SERVICE MANUAL17" LCD Monitor 786LS THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS, MANUFACTURE DATA : Aug 28 2002 REVISE: Mar 17 2003 1 TABLE OF CONTENTS PAGE 1. SPECIFICATIONS .................................................................................................... 1-1 GENERAL SPECIFICATIONS ...................................................….............. 1-2 LCD MONITOR DESCRIPTION .................................................................. 1-3 INTERFACE CONNECTOR .................................................................……. 2. PRECAUTION AND NOTICES ................................................................................ 2-1 ASSEMBLY PRECAUTION ......................................................................... 2-2 OPERATIONG PRECAUTION ..................................................................... 2-3 STORAGE PRECAUTION …........................................................................ 2-4 HIGH VOLTAGE WARNING ....................................................................... OPERATING INSTRUCTIONS ................................................................................ ADJUSTMENT .......................................................................................................... 4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS ............................... 4-2 ADJUSTMENTS METHOD .& DESCRIPTION.....................…………….. 4-3 FRONT PANEL CONTROL KNOBS ............................................................ CIRCUIT & SOFTWARE DESCRIPTION .............,…………………………….... 5-1 SPECIAL FUNCTION WITH PRESS KEY ………………………………. 5-2 CIRCUIT FUNCTION DESCRIPTION………………………….……….. 5-3 SOFTWARE FLOW CHART……………………………………………… INTERFACE-BOARD TROUBLE-SHOOTING CHART .......…………..... INVERTER –MODULE SPEC &TROUBLE SHOOTING CHART………. 3 3 3 3 5 5 5 5 5 6 7 7 7-8 9 10 10 10-11 12 14-21 22-25 26 27-28 29 30 31-36 3. 4. 5. 6. A). B). 7. 8. 9. MECHANICAL OF CABINET FRONT DIS-ASSEMBLY...................................... SVC_BOM LISTING FOR LGE PART NO ………………………………............. POWER SYSTEM AND CONSUMPTION CURRENT............................................ 10. PCB LAYOUT .....................................................................………………………... 11. MAINBOARD SCHEMATIC DIAGRAM ….............................….......…......... 2 16. Languages. Display Color : 6-bit.6500K).40°C Humidity : Operating : 10% to 85% RH (non-condensing) Non Operating : 5% to 85%RH (38. Reset Input Video Signal : Analog-signal 0.5 Hz Input Power Source : Switching Mode Power Supply AC 100 – 240 V. Left key. Right key OSD menu Controls Contras . R/G/B. 10.264 mm 1280 x 1024 RGB vertical stripe arrangement 2. LCD-Panel : Active display area Pixel pitch Pixel format 17 inches diagonal 0. 4. DOS mode select. Color-(7200K. External Connection : 15Pin D-type Connector. Menu-key. 8.40°C Ambient Non-operating Temperature : 5°C .83 KHz Vertical: 55 Hz – 75 Hz Pixel clock: 135 MHz Factory Preset Timing : 17 User Timings : 13 Input signal tolerance : H tolerance ± 1 K. y-axis up/down = 45 . 6. Brightness.7Vpp Video signal termination impedance 75 OHM Scanning Frequencies : Horizontal: 30 KHz . 5. H/V-position . Auto Center. V tolerance ± 0. SPECIFICATIONS FOR LCD MONITOR 1-1 General specifications 1.264 mm x 0. Plug and Play : VESA DDC1/DDC2B 15.6 kg 11. AC power-Cord 12. Outside dimension : Width x Height x Thickness = 407x 434 x 173 mm 14. Focus.65 13. 7.2 million colors External Controls : Power On/Off. 9. View Angle : x-axis right/left = 70.7℃ maximum wet bulb temperature) 3. Auto key. Weight : 7.1. 50/60 Hz Universal Type Operating Temperature : 5°C . Clock . Power saving : VESA DPMS 3 . Inverter Flat Panel and CCFL backlight Main Board or Interface Board RS232 Connector For white balance adjustment in factory mode Keyboard AC-IN 100v-240v ADAPTER HOST Computer Video signal. an Inverter module. DDC 1-2 Interface Connectors (A) AC-Power Cable (B) Video Signal Connectors and Cable (C) External Adapter 4 .and Inverter module .16 Amp to Main-board. keyboard. Monitor Block Diagram CCFT Drive. The Adapter will provides the 12V DC-power 4. DDC and DC-DC conversion The Inverter module will drive the backlight of panel . brightness control logic. External Adapter which house the flat panel control logic.LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board. at Ta=25℃) 5 . 2-3 STORAGE PRECAUTIONS (1) When you store LCD for a long time. can cause a serious shock. Image might stick on LCD. 2-2 OPERATING PRECAUTIONS (1) Please be sure to unplug the power cord before remove the back-cover. And do not soil LCD panel surface by touching with bare hands ( Polarizer film. they are adjusted to the most suitable value. (2) Please do not leave the LCD in the environment of high humidity and high temperature such as 60℃ 90%RH. If they are changed. it might happen LUMINANCE does not satisfy the white balance spec. it is recommended to keep the temperature between 5℃-40℃ without the exposure of sunlight and to keep the humidity less than 85% RH. They might damage to cause panel surface variation and color change. and the lamp starting voltage was around 1650V. (the lamp voltage after stable around 600V. (be sure the power is turn-off) (2) Please do not change variable resistance settings in MAIN-BOARD. (4) Do not apply any strong mechanical shock to the LCD panel. (3) Please wipe out drops of adhesive like saliva and water in LCD panel surface immediately. below -15℃. 