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| viewsonic VX912-4 model no. vs10162 19? color tft lcd display (VX912-4_sm rev. 1a jun. 2006) viewsonic 381 brea canyon road, walnut, california 91789 usa - (800) 888-8583 service manual
viewsonic corporation confidential - do not copy VX912-4 i copyright copyright ? 2006 by viewsonic corpor ation. all rights reserved. no part of this publication may be reproduced, transmitted, tran scribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, el ectronic, mechanical, magnetic, optical, chemical, manual or otherwise, witho ut the prior written permission of viewsonic corporation. disclaimer viewsonic makes no representations or warranties, either express ed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose. further, viewsonic reserves t he right to revise this publication and to make changes from time to time in the contents hereof without obligation of vi ewsonic to notify any person of such revision or changes. trademarks opt quest is a registered trademark of viewsonic corporation. viewsonic is a registered trademar k of viewsonic corporation. all other trademarks used within this document ar e the property of their respective owners. revision history revision sm editing date ecr number description of changes editor 1a 06/07/2006 initial release j. chang viewsonic corporation confidential - do not copy VX912-4 ii table of contents 1. precautions and safety notices 1 2. specification 4 3.front panel function control description 9 4.circuit description 11 5.adjustment procedure 23 6. troubleshooting flow chart 42 7. recommended spare parts list 45 8.exploded diagram and expl oded parts list 47 9.block diagram 50 10.schematic diagrams 51 11. pcb layout diagrams 58 viewsonic corporation confidential - do not copy VX912-4 1. precautions and safety notices 1. caution : no modification of any circuit should be attempted . service work should only be performed after you are thoroughly familiar with all of the following safety checks and servicing guide line 2. safety check : care should be taken while servicing this lcd display. because of the high voltage used in the inverter circuit. these voltage are exposed in such areas as the associated transformer circuits . 3. power supply requirements the external power converter for this display utilizes ac and dc cords , ac cord is detachable , but dc cord is permanently attached . any attempt to replace another ad apter could result in serious problem on the display . 4. leakage current hot check 4-1 plug the ac cord directly into the ac outlet. do not use an isolation transformer during this check. 4-2 connect a 1500 ohm , 10 watt resistor , paralleled by a 0.15uf capacitor between each metallic part and a good earth ground 4-3 use an ac voltmeter with 1000 ohm / volt or more sensitivity and measure the ac voltage across the combination 1500 ohm resistor and 0.15uf capacitor. 4-4 move the resistor connection to each exposed metallic part and measure the voltage. 4-5 reverse the polarity of the ac plug in the ac outlet and repeat the above measurement. 4-6 voltage measured must not exceed 1.5 volt rms, from any exposed metallic part to the ground. a leakage current tester may be used in the above hot check, in which case any ci rcuit measured must not exceed 1.0 milliamp. in the case of a measurement exceeding the 1.0 mi lliamp value, a rework is required to eliminate the chance of a shock hazard . to metal parts v ac voltmeter 1500 10w 0.15u . earth ground 1 viewsonic corporation confidential - do not copy VX912-4 correct methods : incorrect methods : only touch the metal-frame of the panel or the front cover of the monitor . do not touch the surface of the polarizer . surface of the panel is pressed by fingers & this may cause ? mura ? take out the monitor with cushion take out the monitor by grasping the lcd panel. that may cause ? mura?. 2 viewsonic corporation confidential - do not copy VX912-4 correct methods : in correct methods : place the monitor on a clean & soft foam pa d . place the monitor on foreign objects . that could scratch the surface of panel 3 viewsonic corporation confidential - do not copy VX912-4 2. specification general specification test resolution & frequency 1280x1024 @ 60hz test image size full size contrast and brightness controls factory default: contrast = 70%, brightness = 100% video interface analog input connector db-15 (a nalog), refer the appendix a digital input connector dvi-i ( digital), refer the appendix b default input connector defaults to the first detected input video cable strain relief equal to twice the weight of the monitor for five minutes video cable connector db-15 pin out compliant ddc 1/2b video signals 1. video rgb (analog) separate, composite, and sync on green 2. tmds (digital) video impedance 75 ohms (analog), 100 ohms (digital) maximum pc video signal 950 mv with no damage to monitor maximum mac video signal 1250 mv with no damage to monitor sync signals lvds ddc 1/2b compliant with revision 1.3 sync compatibility separate sync, composite sync, sog video compatibility shall be compatible with a ll pc type computers, macintosh computers, and after market video cards resolution compatibility 640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x 624, 1024 x 768, 11 52 x 864, 1152 x 870, 1280 x 720, 1280 x 960, 1280 x 1024 * the image vertical size might not be full screen. but the image vertical position should be at the center. exclusions not compatible with interlaced video 4 viewsonic corporation confidential - do not copy VX912-4 power supply internal power supply part number: fsp035-1pi01 input voltage range 90 to 264 vac input frequency range 47.5 to 63 hertz short circuit protection output can be shorted without damage over current protection 3.5 a typical at 12.0 vdc ( protect when short circuit ) leakage current 0.75ma (max) at 264vac / 50hz efficiency 77 % typical at 115vac full load fuse internal and not user replaceable power dissipation 35 watts (typ) max input ac current 1.2 arms @ 90vac, 0.7 arms @265vac audio interface(speake r specification) line input connection 3.5mm stereo jack line input signal 1.3vrms line input impendence 10kohm maximum power output 1w@<5% distortion signal to noise ratio 72db frequency response 200hz ? 20k distortion <5% thd @1k vibration there should be no au dio vibration with volume at 100% and treble/bass at default screen image there should be no affect on the screen image stability under any conditions. connector pc99 requirement audi o in lime green pantone # 577c cable type / length 3.5mm stereo cable / 1.8m length audio dpms speakers stay on where the rest of the monitor is in power ?saving. note: there us no guarantee <1w power consumption in active off mode when the audio cable is connected. 5 viewsonic corporation confidential - do not copy VX912-4 electrical requirement horizontal / vertical frequency horizontal frequency 30 ? 82 khz vertical refresh rate 50 ? 