Related Manuals for FLY Q120 TV
Summary of Contents for FLY Q120 TV
- Page 1 Q120 TV Maintenance Manual Q120 TV Maintenance Manual Document Name ：Q120 TV Maintenance Manual Version：V1.0 Draft date： Document code：...
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Page 2: Table Of Contents
Q120 TV Maintenance Manual Table of Contents 1. Circuit diagram instruction .................3 1.1 Main board explored view................3 1.2 Detailed Description of Circuit Chart............4 1.3 RF circuit .....................4 1.4 Base band circuit ..................5 1.5 Function circuit....................6 2．Fault maintenance ....................8 3 Trouble shooting and flow chart ................9 3.1 Unable to power on the handset ..............9... -
Page 3: Circuit Diagram Instruction
Q120 TV Maintenance Manual 1. Circuit diagram instruction 1.1 Main board explored view... -
Page 4: Detailed Description Of Circuit Chart
Q120 TV Maintenance Manual 1.2 Detailed Description of Circuit Chart RF PA+switch 射频PA Speaker 扬声器 U102 U102 麦克 高频滤波 High Frequency Filter 器U103 U103/U104/U105 摄像头 Camera U202 按键板 SIM card U201 Keypad SIM卡 切换 Board 开关 马达 Switch SIM卡 Motor SIM card 蓝牙... -
Page 5: Base Band Circuit
Q120 TV Maintenance Manual frequency discrimination to this signal and the mixed signal of TXVCO signal and RFVCO output signal. The discriminator outputs the signal control RFVCO and RFVCO phase is enabled to lock at the phase of TXIF signal. TXVCO output RF is still decided by RFVCO frequency. -
Page 6: Function Circuit
Q120 TV Maintenance Manual 1.5 Function circuit FM circuit U802 FM receiving chip RDA5802E... - Page 7 Q120 TV Maintenance Manual BT circuit MT6612CN-L U701 BT receiver chip...
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Page 8: 2．Fault Maintenance
Q120 TV Maintenance Manual 2．Fault maintenance Note: The PCBA repairing is a very important work during the final production of cellular phones. The speed and quality of repairing decides the yield and production efficiency. The repair idea is very important for a good repairing technician. Make sure not to... -
Page 9: Trouble Shooting And Flow Chart
Q120 TV Maintenance Manual 3 Trouble shooting and flow chart 3.1 Unable to power on the handset... -
Page 10: No Ring Tone
Q120 TV Maintenance Manual 3.2 No ring tone... -
Page 11: Lcd Display Fault
Q120 TV Maintenance Manual 3.3 LCD display fault... -
Page 12: Charging Fault
Q120 TV Maintenance Manual 3.4 Charging fault... -
Page 13: Camera Fault
Q120 TV Maintenance Manual 3.5 Camera fault Failure to use camera Check camera for damage Replace new camera Check if camera is soldered or Solder camera connector assembled well or Re-assemble camera Mark the mainboard Check camera circuit for fault... -
Page 14: Fail To Identify Sim Card
Q120 TV Maintenance Manual 3.6 Fail to identify SIM card... -
Page 15: Mic Fault
Q120 TV Maintenance Manual 3.7 MIC fault... -
Page 16: Keypad Fault
Q120 TV Maintenance Manual 3.8 Keypad fault Keypad doesn’t work correctly Check : DOME is pasted and Paste the DOME or keymat is assembled correctly assemble keymat again Is there any dirty on keypad Clean keypad surface and surface? test... -
Page 17: Receiver Fault
Q120 TV Maintenance Manual 3.9 Receiver fault No voice in receiver Is receiver ok ? Replace new receiver No broken wire Check receiver connector for Solder receiver connector soldering defect Check receiver circuit for any Mark the mainboard with fault... -
Page 18: Vibrate Fault
Q120 TV Maintenance Manual 3.10 Vibrate fault... -
Page 19: Fm Fault
Q120 TV Maintenance Manual 3.11 FM fault... -
Page 20: No Signal
Q120 TV Maintenance Manual 3.12 No signal No RF signal Is RF antenna assembled correctly? Re-assemble BT anntena Is the phone set into Flying Return to Normal mode mode? Mark the mainboard with Check RF circuit for any fault analysis result... -
Page 21: Failure To Identify T-Flash Card
Q120 TV Maintenance Manual 3.13 Failure to identify T-flash card Failure to read T-flash card Is T-flash card inserted correctly? Re-insert T-flash card Check: the T-flash card is ok? Replace new card Clean socket or replace Check card socket is clean and... -
Page 22: Earphone Fault
Q120 TV Maintenance Manual 3.14 Earphone fault Failure to use earphone Check: earphone is ok? Replace new earphone No damage Check earphone connector for Solder earphone connector soldering defect Is there any foreign matter in Clean or replace connector earphone connector? -
Page 23: Unable To Use Usb
Q120 TV Maintenance Manual 3.15 Unable to use USB...