2-4 HIGH VOLTAGE WARNING The high voltage was only generated by INVERTER module. the following occurs : (a) Uniform color (b) Orientation of liquid crystal becomes disorder (2) Please wipe out LCD panel surface with absorbent cotton or soft cloth in case of it being soiled.5mA. if carelessly contacted the transformer on this module. PRECAUTIONS AND NOTICES 2-1 ASSEMBLY PRECAUTION (1) Please do not press or scratch LCD panel surface with anything hard. the gap between two glass plates is kept perfectly even to maintain display characteristic and reliability. (3) Please consider that LCD backlight takes longer time to become stable of radiation characteristic in low temperature than in room temperature. If this panel is subject to hard pressing. (4) Please pay attention to displaying the same pattern for very long-time. (3) Please do not leave the LCD in the environment of low temperature. with lamp current around 6. surface of LCD panel is easy to be flawed) In the LCD panel.2. 5. DESCRIPTION RED GREEN BLUE GND GND GND-R GND-G GND-B PIN NO. SYNC SCL Apply power to the display by turning the power switch to the "ON" position and allow about thirty seconds for Panel warm-up. or press auto-key to get the best picture-quality. Connect the 15-pin color display shielded signal cable to your signal system device and lock both screws on the connector to ensure firm grounding. 14. The connector information is as follow: 1 6 11 5 10 15 15 . Be sure to connect the signal cable to the PC. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the LCD monitor display. If the AC outlet in your location does not have provisions for the grounded type plug.3. a pattern or data should appear on the screen. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground. 1. 5. 6 . The Power-On indicator lights when the display is on. 10. adjust the brightness and contrast to the most pleasing display. 6. 9. 3. GND SDA HORIZ. 7. 13. This monitor has power saving function following the VESA DPMS. 12. 2. 1. 4. If your LCD monitor requires service. it must be returned with the power cord & Adapter. DESCRIPTION 5V power from VGA-card GND SYNC. SYNC VERT. Position the display on the desired operation and plug–in the power cord into External Adapter AC outlet. 11. 4.Pin Color Display Signal Cable PIN NO. 3. 6. 15. 2. the installer should attach the proper adapter to ensure a safe ground potential. 8. With proper signals feed to the display. User). ADJUSTMENT 4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS Adjustments should be undertaken only on following function : Contras . and the OSD screen will located at left top of panel. channel 2 to 6500 color. H/V-position . Phase. Languages. Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.please setting the Chroma-7120 MEM.4. Clock . Reset 4-2 ADJUSTMENT METHOD Press MENU button to activate OSD Menu or make a confirmation on desired function. y = 329 ±20. I.yY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust Press MENU button during 1 seconds along with plug in the DC-power cord will activate the factory mode. OSD-position.channel you can reference to chroma 7120 user guide or simple use “ SC” key and “ NEXT” key to modify x. y = 319 ±20. color (user )R. Black level. Channel 1 to 7200 color and MEM. Color-(7200. Auto level. Y = 200 ±20 cd/m2) How to setting MEM. 2.G. Languages.6500.B set to “50” adjust the brightness on OSD until chroma 7120 measurement reach the value Y=240 cd/m2 ±10 cd/m2 7 . Y = 200 ±20cd/m2 and 6500 parameter is x = 313 ±20. White-Balance. Brightness. Before started adjust white balance . 1. and wait for message “ Pass” Set the contrast on OSD window to the value=45 . 3. Press Left/Right button to select the function or done the adjustment. 1. ( our 7200 parameter is x = 302 ±20. Bias (Low luminance) adjustment : Press “ AUTO” button . y = 329 ±10. until chroma 7120 indicator reached the value B=100 repeat above procedure ( item 5. until chroma 7120 indicator reached the value G=100 Adjust the Color(user)Mode: BLUE on OSD window. 7. 6.channel to Channel 02 ( with up or down arrow on chroma 7120 ) The lcd-indicator on chroma 7120 will show x = 313 ±10. Y = 200 ±5 cd/m2 Adjust the Color(user)Mode: RED on OSD window.channel to Channel 01 ( with up or down arrow on chroma 7120 ) The lcd-indicator on chroma 7120 will show x = 302 ±10. until chroma 7120 indicator reached the value B=100 repeat above procedure ( item 5. a. 9. 2. 8. y = 319 ±10. Y = 200 ±5 cd/m2 Adjust the Color(user)Mode: RED on OSD window.II. Gain adjustment : adjust 7200 color-temperature Set the Contrast of OSD function to 45 and Adjust Brightness to chroma 7120 Y=240 ±5 cd/m2 Switch the chroma-7120 to RGB-mode (with press “MODE” button ) Switch the MEM. 1.7) until chroma 7120 RGB value meet the tolence =100±2 switch the chroma-7120 to xyY mode With press “MODE” button Press Color(6500) on OSD window to save the adjustment result Turn the POWER-button off to on to quit from factory mode ( in USER-mode. until chroma 7120 indicator reached the value R=100 Adjust the Color(user)Mode: GREEN on OSD window. 4. the OSD window location was placed at middle of screen) 8 . 1 2 3 4 5 6 7 8 9 10 adjust 6500 color-temperature Set the Contrast of OSD function to 45 and Adjust Brightness to chroma 7120 Y=240 ±5 cd/m2 Switch the chroma-7120 to RGB-mode (with press “MODE” button ) switch the MEM. 10. until chroma 7120 indicator reached the value G=100 Adjust the Color(user)Mode: BLUE on OSD window. until chroma 7120 indicator reached the value R=100 Adjust the Color(user)Mode: GREEN on OSD window. 3.6. 