NEC MultiSync 20WGX2 Service Manual
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NEC MultiSync 20WGX2 Service Manual

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SERVICE MANUAL
SERVICE MANUAL
MultiSync 20WGX
MultiSync 20WGX
MODEL ID : 20WGX
MODEL ID : 20WGX
VERY IM
VERY IMPORTA
PORTANT!
NT!
This Equipment is compatible with RoHS Directive and Lead-Free.
This Equipment is compatible with RoHS Directive and Lead-Free.
Since the equipment is compatible with RoHS Dire
Since the equipment is compatible
of specific chemically noxious substances is restricted; use only designated spare parts
of specific chemically noxious substances is restricted; use only designated spare parts
when it is necessary to replace such parts with new parts.
when it is necessary to replace such parts with new parts.
Use lead-free solder for the equipment compatible with ones with substrates on which
Use lead-free solder for the equipment compatible with ones with substrates on which
lead-free components are mounted. For the details, refer to
lead-free components are mounted. For the details, refer to
ing Work
ing Work
"
"
given in the next page.
given in the next page.
NEC DISPLA
NEC DI
COLOR MONITOR
COLOR MONITOR
®
®
with RoHS Directive, use com
1st Edition
1st Edition
SPLAY SOLUT
Y SOLUTIONS
DECEMBER 2005
DECEMBER 2005
2 2
2 2
-BK(B)
-BK(B)
ctive, use components in which the
ponents in which the use
"
"
Caution for Lea d d -Free Solder-
Caution for Lea
IONS, L
, LT T D. D.
P P ART NO : 5999
ART NO : 599910796
10796
use
-Free Solder-
200
200
603
603
08GJ5LBG
08GJ5LBG

