Service Manual ViewSonic Q9b-3 Model No. VS11455 19” Color TFT LCD Display (Q9b-3_SM Rev. 1a Sep.
Copyright Copyright © 2006 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 4 3. Front Panel Function Control Description 7 4. Circuit Description 12 5. Adjustment Procedure 17 6. Troubleshooting Flow Chart 38 7. Recommended Spare Parts List 43 8. Exploded Diagram and Exploded Parts List 51 9. Block Diagram 55 10. Schematic Diagrams 56 11.
1. Precautions and Safety Notices 1. Appropriate Operation (1) (2) (3) (4) (5) (6) (7) (8) (9) Turn off the product before cleaning. Use only a dry soft cloth when cleaning the LCD panel surface. Use a soft cloth soaked with mild detergent to clean the display housing. Disconnect the power plug from AC outlet if the product is not used for a long period of time. If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off.
The LCD module should be supplied by power complied with requirements of Limited Power Source (IEC60950 or UL1950), or be applied exemption. (14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit (IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit. 5.2. Handling and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal frame of the LCD panel Surface of the LCD panel is pressed by fingers or the front cover of the monitor.
Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects.
2. Specification 1. General Requirements General Specifications Test Resolution & Frequency Test Image Size Contrast and Brightness Controls “1280 x 1024” @ 60Hz Full Size Factory Default: Contrast =100%, Brightness = 100% 2. Signal Interface Video Interface Analog Input Connector Default Input Connector Video Cable Connector DB-15 Pin out Video Signals Video Impedance Exclusions DB-15 (Analog) Defaults to the first detected input Compliant DDC 1/2B. 1.
5. LCD Panel Panel Characteristics 1st Souce: Panel Type Type Active Size Pixel Arrangement Pixel Pitch # of Backlights Backlight Life Panel Performance Luminance – Condition: CT = 6500K, Contrast = Max, Brightness = Max Brightness Uniformity Contrast Ratio Color Depth Viewing Angle (Horizontal) Viewing Angle (Vertical) Response Time 10%-90% @ Ta=25°C HSD190ME13-A02 TN type with LVDS interface 376.32 (H) x 301.06 (V) RGB Vertical Stripe 0.
Package Specifications Width Height Depth Gross Weight 465 mm 445 mm 150 mm 5.55kg (12.21 lbs) 7.
3. Front Panel Function Control Description Main Menu with OSD controls Front Control Panel shown below in detail Scrolls through menu options and adjusts the displayed control. Also a shortcut to display the Contrast adjustment control screen. Displays the Main Menu or exits the control screen and saves adjustments. Displays the control screen for the highlighted control. Also toggles between two controls on some screens. Also a shortcut to Auto Image Adjust.
Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD menus and adjustment screens disappear automatically after about 30 seconds. This is adjustable through the OSD timeout setting in the setup menu. 2. To select a control to adjust, pressSorTto scroll up or down in the Main Menu. 3. After the desired control is selected, press button [2]. A control screen like the one shown below appears.
Main Menu Controls Adjust the menu items shown below by using the upSand downTbuttons. 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 Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic® website URL. See your graphics card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency). NOTE: VESA 1280 x 1024 @ 60Hz (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 Language Select allows the user to choose the language used in the menus and control screens. Resolution Notice advises the optimal resolution to use. OSD Position allows the user to move the OSD menus and control screens. OSD Timeout sets the length of time the OSD screen is displayed. For example, with a “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears.
4. Circuit Description A. DC-DC CONVERTER This brick convert is the 110-220AC input voltage to 12V AND 5V output for invert use and panel use and system controller use . 5V Out put at L804 VCC 12V In put at L803,F901 B. Scaling controller The ADC is to convert RGB analog signal to digital signal that scaling chip can acknowledge. The HSYNC input receives a logic signal and provides the frequency reference for pixel clock generation.
