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SERVICE MANUAL
17" 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
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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
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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 ......................................................
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1. SPECIFICATIONS FOR LCD MONITOR
1-1 General specifications 1. LCD-Panel : Active display area Pixel pitch Pixel format
17 inches diagonal 0.264 mm x 0.264 mm 1280 x 1024 RGB vertical stripe arrangement
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Display Color : 6-bit, 16.2 million colors External Controls : Power On/Off, Menu-key, Auto key, Left key, Right key OSD menu Controls Contras , Brightness, Auto Center, Focus, Clock , H/V-position , DOS mode select, R/G/B, Color-(7200K,6500K), Languages, Reset Input Video Signal : Analog-signal 0.7Vpp Video signal termination impedance 75 OHM Scanning Frequencies : Horizontal: 30 KHz - 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, V tolerance ± 0.5 Hz Input Power Source : Switching Mode Power Supply AC 100 240 V, 50/60 Hz Universal Type Operating Temperature : 5°C - 40°C Ambient Non-operating Temperature : 5°C - 40°C Humidity : Operating : 10% to 85% RH (non-condensing) Non Operating : 5% to 85%RH (38.7 maximum wet bulb temperature)
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10. Weight : 7.6 kg 11. External Connection : 15Pin D-type Connector, AC power-Cord 12. View Angle : x-axis right/left = 70, y-axis up/down = 45 ,65 13. Outside dimension : Width x Height x Thickness = 407x 434 x 173 mm 14. Plug and Play : VESA DDC1/DDC2B 15. Power saving : VESA DPMS
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LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board, an Inverter module, keyboard, External Adapter which house the flat panel control logic, brightness control logic, DDC and DC-DC conversion The Inverter module will drive the backlight of panel . The Adapter will provides the 12V DC-power 4.16 Amp to Main-board,and Inverter module .
Monitor Block Diagram
CCFT Drive. 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, DDC
1-2
Interface Connectors (A) AC-Power Cable (B) Video Signal Connectors and Cable (C) External Adapter
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2. PRECAUTIONS AND NOTICES
2-1 ASSEMBLY PRECAUTION (1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD panel surface by touching with bare hands ( Polarizer film, surface of LCD panel is easy to be flawed) In the LCD panel, the gap between two glass plates is kept perfectly even to maintain display characteristic and reliability. If this panel is subject to hard pressing, 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. (3) Please wipe out drops of adhesive like saliva and water in LCD panel surface immediately. They might damage to cause panel surface variation and color change. (4) Do not apply any strong mechanical shock to the LCD panel. 2-2 OPERATING PRECAUTIONS (1) Please be sure to unplug the power cord before remove the back-cover. (be sure the power is turn-off) (2) Please do not change variable resistance settings in MAIN-BOARD, they are adjusted to the most suitable value. If they are changed, it might happen LUMINANCE does not satisfy the white balance spec. (3) Please consider that LCD backlight takes longer time to become stable of radiation characteristic in low temperature than in room temperature. (4) Please pay attention to displaying the same pattern for very long-time. Image might stick on LCD. 2-3 STORAGE PRECAUTIONS (1) When you store LCD for a long time, it is recommended to keep the temperature between 5-40 without the exposure of sunlight and to keep the humidity less than 85% RH. (2) Please do not leave the LCD in the environment of high humidity and high temperature such as 60 90%RH. (3) Please do not leave the LCD in the environment of low temperature; below -15. 2-4 HIGH VOLTAGE WARNING The high voltage was only generated by INVERTER module, if carelessly contacted the transformer on this module, can cause a serious shock. (the lamp voltage after stable around 600V, with lamp current around 6.5mA, and the lamp starting voltage was around 1650V, at Ta=25)
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3. OPERATING INSTRUCTIONS
This procedure gives you instructions for installing and using the LCD monitor display. 1. Position the display on the desired operation and plugin the power cord into External Adapter AC outlet. 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. If the AC outlet in your location does not have provisions for the grounded type plug, the installer should attach the proper adapter to ensure a safe ground potential. 2. 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. The connector information is as follow:
1 6 11
5 10 15
15 - Pin Color Display Signal Cable
PIN NO. 1. 2. 3. 4. 5. 6. 7. 8. 3. 4. 5. 6.