5.6.7) until chroma 7120 RGB value meet the torlence =100±2 switch the chroma-7120 to xyY mode With press “MODE” button Press Color (7800) on OSD window to save the adjustment result b. if that 2 functions failed. the access to the OSD is locked. Italian) Reset function Clear each old status of auto-configuration and re-do auto-configuration ( for all mode) This function also recall 7200 color-temperature .(this clock was called PIXEL-CLOCK) Focus adjustment Set the Chroma at pattern 63 (cross talk pattern) or WIN98/95 shut down mode (dot-pattern). 6. OSD-LOCK function Press Left & Right key during switching on the monitor.we only find this phenomena in crosstalk pattern or dot pattern . Clock adjustment Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shut-down mode (dot-pattern).(25. the H/V position will be failed too. If the relationship of pixel data and pixel clock not so match. 3. user only has access to “ Contrast. = 25. 4-3 FRONT PANEL CONTROL KNOBS Power button : Press to switch on or switch off the monitor.5KHz Pixel freq. the PLL of ADC will generate a clock which have same period with above Pixel freq. 7. press “MENU” to selected and confirm . we get the Divider number. but no affect the color-temperature Left/Right button : select function or do an adjustment. Adjust the four edge until all four-edges are visible at the edge of screen.175MHz) the accuracy of this clock will effect the size of screen. Brightness. Espanol. Auto-key “. 4. LANGUAGE function There have 5 language for selection. Deutch . This function is adjust the PLL divider of ADC to generate an accurate pixel clock Example : Hsyn = 31. Auto button : to perform the automatic adjustment from CLOCK. FOCUS. MENU button : to activate the OSD window or to confirm the desired function 9 . Francais. Adjust until the vertical-Stripe-shadow as wide as possible or no visible. 5. other pattern the affect is very light H/V-Position adjustment Set the Chroma to pattern 1 (crosshatch pattern) or WIN98/95 full-white pattern confirm above item 2 & 3 functions (clock & focus) was done well. the OSD is unlocked. H/V POSITION. if the monitor status was in “ Factory-mode” this reset function will clear Power-on counter ( backlight counter) too. x 1000)/Hsyn From this formula. if we fill this number in ADC register (divider register). press “ LEFT” or “ RIGHT” to change the kind of language ( English . we will see the horizontal interference on screen . Adjust the horizontal interference as less as possible This function is adjust the phase shift of PIXEL-CLOCK to acquire the right pixel data . If the operator pressed the Left & Right during switching on the monitor again .2.175MHz (from VESA spec) The Divider number is (N) = (Pixel freq. INPUT frequency out of range: H > 83kHz. U203. CIRCUIT-DESCRIPTION 5-1 SPECIAL FUNCTION WITH PRESS-KEY A).35 VPP . zooming.RT9164(Linear regulator 5V to 2.GMZAN2 ( all-in-one chip solution for ADC. in Factory mode we can do the White balance adjustment with RS232 In Factory mode. 2. U302. pixel-dot . CABLE NOT CONNECTED: Signal-cable not connected. Press both Left & Right button along with Power button off to on once will activate the OSD-LOCK function. White-balance data.AIC 1084-33CM (AIC brand linear regulator 5V to 3. press Menu button during 2 seconds along with plug-in the DC Power cord: That operation will set the monitor into “Factory.24LC21 (MicroChip IC) : EEPROM type. 3.LVDS signal is high frequency but low voltage.the frequency is seven times higher than TTL U401. 10 .LM2569S( NS brand switching regulator 12V to 5V with 3A load current) .mode”. perform overlay function and generate drive-timing for LCD-PANEL. U305. 4. OSD-index warning . 2. 74F14D(Schmitt triggger) The 74F14 contains six logic inverters which accept standard TTL input signals and provide standard TTL Output levels 9.5. INPUT frequency out of VESA-spec.MCU. the advantage of LVDS signal is : the wire can be lengthen and eliminate wire number . scalar and interpolation) : USE for computer graphics images to convert analog RGB data to digital data with interpolation process. for saving AUTO-config data.3V) 7. Press POWER-button off to on once will quit from factory mode and back to user-mode. low EMI . all OSD function will be lock . U905. (out of tolerance too far) 5-2 CIRCUIT FUNCTION DESCRIPTION 1.24C16 (ATMEL IC) : EEPROM type. U300. generated the OSD font . OSD. B). rs232-communication. 8. v < 55Hz b. power-consumption control. for saving DDC-CONTENT. only 0. 5. U200. …etc. detect change mode. type 8052 series with 64k Rom-size and 512 byte ram) : Use for calculate frequency. 1K ROM-SIZE.LVDS ( use NOVATEK NT7181F) Convert the TTL signal to LVDS signal .5V) U600. OSD-screen will locate in left top of screen. U304.89C51RD2 (PHILIPS. 16K ROM-SIZE. 6. INPUT NOT SUPPORT: a.U601. and Power-key status and Backlight-counter data. v > 75Hz or H < 28kHz. repeat this procedure will disable OSD-LOCK In OSD-LOCK function. except Contrast and Brightness OSD-INDEX EXPLANATION 1. PclkA/B.MODULE-TPYE COMPONENT: 1. ADAPTER : CONVERSION-module to convert AC 110V-240V to 12VDC.6mA-13mA Main-board Block diagram Input analog RGB & H.Hdata0 LVDS chip (U601. U602) PANEL Oscillator 50 mhz Panel Power 5V MCU ( U302 ) Crystal 20 MHz Panel-Power Control (U202) DC 12V 4. 5.