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Dell E1909W Service Manual

Dell E1909W Service Manual

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Service Manual
LCD Monitor E1909W
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Summary of Contents for Dell E1909W

  • Page 1: Service Manual

    Service Manual Service Manual LCD Monitor E1909W...
  • Page 2 Copyright 2007 InnoLux Display. Corp. Ltd All Rights Reserved This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of Foxconn Tech. Corp. Ltd. Dell E1909 Service Manual...
  • Page 3: Table Of Contents

    NNER ONNECTOR SSIGNMENT ............................... 16 ARTS SSIGNMENTS CHAPTER 4- DISASSEMBLY & ASSEMBLY ..........................21 ................................21 XPLODED IAGRAM E1909W D ............................. 22 ISASSEMBLY LOCK .................................. 23 SSEMBLY LOCK CHAPTER 5- TEST AND ADJUSTMENT ............................24 ..............................24 UNCTION KEY EFINITIONS OSD C ..................................
  • Page 4: Chapter 1- Precautions & Safety Notices

    Service Manual Chapter 1- PRECAUTIONS & SAFETY NOTICES SAFETY PRECAUTIONS This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user. WARNINGS: ...
  • Page 5: Chapter 2- Service Tools & Equipment Required

    Service Manual Chapter 2- SERVICE TOOLS & EQUIPMENT REQUIRED 1. SIGNAL GENERATOR 2. MULTIMETER 3. SCREW DRIVER 4. OSCILLOSCOPE 5. Soldering IRON 6. SOLDER (Lead free, RoHS compliance) 7. Color Analyzer 8. Fox_VISP_Programmer 9. Fox_VEDID_Programmer...
  • Page 6: Chapter 3- Circuit Theory

    Service Manual Chapter 3- CIRCUIT THEORY Block Diagram There are 4pcs PCBA in this monitor, one is power& inverter board which is a single layer board, one is interface board , one is keypad which is OSD control. The system function block diagram as below This PWA is included switching power supplier, inverter for CCFL and interface board.(fig.1) INVERTER POWER...
  • Page 7 Service Manual Fig.2...
  • Page 8: Electronic Circuit Theory

    Service Manual Electronic Circuit Theory 2.1. Inverter PWM circuit Inverter Control circuit:(fig.2.1) Fig.2.1 DC_5V through R7 and C2 will provide power for U1 on the pin11. EN-ON/OFF voltage signal coming from scalar which is on IF BD will enable U1 to work. During start up,appling a voltage level greater than 2V to ENA(pin16)enables the IC.
  • Page 9 Service Manual devider(C1/C15/C16/C17) to sense the output voltage.The divide-down voltage signal is sent to the IC Pin1(VSEN) ,thus regulating the output voltage. If a CCFL is removed, fails or damaged during normal operation, CCFL current is no longer sensed and the voltage on ISEN pin drops. The voltage at the SSTCMP(pin2)rises rapidly because there is no current feedback at ISEN(pin14).When the voltage at SSTCMP reaches a threshold of approximately 2V and ISEN is less than 0.7V,a current source charges the capacitor(C3) connected to TIMER(pin12).Once the voltage level at the TIMER pin reaches a threshold of approximately 3V,the drive outputs shut down and...
  • Page 10 Service Manual D850 is a rectifier in which there are 4 build-in diodes, inverting AC to DC. C854 is used to smooth the wave from rectifier. R852 is a fuse resistor to protect the following circuit when inrush current is too large. U850 is a highly integrated PWM controller. Typical start-up current for U850 is only 20 uA, R841,R842 and R843 are serial circuit to limit current flow.
  • Page 11 Service Manual D854&D855 are used to rectify the inducted current. C862 are used to store energy when current is reversed. The parts including C863 is used to smooth the current waves that are from D854&D855, and then 24V voltage is supplied. D856&D857 are used to rectify the inducted current.
  • Page 12: Factory Preset Timing Table