DESCRIPTION RED GREEN BLUE GND GND GND-R GND-G GND-B
PIN NO. 9. 10. 11. 12. 13. 14. 15.
DESCRIPTION 5V power from VGA-card GND SYNC. GND SDA HORIZ. SYNC VERT. 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. The Power-On indicator lights when the display is on. With proper signals feed to the display, a pattern or data should appear on the screen, adjust the brightness and contrast to the most pleasing display, or press auto-key to get the best picture-quality. This monitor has power saving function following the VESA DPMS. Be sure to connect the signal cable to the PC. If your LCD monitor requires service, it must be returned with the power cord & Adapter.
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4. ADJUSTMENT
4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS Adjustments should be undertaken only on following function : Contras , Brightness, Black level, Phase, Clock , H/V-position , Languages, Color-(7200,6500,User), Auto level, OSD-position, Languages, Reset 4-2 ADJUSTMENT METHOD Press MENU button to activate OSD Menu or make a confirmation on desired function, Press Left/Right button to select the function or done the adjustment.
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White-Balance, Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. Before started adjust white balance ,please setting the Chroma-7120 MEM. Channel 1 to 7200 color and MEM. channel 2 to 6500 color, ( our 7200 parameter is x = 302 ±20, y = 319 ±20, Y = 200 ±20cd/m2 and 6500 parameter is x = 313 ±20, y = 329 ±20, Y = 200 ±20 cd/m2) How to setting MEM.channel you can reference to chroma 7120 user guide or simple use " SC" key and " NEXT" key to modify x,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, and the OSD screen will located at left top of panel. I. 1. 2. 3. Bias (Low luminance) adjustment : Press " AUTO" button , and wait for message " Pass" Set the contrast on OSD window to the value=45 , color (user )R,G,B set to "50" adjust the brightness on OSD until chroma 7120 measurement reach the value Y=240 cd/m2 ±10 cd/m2
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II. a. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
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.channel to Channel 01 ( with up or down arrow on chroma 7120 ) The lcd-indicator on chroma 7120 will show x = 302 ±10, y = 319 ±10, Y = 200 ±5 cd/m2 Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100 Adjust the Color(user)Mode: GREEN on OSD window, 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 B=100 repeat above procedure ( item 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. 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.channel to Channel 02 ( with up or down arrow on chroma 7120 ) The lcd-indicator on chroma 7120 will show x = 313 ±10, y = 329 ±10, Y = 200 ±5 cd/m2 Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100 Adjust the Color(user)Mode: GREEN on OSD window, 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 B=100 repeat above procedure ( item 5,6,7) 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, the OSD window location was placed at middle of screen)
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Clock adjustment Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shut-down mode (dot-pattern). Adjust until the vertical-Stripe-shadow as wide as possible or no visible. This function is adjust the PLL divider of ADC to generate an accurate pixel clock Example : Hsyn = 31.5KHz Pixel freq. = 25.175MHz (from VESA spec) The Divider number is (N) = (Pixel freq. x 1000)/Hsyn From this formula, we get the Divider number, if we fill this number in ADC register (divider register), the PLL of ADC will generate a clock which have same period with above Pixel freq.(25.175MHz) the accuracy of this clock will effect the size of screen.(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). 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 relationship of pixel data and pixel clock not so match, we will see the horizontal interference on screen ,we only find this phenomena in crosstalk pattern or dot pattern , 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, if that 2 functions failed, the H/V position will be failed too. Adjust the four edge until all four-edges are visible at the edge of screen. LANGUAGE function There have 5 language for selection, press "MENU" to selected and confirm , press " LEFT" or " RIGHT" to change the kind of language ( English , Deutch , Francais, Espanol, 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 , if the monitor status was in " Factory-mode" this reset function will clear Power-on counter ( backlight counter) too. OSD-LOCK function Press Left & Right key during switching on the monitor, the access to the OSD is locked, user only has access to " Contrast, Brightness, Auto-key ". If the operator pressed the Left & Right during switching on the monitor again , the OSD is unlocked.
