Sharp SGH-T519 manual Flow Chart of Troubleshooting, Power on

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10. Flow Chart of Troubleshooting

10-1.Baseband

10-1-1. Power ON

'Power ON' Does not work

Check the current consumption

Current consumption	NO
≥100mA ?

YES

Check the V bat. voltage

Download again

Voltage ≥ 3.3V ?

YES

NO

Charge the Battery

Check the pins of UCD301

①

C316 ≥ 1.8V ?

YES

NO

Check UCD301 and C316

C318 and C315 = 2.8V?

YES

NO

②

NO

C312=1.5V?

YES

Check UCD301 and C312

Check the clock signal

at pin #3 of TCX101 or C129 Freq.=26MHz,Vrms ≥300mV

YES

Check the Initial operation

END

NO

10-1

Check the clock generation circuit (TCX101, U101 pin#4)

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

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Contents GSM Telephone Contents PCB Diagrams Block Diagrams Code No. GH68-12034A 2006 . Rev.1.0 Repair Precaution Safety PrecautionsESDElectrostatically Sensitive Devices Precaution General Introduction SpecificationGSM General Specification SpecificationPower GSM850 Control GSM TX power classPower GSM850 Control Level Edge TX Power LevelMain Function Product FunctionRF Circuit Description of SGH-T519 Circuit DescriptionBaseband Circuit description of SGH-D407 Power AMP PAM400WM8955LUCD401 Samsung Proprietary-Contents may change without notice Calibration Program Test Command & Test ProcedureTx Power Tune up Procedure Samsung Proprietary-Contents may change without notice Samsung Proprietary-Contents may change without notice Array course control Pre-requsite for Downloading Downloading Binary FilesS/W Downloader Program Samsung Proprietary-Contents may change without notice Select theFlash&Verify Browse #1234# Cellular phone Exploded View Exploded View and its PartslistCellular phone Parts list CBF INTERFACE-DATA Link Cable Disassembly Disassembly and Assembly instructionsDetach a LCD from LCD braket Assembly Absorber PBA Solder the intenna Place the camera SCREW.4 Point IC-POSI.FIXED REG Main Electrical Parts ListIC-POWER Supervisor 2007-000157 R428 2007-007316 R304 CER,CHIP 2203-000254 C213 2203-005061 C451 2203-006121 C306 2203-006423 C301 TA,CHIP OSCILLATOR-VCTCXO Power on Flow Chart of Troubleshooting10-2 Flow Chart of Troubleshooting 10-3 YES END Initial10-5 Voltage is 2.8V at C306? Sim Part10-7 LCD Display part 10-9 10-10 Microphone Part 10-12 YES Speaker Part10-14 Flow Chart of Troubleshooting 10-15 Receiver Part Flow Chart of Troubleshooting 10-17 Camera part 10-19 Flow Chart of Troubleshooting 10-20 10-1-9. Mp3 part 10-22 Flow Chart of Troubleshooting 10-23 Flow Chart of Troubleshooting 10-24 GSM900 RX 10-2. RFFlow Chart of Troubleshooting 10-26 GSM1800 RX GSM1900 RX GSM850 RX GSM850 / GSM900 TX Flow Chart of Troubleshooting 10-31 DCS1800 & PCS1900 TX 10-33 Fpcvol PCB Diagrams140 Block Diagrams Reference Abbreviate Reference data