Table of Contents
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22 inch TFT WXGA LCD Colour Monitor
Description
Important Safety Notice--------------------------------------2
Technical Data--------------------------------------------------3
Installation-------------------------------------------------------4
Troubleshooting-----------------------------------------------5
On Screen Display-----------------------------------------6~7
Lock/unlock, Aging,Factory mode--------------------------8
Mechanical Instructions ------------------------------10~13
Color adjustment --------------------------------------------14
F AQs (Frequently Asked Questions)--------------15~16
Electrical instruction ----------------------------------17~18
Service Tool-----------------------------------------------19~20
DDC Instructions & Serial Number -----------------21~26
DDC DATA -----------------------------------------------27~28
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOL TAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
Published by Philips Consumer Lifestyle Copyright reserved Subject to modification
202E1SB2/69
202E1SB2/70
202E1SB2/71
202E1SB2/93
202E1SB2/94
TABLE OF CONTENTS
Page
----------------------------------9
------------------------29~31
SAFETY
REFER TO BACK COVER FOR IMPOR T ANT SAFETY GUIDELINES
Chassis:
Description
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-----------------------------------32
Wiring Diagram---------------------------------------------33
Block Diagram-------------------------------------------34~35
General product specification-----------------------50~75
Exploded V iew -------------------------------------------- 76
PCBA photos--------------------------------------------------78
Repair tips-----------------------------------------------79~80
Repair Flow chart--------------------------------------81~83
Safety Test Requirments-----------------------------------84
NOTICE
JOct 14 2011
MERIDIAN 1
Horizontal frequencies
30 - 8 3 kHz
Page
arts List------------------------77
GB
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Summary of Contents for Philips 202E1SB2/69
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Page 1: Table Of Contents
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOL TAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING. REFER TO BACK COVER FOR IMPOR T ANT SAFETY GUIDELINES Published by Philips Consumer Lifestyle Copyright reserved Subject to modification JOct 14 2011... -
Page 2: Important Safety Notice
SERVICE MANUAL. recommended by Philips must f irst sati sfy himself thoroughly that neither his safety nor the saf e operation of the equipment will be jeopardized by the service method sel ected. -
Page 3: Technical Data
202E1SB2 LCD Technical Data PIN No. SIGNAL PIN No. SIGNAL DDC +3.3V or +5V Green/ SOG Logic GND Blue Sense (GND) Type NR. : CMO M200O1-L07 Sense (GND) Bi-directional data Resolution : 1600x900 Cable Detect (GND) H/H+V sync Outside dimensions : 462.8(H) x 272(V) x 10.4(D) mm(Typ.) Red GND V-sync... -
Page 4: Installation
EDFU pack Connecting to Your PC 1) Connect the power cord to the back of the monitor firmly. (Philips has pre-connected VGA cable for the first installation.) To switch monitor's power On and To access the OSD menu To adjust the OSD menu... -
Page 5: Troubleshooting
The "power on" light is too strong 1. You can adjust “power on” light using the power LED of Setup in OSD main Controls. to disturb me. For further assistance, refer to the Consumer Information Centers list and contact Philips customer service representative. -
Page 6: On Screen Display
What is the On-Screen Display? On-Screen Display (OSD) is a feature in all Philips LCD monitors. It allows an end user to adjust screen performance or select functions of the monitors directly through an on-screen instruction window. A user friendly on screen display interface is shown as below : Basic and simple instruction on the control keys. -
Page 7: On Screen Display
202E1SB2 LCD On-Screen Display The OSD Tree Below is an overall view of the structure of the On-Screen Display. You can use this as a reference when you want to work your way around the different adjustments later on. Resolution notification This monitor is designed for optimal performance at its native resolution, 1600X900@60Hz. -
Page 8: Lock/Unlock,Aging,Factory Mode
202E1SB2 LCD Lock/Unlock,Aging,Factory Mode To lock/unlock OSD FUNCTION(User Mode) Factory Menu The OSD function can be locked by pressing"OK"button(1) Cursor can move on gray color area for more than 10 seconds, the screen shows following Hot key function: by pressing " UP " and " DOWN " key windows for 4 seconds. -
Page 9: Philips Pixel Defect Policy
Pixel Defect Tolerances In order to qualify for repair or replacement due to pixel defects during the warranty period, a TFT LCD panel in a Philips flat panel monitor must have Pixels and Sub pixels pixel or sub pixel defects exceeding the tolerances listed in the following A pixel, or picture element, is composed of three sub pixels in the primary tables. -
Page 10: Mechanical Instructions
202E1SB2 LCD Preparation before disassemble 1. Clean the room for disassemble 2. Identify the area for monitor 3. Check the position that the monitors be placed and the quantity of the monitor; prepare the area for material flow; according to the actual condition plan the disassemble layout 4. - Page 11 202E1SB2 LCD 220B1 LCD Disassembled the Main-BKT : Screw-dri hexagonal screw *4 draw the control board cable , tear off three pieces of AL foils Disassemble the sheet iron which cover the AC-socket Notes the below PIC Lift up the Mylar AL foil in the left, Man can raise the and Pull out the lamp cables Lock of Lamp and...