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  • Page 1 Work ing Work ” ” given in the next page. given in the next page. 1st Edition 1st Edition NEC DI NEC DISPLA SPLAY SOLUT Y SOLUTIONS IONS, L , LT T D. D. DECEMBER 2005 DECEMBER 2005 08GJ5LBG...
  • Page 2 1. Safety guideline in servicing 1. Safety guideline in servicing 1) 1) Neve ver t r tou ouch ch th the p e por orti tion ons w s wit ith t h the he ma mark rkin ing ( ).
  • Page 3 Product Specifications Product Specifications Specification Specification Item Item Analog Analog Input Input Digital Digital Input Input LPL LM201WE2-SLA1 LPL LM201WE2-SLA1 Size Size 20.1 20.1 " " (51.1133cm) (51.1133cm) Active Active Display Display Area Area 433.44 433.44 (H) (H) x x 270.90 270.90 (V) (V) mm Resolution...
  • Page 4 CONTENTS CONTENTS Page No. Page No. USER USER ’ ’ S S MA MANUA NUAL L ........................................1-1 SERIAL SERIAL NUMBER NUMBER INFORMA INFORMATION TION ................
  • Page 5 2  2  MultiSync 20WGX  MultiSync 20WGX  User’s Manual User’s Manual...
  • Page 6 Index Index Warning, Caution ........................English-1 Warning, Caution ........................English-1 Declaration Declaration ....................................................English-1 English-1 Canadian Department of Communications Compliance Statement ........... English-2 Canadian Department of Communications Compliance Statement ........... English-2 Declaration of Conformity ......................English-2 Declaration of Conformity ......................English-2 Contents............................
  • Page 7 EU and Switzerland. Switzerland. MultiSync is a registered trademark of NEC Display Solutions, Ltd. in the countries of U.K., Italy, Austria, Netherlands, Switzerland, MultiSync is a registered trademark of NEC Display Solutions, Ltd. in the countries of U.K., Italy, Austria, Netherlands, Switzerland, Sweden, Spain, Denmark, Germany, Norway and Finland.
  • Page 8 U.S. Re S. Respo sponsib nsible Par le Party: NEC Di NEC Displa splay Solut y Solutions of Am ions of Americ erica, In a, Inc. c. A A d d d d r r e e s s s s : :...
  • Page 9      s          i        i        l        l      g          g     Your new NEC MultiSync LCD monitor box* should contain the following: Your new NEC MultiSync LCD monitor box* should contain the following:      n      n        E        E • •...
  • Page 10 Quick Start Quick Start To attach the MultiSync LCD monitor to your system, follow these instructions: To attach the MultiSync LCD monitor to your system, follow these instructions: 1. 1. T T urn off th urn off the powe e power to your c r to your compu omputer ter.
  • Page 11 6. 6. Plac Place the conne e the connector co ctor cover on ver onto the bac to the back cabin k cabinet ( et (Figure C.4 Figure C.4). ). 7. 7. Plac Place all e all cabl cables in es into th to the hoo e hooks (...
  • Page 12 Tilt and Swivel Tilt and Swivel Grasp both sides of the monitor screen with your hands and adjust the tilt and swivel as desired ( Grasp both sides of the monitor screen with your hands and adjust the tilt and swivel as desired ( Figure TS.1 Figure TS.1).
  • Page 13 5. 5. Lift up th Lift up the stand to e stand to unlatch the unlatch the upper hooks upper hooks and remo and remove the ve the stand ( stand ( F igure M.4 Figure M.4). ). 6. 6. Rem Remove t ove the 2 scr he 2 screws o...
  • Page 14 Controls Controls OSM (On-Screen Manager) control buttons on the front of the monitor OSM (On-Screen Manager) control buttons on the front of the monitor function as follows: function as follows: To access OSM menu, press any of the control buttons (MENU/EXIT, Left, Right, Down, Up). To access OSM menu, press any of the control buttons (MENU/EXIT, Left, Right, Down, Up).
  • Page 15 Image Controls (Analog input only) Image Controls (Analog input only)        h        h      s        s          i        i LEFT / RIGHT LEFT / RIGHT        l        l      g          g          n      n Controls Horizontal Image Position within the display area of the LCD. Controls Horizontal Image Position within the display area of the LCD.
  • Page 16 Information Information The Information menu indicates the current input, display resolution, horizontal and vertical frequency, and polarity The Information menu indicates the current input, display resolution, horizontal and vertical frequency, and polarity settings of the monitor. The model and serial numbers of your monitor are also indicated. settings of the monitor.
  • Page 17 NOTE: NOTE: As with all personal display devices, NEC DISPLAY SOLUTIONS recommends displaying moving images and As with all personal display devices, NEC DISPLAY SOLUTIONS recommends displaying moving images and using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.
  • Page 18 CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITOR CAN CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITOR CAN REDUCE EYE, REDUCE EYE, SHOULDER AND SHOULDER AND NECK FA NECK FATIGUE. CHECK THE TIGUE. CHECK THE FOLLOWING WHEN Y FOLLOWING WHEN YOU POSITION OU POSITION THE M THE MONITOR: ONITOR:...
  • Page 19 Specifications Specifications        h        h      s        s          i        i        l        l      g          g     M M o o n n i i t t o o r r S S p p e e c c i i f f i i c c a a t t i i o o n n s s M M u u l l t t i i S S y y n n c c 2 2 0 0 W W G G X X M M o o n n i i t t o o r r N N o o t t e e s s...
  • Page 20 Features Features Thin-frame design Thin-frame design creates more desktop space creates more desktop space for you to work and for you to work and play play, while the , while the flat screen flat screen ’ ’ s crisp, bright images and crystal- s crisp, bright images and crystal- clear text deliver a clear text deliver a comfortable viewing experience.
  • Page 21 NOTE: NOTE: As with all personal display devices, NEC DISPLAY SOLUTIONS recommend displaying moving images and using As with all personal display devices, NEC DISPLAY SOLUTIONS recommend displaying moving images and using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.
