FLY E176 Service Manual

SERVICE MANUAL

1. Main Functions:

 -Cool surface and Fashionable design
 -Audio Play/Video Recording/VGA Camera
 -GPRS/WAP
 -Support 8G T-Flash Card
 -Support PC sync
 -Network GSM900/1800 or GSM 850/1900

2. Main Selling Points

 -FM radio/record
 -BT Support

 -2.4“TFT QVGA(240*320)
 -AVI/3GP/MP4

3. Other Functions

 -USB2.0
 -SIZE: 115*49*11mm

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TABLE OF CONTENTS

INTRODUCTION………………………………………………………………………………...3
Chapter 1 EXPLODED VIEW AND COMPONENT DISPOSAL………………………..….4

EXPLODED DIAGRAM…………………………………………………………………….….4
DISASSEMBLY AND ASSEMBLY …………………………………………………………….…….…5

SERVICE TOOLS………………………………………………………………………………...5

DISASSEMBLE…………………………………………………………………………….……...7
ASSEMBLY………………………………………………………………………………….……..8

Chapter 2 SYSTEM BLOCK DIAGRAM………………………………………………….....10

Chapter 3 INSTRUCTION OF THE UNIT CIRCUIT………………………………….……..11
Chapter 4 ACTUALL BOARD………………………………………………………….…..….17

SIDE A…………….…………………………………………..………………………………….…….….17

SIDE B……………………….…………………………………………………………………….…...….18

Chapter 5 TROUBLESHOOTING……………………………………………………….….…20
Chapter 6 SOFTWARE INSTRUCTION OF SW UPDATE…………………………………25
Chapter 7 FUNCTION TEST……………………………………………………………..…….30
Chapter 8 PARAMETER SETTING INSTRUCTION…………………………………………32
Chapter 9 CATCHER INSTRUCTION………………………………………………………...34

INTRODUCTION

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The purpose of this document is to help service workshop technicians to service products. This service
manual must be used only by authorized service suppliers. The content of it is confidential. Please note that
provides other guidance documents for service suppliers. Follow these regularly and comply with the given
instructions. while every effort has been made to ensure the accuracy of this document, some errors may
exist. please keep in mind also that this documentation is continuously being updated and modified, so
always watch out for the newest version.

CAUTIONS

Please refer to the phone’s user’s guide for instructions relating to operation, care, and maintenance,
which include important safety information.

1. Servicing and alignment must be undertaken by qualified personnel only.

2. Ensure all work is carried out at an anti-static workstation and that an anti-static wrist strap is worn.

3. Use only approved components as specified in the parts list.

4. Ensure all components, modules, screws, and insulators are correctly re-fitted after servicing and
alignment

5. Ensure all cables and wires are repositioned correctly

Electrostatic discharge can easily damage the sensitive components of electronic products. Therefore,
every service supplier must observe the precautions which mentioned above.

GENERAL REPAIR INFORMATION

1. Make sure your testing equipment is functioning properly before beginning repair work.

2. before starting repairs you must observe ESD precautions such as being in your ESD
protected area and connecting your wristband.

3. use gloves to avoid corrosion and fingerprints.

4. cover windows and displays with a protective film to avoid dust and scratches.

5. use a lint-free cloth to clean the LCD.

6. when cleaning the pads use a soft cloth\ESD brush and isopropanol. Do not use a glass
fiber pencil: this scratches the surface and will corrosion.

7. non-faulty mechanical parts(except shielding lids and bent parts or soldered components).
May be reused if they are not soldered.

8. when removing the shielding lids make sure to replace them with new ones, otherwise the
high-frequency leakage can affect the device.

9. always use the original spare parts.

10. check the soldering joints of the parts concerned with regard to the fault symptom. And
resolder them if necessary.

11. remove excess soldering flux after repair.

12. observe the torque requirements when assembling the unit.

13. please aware that some malfunctions may be software related and solved by an update

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Chapter 1

EXPLODED VIEW AND COMPONENT DISPOSAL

EXPLODED

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IC LIST

Name

Type

No

Main IC

MT6253

(U101)

RF PA IC

RF7166

(U502)

flash（128+64）

MCP_BGA56

(U301)

FM IC

RA1000_QFN24

(U402)

BT IC

MT6612_QFN40

(U705)

audio PA

YDA145

(U401)

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DISASSEMBLY AND ASSEMBLY

Voltage regulator

Multimeter

Iron

850 heater

Constant temperature heater

Oscillograph

SERVICE TOOLS

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Computer and software download cable

Wrist grounding strap, Antistatic gloves

Wrist
grounding strap

Antistatic gloves

Software
download cable

Microscope

Solder wire, soldering paste

Metal tweezers, Screw driver, SRT-6

Plates

Metal tweezers

SRT-6

Screw driver

MTK series CPU plate

Plate

soldering paste

Solder wire

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Take off 4 screws with screw driver.

