Service Manual ViewSonic VG810s/b-1 Model No. VLCDS27944-1W/-2W 18” Color TFT LCD Display (VG810s/b_SM_720 Rev. 1a Mar.
Copyright Copyright ¤ 2003 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 2 3. Front Panel Function Control Description 13 4. Circuit Description 19 5. Adjusting Procedure 20 6. Trouble Shooting Flow Chart 23 7. Recommended Spare Parts List 29 8. Exploded Diagram And Spare Parts List 45 9. Block Diagram 49 10. Schematic Diagrams 50 11.
1. Precautions and Safety Notices Prior to using this manual, please ensure that you have carefully followed all the procedures outlined in the user manual for this product. • Read all of these instructions. • Save these instructions for later use. • Follow all warnings and instructions marked on the product. • Do not use this product near water. • This display should be installed on a solid horizontal base. • When cleaning, use only a neutral detergent cleaner with a soft damp cloth.
2. Specification 2.1 General Description LCD LG LM181E06-A4M5 Input Signals Input connector Synchronization Resolution Active Display Area Power Supply Voltage Rating AC Power Consumption Current Rating Dimensions Weight (net) Environmental Conditions Accessories Active matrix thin-film-transistor (TFT) Type No: LM181E06-A4M5 Active screen Size 18.1 inches diagonal Effective Display Size 359.04mm (H) × 287.232mm ( V ) Pixel Pitch 0.280mm (H) × 0.
2.2 Electrical Characteristics 2.2.1 Power Supply AC Input Voltage AC 100~240 V / 47.5~63Hz Power Consumption: Less than 60W On mode Less than 1W Active Off mode Less than 1W DC power Off Current Rating 2A @ AC 100~240V Inrush Current Less than 50 Amp(peak) for 120 Vac Less than 100 Amp(peak) for 230 Vac Power cord： detachable, 3P, 1.8m 2.2.
2.2.5 Power Management VG810 will enter power saving mode under the following conditions: Power Management condition and status Horizontal Vertical Video Pulses Pulses Active <60W Green Pulses No Pulse No Pulse Pulses Blank <1W Amber No Pulse No Pulse Out off scan range <30KHz , >82KHz <50Hz , >85Hz - <60W Green AC power Off - - - Off Off DC power Off - - - <1W Off On Active off 2.3 Signals Power Supply State LED Video alignment 2.3.
2.3.4 Luminance test 2.3.4.1 Set color temperature to 9300°K Apply VESA 1280x1024/60Hz , apply full white pattern, adjust OSD Brightness = 100%, Contrast = 70%. 1. The luminance measure should be over 150 cd/m 2 2.3.4.2 Set color temperature to 6500°K Apply VESA 1280x1024 / 60Hz, apply full white pattern, adjust OSD Brightness = 100%, Contrast = 70% 1. The brightness measure should be over 190 cd/m 2 2. OSD Brightness = 100%, Contrast = 100%, The brightness measure should be over 200cd/m 2 . 2.3.4.
2.4.
2.5 EDID Serial No. format 2.5.1 EDID for VG810s 2.5.1.1 Analog EDID 128 BYTES OF EDID CODE： 0 10 20 30 40 50 60 70 80 90 100 110 120 2.5.1.
2.5.2 EDID for VG810b 2.5.2.1 Analog EDID 128 BYTES OF EDID CODE： 0 10 20 30 40 50 60 70 80 90 100 110 120 2.5.2.
Appendix A： Preset timing chart Analog mode 1 2 3 TEXT mode TEXT mode VGA H-frequency (kHz) 31.468 31.469 31.468 35.001 37.5 37.862 43.269 V-frequency (Hz) 70.087 70.087 59.941 66.667 75 72.807 85.005 Pixel rate (MHz) 25.175 28.322 25.175 30.240 31.5 31.501 36.
15 16 17 18 19 20 XGA XGA XGA XGA SXGA 720P H-frequency (kHz) 56.476 58.099 60.023 68.677 63.981 45.000 V-frequency (Hz) 70.069 72.082 75.029 84.997 60.02 60.00 Pixel rate (MHz) 75.000 78.084 78.750 94.500 108 74.