  • Page 22 TCO’03 TCO’03 Congratulations! Congratulations! The display you have just purchased carries the TCO The display you have just purchased carries the TCO ’ ’ 03 Displays 03 Displays label. This means that your display is designed, manufactured and label. This means that your display is designed, manufactured and tested according to some of the tested according to some of the strictest quality and environmental strictest quality and environmental...
  • Page 23      n NEC DISPLAY SOLUTIONS is strongly committed to environmental protection and sees recycling as one of the company NEC DISPLAY SOLUTIONS is strongly committed to environmental protection and sees recycling as one of the company’ ’ s s        E        E top priorities in trying to minimize the burden placed on the environment.
  • Page 24 Serial Number Information Serial Number Information Refer to the serial number information shown below. Refer to the serial number information shown below. EX.) SERIAL NUMBER LABEL EX.) SERIAL NUMBER LABEL MODEL : 20WGX MODEL : 20WGX  –  – SERIAL NO. : SERIAL NO.
  • Page 25 DISASSEMBLY DISASSEMBLY Before you disassemble the set, turn off power and pull out the power plug. Before you disassemble the set, turn off power and pull out the power plug. ■ ■ Use th Use the prope e proper screwdrive r screwdriver.
  • Page 26 Step 2 : Step 2 : Symb mbol ol ForEur Europ op e. e. Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Num Numbe ber) r) Color  Color  7 7 1 1 1 1 0 0 3 3 4 4 0 0 1 1 0 0 2 2 0 0 A A S S R R E E M M A A I I N N E E N N O O N N...
  • Page 27 Step 4 : Step 4 : Symbo mbol l For Eur Europ op e e Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Num Numbe ber) r) Color  Color  7 7 1 1 1 1 0 0 3 3 4 4 0 0 1 1 0 0 2 2 0 0 A A S S R R E E M M A A I I N N E E N N O O N N...
  • Page 28 Step 6 : Step 6 : Symb mbol ol For Eur Europ op e e Descr crip ip tio tion Cabi abinet Model Model (Liteo teon P n P art art Nu Numb mber) Color  Color  6 6 7 7 1 1 1 1 1 1 3 3 0 0 0 0 0 0 2 2 9 9 0 0 A A R R N N E E S S S S E E Y Y I I R R E E...
  • Page 29 S S t t e e p p 8 8 : : Symb mbol ol For Eur Europ op e. e. Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Num Numbe ber) r) Color ...
  • Page 30 Step 9 : Step 9 : Symb mbol ol For Eur Europ op e e Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Nu Numb mber) Color  Color  1 1 1 1 7 7 1 1 1 1 0 0 3 3 3 3 0 0 0 0 6 6 2 2 0 0 A A S S R R E E - - M M A A I I N N E E - - F F L L A A T T Black...
  • Page 31 Step 10 : Step 10 : Symbo mbol l For Eur Europ op e. e. Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Num Numbe ber) r) Color  Color  671103000 67110300001 01 00 A A R R N N E E S S S S L L D D S S 3 3 0 0 3 3 0 0 Black Black...
  • Page 32 Step 12 : Step 12 : Symb mbol ol For Eur Europ op e e Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Nu Numb mber) Color  Color  71 1 10 1063 6300 0042 42 0A S S R R E E...
  • Page 33 Step 14 : Step 14 : Symbo mbol l For Eur Europ op e e Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Num Numbe ber) r) Color  Color  714033010 7140330103 3 0 0 A A S S R R E E W W D D O O U U B B L L E E Black...
  • Page 34 Step 16 : Step 16 : Symbol Symbol For Europe Europe Description Description Cabinet Cabinet Model Model (Liteon Part Number) (Liteon Part Number) Color Color 7140330 7140330082P0A 082P0A SCREW-MACHINE-NON SCREW-MACHINE-NON Black Black E-FLAT HEAD-M3-8-NI E-FLAT HEAD-M3-8-NI Step 17 : Step 17 : Unplug the Unplug the signal harnes signal harnes s s...
  • Page 35 S S t t e e p p 1 1 8 8 : : Symb mbol ol For Eur Europ op e e Descri cri tio tion n Cabine inet t Model Model (Liteo teon P n P art art Nu Numb mber) Color ...
  • Page 36 Step 20 : Step 20 : Symb mbol ol For Eur Europ op e e Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Nu Numb mber) Color  Color  2 2 4 4 7 7 7 7 4 4 0 0 2 2 0 0 1 1 2 2 4 4 0 0 0 0 A S R R E E M M A A I I N N E E F F L L A A T T...
  • Page 37 Step 22 : Step 22 : Symbo mbol l For Eur Europ op e e Descri cri tio tion Cabi abinet Model Model (Liteo teon P n P art art Num Numbe ber) r) Color  Color  2 2 7 7 7 7 7 7 4 4 6 6 2 2 0 0 4 4 1 1 6 6 2 2 0 0 B B S S I I E E L L D D S S I I E E L L D D Black...
  • Page 38 A A D D S S M M E E N N T T R R O O C C E E D D R R E E S S A A B B L L E E O O F F C C O O N N E E N N S S Page Page 1.
  • Page 39 . . A A l l i i c c a a t t i i o o n n This adjustment specification should be applied to the 20WGX This adjustment specification should be applied to the 20WGX monitor . monitor .
  • Page 40 20WGX 20WGX 20WGX 20WGX URL : Indicate below URL. URL : Indicate below URL. Destination Destination Default Default Setting Setting For NEC NEC model model NECDISPLAYSOLUTIONS.COM NECDISPLAYSOLUTIONS.COM *4 : OSD/OSM Setting *4 : OSD/OSM Setting Destination Destination Factory Factory Setting...
  • Page 41 .2 E .2 Ente nter Fa r Fact ctory ory Mod Mode e a) Press a) Press “ “ MENU/EXITt MENU/EXITt ” ” button then open OSM menu. button then open OSM menu. MENU / EXIT MENU / EXIT No OSD No OSD b) OSM select to b) OSM select to...
  • Page 42 .3 .3 E E n n t t e e r B r Bu u r r n n i i n M n Mo o d d e e a) No signal input. a) No signal input. b) Press b) Press “...
  • Page 43 ■ ■ F/W VER : Firmware version F/W VER : Firmware version ■ ■ F/W ID : Frimware ID F/W ID : Frimware ID ■ ■ FACTORY PRESET : FACTORY PRESET : Reset all items of Factory preset in user mode. Clear Reset-able Hours Running. Clear Auto Adjust Reset all items of Factory preset in user mode.
  • Page 44 Page 4 Page 4 OSM DESIGN DESIGN BAR/Value BAR/Value 0 0 : : Normal Normal 1 : Debug mode 1 : Debug mode OSM SELECT SELECT OSD/OSM OSD/OSM 0 0 : : OSM 1 1 : : OSD 0/1/2 0/1/2 0 0 : : Not Not indicate indicate URL...
  • Page 45 Page 5 Page 5 ■ ■ L L C C D D a a n n e e l t l ty y e e . . Page 6 Page 6 ■ ■ e Dat ata a . (Adjustment needed) .
  • Page 46 . . A A d d u u s s t t m m e e n n t t .1 .1 M M e e a a s s u u r r in ing I g Ins nst t r r um ume e n n t t s s , , i i gs gs a a n n d T d T o o o o ls ls...
  • Page 47 .5 .5 a a n n e e l l B B r r i i g g h h t t n n e e s s s C s Ch h e e c c 1) Enter the input signal of 1) Enter the input signal of 1680x1050 @ 60Hz, in Full white pattern.
  • Page 48 . Ref efe e r r en ence S ce Sig igna nal T l T im imin ing g Item Item VESA VESA 1024 1024 768 Abbr brev ev ia iati tion 0 0 z z E E S S A A 0 0 0 0 i i xe xel l fr fre e ue...