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FRONT PANEL CONTROL KNOBS Power button : Press to switch on or switch off the monitor. Auto button : to perform the automatic adjustment from CLOCK, FOCUS, H/V POSITION, but no affect the color-temperature Left/Right button : select function or do an adjustment. MENU button : to activate the OSD window or to confirm the desired function
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5. CIRCUIT-DESCRIPTION
5-1 SPECIAL FUNCTION WITH PRESS-KEY A). press Menu button during 2 seconds along with plug-in the DC Power cord: That operation will set the monitor into "Factory- mode", in Factory mode we can do the White balance adjustment with RS232 In Factory mode, OSD-screen will locate in left top of screen. Press POWER-button off to on once will quit from factory mode and back to user-mode. B). Press both Left & Right button along with Power button off to on once will activate the OSD-LOCK function, repeat this procedure will disable OSD-LOCK In OSD-LOCK function, all OSD function will be lock , except Contrast and Brightness OSD-INDEX EXPLANATION 1. CABLE NOT CONNECTED: Signal-cable not connected. 2. INPUT NOT SUPPORT: a. INPUT frequency out of range: H > 83kHz, v > 75Hz or H < 28kHz, v < 55Hz b. INPUT frequency out of VESA-spec. (out of tolerance too far)
5-2
CIRCUIT FUNCTION DESCRIPTION 1. U200,GMZAN2 ( all-in-one chip solution for ADC, OSD, scalar and interpolation) : USE for computer graphics images to convert analog RGB data to digital data with interpolation process, zooming, generated the OSD font , perform overlay function and generate drive-timing for LCD-PANEL. 2. U302,89C51RD2 (PHILIPS- MCU, type 8052 series with 64k Rom-size and 512 byte ram) : Use for calculate frequency, pixel-dot , detect change mode, rs232-communication, power-consumption control, OSD-index warning , ...etc. 3. U203,24LC21 (MicroChip IC) : EEPROM type, 1K ROM-SIZE, for saving DDC-CONTENT. 4. U300,24C16 (ATMEL IC) : EEPROM type, 16K ROM-SIZE, for saving AUTO-config data, White-balance data, and Power-key status and Backlight-counter data. 5. U304,LM2569S( NS brand switching regulator 12V to 5V with 3A load current) . 6. U305,AIC 1084-33CM (AIC brand linear regulator 5V to 3.3V) 7. 8. U905,RT9164(Linear regulator 5V to 2.5V) U600,U601,LVDS ( use NOVATEK NT7181F) Convert the TTL signal to LVDS signal , the advantage of LVDS signal is : the wire can be lengthen and eliminate wire number , low EMI .LVDS signal is high frequency but low voltage, only 0.35 VPP ,the frequency is seven times higher than TTL U401, 74F14D(Schmitt triggger) The 74F14 contains six logic inverters which accept standard TTL input signals and provide standard TTL Output levels
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MODULE-TPYE COMPONENT: 1. 2. ADAPTER : CONVERSION-module to convert AC 110V-240V to 12VDC, with 4.16 AMP INVERTER : CONVERSION-module to convert DC 12V to High-Voltage around 1650V, with frequency 30K-80Khz, 5.6mA-13mA Main-board Block diagram
Input analog RGB & H,V,& ddc signal & Rs232 communication GMZAN2 (U200)
DDC-chip
Data Digital RGB Panel Control Signal: Phs, Pvs, PclkA/B,Pdispe Communication signal: Hclk,Hfs,Hdata0
LVDS chip (U601, U602)
PANEL
Oscillator 50 mhz
Panel Power 5V
MCU ( U302 )
Crystal 20 MHz
Panel-Power Control (U202)
DC 12V 4.16Amp
Keyboard module
INVERTER module
EXTERNAL-ADAPTER
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5-3
SOFTWARE FLOW CHART
I.