Serial Flash Interface Pin Name Pin Type SDO Input w/ 5V-Tolerant CSZ Output SCK Output SDI Output Function Pin SPI Flash Data Output Serial SPI Flash Chip Select SPI Flash Serial Clock SPI Flash Data Input Serial 70 71 72 73 LVDS Interface Pin Name Pin Type LVA0M Output LVA0P Output LVA1M Output LVA1P Output LVA2M Output LVA2P Output LVA3M Output LVA3P Output LVACKM Output Pin Name Pin Type LVACKP Output LVB0M Output LVB0P Output LVB1M Output LVB1P Output LVB2M
GPIO Interface Pin Name Pin Type Function GPIO_P12 I/O w/ 5V-tolerant General Purpose Input/Output; programmable driving strength PWM1/ GPIO_P25 I/O w/ 5V-tolerant Pulse Width Modulation Output; 4mA driving strength/ General Purpose Input/Output; 4mA driving strength 21 GPIO_P00/ SAR1 I/O w/ 5V-tolerant General Purpose Input/Output; 4mA driving strength/ SAR ADC Input 23 GPIO_P01/ SAR2 I/O w/ 5V-tolerant General Purpose Input/Output; 4mA driving strength/ SAR ADC Input 24 GPIO_P02/ SAR3 I
Misc.
MOSFET pair to boost AC output up to hundreds of voltage. And one resister is serial to lamp for output voltage feedback. There are two signal to control the inverter which come from system. Logic “high” level which send to I901 is turn on the inverter. BRI signal control brightness by DC level which was integral from PWM signal.
5. Adjustment Procedure 1. Function Test 1.1. Product - 19” LCD Monitor 1.2. Test Equipment - Color Video Signal & Pattern (or PC with SXGA resolution and a sound card) 1.3. Test Condition Before function test and alignment, each LCD Monitor should be run-in and warmed up for at least 30 minutes with the following conditions: (a) In room temperature, (b) With full-white screen, RGB, and Black (c) With cycled display modes, 640*480 (H=43.27kHz, V=85Hz) 800*600 (H=53.7kHz, V=85Hz) 1024*768 (H=68.
7 White Balance White & Black Pattern The screen must have the pure Figure 9 white and black pattern, no other color. Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2) Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4) G. Color Pattern (Figure5) B.
Black-White Pattern (Figure 9) 1.5. Function Test and Alignment Procedure 1.5.1 All Modes Reset You should do “Memory Recall” (Refer to Chapter III-3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults. 1.5.2 Auto Image Adjust Please select and enter “Auto Adjust” function on Main Menu to see if it is workable. The “Auto Adjust” function is aimed to offer a better screen quality by built-in ASIC.
(b) Then, select and enter “H. Size” or “H./V. Position” function to adjust the video boundary to be full scanned and within screen frame. 1.5.7 White Balance A. TIMING: 1280x1024 64KHz/60Hz. B. PATTERN: 5 Blocks. C. LCD MONITOR set to 1280x1024 80K/75Hz BURN IN and warm up over 30 minutes. D. CA110 color analizer at the center of screen and along a perpendicular to the screen at 20cm from the display. E.
(5) 6500K verify: Repeat (4) press “▼”, “▲” move cursor to 6500K press “ 2 ” key x=0.313 ± 0.02 y=0.329 ± 0.02 (6) 5400K verify: Repeat (4) press “▼”, “▲” move cursor to 5400K press “ 2 ” key x=0.332 ± 0.02 y=0.348 ± 0.02 (7) Press “ 1 ” key go back to Fig.2, Then press “ 1 ” key return to Fig.1, Power key OFF/ON quit factory mode. G. Color Temperature Verify: BRIGHTNESS MAX, CONTRAST MAX 9300K: x=0.283 ± 0.02 y=0.298 ± 0.02 6500K: x=0.313 ± 0.02 y=0.329 ± 0.02 5400K: x=0.332 ± 0.02 y=0.348 ± 0.02 H.
1.5.14 All Modes Reset After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again. 1.5.15 Power Off Monitor Turn off the monitor by pressing “Power” button. 2. Firmware Upgrade Procedure When you receive the returned monitor, please check whether the firmware version is the latest. If not, please do the following procedures to upgrade it to the latest version. 2.1.
2.2. Setup Procedure 2.2.1 Connect P2 of Fixture with printer port of PC by LPT Cable. 2.2.2 Connect P1 of Fixture with Q9/B-3 Monitor by VGA Cable. 2.2.4 Connect Power Cord to Q9/b-3 Monitor. 2.2.5 Connect PC to the additional monitor. 2.3. ISP Download program procedure 2.3.1 Hardware Connect status: 2.3.2 Down load isp program Step 1: Execute ISP.exe Step 2: Select device type button to select the type of the device, It need to be selected Pressing the the Pm25LV512 for this project.