  • Page 49: Table Of Contents

    INSPECTION INSPECTION TABLE OF CONTENTS TABLE OF CONTENTS Page Page 1. 1. Gener General al Descr Descrip iption tion ........................................5-3 ..5-3 2. 2. Elect Electrical rical Chara Characteristic cteristics s ..

  • Page 50: Input Signal Signals S

    Page Page 8. Safety ..........................5-2 8. Safety ..........................5-2 0 0 8.1Insulation Resistance Test ................8.1Insulatio n Resistance Test ..................... . 5-2 5-20 0 8.2Dielectric Strength Test ......8.2Dielectric Streng th Test .....................5-2 ..............5-2 0 0 8.3Leakage Current Test ... 8.3Leakage Curren t Test ...

  • Page 51: Powe

    1. General Description 1. General Description Product Specifications Product Specifications Specification Specification Item Item     Analog Analog Input Input Digital Digital Input Input LPL LM201WE2-SLA1 LPL LM201WE2-SLA1 Size Size 20.1" 20.1" (51.1133cm) (51.1133cm)   Active   Active Display Display Area Area 433.44 433.44 (H)
  • Page 52 2. 2. Electrical Characteristics Electrical Characteristics 2.1 Input signals 2.1 Input signals 2.1.1 Signals 2.1.1 Signals Video Video signal signal Analog Analog RGB RGB / / Digital Digital RGB RGB (TMDS) (TMDS) Sync Sync signal signal Separate Separate Sync Sync (Negative (Negative / / Positive) Positive) Composite Sync (Negative /...
  • Page 53 White Level White Level Video Swing Video Swing Black Level Black Level S S e e t t u u p p B B l l a a n n k k L L e e v v e e l l S S y y n n c c S S y y n n c c L L e e v v e e l l Sync On Green Wave Form...
  • Page 54 2.2 Power Supply 2.2 Power Supply  AC100 - 240V +/- 10%  AC100 - 240V +/- 10% Input Voltage Input Voltage Input Input Current Current (*1) (*1) 1.0 A@AC100V A@AC100V / / 0.52 0.52 A@AC240V A@AC240V Frequency Frequency 50 / / 60 60 Hz Hz +/-3Hz +/-3Hz...
  • Page 55 2.3 Pow 2.3 Power Manage er Management ment This function conforms DPMS of VESA, and International Energy Star Office Equipment program. This function conforms DPMS of VESA, and International Energy Star Office Equipment program. Power Management condition and status Power Management condition and status for ANALOG for ANALOG Input mode Input mode Power ...
  • Page 56 2.4 Others 2.4 Others 2.4.1 Scaler 2.4.1 Scaler NEC-DS prefers Genesis OAK NEC-DS prefers Genesis OAK chipset. chipset. HDCP HDCP Lead Lead Free Free Faroudja Faroudja Output Output Resolution Resolution Gm5861 Gm5861 WSXGA+ WSXGA+ 2.4.2 Audio System 2.4.2 Audio System...
  • Page 57 2.4.4 Dimming Control Range 2.4.4 Dimming Control Range Bright ness shall be controlled by OSM less than 25% to 100%. Bright ness shall be controlled by OSM less than 25% to 100%. PWM frequency should be ad PWM frequency should be ad  justed by MPU, and default frequency should be  justed by MPU, and default frequency should be 3.5 times by Vsync.
  • Page 58 2.7 Visual Ergonomic Requirement of TCO 2.7 Visual Ergonomic Requirement of TCO ’ ’ 03 Standard 03 Standard Following items should be meet for Visual Ergonomic of TCO Following items should be meet for Visual Ergonomic of TCO ’ ’ 03 standard.
  • Page 59 3. Connector Pin Assignment 3. Connector Pin Assignment 3.1 Analog Video Input: Mini D-SUB 15 Pin 3.1 Analog Video Input: Mini D-SUB 15 Pin Pin assignment for analog video input connector  Pin assignment for analog video input connector  Pin No Signal Signal Red Video...
  • Page 60 3.2 Digital Inter F 3.2 Digital Inter Face Signals ace Signals Pin assignment for DVI-D Pin assignment for DVI-D (24pin) (24pin) connector  connector  Pin-Assignment of DVI-D connector : Pin-Assignment of DVI-D connector : TX2- TX2- TX1- TX1- TX0+ TX0+ TX2+ TX2+ TX1+ TX1+...

  • Page 61: Others Others

    4. Support Video Modes 4. Support Video Modes Monitor shall judge the received signal timing by following table. Monitor shall judge the received signal timing by following table. Monitor shall support all signal timings within the following frequency range. Monitor shall support all signal timings within the following frequency range. H-Sync range: from 24.7KHz to 81.2KHz [Analog] H-Sync range: from 24.7KHz to 81.2KHz [Analog] H-Sync range: from...
  • Page 62 H sync H sync V V total total V V sync sync (Hz) (Hz) Type Type H H POL V V POL Signal Signal Name Name (KHz) (KHz) ≦ ≦ 1440*900@60 1440*900@60 ≦ ≦ fV fV 62.9Hz 62.9Hz Total Total ≦...

  • Page 63: Plug & & Play Play

    5. DDC Function 5. DDC Function 5.1 Plug & Play 5.1 Plug & Play This monitor abides by VESA DDC2B. This monitor abides by VESA DDC2B. See page 5- See page 5-29 29 for EDID data. for EDID data. Monitor can output EDID data, although PC+5V from PC is inactive. Monitor can output EDID data, although PC+5V from PC is inactive.
  • Page 64 6.2 85Hz 85Hz Refresh R Refresh Rate Support ate Support Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display Monitor should display “ “ Out of Range Out of Range ”...

  • Page 65: Inspection Condition Condition

    7. External Inspection on the LCD Module 7. External Inspection on the LCD Module 7.1 Inspection Condition 7.1 Inspection Condition 7.1.1 Conditions 7.1.1 Conditions  Ambient conditions :  Ambient conditions : a. T a. Temperature : emperature : 20~25 20~25 b. b. Humidity Humidity : : 65 65 +/-...

  • Page 66: Polarizer Defects

    7.2 Polarizer Defects 7.2 Polarizer Defects Items Items Criteria Criteria 0.2 , 0.3 0.2 , 0.3 2.0 , N 2.0 , N Scratches Scratches Linear Linear ≦ ≦ ≦ ≦ ≦ ≦ ≦ ≦ ≦ ≦ ≦ ≦ 0.5 , N 0.5 , N ≦...

