ViewSonic VSXXXXX service manual

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Contents VG2427wmSM Rev a Mar ViewSonic VG2427wmTdrmnddbwbvspc TdrmnddkwbvspcTdrmnddywbvspc TdrmnddcwbvspcTable of Contents Service Notes Precautions and Safety NoticesSafety Precautions Product Safety NoticeCorrect Methods Incorrect Methods Handing and Placing MethodsPage Specification Front Panel Function Control Description Following tips may help you optimize your display Do the following to adjust the display settingAudio Adjust Main Menu ControlsControl Explanation Page Page Main Board Circuit DescriptionPin Assignment Page Page Page Page Pin Descriptions Name Pin #Function Typical Application Power BoardComp GND OUT VCC Block Diagram PinIC801 TA9687GN Pin Diagram Functional Block DiagramPin Description Pin No Names Enter into the factory mode Adjustment ProcedureWhite balance, Luminance adjustment Enter into Burn/in modeFirmware Upgrade Procedure ISP BoardEquipment needed PC LPT Hardware Connect status Update the NOVATEK’S firmwarePage Page Install software DDC Key in ProcedureFor analog Page Troubleshooting Flow Chart Block Diagram ON/OFF MosfetDIM 0R05 1/10W 5% Schematic DiagramsFB402 TO252 0402 Power Board Power XFMR7 IC with Heat-sink90G6295-3 Key Board TPV ModelPCB Name Upstream USB BoardPCB Layout Diagrams Page Power Board Page Key Board USB Board Page 10.1 EPL Exploded Diagram and Exploded Parts ListDescription Part Number Qty 10.2 PPL Location Part Number Description Remark Recommended Spare Parts ListWafer 30P 2.0MM DIP Dual ROW Cbpc LabelWafer CONN.6P 1.0 DIPPage RST Chip MAX RST ChiprChip 22PF 50V NPO Chip Bead FCM2012VF-301T07 Bullwill Chip 5PF 50V NPOBead 300Ω Chip BeadTRA LMBT3904LT1G 200MA/40V SOT-23 LRC Dome Switch 5PCSPIN PWPC9D41MQWU Power Board UDZSNP5.6B RohmChoke by LI TA IC PC123Y22FZ0FRST Ntcr 8OHM £«£20£¥ 4A Xianzheng CAP CER 56PF J 3KVScrew HS2 Screw HS1Heat Sink Diode SP1060 ITO-220 SecosRST Chipr 1K RST Chipr 3.6KRST Chipr 6.2KOHM +-5% 1/10W Yageo 1ST ChiprRST Chipr 820KOHM +-5% 1/4W Fenghua X7RNPO BAV70 SOT23 by PAN JIT Power Board PCBJumper Wire Chip Bead HCB3216KF-800T30 BullwillPallet Label ConnectorVSC 23.6 Hinge Assy HT POT LabelDiode ESD EGA 10603V05A1-B Inpaq USB Board PCBRST Chip MAX 0R05 1/4W Diversity of Tdrmnddbwbvspc compared with Tdrmnddkwbvspc Different Parts ListDiversity of Tdrmnddcwbvspc compared with Tdrmnddkwbvspc Location Part Number DescriptionName Company Add Tel Mail Title Fax Reader’s Response