AOC 919SWA manual Key Board

Page 35

19" LCD Color Monitor

AOC 919Swa

9.2.3 Key Board

OSDis unstableornot working

Is Keypad board connecting normally?

OK

Is Button Switch normally?

OK

IsKeypadboardnormally?

OK

Check mainboard

NG

NG

NG

ConnectKeypadBoard

ReplaceButtonSwitch

ReplaceKeypadBoard

35

Image 35

Contents Service IVO M190MWW3 Revision Date Revision HistoryT99LHDDBWKA1ANE T992HDDBWKA2ANEMonitor Specifications LCD Monitor Description Monitor Block DiagramControl Buttons Adjusting the PictureOperating Instructions General InstructionsDCR Status LED Color LED IndicatorOSD DDC-CIPin Number Pin Side of the Signal Cable Input/Output SpecificationInput Signal Connector Factory Preset Display ModesTPM190A1 Panel SpecificationDisplay Characteristics M190MWW3M190MWW3 TPM190A1 Optical CharacteristicsBack Light Unit Electrical CharacteristicsTFT LCD Module LCD Color Monitor AOC 919Swa Software Flow Chat Block DiagramRemark DDC1SDA DDC1SCL Eeprom M24C02-WMN6TP Electric Block DiagramMain Board Flash MemoryAudio Inverter / Power BoardMain Board SchematicLCD Color Monitor AOC 919Swa Output R438 OHM 2W Power 8XFMR Power BoardGND 1 009G6005 IC with Heat-sink90G6295-3 PCB Layout LCD Color Monitor AOC 919Swa Power Board LCD Color Monitor AOC 919Swa Key Board Equipments and Tools Requirement MaintainabilityNo power Trouble ShootingNo picture LED orange OK NG White ScreenPower Board LED No Backlight Key Board White- Balance, Luminance Adjustment LCD Color Monitor AOC 919Swa Monitor Exploded View Description Location Description Remark BOM ListSUB 15PIN Vertical Conn with Screw ConnectorPW9941LHD1SMT Power Board for SMT HS1 Cbpc LabelKEC 2N3904S-RTK/PS IC AP1117E18LA SOT223-3L AnachipIC M24C04-WMN6TP SO8 PMBS3906/PHILIPS-SMT06RST Chip 390R 1/16W 5% Fenghua OHM Bead Chip 22PF 50V NPOChip Bead Chip Bead 300OHM1ST Chipr FET FDS8958A SO-8RST Chip MAX RST Chipr 5.1KX7R RST Chipr MAX0R05 4A 1/4W FenghuaRST Chipr NPODiode LBAV70LT1G SOT-23 LRC RLZ 5.6B Llds PW9941LHD1AI Power Board for AITact Switch 2PIN Jumper WirePower Board PCB