Frequencyerr; Wifi Test - Lenovo S960 Service Manual

LENOVO S960 Cellphone Service Manual
Problem: FrequencyErr
Reason: It's not calibrated; or there's outside interference.
Troubleshooting: Re-calibrate.

4.5 WiFi test

Problem: Can't find WiFi
Reason: WiFi/BT/GPS/FM four-in-one chip (U2306) and its surrounding circuits have soldering
problems.
Troubleshooting:
Does U2301 have a dry joint problem?

4.4.3 FrequencyErr

Can't find WiFi.
Does MT6628(U2306) have a dry
joint problem?
N
N
Replace main chip MT6628(U2306).
Y
Re-solder.
Y
Re-solder.
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