75 hz. maximum pixel clock 135 mhz sync polarity independe nt of sync polarity. timing table item timing analog digital 1 640 x 350 @ 70hz, 31.5khz yes yes 2 640 x 400 @ 60hz, 31.5khz yes yes 3 640 x 400 @ 70hz, 31.5khz yes yes 4 640 x 480 @ 50hz, 24.7khz yes no 5 640 x 480 @ 60hz, 31.5khz yes yes 6 640 x 480 @ 67hz, 35.0khz yes yes 7 640 x 480 @ 72hz, 37.9khz yes yes 8 640 x 480 @ 75hz, 37.5khz yes yes 9 640 x 480 @ 85hz, 43.27khz yes yes 10 720 x 400 @ 70hz, 31.5khz yes yes 11 800 x 600 @ 56hz, 35.1khz yes yes 12 800 x 600 @ 60hz, 37.9khz yes yes 13 800 x 600 @ 75hz, 46.9khz yes yes 14 800 x 600 @ 72hz, 48.1khz yes yes 15 800 x 600 @ 85hz, 53.7khz yes yes 16 832 x 624 @ 75hz, 49.7khz yes yes 17 1024 x 768 @ 60hz, 48.4khz yes yes 18 1024 x 768 @ 70hz, 56.5khz yes yes 19 1024 x 768 @ 72hz, 58.1khz yes yes 20 1024 x 768 @ 75hz, 60.0khz yes yes 21 1024 x 768 @ 85hz, 68.67khz yes yes 22 1152 x 864 @ 75hz, 67.5khz yes yes 23 1152 x 870 @ 75hz, 68.7khz yes yes 24 1280 x 1024 @ 60hz, 63.4khz yes yes 25 1280 x 1024 @ 75hz, 79.97khz yes yes 26 1280x 720 @ 60hz, 45khz (hdtv) yes yes 6 viewsonic corporation confidential - do not copy VX912-4 tft lcd panel 1 st source panel model number hsd hsd190me13-d10 type tn type with lvds interface active size 376.3 (h) x 301.1 (v) pixel arrangement rgb vertical stripe pixel pitch 0.294 mm glass treatment anti glare (hard coating 3h) # of backlights 4 ccfl edge-light (2 top / 2 bottom) backlight life 40000 hours (min) luminance (center) ? condition: ct = 6500k, contrast = max, brightness = max 300 cd/m2 (typ after 30 minute warm up) 240 cd/m2 (min after 30 minute warm up) brightness uniformity 70% (min) w = max luminance of 9 points/min luminance of 9 points contrast ratio 700:1 (typ), 450:1 (min) color depth 16.2 million colors (6 bits + 2 bits frc) viewing angle (horizontal) @ cr>10 typical: 150 minimum: 130 @ cr>5 typical: 160 minimum: n/a viewing angle (vertical) @ cr>10 typical: 135 minimum: 115 @ cr>5 typical: 150 minimun: n/a response time 10%-90% @ ta=25c 5 ms (tr= 1,5 ms, tf = 3.5 ms) (typ) 10 ms (tr= 3 ms, tf = 7 ms) (max) panel defects please see panel quality specifications. 7 viewsonic corporation confidential - do not copy VX912-4 mechanical dimension (desktop) width 431 mm (17 inch) height 468 mm (18.4 inch) depth 201 mm (7.9 inch) monitor weight 6.7 kg (14.8 lbs) dimension (head only / wall mount) width 431 mm (17 inch) height 370 mm (14.6 inch) depth 66 mm (2.6 inch) monitor weight 5.3 kg (11.7 lbs) ergonomics tilt up from 0o up to R 20o tilt down from 0o down to -3o ~ -5 o environmental z operating temperature : 0c to +40c z storage temperature : -20c to +60c z operating relative humidity : 20% to 90% rh non-condensing z storage relative humidity : 5% to 90% rh non-condensing z operating altitude : 0 to +3,000 meters z storage altitude : 0 to +12,000 meters 8 viewsonic corporation confidential - do not copy VX912-4 3. front panel function control description 9 viewsonic corporation confidential - do not copy VX912-4 10 viewsonic vx912- 4 main menu controls adjust the menu items shown below by using the up and down buttons. 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. contrast adjusts the difference between the image background (black level) and the foreground (white level). brightness adjusts the lamps current to cont rol the screen brightness. color adjust provides several color options: preset color temperatures and custom user co lor which allows you to adjust red (r), green (g), and blue (b). the factory setting for this product is 6500k (6500 kelvin). 9300k ? adds blue to the screen imag e for cooler white (used in most office settings with fluorescent lighting). 5400k ? adds red to the screen imag e for warmer white and richer red. custom user color ? individual adjustments for red, green, and blue. 1 to select color (r, g or b) press button [2]. 2 to adjust selected color, press or . 3 when you are finished making all color adjustments, press button [1] twice. 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). 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 controls are explained below: h . size (horizontal size) adjusts th e width of the screen image. note: vertical size is automa tic with your lcd display. h./v. position adjusts horizontal and vertical position of the screen image. you can toggle between horizontal and vertical by pressing button [2]. horizontal moves the screen imag e to the left or to the right. vertical moves the screen image up and down. fine tune sharpens focus by aligning the illuminated text and/or graphic characters. sharpness adjusts the clarity and focus of the screen image. setup menu controls are explained below: language allows you to choose the language used in the menus and control screens. resolution notice displays the recommended resolution for this lcd display. enable allows the resolution notice to appear on-screen. disable will not allow the resolution notice to appear on-screen. osd timeout sets the length of time an on-screen display screen is displayed. for example, with a?15 second? setting, if a control is not pushed within 15 seconds, the display osd disappears. osd position allows you to move the on-screen display menus and control screens. memory recall returns adjustments to the original factory settings if th e display is operating in a factory preset timing mode listed in this user guide. viewsonic corporation confidential - do not copy VX912-4 11 4. circuit description 1. outline 3.1. power on/off , led, button"2" , up arrow- button , down arrow button , button"1" , button , down arrow button , button"1" , on the front panel. 3.2. video signal connector, and ac-in are located on the back side of the cabinet. 3.3. osd menu includes the following function; auto image adjust contrast / brightness color adjust information manual image adjust setup menu memory recall 3.4. contrast and brightness can be directly controlled with up / dn key. . 2. connectors 2.1 ac inlet : cee22 typed connector 2.2 video signal connector 14p + mini d-sub pin mnemoni signa l 1 rv red video 2 gv green video 3 bv blue video 4 n c n one 5 gnd ground ( ddc return ) 6 r g red gnd 7 g g green gnd 8 b g blue gnd 9 +5v + 5v ( for ddc ) 10 s g s y nc gnd 11 n c n one 12 sd a ddc dat a 13 hs horizontal s y nc 14 vs vertical s y nc 15 sc l ddc cloc k cn6 db15hd 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 16 17 viewsonic corporation confidential - do not copy VX912-4 12 3. electrical specifications 3.1. standard conditions display area 338 x 270 mm video signal 0.7 vpp contrast 70% brightness max. ambient 20 +/- 5 c input ac warming up > 30 min display 1280 x 1024 3.2. power 3.2.1. power supply input voltage 90 -240 ~volts power frequency input current 50/ 60 hz +/-3hz <1.5arms @ 90vac <0.75arms@240vac inrush current 90a(max.) at 230vac power consumption 50watt output voltage @0-3.0a load 12vdc +/-5% 3.2.2. power management state power indicator on 40watt green standby <1watt amber off <1watt 3.3. acceptable timing if your timing is within following specification, this lc d display can automatically function with a certain position. horizontal: sync frequency : 30~81 khz vertical: sync frequency : 56~85hz(1280x1024,75hz) viewsonic corporation confidential - do not copy VX912-4 13 3.4. signal level and input impedance 3.4.1. video signal level this lcd display is adjusted at the factory using 0,7 vp-p video signal. 3.4.2. sync signal level h/v separate : ttl level 3.4.3. input impedance video input : 75 ohms sync input : > 1 k ohms 4. signal cable : signal cable with mini d-sub 15p connectors at both ends. length : 1.8 meter. viewsonic corporation confidential - do not copy VX912-4 14 5. edid data analog edid ______________________________________________________________________ viewsonic corporation edid version # 1, revision # 3 ddctest for: viewsonic vx912-3 ______________________________________________________________________ ______________________________________________________________________ 128 bytes of edid code: 0 1 2 3 4 5 6 7 8 9 ________________________________________ 0 | 00 ff ff ff ff ff ff 00 5a 63 10 | 1c d7 01 01 01 01 01 0f 01 03 20 | 0e 26 1e 78 2e 57 45 a4 57 47 30 | 9d 25 17 50 54 bf ef 80 81 80 40 | 81 40 71 4f 01 01 01 01 01 01 50 | 01 01 01 01 30 2a 00 98 51 00 60 | 2a 40 30 70 13 00 78 2d 11 00 70 | 00 1e 00 00 00 ff 00 50 5a 38 80 | 30 35 30 31 30 30 30 30 31 0a 90 | 00 00 00 fd 00 32 4b 1e 52 0e 100 | 00 0a 20 20 20 20 20 20 00 00 110 | 00 fc 00 56 58 39 31 32 2d 33 120 | 0a 20 20 20 20 20 00 49 ______________________________________________________________________ (08-09) id manufacturer name ________________ = vsc (11-10) product id code _____________________ = d71c (12-15) last 5 digits of serial number ______ = not used (16) week of manufacture _________________ = 01 (17) year of manufacture _________________ = 2005 (10-17) complete serial number ______________ = see descriptor block (18) edid version number _________________ = 1 (19) edid revision number ________________ = 3 (20) video input definition: analog signal 0.700, 0.300 (1.000 vp-p) separate syncs, composite sync, sync on green (21) maximum horizontal image size ________________ = 380 mm (22) maximum vertical image size __________________ = 300 mm (23) display gamma ________________________________ = 2.20 (24) power management and supported feature(s): active off/very low power, standard default color space, viewsonic corporation confidential - do not copy VX912-4 15 preferred timing mode display type = r/g/b color (25-34) chroma info: red x - 0.642 green x - 0.278 blue x - 0.146 white x - 0.313 red y - 0.341 green y - 0.616 blue y - 0.090 white y - 0.329 (35) established timing i: 720 x 400 @ 70hz (ibm,vga) 640 x 480 @ 60hz (ibm,vga) 640 x 480 @ 67hz (apple,mac ii) 640 x 480 @ 72hz (vesa) 640 x 480 @ 75hz (vesa) 800 x 600 @ 56hz (vesa) 800 x 600 @ 60hz (vesa) (36) established timing ii: 800 x 600 @ 72hz (vesa) 800 x 600 @ 75hz (vesa) 832 x 624 @ 75hz (apple,mac ii) 1024 x 768 @ 60hz (vesa) 1024 x 768 @ 70hz (vesa) 1024 x 768 @ 75hz (vesa) 1280 x 1024 @ 75hz (vesa) (37) manufacturer's reserved timing: 1152 x 870 @ 75hz (apple,mac ii) (38-53) standard timing identification: 1280 x 1024 @60hz 1152 x 864 @75hz 1024 x 768 @85hz 800 x 600 @85hz 640 x 480 @85hz not used not used not used ______________________________________________________________________ (54-71) detailed timing / descriptor block 1: 1280x1024 pixel clock: 108.00 mhz ______________________________________________________________________ viewsonic corporation confidential - do not copy VX912-4 16 horizontal image size: 376 mm vertical image size: 301 mm refreshed mode: non-interlaced normal display - no stereo horizontal: active time: 1280 pixels blanking time: 408 pixels sync offset: 48 pixels sync pulse width: 112 pixels border: 0 pixels frequency: 63.98 khz vertical: active time: 1024 lines blanking time: 42 lines sync offset: 1 lines sync pulse width: 3 lines border: 0 lines frequency: 60.02 hz digital separate, horizontal polarity (+) vertical polarity (+) ______________________________________________________________________ (72-89) detailed timing / descriptor block 2: monitor serial number: pz8050100001 ______________________________________________________________________ (90-107) detailed timing / descriptor block 3: monitor range limits: min vertical freq - 50 hz max vertical freq - 85 hz min horiz. freq - 30 khz max horiz. freq - 82 khz pixel clock - 140 mhz secondary gtf - not supported ______________________________________________________________________ (108-125) detailed timing / descriptor block 4: monitor name: vx912-3 (126) no extension edid block(s) (127) checksum ok viewsonic corporation confidential - do not copy VX912-4 17 digital edid ______________________________________________________________________ viewsonic corporation edid version # 1, revision # 3 ddctest for: viewsonic vx912 ______________________________________________________________________ 128 bytes of edid code: 0 1 2 3 4 5 6 7 8 9 0 | 00 ff ff ff ff ff ff 00 5a 63 10 | 1c d7 01 01 01 01 01 0f 01 03 20 | 80 26 1e 78 2e 57 45 a4 57 47 30 | 9d 25 17 50 54 bf ef 80 81 80 40 | 81 40 71 4f 31 0a 01 01 01 01 50 | 01 01 01 01 30 2a 00 98 51 00 60 | 2a 40 30 70 13 00 78 2d 11 00 70 | 00 1e 00 00 00 ff 00 50 5a 38 80 | 30 35 30 31 30 30 30 30 31 0a 90 | 00 00 00 fd 00 32 4b 1e 52 0e 100 | 00 0a 20 20 20 20 20 20 00 00 110 | 00 fc 00 56 58 39 31 32 2d 33 120 | 0a 20 20 20 20 20 00 49 ______________________________________________________________________ (08-09) id manufacturer name ________________ = vsc (11-10) product id code _____________________ = d71c (12-15) last 5 digits of serial number ______ = not used (16) week of manufacture _________________ = 01 (17) year of manufacture _________________ = 2005 (10-17) complete serial number ______________ = see descriptor block (18) edid version number _________________ = 1 (19) edid revision number ________________ = 3 (20) video input definition: analog signal 0.700, 0.300 (1.000 vp-p) separate syncs, composite sync, sync on green (21) maximum horizontal image size ________________ = 380 mm (22) maximum vertical image size __________________ = 300 mm (23) display gamma ________________________________ = 2.20 (24) power management and supported feature(s): active off/very low power, standard default color space, preferred timing mode display type = r/g/b color (25-34) chroma info: red x - 0.642 green x - 0.278 blue x - 0.146 white x - 0.313 viewsonic corporation confidential - do not copy VX912-4 18 red y - 0.341 green y - 0.616 blue y - 0.090 white y - 0.329 (35) established timing i: 720 x 400 @ 70hz (ibm,vga) 640 x 480 @ 60hz (ibm,vga) 640 x 480 @ 67hz (apple,mac ii) 640 x 480 @ 72hz (vesa) 640 x 480 @ 75hz (vesa) 800 x 600 @ 56hz (vesa) 800 x 600 @ 60hz (vesa) (36) established timing ii: 800 x 600 @ 72hz (vesa) 800 x 600 @ 75hz (vesa) 832 x 624 @ 75hz (apple,mac ii) 1024 x 768 @ 60hz (vesa) 1024 x 768 @ 70hz (vesa) 1024 x 768 @ 75hz (vesa) 1280 x 1024 @ 75hz (vesa) (37) manufacturer's reserved timing: 1152 x 870 @ 75hz (apple,mac ii) (38-53) standard timing identification: 1280 x 1024 @60hz 1152 x 864 @75hz 1024 x 768 @85hz 800 x 600 @85hz 640 x 480 @85hz not used not used not used ______________________________________________________________________ (54-71) detailed timing / descriptor block 1: 1280x1024 pixel clock: 108.00 mhz ______________________________________________________________________ viewsonic corporation confidential - do not copy VX912-4 19 horizontal image size: 376 mm vertical image size: 301 mm refreshed mode: non-interlaced normal display - no stereo horizontal: active time: 1280 pixels blanking time: 408 pixels sync offset: 48 pixels sync pulse width: 112 pixels border: 0 pixels frequency: 63.98 khz vertical: active time: 1024 lines blanking time: 42 lines sync offset: 1 lines sync pulse width: 3 lines border: 0 lines frequency: 60.02 hz digital separate, horizontal polarity (+) vertical polarity (+) ______________________________________________________________________ (72-89) detailed timing / descriptor block 2: monitor serial number: pz8050100001 ______________________________________________________________________ (90-107) detailed timing / descriptor block 3: monitor range limits: min vertical freq - 50 hz max vertical freq - 85 hz min horiz. freq - 30 khz max horiz. freq - 82 khz pixel clock - 140 mhz secondary gtf - not supported ______________________________________________________________________ (108-125) detailed timing / descriptor block 4: monitor name: vx912-3 (126) no extension edid block(s) (127) checksum ok viewsonic corporation confidential - do not copy VX912-4 20 6. theory of operation this section describes the function of the lcd monitor per functional block. this monitor includes mb board, power board and button board. 6.1 mb board the mb board is a two-layer, single-landed design with ground and internal planes provided. dc power from the power board enter the board through a 6p connector. other connector on the board is for button board .the vga cable is a signal cable that contains video signal, sync signal and ddc signal from pc vga adapter. this system board consists of 4 functional areas : flat panel controller, mcu with flash rom , power regulator . 