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G700-U10 Smartphone
Maintenance Manual
Troubleshooting Process
Figure 10-61 Troubleshooting Bluetooth failures
Circuit Signals
Table 10-21 Circuit signals of this section
Signal
DAICLK
DAISYNC
DAIPCMIN
DAIPCMOUT
UTXD3
URXD3
BGF_INT_B_6628 BT&GPS&FM interrupt signal
10.4.18 GPS Module Circuit
Circuit Diagram
See section 10.4.16 "Wi-Fi Module Circuit" for the module's circuit diagram.
Issue 1.0 (2013-07-22)
Bluetooth failure
Is the 4-in-1 chip
U2200 normal?
Y
Is the Bluetooth
antenna circuit normal?
Y
Resolder or
replace U401
Description
Bluetooth clock signal
PCM interface sync signal
PCM interface input data
PCM interface output data
UART interface used for BT&GPS&FM
control signal
UART interface used for BT&GPS&FM
control signal
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
N
Resolder U2200
Re-install the antenna,
N
or resolder or replace
the surrounding
components
10 Circuit and Failure Analysis
Reference Value or
Waveform
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87
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