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ViewSonic VSXXXXX service manual

Models: VSXXXXX

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ViewSonic VSXXXXX service manual

Contents

VG2427wmSM Rev. 1a Mar Model No. VSXXXXX 23.6” Color TFT LCD DisplayService Manual ViewSonic VG2427wmTrademarks Revision HistoryCopyright DisclaimerTABLE OF CONTENTS 1. Precautions and Safety Notices 1. Precautions and Safety NoticesIncorrect Methods 1.4 Handing and Placing MethodsCorrect Methods The panel is placed facedown on the lap. That may cause “Mura.” Place the monitor on a clean and soft foam padPlace the monitor on the lap, the panel surface must be upwards 2. Specification 3. Front Panel Function Control Description The following tips may help you optimize your display Do the following to adjust the display settingControl Explanation Audio AdjustMain Menu Controls Manual Image Adjust displays the Manual Image Adjust menu Page 4.1 Main Board 4. Circuit DescriptionPin Assignment Page Page Page Page Function Pin DescriptionsName Pin #Typical Application 4.2 Power BoardIC901 LD7576 Function Block Diagram1 CT 2 COMP 3 CS 4 GND 5 OUT 6 VCC 7 NC 8 HV IC801 TA9687GN Pin DiagramFunctional Block Diagram Names Pin DescriptionPin No I/O1Enter into the factory mode 5. Adjustment Procedure5.1 White balance, Luminance adjustment Enter into Burn/in mode5.2.1 Equipment needed 5.2 Firmware Upgrade ProcedureISP Board Max Brightness measurement 250 cd/m2 Test conditionsYou should jump the pin to “For Flash” at ISP Board Connect to the Hardware Connect status 5.2.2 Update the NOVATEK’S firmwareLPT Cable VGA CableDouble click “Writer.exe” Page Connect to the PC LPT 5.3 DDC Key in Procedure5.3.2 Install software 5.3.3 Connect the DDC board as followa. Double-click ，appear as follow Figs： b. Click For analogd. Unit appears the following Fig, writer completed R3V080100001 12 codes, for example6. Troubleshooting Flow Chart 7.1 Main Board 7. Block Diagram7.2 Power Board 20081225 8. Schematic Diagrams8.1 Main Board FB402 ADD R711 Volume#TO252 SOT22320K OHM 1/16W 0402NT68667UFG/C ADD R446,4472008-08-20 8.2 Power BoardJUMP WIRE bom change100K 1/10W 5% POWER XFMR7100K 1/10W 1% R8132 Rin VOLUMEIC with Heat-sink90G6295-3 4 LinKEY2 DOWN KEY1 POWERPOWER 3 POWER 4 BLUE 5 YELLOWDow nstream Hub side12V to Upstream9.1 Main Board 9. PCB Layout DiagramsPage 9.2 Power Board Page 9.3 Key Board 9.3 USB Board Page 10.1 EPL 10. Exploded Diagram and Exploded Parts ListBEZEL DescriptionPart Number Part Number 10.2 PPLDescription Part Number 11. Recommended Spare Parts ListTDRMNDDKWBVSPC LocationSHIELD-AC A34G0936 KR 3B0100REAR COVER A85G0133101R109 R105061G0402101 RST CHIPR 100 OHM +-5% 1/16WR110 R401061G0402470 0F RST CHIPR 0402 470 OHM +-1% 1/16WC401 C302065G0402224 CAP CER 0.22UF -20%-80%093G DOME SWITCH 5PCSPOWER BOARD ZD401IC903 CN801033G8021 2E WAFERQ90G6263 0M1G8120 SCREWR841 R840061G0603105 RST CHIPR 1M OHM +-5% 1/10WOHM +-5% 1/4W R935061G1206101 RST CHIPR065G1206102 POWER BOARD PCBJUMPER WIRE C929Q40G 58170931A CONNECTORQ37G0139013 VSC 23.6 HINGE ASSYR719 R718061G0402104 RST CHIPR 100 KOHM +-5% 1/16WPart Number 12. Different Parts ListDiversity of TDRMNDDYWBVSPC compared with TDRMNDDKWBVSPC LocationReader’s Response AssessmentReader’s basic dada