Digital Mode 1 2 3 4 TEXT mode TEXT mode VGA VGA H-frequency (kHz) 31.468 31.469 31.468 31.468 37.5 37.862 43.269 V-frequency (Hz) 70.087 70.087 70.087 59.941 75 72.807 85.005 Pixel rate (MHz) 25.175 28.322 25.175 25.175 31.5 31.501 36.
16 17 18 19 XGA XGA XGA SXGA HD-720P H-frequency (kHz) 58.099 60.023 68.677 63.981 45.000 V-frequency (Hz) 72.082 75.029 84.997 60.02 60.00 Pixel rate (MHz) 78.084 78.750 94.500 108 74.
3. Front Panel Function Control Description Adjusting the Screen Image: Use the buttons on the front control panel to display and adjust the OnView® controls which display on the screen. The OnView controls are explained at the top of the next page and are defined in “Main Menu Controls” on page 9. Main Menu with OnView controls Front Control Panel shown below Speaker Speaker Scrolls through menu options and adjusts the displayed control.
Do the following to adjust the screen image: 1 To display the Main Menu, press button [1]. NOTE: All OnView menus and adjustment screens disappear automatically after about 30 seconds. 2 To select a control you want to adjust, press ▲ or ▼ to scroll up or down the Main Menu. 3 After the control is selected, press button [2]. A control screen like the one shown below appears. The line at the bottom of the screen tells you what you can do next: Exit or select the Brightness control.
Main Menu Controls Adjust the menu items shown below by using the up ▲ and down ▼ buttons. Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion. Press the [2] button to obtain a sharper image. NOTE: Auto Image Adjust works with most common video cards. If this function does not work on your LCD display, then lower the video refresh rate to 60 Hz and set the resolution to its pre-set value.
Control Explanation Color Adjust provides several color adjustment modes: preset color temperatures and RGB which allows you to adjust red (R), green (G), and blue (B) separately. The factory setting for this product is 6500K (6500 Kelvin). sRGB — sRGB is quickly becoming the industry standard for color management, with support being included in many of the latest applications. Enabling this setting allows the LCD display to more accurately display colors the way they were originally intended.
Control Explanation Information displays the timing mode (video signal input) coming from the graphics card in your computer. See your graphic card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency). NOTE: VESA 1280 x 1024 @ 60 Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz. Manual Image Adjust displays the Manual Image Adjust menu.
Control Explanation Setup Menu displays the menu shown below. The Setup Menu controls are explained below: Language allows you to choose the language used in the menus and control screens. Resolution Notice displays the Resolution Notice menu shown below. Resolution Notice advises the optimal resolution to use. OSD Position allows you to move the on-screen display menus and control screens. OSD Timeout sets the length of time an on-screen display screen is displayed.
4. Circuit Description 4.1 Power supply (DC/DC Converter): 4.1.1 IC251 MP1410 is a switching regulator controller that uses PWM method. That can be used for DC to DC conversion for step-down. It converts a 12V DC into regulated and stable output voltage of 5V. 4.1.2 Regulator: IC253(AIC1084-33) function is to convert a 5V into regulated and stable O/P 3.3V. D252, D253 are 3.3V convert 2.5V. 4.2 DDC data select: 4.2.1 IC601(AT24C02) saves D-SUB DDC data. 4.2.2 IC602(AT24C02) saves DVI, DDC data. 4.
5. Adjusting Procedure 5.1 General. 1. All specification must be met over line voltage range of 90VAC to 264VAC 50Hz / 60Hz, unless otherwise specified. 2. Operating temperature range is 0oC to 40oC with a relative humidity of 10% or less to 80%. 3. The monitor must be operational in a usable state within 30 minutes after turn-on. 4. All signal levels are measured assuming termination at the monitor’s input jacks or in its characteristic impedance. 5.
5.2 Instrument alignment. 5.2.1 Adjustment procedure.
5.2.2 Video alignment. 5.2.1.1 Preset condition. 5.2.1.1.1 Setting the contrast to 70%, brightness to 100%. 5.2.1.1.2 Input 1280x1024 / 60Hz, 16 gray pattern (input level 100IRE 0.7Vp-p), then press “RGB RESET”.
