Name: Huawei Ascend G300
Brand: Huawei
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U8815

Maintenance Manual

4 PCBA Components

Issue 1.0 (2012-02-13)

Huawei Proprietary and Confidential

Figure 4-2 PCBA components diagram 2

Failure caused by

damage to the

spring of the J4101

GPS antenna: GPS

function failure

Failures caused by

damage to the

U4101RF low noise

amplifier GPS

function failure

Failures caused by

damage to the J1102

BTB connector–

FEMALE–24: failures of

proximity light, speaker,

and power key

Failure caused by

damage to the J1201

BTB connector–

FEMALE –10: touch

panel failure

Failure caused by

damage to the J1902

BTB connector–24

(J1902): camera

failure

Failure caused by

damage to the J1201

BTB connector–

FEMALE–24 (J1201):

LCD display failure

Failures caused by

damage to the

antenna springs of the

J4101BT and WIFI:

failures of BT and Wi-

Fi functions

Failure caused by

damage to the J1302

holder connector

Micro SD Receptacle:

failure to identify a

MicroSD card

Failures caused by

damage to the U3901

dual-channel RF

transmission and

receiving RTR6285A: no

signal, weak signal,

registration failure, and

GPS failure

Failures caused by GPS failure

and damage to the J3201 RF

connector: no signal, weak

signal, and registration failure

Failures caused by

damage to the J1501

holder connector–the

battery connector:

power-on and

charging failures

Failure caused by damage

to the U201power

management chip PM8029:

power failure that prevents

the components from

working properly

Failure caused by

damage to the J1601

card holder connector–

UIM card holder:

failure to identify a

UIM card

Failures caused by

damage to the J1101

BTB connector–

FEMALE-24: charging,

USB data

communication, and

call transmission

failures

Failure caused by

damage to the U4301

RF low-noise

amplifier: UMTS signal

failure

Failure caused by

damage to the U1001

charging chip:

charging failure

Failure caused by

damage to the motor:

vibration failure

Failure caused by

damage to the X301

32.768 kHz crystal

resonator: power-on

failure

Failure caused by

damage to the spring

of the J4302 UMTS

diversity antenna:

UMTS signal failure

Brand	Huawei
Model	Ascend G300
Category	Cell Phone
Language	English

Huawei Ascend G300 Maintenance Manual

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