FLY IQ4400 Manuale utente
FLY SERVICE SUPPORT
Fly IQ4400 Service Manual
CAUTIONS
Please refer to the phone’s user’s guide for instructions relating to operation, care, and maintenance, which include important
safety information.
Servicing and alignment must be undertaken by qualified personnel only.
Ensure all work is carried out at an anti-static workstation and that an anti-static wrist strap is worn.
Use only approved components as specified in the parts list.
Ensure all components, modules, screws, and insulators are correctly re-fitted after servicing and alignment
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.
Product Hardware Introduction
Base Chip Set
BB
MT6571A/E
PMIC
MT6323
Transceiver
MT6571A/E
Camera DSP/MMP
/
FLY SERVICE SUPPORT
RFPA
VC5278
FM
MT6627*
BT
MT6627*
Audio CODEC&PA
AW8736FCR
Memory
KE4CN2L2HA5A2A
TP IC
/
Peripheral
Configuration
LCD
4.0”，IC:FT6206
Backlight Driver
/
CAMERA
Rear camera:2.0 IC：SP2529 Front camera:0.3IC：SP0A19
Memory Card
/
Antenna
PIFA antenna
Basic
Performance
Indicators
Leakage current
0.2mA
Standby current
5.2mA
Call current as
maximum power
GSM900：32.4dbm
DCS1800：29.4dbm
Board‐Tri SIM stand
by level power
CH1
32.40 dBm
CH63
32.40 dBm
CH124
32.40 dBm
CH512
29.20 dBm
CH699
29.20 dBm
CH885
29.20 dBm
Board‐level receiver
sensitivity
CH1
-108.00
CH63
-108.00
CH124
-108.00
CH512
-107.00
CH699
-107.00
CH885
-107.00
INTRODUCTION
FLY SERVICE SUPPORT
Spec：
Network 2G: GSM/GPRS 900/1800MH z
Scream: 4.0, 480*800 WVGA LCD
Bluetooth：3.0+HS A2DP HFP EDRD
Camera：Rear 2.0MP Camera AF
Front camera:0.3MP
Size：121*68*9.8mm
Battery:1300mAh
Fly IQ444 Main function
* 4.0, 480*800 TFT LCD
*MTK6571 (78MHz)，32Mb+16Mb
* Dual SIM stand by
*Camera：Rear 2.0MP Camera AF
Front camera:0.3MP
*BT, FM
*Multimedia player
*T-Flash Up to 32 GB
*MP3,AAC, MIDI ,WAV
*Normal keypad
FLY SERVICE SUPPORT
SERVICE TOOLS
Voltage regulator
Multimeter
Iron
Hot air gun
Solder wire, soldering paste
Computer and software download cable
Metal tweezers, Screw driver etc
Pick
Driver
Tweezers
Wrist
groun
ding
strap
Antistatic
gloves
SW
upDownlo
ad cable
FLY SERVICE SUPPORT
DISASSEMBLYAND ASSEMBLY
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FLY SERVICE SUPPORT
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FLY SERVICE SUPPORT
CIRCUIT INSTRUCTION
PCBAA-Side
RF PA
VC5278
BB
MT6571A/E
Memory
KE4CN2L2HA5A2A
BT/WIFI/GPS/FM
MT6627*
Audio PA
AW8736FCR
PMIC
MT6323
FLY SERVICE SUPPORT
SYSTEM BLOCK DIAGRA
UNIT CIRCUIT PRINCIPLE INTRODUCTION
Baseband CPU circuit introduction for power supply
CPU MT6571A/E part circuit
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1
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