6. Trouble Shooting Flow Chart 6.1 No power. Check that CN251 pin1, 2 are approximately 12V Yes No Failure point Check that FB251, FB252, F251 are 12V 1. Power board failure. 2. Disconnected between CN251 and power board. No Failure point FB251, FB251, F251 failure Yes Check that C255 positive is at 5V. No Failure point P251, IC251, L251 failure Yes Check: 1. C262 is O/P 2.5V. 2. IC253 is O/P 3.3V.
6.2 No display on screen (Screen is black, LED is off). AC power on and DC power on no picture LED is off Yes Yes Check that C255 positive is at 5V Check that the voltage level of CN251 is approximately 12V No Yes No Check CN302 pin8 is 12V, pin3 is 5V Yes Inverter failure Power board failure IC251 failure No 1. Check Q309, Q310 pin. 2.
6.3 No display on screen (LED is green). Is the backlight lit? Yes No Check that the cable is fully connected between the inverter and interface board. Check that the cable is fully connected to CN401 Failure point No The cable is disconnected No Yes Failure point Check: 1. C262 is O/P 2.V. 2. IC253 is O/P 3.3V. The cable is disconnected Yes No Failure point Yes 1. D252, D253 failure. 2. IC253 failure. Check CN302 pin8 is 12V, pin3 is 5V Check C255 is O/P 5V.
6.4 Show “No signal” on screen. Check that signal level of R612, R613, R614, R641, R642, R643, R644, R645, R646, R647, R648 Yes No Failure point No Check the Hsync and Vsync 6.5 1. IC401 failure. 2. Signal cable is disconnected. Keypad cannot work. Check the the cable is fully conneted between the interface board and key board Yes No Failure point Failure point 1. D305, D306 ~ D311, D312 failure. 2. TACT switch failure. The cable is disconnected.
6.
Confidential - Do Not Copy ViewSonic Corporation 28 VG810s/b
7. Recommended Spare Parts List VG810b Recommended Spare Parts List Item 1 2 3 4 ViewSonic P/N A-PC-0106-0193 A-AU-0120-0033 A-VC-0101-0359 A-PC-0106-0150 Ref. P/N 3070000501 3080005100 3080426400 3090107600 Description AC POWER CORD L1800 BLACK EURO CABLE AUDIO L=1800 BLK PC99 CABLE D-SUB/D-SUB L1800 BLK 20276 AC POWER CORD L=1800 BLACK UL/CSA Location 5 M-SCW-0824-0410 3100300600 SCREW M M3*0.
VG810b Recommended Spare Parts List Item 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 ViewSonic P/N M-BK-0805-0042 M-MS-0808-9130 M-MS-0808-9131 M-BK-0805-0043 M-BK-0805-0044 M-MS-0808-8643 P-FM-0602-0836 P-FM-0602-0837 M-MS-0808-9132 M-MS-0808-8762 M-MS-0808-9133 M-MS-0808-9134 P-BX-0601-0923 M-MS-0808-8396 A-CD-VG810B M-MS-0808-9135 M-WR-0828-6619 M-WR-0828-6620 M-WR-0828-6621 E-SK-0412-0086 M-WR-0828-0402 M-MS-0808-9136 M-LCD-0826-0161 B-IF-0222-0052 B-KB-0207-0045 B-
VG810s Recommended Spare Parts List Item 1 2 3 4 ViewSonic P/N A-PC-0106-0193 A-AU-0120-0033 A-VC-0101-0359 A-PC-0106-0150 Ref. P/N 3070000501 3080005100 3080426400 3090107600 Description AC POWER CORD L1800 BLACK EURO CABLE AUDIO L=1800 BLK PC99 CABLE D-SUB/D-SUB L1800 BLK 20276 AC POWER CORD L=1800 BLACK UL/CSA 5 M-SCW-0824-0410 3100300600 SCREW M M3*0.
VG810s Recommended Spare Parts List Item 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 ViewSonic P/N P-FM-0602-0836 P-FM-0602-0837 M-MS-0808-9132 M-MS-0808-8762 M-MS-0808-9133 M-MS-0808-9134 P-BX-0601-0924 M-MS-0808-8396 A-CD-VG810S M-MS-0808-9135 M-WR-0828-6619 M-WR-0828-6620 M-WR-0828-6621 E-SK-0412-0086 M-WR-0828-0402 M-MS-0808-9138 M-LCD-0826-0161 B-IF-0222-0052 B-KB-0207-0045 B-PS-0204-0058 B-SB-0221-0589 Ref.
