Y210 Mobile Phone
Maintenance Manual
9 Principles and Failure Analysis
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Headset, headset interface
circuit, microphone interface
circuit
The phone provides a headset jack to
output music playback audio or voice
during a call. The microphone on the
headset cable can pick sound and
input it into the phone. The headset
jack is compatible with iPhone
headsets.
Vibration motor
interface
Driver mode, connection mode,
motor
When there is an incoming call, the
motor can vibrate to notify the user of
the call.
Senses acceleration to help implement
game functions.
3.7 V/1700 mAh (the battery must be
certified and comply with relevant
safety regulations).
External power
supply (travel
charger)
Adapter and interface
component
The charger meets the
requirements of China, Europe,
the USA, and Australia.
Charger specifications: 90–240 V,
45–55 Hz, AC input. The model
differs with different markets.
The output voltage of the charger
is 5 ± 0.25 V. The charger must be
CE and CCC certified.
The charger's output current must
be able to charge the battery and
supply power to the phone for
normal operation at the same time.
The charging current requirement
is 550 mA.
Power distribution
network and power
management
function
Power distribution network
Includes filter networks and PCB
traces for the power supply.
Battery management, charging
circuit, charging mode, and
charging protection
Manages battery charging and
discharging, provides overcharging
and over-discharging protection, and
charges the capacitor that supplies
power to maintain the real-time clock
(RTC).
Board circuit power
management (power-on/off
analysis)
Mainly controls the low-dropout
(LDO) regulator power supply to
flexibly manage power supply.
Based on the service status and the
requirements of the protocols and
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