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

MT6571A/E

PMIC

MT6323

Transceiver

MT6571A/E

Camera DSP/MMP

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RFPA

VC5278

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

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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

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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

upDownlo

ad cable

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DISASSEMBLYAND ASSEMBLY

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CIRCUIT INSTRUCTION

PCBAA-Side

RF PA

VC5278

MT6571A/E

Memory

KE4CN2L2HA5A2A

BT/WIFI/GPS/FM

MT6627*

Audio PA

AW8736FCR

PMIC

MT6323

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SYSTEM BLOCK DIAGRA

UNIT CIRCUIT PRINCIPLE INTRODUCTION

Baseband CPU circuit introduction for power supply

CPU MT6571A/E part circuit

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