& ddc signal & Rs232 communication GMZAN2 (U200) DDC-chip Data Digital RGB Panel Control Signal: Phs. with 4.Hfs.16Amp Keyboard module INVERTER module EXTERNAL-ADAPTER 11 .V. Pvs. with frequency 30K-80Khz.16 AMP INVERTER : CONVERSION-module to convert DC 12V to High-Voltage around 1650V. 2.Pdispe Communication signal: Hclk. POC (backlight counter) 2.5-3 SOFTWARE FLOW CHART I.press the MENU Button will be in FACTORY mode) No Clear factory mode flag MAIN-SUBROTINE LOOP 12 . & other system status Initial GMZAN2 Yes SET factory mode flag Check if in Factory mode?(when power-on. Power-On Subroutine CHART POWER-ON START Initial MCU I/O. Clr all mode value No Check White-balance data(6500 & 7200) same with the backup OK data ? Check POC( backlight counter) data same with the backup data ? IF not same. Check Previous power-switch status from Eeprom. overwrite the data with backup value. Interrupt vector & Ram Yes Check Eeprom is empty ? Initial 1. is change or not. set backlight status) No Check Auto-config mode flag already been set? Yes Read Key status and Process on OSD-screen Yes Check Factory mode flag= 1 No Monitoring the time-out of osd status ( if no key input persist for 10 sec .II. And check Signal cable status ( cable not connected or not ) ** IFM is the register which measured the HSYN & Vsyn status No Yes. setting GMZAN2according to above parameter. set LED status. process the command( while adjust white-balance in factory mode) . MAIN SUBROTINE LOOP Main loop start Process Power-saving status ( according to below flow-chart result) ) Check GMZAN2 IFM status . the osd time-out counter will trigger ) 13 Do Auto-config automatically if the RS232 buffer is full. IFM have change Is current system status in Power-saving ? No Check the IFM result is in the standard Mode table ? No Check the IFM result is in the user mode table ? No Out of range ( input not support) be confirm Yes Yes Wake-up GMZAN2 (because GMZAN2 was in partial sleeping state) Yes Set mode index & parameter Set change mode flag No confirm the frequency ( Hsyn or Vsyn) from IFM already been changed ? ( check the change mode flag) Yes . freq had been change Process ( turn off OSD . . if Replace “MAIN-BOARD” .r201. this trouble shooting is proceed with 640x480 @60Hz 31Khz I.6 A). there have OSD show Connected the Signal cable again.Is the screen show “Cable Not Connected” ? Yes. and Change the Resolution to 640x480 60 Hz / 31 KHz **NOTICE : The free-running freq. U200 data OK Replace Inverter and Check Inverter control relative circuit Re-do White balance adjust Replace U200 (Gmzan2) Replace U302 (MCU) & check Reset pin 10 must be change from High to low when first AC power plugin OK OK Note: 1. of our system is 48 KHz / 60 Hz. Led Green No.7. is it have transition? OK. Check the Wire-Harness from CN603 was tight enough?. INTERFACE-BOARD TROUBLE-SHOOTING CHART *Use the PC Win 98 white pattern. 2.Wire tight enough Measured Oscillator Block Oscillator U201 & Crystal X300 OK. no transition Check Correspondent component short/open ( Protection Diode ) and Signal cable bad ? Replace MCU Connected the Signal cable again. so we recommend to use another resolution to do trouble shooting. if Replace “ INVERTER” only.3V? Measured U904 LT1117 pin 2= 3. Please re-do “DDC-content” programmed & “WHITE-Balance”.was there have signal ? OK. Mcu have transition NG.4 . Check LED status.5v Check Correspondent component.Panel Power OK Check U200 Data-output Block OK. all DC level exist Disconnected the Signal cable( Loose the Signal cable ).V Input at U401 pin 9 . nothing is show Led Orange Check Power switch is in Power-on status . Keyboard no stuck Led Green NG Measured RGB (r200. NO SCREEN APPEAR DC-Power Part Measured Input DC-voltage ( J1)= 12 V? Measured U305 AIC 1084 pin 2 = 3. Please re-do “ WHITE-Balance” 14 . Check LED status. with some icon on it. Is there any shortage or cold solder? Yes.input Normal OK.clock normal Check communication pin between U200 & MCU pin 2.3V? Measured U905 RT9164 pin 2=2.6. check the Wire connection to panel side too Check Panel-Power Circuit Block OK. and check if Power switch had been stuck ? Led orange OK.r202) H. 7..74.R225 have response NG. no Voltage NG Check the PPWR panel power relative circuit.) Check JP202 shortage INVERTER Control Relative Circuit Measured the inveter connector CN303 Pin 1.2=12V.6.R224.no transition Measured U201 Oscillator output R215= 50MhZ ? Replace Oscillator U201 NG.PANEL-POWER CIRCUIT check R225 should have response from 0V to 5V When we switch the power switch from on to off OK.8= 5 V? OK OK Replace U202 ( Nmos. and Check the screen is normal ?? OK. If Bklt-On no-response when the power switch turn on-off. R223 should =0 v.no transition Replace Crystal X300 OK.L906.7. pin 3 on/off control=5V (on) YES. PVS=60. R315. still no screen NG Check the Bklt-On relative circuit. R223. If PPWR no-response when the power switch Turn on and turn off. Replace the MCU NG Replace INVERTER to new-one.43 from U200 ) Is there have any transition? Pclk around 47MHz to 57MHZ . and LED is green) NG . In normal operation.PDISPE (pin 73. R315 Bklt-On should =0 v.(D300. replace the U200-GMZAN2 Yes Check U202 pin 1. SI9953) NG Check U304 relative circuit. when LED =green. please do the DDC – content reprogrammed OK 15 . PHS around 67 KHz ??(refer to input signal=640x480@60 Hz 31k. If Main Board being replace . Q200.U202(pin 5. no transition Replace GMZAN2 (U200) or replace MAINBOARD. when LED =green.09Hz .6. has transition Measured X300 Crystal output R340= 20MhZ ? OK U200-DATA OUTPUT Measured PCLK(L207. R311. Q304.R603) PVS.& Re-do white balance OSCILLATOR BLOCK NG.PHS.8) In normal operation.3= 5V Measured the U202 pin 5. 