    Service Manual - Button “Menu” on front bezel connects to U105 (TSUM5PEHJ-LF-2) #50 through CN104 #1, U105 #50 Voltage is defined as “Menu”. - Button “SELECT” on front bezel connects to U105 (TSUM5PEHJ-LF-2) #122 through CN104 #4, U105 #122 Voltage is defined as “SELECT”. - LED Indicator on Front Bezel a.
  • Page 13 Service Manual and send control signals(at 73,109pin) to on CCFL and switch 5.0v to panel module, at the same time,U105 make the VGA/DVI cable input signal source display normal on panel if the VGA/DVI cable input signal is active If power ON, U105 #123 (LED_blue) will send out low potential, and then LED blue on. If power saveing, U105 #124 (LED_Amber) will send out low potential, and then LED Amber on.
  • Page 14: D-Sub Connector Pin Assignment

    Service Manual Power supply for panel+5V V Signals Valid data (Digital RGB, HS, VS, DE, CLOCK) Power supply for backlight T1(ms) T2 (ms) T3 (ms) T4 (ms) T5 (ms) T6 (ms) T7(ms) 0.3~10 0.0~50 >500 >100 0.0~50 >1000 0.5~10 0.0~50 200~ 200~ 0.5~50...
  • Page 15 Service Manual GND_LVDS LVDS Ground RXE3+ LVDS signal of even channel 3(-) RXE3- LVDS signal of even channel 3(+) RXEC+ LVDS signal of even channel clock (+) RXEC- LVDS signal of even channel clock (-) RXE2+ LVDS signal of even channel 2(+) RXE2- LVDS signal of even channel 2(-) GND_LVDS...
  • Page 16: Key Parts Pin Assignments

    Service Manual 8. Key Parts Pin Assignments U105(TSUM5PEHJ-LF-2)
  • Page 17 Service Manual...
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  • Page 19 Service Manual 8.1 U108 (Serial Flash) Symbol Description The device is enabled by a high to low transition on CE#. CE# must remain low for the duration of any command sequence. To transfer commands, addresses, or data serially into the device. The write protect (WP#) pin is used to enable/disable BPL bit in the status register.
  • Page 20 Service Manual 8.3 U850 (LD7552B, PWM Power Controller) Symbol Description Ground COMP Voltage feedback pin,by connecting a photo-coupler to close the control loop and achieve the regulation Supply voltage pin This pin is to program the switching frequency. By connecting a resistor to ground to set the switching frequency.
  • Page 21: Chapter 4- Disassembly & Assembly

    Service Manual Chapter 4- Disassembly & Assembly 1. Exploded Diagram...
  • Page 22: E1909W Disassembly Block

    Service Manual E1909W Disassembly Block Note: 1. The arrows point out the direction of disassembly.
  • Page 23: Assembly Block

    Service Manual Assembly Block Note: 1. The arrows point out the direction of assembly...
  • Page 24: Chapter 5- Test And Adjustment

    Service Manual Chapter 5- TEST AND ADJUSTMENT 1. Function key Definitions Power: On/Off, includes power indicator and Power ICON Blue - Active On Power Switch with power LED indicator Amber- DPMS Front Panel Controls 1. Menu: Call out OSD Menu and choose 2.
  • Page 25: Osd Control

    Service Manual OSD Control ñ ç...
  • Page 26: Factory Mode Introduction

    Service Manual Factory Mode Introduction With signal input, press “Power” button to turn off the monitor. Press “Menu” and “Auto/Plus” buttons together, and then press “Power” button to turn on the monitor. After power on, press “Menu” button to call out Main Menu (Fig.9).
  • Page 27: Burn-In Pattern

    Color Temp: The R, G, B of Blue Preset (9300K), Red Preset (5700K) and Normal Preset (6500K) are generated from scaling chip’s back-end white-balance program. Time: Turn-on time of the panel. DEBUG: Debug tool of scale IC U104. Dell panel P/N LCD supplier Panel Supplier P/N...
  • Page 28: Auto Color Balance (Automatically Calibrate Chip Adc Parameter By Using Chip Internal Dac.)

