Service Manual Service Manual LCD Monitor E2009W - 0 -...
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 E2009 Service Manual...
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: This monitor should be operated only at the correct power sources indicated on the rating label on the rear cover of the monitor.
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...
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.
Service Manual The over-voltage protection feature is implemented by using an extermal capacitor 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.
Service Manual fig.2.2.2 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.
Service Manual D854&D855 are used to rectify the inducted current. R861 & 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.
Service Manual - Button “Menu” on front bezel connects to U105 (TSUM58EHJ-LF-2) #50 through CN104 #1, U105 #50 Voltage is defined as “Menu”. - Button “SELECT” on front bezel connects to U105 (TSUM58EHJ-LF-2) #122 through CN104 #4, U105 #122 Voltage is defined as “SELECT”. - LED Indicator on Front Bezel a.
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.
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...
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...
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.
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.
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.
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).
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...
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”...
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.
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.
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).
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?
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.
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...
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 signal at 73# of display OSD when press key? CN101#1, #2...
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...