6.1.1 flat panel controller? mst8131a (u3) the heart of the system board is mstart mst8131a. the mst8131a is a graphics processing ic for lcd monitor. it provides all key ic functions required for lcd panel. on-c hip functions include a high-speed triple-adc , pll, high scaling engine, osd controller. a) clock generation : crystal input clock (tclk and xtal). this is the input pair to an internal crystal oscillator and corresponding logic. a 14.318 mhz crystal is recommended. b) analog to digital converter: the mst8131a chip has three adc's (a nalog-to-digital converters), one for each color (red, green and blue) .the analog rgb signals are connected to mst8131a as described below pin name pin number red + 63 red - 62 green + 60 green - 59 blue + 58 blue - 57 c). osd : the mst8131a has a fully programmable ,high-quality osd controller. the on-chip static ram(4096 words by 24 bits) stores the cell map and the cell definitions.. d). mtv312 micro controller: the mtv312 micro controller(m cu) serves as the system micro controller. it?s programs the mst8131a and manages other devices in the system such as the keypad, the backlight, led, audio and non-volatile ram. using general purpose input/output (gpio) pins. viewsonic corporation confidential - do not copy VX912-4 21 pin number pin name pin number usage 21 p1.3 key / power on ,off 13 p3.4 nv_ram (u4) sda 14 p3.5 nv_ram (u4) scl 25 p1.7 key_down 9 p6.3 key_right 24 p1.6 key_up 16 p6.2 key_left 37 p4.1 key_mute 34 p5.6 vga connector 23 p1.5 key_select 42 p5.3 led_red 41 p5.4 led_green 32 p6.6 lcd panel power1 on / off control 3 p5.0 lcd panel power2 on / off control 36 p4.0 backlight on / off control e). panel power sequencing ( vddctrl1, 2) ( pin 32, 3) : the mtv312 has two dedicated outputs vddctrl1 and 2 ( pin32 and pin3) to control lcd power sequencing once data and control signals are stable. f). panel interface (pin 1~25, pin75~12 8) : the mtv312 driver interface is highly programmable. it supports dual bus / dual port for sxga drivers. 6.1.2 power regulator mc34063a (u6),aic1739 (q4) : the mc34063a is a monolithic control ic containing the primary functions required for dc to dc converters. the device consists of an internal temperature compensated reference, comparator, controlled duty cycle. oscillator with an active current sense circuit. desire d output voltage are determined by the equation, volt = 1.25 ( 1 + r67 / r66), in this case, the output voltage are 3.3 volts the aic1739 is a low dropout positive adjustable regulator with minimum of 300ma output current capability. so it is well suited for 3.3 v and 2.5 v regulator . 6.1.3 power regulator mc34063a (u7) : the mc34063a is a mono lithic control ic containing the primary functions required for dc to dc converters. the device consists of an internal temperature compensated reference, comparator, controlled duty cycle. oscillator with an active current sense circuit. desire d output voltage are determined by the equation, volt = 1.25 ( 1 + r85 / r86), in this case, the output voltage are 5.0 volts for panel power. viewsonic corporation confidential - do not copy VX912-4 22 6.3 power(inverter) board this is a specific power(inverter) power board for ve912 monitor 40w 12v 3.5a output power and backlight which converters 12 vdc to drive four cold cathode fluorescence tubes. 6.3.1 inverter electrical specif ication described as below. rated input voltage 12vdc input voltage range 11.4 ~ 12.6 vdc input current <2a input on / off control voltage 2~3.3 for on , 0~1 for off rated output strike-on voltage 1500vrms rated output voltage 912vrms at 7ma rate output frequency 40~50khz output rated ourput current 7~8 ma 6.3.2 power this is a general purpose ac / dc adapter which converter 90~240 vac to a stabilized dc voltage 12 v with rated output current of 4.16a . electrical sp ecification described as below. rated input voltage 90~240 vac , 50 / 60hz operation input voltage 90~260 vac , 47 ~ 63hz input current <1.5a inrush current <100a@120vac standby input voltage 12vdc output voltage regulation +/-5% output ripple & noise 120mvp-p rate output current <3.5a turn-on delay <3secs viewsonic corporation confidential - do not copy VX912-4 23 5. adjustment procedure function test (1) test equipment color video signal & pattern generato r (or pc with sxgv resolution ) (2) test condition warm-up at least 30mins is necessary under followi ng condition before function test & alignment : a. room temperature b. with full-white screen , rgb , black pattern c. with cycled display modes. test display modes item timing analog digital 1 640 x 350 @ 70hz, 31.5khz yes yes 2 640 x 400 @ 60hz, 31.5khz yes yes 3 640 x 400 @ 70hz, 31.5khz yes yes 4 640 x 480 @ 60hz, 31.5khz yes yes 5 640 x 480 @ 67hz, 35.0khz yes yes 6 640 x 480 @ 72hz, 37.9khz yes yes 7 640 x 480 @ 75hz, 37.5khz yes yes 8 640 x 480 @ 85hz, 43.27khz yes yes 9 720 x 400 @ 70hz, 31.5khz yes yes 10 800 x 600 @ 56hz, 35.1khz yes yes 11 800 x 600 @ 60hz, 37.9khz yes yes 12 800 x 600 @ 75hz, 46.9khz yes yes 13 800 x 600 @ 72hz, 48.1khz yes yes 14 800 x 600 @ 85hz, 53.7khz yes yes 15 832 x 624 @ 75hz, 49.7khz yes yes 16 1024 x 768 @ 60hz, 48.4khz yes yes 17 1024 x 768 @ 70hz, 56.5khz yes yes 18 1024 x 768 @ 72hz, 58.1khz yes yes 19 1024 x 768 @ 75hz, 60.0khz yes yes 20 1024 x 768 @ 85hz, 68.67khz yes yes 21 1152 x 864 @ 75hz, 67.5khz yes yes 22 1152 x 870 @ 75hz, 68.7khz yes yes 23 1280 x 1024 @ 60hz, 63.4khz yes yes 24 1280 x 1024 @ 75hz, 79.97khz yes yes 25 1280x 720 @ 60hz, 45khz (hdtv) yes yes viewsonic corporation confidential - do not copy VX912-4 24 test pattern item test condition pattern specification remark 1 frequency & performance cross-hatch pattern no noise is allow & all color is clear pattern 1 2 monitor saturation 16-gray scale pattern 3~4 level need to saturated when brightness & contrast is 100% pattern 2 3 rgb color performance rgb color check the color temperature of rgb signal color pattern 3, 4, 5 4 sub-pixel defect rgb color check th e sub-pixel defect pattern 3, 4 , 5 5 full white full white check the brightness ,cr & bright pixel defect pattern 6 6 full black full black pattern 7 7. 5-cycle pattern 5-cycle pattern check the bu pattern 8 8. 1-dot pattern 1-dot pattern check the flicker pattern 9 pattern 1 pattern2 pattern 3 pattern4 viewsonic corporation confidential - do not copy VX912-4 25 pattern 5 pattern6 pattern 7 pattern 8 pattern 9 viewsonic corporation confidential - do not copy VX912-4 26 firmware update procedure : when you received a received monito r , please check whether the firmware version. if not , please following procedure to upgrade to the latest version . 1. equipment needed : - VX912-4 - pc ( personal computer ) - lpt cable - fixture (for lm5isp) - firmware upgrade program - 2. connection : to pc to monitor appendix a : how to install the software for isp : 0. to setup isp environment : hardware: pc or notebook, parallel(printer) cable, isp tooling. software: if os was win2000 or winxp , please install ?port95nt.exe? in order to ensure can execute isp program, please set bios in pc or notebook as fig 0.0 fig 0.0 0.1 double-click the ? port95nt.exe? in windows & install the program. , see fig 0.1 fig 0.1 viewsonic corporation confidential - do not copy VX912-4 27 0.2 keep on press ? next ? 4 times to go thr ough the installation processes, see fig. 0.2 fig. 0.2 0.3 choose ? typical ? then press ? next ? , see fig. 0.3 fig. 0.3 viewsonic corporation confidential - do not copy VX912-4 28 0.4 keep on press ? next ? 