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FLY IQ449 Service Manual
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FLY IQ449 Service Manual

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IQ449 service manual
Fly IQ449 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.

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Summary of Contents for FLY IQ449

  • Page 1 IQ449 service manual Fly IQ449 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.
  • Page 2 IQ449 service manual Product Hardware Introduction SC7710 SC7710 PMIC SR3131 Transceiver Camera DSP/MMP SC7710/ RFPA GSM:SKY77590;WCDMA PA:SKY77761 Base Chip Set BK3513 BT/FM SC7710 Audio CODEC&PA KSLCBBL1FB4G3A Memory MSG21331 TP IC 3.5” ，IC：hx8357D CP2123/ Backlight Driver 200W，IC：SP2518 CAMERA Peripheral Memory Card...
  • Page 3 IQ449 service manual INTRODUCTION Fly W950 Main function * 3.5’ 480*320 TFT LCD *SC7710 (400MHz)，4Gb+2Gb *double SIM stand by *Camera：2MP Camera AF *BT, FM ,WIFI *Multimedia player *T-Flash Up to 32 GB *MP3,AAC, MIDI ,WAV *CTP Spec： Network 2G: GSM/GPRS 900/1800MHz Scream: 3.5’...

  • Page 4: Service Tools

    IQ449 service manual SERVICE TOOLS Iron Hot air gun Voltage regulator Multimeter Solder wire, soldering paste Tweezers Driver Wrist groun Pick Antistatic Metal tweezers, Screw driver etc Computer and software download cable...

  • Page 5: Disassembly And Assembly

    IQ449 service manual DISASSEMBLY AND ASSEMBLY...
  • Page 7 IQ449 service manual...
  • Page 8 IQ449 service manual CIRCUIT INSTRUCTION BB CPU MEMORY WIFI BTBK3 SC7710 BCM40181 USC771...
  • Page 9 IQ449 service manual AUDIO jack CARD...
  • Page 10 IQ449 service manual SYSTEM BLOCK DIAGRA...
  • Page 11 IQ449 service manual UNIT CIRCUIT PRINCIPLE INTRODUCTION Baseband CPU circuit introduction for power supply...
  • Page 12 IQ449 service manual...
  • Page 13 IQ449 service manual...
  • Page 14 IQ449 service manual...
  • Page 15 IQ449 service manual BT+WIFI circuit...
  • Page 16 IQ449 service manual Audio PA circuit RF circuit...

  • Page 18: Troubleshooting Guide

    IQ449 service manual TROUBLE SHOOTING GUIDE Cannot switch on Phone connect current is about 50-100mA and cannot switch on Update software Check and replace Check power output： I/O connector Centre supply VCORE 1.2V Logical supply VDD28 2.8V Audio supply VDD18 1.8V Replace or Memory supply VMEM 1.8V...
  • Page 19 IQ449 service manual BT+FM chip cannot work normally BT、FM can’t open， Can’t work normal Software update and check Software update the function is OK or not Check U7100 Pin6 have Measure U0100 PIN 2.8V supply voltage or not M10 is 2.8v or not Check C7103 have 1.8V...
  • Page 20 IQ449 service manual cannot download cannot download Check phone Check battery is OK or not switch on or not Check applications, Re-install USB driver and USB cable, software is replace USB cable OK or not Re-solder or replace I/O Check I/O connector is...
  • Page 21 IQ449 service manual Does not charge Remind error during charge Remind: “fault connection” “battery overheat” Change battery Re-flash SW Check battery connector testing Pin, if the bias resis and vatge be normal. Check Q6100 R6100 R6101 be Replace normal. re-solder...
  • Page 22 IQ449 service manual Stand-by short time Stand-by short time Change battery Re-flash SW Connect the phone with Voltage regulator, the current should be zero Power on the phone, check the if working current be By touch to Check and normal（no exceed 1000mA）...
  • Page 23 IQ449 service manual No display or display abnormality No display or display abnormality after power on Check LCD if damage or Change LCD liquid flow out Check LCD FPC is OK Clean/re-solder or not Change or re-solder U0100 SC7710...
  • Page 24 IQ449 service manual No/Low sound from Speaker No sound or noise Remove the speaker and check if there’s the ring is measure with multimeter to normal see if there’s any sound. Set the phone as The phone is in Replace speaker.
  • Page 25 IQ449 service manual Receiver low voice or no voice Receiver is low. Set the phone as handsfree mode Check if the receiver Replace the is broken or damaged receiver. Test if there’s sound from Replace receiver receiver with multimeter Measure the signal...
  • Page 26 IQ449 service manual CIT TEST 1. Insert T-Flash card and SIM card. After power-on, press *#789# to enter factory mode for CIT test. 2. Choose Full test menu. To do full test. 3. Test relative items one by one: MMI UI-Test operations guide...