    Service Manual method as followe: plugging in the VGA/DVI cable, press “Menu” button to call out OSD Main Menu, Press “Plus Key”to select“Other Settings Menu”then pop submenu and choose Factory reset. Auto Color Balance (Automatically calibrate chip ADC parameter by using chip internal DAC.) 5.1 If it is a new-built set, press “Auto/Plus”...
  • Page 29: After Repair, To Ensure The Quality You Should Do The Following Test And Adjustment

    Service Manual Fig 11 The detailed reprogramming procedures will be described in ISP User's Guide. After repair, to ensure the quality you should do the following test and adjustment.
  • Page 30 Service Manual Item Content Equipment Test OSD 1.Signal is set as 1440×900@60Hz under General-1 Chroma function Signal Generator 2. LCM button are from left to right, checking whether each single function key and compound function key can be worked. Contrast Check 1.
  • Page 31: Chapter 6- Trouble Shooting

    Service Manual Chapter 6- TROUBLE SHOOTING Common Acknowledge  If you change the M/B, be sure that the U103,U201 and U108 these three components also changed to the new M/B because there was program inside. If not, please re-write EDID or upload firmware into serial flash(U108).
  • Page 32 Service Manual Power(include IF +5Vand +3.3V) supply normal but LED off and no display Is the key function OK? Press power key to DC on the monitor, if display ok the process is end, if no display see the no backlight process Is the frequency 14.318MHz at Change crystal X101 #127,#128 of IF Board U105?
  • Page 33 Service Manual Power (include IF +5Vand +3.3V) supply and display normal but LED Amber Is Power LED Amber? Do the Hsync. & Vsync. Signals exist Insert VGA Cable correctly in CN102 #13& #14 separately when select VGA mode by OSD? Do the Hsync.
  • Page 34: Backlight Can't Be Turned On

    Service Manual 4.Power (include IF +5V and +3.3V) supply normal ,key function OK, but backlight can’t be turned on Backlight cannot be turned on, is the Is the CN853 on-off control signal come from IF ok? inserted CN103 OK? Is the on-off control signal #109 of U105 high-low convertible when DC on/off Is the frequency 14.318MHz at Is the voltage...
  • Page 35: N O Picture B Acklight On

    Service Manual 5. Backlight on, key function and LED accurate indication ok but no picture Backlight on , key function and LED accurate indication ok but no picture IS the display is white and cannot Check DC 5.0V on Is the panel enable display OSD when press key? CN101#1, #2 signal at 73# of...
  • Page 36: At 32-Gray Scale Pattern, Color Lost In Some Scale

    6.At 32-gray scale pattern, color lost in some scale Color lost in some scale at 32-gray scale pattern Re-insert the FFC Cable Change FFC Cable Change U105 Chapter 7- RECOMMENDED PART LIST Dell V1909WFPf Critical Components List Content Description Supplier Usage Leadtime Capacity IC LD7552BPS SOP8 Leadtrend)ROHS...
  • Page 37: Attachment 1- Bill Of Material

