2. Ethernet port components location on RouterBOARD
3. Ethernet port components table
Voltage and temperature monitor does not work
1. Troubleshooting flow chart
Voltage and temperature monitor does not work 13
U100
U400
Y400
L400
D401
D402
FB400
FB401
TRF401
Reference Manufacturer code Description Manufacturer
D401, D402 AOZ8808DI-05 Diode Array TVS 4 channel low cap DFN-10 Alpha & Omega
FB400, FB401 CB03YTYH121 Ferrite Bead 120 Ohm 2.5A 0603 Viking Tech Corporation
L400 BCRH2D18B/HP-4R7N Inductor 4.7uH 1.2A 3.2x3.2x2 RoHS Bao Cheng Electronics Co.,Ltd.,
U400 AR8033-AL1A 10/100/1000M RGMII AND SGMII INTERFACE ETHERNET PHY 48-pin QFN Atheros Technology Ltd.
U100 AR9344-BC2A SOC BGA 2x2 11n 5FE Qualcomm Atheros Technology Ltd.
Y400 XSA025000FK1H-OX Crystal 25MHz 30ppm 20pF -10+70 HC-49 (SMD) Height=4.5mm HARMONY ELECTRONICS CORP.
Measure resistors R957 (68K Ohms),
R958 (4.7K Ohms) resistance
Change faulty
resistor
Change U902
OK
Not OK
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