ViewSonic VSXXXXX service manual ViewSonic VG2427wm, VG2427wmSM Rev a Mar

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Service Manual

ViewSonic VG2427wm

Model No. VSXXXXX 23.6” Color TFT LCD Display

(VG2427wm_SM Rev. 1a Mar. 2009)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Contents VG2427wmSM Rev a Mar ViewSonic VG2427wmTdrmnddywbvspc TdrmnddkwbvspcTdrmnddcwbvspc TdrmnddbwbvspcTable of Contents Safety Precautions Precautions and Safety NoticesProduct Safety Notice Service NotesCorrect 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 settingMain Menu Controls Audio AdjustControl Explanation Page Page Main Board Circuit DescriptionPin Assignment Page Page Page Page Name Pin # Pin DescriptionsFunction Typical Application Power BoardComp GND OUT VCC Block Diagram PinIC801 TA9687GN Pin Diagram Functional Block DiagramPin Description Pin No Names White balance, Luminance adjustment Adjustment ProcedureEnter into Burn/in mode Enter into the factory modeISP Board Firmware Upgrade ProcedureEquipment 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 Mosfet ON/OFFDIM 0R05 1/10W 5% Schematic DiagramsFB402 TO252 0402 Power Board Power XFMR7 IC with Heat-sink90G6295-3 TPV Model Key BoardPCB 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 Cbpc LabelCONN.6P 1.0 DIP Wafer 30P 2.0MM DIP Dual ROWPage RST Chipr RST Chip MAXChip 22PF 50V NPO Bead 300Ω Chip 5PF 50V NPOChip Bead Chip Bead FCM2012VF-301T07 BullwillPIN PWPC9D41MQWU Power Board Dome Switch 5PCSUDZSNP5.6B Rohm TRA LMBT3904LT1G 200MA/40V SOT-23 LRCRST Ntcr 8OHM £«£20£¥ 4A Xianzheng IC PC123Y22FZ0FCAP CER 56PF J 3KV Choke by LI TAHeat Sink Screw HS1Diode SP1060 ITO-220 Secos Screw HS2RST Chipr 6.2KOHM +-5% 1/10W Yageo RST Chipr 3.6K1ST Chipr RST Chipr 1KX7R RST Chipr 820KOHM +-5% 1/4W FenghuaNPO Jumper Wire Power Board PCBChip Bead HCB3216KF-800T30 Bullwill BAV70 SOT23 by PAN JITVSC 23.6 Hinge Assy ConnectorHT POT Label Pallet LabelUSB Board PCB Diode ESD EGA 10603V05A1-B InpaqRST Chip MAX 0R05 1/4W Diversity of Tdrmnddcwbvspc compared with Tdrmnddkwbvspc Different Parts ListLocation Part Number Description Diversity of Tdrmnddbwbvspc compared with TdrmnddkwbvspcName Company Add Tel Mail Title Fax Reader’s Response