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Dell S1909WXf Service Manual

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Service Manual

Service Manual
LCD Monitor S1909WXf
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Summary of Contents for Dell S1909WXf

  • Page 1: Service Manual

    Service Manual Service Manual LCD Monitor S1909WXf - 0 -...
  • 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 S1909W Service Manual...

  • Page 3: Table Of Contents

    Service Manual Table of Contents CHAPTER 1- PRECAUTIONS & SAFETY NOTICES ......................3 SAFETY PRECAUTIONS............................3 PRODUCT SAFETY NOTICE..........................3 SERVICE NOTES..............................3 CHAPTER 2- SERVICE TOOLS & EQUIPMENT REQUIRED ....................4 CHAPTER 3- CIRCUIT THEORY............................5 ..............................5 LOCK IAGRAM ..........................7 LECTRONIC IRCUIT HEORY FACTORY PRESET TIMING TABLE ........................13 ...........................13 OWER EQUENCY...

  • 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.

  • 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 2pcs PCBA in this monitor, one is power& inverter&Audio board which is a single layer 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 Brightness Control...

  • Page 7: Electronic Circuit Theory

    Service Manual Electronic Circuit Theory 2.1 Inverter PWM circuit 2.1.1) Inverter Control circuit :( fig.2) Fig.2 DC_5V through R1 and C1 will provide power for U1 on the pin2 (VDDA). EN-ON/OFF voltage signal coming from scalar which is on IF BD will enable U1 to work. This applies a level greater than approximately 2V to pin8 (ENA) enables the IC, A voltage less than 1V will disable the IC.
  • Page 8 Service Manual 2.1.2) Output Circuit and Protection Circuit :( fig.3) fig.3 The transformer (T1/T2) secondary winding leakage inductance and output capacitance (C31/C32) forms a lower pass filter, which converts the square-wave driving signal into a sinusoidal output voltage signal for CCFL. The over-voltage protection feature is implemented by using an external capacitor divider (C31/C32, C33/C34) or resistor divider (R20/R21, R22/R24) to sense the output voltage.
  • Page 9 Service Manual 2.2 Power PWM circuit 2.2.1) Block diagram :( fig.4) EMI Filter Rectifier and Isolation power Rectifier and filter Inverter circuit filter transformer PWM controller Switching element Rectifier and filter LDO regulator Feedback Isolation Fig.4 2.2.2) AC Input and EMI Filter :( fig.5) fig.5 CN850 is a connector for connecting AC Power.
  • Page 10 Service Manual fig.6 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 U830 is only 8uA;...
  • Page 11 Service Manual fig.7 D854 is used to rectify the inducted current. R860 and C861 are used to store energy when current is reversed. The parts including C862, C865, C864 and L853 are used to smooth the current waves that are from D854, and then 16V voltage is supplied. D856 is used to rectify the inducted current.
  • Page 12 Service Manual ZD109 is ESD protector. - U102 +3.3V is supplied by PC via CN101#9 with D104 and ZD101 for ESD protection, or supplied by Monitor self via D104. - U102 is an EEPROM IC which is memory and EDID data saved in it. 2.3.2 DVI CAPTURE - Differential Signal input RX0+,RX0-,RX1+,RX1-,RX2+,RX2-,RXC+,RXC- through CN102 #18,#17,#10,#9,#2,#1,#23,#24 via R130,R131,R132,R133,R134,R135,R137,R138 enter...

  • Page 13: Factory Preset Timing Table

    Service Manual - +1.8V is generated from Regulator U108 which is supplied byU103-3.3V through C143 filtering.The1.8V via FB105 supplies to U104. 3. FACTORY PRESET TIMING TABLE Standard Resolution Horizontal Frequency Vertical Frequency (KHz) (Hz) 640 x 480 31.469 59.940 640 x 480 37.500 75.000 800 x 600...