6. Yes.3V ? Yes.L603.which convert the 5V to 3. still no data out Replace U200 GMZAN2 16 . tight enough Check the Panel-Power circuit as above (page 16) U202 pin 5. Frequency normal Replace both LVDS chip ( U601 & U602) Check OSCILLATOR Block as above ( page 16) OK. Voltage normal NG Check the both U601 & U602 LVDS-Input pin 31= 45mhz – 65mhz.L900= 3. pin 28 = 45khz. stuck at white screen. At general. so we must check our wire-harness which connected to panel or the panel power controller (U202) NG Check if the Wire harness from CN603 loose? Check the wire on both Panel-side and Main board side. OSD window can’t appear. and pin 27 = Vsyn freq.must be 5V Tighten it. all clock is normal Check U200 DATA-OUPUT block as above ( page 16) Check U904. no data output Replace U302 MCU and check it RESET pin 10 . this symptom is cause by missing panel data or panel power. but keyboard & LED was normal operation.65 khz Yes. Yes. Voltage normal NG Check the LVDS-Power L601.L604.II (a) THE SCREEN is Abnormal . reset is normal Check U200 DATA-OUTPUT block again NG.8 .3V NG.L602.must be turn high to low when first AC power-on OK.7. R106 & LED at keyboard !! cold solder or bad NG.17(sda. that means eeprom no response NG Check U300 eeprom 24LC16 relative circuit. and crystal NG Mechanical was stuck.scl)= hi 5V ? or keep transition ? NG If one of this item was NG. no keep transition Replace U302 MCU Replace eeprom 17 .40. (b)The screen had the Vertical Straight Line. might be stuck in Red.39 at High state(5V)? without press any key OK NG Press power key and check U302 pin 43 = low (0V) ? OK Check U302 pin 38 (LED green) will have transition from hi to low or low to hi when we press the power key?? OK Check main board R303 shortage? Replace Tact-switch SW105 at keyboard if still no work replace U302 MCU at main-board and check MCU relative reset circuit. check the relative circuit Keep transition. Green. Blue That symptom is cause by bad Panel issue ( might be the Source IC from Panel is cold solder or open loop ) so REPLACE THE PANEL TO NEW ONE. MCU no response Check U302 pin 20= 20MHz ? and pin 44 (VDD)=5V ? and pin 10 (reset)=0V ? at normal condition OK Without press key and change mode. Check ! If still no Led green indicator.41. Check U302 pin 16. check Q102.II. KEYBOARD BLOCK check Check U302 MCU pin 43.R301 cold solder OK. and check R300. check U300 pin 7 = low? NG Check JP302 is connect ? OK Check U300 pin 8 (vdd)= 5V.42. NG Check U304 pin 2 is a unstable rectangle wave ? OK. unstable wave Check all 3. all power system is working well . with harmonic pulse The interface board power is good The interface board is in powersaving state. press power key to wake up & check your signal input 18 .3v is no load.and all status of 5V & 3.3V or 5V .3V is working well unstable or uneven rectangle waveform without same duty. U200 Gmzan2 was shut-down. freq around 150K-158KHz that means all power of this interface board is in normal operation .if short-circuit or bad component rectangle waveform with large spike & harmonic pulse on front side . that means ABNORMAL operation was happened. stable rectangle waveform with equal duty. 3. there is short circuit or bad component was happened NG. means all 3. check 3.3V & 5V power. NG Measure input power at U304 LM2596 pin 1= 12V ? OK Check U304 pin 2 is a stable rectangle wave? Around 150k-158kHz stable rectangle wave with equal duty without any spike or harmonic pulse? OK Check ADAPTER and connector if loose? 2.POWER-BLOCK check **Note : the Waveform of U304 pin 2 can determined the power situation 1. that means the monitor is in power saving status . and only U302 MCU still working . 1). CAN’T BE FIXED BY AUTO KEY ** NOTE: There is so many kind of interferences. One is cause by some VGA-CARD that not meet VESA spec or power grounding too bad that influence our circuit 2). has extension Put away the additional cable May be the additional cable grounding is not quite well NO additional extension cable Does your noise only exist in one mode only? (ex: only at 1280x1024 @ 75 Hz. increase step by step slowly.ALL SCREEN HAS INTERFERENCES OR NOISE. until the horizontal interferences disappear OK END OK END NG Does your signal-cable have an additional cable for extension ?? Yes. repeat the procedure( increase/decrease SIZE one-step and press AUTO) until the interferences disappear. for some new AGP-VGA-CARD such situation always happened So in your control-panel icon . interferences still exist Adjust “FOCUS” step by step. move the monitor far from electronic equipment. press “AUTO” key.( rarely happened) Use DOT-pattern. advance . all mode Change the Signal-cable to new-one or Try other brand VGA-CARD (make sure just only that brand VGACARD has this problem . other is normal) NO.select monitor . or win98/99 shut-down mode pattern.at Size icon.screen-adjust .other is cause by external interferences.III. was the interferences disappear ?? NG. your VGA card timing back porch / front porch exceed vesa timing too far. press “APPLY” to save in your VGA 19 .contact RDTaipei) Yes. only happened on one mode That was cause by you VGA-CARD setting. press “”AUTO” key every step you increase the SIZE .setting . RGB= 50 Quit from OSD-screen. so we just re-do the white-balance process As following procedure OK If the Y less than 200 cd/m2 (after the contrast. CHROMA 7120 measured the center of panel Set Contrast. HE) and then press “AUTO” Or you can use “DOS1. Luminance adjustment as above ( page 8).THE PANEL LUMINANCE WAS DOWN Use white pattern and resolution 1280x1024 @ 60Hz . check Y= 240±10 cd/m2 ? OK NG If Y can reach ＞240 cd/m2 that means The lamp still working well. brightness =maximal. if the screen not full . the autoconfiguration will fail. press AUTO button to automatically adjust black level value.just set your “CLOCK” in OSD-MENU to zero or use some EDITOR software which can full fill the whole screen (ex: PE2.EXE” which attached in your Driver disk to optimize DOS mode performance V. measured Y(luminance) With chroma 7120. you will see the sign PASS Follow White-Balance. brightness = max) then change the LAMP of panel Use white-pattern.method to more detail procedure For do a white-balance adjust 20 .There is interferences in DOS MODE NOTE :the criteria of doing AUTO-CONFIGURATION : must be a full-size screen. So in dos mode . press MENU button along with AC power-plug in ( you will in factory mode) The OSD-menu will be at left-top of screen. V to lamps Return to control DESCRIPTION C) FUNCTION SPECIFICATIONS: The data test with the set of SAMPO DC TO DC CONVERTER (ROOM TEMPERATURE 25℃ ±4℃) ITEM Input voltage Input current output current adj:0v( min.6 3.V open H.: 79LL17-3-S I.2 2500 UNIT V mA FOR 1 CCFL LOAD:120KΩ FOR 1 CCFL LOAD:120KΩ REMARK 21 .) Frequency H.8 -TYP.: S5B-PH-SM3-TB PIN 1 2 3 4 5 SYMBOL Vin Vin ON/OFF Dimming GND Input voltage: 12V Input voltage: 12V ON: 3V OFF:0V Dimming range (0V~+5.0 50 1700 700 6.3 mA MIN.5 40 1550 600 6. 10. CONNECTOR PIN ASSIGMENT: A) CON1: INPUT MODEL NO.CON4.0V) GND DESCRIPTION B) CON2.:5 v(max. and the INVERTER is made by SAMPO SAMPO Parts No: DIVTL0085-D42 AOC Parts No.CON5: OUTPUT MODEL NO. use Hydis panel.6 B).5 60 1850 800 mA KHZ Vrms Vrms NO LOAD RL=120KΩ 2. 13.3 2.: SM02B-BHSS-1-TB PIN 1 2 SYMBOL HV OUTPUT RETURN Input H.) Output current adj. INVERTER –MODULE SPEC &TROUBLE SHOOTING CHART For 786LS model .V Load SYMBOL Vin Iin Iout (min) Iout (max) F Vopen Vload 5.CON3. 12 2100 MAX. D) FUNCTION TEST CIRCUIT: 120KΩ 10Ω 1 2 1 CON2 CON3 CON4 CON5 1 2 1 2 120KΩ 10Ω VT VT-181 2 CON1 1 2 3 4 5 120KΩ 10Ω 120KΩ 10Ω VT-181 VT 22 . II. TEST PT1 OR PT2 OUTPUT PIN 7 H. TROUBLE SHOOTING BLOCK DIAGRAM A) NO POWER: CHECKED ON FUSE F1 Vin=12 FAIL TO CHANGED F1= 4. SHORT R30 & OPEN LOAD 2.V VOLTAGE Vh=1600 ±100V rms FAIL TO CHANGE ON PT1 OR PT2 PASS FUNCTION TEST OK! 23 .0A/63V PASS TO CHECKED Q4 & Q6 VOUT = 9V FAIL TO CHANGED CH1: Q4/Q3/Q11 CH2: Q5/Q6/Q12 PASS TO CHECKED L1/L2 INPUT 9V TO L1 OR L2 FAIL TO CHANGED CH1: Q7/Q8/D12/PT1 CH2: Q9/Q10/C13/PT2 FUNCTION TEST OK ! PASS B) HIGHT VOLTAGE PROTECTION: 1. C) OUTPUT CURRENT ABNORMALITY: CHECK PWM FREQUNCY AT C6 CHIP THE OSCILLATOR FREQUNCY RANGE = 150 ~ 250 KHZ FAIL TO CHANGE C6 CHIP OR IC CHIP PASS FUNCTION TEST OK! D) ENBALE ABNORMALITY: IF ENABLE ABNORMALITY 1. TO CHECK IC PIN 9 TURN ON HAVE 12 VOLTAGES FAIL TO CHANGE ON Q1 & Q2 PASS FUNCTION TEST OK! E) DIMMING CONTROL ABNORMALITY: IF DIMMING ABNORMALITY TO CHECK R1/R2/R33/C6 IS FAILD? FAIL TO CHANGE ON R1/R2/R33/C6R203 PASS FUNCTION TEST OK! 24 . 3.F) TRANSFORMER ABNORMALITY: IF TRANSFORMER ABNORMELITY TO CHECK C3 & C4 CHIP OUTLINE OR TRANSFORMER FAIL TO CHANGE C3 & C4 OR TRANSFORMER PASS FUNCTION TEST OK! G) INSTRUMENTS FOR TEST: 1. DC POWER SUPPLY AC VTVM DIGITAL MULTIMERTER HIGHTVOLT PROB SCOPE GPS-3030D VT:-181E MODEL-34401 MODEL-1137A MODEL-V-6545 25 . 2. 4. 5. 7. MECHANICAL OF CABINET FRONT DIS-ASSEMBLY 26 . 1 2 3 4 5 6 LG Part No. Main Board Ass'y ( = Conversion Board ) Key Board Ass'y Power Board Ass'y LCD Adapter Ass'y Inverter Bezel Assy Bezel Key ORNAMENT Back Assy Back Cover Kensington Metal LG Logo Q'TY 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 2 4 1 1 1 1 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Desc.8 786LS SVC BOM No. Main Board Ass'y Control Board Ass'y Power Board Ass'y Adapter Ass'y Inverter Front Bezel 7 3911TKK426B Back Cover 8 3911TKK426C Stand 3911TKK426E 9 10 3911TKK426F Hinge Cover Hinge Cover Power Cord Power Cord Power Cord Power Cord Power Cord Power Cord Signal Cable Fuse Carton Box Carton Box Carton Box Carton Box 33L4344-AM-1/2L 33L4344-AM-1/3L 89L401A18NISA 89L404A18N YH 89L404A18N YH 89L410A18N IS 89L402A18N YH 89L 174L17-10D 33L4345 NA 44L3265-689-3A 44L3265-689-1A 44L3265-689-2A 11 12 13 3911TKK425G 3911TKK426D Stand Assy Stand Plate Screw Foot Pad Hinge Dust Cover (PE) Dust Cover ( Stand Back) Dust Cover (Front) Screw Hinge Dust Cover (Back)(L) Hinge Dust Cover (Back)® Korea Japan Europe Russia UK USA 786LS Signal cable Signal Duster cover Korea Janpan Europe/UK/USA Russia 27 . CBPC782KKGLM KEPC782KA3 DCPC780A7 ADPC12416AL 79LL17-3-S 705l782KF34-01 34L1001-AAL-4B 33L4530-AL-L 33L4531-1 705L782KB34008 34L916-AM-2B 15L5791-1 33L4532-AAM-L Q1L1030-12-128 705L782KB34008 34L919-AM-B 15L5711-1 Q1L1030-10-47 12L381-1 37L448-1 33L4345-AM-L 34L918-AM-B 34L917-AM-B Q1L140-10-47 Desc. 3911TKK425B 3911TKK425C 3911TKK425E 3911TKK425D 3911TKK425F 3911TKK426A SVC_BOM LISTING FOR LGE PART NO AOC Part No. 14 15 16 17 18 3911TKK425A 3911TKK425H 3911TKK425J 3911TKK425K 3911TKK425L LCD Panel J1 P980 CN603 CN302 Cn303 Screw 750LLK70-300 95L 900 31(Harness) 95L8018-305(harness) 33L801724A H 33L3802 9H 33L3802 5H M1L330-6-128 M1L1030-10-128 M1L1740-12-128 Q1L340-12-128 Q1L340-16-47 LCD PANEL HT17E11300 Connector (Power) Connector (Panel) Connector (Key) Connector (Inverter) Screw Assy Screw Screw Screw Screw Screw 1 1 1 1 1 1 10 4 4 8 4 19 Q1L1030-10-128 Screw 3 28 . 5V (800mA SPEC) 2. control-inverter-on.3V for GMZAN2 consumption for GMZAN2 consumption for LVDS consumption 29 . 60Hz/240V.5V LT1117 5V to 3.3V ( 800mAspec) 3.3V (5A SPEC) 3. Eeprom.3V RT9164 5V to 2.off 860mA when Cable not Connected 841mA when Normal operation To Hyundai-300 Panel around 1450mA AIC1084 5V to 3. 