Prize up back cover.

Separate the keypad connector.

Stick LCD film.

Separate PCBA from front cover with tweezer.

Take off 2 screws with screw driver.

DISASSEMBLY

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Stick lens film.

Prize up all buckles to separate keypad.

Prize up all buckles to separate antenna.

Solder the speaker to separate the frame.

Assemble the antenna frame.

Fix the PCBA in front cover.

Finish.

ASSEMBLY

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Lock 4 screws.

Fix back cover tightly.

Fix the keypad connector.

Lock antenna screws.

Finish.

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Chapter 2

SYSTEM BLOCK DIAGRAM

Power ON/OFF principle

When the handset is on power-off status, the PWRKEY pin’s level is high, there is a pull-up resistance inside MT6253
(Power Manager Unit). When the power key is pressed, the pin PWRKEY is pulled down to low level, then MT6253 turns
on all the power supply function, and the baseband chip enters working status. Then the power key can be released, and the
CPU-baseband chip can be working normally.

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Chapter 3

Circuit instruction of CPU

Audio Process

Keypad
interface

IO interface

Camera
module

INSTRUCTION OF THE UNIT CIRCUIT

MT6253 is a new generation high-end chip made by MEDIATEK, with aQFN 11.5mm*11.5mm, up to 261pins, 0.47pitch.
MT6253 baseband chip has GSM/GPRS capability, also integrates audio and video function. MT6253 provides not only
high-quality GPRS Class 12 MODEM, high-rate data transmission service, but also multi-media applications, like 0.3M
pixels camera, mp3, mp4 etc

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Keypad Interface

When key is pressed down, the matrix status is pulled down to low. Interrupt occurs, then system can scan the cross-matrix

to judge the key’s location, so system implements corresponding function.

Baseband Crystal Oscillator

Crystal oscillator X201 provide accurate reference clock for system:

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The connection data sheet between CPU and flash

CPU

CPU BGA

Flash

Flash BGA

Ed0

AK28

Ed0

G12

Ed1

AJ25

Ed1

G11

Ed2

AN31

Ed2

F9

Ed3

AL27

Ed3

F8

Ed4

AP30

Ed4

G7

Ed5

AN29

Ed5

G6

Ed6

AL29

Ed6

F5

Ed7

AK26

Ed7

F4

Ed8

AM30

Ed8

F11

Ed9

AM26

Ed9

F10

Ed10

AK30

Ed10

G9

Ed11

AP32

Ed11

G8

Ed12

AM28

Ed12

F7

Ed13

AL29

Ed13

F6

Ed14

AN27

Ed14

G4

Ed15

AJ27

Ed15

G3

item

voitage

current

Vcore

1.2v

200ma

Vio

2.8v

100ma

Vadd

2.8v

150ma

Vtcxo

2.8v

20ma

Vrtc

1.2v

200ma

Vmem

2.8v

150ma

Vsim

2.8v

20ma

Vcs

2.8v

200ma

vcs

1.8v

150ma

MT6253 Voltage Regulator

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Battery connector

Audio frequency PA U201

Negative power supply

Charging testing

Positive power supply

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I/O connector (5PIN)

Charge input

Data download

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RF7166

Band
selection

RF Input

RF Output

ANT

RF part generally means the analog RF and IF process system ,including Antenna system、TX path、RX path、Analog

modem and Frequency Synthesizer .
RF Circuit deals with the RX and TX of wireless signal, with responsibility for the bidirectional transmission of speech and data
between the MS and BS through the air interface. In detail RX part accomplishes the AGC amplifying, mix and demodulation
of RF weak signal received from BS, The final signal output from RX part is the analog baseband I/Q signal. The final RX I/Q
will be sent to Baseband Circuit for later disposal. On the other hand TX part deals with the signal modulation, up-conversion
mix and power amplifying of analog I/Q signal received from baseband, generating burst which meets the GSM specification.
And then the bursts are transmitted to Base station through the antenna. The signal interface between
RF Circuit and Baseband is analog baseband I/Q signal. The performance of RF Circuit can directly affects the signal
transmission quality of the mobile phone.
RF transceiver is integrated in MT6253

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FM radio chip

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Chapter4

U301
Flash

U101 CPU
MT6253

U501 RF PA IC

LCD
connector

U705 BT IC

J601 camera
connector

U402 FM IC

U401 Audio PA

J301 I/O
connector

3 in 1 sim card
connector

J303 earphone
Jack

ANT
connector

J201 battery
connector

SIDE A

SIDE B

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SIDE A

SIDE B

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Chapter5

Test flowchart of test SIM card

Replace SIM

card

Base band or MT6253

may have fault.