  • 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) SPEC 0.3~10 0.0~50 >500 >200 0.0~50 >1000 (Samsung) SPEC (LPL) 0.5~10 0.01~50...
  • 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 8.1 U104(TSUM56BWHK-LF-2)
  • Page 17 Service Manual...
  • Page 18 Service Manual...
  • Page 19 Service Manual 8.2 U105 (Serial Flash) Symbol Description The device is enabled by a high to low transition on 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 U830 (SG5841, PWM Power Controller) Symbol Description Ground Feedback, the FB pin provides the information of the regulation. The PWM duty cycle is controlled by FB Start-up current input Reference setting, typical voltage 1.3V N.C.(not connected) SENSE Current sense for over current protection Power supply GATE...

  • Page 21: Chapter 4- Disassembly & Assembly

    Service Manual Chapter 4- Disassembly & Assembly 1. Exploded Diagram...

  • Page 22: S1909Wfp F Disassembly Block

    Service Manual 2. S1909WX Disassembly Block Note: 1. The arrows point out the direction of disassembly. 2.The foil which sticked on the panel need re-sticked on original position after sample repaired.

  • Page 23: Assembly Block

    Service Manual 3. S1909WX Assembly Block shield EMI LP2207*5 Note: 1. The arrows point out the direction of assembly 2. After repair, the foil need re-sticked on original position on the panel.

  • Page 24: Chapter 5- Test And Adjustment

    Service Manual Chapter 5- TEST AND ADJUSTMENT 1. Function key Definitions POWER Every bottom function defining Power Switch with power LED indicator Power: On/Off, includes power indicator and Power ICON white- Active On Amber- DPMS Panel Controls 1. Menu: When OSD isn’t shown on screen, press [MENU] to enter OSD interface ,When OSD displays, press [MENU] to exit OSD 2.

  • Page 25: Osd Control

    Service Manual ● AUTO ADJUST Execute the AUTO ADJUST function ● Select the input source Select Input OSD Control OSD Control First Second Third Default VGA Input DVI Input Brightness Brightness Contrast Auto Adjust Auto Select Input Source DVI-D Input Color Format YPbPr Graphics Mode Selection...
  • Page 26 Service Manual Fig9 Fig10 Back: Exit from Factory mode and back to NO OSD Status. Panel: The current-setting panel is highlighted. Auto Color: Automatically calibrate chip ADC parameters by using internal DAC. Burn In: Enable or disable the Burn-in mode by choosing ON or OFF. Reset Timer: Reset the “Turn-on time”...

  • 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 Dell P/N Samsung 19”W...

  • Page 28: 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 29 Service Manual Item Content Equipment Test OSD 1.Signal is set as 1440×900@60Hz under General-1 Chroma 2. LCM button are from left to right, checking whether each function Signal Generator single function key and compound function key can be worked. Contrast Check 1. Set input mode to 1440×900@60Hz Chroma Signal Generator 2.

  • Page 30: Chapter 6- Trouble Shooting

    Service Manual Chapter 6- TROUBLE SHOOTING Common Acknowledge If you change the M/B, be sure that the U101, U102 and U105 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 (U105) via VGA Cable.
  • Page 31 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 #32 of Change crystal X101 IF Board U104?
  • Page 32 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 CN101 #13& #14 separately when select VGA mode by OSD? Do the Hsync.

  • Page 33: Backlight Can

    Service Manual Power (include IF +5Vand +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 #20 of U104 high-low convertible when DC on/off Is the frequency 14.318MHz at #32 Is the...
  • Page 34 Service Manual 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? CN106#1, #2, #3 signal at 75# of...

  • Page 35: At 32-Gray Scale Pattern, Color Lost In Some Scale

    Service Manual 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 U104...

  • Page 36: Chapter 7- Recommended Part List

    Service Manual Chapter 7- RECOMMENDED PART LIST Component Component Category Location Supplier Suppiler PN Object description Purpose Type number Function Power IC U830 412000582020R SG5841JSZ IC SG5841JSZ SOP8(SG)RoHS Control for Power OZ9937GN SOP16(O2 Function Inverter IC 412000531630R OZ9937GN Control MICRO)ROHS for Inverter FOXCONN 2MVLA1905-007A...