  • Page 67: Foreign Material

    7.3 Foreign Material 7.3 Foreign Material Items Items Criteria Criteria 0.1 , 0.3 0.1 , 0.3 2.0 , N 2.0 , N Foreign Foreign Linear Linear ≦ ≦ ≦ ≦ ≦ ≦ ≦ ≦ Material Material ≦ ≦ ≦ ≦ 0.5 , N 0.5 , N ≦...
  • Page 68 8 8 . . S S a a f f e e t t y y ● ● Destination : All over the world Destination : All over the world  Applicable standards : UL60950/C-UL/EN60950  Applicable standards : UL60950/C-UL/EN60950 ● ● ●...
  • Page 69 8 8 .3 .3 Leak akag age e Cu Curr rren ent T t Tes est t  A leakage current should be measured under the conditions specified below, in order to confirm that  A leakage current should be measured under the conditions specified below, in order to confirm that the requirements of the judgment standard are met.
  • Page 70 9. PLUG & PLAY Communication and OSM 9. PLUG & PLAY Communication and OSM MONITOR INFORMATION MONITOR INFORMATION for Model for Model “ “ ” ” Name / Serial Number Inspection Name / Serial Number Inspection 9.1 System Connection 9.1 System Connection This system should be connected as shown below.
  • Page 71 o d o d y t y t h e h e Modify the connector end Modify the connector end c o n c o n n e c t n e c t o r e o r e n d n d by removing the five (5) by removing the five (5) e m e m o v o v n g n g...
  • Page 72 9.4 Operation 9.4 Operation 9.4.1 EDID Data Inspection and Writing to 9.4.1 EDID Data Inspection and Writing to the D-SUB Connector (Analog) the D-SUB Connector (Analog) 1) Connect the EDID data writing unit. 1) Connect the EDID data writing unit. 2) Create a unique directory in the PC, and copy all the files of service tool (Ver.
  • Page 73 5) When the screen (as shown below), move the cursor to [20WGX2 D-SUB] and double click. 5) When the screen (as shown below), move the cursor to [20WGX2 D-SUB] and double click. 6) When 6) When the screen as shown below appears, select [EDID_R the screen as shown below appears, select [EDID_READ] and press the [OK] button.
  • Page 74 7) When 7) When the screen as shown below a the screen as shown below appears, confirm that the correct data ppears, confirm that the correct data are displayed in the columns are displayed in the columns of of EDID EDID DAT DATA CONTENTS and A CONTENTS and Serial informatio...
  • Page 75 10) Equipment is set as Factory mode. 10) Equipment is set as Factory mode. <How to Factory mode> <How to Factory mode> 10-1) Press 10-1) Press “ “ MENU/EXIT MENU/EXIT ” ” button then open OSM menu. button then open OSM menu. 10-2) OSM select to 10-2) OSM select to INFORMATION...
  • Page 76 12) Display 12) Display MONITOR INFORMA MONITOR I NFORMATION TION of the OSM, and confirm that the mod of the OSM, and confirm that the model na el name (20WGX me (20WGX ) and ) and “ “ ” ” serial number have been serial number have been correctly written.
  • Page 77 9.5 EDID Data File 9.5 EDID Data File EDID Data: 20WGX EDID Data: 20WGX   _A.edi (ANALOG)   _A.edi (ANALOG) Note1 Note1 Note2 Note2 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3 Note3...
  • Page 78 Append Appendix Reference Signal ix Reference Signal Timings Timings H active H active Horizontal Horizontal H pluse H pluse H back H front H front H back H total H total V-Video V-Video V active V active Vertical Vertical V pluse V pluse V back V front V front...
  • Page 79 MODE MODE MODE MODE Item Item     Abbreviation Abbreviation MAC 640 × × MAC 832 × × Pixel frequency Pixel frequency fc fc 30.24MHz 30.24MHz 57.28MHz 57.28MHz Horizontal frequency Horizontal frequency fh fh 35.00kHz 35.00kHz 49.73kHz 49.73kHz Line Time total Line Time total 28.57us 28.57us...
  • Page 80 MODE MODE MODE MODE Item Item Abbreviation Abbreviation VGA 720 VGA 720 × × 400 70Hz 70Hz VGA 640 480 60Hz 480 60Hz × × Pixel Pixel frequency frequency fc fc 28.322MHz 28.322MHz 25.175MHz 25.175MHz Horizontal Horizontal frequency frequency fh fh 31.47kHz 31.47kHz 31.47kHz...
  • Page 81 MODE MODE MODE MODE Item Item Abbreviation Abbreviation VESA 800 VESA 800 × × 600 56Hz 56Hz VESA VESA 800 × × 600 60Hz 600 60Hz Pixel Pixel frequency frequency fc fc 36.00MHz 36.00MHz 40.00MHz 40.00MHz Horizontal Horizontal frequency frequency fh fh 35.16kHz 35.16kHz...
  • Page 82 MODE MODE MODE MODE Item Item Abbreviation Abbreviation VESA 1024 VESA 1024 × × 768 60Hz 60Hz VESA VESA 1024 1024 × × 768 70Hz 768 70Hz Pixel Pixel frequency frequency fc fc 65.000MHz 65.000MHz 75.000MHz 75.000MHz Horizontal Horizontal frequency frequency fh fh 48.36kHz...
  • Page 83 MODE MODE MODE MODE Item Item Abbreviation Abbreviation SUN 1152 SUN 1152 × × 900 66Hz 66Hz VESA VESA 1280 1280 × × 960 60Hz 960 60Hz Pixel Pixel frequency frequency fc fc 94.50MHz 94.50MHz 108.00MHz 108.00MHz Horizontal Horizontal frequency frequency fh fh 61.85kHz...