Could not read

SIM

Clean or replace SIM

socket.

NO

NO

NO

NO

YES

YES

YES

YES

OK

End

If SIM card is

invalidation?

Connect to steady-voltage
power supply to see if
current is OK?

Power may be damaged. Test if
voltage of pin 4/5 of J502 at exactly
power on is 3V. If pin 1/2/3 has
switch of pulse voltage.

Replace U101

NO

Check if the SIM

connector is clean

TROUBLE SHOOTING

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Test flowchart of can not power on (main)

Replace

battery

May be MT6253

is fault

Could not power

on

Re-solder or
replace J201 of
battery.

Check battery
point of J402 is
OK?

NO

NO

NO

NO

YES

YES

YES

OK

End

Connect to power
supply, if it can be
power on?

If current is 30-40Mx

Update software to

the latest version

Replace U101

NO

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The test flowchart of headphone

Replace
headphone

When having a call, use a

oscillograph to test if there is

audio signal from J303 pin1/4

No sound in

headphone

Check if LS401 has
sundries or damaged

If there is sound
when switch to
loudspeaker?

NO

NO

NO

NO

YES

YES

YES

YES

Repulse LS401 or
clean it

If headphone is
connect OK or not

Remove headphone and test it by

multimeter‟s beep function. If there is

sound like „sasa‟ from headphone?

Replace headphone

Replace MT6253 CPU

NO

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Test flowchart of incoming call with no ring.

Cancel
libration /mute
mode

Can test output sound signal at
L405/L406 by oscillograph when bell
works

No sound of bell

Remove headphone
and test it by

multimeter‟s beep

function. If there is

sound like „sasa‟ from

headphone

NO

NO

NO

YES

YES

YES

YES

Replace bell
components

If it is libration / mute
mode.

If volume level is
lowest

Turn up the volume

Replace
U101/MT6253/U401

NO

Use *#84666*# No. 7
to hear if bell has
sound

NO

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Test flowchart of no display or display abnormally.

Clean and re-solder
J701

Check if there is start signal from
pin 13 of J701 and if 8 bit
address bus is normal or not

No display or

display abnormal

Replace LCD

NO

NO

NO

OK

YES

YES

If display interface
connects OK

Replace LCD/FPC

End

Replace or resolder
U101

Check LCD broken or
not or leak

NO

YES

Update to the latest

software

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The test flowchart of download failed

Replace or
re-solder J302
connector

Check whether power management and
LD0 have output voltage normally and
whether there is broken of power supply.

Can not download

Check conditions outside
the mobile, such as
configuration of software,
cable, power, PC etc.

Whether
mobile is
power on?

NO

NO

NO

NO

YES

YES

YES

YES

YES

OK

Replace or re-configure.

Check whether J301
connector is false solder
or damaged.

Connect download cable.
Check whether current is
larger than normal.

Disconnect cable immediately
and touch chip gently to check
whether the chip is heat.

Test VCORE, VDD, VADD,
VTCXO, VRTC, VMEM and clock
signal of 26MHZ、32KHZ.

Replace U101

NO

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Chapter6

Instruction of SW update

1. Install the USB driver without the USB cable plugged into the computer.

2. After it is ok, plug the cable then check the device manager as the picture below:

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3.Double click to run FlashTool_v3.1004

Choose right com port

4. You better choose auto format FAT in “Format FAT” like belows,

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Choose “Auto Format FAT”,

Choose it

Pick this

5. Tip Download Agent， choose MTK-ALLInOne.bin

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6. Tip Scatter-loading to choose “ txt ” file in the SW folder, such as scat25_08A_GEMINI. Then the BOOTLOADER

双击

Double
click

and ROM will also set to be well .

7.Keep phone off , and tip Download to run the program, and the red bar appear, it shows the phone can connect with this tool
successfully, then it will write data into phone and tool will show the blue bar , after Ok appear with the green circle. The
process finish.

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 Check if the SW is correctly

8.Power on the phone and input“*#84666*#”， check its version number on the first option.

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Chapter7

FUNCTION TEST

Press “ *#84666* #” to check these items in stand by mode:

1. Version: to check the version of the software

2. Echo Loop: blow to the mic, the receiver will have a sound

3. Key: press relevant keys appear in the screen

5. Libration: The cellphone will librate

6. Lond SPK: there will be a sound from the speaker

7. Ring: press start there will be some music from the speaker

8. LED: press confirm button to check if LED is normal

9. LCD: LCD will Auto Display

11. Receiver: there will be a sound from the receiver

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Chapter8

PARAMETER SETTING INSTRUCTION

China mobile as an example, other countries please inquire the local operator

1. WAP parameter setting instruction

1) Data Account Process: Menu→Services→Data Account
GSM Data: Account Name: (default)
Number: 17266
User Name: WAP
Password: WAP
Line Type: ISDN
Speed: 9.6 Kbps
DNS: 010.000.000.172
GPRS: Account Name: (default)
APN: cnwap
User Name: WAP
Password: WAP
Auth. Type: (default)

2) WAP setting process: Menu→Services→WAP→Settings→Edit Profile
Edit Profile: Rename Profile: Optional
Homepage: http://monternet.com
Data Account: GSM/GPRS
Connection Type: HTTP (Proxy Address: 010.000.000.172)
Username: Optional
Password: Optional
After setting as above, the WAP is ready.