Power-On Subroutine CHART
POWER-ON START
Initial MCU I/O, Interrupt vector & Ram Yes Check Eeprom is empty ? Initial 1.POC (backlight counter) 2. 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, overwrite the data with backup value.
Check Previous power-switch status from Eeprom, & other system status
Initial GMZAN2 Yes SET factory mode flag
Check if in Factory mode?(when power-on,press the MENU Button will be in FACTORY mode) No Clear factory mode flag
MAIN-SUBROTINE LOOP
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II.
MAIN SUBROTINE LOOP
Main loop start
Process Power-saving status ( according to below flow-chart result)
)
Check GMZAN2 IFM status .is change or not. And check Signal cable status ( cable not connected or not ) ** IFM is the register which measured the HSYN & Vsyn status No
Yes, 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 , setting GMZAN2according to above parameter, set LED status, 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 , the osd time-out counter will trigger )
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Do Auto-config automatically
if the RS232 buffer is full, process the command( while adjust white-balance in factory mode)
6 A).
INTERFACE-BOARD TROUBLE-SHOOTING CHART
*Use the PC Win 98 white pattern, with some icon on it, and Change the Resolution to 640x480 60 Hz / 31 KHz **NOTICE : The free-running freq. of our system is 48 KHz / 60 Hz, so we recommend to use another resolution to do trouble shooting, this trouble shooting is proceed with 640x480 @60Hz 31Khz
I.
NO SCREEN APPEAR
DC-Power Part
Measured Input DC-voltage ( J1)= 12 V? Measured U305 AIC 1084 pin 2 = 3.3V? Measured U904 LT1117 pin 2= 3.3V? Measured U905 RT9164 pin 2=2.5v
Check Correspondent component. Is there any shortage or cold solder?
Yes, all DC level exist
Disconnected the Signal cable( Loose the Signal cable ),Is the screen show "Cable Not Connected" ?
Yes, there have OSD show Connected the Signal cable again, Check LED status.
Led Green
No, nothing is show
Led Orange Check Power switch is in Power-on status , and check if Power switch had been stuck ? Led orange OK, Keyboard no stuck Led Green NG Measured RGB (r200,r201,r202) H,V Input at U401 pin 9 ,4 ,was there have signal ? OK,input Normal OK,Wire tight enough Measured Oscillator Block Oscillator U201 & Crystal X300 OK,clock normal Check communication pin between U200 & MCU pin 2,6,7. , is it have transition? OK, Mcu have transition NG, no transition Check Correspondent component short/open ( Protection Diode ) and Signal cable bad ? Replace MCU
Connected the Signal cable again, Check LED status.
Check the Wire-Harness from CN603 was tight enough?, check the Wire connection to panel side too
Check Panel-Power Circuit Block
OK,Panel Power OK Check U200 Data-output Block OK, 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. if Replace "MAIN-BOARD" , Please re-do "DDC-content" programmed & "WHITE-Balance". 2. if Replace " INVERTER" only, Please re-do " WHITE-Balance"
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PANEL-POWER CIRCUIT check R225 should have response from 0V to 5V When we switch the power switch from on to off OK,R225 have response
NG, no Voltage
NG
Check the PPWR panel power relative circuit, R223,R224, Q200,U202(pin 5,6,7,8) In normal operation, when LED =green, R223 should =0 v, If PPWR no-response when the power switch Turn on and turn off, replace the U200-GMZAN2
Yes
Check U202 pin 1,3= 5V
Measured the U202 pin 5,6,7,8= 5 V? OK OK
Replace U202 ( Nmos, SI9953) NG
Check U304 relative circuit.(D300,L906..) Check JP202 shortage
INVERTER Control Relative Circuit
Measured the inveter connector CN303 Pin 1,2=12V, pin 3 on/off control=5V (on) YES, still no screen NG Check the Bklt-On relative circuit, R315, Q304, R311, In normal operation, when LED =green, R315 Bklt-On should =0 v, If Bklt-On no-response when the power switch turn on-off, Replace the MCU
NG Replace INVERTER to new-one, and Check the screen is normal ??