Step 3: Connect device Then press the button to connect device. connection successful : press the button to continue; Step 4: Read file to enter the read-file page.
to select file (*.bin). (2)Press the button Step 5: Run Button to enter the auto-download page. Press Pressing the button to download the firmware.
Step 6: Download program finish Pressing the Button to finish the download program procedure. Trouble shooting: If you find the status like the follow picture. Please check the following item. a. The connecting status between PC and ISP board. b. The connecting status between ISP status and Monitor. Turn off the power of monitor (AC plug off ) and disconnect the D-Sub connector . To connect the D-Sub connector and then turn on the power of monitor.
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 conform to the monitor, you have to do the DDC key in. 3.1. Equipment Needed - JT198NP4FD3 Monitor DDC Card PC RS232 cable Barcode Reader VGA Cable Q9b-3 RS-232 Cable DDC Card PC VGA Cable Barcode Reader 3.2. Setup Procedure 3.2.1 Connect VGA Card and DDC Card with RS-232 cable.
3.2.2 Barcode Reader connect with keyboard and PC keyboard port. 3.2.3 Connect RS-232 Cable and JT198NP4FD3 with VGA Cable. 3.2.4 Connect Power Cord to JT198NP4FD3 Monitor. 3.3. DDC Key In Procedure 3.3.1 Run DDC.exe 3.3.2 Choose model number and conform the Time then Press “ENTER” key. 3.3.3 When appear the PIC “ choose DDC Card”, Press ALT+2 Enter DDC 2B test interface.
3.3.4 Press F8 to choose corresponding model.DAT (Q9-3.DAT press “ENTER” key) (The filename on this picture is a example only, the exact one, please refer to your model.) 3.3.
3.3.6 Key in the serial number or use the barcode reader to scan the barcode of the monitor, and press “ENTER” key. 3.3.7 The successful picture is as follows. ”Compare EDID ：OK! Press any key to continue”.
3.3.8 Let Q9-3 active then see the information in OSD, it shows ”Serial NO : PPZ0517A3178” (The Serial NO. provided above is a example only; the exact one, please refer to your monitor.) 3.4.
Connect the Q9-3 Monitor to PC with VGA Cable. Excute the EDID Editor, then Press Ctrl+F5. If the DDC is correct, you can see the information as follow: (The data on this picture is a example only; the exact one, please refer to your monitor.
Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Paste protection film to protect the monitor. (Figure 1) 1.2 Put the monitor in the PE bag and seal the bag with tape. (Figure 2/3) Figure 1 Figure 2 Figure 3 1.3 Put the cushions on the monitor. (Figure 4) 1.4 Place the monitor into the carton and then put all the accessories into the carton. At last, close the carton and seal it with tape. (Figure 5) 1.Power Cord 2.VGA Cable 3.
Disassembly Procedure 1. Disassembly of Stand unit from Monitor 1.1 Remove Dust Cover. Dust cover 1.2 Remove Stand Unit.
1.3 Unscrew 4 screws to remove Hinge. 2. Disassembly of Front Cover and Rear Cover 2.1 Unscrew two screws that secure Rear Cover to remove Front Cover.
2.2 Unscrew 2 screws to remove Rear Cover. Rear Cover 3. Disassembly of Main Board, Keypad Board and Panel Unit 3.1 Unscrew 6 screws to remove Shielding Plate.
3.2. Unscrew 7 screws and disconnect the wires to remove Main Board. Main Board 3.3. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides to remove Panel Unit and Keypad Board.
6. Troubleshooting Flow Chart START CHECK MAIN N Y CHECK 5V OK? POWER PCB CHECK AND I104,D130 SUROUND CAP OK? OK? Y N Y CHECK 3.3V OK? D807,I801,I801 I104,SUROUND CAP CHECK I104 3.3V SUROUND CAP OK? OK? Y N 1.8V OK? Y CHECK CHECK D807,I801,I801 Q107,SUROUND CAP OK? ViewSonic Corporation 38 Q107 1.
6.1.
6.2. NO DISPLAY Power key N Work ok Check N Keypad Check N 5V Check I104 Y Check N H V sync Check N I105 Check N P102 Check I/O cable Y Check R.G.B N DATA Check N I/O cable Check N Check P102 I105 Y Check N Check N C129,C130 X101 Check N Check VCC1.8V,3.