2. MMS parameter setting instruction (Premise is WAP is valid)

Setting process: Menu→Messages→MMS→Message Settings→Server Profile→Edit profile
Edit Profile: Rename Profile: Same as WAP Profile name
Homepage: http://mmsc.monternet.com
Data Account: Same as WAP Data Account
Connection Type: Same as WAP Data Account
Username: Optional
Password: Optional
After setting as above, the MMS is ready.

3. Email parameter setting instruction (Premise is WAP is valid)

1) GPRS setting process: Menu→Services→Data Account→GPRS
Edit Profile: Account Name: Optional
APN: cmnet

2) Email Profile setting process: Menu→Messages→Email→Email Profile

A. Outgoing server: stmp.126.com (depend on the user‟s Email website )

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E-Mail Address: Full E-Mail Address of the user‟s
Password: Password of the use‟s E-Mail

B. Incoming server: pop3.126.com (depend on the user‟s Email website )

E-Mail Address: Full E-Mail Address of the user‟s
Password: Password of the use‟s E-Mail

After setting as above, the MMS is ready.

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Chapter9

CATCHER INSTRUCTION

General: The figures in this document help to understanding, and they may not be exactly the same as

showed in your computer. Contact us please when you have any queries.

1 Install the USB driver if not yet.

1.1 Run the USB driver without the upgrade cable plugged into the computer.

Figure 1

1.2 After the installation is completed, plug the upgrade cable into the computer‟s USB connector, and then check
the device manager as in figure 2:

Figure 2

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2 set the phone to prepare for using Catcher.

Open the phone and input “*#84666364*#” to enter the setting screen. In sequence enter DEVICE, UART, and

TST config. Choose UART1 in the first choice and choose NONE in the second choice then Clink done, the
phone will restart in 3 seconds. After the phone restarts, power it off.

3 choose the Database of the phone’s software.

3.1 run “Catcher.exe”, choose Config →.Set Database Path. The figures (figure 3, figure 4, and figure 5) occur in

sequence as below.

Figure 3

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Figure 4

Figure 5

3.2 Clink the button “...” in figure 5 to choose the Database file of the master phone or slave phone (for example

“BPLGUInfoCustomSrcP_MT6226M_S01_X6+_FLP_06_12_V3_2-TN-MP-5B-QN” file ). Refer to figure 6
showed as below:

Figure 6
When you examine the master phone‟s problems, choose the master phone software‟s database file, and when
the slave phone‟s problems, the slave phone‟s database file.
The database in the phone must be exactly the same as the chose database for Catcher, or the figure 14 will
occur when the Catcher work.

4 enter Logging mode and choose the right COM

4.1 clink the “Logging code” button in the red note in figure 7. Then figure 8 occurs.

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Figure 7

Figure 8

4.2 clink button “Configure RS232” in figure 9, then figure 10 occurs, choose the right COM in Port option, and
clink OK.

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Figure 9

Figure 10

5 use the Catcher to record debug information

5.1 clink the button “connect” in figure 11, clink the button “Default Filter” in figure12, select “Field Trial” button in
figure 13, and then clink “set” in Figure13.

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Figure 11

Figure 12

Figure 13

5.2 Clink “Filter” in figure 14, choose some items in figure 15, and then clink ok in figure 15. (Please query us if
you need to choose the filter settings)

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Figure 14

Figure 15

5.2 connect the upgrade cable to the phone and power on the phone. If the database in the phone is not exactly
the same as the chose database in Catcher, figure 16 occurs (for example, different software versions and wrong
cable connectors lead to the difference between the databases). You have to clink “EXIT” and make the
databases the same.

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Figure 16

5.3 The catcher records primitive information as showed in figure 17. Clink the button “clear” in figure 18 to clear
the useful primitive information. Then the phone user carries on some operations to the phone to make the
failures recur. After the wanted failures occur wholly, clink the button “disconnect” in figure 19. You can save the
“.clg” file now as showed in figure 20, and name it. The “.clg” file is that needed for analyzing the failures of
phone.

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Figure 17

Figure 18

- 43 -

Figure 19

Figure 20

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