Sharp SGH-T519 manual LCD Display part

Page 54

Flow Chart of Troubleshooting

10-1-4. LCD Display part

LCD display is abnormal

Check LCD connection

and replace LCD

 

NO

pin#14 of HDC302

YES

 

Check LCD

 

LCD Backlight is on?

 

 

is high?

 

 

 

 

 

 

 

 

Check HDC302

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pin#7 of U404

 

 

 

 

 

 

 

 

is high?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

①

 

 

 

 

 

C218 > 3.5V?

 

NO

 

Check C218

 

 

 

 

 

 

 

 

 

 

 

 

 

Recharge Bat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pin#6 of U404

NO

 

 

 

 

 

 

 

 

 

Check UCP201

 

 

 

 

 

is high?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

② YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHeck U404

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C338, C340 is 2.9V?

NO

 

YES

 

pin#4 of ZD304

NO

is LOW?

 

YES

 

Are there anysignal

NO

at pin#6 of ZD304?

 

YES

 

IS there any

YES

problem at F301,

 

F302, F303, F304

 

NO

Check U400

Check UCD301

③

Check U400

④

Replace or resolve F301, F302, F303, F304

10-8

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Page 53 Page 55
Image 54
Page 53 Page 55
Contents GSM Telephone Contents PCB Diagrams Block Diagrams Code No. GH68-12034A 2006 . Rev.1.0 Safety Precautions Repair PrecautionESDElectrostatically Sensitive Devices Precaution Specification General IntroductionSpecification GSM General SpecificationGSM TX power class Power GSM850 ControlEdge TX Power Level Power GSM850 Control LevelProduct Function Main FunctionCircuit Description RF Circuit Description of SGH-T519Power AMP PAM400 Baseband Circuit description of SGH-D407WM8955LUCD401 Samsung Proprietary-Contents may change without notice Test Command & Test Procedure Calibration ProgramTx Power Tune up Procedure Samsung Proprietary-Contents may change without notice Samsung Proprietary-Contents may change without notice Array course control Downloading Binary Files Pre-requsite for DownloadingS/W Downloader Program Samsung Proprietary-Contents may change without notice Select theFlash&Verify Browse #1234# Exploded View and its Partslist Cellular phone Exploded ViewCellular phone Parts list CBF INTERFACE-DATA Link Cable Disassembly and Assembly instructions DisassemblyDetach a LCD from LCD braket Assembly Absorber PBA Solder the intenna Place the camera SCREW.4 Point Main Electrical Parts List IC-POSI.FIXED REGIC-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 Flow Chart of Troubleshooting Power on10-2 Flow Chart of Troubleshooting 10-3 Initial YES END10-5 Sim Part Voltage is 2.8V at C306?10-7 LCD Display part 10-9 10-10 Microphone Part 10-12 Speaker Part YES10-14 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 10-2. RF GSM900 RXFlow 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 PCB Diagrams Fpcvol140 Block Diagrams Reference data Reference Abbreviate
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