Asus ZENFONE T500 Manuale di servizio - Pagina 18
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ASUS T500
Solution:
1
Check the welding status of the antenna on the KB board and contact with the antenna on battery cover, or
if the body is damaged.
2
Check if RF connector is welding normal or open circuit
3
Check if Front coupler U2001 is welding normal or is damaged.
4
Check if the GSM (TX) - channel element is welding normal or is damaged;
5
Check if the U2801 RF power amplifier chip is welding normal, and whether the relevant components are
damaged.
6
Add soldering or replace U2801
7
Add soldering or replace U1101
8
Add soldering or replace CPU
14. CDMA network failure
MB Service Manual
18