4 times to go thr ough the installation processes, see fig. 0.4 fig. 0.4 0.5 install completed , restart the pc or notebook. see fig 0.5 fig. 0.5 viewsonic corporation confidential - do not copy VX912-4 29 1. install isp 1.1 user could download isp driver and port95nt install from myson century website ( www.myson.com.tw ) 1.2 after extracting the zip file , the total files list as fig 1.0 , and double click the file of setup.exe to install. fig 1.0 1.3 press ? next ? button to continue., see fig 1.1 fig 1.1 viewsonic corporation confidential - do not copy VX912-4 30 1.4 keep default setting or press ? change ? button for selecting the path that you want , and then press ? next ? button to continue , see fig 1.2 fig 1.2 1.5 press ? install ? button to continue , see fig 1.3 fig. 1.3 viewsonic corporation confidential - do not copy VX912-4 31 1.6 installation has finished , press ? finish ? button , see fig 1.4 fig. 1.4 viewsonic corporation confidential - do not copy VX912-4 32 appendix b : how to use software to upgrade the bios : 2.1 after installation , we could find the shortcut in the setting path or the program bar ( default setting ) , see fig 2.1 fig. 2.1 2.2 security file is a key to use isp func tion , press ? ok ? button , see fig 2.2 fig. 2.2 viewsonic corporation confidential - do not copy VX912-4 33 2.3 the warning is used to remind user of that different cp u rate may cause isp function fail. (it?s limited by iic protocol ) , press ? ok ? button , see fig 2.3 fig. 2.3 2.4 press ? create security file ? button to key in security co de . adjusting bar to decrease speed of iic bus , see fig. 2.4 . fig. 2.4 s p eed of iic bus viewsonic corporation confidential - do not copy VX912-4 34 2.5 fig 2.5 shows the setting for security code of software isp . it needs 2 command no. and key in command sequentially for 7c , 4c , 77. the command no. and command must be set by user while coding. about the detailed of setting , please refer to section 6 boot code of isp . fig. 2.5 viewsonic corporation confidential - do not copy VX912-4 35 appendix c : use isp to program mcu 3.1 select mtv type first , load the binary or intel hex file that you want to program into the mcu , and select ? auto? item , then press ? run ? button , see fig3.1 fig. 3.1 3.2 if user change the mtv type , it must load file again , or the buffer of lo ad file will be cleared . 3.3 crc ( cyclic redundancy check ) : the host can check crc register?s result instead of reading every byte in flash . ste p 3 ste p 1 ste p 2 ste p 4 viewsonic corporation confidential - do not copy VX912-4 36 the message of check mcu crc ok means that the host verify ok for the progress of program , see fig.3.2 fig. 3.2 viewsonic corporation confidential - do not copy VX912-4 37 1. packing procedure 1.1 paste protection film to protect the monitor (figure.1) 1.2 put the monitor in epe bag & seal the with tape . (figure.2) figure.1 figure.2 1.3 put the cushion on the monitor (figure.3) 1.4 put the monitor into carton & put all the accessories into the carton .then close the carton . (figure.4) (figure 3) (figure 4) power cord q sg viewsonic corporation confidential - do not copy VX912-4 38 2. disassemble monitor 2.1 turn the monitor , face to back-side & take the i/o cover off. (figure 5) 2.2 remove the stand back cover (figure 6) (figure 5) (figure 6) 2.3 remove the 4pcs of black hinge screw & separate the stand & head part (figure 7) 2.4 face-down & put the monitor on soft surface of desktop (figure 8) figure 7 figure 8 screws screws viewsonic corporation confidential - do not copy VX912-4 39 2.5 remove the 4 black screw on 4 corners .& separate the cover & front-bezel (figure 9) 2.6 remove the screws which for fixed the b/b & pull th e cable out from the conn ector on m/b (figure 10) figure 9 figure 10 2.7 remove the b/b (figure 11) 2.8 remove the screws on pcb shield & remove it . (figure 12) figure 11 figure 12 screws viewsonic corporation confidential - do not copy VX912-4 40 2.9 remove the mb-lcd connector & loosen the 4 screws on pcb holder . (figure 13) 2.10 separate the pcb holder & panel . (figure 14) figure 13 figure 14 2.11 loosen the 4 screws on the sides of panel (figure 15) 2.12 remove the front bezel & panel (figure 16) figure 15 figure 16 2.13 remove the 4 hexagon screws beside the dvi & d-sub connector . (figure 17) 2.14 remove the screws which fixed the power board & mainboard (figure 18) figure 17 figure 18 screws viewsonic corporation confidential - do not copy VX912-4 41 viewsonic corporation confidential - do not copy VX912-4 42 6. troubleshooting flow chart no power viewsonic corporation confidential - do not copy VX912-4 43 no characters , missing color viewsonic corporation confidential - do not copy VX912-4 44 always show no signel viewsonic corporation confidential - do not copy VX912-4 45 7. recommended spare parts list rev: 1a serial no. prefix: q8d item description ecr/ecn viewsonic p/n ref. p/n location universal number# qt'y 1 board assembly: power board adp/inv,fsp043-2pi01 90~264v b-00003993 as05b312d00 power board 1 2 main board - l9ta m/b assy(rtd2523-lf) b-00005431 1sl9v0mb041 main board 1 3 button board l7vd b-00005207 1sl9v0bb003 button board 1 4 cabinets: stand cover (ebl9v002,rev3a c-00001778 ebl9v002015 stand cover 1 5 base ass'y stand sub assy l9vdq-4 gp c-00005372 37l9v0su002 stand 1 6 front bezel assembly l9vdq-1a sub assy gp c-00005432 34l9v0lb018 front bezel assembly 1 7 back cover assembly c-00005376 35l9v0ls009 back cover assembly 1 8 cables: vga cable (15/15p,1.8m)l7vd cb-00002602 ddl7vdpc005 vga cable 1 9 dvi cable l0t mb-dvi(24p,rev2a) gp cb-00003440 dd0l0tth108 dvi cable 1 10 mb-lcd cable (30p,140mm,linktec,au)l9va cb-00004152 dd0l9vlc023 mb-lcd cable 1 11 audio cable (st,1.8m)black w9za) gp cb-00005211 ddw9zapa009 audio cable 1 12 cable button-mb (10p/8p,240mm)w0e cb-00005371 dd0w0eth002 cable button-mb 1 13 speaker assembly l9vdq fg-te230 e-00005213 dn0te230f06 speaker assembly 1 14 lcd panel 19" hsd190me13-d10 5ms e-00005370 aa90me130f5 lcd panel 1 15 hardware: hinge cover hw-00005216 3fl9v0hs002 hinge cover 1 16 panel to l/r bracket screw m3.0*6.0-i(ni) m-scw-0824-6800 mm30060ibj8 panel to l/r bracket 4 17 pcbas to metal shielding screw f3.0*6-b(ni) m-scw-0824-0813 mf30060bbj6 pcbas to metal shielding 7 18 miscellaneous: dvi&d-sub to shielding io nut li1(mbli1004 m-ms-0808-8986 mbli1004018 dvi&d-sub to shielding 4 19 lcd film l9v(jxl9v001 m-ms-0808-9682 jxl9v001010 lcd film 1 20 rubber plug vesa l9v(gal9v002 m-ms-0808-9815 gal9v002014 rubber plug 4 21 documentation: user guide (VX912-4) l9vd-h(hgl9v023,r3a) dc-00005433 hgl9v023017 user guide 1 22 5ms sticker VX912-4 l9vd-h(hcl9v022,rev3a dc-00005434 hcl9v022017 5ms sticker 1 23 packing material: carton vx912 l9vd(hfl9v005,rev3a p-00001432 hfl9v005018 carton 1 24 cushion end cap-r l9v(hbl9v002,rev3a) p-fm-0602-0896 hbl9v001019 cushion 1 25 cushion end cap-l l9v(hbl9v001,rev3a p-fm-0602-0897 hbl9v002015 cushion 1 26 epe bag m-ms-0808-9817 hal9v002014 epe bag 1 m-model (VX912-4m) item ecr/ecn viewsonic p/n ref. p/n location universal number# qt'y 1 accessories: power cord 3p 1.8m(usa)v04vs350012180 a-pc-0106-0224 dm333181g97 power cord 1 p-model (VX912-4p) item ecr/ecn viewsonic p/n ref. p/n location universal number# qt'y 1 accessories: power cord sp-305+is-14 3p 1.8m(twn)b a-00003642 dm33t181004 power cord 1 g-model (VX912-4g) item ecr/ecn viewsonic p/n ref. p/n location universal number# qt'y 1 accessories: power cord a-pc-0106-0306 dm333181s01 power cord 1 2 qc-pass label dc-00003444 hcl7v026017 qc-pass label 1 3 vscn warranty card dc-00003445 hdl7v005011 warranty card 1 4 warranty sticker m-00003446 hcl7v023018 warranty sticker 1 5 address label dc-00003443 hcl7v024014 address label 1 e-model (VX912-4e) item ecr/ecn viewsonic p/n ref. p/n location universal number# qt'y 1 accessories: power cord sp-023+is-14 1.8m(b)eu a-pc-0106-0227 dm333181801 power cord 1 pwr cord sp-60+is-14h05vv-f 3p 1.8 a-00003644 dm333181703 power cord 1 remark 1: remark 2: all revised rspls with newly added items or any change made should be highlighted and correlated with the ecn/ecr approved by viewsonic