  • Page 84 MODE MODE MODE MODE Item Item Abbreviation Abbreviation VESA 1280 VESA 1280 × × 1024 1024 75Hz 75Hz SUN 1280 1280 × × 1024 76Hz 1024 76Hz Pixel Pixel frequency frequency fc fc 135.00MHz 135.00MHz 135.00MHz 135.00MHz Horizontal Horizontal frequency frequency fh fh 79.98kHz...
  • Page 85 MODE MODE MODE MODE Item Item Abbreviation Abbreviation VESA VESA 1152x864 1152x864 70Hz 70Hz VESA VESA 1280x960 1280x960 75Hz 75Hz Pixel Pixel frequency frequency fc fc 94.50MHz 94.50MHz 129.60MHz 129.60MHz Horizontal Horizontal frequency frequency fh fh 63.851kHz 63.851kHz 75.000kHz 75.000kHz Line Line Time Time total...
  • Page 86 MODE MODE MODE MODE Item Item Mac 1024x768 75Hz Mac 1024x768 75Hz  Abbreviation  Abbreviation Mac 1280x960 75Hz Mac 1280x960 75Hz Pixel frequency Pixel frequency fc fc 80.00MHz 80.00MHz 126.00MHz 126.00MHz Horizontal frequency Horizontal frequency fh fh 60.241kHz 60.241kHz 74.64kHz 74.64kHz Line Time total Line Time total 16.600us...
  • Page 87 Non-int Non-interlaced erlaced PAL Non-inte Non-interlaced rlaced PAL Item Item GTF1024x768 50Hz GTF1024x768 50Hz  Abbreviation  Abbreviation GTF1280x720 50Hz GTF1280x720 50Hz Pixel frequency Pixel frequency fc fc 51.89MHz 51.89MHz 60.47MHz 60.47MHz Horizontal frequency Horizontal frequency fh fh 39.55kHz 39.55kHz 37.05kHz 37.05kHz Line Time total Line Time total 25.28us...
  • Page 88 Non-inte Non-interlaced rlaced PAL Non-inte Non-interlaced rlaced PAL Item Item     Abbreviation Abbreviation GTF640x480 GTF640x480 50Hz 50Hz GTF800x600 50Hz GTF800x600 50Hz fc fc 19.40MHz 19.40MHz 31.15MHz 31.15MHz Pixel frequency Pixel frequency fh fh 24.75kHz 24.75kHz 30.90kHz 30.90kHz Horizontal frequency Horizontal frequency Line Time total Line Time total...
  • Page 89 Mode Mode Mode Mode 1400x1050 60Hz 1400x1050 60Hz  Abbreviation  Abbreviation Item Item 1440X900 75Hz 1440X900 75Hz Reduced Blanking Reduced Blanking fc fc 136.750MHz 136.750MHz 101.000MHz 101.000MHz Pixel frequency Pixel frequency fh fh 70.635KHz 70.635KHz 64.744KHz 64.744KHz Horizontal frequency Horizontal frequency Line Time total Line Time total 14.157us...
  • Page 90 Mode Mode Mode Mode Item Item  Abbreviation  Abbreviation VESA 1680X1050 60Hz VESA 1680X1050 60Hz 1280X768 60Hz 1280X768 60Hz fc fc 146.25MHz 146.25MHz 79.5MHz 79.5MHz Pixel frequency Pixel frequency Horizontal frequency Horizontal frequency fh fh 65.290kHz 65.290kHz 47.776kHz 47.776kHz Line Time total Line Time total 15.316us 15.316us...
  • Page 91 MODE MODE  Abbreviation  Abbreviation Item Item 1280X720 60Hz (CVT) 1280X720 60Hz (CVT) Pixel frequency Pixel frequency 74.50MHz 74.50MHz 44.772kHz 44.772kHz Horizontal frequency Horizontal frequency 22.36us 22.36us 1664CLK 1664CLK Line Time total Line Time total 17.181us 17.181us 1280CLK 1280CLK Horizontal active display Horizontal active display 1.718us 1.718us...
  • Page 92 R R O O B B L L E E S S O O O O I I N N G G A A B B L L E E O O F F C C O O N N E E N N S S Page Page 1.
  • Page 93 1. No Display of Screen (Screen is Black, Color of LED is Amber) 1. No Display of Screen (Screen is Black, Color of LED is Amber) Does OSM Does OSM di displa splay when you push y when you push N N G G Proceed "5.
  • Page 94 2. Nothing Display on Screen (Screen i 2. Nothing Display on Screen (Screen is Black, C s Black, Color of olor of LED is Blue) LED is Blue) Is backlight turned on? Is backlight turned on? N N G G Refer "3.
  • Page 95 Continue Continue Fa ilure ilure point point Check the 3.3 V pow er are suppl Check the 3.3 V pow er are supplied on ied on Check if the voltage on I307, Check if the voltage on I307, N N G G N N G G I307 pin 2, the 1.8V power are supplied on I307 pin 2, the 1.8V power are supplied on...
  • Page 96 3. Checking the Back Light Unit 3. Checking the Back Light Unit Failure point Failure point Check the BKLT_EN Check the BKLT_EN si g nal si g nal of the of the Is a "H" l Is a "H" level being output in the TTL level evel being output in the TTL level N N G G rectangle input...
  • Page 97 4. Abnormal Screen 4. Abnormal Screen Failure point Failure point Che ck the R ck the R , G, B video signal , G, B video signal from from N N G G computer input computer input on D-Su on D-Su b R, G, B b R, G, B 1) No R, G and B video signal output f 1) No R, G a...
  • Page 98 5. Abnormal OSM Display 5. Abnormal OSM Display P  P  5.1 OSD Adjust  5.1 OSD Adjust  r oblem roblem Failure Point Failure Point Chec Chec k the k the input input TTL level TTL level whe whe ther was changed ther was changed N N G G 1) Pri...
  • Page 99 6. Abnormal Plug and 6. Abnormal Plug and Play Operation Play Operation 6.1 Abnormal DDC2 (D-SUB) 6.1 Abnormal DDC2 (D-SUB) Failure point Failure point Co nfirm the output of nfirm the output of serial data on I serial data on I303 pin 5 303 pin 5 N N G G synchronize SCLK at TTL level.