6.3. LOSE COLOR Some bits Lose color lost R or G or B Y Y Check N Check I105 I105 OR N Check P107 Sign R-pack Sign Cable soldering Y N Check I107 poor Check R104,R105.
6.4.
7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (Q9b-3) ViewSonic Model Number: VS11455 Serial No. Prefix: QD8 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 Accessories: PC Board Assembly: Cabinets: Cables: Documentation: Electronic Components: Packing Material: Plastics: Description Power Cord (German) 1.
BOM LIST (Q9b-3) ViewSonic Model Number: VS11455 Rev: 1a Serial No.
Item 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 ViewSonic P/N N/A N/A E-C-0404-1815 E-C-0404-1838 E-C-0404-1815 E-C-0404-1119 N/A N/A E-C-0404-1815 N/A E-C-0404-1815 E-C-0404-1838 E-C-0404-1815 E-C-0404-1838 E-C-0404-1815 E-C-0404-1838 N/A N/A
Item 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 ViewSonic P/N E-D-0403-0531 N/A N/A E-D-0403-0531 N/A N/A N/A N/A N/A N/A E-D-0403-0531 N/A N/A E-D-0403-0531 N/A N/A N/A E-D-0403-0531 N/A N/A N/A E-D-0403-1500 E-D-0403-150
Item 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 ViewSonic P/N E-D-0403-0531 N/A N/A E-FS-0410-0009 N/A M-WR-0828-0460 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A E-PC-0411-0083 E-00005306 N/A E-IC-0401-1270 E-IC-0401-2152 N/A N/A
Item 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 ViewSonic P/N N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A E-L-0407-0013 E-L-0407-0013 E-L-0407-0013 E-L-0407-0013 E-L-0407-0013 E-L-0407-0013 E-L-0407-0013 E-L-0407-0013 E-L-0407
Item 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 ViewSonic P/N N/A N/A E-00005732 N/A N/A N/A N/A N/A N/A E-R-0405-1757 E-R-0405-1757 E-R-0405-1757 N/A N/A E-R-0405-1757 E-R-0405-1757 E-R-0405-1757 E-R-0405-3214 N/A E-R-040
Item 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 ViewSonic P/N E-R-0405-3221 E-R-0405-3221 N/A N/A E-R-0405-3235 N/A N/A N/A E-R-0405-1757 N/A E-R-0405-2725 E-R-0405-2725 E-R-0405-3214 N/A E-R-0405-2725 E-R-0405-2725 E-R-0405-3214 E-R-0405-2306 N/A E-R-0405-2309 N/A E-R-0405-3213 N/A N/A E-R-0405-3214 N/A N/A N/A M-SW-0815-0182 M
8.
ViewSonic Corporation 52 Confidential - Do Not Copy Q9b-3
EXPLODED PARTS LIST (Q9b-3) ViewSonic Model Number: VS11455 Rev: 1a Serial No.
PACKING PART LIST (Q9b-3) ViewSonic Model Number: VS11455 Rev: 1a Item 1 2 3 4 5 6 7 8 9 10 11 12 13 ViewSonic Corporation 54 Confidential - Do Not Copy Q9b-3 ViewSonic P/N Ref.
9. Block Diagram AC INPUT 100V~220V SW Power supply 12V I801 D822,D823 T801 5V AUDIO I601 INVERTER I901 PANEL DISPLAY VLCD Q104 SPEAKER P601 D919 R929 Q901 3.3V I104 SCALAR I105 AUDIO INPUT P603 X101 SYNC R205 R206 R,G,B INPUT EEPROM I107 1.
10. Schematic Diagrams 5V_3V3 5V_3V3 VCC1V8 R126 NC BL_ADJ BL_ON 5V_3V3 C115 5V_3V3 5V_3V3 100 R128 P3 P3 JUMP 1 R129 NC NC +12V VCC1V8 3 R125 R127 10K adj_BACKLIGHT P3 +12V 2 5V_3V3 C113 +12V Q101 NC NC P6 R130 100 R131 10K VCTRL C114 P3 R147 NC 51 on_BACKLIGHT P3 C124 4.7U 50V 3 D124 1N4148 R148 1 2K 2 5V_3V3 D125 Q107 MMBT2907 1N4148 D128 D130 SB140 D129 VCC5V_3V3 C125 R149 1u 50V P1 100 PC5V VCC3V3 SB140 JUMP D126 5.6V C116 C117 0.