VG810b BOM LIST Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 ViewSonic P/N A-PC-0106-0193 A-AU-0120-0033 A-VC-0101-0359 A-PC-0106-0150 M-SCW-0824-0410 M-SCW-0824-0410 M-SCW-0824-0410 M-SCW-0824-0410 M-SCW-0824-0734 M-SCW-0824-0690 M-SCW-0824-0690 M-SCW-0814-0691 M-SCW-0824-6793 M-SCW-0824-0776 M-SCW-0824-0007 M-SCW-0824-0413 M-SCW-0824-0413 M-SCW-0824-0413
VG810b BOM LIST Item 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 ViewSonic P/N M-BK-0805-0043 M-BK-0805-0044 M-MS-0808-8162 M-BK-0805-0061 M-MS-0808-8561 M-MS-0808-8563 M-BK-0805-0038 M-BK-0805-0039 M-BK-0805-0040 M-BK-0805-0041 M-BK-0805-0042 M-MS-0808-8643 P-FM-0602-0836 P-FM-0602-0837 M-MS-0808-9132 M-MS-0808-8762 #N/A M-LCD-0826-0127 M-MS-0808-9133 M-MS-0808-9134 P-BX-0601-0923 #N/A Ref.
VG810b BOM LIST Item ViewSonic P/N 134 #N/A 135 #N/A 136 #N/A 137 #N/A 138 #N/A 139 E-R-0405-7034 140 E-R-0405-7037 141 #N/A 142 #N/A 143 #N/A 144 #N/A 145 #N/A 146 E-R-0405-7038 147 #N/A 148 #N/A Ref. P/N 313331000 313471000 313514000 341053300 341062300 341077300 341079300 341109100 341113300 341185100 341271300 341346300 341421300 341427300 341448300 Description RES CH 1/4W 330 J 1206 RES CH 1/4W 470 J 1206 RES CH 1/4W 510K J 1206 RES CH 1/10W 5.
VG810b BOM LIST Item ViewSonic P/N 186 E-C-0404-4861 Ref. P/N 140152211467 Description CAP AL LD 35V 220U M 10*12.5 TP5 187 E-C-0404-4805 142122211200 CAP AL 16V 220U M 8*11.5 TP5 188 E-C-0404-4806 142124711200 CAP AL 16V 470U M 10*12.5 TP5 142141001200 CAP AL 25V 10U M 5*11 TP5 190 189 E-C-0404-3839 #N/A 142141011200 CAP AL 25V 100U M 6.
VG810b BOM LIST Item ViewSonic P/N 236 #N/A 237 #N/A 238 E-D-0403-1937 Ref. P/N 203812580236 203812760036 204322000207 Description DIO ZEN 0.5W 8.57-9.01V LLDS(MINIMELF) DIO ZEN 0.5W 24.97-26.26V LLDS(MINIMELF) DIO SW 0.25A 200V SOD-27(DO-35) 239 E-D-0403-2049 204520700207 DIO SW 0.215A 75V SOT-23 SE. 240 241 242 E-D-0403-2050 #N/A E-D-0403-2135 204520700217 204520700305 204520700307 DIO SW 0.2A 70V SOT-23 SE. DIO SW 0.2A 70V SOT-23 C.C. DIO SW 0.
VG810b BOM LIST Item ViewSonic P/N Ref. P/N Description 290 #N/A 2921093612 BEAD CH 100MHZ 120 OHM 0.2A 0603 291 #N/A 2921113212 BEAD CH 100MHZ 120 OHM 4A 1206 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A 3411000500 3070075166 3070075166 3070075166 3070075166 3070075166 3070075166 3070337534 3076790083 3076790083 3076790083 3076790083 3076790083 3076790083 3343715900 JUMP WIRE COPPER 0.6*12.5*4.