corporation. this is to eliminate repeated cross checks of each item between this version and prior versions. above listed items are examples, supplier can expand the rows to add more necessary items. description description description documentation: description recommended spare parts list (VX912-4) viewsonic model number: vs10162 electronic components: viewsonic model number: vs10162 rev: 1a serial no. prefix: q8d item viewsonic p/n ref. p/n description location universal number# q'ty 1 n/a 1l9vzhxvs40 l9v lcd monitor(l9vd-h,VX912-4)usa gp 2 b-00004169 21l9tamb090 l9ta m/b assy(rtd2523-lf) gp 1 3 n/a 31l9tass079 l9ta m/b s/s assy(rtd2523-lf) gp 1 4 n/a 23l7vdbb001 l7vd button/b assy gp 1 5 n/a dfhd08mr319 conn dip header 8p 1r mr(p2.0,h4.1) gp cn1 1 6 n/a beyg0014da0 led(dip) yellow/green(l-3wygw-f01) gp led1 1 7 n/a dal7vdtb113 pcb(button) l7vd tl(1l,180*15,reva) gp 1 8 n/a dhp0002b205 switch puch button(pt-002-b2,50ma,12v)gp sw1,sw2,sw3,sw4,sw5 5 9 b-00003993 as05b312d00 adp/inv,fsp043-2pi01 90~264v rev:d gp 1 10 n/a 24l9v0lb042 l9vd-h lcd bezel assy gp 1 11 n/a 36l9v0ps006 l9vdq-1a pcb shielding assy spk gp 1 12 n/a fal9v004017 pcb shding l9vdq-4(fal9v004,r3a)spk gp 1 13 n/a fcl9v001010 shielding mylar l9vdq-4(fcl9v001,r3a)gp 1 14 n/a fcl9v003012 i/o mylar l9vdq-4(fcl9v003,rev3a) gp 1 15 c-00005432 34l9v0lb018 l9vdq-1a lcd bezel sub assy gp 1 16 n/a eal9v009019 lcd bezel(spk) l9vdq-1a(eal9v009,r3a) gp 1 17 n/a eal9v006010 lcd mask l9vdq-4(eal9v006,rev3a) gp 1 18 n/a ebl9v004018 control button l9vdq-4(ebl9v004,r3a) gp 1 19 m-ms-0808-9401 ebl7v028019 lens l7vd(ebl7v028,rev3a)gp 1 20 m-ms-0808-9243 fel7v003019 logo front-vsc-38mm l7vc(rev3a)gp 1 21 m-ms-0808-9402 fel7v007014 bird logo l7vd(fel7v007,rev3a)gp 1 22 n/a fbl9v011014 lcd panel lock metal l9vdq(r3a)gp 2 23 n/a fcl9v002016 power mylar l9vdq-4(fcl9v002,rev3a) gp 1 24 m-scw-0824-6802 mm30040ibj9 screw m3.0*4.0-i(ni) gp 8 25 m-scw-0824-0813 mf30060bbj6 screw f3.0*6-b(ni)gp 5 26 m-scw-0824-0726 mf30080bbj5 screw f3.0*8l,b,ni gp 4 27 m-scw-0824-6799 mm35080bbw2 screw m3.5*8-b (ni,washer)gp 1 28 m-ms-0808-8986 mbli1004018 io nut li1(mbli1004,rev3a)gp 4 29 n/a gal5t002012 rubber-holder l5tl-n(gal5t002,rev3b)gp 4 30 pl-00001806 gal5t001016 rubber-holder l5tl-e(gal5t001,rev3b)gp 2 31 cb-00002525 dd0l9vlc015 cable mb-lcd(30p,140mm)l9v-5 gp 1 32 cb-00004152 dd0l9vlc023 cable lvds(30p,140mm,linktec,au)l9va gp 1 33 cb-00005371 dd0w0eth002 cable mb-button(10p/8p,240mm)w0e gp 1 34 e-00005213 dn0te230f06 speaker assy l9vdq fg-te230 gp 1 35 n/a fcl9v005015 al foil l9vdq-4(fcl9v005,r3a)100*80 gp 1 36 n/a fcm7t004014 al foil m7t(fcm7t004,rev3a) gp 3 37 n/a fcl7g001016 al foil l7g(fcl7g001,rev3a)han gp 1 38 m-ms-0808-9248 fcl7a001014 al foil l7a(fcl7a001,rev3a) gp 1 39 n/a fcl9za01019 mylar l9za(fcl9za01,rev3a)gp 2 40 n/a fcl7c004011 panel mylar left l7c(fcl7c004,rev3a)gp 2 41 n/a gal7ta02012 rubber-10*20*6.8 l7ta(gal7ta02,r3a)gp 2 42 n/a 25l9v0lc007 l9vdq-4 lcd cover assy gp 1 43 c-00005376 35l9v0ls009 l9vdq-4 lcd cover sub assy gp 1 44 n/a eal9v008012 lcd cover l9vdq-4(eal9v008,rev3b) gp 1 45 m-ms-0808-9253 fel7v005011 logo plate ellipse l7vc(rev3a)gp 1 46 m-ms-0808-9411 fbl70008014 lock metal l70b(fbl70008,rev3a) gp 1 47 n/a fal9v003011 hinge bkt l9vdq-4(fal9v003,rev3a) gp 1 48 m-scw-0824-6895 mf40080ibj1 screw f4.0*8-i(ni)gp 4 49 n/a 26l9v0sa008 l9vdq-4 stand assy gp 1 50 c-00005372 37l9v0su002 l9vdq-4 stand sub assy gp 1 51 n/a fal9v006010 stand base l9vdq-4(fal9v006,rev3a) gp 1 52 n/a fal9v005013 hinge l9vdq-4(fal9v005,rev3a) gp 1 53 c-bs-0303-0553 eal9v004017 stand base l9v(eal9v004,rev3a)gp 1 54 m-cv-0830-2589 eal9v005013 stand bkt cover l9v(eal9v005,rev3a)gp 1 55 m-ms-0808-9811 gal5m002011 rubber foot l5m(gal5m002,rev3b)gp 4 56 n/a mm40060bci6 screw m4.0* 6-b(ni,nylok) gp 4 57 m-scw-0824-0813 mf30060bbj6 screw f3.0*6-b(ni)gp 11 58 n/a fcl9v004019 stand eva l9vdq-4(fcl9v004,rev3a) gp 2 59 m-ms-0808-9812 ebl9v001019 stand cover f l9v(ebl9v001,rev3a)gp 1 60 n/a 2al9v0ptu08 l9vd-h(VX912-4) panel kit assy(hsd) gp 1 61 e-00005370 aa90me130f5 lcd(tft)19" hsd190me13-d10 5ms gp 1 62 n/a azl9vdbu006 l9vd-h(VX912-4) sw bios image 2523(hsd) 1 63 hw-00001807 fbl9v009010 lcd bkt l-r l9vd-1(fbl9v009,rev3b)gp 2 64 m-scw-0824-6800 mm30060ibj8 screw m3.0*6.0-i(ni) gp 4 65 n/a 27l9v0cs014 l9vdq-1a chassis assy gp 1 66 hw-00005216 3fl9v0hs002 l9vdq-4 hinge cover sub assy gp 1 67 c-00001778 ebl9v002015 stand cover r l9v(ebl9v002,rev3a)gp 1 68 m-cv-0830-2593 ebl9v003011 i/o cover l9v(ebl9v003,rev3b)gp 1 69 m-ms-0808-9815 gal9v002014 rubber plug vesa l9v(gal9v002,rev3a)gp 4 70 m-scw-0824-6859 mm40060il69 screw m4*6-i (bni)(nylok))gp 4 71 m-scw-0824-0795 mm40080bci5 screw m4.0*8-b(ni,nylok)gp 4 72 m-scw-0824-6894 mf30060bj28 screw f3.0*6-b(bni)gp 2 73 n/a 28l9v0pk0a1 l9vd-h packing assy(VX912-4) gp 1 74 cb-00002602 ddl7vdpc005 cable mb-vga (15/15p,1.8m)l7vd gp 1 75 cb-00003440 dd0l0tth108 cable dvi l0t black 1800(24p) gp 1 76 cb-00005211 ddw9zapa009 cable audio(st,1.8m)black w9za gp 1 77 pl-00005198 jxlm5003011 handle lm5s(jxlm5003,rev 3b) gp 1 78 p-fm-0602-0897 hbl9v002015 end cap-r l9v(hbl9v002,rev3a)gp 1 79 p-fm-0602-0896 hbl9v001019 end cap-l l9v(hbl9v001,rev3a)gp 1 80 m-ms-0808-9817 hal9v002014 epe bag l9vd(hal9v002,rev3a)gp 1 81 m-lb-0813-0747 hcl7v004013 core label(hcl7v004,rev3a)gp 1 82 n/a hcl9v014014 id label vx912 l9vdq-1a(hcl9v014,r3a)gp 1 83 m-lb-0813-0745 hcl7v002011 serial lebal l7v(hcl7v002,rev3a) gp 1 84 p-00001432 hfl9v005018 carton vx912 l9vd(hfl9v005,rev3a)gp 1 85 dc-00005433 hgl9v023017 cd+qsg(VX912-4) l9vd-h(hgl9v023,r3a)gp 1 86 m-ms-0808-9682 jxl9v001010 lcd film l9v(jxl9v001,rev3a) gp 1 87 m-lb-0813-1043 hcl70021011 hi-pot label l70l(hcl70021,rev3a)gp 1 88 n/a hfl9v002019 space plate l9v(hfl9v002,rev3a)gp 0.05 89 dc-00005434 hcl9v022017 5ms VX912-4 l9vd-h(hcl9v022,rev3a) gp 1 90 n/a hcl5vc02019 rohs label(w) 27*27 l5vc(hcl5vc02,r3a)gp 1 91 n/a hcl9va02011 carton label(4) l9va(hcl9va02,r3a) gp 1 92 n/a hdl7vc02015 (b)17-19"serv.paper l7vc(hdl7vc02,r3a)gp 1 93 a-pc-0106-0224 dm333181g97 power cord sp-30+is-14 3p 1.8m(usa)b gp 1 bom list (VX912-4) viewsonic corporation confidential - do not copy VX912-4 46 8. exploded diagram and exploded parts list viewsonic corporation confidential - do not copy VX912-4 47 viewsonic model number: vs10162 rev: 1a serial no. prefix: q8d item viewsonic p/n ref. p/n description q'ty 1 n/a eal9v009019 bezel l9v 1 2 n/a eal9v006010 middle bezel l9v 1 3 n/a ebl9v004018 control button 1 4 m-ms-0808-9243 fel7v003019 logo front-vsc-38cm l7vc(fel7v003,rev3a) 1 5 m-ms-0808-9401 ebl7v028019 lens l7vd(ebl7v028,rev3a) 1 6 m-ms-0808-9402 fel7v007014 bird logo l7vd(fel7v007,rev3a) 1 7 n/a 23l7vdbb006 button/b assy 1 8 n/a fbl9v011014 lcd panel lock metal l9v 2 9 m-scw-0824-0726 mf30080bbj5 screw f3.0*8l,b,ni 2 10 e-00005370 aa90me130f5 lcd(tft)19" hsd190me13-d10 5ms gp 1 11 hw-00001807 fbl9v009010 lcd bkt l9v(fbl9v004,rev3a) 2 12 m-scw-0824-6802 mm30040ibj9 screw m3.0*4.0-i(ni) gp 4 13 m-bk-0805-0079 fal7v014017 pcb bkt l7vd(fal7v014,rev3a) 1 14 cb-00002525 dd0l9vlc015 cable mb-lcdl9v-5 gp 1 15 b-00003993 as05b312d00 adp/inv,fsp043-2pi01 90~264v gp 1 16 b-00004169 21l9tamb090 l9ta m/b assy(rtd2523-lf) gp 1 17 cb-00005371 dd0w0eth002 cable assy l7vd button-mb (8p-10p) 1 18 m-scw-0824-6799 mm35080bbw2 screw m3.5*8-b (ni,washer) 1 19 m-scw-0824-6800 mm30060ibj8 screw m3.0*6.0-i(ni) 7 20 m-ms-0808-9405 fal7v015013 pcb shielding l7vd(fal7v015,rev3a) 1 21 hw-00000989 mm30040ibj8 screw m3.0*4.0-i(ni) 10 22 m-ms-0808-9811 gal5m002011 rubber foot l5m(gal5m002,rev3b) 4 23 m-scw-0824-0813 mf30060bbj6 screw f3.0*6-b(ni) 1 24 m-cv-0830-2589 eal9v005013 stand bkt cover l9v(eal9v005,rev3a) 1 25 m-ms-0808-9812 ebl9v001019 stand cover f l9v(ebl9v001,rev3a) 1 26 m-bk-0805-0110 fbl9v005014 stand bkt l9v(fbl9v005,rev3a) 4 27 