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Table of Contents
Related Manuals for Dell 2208WFP
Summary of Contents for Dell 2208WFP
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Page 1: Service Manual
Service Manual Service Manual LCD Monitor 2208W... - 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 2208WFPf Service Manual...
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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 .............................. -
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. Realtek ISP_Programmer 9. Fox_VEDID_Programmer... -
Page 6: Chapter 3- Circuit Theory
Service Manual Chapter 3- CIRCUIT THEORY Block Diagram There are pcs PCBA in this monitor, one is power& inverter&Audio board which is a single layer board, one is interface board including USB HUB 1up/2down, one is keypad which is OSD control, and one is USB transfer board located on the right side back cover. - Page 7 Service Manual Fig.1...
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Page 8: Electronic Circuit Theory
Service Manual Electronic Circuit Theory Inverter PWM circuit 2.1.1)Inverter Control circuit:(fig.2) Fig.2... - Page 9 Service Manual +5VDC provides the power for U1; the control signals Brightness and ON/OFF come from I/F board. ON/OFF signal connect to pin of U1 and makes U1 enable. Brightness signal connect to of U1 and regulates the brightness of panel .TIMER makes up a network of delaying time circuit and R23 make up a divided voltage network, C are used to .
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- Page 11 Service Manual 2.2.2) AC Input and EMI Filter:(fig.5) fig.5 CN850 is a connector for connecting AC Power. F850 is a fuse to protect all the circuit AC. Input voltage is from 90V to 264V. R850/ 851 are joined between two inputting main circuit to prevent man from shock.
- Page 12 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. U850 is a highly integrated PWM controller. Typical start-up current for U850 is only uA, When current flow through R8 1/R842/R843 gets to Pin of U850, with VDD hold-up capacitor C85 , U850 is enough for starting up.
- Page 13 Service Manual fig.7 D854&D855 are used to rectify the inducted current. C862 are used to store energy when current is reversed. The parts including L852 are used to smooth the current waves that are from D854&D855, and then 2 V voltage is supplied. D880&D881 are used to rectify the inducted current .
- Page 14 Service Manual then 5V voltage is supplied. 5V supply voltage feed back to PWM controller U850 via R861, R860,and I850,I851.R859,C859 and C863 are used to control response time. LD7575 implements an OVP function on Vcc .Whenever the Vcc voltage is higher than the OVP threshold voltage, the output gate drive circuit will be shutdown simultaneously thus to stop the switching of the power MOSFET until the next on.
- Page 15 Service Manual - Differential Signal input RX0+,RX0-,RX1+,RX1-,RX2+,RX2-,RXC+,RXC- through CN201 #18,#17,#10,#9,#2,#1,#23,#24 via R206,R205,R204,R203,R202,R201,R207,R208 enter into U105 (RTD2545LH) Digital input terminal #4,#5,#2,#3,#47,#48,#6,#7, and then RTD2545LH deals with signal internally. D206, D207, D204, D205, D202, D203, D208, D209 are ESD protector to prevent U105 from ESD - Signal DDC_SCL (series clock) inputs via CN201#6, and then passes through ZD204 Zener for ESD protection, via R209, goes into EDID EEPROM IC U201 #6.
- Page 16 Service Manual - Button “Power” on front bezel connects to U108 (RTD2122L) #9 through CN104 #8, U108 #9 is defined as power on/off. - Button “+” on front bezel connects to U108 (RTD2122L) #47 through CN104 #4, U105#47 Voltage is defined as “Plus”. - Button “-”...
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Page 17: Factory Preset Timing Table
Service Manual -+1.8V is generated from Regulator U102 which is supplied by+3.3V through C106 filtering, 3. FACTORY PRESET TIMING TABLE Standard Resolution Horizontal Frequency Vertical Frequency (Hz) (KHz) 720 x 400 31.469 70.087 640 x 480 31.469 59.940 640 x 480 37.500 75.000 800 x 600... -
Page 18: 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) 0.5 ~10 0.0~50 ≥450 ≥90 0.0~50 >500 5. D-SUB Connector Pin Assignment Symbol Symbol Symbol... - Page 19 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...