OK,& Re-do white balance
OSCILLATOR BLOCK
NG,no transition
Measured U201 Oscillator output R215= 50MhZ ?
Replace Oscillator U201 NG,no transition Replace Crystal X300
OK, has transition
Measured X300 Crystal output R340= 20MhZ ?
OK
U200-DATA OUTPUT
Measured PCLK(L207,R603) PVS,PHS,PDISPE (pin 73,74,43 from U200 ) Is there have any transition? Pclk around 47MHz to 57MHZ , PVS=60.09Hz , PHS around 67 KHz ??(refer to input signal=640x480@60 Hz 31k, and LED is green) NG , no transition Replace GMZAN2 (U200) or replace MAINBOARD.
If Main Board being replace , please do the DDC content reprogrammed OK
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II (a) THE SCREEN is Abnormal , stuck at white screen, OSD window can't appear, but keyboard & LED was normal operation. At general, this symptom is cause by missing panel data or panel power, 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. Yes, tight enough Check the Panel-Power circuit as above (page 16) U202 pin 5,6,7,8 ,must be 5V Tighten it.
Yes, Voltage normal NG Check the LVDS-Power L601,L602,L603,L604,L900= 3.3V ? Yes, Voltage normal NG Check the both U601 & U602 LVDS-Input pin 31= 45mhz 65mhz, and pin 27 = Vsyn freq, pin 28 = 45khz- 65 khz Yes, Frequency normal Replace both LVDS chip ( U601 & U602) Check OSCILLATOR Block as above ( page 16)
OK, all clock is normal Check U200 DATA-OUPUT block as above ( page 16) Check U904,which convert the 5V to 3.3V
NG, no data output
Replace U302 MCU and check it RESET pin 10 ,must be turn high to low when first AC power-on
OK, reset is normal Check U200 DATA-OUTPUT block again
NG, still no data out
Replace U200 GMZAN2
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II. (b)The screen had the Vertical Straight Line, might be stuck in Red, 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. KEYBOARD BLOCK check
Check U302 MCU pin 43,42,41,40,39 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, and crystal NG Mechanical was stuck, Check !
If still no Led green indicator, check Q102, R106 & LED at keyboard !! cold solder or bad
NG, 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 U302 pin 16,17(sda,scl)= hi 5V ? or keep transition ? NG If one of this item was NG, check the relative circuit
Keep transition, that means eeprom no response NG Check U300 eeprom 24LC16 relative circuit, check U300 pin 7 = low? NG Check JP302 is connect ? OK Check U300 pin 8 (vdd)= 5V, and check R300,R301 cold solder
OK, no keep transition Replace U302 MCU
Replace eeprom
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POWER-BLOCK check **Note : the Waveform of U304 pin 2 can determined the power situation
1. stable rectangle waveform with equal duty, freq around 150K-158KHz that means all power of this interface board is in normal operation ,and all status of 5V & 3.3V is working well unstable or uneven rectangle waveform without same duty, that means ABNORMAL operation was happened, check 3.3V or 5V ,if short-circuit or bad component rectangle waveform with large spike & harmonic pulse on front side , means all 3.3v is no load, U200 Gmzan2 was shut-down, and only U302 MCU still working , that means the monitor is in power saving status , all power system is working well . 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. 3.
NG
Check U304 pin 2 is a unstable rectangle wave ?
