820-3437-B no wifi

Sr. Robot

Member
820-3437-Bwith no wifi. Tried 3 different cards, cleaned the port, installed 3 different OS´s.

J3501 Voltages:

PP3V3_WLAN: 3.351v
WIFI_EVENT_L: 1.0v
PCIE_CLK100M_AP_N: 0.5 mv
PCIE_CLK100M_AP_P: 0.3 mv
PCIE_AP_D2R_P: 1.6 mv
PCIE_AP_D2R_N: 1.7 mv
AP_PCIE_WAKE_L: 3.35 v
AP_RESET_CONN_L: 32 mv
AP_CLKREQ_Q_L: 3.3 v
USB_BT_CONN_N: 12mv
USB_BT_CONN_P: 10 mv
PP3V3_S4: 3.35v

U3540 voltages:

PP3V3_S5: 3.35v
P3V3WLAN_VMON: 1.0v
AP_RESET_L: 3.3v
AP_RESET_CONN_R_L: 3.35v
SMC_WIFI_PWR_EN: 3.34v
AP_CLKREQ_Q_L: 3.29v
AP_CLKREQ_R_L: 3.3v
 

2informaticos

Administrator
Staff member
Check AP_CLKREQ_R_L trace and connector contact.
It must drop to 0V, when airport card is attached.
 

Sr. Robot

Member
Yes, bluetooth works.

U3540 voltages with card attached:

PP3V3_S5: 3.351 v
P3V3WLAN_VMON: 1.0v
AP_RESET_L: 3.29 v
AP_RESET_CONN_R_L: 3.35v
SMC_WIFI_PWR_EN: 3.4v
AP_CLKREQ_Q_L: 0 v
AP_CLKREQ_R_L: 0 v
 

2informaticos

Administrator
Staff member
"J3501 Voltages:
--------------
AP_RESET_CONN_L: 32 mv
AP_CLKREQ_Q_L: 3.3 v"
Check them again, with airport card connected.
 
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