12V to 5V (5A SPEC) 5V To CPU.9. 50Hz Output DC 12V 5A INVERTER MODULE Input DC 12V Output AC 1500V/30K-80KHz Current 14mA Main board power system LM2596S-5. 24c21. POWER SYSTEM AND CONSUMPTION CURRENT ADAPTER MODULE Input AC 110V. 5v LVDS power ( LT1117) 5V to 3. PCB LAYOUT MAIN PCB LAYOUT DDC chip RT9164 5V to 2.3v Input Connector LVDS Gmzan2 AIC1084 5V to 3.3v PanelPower Control Inverter-connector Keyboard-connector LM2596 convert 12V to 5V Audio-connector MCU 30 .10. 3V +3.5V AIC1084-3. SCHEMATIC DIAGRAM TOP-LEVEL FLOW Power block POWER +3.5V LVDS block +3.0V .5V LM2596-5.0V +3. July 29.11.Gmzan2 block SCALER +3.3V LVDS2 VCC ORED[0-7] OGRN[0-7] TX0-/+O OBLU[0-7] TX1-/+O DENABLE TX2-/+O PVS TX3-/+O PHS TXC-/+O TXCLKIN /PWRDWN OUT VCC TX0-/+O TX1-/+O TX2-/+O TX3-/+O TXC-/+O SDA SCL +5V NT7181 50MHZ CRYSTAL2 +5V VCC +5V VCC MFB1 MFB2 MFB7 MFB8 MFB9 HFS RST IRQ TCLK1 RST1 HDATA0 HCLK 24LC21A EEPROM SDA SCL XTAL1 XTAL2 SDA SCL /VGA_CON RXD TXD EEPROM1 24C16 MICRO CONTROLLER Winbond MCU X1 X2 Title Size B Date: VCC SIEMENS 43B1-M CRYSTAL1 20MHZ Document Number BLOCK DIAGRAM 715L820-2-2 Sheet 1 Rev A Monday.3V +5V ZAN2 ERED EGRN EBLU LVDS1 VCC ERED[0-7] PANEL(HYUNDAI-300) VCC TX0-/+E TX1-/+E TX2-/+E TX3-/+E TXC-/+E INPUT R G B H-SYNC V-SYNC RED GREEN BLUE HSYNC/CS VSYNC PDISPE PVS PHS PCLK LVDSEN EGRN[0-7] TX0-/+E EBLU[0-7] TX1-/+E DENABLE TX2-/+E PVS TX3-/+E PHS TXC-/+E TXCLKIN /PWRDWN NT7181 HDATA0 /VGA_CON RXD VGA_SDA VGA_SCL MFB2 TXD MFB7 MFB8 TCLK TCLK1 MFB9 IRQ HCLK RST1 RST HFS +5V OBLU OGRN MFB1 ORED +3.3V RT9164-2. 2002 of 1 31 .5V +5.3V +12V 12V +2.3V +2.3V +2.5V +5V +2. 1 uF PGND GND 50 MHz R227 /VGA_CON 100 C251 10nF A ADC GNDA ADC-AGND C D210 5.1 uF 2 C214 C215 C262 C(OP) +5V HCLK IRQ HFS 107 R316 GND R327 10 K R317 0 124 123 109 110 111 112 113 0(OP) 106 MFB5 MFB6 MFB10 MFB11 MFB4 MFB3 MFB2 MFB1 MFB0 C237 0.5V L204 2 C929 C947 0.1 uF GND 1 VDDA 0 C228 C222 0.5V C620 10uF 2 R223 +3.1 uF C218 0.1 uF 0.3V L200 C956 2 +B2. July 29.1 uF 1 C203 C204 SVDDA C205 PCLKB HDATA0 MFB7 MFB8 MFB9 99 105 104 102 103 101 98 HDATA MFB7 MFB8 MFB9 HCLK IRQ HFS PLL_RVDDA ADC_VDD2 ADC_VDD1 RVDD2B RVDD1 RVDD2 RVDD2A RVDD3 RVDD3A SRVDD1 SRVDD2 CVDD2 DVDD SVDD SYN_VDD L202 2 600(1206) 1 PGND RVDDA U201 1 SB GND VCC OUT 4 100uF 3 R215 bead 120 PGND TCLK C250 33 pF GND 0.3V PPWR 10 K 2 1 GND GND 3 ADC-AGND PGND GND R225 10K Q200 MMBT3904 C245 0.5V C206 100uF C207 0..1 uF C GND BAT54 C244 0.5V U905 RT9164 IN ADJ OUT 2 GND C930 100uF C946 0.1uF 1 +B2.6V GND +D5V C405 0.5V R221 RP300 10 K GND 0 60 12 33 40 65 108 11 21 58 125 139 149 128 DAC_DVDDA 129 PLL_DVDDA 136 PLL_SVDDA 137 DAC_SVDDA 143 +A2.47] PD[0.3V +3.1 uF C246 0.1 uF C212 0.1 uF R231 3 0(OP) +3.1 uF C943 100uF NC NC NC GND VCC Reserved PSCAN Reserved Reserved NC Reserved Reserved XTAL(Reserved) Reserved Reserved STI_TM1 RESETn VCLK 74LVT14_ADC 74LVT14_ADC SUB_GNDA ADC_GNDA ADC_BGNDA ADC_GGNDA ADC_RGNDA CVSS1 CVSS1A RVSS1 SRVSS1 RVSS2 CVSS2 RVSS3 RVSS4 CVSS3 CVSS4 DVSS SVSS SYN_VSS SRVSS2 ADC_GND2 ADC_GND1 CVSS2A CVSS5 PLL_DGNDA SUB_DGNDA SUB_SGNDA PLL_SGNDA DAC_DGNDA DAC_SGNDA PLL_RGNDA SUB_RGNDA STI_TM2 SCAN_IN1 Reserved SCAN_IN2 SCAN_OUT1 SCAN_OUT2 154 155 156 157 159 160 C314 22 uF GND C957 1000PF GND R229: Let Zan1 been reseted twice! +D5V JP202 0 JP203 R (OP) +12V GND +3.5V L205 ADC-AGND GND PLL_GNDA 1 0 C216 22uF C213 0.1 uF C226 0.1 uF ADC GNDA GND GND Size C Date: Document Number Monday.3V Connect two grounds at single point only.1 uF C220 0.1 uF C217 0.1 uF C227 0.1 uF C219 0.1 uF C211 0.6 V A 100 +5V DDC_SCL R219 100 R210 2K U401E 11 C 10 74LVT14_ADC 9 R212 1000PF 1000PF D207 1N4148 10 nF A ADC-AGND ADC-AGND C A R204 75 R208 0 C231 10 nF C234 75 R207 0 R201 100 C230 10 nF C233 1N4148 ADC-AGND A C R206 VDDA C 75 R203 0 C229 10 nF C232 10 nF D204 ADC-AGND 95 RED+ PCLKA PHS PCLKA PHS PVS PDISPE PVS PDISPE 94 RED- PD[0.5V VDDA DVDDA SVDDA RVDDA 100uF 0.1 uF C209 0.1 uF GND 8 U203 SDA SCL 5 6 R218 C 7 100 24LC21A 4 R213 1K D200 5.3V L203 2 600(1206) 1 C224 100uF ADC-AGND C225 0.6V +5V +D5V ADC-AGND ADC-AGND R216 10 K R214 D208 C 1K D201 5.1 uF Title C223 100uF +2.1 uF C210 0.1 uF 600(1206) 1 C200 C201 DVDDA C202 1000pF GMZAN2 Block 4 3 2 1 5 6 7 8 77 79 U200 84 ADC_VDDA 88 ADC_BVDDA 92 ADC_GVDDA 96 ADC_RVDDA PGND L201 2 600(1206) TCLK PD47 PD46 PD45 PD44 PD43 PD42 PD41 PD40 PD39 PD38 PD37 PD36 PD35 PD34 PD33 PD32 PD31 PD30 PD29 PD28 PD27 PD26 PD25 PD24 PD23 PD22 PD21 PD20 PD19 PD18 PD17 PD16 PD15 PD14 PD13 PD12 PD11 PD10 PD9 PD8 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 PVS PHS PBIAS PPWR PDISPE PCLKA PCLKB 141 6 7 9 10 13 14 15 16 17 19 20 22 23 24 25 26 27 28 29 31 32 34 35 36 37 38 39 42 46 47 48 50 51 52 53 54 55 56 57 62 63 64 66 67 68 69 70 71 73 74 75 76 43 44 45 TCLK 100uF PD47 PD46 PD45 PD44 PD43 PD42 PD41 PD40 PD39 PD38 PD37 PD36 PD35 PD34 PD33 PD32 PD31 PD30 PD29 PD28 PD27 PD26 PD25 PD24 PD23 PD22 PD21 PD20 PD19 PD18 PD17 PD16 PD15 PD14 PD13 PD12 PD11 PD10 PD9 PD8 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 PVS PHS LVDS EN PPWR PDISPE CLK 0.47] 91 GREEN+ 90 VDDA BLUE /VGA_CON1 VGA_HSYNC VGA_VSYNC VGA_SCL VGA_SDA D206 C GREEN- 87 BLUE+ 86 BLUE- LVDS EN L207 1 0 R602 2 PCLKB 148 100 (op) U401D 8 74LVT14_ADC VSYNC C236 100 pF(OP) 150 VSYNC OSD_CLK OSD_VREF OSD_HREF OSD_DATA2 OSD_DATA1 OSD_DATA0 117 116 115 120 119 118 +D5V 122 121 R326 10 K C 0 PCLKA R603 0(OP) PCLKB PCLKB VGA_5V A +5V 2 HSYNC/CS OSD_FSW OSD_DATA3 D302 1N4148 A R229 RST1 0 100 2 3 4 83 97 130 C235 135 142 100 pF(OP) 145 152 153 C619 0. 