OK, unstable wave Check all 3.3V & 5V power, there is short circuit or bad component was happened
NG, 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
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III.ALL SCREEN HAS INTERFERENCES OR NOISE, CAN'T BE FIXED BY AUTO KEY
** NOTE: There is so many kind of interferences, 1). One is cause by some VGA-CARD that not meet VESA spec or power grounding too bad that influence our circuit 2).other is cause by external interferences, move the monitor far from electronic equipment.( rarely happened) Use DOT-pattern, or win98/99 shut-down mode pattern, press "AUTO" key, was the interferences disappear ?? NG, interferences still exist Adjust "FOCUS" step by step, until the horizontal interferences disappear OK END
OK
END
NG Does your signal-cable have an additional cable for extension ?? Yes, 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, other is normal) NO, 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 ,contact RDTaipei)
Yes, only happened on one mode That was cause by you VGA-CARD setting, your VGA card timing back porch / front porch exceed vesa timing too far, for some new AGP-VGA-CARD such situation always happened So in your control-panel icon ,select monitor ,setting , advance ,screen-adjust ,at Size icon, increase step by step slowly, press ""AUTO" key every step you increase the SIZE . repeat the procedure( increase/decrease SIZE one-step and press AUTO) until the interferences disappear, press "APPLY" to save in your VGA
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There is interferences in DOS MODE
NOTE :the criteria of doing AUTO-CONFIGURATION : must be a full-size screen, if the screen not full , the autoconfiguration will fail. So in dos mode ,just set your "CLOCK" in OSD-MENU to zero or use some EDITOR software which can full fill the whole screen (ex: PE2, HE) and then press "AUTO" Or you can use "DOS1.EXE" which attached in your Driver disk to optimize DOS mode performance
V.THE PANEL LUMINANCE WAS DOWN
Use white pattern and resolution 1280x1024 @ 60Hz , CHROMA 7120 measured the center of panel
Set Contrast, brightness =maximal, RGB= 50 Quit from OSD-screen, measured Y(luminance) With chroma 7120, check Y= 240±10 cd/m2 ?
OK NG
If Y can reach 240 cd/m2 that means The lamp still working well, so we just re-do the white-balance process As following procedure
OK
If the Y less than 200 cd/m2 (after the contrast, brightness = max) then change the LAMP of panel
Use white-pattern, press MENU button along with AC power-plug in ( you will in factory mode) The OSD-menu will be at left-top of screen,
press AUTO button to automatically adjust black level value, you will see the sign PASS
Follow White-Balance, Luminance adjustment as above ( page 8),method to more detail procedure For do a white-balance adjust
20
6 B). INVERTER MODULE SPEC &TROUBLE SHOOTING CHART For 786LS model , use Hydis panel, and the INVERTER is made by SAMPO SAMPO Parts No: DIVTL0085-D42 AOC Parts No.: 79LL17-3-S I. CONNECTOR PIN ASSIGMENT: A) CON1: INPUT
MODEL NO.: 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~+5.0V) GND DESCRIPTION
B) CON2,CON3,CON4,CON5: OUTPUT
MODEL NO.: SM02B-BHSS-1-TB PIN 1 2 SYMBOL HV OUTPUT RETURN Input H.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.) Output current adj.:5 v(max.) Frequency H.V open H.V Load SYMBOL Vin Iin Iout (min) Iout (max) F Vopen Vload 5.5 40 1550 600 6.0 50 1700 700 6.5 60 1850 800 mA KHZ Vrms Vrms NO LOAD RL=120K 2.3 2.6 3.3 mA MIN. 10.8 -TYP. 12 2100 MAX. 13.2 2500 UNIT V mA FOR 1 CCFL LOAD:120K FOR 1 CCFL LOAD:120K REMARK
21
D) FUNCTION TEST CIRCUIT:
120K 10
1 2 1
CON2 CON3
CON4 CON5
1 2 1 2
120K 10 VT
VT-181
2
CON1 1 2 3 4 5
120K 10
120K 10
VT-181
VT
22
II. TROUBLE SHOOTING BLOCK DIAGRAM A) NO POWER:
CHECKED ON FUSE F1 Vin=12
FAIL
TO CHANGED F1= 4.0A/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. SHORT R30 & OPEN LOAD
2. TEST PT1 OR PT2 OUTPUT PIN 7 H.V
VOLTAGE Vh=1600 ±100V rms
FAIL
TO CHANGE ON PT1 OR PT2
PASS
FUNCTION TEST OK!