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Page 20: Key Parts Pin Assignments
Service Manual 8. Key Parts Pin Assignments U105(RTD2545LH) - Page 21 Service Manual 8.1 U108 (MCU RTD2122L)
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- Page 24 Service Manual 8.3 U850 ( , PWM Power Controller) Symbol Description This pin is to program the switching frequency. By connecting a resistor to ground to set the switching frequency. COMP Voltage feedback pin(same as the COMP pin in UC384X).By connecting a photo-coupler to close the control loop and achieve the regulation.
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Page 25: Chapter 4- Disassembly & Assembly
Service Manual Chapter 4- Disassembly & Assembly 1. Exploded Diagram... - Page 26 Service Manual 2208WFPf Disassembly Block Note: 1. The arrows point out the direction of disassembly.
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Page 27: Assembly Block
Service Manual Assembly Block Note: 1. The arrows point out the direction of assembly... -
Page 28: Chapter 5- Test And Adjustment
Service Manual Chapter 5- TEST AND ADJUSTMENT 1. Function key Definitions Hot Key Operation HOT KEY OPERATION FUNCTION DESCRIPTION ENTER MENU POWER Press [+] & [MENU] at the same time, and then FACTORY ● ● press [POWER] for DC power on. Press the [-] MODE key to enter factory menu Brightness&... -
Page 29: Osd Control
Service Manual OSD Control... - Page 30 Service Manual ñ ç...
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Page 31: Factory Mode Introduction
Service Manual ñ ç ê Factory Mode Introduction With signal input, press “Power” button to turn off the monitor. Press “Menu” and “+” buttons together, and then press “Power” button to turn on the monitor. After power on.Press “-” key, enter Factory mode (Fig.10). Fig9... -
Page 32: Burn-In Pattern
Color Temp: The R, G, B of Cool (9300K), Warm (5700K) and Desktop (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. Dell panel P/N LCD supplier Panel Supplier P/N Dell P/N 22”W... -
Page 33: Auto Color Balance (Automatically Calibrate Chip Adc Parameter By Using Chip Internal Dac.)
Service Manual 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” button to execute “Auto Color” at standard video pattern pattern 5-MOSAIC 5.2 Please confirm the following steps to perform “Auto Color Balance”: - Connect the VGA cable with the standard video pattern generator and display pattern on the 5-MOSAIC... -
Page 34: 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 35 Service Manual Item Content Equipment Test OSD 1.Signal is set as 1680×1050@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.
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Page 36: 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 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 MCU(U108) via VGA Cable. - Page 37 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 #15,#16 Change crystal X101 of IF Board U108?
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Page 38: Led Amber
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 39 Service Manual 4.Power (include IF +5Vand +3.3V) supply normal ,key function OK,but backlight can’t be turned on No backlight No power supply to Check the cable that from I/F LED lamp is OK inverter BD to P/I BD is ok Is there 27V Voltage on Check power supply Q6, Q7...
- Page 40 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? CN103#1, #2, #3 signal at 39# of...
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Page 41: At 32-Gray Scale Pattern, Color Lost In Some Scale
Service Manual 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... -
Page 42: Chapter 7- Recommended Part List
Service Manual Chapter 7- RECOMMENDED PART LIST Content Description Supplier Usage 412000453820R IC LD7575PS SOP8(LEADTREND) RoHS LEADTREND, 412000654630R IC INL833GN SOP16(O2 MICRO)Rohs 426000091230R XFMR SW DIP PQ3220 PC44 650uH SPW-123R RoHS FOXCONN,FRONTIER,LISHIN,MEIKAI, 426000091160R XFMR SW DIP EEL22 P4 4.16H SPW-116 ROHS DARFON,FOXCONN,HUALON,LISHIN, CAP SE 120UF/450V M,105 CF 18X45(BLA),... -
Page 43: Attachment 1- Bill Of Material
Service Manual 412000372020R IC LD1117AL-3.3V-A SOT-223(UTC RoHS UTC, 412000372830R IC AS1117L-3.3TR-LF,SOT223(A1S EMI)RoHS A1SEMI, 412000372070R IC AZ1117H-3.3 SOT-223(AAC)RoHS BCD, 491731300100R PCB,I/F ,2/OSP /FR4 /12,LP2234 EXPRESS,HsiangKuo 491731500000R PCB,K/P ,2/ENIG/FR4 /08,LP2234 EXPRESS,WELFARE, 430602680190R SW,METAL DOME 180gf 5P ROHS FOXCONN,HUA-JIE, ATTACHMENT 1- Bill of Material 1. - Page 44 Service Manual 60 419302200510R C SMD(0402) NPO 22PF/50V J,RoHS DARFON,MURATA,TDK,WALSIN,YAGEO, C323,C324, 70 419301000510R C SMD(0402) NPO 10PF/50V J,RoHS DARFON,MURATA,TDK,WALSIN,YAGEO, C157,C158, DIO BAV99 350mW 70V SOT-23(PHI D102,D103,D104,D105,D202,D203,D204,D205 80 411020026210R PHILIPS, RoHS D208,D209,D210, DIO BAV99 350mW 75V SOT-23(PEC 80 411020026090R PANJIT, RoHS DIO BAV99-LF 350mW 70V SOT-23 80 411020026020R FRONTIER,...
