Lenovo A328 Bedienungsanleitung
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A328 SERVICE MANUAL
V1.0
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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
8
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
RX
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
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