3-In-1 Sensor Circuit - Huawei G700-U10 Maintenance Manual

G700-U10 Smartphone
Maintenance Manual

10.4.6 3-in-1 Sensor Circuit

Circuit Diagram
Figure 10-37 3-in-1 sensor circuit
Circuit Analysis
The sensor U101 is a 3-in-1 sensor that has the light sensor, proximity sensor, and IR sensor
integrated. It transmits light, proximity, and IR sensing information to the CPU through the
I2C0 data bus in real time. EINT1_P_SENSOR is the interrupt signal.
Troubleshooting Process
Figure 10-38 Troubleshooting light sensor failures
Issue 1.0 (2013-07-22)
Light sensor failure
Is
VDD28_PMU
normal?
Y
Is the light sensor
chip normal?
Y
Resolder or
replace U401
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N
Check U202
N
Resolder or replace U101
10 Circuit and Failure Analysis
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