P102 13 12 11 10 9 8 7 6 5 4 3 2 1 PC5V P2 R106 56 C103 0.047u R105 56 C102 0.047u R104 56 C101 0.047u RIN P3 GIN P3 BIN P3 PC5V R103 75 1% HSI VSI R102 75 1% R101 75 1% R110 100 C105 0.047u R109 100 C106 0.047u R108 100 C107 0.047u CON13 D101 D102 1N4148 1N4148 D103 D104 1N4148 1N4148 D105 P3 GNDG P3 GNDB P3 D106 1N4148 1N4148 VCC3V3 100 14 14 R205 I108A 1 2 I108F 13 NC C108 SO-14 P3 SO-14 7 7 NC R112 2K2 HSYNC 12 L101 3.5X9*0.
VDVI VMPLLVPLL AVDD VDDP VDDC P1 RIN P1 GNDR P1 HSYNC P1 VSYNC P1 P1 DDCA_SDA DDCA_SCL 39 40 42 43 45 46 48 49 36 37 AVDD 51 R152 390 1% 62 C126 0.1u 61 BIN0P BIN0N GIN0P GIN0N SOGIN0 RIN0P RIN0N HSYNC0 VSYNC0 DDCA_SDA DDCA_SCL SDO VDD HOLD# CE# WP# SCK VSS SDI C128 10u 50V 2 1 6 5 70 71 72 73 REXT REFP GB1P/NC GB1N/NC GB2P/NC GB2N/NC GB3P/NC GB3N/NC REFM D127 1N4148 SDO SCZ SCK SDI TSUM16AK SST25VF010 19 R153 RST C129 22p 32 10K X101 14.
VLCD L109 3.5X9*0.8 P2 P107 VLCD C168 100u 16V C169 R190 R191 R192 0.1u P3 P3 P3 PA[12..13] PA[0..7] PB[12..21] PA[12..13] PA12 PA13 LVA3P LVA3M PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M PA[0..7] PB[12..
P701 JST-PH8P-2.
DC12_AUDIO L608 3.5X9*0.8 R606 used jump line,first. +12V + R620 4.7K C601 1000u/16V 3.9K I601 TDA7496L C610 220u/16V AUDIO_STANBY R611 10K + R610 10K MUTE ACTIVE LOW VP2 VP1 P3 10 Q601 2SC945 D601 1N4148 R601 100K 12 + 11 C602 22u/16V P3 VOLUME 16 15 R602 VOLUME SVR MUTE GND1 GND2 GND3 GND4 GND5 GND6 GND7 STBY VAROUT_L 6 VOLUME VAROUT_R C615 1 2 3 13 18 19 20 5 7 0.1u L LS RS R S L603 3.5X9*0.
P901 12V L901 Bead core 9mm T901 1,2 5V 1 7 5,6 5 6 1 + GND 10 2374301405P C903 2200P Q905 AP9977GM C915 + 1 C905 5P,3KV D905 1N4148 C908 4700PF/50V C909 NC 2 D907 C912 1N4148 0.01uF D908 1N4148 D902 1N4148 R910 NC R909 3.3K/1% D906 1N4148 D917 1N4148 4 3 2 1 NC C906 470uF/16V OUT R906 4.7 C907 2 IN 7 8 I902 NC 3 R905 3M,3KV P902 R907 4.7 0.
R820 22 1W C806 1000PF/1KV 220pF/1KV C828 100K/1/4WS R836 5 57 9 + + R821 C821 C822 22 1/2W 2200PF/500V 1000uF/16V C829 1000uF/16V D806 UF4007 100K/1/4WS 100K/1/4WS FERRITE CORE 6*10/3Ts L806 R843 Jumper 12V D821 GMR10H125C D823 1 31DQ06 + 470uF/16V R835 C823 100K/1/4WS R834 L803 5.2UH R837 220R/2WS R806 10K F802 5V 10 4 L804 5.2UH 7,8 D822 31DQ06 + C831 0.01uF L801 3.5*0.8*4.
11.
POWER PCB BOTTOM VIEW ViewSonic Corporation 65 Confidential - Do Not Copy Q9b-3
CON PCB TOP VIEW CON PCB BOTTOM VIEW ViewSonic Corporation 66 Confidential - Do Not Copy Q9b-3
* Reader’s 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 of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6.