  • Page 37: Attachment 1- Bill Of Material

    Service Manual ATTACHMENT 1- Bill of Material 1. Interface board BOM 20080122 ITEM Revision Description Supplier Usage Location 791431300800R PCBA,I/F BOARD,W/O SPK LE19D5-812 ROHS 629030015700R PROGRAM,W/O SPK LE19D5-812 ROHS PCBA,I/F BOARD,W/O SPK,MI LE19D5-812 791431320800R PCBA,I/F BOARD,W/O SPK,SMT LE19D5-812 791431340800R 641120000010R HDCP RECEIVE DEVICE KEY DCP LLC, 511130001200R...
  • Page 38 Service Manual R113,R115,R116,R143, 414916010250R RES SMD (0603) 1KΩ J,RT RoHS REV:A TA-I,WALSIN,YAGEO, R155,R156,R167,R168 ,R175, R111,R119,R120,R123, R128,R129,R136,R151, R152,R157,R158,R160, 414916010350R RES SMD (0603) 10KΩ J,RT RoHS TA-I,WALSIN,YAGEO, R161,R164,R172,R174, R178,R179,R181,R182, R183,R184, 414918010450R RES SMD (0402)100KΩ J,RT,RoHS TA-I,WALSIN,YAGEO, R147, 414916027350R RES SMD (0603) 27KΩ J,RT RoHS TA-I,WALSIN,YAGEO, R150, 414916022250R...
  • Page 39 Service Manual ZENER 6.2V MMSZ5234B 411130962950R PANJIT, SOD-123(PANJIT)RoH 412000330020R IC LD1117AL-1.8V-A SOT223(UTC) RoHS UTC, U108, 412000330130R IC AP1117E18LA 1.8V (ANACHIP) SOT223-3L ANACHIP, 412000330830R IC AS1117L-1.8/TR-LF,SOT223(A1 SEMI)RoHS A1SEMI, 412000330550R IC AME1117ECGTZ 1.8V,SOT223(AM E)RoHS AME, 419311020010R C SMD(0402) X7R 1000PF/50V K,RoHS MURATA,TDK,WALSIN,YAGEO, C170,C171, 414916010050R RES SMD (0603) 10Ω...
  • Page 40 Service Manual FUTABA,QUEENMAO,TZAI 415502208521R RES WW NKNP 2W 0.2Ω J,VF7.5 MINI ROHS R859, YUAN, FUTABA,QUEENMAO,TZAI 415350100550R RES MOF 2W 10Ω J,MINI,HK15, RoHS R860,R869, YUAN, 432009401000R NTC 8Ω 5A +-20% 15ψ P=7.5mm,RoHS THINKING, RT850, DARFON,FOXCONN, 426000090600R XFMR SW,DIP EEL19 SPW-060,RoHS T1,T2, FRONTIER,LISHIN, 426000090810R XFMR SW DIP ERL28 PC40 500uH SPW-081,Ro...
  • Page 41 Service Manual DARFON,TDK,WALSIN, 419311020060R C SMD(0603) X7R 1000PF/50V K RoHS C2,C3, YAGEO, 419301010560R C SMD(0603) NPO 100PF/50V J RoHS DARFON,TDK,WALSIN,YAGEO C837, 419311030070R C SMD(0805) X7R 0.01uF/50V K RoHS DARFON,TDK,WALSIN,YAGEO C839,C867, DARFON,MURATA, 419311040070R C SMD(0805) X7R 0.1uF/50V K RoHS REV:A C872 , C7, C23,C24, TDK,WALSIN,YAGEO, 419314733060R C SMD(0603) X7R 0.047uF/25V K RoHS...
  • Page 42 Service Manual 511110001104R SEAL-GLUE,3611,(EURO) EURO, 511110001100R SEAL-GLUE,NE8800K,(FUJI) FUJI, 511110000700R HERAEUS SMT-ADHESIVE,PD955PY(TAMURA) D-TEK,TAMURA, 419314720070R C SMD(0805) X7R 4700PF/50V K ROHS DARFON,TDK,WALSIN,YAGEO, C35, 414908047050R RES SMD (0805) 47Ω J,RT RoHS TA-I,WALSIN,YAGEO, R835, 414904330110R RES SMD (1206) 3.3KΩ F,RT ROHS TA-I,WALSIN,YAGEO, R834, ITEM Revision Description Supplier Usage Location...
  • Page 43 Service Manual ITEM Revision Description Supplier Usage Location 791431460800R PCBA,PWR&INV./B,AI/R,LE19D5-812 ROHS LELON,SAMXON, 420421000530R CAP SD 10uF/50V M,VT 105 5x11 RoHS C857 , SU'SCON,TEAPO, 420221000530R CAP HG 10uF 50V M,105 VT,5x11,RoHS SAMXON,SU'SCON, C869, 418210233030R CAP CD X7R 1000pF/1KV K,VT 2X7R102K102K5 JNC,POE,SUCCESS(SEC), C861,C876, 418210311030R CAP CD Y5P 0.01uF 50V K,VT RoHS...
  • Page 44 PC A 506060009110R CUSHION BOTTOM FOR LE19D5 PC A 506060009120R EPE CUSHION FOR LE19D5 PC A 506340004700R LABEL BLANK 101X50mm DELL EMEA CARTON PC A 506380002622R TAPE, WRAPPING TYPE PRINTED(DELL), BLACK 0.00153 ROL A 713000095901R ASSY PACK,40STD,LE19D5 PC A 713000095900R...
  • Page 45 Service Manual 20080703 ITEM Description Supplier Usage Un Revision 713000095900R ASSY PACK,20STD,LE19D5 506432003500R SLIP SHEET,L1320xW1062xH100mm, LE19D5 SUNSTREAM, PC A 506037009100R CARDBOARD,COVER,L1320xW1062xH100xT3mm,LE PC A 506039008800R CORNER PAPER 1060x50x50xT3mm LE1963 PC A 506431000300R FILM,PE 500mmx900M ROHS ROL A 506120400100R BAG AIR DUNNAGE 2000x1000mmLE1X03 ROHS SISUN, PC A 506380002612R...

