miał defekt, odpadł 1-przewód.
Dzięki za pomoc.
Image

Re: Lenovo THINKPAD L14, NM-C631 - wentylator na max po włączeniu


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