- Page 45 Service Manual ZENER 6.2V BZT52-C6V2 320 411121462950R WILLAS, SOD-123(WILLAS)ROH ZENER 6.2V BZT52C6V2-7-F 320 411131562950R DIODES, SOD-123(DIODES) 330 491731300100R PCB,I/F ,2/OSP /FR4 /12,LP2234 EXPRESS,HSIANGKUO, 340 414918033450R RES SMD(0402) 330KΩ J,RT ROHS TA-I,UNIOHM,WALSIN,YAGEO, R303, 350 414918010550R RES SMD (0402) 1MΩ J,RT RoHS TA-I,UNIOHM,WALSIN,YAGEO, R311, BEAD CORE SMD(0603)300Ω...
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- Page 51 Service Manual 3.PCBA KEYPAD BOM 2E+07 ITEM P/N Description Supplier Usage Location Revision 791941500000R PCBA,KEYPAD BOARD,LP2234-512 ROHS 10 430602680190R SW,METAL DOME 180gf 5P ROHS FOXCONN,HUA-JIE, 20 430631080190R WFR 8P 1.25MM 180° W/LOCK ROHS FOXCONN,JOWLE, 1 CN101, 30 791941540000R PCBA,KEYPAD BOARD SMT LP2234-512 ROHS 2E+07 ITEM P/N Description...
- Page 52 506120007000R BAG PLASTIC L480xW610xT0.05mm(PRINTED) 506020025000R CARTON,DELL(WWW), LE22F4 506060011900R cushion-top,LP2234 506060011910R cushion-bottom,LP2234 506060011920R cushion-spacer,LP2234 506340004700R LABEL BLANK 101X50mm DELL EMEA CARTON 506380002622R TAPE, WRAPPING TYPE PRINTED(DELL), BLACK 0.00156 713010000901R ASSY PACK,40STD,LE22F4 713010000900R ASSY PACK,20STD,LE22F4 713010000903R ASSY PACK,AIR CARGO(20STD),LE22F4 713010000904R ASSY PACK,AIRCARGO(40STD),LE22F4...
- Page 53 Service Manual 20080329 ITEM Phant.item P/N Description Supplier Usage Revision 713010000903R ASSY PACK,AIR CARGO(20STD),LE22F4 506150006900R PALLET L1284xW914xH120mm LE1746 506037009500R CARDBOARD,COVER,L1192xW898xH100xT3mm,LE2 506039005410R CORNER PAPER 800x50x50xT3mm LE1718 506039001400R CORNER PAPER 200x50x50mm ROHS 506431000300R FILM,PE 500mmx900M ROHS 506120400100R BAG AIR DUNNAGE 2000x1000mmLE1X03 ROHS SISUN, 506380002612R TAPE,WRAPPING TYPE,50Mx82mm...
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Page 54: Attachment 2- Schematic
Service Manual Attachment 2- Schematic 1Interface board schematic... - Page 55 Service Manual...
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Page 62: Attachment 3- Pcb Layout
Service Manual Attachment 3- PCB Layout power/inverter bd: power/inverter bd: Top Layer... - Page 63 Service Manual Bottom Layer...