  • Page 46: Attachment 2- Schematic

    ITEM Description Supplier Usage Un Revision 714030016310R ASSY,FRONT BEZEL(For CMO panel)L,LE19D5 501010216310R FRONT BEZEL(For CMO panel)L,LE19D5 PC A 3C0702200-000-GX2 LOGO PLATE,DELL,LE19D5 501030209810R POWER BUTTON(For CMO panel),LE19D5 PC A 3B3519E00-000-GX2 BEZEL RIGHT PROTECTIVE FILM 20080703 ITEM Description Supplier Usage Un Revision...
  • Page 47 Service Manual 1. Interface board schematic...
  • Page 48 Service Manual C137 4.7u/16V C135 100u/16V 0.1/16V C168 C143 0.1/16V C132 100u/16V C130 100u/16V C133 0.1/16V 0.1/16V C131...
  • Page 49 Service Manual R157 R158 AVDD_DVI AVDD_DVI AVDD_MPLL AVDD_PLL AVDD_ADC VDDP VDDP VDDP VDDP VDDP VDDC VDDC VDDC VDDC_OTP R182 R183 R184 R152 R153 10K/NC R163 R164 R181 R162 10K/NC R173...
  • Page 50 Service Manual 2. Power board schematic...
  • Page 51 Service Manual ON/OFF...
  • Page 52 Service Manual...

  • Page 53: Attachment 3- Pcb Layout

    Service Manual Attachment 3- PCB Layout power/inverter bd: Power/inverter bd: Top Layer...
  • Page 54 Service Manual Bottom Layer...
  • Page 55 Service Manual I/F board: Top Layer...
  • Page 56 Service Manual Bottom Layer...
  • Page 57 Service Manual Keypad: Top Layer Power key: Top Layer Bottom Layer...

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