  • Page 100 7. Checking the Inte 7. Checking the Interface C rface Circuit of ircuit of Sync S Sync Signal ignal 7.1 Checking the 7.1 Checking the C  C  o ntrol  ontrol  C  C  i rcuit of  ircuit of  H  H  o rizontal  orizontal ...
  • Page 101 8. Checking the Resolution Change IC Movement 8. Checking the Resolution Change IC Movement Proceed "9. Checking the D Proceed "9. Checking the D C/DC C/DC converter ci converter circuit rcuit" " Is Is there +3.3V supply on I307 3V3 powe there +3.3V supply on I307 3V3 powe r pi r pins ns N N G G...
  • Page 102 9. Checking the DC/DC Converter Circuit 9. Checking the DC/DC Converter Circuit Print Printed wire broke between P3 ed wire broke between P3 03 pin 3, 4, 03 pin 3, 4, 5 and 5 and N N G G Che ck if ck if the 5V is output fr the 5V is output from P om P 303 p...
  • Page 103 10. Power Board - No Power ON 10. Power Board - No Power ON Check output voltage +5V is right or not Check output voltage +5V is right or not N N G G I I t i t is s n n o o t p t po o w w e e r b r b o o a a rd rd p p r r o o b b le le m m .
  • Page 104 1 1 1. Check the 1. Check the USB Hub Circuit USB Hub Circuit 11.1 HUB is 11.1 HUB is n n o  o  t   t  R  R  e congnize econgnize Failure point Failure point Is a cable with the host PC connected Is a cable with the host PC connected USB cable disconnection USB cable disconnection...
  • Page 105 11.2 Connection 11.2 Connection  pparatus is  pparatus is n n o  o  t   t  R  R  e cognize ecognize Is it aware of the USB Is it aware of the USB hub in hub in Proceed section 12.1 "HUB isn't recognize" Proceed section 12.1 "HUB isn't recognize"...
  • Page 106 1 1 1.3 1.3 Con Connec nection tion  pparatus does  pparatus does n n o  o  t   t  W  W  o rk  ork  “ “ Is it aware of the USB hub in Is it aware of the USB hub in N N G G P P r r o o c c e e e e d d 12.1 HUB isn't recognize"...
  • Page 107 1 1 1.4 1.4 Check Check the U the USB IC  SB IC  Is 3.3V supplied to I319 Vcc pin Is 3.3V supplied to I319 Vcc pin Proceed Proceed "9. Check "9. Check the DC/DC the DC/DC 3,7,11,15,19,23,27,33,39,45,55? 3,7,11,15,19,23,27,33,39,45,55? converter circuit" section. converter circuit"...
  • Page 108 C C I I R R C C I I T T D D E E S S C C R R I I I I O O N N A A B B L L E E O O F F C C O O N N E E N N S S Page Page 1.
  • Page 109 1. Interface B B oard and 1. Interface oard and P P anel anel P P ower  ower S S upply upply 1 1 . . 1 1 3 3 0 0 3 3 c c o o n n n n e e c c t t o o r  r  A 5V A 5V po powe...
  • Page 110 6 6 . . M M U U C C ircuit ircuit The sou source rce vol voltag tage fo e for I3 r I325 i 25 is 5V s 5V , a , and t nd the s he sy y ste stem clo m clock fr ck freq eq uen...
  • Page 111 ● ● If there is no h If there is no horiz oriz ontal s ontal sync si ync signal in gnal input. put. ● ● If there is no If there is no vertical sync signal inp vertical sync signal input. ●...
  • Page 112 6 6 . . 3 3 U U s s e e r r o o n n t t r r o o l l 6 6 . . 3 3 . . 1C 1C o o n n t t r r o o l l e e y y s s Action Action MENU/...
  • Page 113 7 7 . . o o w w e e r   r  S S u u p p p p l l y y ( ( i i r r c c u u i i t t d d a a i i g g r r a a m m s s M M A A I I N N B B ) ) 7 7 .
  • Page 114 Power Board Block Diagram Power Board Block Diagram Rec. Rec. Line Line FC FC o o w w e e r   r   24V fo for I r Inve nverte rter  r  Filter  Filter  i i r r c c u u i i t t Outpu tput Re t Rec.
  • Page 115 . . U U S S B B 2 2 . . 0 0 U U B B i i r r c c u u i i t t . . 1 1 B B l l o o c c k k D D i i a a g g r r a a m m ( ( 1 1 ) ) ( ( 2 2 ) ) (5 (5) )
  • Page 116 R R E E L L A A C C E E M M E E N N T T A A R R S S L L I I S S A A B B L L E E O O F F C C O O N N E E N N S S a a g g e e M M o o d d e e l 2 l 20 0 G G X X...
  • Page 117 REPLACEMENT PARTS LIST(For REPLACEMENT P ARTS LIST(For Europe) Europe) The components specified for Model 20WGX The components specified for Model 20WGX For Europe For Europe SYMBOL SYMBOL DESCRIPTION DESCRIPTION (Lite-on Part Number) (Lite-on Part Number) PWB ASSYS PWB ASSYS 0 0 51 5113 1330 3012...
  • Page 118 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lit ite-o e-on P n P ar art Num t Numbe ber) r) 6 6 0 0 4 4 6 6 3 3 7 7 1 1 1 1 5 5 0 0 9 9 5 5 6 6 A A .
  • Page 119 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite- te-on P on P ar art Nu t Numbe mber) r) 3 3 7 7 6 6 6 6 3 3 7 7 1 1 2 2 1 1 0 0 4 4 1 1 6 6 A A .
  • Page 120 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite te-o -on P n P ar art Num t Numbe ber) r) 4 4 7 7 6 6 6 6 3 3 7 7 1 1 2 2 1 1 0 0 4 4 1 1 6 6 A A .
  • Page 121 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lit ite- e-on P on P ar art Nu t Numbe mber) r) 4 4 6 6 6 6 3 3 1 1 1 1 2 2 1 1 0 0 2 2 4 4 5 5 7 7 2 2 A A .
  • Page 122 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite- te-on on art art Num Number ber) ) F F B B 3 3 2 2 7 7 1 1 1 1 0 0 2 2 1 1 7 7 O O R R E E B B E E A A D D B B Y Y 2 2 0 0 1 1 2 2 0 0 9 9 T T 3 3 0 0 0 0 Y Y S S...
