LG MF-FE422T Uživatelský manuál

MP3PLAYERSERVICEMANUALCAUTIONBEFORESERVICINGTHEUNIT,READTHE"SAFETYPRECAUTIONS"INTHISMANUAL.P/N:3829RET006MJANUARY,2005MODEL:MF-FE421(F)MF-FE

-2-5-5.Radiocheck6.FMTransmittercheckRadioModePoweronChannelseekiscountednormally?SeekTU4016,7iscountednormally?3VcomesoutformTU401#4?TU401checkL404,L

-2-6-INTERNALBLOCKDIAGRAMOFICsMainCPUSTMP3520?BLOCKDIAGRAMTunerModuleMP301?BLOCKDIAGRAMRightOutLeftOutVDD_FM41,3,5,8I2CClockI2CData67

-2-7-ELDriverD355B?BlockDiagram

-2-8-MEMO

BLOCKDIAGRAM2-92-10

2-112-12SCHEMATICDIAGRAM?MAINSCHEMATICDIAGRAM

2-132-14?JACKSCHEMATICDIAGRAM

2-152-16?MEMORYSCHEMATICDIAGRAM

2-17 2-18PRINTEDCIRCUITDIAGRAMS?MAINP.C.BOARD

2-192-20?JACKP.C.BOARD

-1-1-[CONTENTS]SECTION1.GENERAL?ESDPRECAUTIONS...1-2?SPECIFICATION...

2-212-22?MEMORYP.C.BOARD

3-13-2260261262263264274275273272A42271270290291280451451451A46292A45A45283451282281451A41250254450A44251255253252450450NOTE)Referto"SECTION4REPL

-1-2-ESDPRECAUTIONSElectrostaticallySensitiveDevices(ESD)Somesemiconductor(solidstate)devicescanbedamagedeasilybystaticelectricity.Suchcomponentscommo

-1-3-SPECIFICATIONSTHEOTHERCOMPONENTS(ACCESSORIES)?MemoryCapacity...MF-FE421:128MBMF-FE422:256MBMF-FE425:512

-1-4-IDENTIFICATIONOFCONTROLSUSBIn/OutEarphoneconnectorBatterycoverexternalinputterminalHOLDPlay/PausePower(ON)/(OFF)REW/FFMICRECBUTTONPresetbuttonB.M

-2-1-TROUBLESHOOTINGAssemblesetUSBconnectiontoPCisOK?IsLCDturnedonwhenpressingplaykey?IsMP3played?MICrecordingworksproperly?Linerecordingworksproperly

-2-2-1.USBoperationconnectionUSBconnectiontoPCPCdetectsUSB?Set'sL463bothterminalvoltageis5V?JK461check.BtoBconnectorconnectionorPCBPatterncheck.I

-2-3-2.PowercheckInsertbatteryWhenpressingplaykey,ELlisghts?L403voltageis1.5V?Whenpressingplaykey,oneofL403pinsdoesnormalswitching?(about3.2Von/off)C4

-2-4-3.MP3playcheck4.RecordingcheckMP3ModepowerOnMP3ModepowerOnPressRECkeytwice.Stopbypressingplaykey,thenstartplayingbypressingplaykeyagain.Voiceisre