WiFi does not work
Weak transmit power
1. Troubleshooting flow chart
Weak RX sensitivity
1. Try to change Q700 and Q701. If it does not help than try to change S700 and S701.
2. RF components table
16 WiFi does not work
Check 5V output on C717
Measure FB700 resistanceChange U700, U701
Change FB700Change L717Change S700, S701
Change F700, F701
Change Y700
Change U1
Problem still
appears
Problem still
appears
Problem still
appears
Problem still
appears
5V 0V
<1
Ohm
>1
Ohm
Reference Manufacturer code Description Manufacturer
C717
UCW0J471MNL1GS Capacitor elec 470uF 20% 6.3V 8x10 SMD 7000h 600mA CW-series
NICHICON CORPORATION
F700, F701 LTB-2012-5G5H6-B3 Ceramic Bandpass Filter 5.5GHz Mag.Layers Scientific-Technics Co., Ltd.
FB700 CB04YTYH800 Ferrite Bead 80 Ohm 3A 1204 Viking Tech Corporation
Q700, Q701 BFU730LXZ NPN wideband silicon germanium RF transistor NXP Semiconductors
S700, S701 uPG2415T6X-E2-A GaAs MMIC SPDT Switch, 2.4GHz&6GHz, 2.5-5.3V NEC Electronics
U100 AR9344-BC2A SOC BGA 2x2 11n 5FE Qualcomm Atheros Technology Ltd.
U700, U701 SE5004L-R 5GHz 26dBm Power Amplifier with Power Detector, T&R SiGe Semiconductor
Y700 FY2500070 Crystal 25MHz 20ppm 15pF -20+70 CL15pF SMD 5x3.2 PSE Technology Corporation
On U100 CPU silcscreen must be the same product
code,
or You will lose the license. License may also lose if
changes U901
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