2002 0.1uF GND +2..1 uF C221 +D5V 0.1 uF R224 10K 4 3 2 1 G2 S2 G1 S1 5 6 7 8 PANEL_P D2 D2 D1 D1 U202 SI9933ADY +3.1 uF R232 0 0 R233 0 131 132 133 134 127 138 144 146 81 82 85 89 93 PANEL_P SIEMENS 43B1-M ZAN2 715L820-2-2 Sheet 1 Rev A of 4 .1 uF +A2.+D5V +3.1UF R209 2K 1 U401A 2 3 R211 100(op) U401B 4 1 2 3 A A 5.3V ADC-AGND ZAN2 1 5 8 18 30 41 49 61 72 114 126 140 151 158 78 80 59 147 R234 C942 0.6 V ADC-AGND A C 5.1 uF 0. R230 0(OP) +2.1 uF C208 0.1 uF 0.6 V GND VDDA C MFB2 D202 1N4148 R200 100 A ADC-AGND D203 VGA_5V CN200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 HEADER 14 1N4148 CA R205 D205 1N4148 10 nF A ADC-AGND ADC-AGND 1N4148 R202 100 ADC-AGND C948 C949 ADC-AGND +5V R220 RXD TXD RXD TXD DDC_SDA R217 10 K D209 D303 C618 0. .3 C601 0.23] EDGE PWRDWN TXOUT0TXOUT0+ TXOUT1TXOUT1+ TXOUT2TXOUT2+ TXOUT3TXOUT3+ TXCLKOUTTXCLKOUT+ LVDSVCC LVDSGND LVDSGND LVDSGND PLLVCC PLLGND PLLGND GND GND GND GND GND 17 32 48 47 46 45 42 41 38 37 40 39 44 49 43 36 34 C613 10uF 16V + TX0-O TX0+O TX1-O TX1+O TX2-O TX2+O TX3-O TX3+O TXO0 TXO1 TXO2 TXO3 TXO4 TXO5 TXO6 TXO7 TXO8 GND PD44 PD45 PD[24. 2002 LVDS 715A820-2-2 Sheet 6 Rev B of 6 .5] PD36 PD37 PD0 PD1 PD2 PD3 PD4 PD5 PD38 PD39 PD6 PD7 PD8 PD9 PD10 PD11 PD40 PD41 PD12 PD13 PD14 PD15 PD16 PD17 51 52 54 55 56 3 50 2 4 6 7 11 12 14 8 10 15 19 20 22 23 24 16 18 25 27 28 30 PCLKA 31 TXIN0 TXIN1 TXIN2 TXIN3 TXIN4 TXIN6 TXIN27 TXIN5 TXIN7 TXIN8 TXIN9 TXIN12 TXIN13 TXIN14 TXIN10 TXIN11 TXIN15 TXIN18 TXIN19 TXIN20 TXIN21 TXIN22 TXIN16 TXIN17 TXIN23 TXIN24 TXIN25 TXIN26 TXCLKIN AVDD_3.1uF 100uF GND 1 9 EDGE PWRDWN TXOUT0TXOUT0+ TXOUT1TXOUT1+ TXOUT2TXOUT2+ TXOUT3TXOUT3+ TXCLKOUTTXCLKOUT+ LVDSVCC LVDSGND LVDSGND LVDSGND PLLVCC PLLGND PLLGND GND GND GND GND GND 17 32 48 47 46 45 42 41 38 37 40 39 44 TX0-E TX0+E TX1-E TX1+E TX2-E TX2+E TX3-E TX3+E TXCK-E TXCK+E TXE0 TXE1 TXE2 TXE3 TXE4 TXE5 TXE6 TXE7 V V PD38 PD39 PD[6..LVDS Block EVEN U601 NT7181 TSSOP56 PD36 PD37 PD[0.01UF L602 BEAD (120) C605 10uF 16V + C606 0.17] HEADER 12X2 ADC GNDA ADC GNDA ADC-AGND R605 R GND C604 0.01UF L601 BEAD (120) TXE0 TXE2 TXE4 TXE8 TXE6 TXO0 TXO2 TXO4 TXO8 TXO6 PANEL_P 2 4 6 8 10 12 14 16 18 20 22 24 1 3 5 7 9 11 13 15 17 19 21 23 TXE1 TXE3 TXE5 TXE9 TXE7 TXO1 TXO3 TXO5 TXO10 TXO7 PD40 PD41 PD[12.3 PD46 PD47 PD[30..01UF L604 BEAD (120) 330uF 1 C940 0.1uF 330uF L900 AVDD_3..1uF 26 C602 C603 + 0. July 29.1uF 26 1 9 GND AVDD_3.35] C927 35 33 53 29 21 13 5 GND GND C615 10uF 16V + C616 0..3 TXE8 TXE9 CN603 49 43 36 34 35 33 53 29 21 13 5 GND C607 10uF 16V + C608 0.11] V GND AVDD_3.1uF PHS PVS PDISPE PCLKB GND SIEMENS 43B1-M Title Size Document Number Custom Date: Monday.29] AVDD_3.01UF L603 BEAD (120) U904 LT1117 3 IN ADJ OUT 2 (600) C928 C939 0.3 TXCK-O TXO10 +D5V C614 0.3 GND ODD U602 NT7181 TSSOP56 51 52 54 55 56 3 50 2 4 6 7 11 12 14 8 10 15 19 20 22 23 24 16 18 25 27 28 30 31 TXIN0 TXIN1 TXIN2 TXIN3 TXIN4 TXIN6 TXIN27 TXIN5 TXIN7 TXIN8 TXIN9 TXIN12 TXIN13 TXIN14 TXIN10 TXIN11 TXIN15 TXIN18 TXIN19 TXIN20 TXIN21 TXIN22 TXIN16 TXIN17 TXIN23 TXIN24 TXIN25 TXIN26 TXCLKIN V V V LVDS EN GND PD42 PD43 PD18 PD19 PD20 PD21 PD22 PD23 PD44 PD45 PD24 PD25 PD26 PD27 PD28 PD29 PD46 PD47 PD30 PD31 PD32 PD33 PD34 PD35 PD42 PD43 PD[18.. 4/A12 P2.3/A11 P2.1 uF R(OP) R311 10 K GND JP302 0 /BKLT-ON 10 K 24LC04B GND GND GND VR501 W BKLT ADJ 10 K(OP) 0 C401 620 22uF GND GND Title Size B Date: 2 GND R401 R402 BKLT-PWM R315 MMBT3904 1 3 0.4/AD4 P0.5 WR/P3.MCU Block +5V +5V +5V R431 10 K(OP) R238 0 MUTE U302 HDATA0 MFB7 MFB8 MFB9 HCLK HFS BKLT-PWM VOL C316 22 uF GND RXD TXD IRQ MFB2 11 13 14 15 16 17 18 19 R340 20 22 uF A 1N4148 X300 RST TEST(OP) C303 R313 33 pF 10 K C306 33 pF GND GND GND GND +A5V +5V R333 PS3 R300 10 K SDA R301 10 K 5 U300 VCC SI WP A0 A1 A2 VSS 7 1 2 3 4 8 JP303 C300 0. July 29. 2002 of 6 2 .1 uF 8 7 6 5 1000 pF 22 SCL 6 SCK 1 12 23 34 Q304 +5V R403 1K SIEMENS 43B1-M Document Number MICRO CONTROLLER 715L820-2-2 Sheet 3 2 PW5V-ON R236 10 K(OP) Rev B Monday.3 TO/P3.4 T1/P3.6 P1.5/A13 P2.0/AD0 KEY +5V /BKLT-ON R321 0 (OP) R323 0 (OP) R325 GND 0 (OP) GND R328 10 K R329 10 K CN302 1 2 3 4 5 6 7 8 9 4 1 2 3 4 HEADER 9 CP302 1000 pF MUTE C954 1000PF 8 7 6 5 GND C951 1000PF MMBT3904(OP) +5V SDA SCL C RST1 /VGA_CON D301 C313 +5V CP301 C305 100uF C304 0.7K Ohm +A5V 1 2 3 +5V R303 4.2/A10 P2.7 8XC51/PLCC R239 4.0 T2EX/P1.1/AD1 P0.0/A8 P2.2 P1.3 P1.2/AD2 P0.3/AD3 P0.6/A14 P2.7/A15 PSEN ALE/PROG P0.7K(OP) R235 4.7K PS3 ? R237 0 1 2 1 2 1 Q201 3 K/E SelectR319 STDBY P2.1 uF CN303 1 2 3 4 5 HEADER 5 +5V MUTE STDBY 2K +5V C944 C403 100uF VOL +12V GND +12V +12V CN304 1 2 3 4 5 6 HEADER 6 GND C953 1000PF STDBY C955 1000PF 20MHz R341 0 XTAL1 GND 21 XTAL2 VCC EA/VP NC NC NC NC R302 10 K RST 2 3 4 5 6 7 8 9 10 T2/P1.4 P1.1 P1.6 RD/P3.5 P1.7 RST RXD/P3.1 INT0/P3.7K(OP) (Panel-Select)* 24 25 26 27 28 29 30 31 32 33 GND 36 37 38 39 40 41 42 43 44 35 KEY1(ORANGE?) KEY2(GREEN?) RP301 8 1 7 2 6 3 5 4 4.1/A9 P2.2 INT1/P3.6/AD6 P0.0 TXD/P3.5/AD5 P0.7/AD7 P0. 2002 1 C312 330 uF/35V GND SIEMENS 43B1-M POWER 715L820-2-2 Sheet 5 Rev A of 6 3 .1 uF D1 D1 D2 D2 8 7 6 5 0 3 +D5V R310 +D5V U305 Vin GND AIC 1084 L300 Vout 2 1 (600) GND C945 GND 470uF/16V C952 1000PF GND C950 JP301(OP) 3 2 1 GND +A5V +3.1 uF C309 D300 33 uH(OP) B320 L906 1 CHOKE 2 330 uF/35V C941 0.0 / Si8050 J1 +12V POWER 2 4 6 FB301 1 3 C307 5 5 3 330 uF/35V INDUCTOR-P GND F 0.7K 1 3 Q202 MMBT3904 2 GND Title Size A Date: Document Number Monday.+5V +12V U304 LM2596S-5.1 uF C308 1 VIN TO263 /ON GND FBK Vout 4 2 T300 POWER Block +5V 1 GND +A5V L905 2 CHOKE +12V GND +5V +5V R306 10K 1 2 3 4 R305 4.3V 1000PF +3.3V 2 R307 PW5V-ON 4. July 29.7K U306 S1 S2 S3 G 4431 C310 330 uF/35V C311 0.