Lenovo A328 Manual de usuario

LENOVO

A328 SERVICE MANUAL

V1.0

LENOVO

Documents statement:

zThis document is intended for use by qualified service

personnel only.

zThe documents only are used for service reference.

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TABLE OF CONTENT

Section page

1. Product Figures ..........................................................................5

1-1. Exploded view...................................................................5

1-2. Product Main Function ......................................................7

1-3. General Specification........................................................7

2. Block Diagrams ..........................................................................8

2-1. System Diagrams..............................................................8

2-1-1 BBIC Diagrams.........................................................8

2-2. Power Management Diagrams..........................................9

3. Flow Chart of Troubleshooting .................................................11

3-1.Baseband.........................................................................11

3-1-1. Phone does not start up troubleshooting...............11

3-1-2. SIM troubleshooting...............................................14

3-1-3. MIC troubleshooting...............................................15

3-1-4. T-Flash troubleshooting.........................................20

3-1-5. Speaker troubleshooting........................................21

3-1-6. Receiver troubleshooting.......................................21

3-1-7. Vibra troubleshooting.............................................22

3-1-8. Camera troubleshooting ........................................24

3-1-9. FM radio troubleshooting.......................................28

3-1-10. Display troubleshooting .......................................30

3-1-11. Bluetooth WIFI GPS troubleshooting...................32

3-1-12. Keyboard troubleshooting....................................32

3-1-13. Charge troubleshooting .......................................34

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3.2 RF.....................................................................................38

3-2-1.GSM/DCS RX troubleshooting ...............................38

3-2-2.DCS/GSM TX Part..................................................39

4. Main Element Specifications ....................................................39

4-1 Baseband part..................................................................39

4-1-1.BBIC(U108) ............................................................39

4-1-2. Power Management Control(U501).......................49

4-1-3. WIFI/GPS/FM/BT IC(U1102) .................................52

4-1-4. Charge IC(U502) ...................................................55

4-1-5. NAND+SDRAM(U401)...........................................56

4-2. RF part ............................................................................59

4-2-1. RF PA(U101) .........................................................59

4-2-2. RF TRANSCEIVER (U201) ...................................60

5. Test Instructions .......................................................................67

6. Glossary ...................................................................................68

7. Warnings and cautions.............................................................70

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1. Product Figures

1-1. Exploded view

U101 RF PA

Damage caused by failure：：

Call fault

U501 Power Management

Damage caused by failure：

large currents;does not boot;

U108 BBIC

Damage caused by failure

does not boo;crashes

U401 NAND SDRAM

Damage caused by failure：

does not boot; showing white;

storage failures,;software

problems

U204/U205 RX filter

Damage caused by failure：

Call failed

U106 RF-TR

Damage caused by failure：

RF faults，Call fault

X1101 X101 26M Crystals

Damage caused by failure：：

Can not boot;WIFI、GPS、BT、

FM test fail

U1102 MT6627 IC

Damage caused by failure：

WIFI/GPS/FM/BT does not

work

U801 G-sensor IC

Damage caused by failure: The

screen can not be rotated

U701 Backlight driving chip

Damage caused by failure：

NO display

U502 Charger IC

Damage caused by failure：

Does not charge：

U303Audio PA IC

Damage caused by failure：：

Call fault

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Part name

ITEM Part No. Model QULITY

1 HQ11100239000 MT6582V/X 1

2 HQ11100133000 MT6166V 1

3 HQ11100242000 MT6323GA 1

4 HQ11110079000 MT6627N 1

5 HQ11120212000 5M39A46-5Z0//5M39A465Z0 1

6 HQ11160096000 VC5341 1

7 HQ11160115000 VC5348 1

8 HQ11150045000 ET5120A 1

9 HQ11220005000 WPT2N41-8/TR 1

10 HQ11180029000 BMA223 1

J501 duo electrical

connector

Damage caused by failure：

does not boot; power down;

J602 SIM card

Damage caused by failure：

does not know the SIM card

J801 Headphone Jack

Damage caused by failure：

Headphones silent;

not receive FM

J603 T-flash card

Damage caused by failure：

does not know the T-flash

card;

J901 LCD connector

Damage caused by failure：

Does not display

J902 CTP connector

Damage caused by failure：

No Touch

J601 Back camera

Damage caused by failure：

Camera does not work

J1003 Front camera

Damage caused by failure：

Cannot take photo

J802 USB Connector

Damage caused by failure:

Doesn’t charge,data transmit

J601 SIM card

Damage caused by failure：

does not know the SIM card

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1-2. Product Main Function

¾ Support Camera

¾Music player

¾Support T-Flash card

¾Support WIFI

¾4.0" WVGA LCD

¾Support

GSM850&GSM900&DCS1800&PCS1900&WCDMA900&WCDMA210

0 Network

¾ Support Bluetooth

¾Support FM radio

¾Support dual SIM card

¾Support G-sensor

¾ Support GPS

1-3. General Specificatio

PCS1900

1850～1910

1930～1990

80 MHz

270.833 kbps

3.692 us

576.9 us

4.615 ms

0.3 GMSK

30 dbm～0 dbm

0 pcl~15 pcl

-100 dbm

512~810

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2. Block Diagrams

2-1. System Diagrams

5V IN

USB DM/DP

URAT TX/RX

ANT

Remark：FM/GPS/WIFI/BT to Four in Chip;

2-1-1 BBIC Diagrams

MediaTek MT6572 is based on four core ARM architecture (28nm A7

architecture) ,frequency of 1.3 GHz,can be seen MT6572 quad-core upgraded

or modified MT6589 , in addition the GPU or the first TD-SCDMA and WCDMA

dual-mode integrated in the same single chip(can be seen as MTK6582 will

bring TD baseband chips ,the disputed).At the same time ,mediatek will also

launch MT6582M Mt6582 cheap version . Including mediatek MT6582

highest level support 720P resolution screen ; Mediatek Mt6582 is the highest

level can only support the QHD screen .Frequency is 1.3GHz,collocation of

RF Swit

MT6582（U108)

Charger

Battery

5PIN USB

3.5MM

Earphoen

FM Radio

Camera

Speak

WVGA LCD

SIM 1/SIM

Receiver

GPS IC

Bluetoot

ROM+RAM

T-FLASH

Audio_PA

RF Swit

RF-PA

RF-TR

Side Health

WIFI IC

TX PA

MIC

26M

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GPU models for SGX still 544.

Typical application diagram is shown in nether figure

Application Diagram of MT6582

2-2. Power Management Diagrams

LENOVO

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