c-bs-0303-0553 eal9v004017 stand base l9v(eal9v004,rev3a) 1 28 m-ms-0808-9813 fbl9v006011 stand plate l9v(fbl9v006,rev3a) 1 29 m-scw-0824-6859 mm40060il69 screw m4*6-i (bni)(nylok)) 4 30 m-scw-0824-6894 mf30060bj28 screw f3.0*6-b(bni) 4 31 m-ms-0808-9404 ebl7v029015 wire clamp l7vd(ebl7v029,rev3a) 2 32 c-00001778 ebl9v002015 stand cover r l9v(ebl9v002,rev3a) 1 33 m-scw-0824-6895 mf40080ibj1 screw f4.0*8-i(ni) 8 34 m-bk-0805-0111 fbl9v002015 hnge-bkt l9v(fbl9v002,rev3a) 1 35 m-cv-0830-2590 fbl9v001019 hinge-l l9v(fbl9v001,rev3a) 1 36 m-cv-0830-2591 fbl9v003011 hinge-r l9v(fbl9v003,rev3a) 1 37 m-ms-0808-9411 fbl70008014 lock metal l70b(fbl70008,rev3a) 1 38 n/a eal9v008012 lcd cover l9v(eal9v008,rev3a) 1 39 m-scw-0824-6859 mm40060il69 screw m4.0x6 (bni)nylock 6 40 m-cv-0830-2593 ebl9v003011 i/o cover l9v(ebl9v003,rev3a) 1 41 m-ms-0808-9253 fel7v005011 logo plate 1 42 m-scw-0824-0870 ms40070b808 screw m4.0x7 (bmc)nylock 4 43 m-ms-0808-9815 gal9v002014 rubber plug vesa l9v 4 44 pl-00001804 gal70002015 rubber holder 2 45 pl-00001805 gal70005014 rubber bkt 2 46 pl-00001806 gal5t001016 rubber holder 4 exploded parts list (VX912-4) viewsonic corporation confidential - do not copy VX912-4 48 viewsonic corporation confidential - do not copy VX912-4 49 viewsonic model number: vs10162 rev: 1a item viewsonic p/n ref. p/n location q'ty 1 n/a 1l9vzhxvs40 VX912-4 unit 1 2 p-fm-0602-0896 hbl9v001019 end cap(l) 1 3 p-fm-0602-0897 hbl9v002015 end cap(r) 1 4 dc-00005433 hgl9v023017 cd+qsg(VX912-4) 1 5 a-pc-0106-0227 dm333181801 power cord 3p 1.8m 1 6 p-00001432 hfl9v005018 carton vx912 1 7 m-lb-0813-1042 hcl7v019011 carton label 1 8 m-ms-0808-9817 hal9v002014 epe bag 1 packing part list (VX912-4) viewsonic corporation confidential - do not copy VX912-4 50 9. block diagram realtek rtd2523block diagram ddc-scl;ddc-sda aic1563 aic117adj aic1117adj 12v 5v 3.3v 2.5v power 12v analog rgb 19 ? panel backlight adaptor backight control inverter cpu mtv312v64 rst keypad scl scl sda sda brightness 5v switch si2301ds rtd2523 triple adc interface clock gen. host interface panel interface eeprom 24c16 crystal 24.576mhz irq ar ag ab hsync ,vsync on/off csz ddc 24c02 dvi lvds+ lvds- clk+ clk- panel inverter control isp 12v crystal 11.059mhz m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n block diagram 10. schematic diagrams viewsonic corporation confidential - do not copy VX912-4 51 +3.3v audio_mute +12v aic1739 rsds and lvds +2.5v power pc vga lcdvcc +3.3v +3.3v +2.5v lcdpwr_on12v invctrl +12v eeprom 24lc16 scalar rt d2523 lcd panel(17 19 rsds and lvds) ac 90-264v brightness analog rgb lcdpwr_on3.3v ddc micro-contr oller mtv312 +5.0v dvi aic 1563 power inverter and audio board +3.3v audio_volume +3.3v aic1739 +3.3v m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n vga and tmds input viewsonic corporation confidential - do not copy VX912-4 52 page1 vga input add r156~r162 damping res 2004/4/16 pin 10 vga_con del l11,c32,u6,r51,r52 2004/6/17 add d34,d35,l31 2004/6/17 del d29 2004/6/17 blue+in blue+in green+in in-v in-h ddc2_scl blue+in blue+in in-v dsub_5v red+in in-h red+in ddc2_sda red+in vgavs ddc_scl in-v green+in red+in bus_power bus_power in-v green+in green+in vgahs in-h ddc_sda ddc_scl dsub_5v ddc_scl ddc_sda ddc_sda in-h ddc2_scl ddc2_sda gnd red-in blue-in gnd green-in red-in green-in blue-in red-in green-in blue-in blue- sogin blue+ green- hot_plug ddc_scl green+ ddc_sda red- red+ txc+ tx2- tx0+ tx1+ tx1- tx2+ tx0- txc- dsub_5v avs ahs 3dvcc adc_vcc c17 nc r47 100/6/nc r32 75/6/f c21 0.047u/6 r35 2k/6 d34 z3.3v 1 3 r29 100/6 d35 z3.3v 1 3 c29 0.1u/6/nc c23 0.047u/6 c22 0.047u/6 d20 z5.6/nc 1 3 l10 0/6 r49 100/6nc d27 z5.6/nc 1 3 c26 22p/6 r34 100/6 c18 0.047u/6 c30 0.1u/6/nc d9 dan217k/nc 2 1 3 r31 100/6 d24 z5.6/nc 1 3 r33 100/6 l9 0/6 d28 z5.6/nc 1 3 r45 2k/6/nc r46 100/6/nc c19 0.047u/6 r50 10k/6nc r26 100/6 l8 0/6 c31 1u/6nc cn4 dvi-d/nc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 rx2- rx2+ gnd rx4- rx4+ scl sda vs rx1- rx1+ gnd rx3- rx3+ 5v gnd hp rx0- rx0+ gnd rx5- rx5+ gnd rxc+ rxc- 26 25 d25 z5.6/nc 1 3 c16 0.047u/6 c24 nc c28 22p/6 d18 z5.6/nc 1 3 r155 0 r28 100/6 d22 z5.6/nc 1 3 r156 0 r27 75/6/f cn2 vga/nc 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 16 17 r157 0 d10 z5.6/nc 1 3 r158 0 c20 nc cn3 vga input 1 3 5 7 9 11 13 2 4 6 8 10 12 14 + + + + + + + + + + + + + + r159 0 r160 0 d11 z5.6/nc 1 3 r48 10k/6nc r161 0 d8 dan217k/nc 2 1 3 r162 0 r36 100/6 d23 z5.6/nc 1 3 d12 z5.6/nc 1 3 l31 0/6 r30 1m/6 r37 2k/6 d13 z5.6/nc 1 3 d17 bat54c-gs08/nc d19 z5.6/nc 1 3 r23 100/6 r24 75/6/f r25 100/6 d7 dan217k/nc 2 1 3 r44 2k/6/nc d21 z5.6/nc 1 3 u5 m24c02/nc 1 2 3 4 5 6 7 8 nc nc nc vss sda sck vclk vcc c25 0.047u/6 d26 z5.6/nc 1 3 m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n mcu/ botton control viewsonic corporation confidential - do not copy VX912-4 53 u7 c43.c44.c45 ic o?q?aa? near to chip ahs avs xo rx2p rx1p rx1n rx0p rxcp rxoin1- rxeckin- rxein3+ rxein0+ rxoin0+ rxeckin+ rxein2+ rxoin0- rxoin1+ rxein1- rxein3- rxein2- rxein0- rxein1+ rxoin2+ rxoin3- rxockin- rxoin3+ rxoin2- rxockin+ ag2p ar3n ar1p ar2p ar3p ag1n ar1n ar2n bg3n bclkp bb1n bb1p bb2n bb3n bb3p bg3p bclkn bb2p ag1p ag2n tcon5 tcon8 tcon10 xo xi xi tcon5 fxdio tcon6 xstb tcon7 pol tcon8 bxdio tcon9 yclk tcon10 ydio tcon11 yoe tcon7 tcon9 tcon11 tcon6 r- sog b- b+ g+ g- r+ rx2n rx0n rxcn pll_gnd adc_gnd ahs avs 3avcc1 rtd_scsb 2.5dvcc 3avcc2 3pvcc reset vbri rtd_sclk rtd_sdo/sdi sdio1 sdio2 sdio3 volume ddc_scl ddc_sda blue+ blue- green- green+ sogin red- red+ txc+ txc- tx2+ tx2- tx1+ tx1- tx0+ tx0- 2.5dvcc 3pvcc r2.5dvcc r3dvcc tmds_avcc adc_vcc 3avcc1 3avcc2 tmds_avcc 3dvcc + c59 22uf/16v c37 0.1u/6 c63 0.1u/6 c39 0.1u/6 r56 1k/6 22/6 r60 l12 feb_0805 + c53 22uf/16v c49 0.1u/6 l19 feb_0805 c45 0.1u/6 22/6 r61 c57 0.1u/6 c61 0.1u/6 l14 feb_0805 nc r72 c46 10uf/16v l15 feb_0805 22/6 r62 c50 10uf/16v c42 0.1u/6 c62 0.1u/6 c33 22pf/6 22/6 r63 c56 0.1u/6 l13 feb_0805 c54 0.1u/6 c48 22pf/6 22/6 r64 c34 10uf/16v c60 0.1u/6 c52 0.1u/6 r66 100/6 rtd2523 108 128 54 50 111 56 42 43 124 9 10 11 12 13 14 15 123 118 40 29 30 31 33 35 37 27 38 41 39 28 32 6 7 1 2 4 3 5 8 114 115 116 117 119 122 47 126 125 109 120 69 71 121 49 72 57 58 26 97 83 95 96 84 98 113 110 112 127 25 24 21 22 23 20 19 18 17 16 78 79 80 81 82 85 86 87 88 89 90 106 107 91 51 52 53 55 59 60 61 62 63 64 65 66 67 68 73 74 75 76 77 104 93 102 103 101 100 94 99 92 36 34 105 46 44 45 70 48 ar1n 2.5v ground sdio[0] sclk scsb reset# ahs avs tcon[0]/vclk tmds_tst/pwm1 tmds_gnd tmds_vdd ext_res tmds_vdd rx2p rx2n tcon[1]/v[7] tcon[7]/v[4] adc_gnd adc_vdd b+ b- sog/adc_test g- r+ adc_gnd r- adc_vdd adc_gnd adc_refio adc_gnd pll_test1 pll_test2 xo xi dpll_vdd dpll_gnd apll_vdd apll_gnd tcon[11]/v[0] tcon[10]/v[1] tcon[9]/v[2] tcon[8]/v[3] tcon[6]/v[5] tcon[5]/v[6] ddcsda ddcscl2 ddcsda2 3.3v ground 3.3v ground 2.5v power 3.3v power 3.3v power 3.3v power 3.3v ground 3.3v ground 3.3v power tmds_vdd 2.5v ground 3.3v power 3.3v power 3.3v ground 3.3v ground 2.5v power tcon[12]/cout/pwm2 3.3v power pwm0/refclk 2.5v power tmds_gnd rxcn rx0n tmds_gnd rxcp rx0p tmds_vdd rx1n rx1p tmds_gnd br3n/tocn br2p/tobp br2n/tobn br1p/toap br1n/toan ab3p/tedp ab3n/tedn ab2p/teclkp ab2n/teclkn ab1p/tecp ab1n/tecn ar2n/tcon[1] ar1p/tcon[0] aclkp/tebp tcon[2]/sdio[3]/pwm2 tcon[3]/sdio2] tcon[4]/sdio[1] tcon[13]/cout/pwm2 bb3p bb3n bb2p bb2n bb1p bb1n bclkp bclkn bg3p bg3n bg2p/todp bg2n/todn bg1p/toclkp bg1n/toclkn br3p/tocp ar3n/tcon[6] ag3p/teap ag1n/tcon[8] ar3p/tcon[7] ag1p/tcon[9] ag2n/tcon[10] ag3n/tean ag2p/tcon[11] aclkn/tebn adc_vdd g+ ar2p/tcon[5] ddcscl 2.5v ground 2.5v power 2.5v ground 3.3v ground c55 0.1u/6 22/6 r65 r53 nc y1 24.576mhz c58 0.1u/6 c51 0.1u/6 c44 0.1u/6 r54 4.7k/6 r57 nc r55 4.7k/6/nc tp2 test point 1 c40 0.1u/6 c47 0.1u/6 c43 0.1u/6 c41 0.1u/6 ncr71 