ViewSonic VSXXXXX User Manual

ViewSonic VG2427wm Model No. VSXXXXX 23.6” Color TFT LCD Display (VG2427wm_SM Rev. 1a Mar. 2009) ViewSonic 38

10Main Menu Controls Adjust the menu items shown below by using the up and down buttons. Control Explanation Auto Image Adjust automatically

11 Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number

12Language Select allows the user to choose the language used in the menus and control screens.Resolution Notice advises the optimal resolution to

134. Circuit Description 4.1 Main Board U401 NT68667UFG/C The NT68667 is a highly integrated f

14Pin Assignment

15

16

17

18 U701 AP1117D33L and U704 AP1117E18LA: DC power convert, convert to 3.3v and 1.8v. AP1117 is a low dropout positive adjustable or fixed-mode re

19 Pin Descriptions Name I/O Pin # Function Adj (GND) I 1 A resistor divider from this pin to the Vout pin and ground sets the outpu

2Copyright Copyright © 2008 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcrib

204.2 Power Board IC901 LD7576 The LD7576X series bring high performance, combines with highly integrated functions, protections and EMI-improve s

21Block Diagram Pin Name Function 1 CT This pin is to program the frequency of the low frequency timer. By connecting a capacitor to gro

22IC801 TA9687GN TA 9687 is a high performance, cost-effective CCFL (Cold Cathode Fluorescent Lamp) controller designed for driving large-size Liqu

23Pin Description Pin No. I/O1 Names Description 1 I VSEN Voltage Sense Feedback 2 I/O SSTCMP Capacitor for Soft-Start and

245. Adjustment Procedure 5.1 White balance, Luminance adjustment Approximately 2 Hours should be

25e. Adjust sRGB (sRGB) color-temperature 1. Switch the Chroma-C7120 to RGB-mode (with press “MODE” button) 2. Switch the MEM.channel to Channel 4

26 Hardware Connect status 5.2.2 Update the NOVATEK’S firmware You should jump the pin to “For Flash” at ISP Board LPT Cable VGA Cable

27Double click “Writer.exe” This tool can auto detect the right SCALAR programe speed,the process as follow:

28 When auto detect is finished,click “Load Hex”,then chosse the firmware that you want to update Click “Auto”,then the update will begin.Wait fo

295.3 DDC Key in Procedure Note: 1. Every time after replacing the main board, you have to do the DDC key in. 2. If you find the DDC does not confo

3 TABLE OF CONTENTS 1. Precautions and Safety Notices ... 4

30For analog a. Double-click ，appear as follow Figs： b. Click . c. Key in the Serial Number printed on the barcode label, then click “OK

31 d. Unit appears the following Fig, writer completed. 12 codes, for example. R3V080100001

326. Troubleshooting Flow Chart

337. Block Diagram 7.1 Main Board Scalar IC NT68667

347.2 Power Board DIM EMI filter Start Circuit: R904, R905,R906 PWM Control IC LD7576 Transformer AC input 16V ON/OFF Control Feedback Circui

358. Schematic Diagrams

36+5V+5VQ3022N3904S-RTK/PSR302220 OHM 1/4WPPWR_ON#5VCC3.3VCC3.31 2FB301120 OHMR4453.9K OHM 1/16WLED_GRN/BLUE 5POWER_KEY# 5KEY2 5KEY1 5LED_LF_BLUE 5

37C703NC/0.1UF 16VOEM MOD ELSizeRevDateSheetofTPV MODELPCB NAME称爹T P V ( Top Victory Electronics Co . , Ltd. )Key Component絬 隔 瓜 絪 腹

38EE_WPT0M 3T0P 3T1M 3T1P 3T2P 3T2M 3T3M 3T3P 3TCLK1P 3TCLK1M 3T4M 3T6M 3T4P 3T7P 3T5P 3TCLK2M 3T6P 3T7M 3TCLK2P 3T5M 3C4031uF 16VC0603C4041uF 16VC

398.2 Power Board R903100K OMH 2W +-5%L904CoilVSCCHANGEJUMP WIREREV:B ADDCN903(USB 称ノ)R92710K 1/10W 1%+5V+16V+5VC9211000pF 250VQ903KTD1028C9120.001

41. Precautions and Safety Notices 1. Precautions and Safety Notices 1.1 Safety Precautions This monitor is

40C8100.0033uF62751 8PT801POWER X'FMRVSCS21G22S13G14D15D16D27D28Q806AO4620VSEN1SSTCMP2CT3RT14GNDA5PDR26GNDP7NDR28NDR19PDR110VDDA11TIMER12PWM13

