ViewSonic VSXXXXX service manual IC801 TA9687GN, Pin Diagram Functional Block Diagram

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IC801 TA9687GN

TA 9687 is a high performance, cost-effective CCFL (Cold Cathode Fluorescent Lamp) controller designed for driving large-size Liquid Crystal Display (LCD) applications requiring 2 to 6 CCFLs.

The controller converts unregulated DC voltages into a nearly sinusoidal lamp voltage and current waveforms.

The TA 9687 supports full-bridge power conversion topologies while maintaining high-efficiency operation. The controller provides a soft-start operation, current and voltage regulation, overvoltage and over-current protection, high drive capability.

The control logic provides a regulated ignition voltage and appropriate protection features for over-voltage or over-current conditions.

The TA 9687 offers a high level of integration, while maintaining flexibility and high-efficiency operation that reduces external component heating, resulting in higher reliability and longer CCFL life. The proprietary design technique provides a simple, low-cost system solution.

Pin Diagram

Functional Block Diagram

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Contents ViewSonic VG2427wm VG2427wmSM Rev a MarTdrmnddcwbvspc TdrmnddkwbvspcTdrmnddywbvspc TdrmnddbwbvspcTable of Contents Product Safety Notice Precautions and Safety NoticesSafety Precautions Service NotesHanding and Placing Methods Correct Methods Incorrect MethodsPage Specification Front Panel Function Control Description Do the following to adjust the display setting Following tips may help you optimize your displayMain Menu Controls Audio AdjustControl Explanation Page Page Circuit Description Main BoardPin Assignment Page Page Page Page Name Pin # Pin DescriptionsFunction Power Board Typical ApplicationBlock Diagram Pin Comp GND OUT VCCPin Diagram Functional Block Diagram IC801 TA9687GNPin Description Pin No Names Enter into Burn/in mode Adjustment ProcedureWhite balance, Luminance adjustment Enter into the factory modeISP Board Firmware Upgrade ProcedureEquipment needed Hardware Connect status Update the NOVATEK’S firmware PC LPTPage Page DDC Key in Procedure Install softwareFor analog Page Troubleshooting Flow Chart Block Diagram Mosfet ON/OFFDIM Schematic Diagrams 0R05 1/10W 5%FB402 TO252 0402 Power Board Power XFMR7 IC with Heat-sink90G6295-3 TPV Model Key BoardPCB Name USB Board UpstreamPCB Layout Diagrams Page Power Board Page Key Board USB Board Page Exploded Diagram and Exploded Parts List 10.1 EPLDescription Part Number Qty 10.2 PPL Recommended Spare Parts List Location Part Number Description RemarkCONN.6P 1.0 DIP Cbpc LabelWafer Wafer 30P 2.0MM DIP Dual ROWPage RST Chipr RST Chip MAXChip 22PF 50V NPO Chip Bead Chip 5PF 50V NPOBead 300Ω Chip Bead FCM2012VF-301T07 BullwillUDZSNP5.6B Rohm Dome Switch 5PCSPIN PWPC9D41MQWU Power Board TRA LMBT3904LT1G 200MA/40V SOT-23 LRCCAP CER 56PF J 3KV IC PC123Y22FZ0FRST Ntcr 8OHM £«£20£¥ 4A Xianzheng Choke by LI TADiode SP1060 ITO-220 Secos Screw HS1Heat Sink Screw HS21ST Chipr RST Chipr 3.6KRST Chipr 6.2KOHM +-5% 1/10W Yageo RST Chipr 1KX7R RST Chipr 820KOHM +-5% 1/4W FenghuaNPO Chip Bead HCB3216KF-800T30 Bullwill Power Board PCBJumper Wire BAV70 SOT23 by PAN JITHT POT Label ConnectorVSC 23.6 Hinge Assy Pallet LabelUSB Board PCB Diode ESD EGA 10603V05A1-B InpaqRST Chip MAX 0R05 1/4W Location Part Number Description Different Parts ListDiversity of Tdrmnddcwbvspc compared with Tdrmnddkwbvspc Diversity of Tdrmnddbwbvspc compared with TdrmnddkwbvspcReader’s Response Name Company Add Tel Mail Title Fax