    Service Manual CAP SEK 100uF/450V M,105 CF 18x40(2.5) SU'SCON CAP SEK 100uF/450V M,105 CF 18x40(2.5) ELITE 410500059290R XSTR AP2761I-A N-CH TO-220CFM ADVANCED P APEC 410050103050R XSTR FMA09N65GX N-CH TO-220F(FUJI) RoHS FUJI 410050057280R XSTR STP8NK80ZFP N-CH TO220FP (ST) PCB,P/I ,1/OSP /CEM1/16,LE119E6-812 ROHS TATCHUN 491531400800R PCB,P/I ,1/OSP /CEM1/16,LE119E6-812 ROHS...
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  • Page 40 Service Manual 2. power board BOM ITEM Description Supplier Usage Location 791711400800R PCBA,P/I BOARD W/O SPK,LE19E6-812 ROHS 10 430637020030R WFR. 2P P=3.5mm 90°W/LOCK,RoHS CVILUX,FCN,FOXCONN, 4 PC CN1,CN2,CN3,CN4, 20 440149000400R SKT AC 10A/250V U/C/V,CDJ-3(E4 )-BT3.6-0 TECX, 1 PC CN850, 30 430300801650R HRN ASS'Y 8P 130mm UL1007 24 AWG ROHS FOXCONN,HEIGHTEN,JVE, 1 PC...
  • Page 41 Service Manual 190 411090050450R SCHTKY SR5150PT-F 150V/5A DO-201AD (CHEN CHENMKO, 0 PC 200 426000091160R XFMR SW DIP EEL22 P4 800uH SPW-116 ROHS DARFON,FOXCONN,HUALON,LISHIN, 1 PC 210 426000091150R XFMR SW DIP ER28 TP4 550uH SPW-115 ROHS FOXCONN,FRONTIER,LISHIN,MEIKAI, 1 PC T850, 220 412140002380R IC LTV817M-PR VDE (LITE-ON) P=10mm RoHS LITEON, 1 PC I850,...
  • Page 42 Service Manual 320 410080003290R XSTR AP4575GM N&P SO-8(APEC)ROHS 2 PC Q6,Q7, 320 410080003430R XSTR P5506NVG N&P SOP-8(NIKO-SEM)ROHS NIKO, 0 PC 330 410070010240R XSTR MMBT4401 NPN SOT23(FAIRCHILD)RoHS FAIRCHILD, 1 PC Q851, 330 410070010420R XSTR MMBT4401 NPN SOT23(PANJIT)RoHS PANJIT, 0 PC 330 410070010210R XSTR PMBT4401 NPN SOT23(PHILIPS)RoHS PHILIPS, 0 PC 340 412000628810R IC LD7552BPS SOP8 Leadtrend)ROHS...
  • Page 43 506120007000R BAG PLASTIC L480xW610xT0.05mm(PRINTED) 506120007100R BAG PLASTIC L600xW400xT0.05mm(PRINTED) 506020023800R CARTON,DELL(WWW), LE19E6 506060009400R cushion-top,LE19E6 506060009410R cushion-bottom,LE19E6 506340004700R LABEL BLANK 101X50mm DELL EMEA CARTON 506380002622R TAPE, WRAPPING TYPE PRINTED(DELL), BLACK 0.00139 713000096701R ASSY PACK,40STD,LE19E6 713000096700R ASSY PACK,20STD,LE19E6 713000096703R ASSY PACK,AIR/JAPAN CARGO(20STD),LE19E6 713000096704R...
  • Page 44 Service Manual 714030017200R front-bezel-assy,LE19E6 MMP, 714050016200R back-cover-assy,LE19E6 MMP, 714083870000R ASSY,PANEL(AUO)W/O SPK,LE19E6-712(V1909W 2008031 Phant.ite ITEM Description Supplier Usage 713000096700R ASSY PACK,20STD,LE19E6 506432003600R SLIP SHEET,L1143xW1076xH75mm, LE19E6 SUNSTREAM, 506037009200R CARDBOARD,COVER,L1143xW1076xH100xT3mm,LE 506039008800R CORNER PAPER 1060x50x50xT3mm LE1963 506431000300R FILM,PE 500mmx900M ROHS 506120400100R BAG AIR DUNNAGE 2000x1000mmLE1X03 ROHS SISUN, 506380002612R TAPE,WRAPPING TYPE,50Mx82mm...
  • Page 45: Attachment 2- Schematic

    Service Manual 631102090762R LCP 19" M190PW01-V0B(AUO)RoHS 701000008600R chassis-for-cmo-assy,LE19E6 MMP, 501110100110R Dell-logo-KW265,LE19E6 DEMETER, 505040208700R chassis-mylar,LE19E6 505040208710R panel-mylar,LE19E6 509000001000R BOLT,#4-40x12.5,Ni ROHS 509016304200R SCREW,I,CROSS,M3*4,Zn-CcROHS 509016306200R SCREW,I,CROSS,M3*6,Zn-Cc SCREW,P,CROSS,W/WAS,M3*6,Zn-Cc 430303001680R HRN LVDS FFC 30P 160mm P-TWO, 430300801920R HRN ASSY 2x4P to8P 345mm UL1571#28 V1909 FOXCONN,HEIGHTEN,JVE,...
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  • Page 50 Service Manual inverter board schematic power board schematic...

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