41SHUTDOWN1BYPASS2RIN-3GND4GND5LIN-6VOLUME7SE/BTL8LOUT-9VDD10LOUT+11GND12GND13ROUT+14VDD15ROUT-16IC601APA2069JITULC6140.1uF/16VIC with Heat-sink(90

428.3 Key Board R001 3K 1/10W 1%3412LED001LEDC0020.1uF 16VUPKEY2POWERKEY1BLUEYELLOWGNDYELLOWBLUEC0010.1uF 16V1 3 52 4 6 87 910SW01SWUPDOWNDOWN12345

438.3 USB Board C7100.1uF/16VGND_UDM3GND_UDP3C7110.1uF/16VDM4C7120.1uF/16VDP4C70610nF16VGND_UC7070.1uF/16VGND_UDM4DP3R732 NC/0R05 1/16W1 2ZD707NC/E

449. PCB Layout Diagrams

45

469.2 Power Board

47

48 9.3 Key Board 9.3 USB Board

49

51.4 Handing and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal frame of the LCD panel or the front cover of the

5010. Exploded Diagram and Exploded Parts List 10.1 EPL

51 Item Description Part Number Q'ty 1 BEZEL A34G0935 KRB1B0130 1 2 LENS A33G0529 1 1L0100 1 3 KEY PCB KEPC8AA9 1 4 KEY PAD A33G

5210.2 PPL Item Description Part Number Q'ty 1 Signal cable 089G 728CAA DB 1 2 Audio cable 089G 17356X553 1 3 DVI cable 089G1748

5311. Recommended Spare Parts List TDRMNDDKWBVSPC Location Part Number Description Remark 019G6014 1 T

54 A34G0936 KR 3B0100 REAR COVER 23.6" A85G0133101 SHIELD-AC AM1G1740 12225 CR3 SCREW 040G 45762412B CBPC LABEL CN701 033G380

55R105 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R109 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R111 061G0402101 RST CHIPR 100 OHM +-5% 1/1

56R401 061G0402470 0F RST CHIPR 0402 470 OHM +-1% 1/16W R110 061G0402471 RST CHIPR 470 OHM +-5% 1/16W R303 061G0402472 RST CHIPR 4.7 KOHM

57C302 065G0402224 17 CAP CER 0.22UF -20%-80% C401 065G0402224 17 CAP CER 0.22UF -20%-80% C102 065G0402473 12 CHIP 0.047UF 16V X7R C106

58ZD401 093G 39S 34 T UDZSNP5.6B ROHM ZD402 093G 39S 34 T UDZSNP5.6B ROHM ZD403 093G 39S 34 T UDZSNP5.6B ROHM D102 093G 64

59CN801 033G8021 2E F WAFER IC903 056G 139 3A IC PC123Y22FZ0F IC601 056G 616 34 IC APA2069JITUL 2.6W*2 PDIP-16 NR901 061G 58809MEN

6Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That could scratch the surface of the panel or cause “Mura

60 0M1G 930 8120 SCREW HS1 Q90G6263 6 HEAT SINK 705GQ893039 D908 ASS'Y D908 093G 60278 DIODE SP1060 ITO-220 SECOS 0M1G

61R840 061G0603105 RST CHIPR 1M OHM +-5% 1/10W R841 061G0603105 RST CHIPR 1M OHM +-5% 1/10W R930 061G0603243 1F RST CHIPR 2.43K OHM

62R935 061G1206101 RST CHIPR 100 OHM +-5% 1/4W R920 061G1206101 RST CHIPR 100 OHM +-5% 1/4W R919 061G1206101 RST CHIPR 100 OHM +-5% 1/

63C929 065G1206102 72 CAP CHIP 1206 1000PF K 500V X7R C912 065G1206102 72 CAP CHIP 1206 1000PF K 500V X7R FB902 071G 57G800 B CHIP BEA

64 Q37G0139013 VSC 23.6 HINGE ASS'Y Q40G 58170931A HT POT LABEL Q40G0001624 4A PALLET LABEL Q40G000270927A EPA LABEL Q44

65R718 061G0402104 RST CHIPR 100 KOHM +-5% 1/16W R719 061G0402104 RST CHIPR 100 KOHM +-5% 1/16W R720 061G0402104 RST CHIPR 100 KOHM +-5%

66E08904 089G 17356X553 AUDIO CABLE Q41G2401709 3A VA2413WM SERVICE INSERT Q41G2401709 7A VG2427WM QSG FOR LI Q45G2007M0102A PE

67* Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our prod

72. Specification

83. Front Panel Function Control Description Use the buttons on the front control panel to display and adjust

9Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD menus and adjustment screens disappe