GTC
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Service Manual
10. The setups for the mobile hardware testing and
testing results
Front End (RF Switch) : Including GSM antenna trace and the Tx, Rx trace of the front end
module.
GSM antenna trace:To identify whether the GSM antaean trace is conducted or not, the
conductivity between R385 and C340 (
) should be measured with
Component displacement plot 1
the light meter. If the conductivity between R385 and C340 is poor, it means the MS156 (RF
connector) is broken. Please replace this one with a new MS156. After the replacement, please
check the conductivity of the GSM antenna trace again.
MS156