G700-U10 Smartphone
Maintenance Manual
10 Circuit and Failure Analysis
Issue 1.0 (2013-07-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
30
The core of the phone PCBA includes the MT6589 (baseband processing module), MT6320
(PM module), RF module (including the transceiver, PA, and antenna), man-machine
interfaces, and dedicated functional modules (such as Wi-Fi, GPS, and Bluetooth). The LCD
connects to the PCBA through the FPC; the receiver and speaker connect to the PCBA
through springs; the motor and microphone are soldered to the PCBA; the RF antenna
connects to the PCBA through springs. All the preceding components plus the covers and
battery comprise a mobile phone.
The G700-U10 incorporates a 5-inch TFT LCD with a resolution of 1280 x 720 pixels. The
phone has a built-in RF antenna and works with a 2150 mAh Li-polymer battery.
10.2 Baseband Subsystem
10.2.1 Startup Management Circuit
Circuit Diagram
Figure 10-2
Startup circuit