23
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
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. 2. 3. 4. 5.
DC POWER SUPPLY AC VTVM DIGITAL MULTIMERTER HIGHTVOLT PROB SCOPE
GPS-3030D VT:-181E MODEL-34401 MODEL-1137A MODEL-V-6545
25
7.
MECHANICAL OF CABINET FRONT DIS-ASSEMBLY
26
8
786LS SVC BOM
No. 1 2 3 4 5 6 LG Part No. 3911TKK425B 3911TKK425C 3911TKK425E 3911TKK425D 3911TKK425F 3911TKK426A
SVC_BOM LISTING FOR LGE PART NO
AOC Part No. 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. 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. 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
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
9.
POWER SYSTEM AND CONSUMPTION CURRENT
ADAPTER MODULE Input AC 110V, 60Hz/240V, 50Hz Output DC 12V 5A
INVERTER MODULE Input DC 12V Output AC 1500V/30K-80KHz Current 14mA
Main board power system
LM2596S-5, 12V to 5V (5A SPEC) 5V To CPU, Eeprom, 24c21, control-inverter-on.off 860mA when Cable not Connected 841mA when Normal operation To Hyundai-300 Panel around 1450mA
AIC1084 5V to 3.3V (5A SPEC) 3.3V
RT9164 5V to 2.5V (800mA SPEC) 2.5V
LT1117 5V to 3.3V ( 800mAspec) 3.3V
for GMZAN2 consumption
for GMZAN2 consumption
for LVDS consumption
29
10.
PCB LAYOUT
MAIN PCB LAYOUT
DDC chip RT9164 5V to 2.5v LVDS power ( LT1117)
5V to 3.3v
Input Connector
LVDS
Gmzan2
AIC1084 5V to 3.3v PanelPower Control
Inverter-connector
Keyboard-connector
LM2596 convert 12V to 5V
Audio-connector MCU
30
11. SCHEMATIC DIAGRAM
TOP-LEVEL FLOW
Power block
POWER
+3.3V +3.3V
+12V
12V +2.5V +5V
+2.5V +5.0V +3.3V +2.5V
AIC1084-3.3V RT9164-2.5V
LM2596-5.0V
.Gmzan2 block
SCALER
+3.3V +2.5V
LVDS block
+3.3V +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
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, July 29, 2002
of
1
31
+D5V
+3.3V +3.3V L200 C956 2 +B2.5V 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 +A2.5V VDDA DVDDA SVDDA RVDDA 100uF 0.1 uF 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 0.1 uF 0.1 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 0.1 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 0.1 uF PGND GND
50 MHz
R227 /VGA_CON 100 C251 10nF A ADC GNDA ADC-AGND C D210 5.6 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 0.1 uF C GND BAT54 C244 0.1 uF GND 8 U203 SDA SCL 5 6 R218 C 7 100 24LC21A 4 R213 1K D200 5.6 V ADC-AGND A C 5.6V GND +D5V C405 0.1UF R209 2K 1 U401A 2 3 R211 100(op) U401B 4 1 2 3 A A 5.6V +5V +D5V ADC-AGND ADC-AGND R216 10 K R214 D208 C 1K D201 5.6 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..47]
PD[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 0.1 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 +3.3V ADC-AGND ZAN2
1 5 8 18 30 41 49 61 72 114 126 140 151 158 78 80 59 147