  • Page 123 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite- te-on P on P ar art Nu t Numbe mber) r) 6 6 4 4 1 1 2 2 0 0 0 0 1 1 7 7 3 3 D D I I O O D D E E R R L L S S 4 4 1 1 4 4 8 L 8 LL L 3 3 4 4 S S M M D D R R O O M M D D 1 1 7 7...
  • Page 124 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lite ite-on -on art art Num Number ber) ) 3 3 1 1 6 6 6 6 4 4 2 2 2 2 0 0 0 0 0 0 0 0 1 1 2 2 0 0 T T R R A A N N S S I I S S T T O O R R N N N N...
  • Page 125 For Europe For Europe SYMBOL SYMBOL DESC C RI RIP P TION TION (Lit (Lite-on P e-on P art N art Number) umber) R R 8 8 0 0 9 9 6 6 2 2 5 5 3 3 1 1 0 0 7 7 2 2 4 4 2 2 P P 0 0 0 0 R R E E S S .
  • Page 126 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lite ite-on P -on P art N art Num umber ber) ) R R 4 4 3 3 7 7 6 6 2 2 5 5 2 2 1 1 5 5 0 0 2 2 5 5 6 6 R R E E S S .
  • Page 127 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite te-on P -on P ar art Num t Number ber) ) R R 2 2 3 3 6 6 2 2 5 5 3 3 6 6 4 4 9 9 1 1 4 4 2 2 0 0 0 0 R R E E S S .
  • Page 128 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite te-o -on P n P ar art Num t Numbe ber) r) R R 3 3 3 3 9 9 6 6 2 2 5 5 2 2 4 4 7 7 0 0 0 0 5 5 6 6 R R E E S S .
  • Page 129 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lite ite-on P -on P art N art Num umber ber) ) R R 3 3 9 9 6 6 2 2 2 2 1 1 0 0 2 2 0 0 1 1 5 5 7 7 R R E E S S .
  • Page 130 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (Lite- te-on P on P ar art Nu t Numbe mber) r) J J 0 0 3 3 0 0 6 6 7 7 0 0 0 0 0 0 6 6 0 0 0 0 0 0 0 0 J J U U M M E E R R I I R R E E...
  • Page 131 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lit ite- e-on P on P ar art Num t Numbe ber) r) D D 0 0 2 2 A A 7 7 1 1 1 1 6 6 2 2 3 3 0 0 0 0 2 2 0 0 A A S S R R E E M M A A...
  • Page 132 For Europe For Europe SYMBOL SYMBOL D D E E S S R R I I T T I I O O N N (L (Lit ite- e-on P on P art N art Numb umber er) ) 7 7 7 7 4 4 7 7 1 1 1 1 7 7 0 0 0 0 0 0 A A B B R R A A E E T T E E S S A A B B R R A A...
  • Page 133 For Europe For Europe SYMBOL SYMBOL DESC SC RI RIP P TIO TION N (Lite-on (Lite-on art art Numbe Number) r) P P AC AC K K IN ING G AS ASSY 1 1 P P 1 1 1 1 7 7 7 7 4 4 9 9 2 2 0 0 5 5 9 9 4 4 8 8 P P 0 0 A A C AR R T T O O N N _ _ N N E E C _ C _ U U 2 2 0 0 B B N N _ _ 2 2 0 0 W W G G X X 2 2 (B (B- - B B K K ) ) _ _ 7 7 2 2 0 0 S S E E T T S S...
  • Page 134 NEC-20WGX NEC-20WGX Block Diagram Block Diagram 12VDC 12VDC PANEL 20" LPL LM201WE2-SLA1 PANEL 20" LPL LM201WE2-SLA1 PTB-1621 PTB-1621 Power Board  Power Board   F  F  F  F  O  O  -  -  N  N  O  O  C  C  -  -  D  D  U...
  • Page 135 MODEL LCD 20WGX MODEL LCD 20WGX SCHEMA SCHEMATIC DIAGRAM - InputsPWR - TIC DIAGRAM - InputsPWR - Dsub/DVI (1/5) Dsub/DVI (1/5) source select multip source select multip lexer fo lexer fo r r LPL panel only. LPL panel only. R489 R489 R488 R488...
  • Page 136 1st.K4S161622H-UC55, 183MHz, Samsung    1    1    1    1    4    4    4    4 FB332 FB332 0.56uF 0.56uF    C    C    C    C NEC-C20MTL--6814200500P NEC-C20MTL--6814200500P R384 R384 2nd.HY57V161610ETP-55,183MHz, 2nd.HY57V161610ETP-55,183MHz, Hynix Hynix    V    V 3th.M12L16161A-5.5T, 183MHz, ESMT 3th.M12L16161A-5.5T, 183MHz, ESMT    5    5    F    F    2    2...
  • Page 137 12V for LG panel    1    1    1    1    4    4    4    4 FB332 FB332    C    C    C    C 0.56uF 0.56uF NEC-C20MTL--6814200500P NEC-C20MTL--6814200500P R384 R384 2nd.HY57V161610ETP-55,183MHz, 2nd.HY57V161610ETP-55,183MHz, Hynix Hynix    V    V 3th.M12L16161A-5.5T, 183MHz, ESMT 3th.M12L16161A-5.5T, 183MHz, ESMT    5    5    F    F    2    2...
  • Page 138 MODEL LCD 20WGX MODEL LCD 20WGX SCHEMATIC DIAGRAM - USB (4/5) SCHEMATIC DIAGRAM - USB (4/5) I327 I327 AO4407 AO4407 +U5V +U5V +U3V3P +U3V3P +U5V +U5V FB344 FB344 FB343 FB343 I317 I317 PBY201209T-170Y-S PBY201209T-170Y-S PBY201209T-170Y-S PBY201209T-170Y-S VBUS1 VBUS1 +U3V3 +U3V3 VOUT VOUT I318...
  • Page 139 MODEL LCD 20WGX MODEL LCD 20WGX SCHEMATIC SCHEMATIC DIAGRAM - DIAGRAM - Power Power (5/5) (5/5) A3963WV2-A3P A3963WV2-A3P L801 L801 ER2819 ER2819 D807 D807 R868 R868 R801 R801 C811 C811 C814 C814        5        5        4        4        6        6 P801 P801 C806 C806 T803...
  • Page 140 A A C C K K I I N N G G S S E E C C I I F F I I C C A A I I O O N N A A B B L L E E O O F F C C O O N N E E N N S S a a g g e e B B ersion ersion ............................
  • Page 141 11- 2 11- 2...
  • Page 142 Liteon Liteon Item Item Description Description e e r r . . a a b b i i n n e e t t o o l l o o r   r   ar art t Nu Numb mber  er ...
  • Page 143 Revision History Revision History Revision Revision Revision Revision New Issue (1st Edition) New Issue (1st Edition) 2006/03 2006/03 12-1 12-1...

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