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G700-U10 Smartphone
Maintenance Manual
Troubleshooting Process
Figure 10-13 Troubleshooting clock circuit failures
Circuit Signals
Table 10-3 Circuit signals of this section
Signal
26 MHz crystal oscillator
26 MH temperature
compensation crystal
oscillator
32 kHz crystal
Issue 1.0 (2013-07-22)
No clock signal
output
Are the crystal and
crystal oscillator
properly soldered?
Y
Are the crystal and
crystal oscillator
damaged?
N
Resolder or replace
the faulty clock IC
Description
Provides clock signals for the
MT6167 and then the MT6589
Provides clock signals for the
GPS module in the MT6628Q
Provides clock signals for the
MT6230 and then the
MT6628Q
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Copyright © Huawei Technologies Co., Ltd.
10 Circuit and Failure Analysis
N
Resolder the
crystal and
cyrstal
oscillator
Y
Replace the
faulty crystal
or crystal
oscillator
Reference Value or
Waveform
43
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