VG810s BOM LIST Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 ViewSonic P/N A-PC-0106-0193 A-AU-0120-0033 A-VC-0101-0359 A-PC-0106-0150 M-SCW-0824-0410 M-SCW-0824-0410 M-SCW-0824-0410 M-SCW-0824-0410 M-SCW-0824-0734 M-SCW-0824-0690 M-SCW-0824-0690 M-SCW-0814-0691 M-SCW-0824-6793 M-SCW-0824-0776 M-SCW-0824-0007 M-SCW-0824-0413 M-SCW-0824-0413 M-SCW-0824-0413 M-SCW-0814-0
VG810s BOM LIST Item 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 ViewSonic P/N PL-PD-0714-0068 M-MS-0808-9137 M-CV-0830-2381 M-CV-0830-2509 M-CV-0830-2394 M-MS-0808-8612 M-MS-0808-8613 M-MS-0808-9130 M-MS-0808-9131 M-BK-0805-0043 M-BK-0805-0044 M-MS-0808-8162 M-BK-0805-0061 M-MS-0808-8561 M-MS-0808-8563 M-BK-0805-0038 M-BK-0805-0039
VG810s BOM LIST Item 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 ViewSonic P/N B-SB-0221-0589 #N/A E-R-0405-5763 #N/A #N/A E-R-0405-6645 #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A E-R-0405-7034 E-R-0405-7037 #N/A #N/A #N/A #N/A #N/A E-R-0405-7038 #N/A #N/A Ref.
VG810s BOM LIST Item 182 183 184 185 186 187 188 189 190 191 192 193 Ref. P/N 910500316 923610045 1101030027 1101030032 1101346000 1160410332 140121021303 140121021348 140152211448 140152211467 142122211200 142124711200 Description NTC R=5 OHM L 4A VARISTOR 360V 47J 2500A CAP Y CD 250VAC 100P K B I CAP Y CD 250VAC 100P K B I CAP Y CD 250VAC 2.2KP M E II CAP CD 3KV 15P J SL KI7.5 CAP AL LD 16V 1KU M 12.5*15 CAP AL LD 16V 1KU M 12.5*16 CAP AL LD 35V 220U M 10*12.5 TP5 CAP AL LD 35V 220U M 10*12.
VG810s BOM LIST Item ViewSonic P/N 237 #N/A 238 E-D-0403-2054 239 #N/A 240 #N/A 241 #N/A 242 #N/A 243 E-D-0403-1937 Ref. P/N 203812550631 203812550636 203812580223 203812580231 203812580236 203812760036 204322000207 Description DIO ZEN 0.5W 6.66-7.01V MINIMELF DIO ZEN 0.5W 6.66-7.01V LLDS(MINIMELF) DIO ZEN 0.5W 8.57-9.01V MINIMELF DIO ZEN 0.5W 8.57-9.01V MINIMELF DIO ZEN 0.5W 8.57-9.01V LLDS(MINIMELF) DIO ZEN 0.5W 24.97-26.26V LLDS(MINIMELF) DIO SW 0.
VG810s BOM LIST Item ViewSonic P/N Ref. P/N Description 295 #N/A 2921093612 BEAD CH 100MHZ 120 OHM 0.2A 0603 296 #N/A 2921113212 BEAD CH 100MHZ 120 OHM 4A 1206 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A 3411000500 3070075166 3070075166 3070075166 3070075166 3070075166 3070075166 3070337534 3076790083 3076790083 3076790083 3076790083 3076790083 3076790083 3343715900 JUMP WIRE COPPER 0.6*12.5*4.
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Confidential - Do Not Copy ViewSonic Corporation 46 VG810s/b
Confidential - Do Not Copy ViewSonic Corporation 47 VG810s/b
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Confidential - Do Not Copy L 0A 0T 4' XX s n i P 8 x P / I R E T R E V N I V 2 1L +O R T N O C _ T H G I L K C A B D R A O B 49 L E N A P s n 1 0S i 4 DN P N VO 0 C LC 3 l a t i g i D A D S D I V D N E T H G I L K C A B M 2 O 0AR 3TP CAE IDE 11 AL DC SS X T / L C S _ C D D L C S A G V M 25 O 01CR 6-DP CDDE IH E A D S A G V X R / A D S _ C D D 1 0 3U CC IM L 1A 0T 3' XX SS VH L C S D I V D M 1D O 0-C R 6ID P CVD E ID E D YR EA KO B L K P S R K P S 3o 0i P 8d M Cu A IA 3 .
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*Readers Response* Dear Readers: Thank you in advance for your feedback on our Service Manual,which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A.What do you think about the content after reading VG810s/b Service Manual? U nit Ex cellent Fair G ood Bad 1. Precautions And Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5.