R234 C942 0.1 uF +A2.5V L205 ADC-AGND GND PLL_GNDA 1 0 C216 22uF C213 0.1 uF C217 0.1 uF C218 0.1 uF C219 0.1 uF C220 0.1 uF C221 +D5V 0.1 uF R231 3 0(OP) +3.3V L203 2 600(1206) 1 C224 100uF ADC-AGND C225 0.1 uF C226 0.1 uF C227 0.1 uF GND 1 VDDA 0 C228 C222 0.1 uF 0.1 uF ADC GNDA GND GND Size C Date: Document Number Monday, July 29, 2002 0.1 uF Title C223 100uF +2.5V L204 2 C929 C947 0.1uF 1 +B2.5V U905 RT9164 IN ADJ OUT 2 GND C930 100uF C946 0.1uF GND +2.5V C620 10uF 2 R223 +3.3V PPWR 10 K 2 1 GND GND 3 ADC-AGND PGND GND R225 10K Q200 MMBT3904 C245 0.1 uF C246 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 +3.3V Connect two grounds at single point only. R230 0(OP) +2.5V C206 100uF C207 0.1 uF C208 0.1 uF C209 0.1 uF C210 0.1 uF C211 0.1 uF C212 0.1 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
LVDS Block
EVEN
U601 NT7181 TSSOP56 PD36 PD37 PD[0..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_3.3
C601 0.1uF 26
C602
C603
+
0.1uF 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..11]
V
GND
AVDD_3.3
TXE8 TXE9
CN603 49 43 36 34 35 33 53 29 21 13 5 GND C607 10uF 16V + C608 0.01UF L602 BEAD (120) C605 10uF 16V + C606 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..17]
HEADER 12X2
ADC GNDA
ADC GNDA
ADC-AGND R605 R
GND C604 0.1uF 26 1 9 GND
AVDD_3.3 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..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..29]
AVDD_3.3
TXCK-O TXO10
+D5V C614 0.01UF L603 BEAD (120) U904 LT1117 3 IN ADJ OUT 2 (600) C928 C939 0.1uF 330uF L900
AVDD_3.3
PD46 PD47 PD[30..35]
C927 35 33 53 29 21 13 5 GND GND C615 10uF 16V + C616 0.01UF L604 BEAD (120) 330uF 1
C940 0.1uF
PHS PVS PDISPE PCLKB
GND
SIEMENS 43B1-M
Title Size Document Number Custom Date: Monday, July 29, 2002
LVDS
715A820-2-2
Sheet
6
Rev
B
of
6
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 0.1 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 0.1 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/P1.0 T2EX/P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST RXD/P3.0 TXD/P3.1 INT0/P3.2 INT1/P3.3 TO/P3.4 T1/P3.5 WR/P3.6 RD/P3.7
8XC51/PLCC
R239 4.7K(OP)
R235 4.7K(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 4.7K Ohm +A5V 1 2 3 +5V R303 4.7K PS3
? R237 0 1 2 1 2 1 Q201 3 K/E SelectR319
STDBY
P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15 PSEN ALE/PROG P0.7/AD7 P0.6/AD6 P0.5/AD5 P0.4/AD4 P0.3/AD3 P0.2/AD2 P0.1/AD1 P0.0/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 0.1 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, July 29, 2002
of
6
2
+5V +12V U304 LM2596S-5.0 / Si8050 J1 +12V POWER 2 4 6 FB301 1 3 C307 5 5 3 330 uF/35V INDUCTOR-P GND F 0.1 uF C309 D300 33 uH(OP) B320 L906 1 CHOKE 2 330 uF/35V C941 0.1 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 4.7K U306 S1 S2 S3 G 4431 C310 330 uF/35V C311 0.1 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
+3.3V
1000PF
+3.3V
2
R307 PW5V-ON 4.7K 1
3 Q202 MMBT3904 2
GND
Title Size A Date: Document Number Monday, July 29, 2002
1
C312 330 uF/35V
GND
SIEMENS 43B1-M
POWER
715L820-2-2
Sheet
5
Rev
A
of
6
3