c38 0.1u/6 c64 0.1u/6 r58 4.7k/6 c35 0.1u/6 c36 0.1u/6 22/6 r59 m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n scalar rtd2523 viewsonic corporation confidential - do not copy VX912-4 54 parameter eeprom b c to button board junction from a change to b r101,r103 net swap less r94 to cn6 pin 11 e 2.0mm pitch 90 e&t 4607-11pin reset circuit add q20,r165,r166,c103,d32,d33 2004/6/16 led_r led_r led_g iicscl iicsda txd rxd left menu up right sel pwr pwr left up right menu down sel down pwr_sel led_g reset ddc_sda ddc_scl avs panel_pw12 hot_plug stby mute sdio1 sdio2 rtd_scsb rtd_sdo/sdi sdio3 rtd_sclk vrmt panel_pw3 5dvcc 3avcc1 vcpu vcpu vcpu vcpu vcc12 vcpu vcpu 3dvcc vcpu 3dvcc vcpu vcpu 3avcc1 r78 10k/6 r120 nc r125 100/6 r108 4.7k/6 r109 4.7k/6 r98 1k/6 r38 2k/6 r92 100/6 r99 1k/6 c77 0.1u/6 r88 33k/6 r85 33k/6 q13 2n3906 2 1 3 r113 nc r83 100/6 r82 4.7k/6 cn6 4501-10-10p-r 1 2 3 4 5 6 7 8 9 10 + c84 22uf/16v r39 4.7k/6 r87 33k/6 r80 2k/6 r40 4.7k/6 r115 4.7k/6 r81 2k/6 r100 1k/6 r89 33k/6 r165 nc/100k/6 u8 24lc16 1 2 3 4 5 6 7 8 a0 a1 a2 vss si sck wp vcc q12 2n3906 2 1 3 r101 1k/6 r90 33k/6 c103 nc/1u/16v r102 220/6 r91 33k/6 d32 nc/ 1n4148 r114 4.7k/6 r103 220/6 r110 4.7k/6 r106 nc/82k/6 c76 0.1u/6 r112 nc c85 0.1u/6 c75 0.1u/6 1 2 c81 0.1u/6 y2 11.0592mhz c82 0.1u/6 r96 1k/6 r111 4.7k/6 d33 nc/dan202u 3 2 1 r95 1k/6 r116 4.7k/6 r142 nc r41 6.8k/6 c88 10pf/6 r147 4.7k/6 c86 nc/1u/16v c87 10pf/6 r164 22 r163 4.7k/6 jp1 header 4 1 2 3 4 i1 mtv312m64 12 11 7 19 17 18 20 21 22 23 24 25 3 2 1 42 41 40 33 32 31 30 9 26 27 28 29 8 10 14 13 4 38 39 5 6 16 15 34 35 36 37 43 44 x1 x2 reset int0/p3.2 p1.0 p1.1 p1.2 p1.3 p1.4 p1.5 p1.6 p1.7 p5.0 p5.1 p5.2 p5.3 p5.4 p5.5 p6.7 p6.6 p6.5 p6.4 p6.3 p6.1/ad1 p6.0/ad0 p3.1/txd p3.0/rxd vcc vss iscl/p3.5/t1 isda/p3.4/t0 vdd3 da9/halfv da8/hlfho nc nc p6.2 p4.2 p5.6 da7 p4.0 p4.1 hsync vsync r84 33k/6 c78 0.1u/6 r166 0/6 c79 0.1u/6 c80 0.1u/6 q20 nc/2n3906 2 1 3 r93 4.7k/6 r97 1k/6 r79 10k/6 r124 100/6 m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n panel interface viewsonic corporation confidential - do not copy VX912-4 55 d g 3 1s 2 c 3 1 e 2 b if panel is 3.3v lvds if, l30 must add the part 2004/4/14 fxdio bb2p rxein2- rxockin+ ag1n bxdio ag2p bclkp ar2n bg3p rxoin2- rxoin1- rxein0- rxockin- yclk rxeckin+ ydio yoe rxeckin- rxoin1+ ar3n bclkn rxoin0+ bb1p ar1p rxoin3+ ag1p rxein0+ bb2n ar3p rxein2+ xstb rxoin0- rxein3+ rxein1+ bb1n rxein3- bb3n bg3n rxoin2+ ag2n pol ar2p rxein1- bb3p rxoin3- ar1n rxein3+ dgnd panel_5_12vcc dgnd rxein1+ rxoin0- rxein0- rxoin2- dgnd rxoin2+ rxoin3+ rxockin- rxeckin+ rxein1- rxoin1- dgnd rxockin+ panel_5_12vcc rxein0+ dgnd dgnd panel_5_12vcc rxeckin- rxoin1+ rxein2+ panel_3vcc rxoin3- rxein3- panel_5_12vcc rxein2- rxoin0+ panel_5_12vcc panel_pw12 5dvcc panel_pw3 panel_3vcc panel_3vcc panel_5_12vcc vcc12 gnd panel_5_12vcc 5dvcc panel_3vcc 3dvcc c68 2200p/6 l22 feb_1206 c70 100u/16v q8 si2301ds 3 1 2 c69 0.1u/6 r70 82k/6 c67 2200p/6 l21 nc r68 10k/6 q9 dtc144eua 2 3 1 r67 82k/6 c74 nc/100u/16v q11 nc/dtc144eua 2 3 1 r75 nc/82k/6 c73 nc/0.1u/6 r77 nc/10k/6 c72 nc/2200p/6 c71 nc/2200p/6 r76 nc/10k/6 q10 nc/si2301ds 3 1 2 l17 feb_0805/nc l18 feb_0805/nc j1 rsds_con30 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 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 c66 0.1u/6/nc c65 0.1u/6/nc j2 rsds_con50/nc 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 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 l20 feb_0805/nc l16 feb_0805/nv cn5 1841 30p 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 l30 nc/feb_1206 m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n audio viewsonic corporation confidential - do not copy VX912-4 56 speaker out pc audio-in 12 3 b c e l_line z0412 spkoutl spkoutr vol stby z0416 mute lin_pc z0415 r_line vol rin_pc stby mute volume agnd vcc12 agnd agnd agnd vcc12 vcc12 vcc12 agnd agnd agnd agnd agnd l26 600/cx601t02001/nc 1 2 r128 1k/6/nc c90 0.1u/6/nc r138 10k/6/nc q15 sn7002e/nc 3 2 1 r133 100/6/nc u9 tda7496l/nc 4 9 5 6 7 17 14 12 11 10 13 15 16 1 2 3 19 20 18 inl inr varout_l volume varour_r outl outr mute stby svr gnd vs vs gnd gnd gnd gnd gnd gnd c92 0.47u/8/nc c95 220p/6/nc r139 10k/6/nc r141 10k/6/nc l25 600/cx601t02001/nc 1 2 c97 330u/16v/nc c89 1u/8/nc r140 10k/6/nc c91 330u/16v c96 220p/6/nc c98 0.1u/8/nc r130 10k/6/nc jp2 4606-04-04p-r/nc 1 2 3 4 r134 cx201209805/8/nc c99 330u/16v r132 100/6/nc q16 dtc144eua/nc 2 3 1 l24 bead/1206/nc c93 330u/16v/nc q17 dtc143eua/nc 2 3 1 l23 bead/1206/nc r136 20k/6/nc r137 cx201209805/8/nc r129 10k/6/nc r1313.9k/6/nc r135 20k/6/nc c94 0.47u/8/nc j3 zd005d100/nc 2 3 4 5 1 m o d e l t i t l e d a t e r e v : v i e w s o n i c c o r p o r a t i o n power viewsonic corporation confidential - do not copy VX912-4 57 3 e c 12 modify adc_ 3avcc lvds_3avcc rtd 2.5dvcc rtd 3dvcc rtd 3pvcc rtd 2.5dvcc adc_ 3avcc lvds_3avcc rtd 3dvcc rtd 3pvcc 3.3v-->2.5v regulator for 3.3v system power, no 5v 2004/4/14 r11:3k 1% ohm, r12:1k 1% ohm -->output:5v; r11:3.6k 1% ohm, r12:2.2k 1% ohm-->output 3.3v u10 u3 layout ?p|@ 2004/4/16 r1,l1 3dvcc 3avcc2 5dvcc 3dvcc 3avcc1 3pvcc 2.5dvcc vbri vrmt 3avcc1 3pvcc 3avcc2 3dvcc 2.5dvcc dsub_5v vcpu 3dvcc gnd gnd 2.5dvcc gnd gnd gnd gnd 3dvcc gnd 5dvcc dgnd 3dvcc 12v vcc12 3dvcc gnd 3dvcc 2.5dvcc vcc12 l3 10k/6 1 2 c8 0.1u/6 r11 3k/6 1% q2 mmst3906 3 2 1 c2 1u/6 r14 10k/6/nc + ec1 10uf/16v r2 0/1206 u2 aic1563 1 2 3 4 5 6 7 8 dc de cf gnd fb vcc is boost c11 0.1u/6 r144 4.7k/6 q3 mmst3906 q4 sn7002e 3 2 1 c7 0.1u/6 c9 120p/6 ec4 330u/16v d3 rb081l-20 1 3 r6 330/6 1% d1 1ss355 r16 1k/6 c3 0.1u/6 c100 0.1u/6 r8 0/6 r9 1k/6 r4 47/6 u1 aic1117cy 3 1 2 vin gnd vout l28 cx201209805/8 c5 0.1u/6 c102 1u/6 r18 4.7k/6 l29 feb/1206/nc + ec3 10uf/16v r13 1k/6 + ec2 10uf/16v fuse1 0 1 2 u3 aic1117cy 3 1 2 vin gnd vout c4 0.1u/6 u10 aic1739/nc 3 1 2 vin vout gnd c12 0.1u/6 l2 47uh 1 2 + ec6 10uf/16v r15 200/6 1% + ec5 10uf/16v r17 200/6 1% c6 330u/16v r3 200/6 1% q19 mmbt3906 c101 nc/6 r143 4.7k/6 d2 1ss355 c10 2200p/6 q1 nds9410a/so 2 3 4 5 7 6 8 1 d31 1n4148 r5 330k/6 l27 nc/cx201209805/8 d30 1n4148 cn1 conn 4x2-r 4 5 6 1 2 3 8 q18 mmbt3906 r12 1k/6 1% r7 240k/6 1% c1 0.1u/6 r10 10k/6 c13 1u/8 viewsonic corporation confidential - do not copy VX912-4 58 1 1. pcb layout diagrams viewsonic corporation confidential - do not copy VX912-4 59 viewsonic corporation confidential - do not copy VX912-4 60 viewsonic corporation confidential - do not copy VX912-4 61 viewsonic corporation confidential - do not copy VX912-4 62 viewsonic corporation confidential - do not copy VX912-4 63 viewsonic corporation confidential - do not copy VX912-4 64 viewsonic corporation confidential - do not copy VX912-4 65 viewsonic corporation confidential - do not copy VX912-4 66 viewsonic corporation confidential - do not copy VX912-4 67 * reader?s response* dear readers: thank you in advance for your feedback on our servic e 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 cont ent 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. troubleshooting flow chart 7. recommended spare parts list 8. exploded diagram and exploded parts list 9. block diagrams 10. schematic diagrams 11.pcb layout diagrams b. are you satisfied with this service manual? item excellent good fair bad 1. service manual content 2. service manual layout 3. the form and listing c. do you have any other opinions or sugge stions regarding this service manual? reader?s basic dada: name: title: company: add: tel: fax: e-mail: after completing this form, please return it to view sonic quality assurance in the usa at facsimile 1-909-839-7943. you may also e-mail any suggestions to the director, quality systems & processes (marc.maupin@viewsonic.com) viewsonic corporation confidential - do not copy VX912-4 68 |
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