- Page 12 202E1SB2 LCD 220B1 LCD Uplift the Main-BKT and Please carefully use Unlock the LVDS by using two two hands (one hand hands (see note), and then take presses the the entire internal mechanism locking-latch of LVDS from Bezel and put it on the cable’s housing, and cushion at the same time...
- Page 13 202E1SB2 LCD 220B1 LCD Disassemble the ITF-board 2 screws Take the PCBA from Main-BKT and then put it on the cushion Pull out the cable of Power board Notes: Pull the connect upright Pull out the LVDS cable Notes: use one finger lift up the cover of connect ,and then pull the LVDS cable...
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Page 14: Color Adjustment
202E1SB2 LCD Color Adjustment Alignment procedure 1. Turn on the LCD monitor . 2. Turn on the Timing/pattern generator. See Fig.1 3. Preset LCD color Analyzer CA-1 10 -Remove the lens protective cover of probe CA-A30. -Set measuring/viewing selector to measuring position for reset analyzer .(zero calibration) as Fig.2 - Turn on the color analyzer (CA-1 10) -Press 0-CAL button to starting reset analyzer . -
Page 15: Faqs (Frequently Asked Questions)
Restart your computer and repeat step 2 and 3 to verify that your PC is set at 1600x900@60Hz (20"). Shut down your computer, disconnect your old monitor and reconnect your Philips LCD monitor. Turn on your monitor and then turn on your PC. - Page 16 Q9: Can the Philips LCD Monitor be mounted on the wall? A: Yes. Philips LCD monitors have this optional feature. For standard VESA mount holes on the rear cover allows the user to mount the Philips monitor on most of the VESA standard arms or accessories. We recommend to contact your Philips sales representative for more information.
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Page 17: Electrical Instruction
202E1SB2 LCD Electrical characteristics end heads. 1. Interface signals Sliver & Black model: Black heads and cable. 1.1 D-Sub Analog T color model: Green heads and white cable. Input signal: Video, Hsync., Vsync 3. Timing requirement Video: 0.7 Vp-p, input impedance, 75 ohm @DC 3.1 Factory Preset mode definition: Sync.: Separate sync TTL level , input impedance 3.1.1 Perfect FOS while presenting all required... - Page 18 202E1SB2 LCD White color adjustment There are three factory preset white color 9300K, 6500 and sRGB No FGA function in 202E1. The 1931 CIE Chromaticity (color triangle) diagram (x , y) coordinate for the screen center should be: Product specification CIE coordinates (x,y) 9300K...
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Page 19: Service Tool
202E1SB2 LCD Service tool-Hardware PCM code 12NC 5E.L8215.001 996510019769... -
Page 20: Service Tool
202E1SB2 LCD Service tool-Software FW writing tool: RTD tool V6.7 DDC writing tool: Q-EDID-V16... -
Page 21: Ddc Instructions & Serial Number
202E1SB2 LCD DDC Instructions DDC Data Re-programming In case the DDC data memory IC or main EEPROM which storage all factory settings were replaced due to a defect, the serial numbers have to be re-programmed "Analog DDC IC, Digital DDC IC & EEPROM". It is advised to re-soldered DDC IC and main EEPROM from the old board onto the new board if circuit board have been replaced, in this case the DDC data does not need to be re-programmed. -
Page 22: Pin Assignments
202E1SB2 LCD DDC Instructions 5. Connect and Mains cord to Monitor as shown in Fig.2. Fig.2 Pin assignments : A. 15-pin D-Sub Connector PIN No. SIGNAL PIN No. SIGNAL DDC +3.3V or +5V Green/ SOG Logic GND Blue Sense (GND) Sense (GND) Bi-directional data Cable Detect (GND) - Page 23 202E1SB2 LCD DDC Instructions 6. Setup the Philips-IMS EDID Tools program Step 1: Run the program “Q-EDID-V016.exe”, when the UI popped up Note: If “VGA” choose 128bytes...
- Page 24 202E1SB2 LCD DDC Instructions Step 2: Click “Open File” and select “VGA” or “DVI” EDID file Step 3: If load file is successful, it shows “Open EDID Table OK.” And then, Click “Write EDID” button to update EDID...
- Page 25 1202E1SB2 LCD DDC Instructions Step 4: If write EDID is successful, it shows ”Write EDID OK …” And then, click “Read EDID” button to check if successful or not. Step 5: If read EDID is successful, it shows” Read EDID OK …”...
- Page 26 202E1SB2 LCD DDC Instructions 7. Press Monitor Menu Key to check OSD Serial number is the same as PI-EDID write data as shown in Fig.10 Note: If not the same, please rewrite EDID S/N again. Fig.14 8. Turn off the monitor, exit the factory mode. Serial Number Definition...
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Page 27: Ddc Data
EDID Revision#: <---Detailed Timing Descriptions---> <-x-EDID Structure Version/Revision-x-> Detailed Timing: 1600x900 @59Hz Detailed Timing: FF (Monitor SN) 'CS30715000001' <---Basic Display Parameters/Features---> Detailed Timing: FC (Monitor name) 'Philips 202E' Video i/p definition: Analog Detailed Timing: FD (Monitor limits) Setup: Blank-to-Black not expected Vert: 56 - 76 Hz Seperate Syncs. -
Page 28: Ddc Data
1600x900 @59Hz Detailed Timing: FF (Monitor SN) <---Basic Display Parameters/Features---> 'CS30715000001' Video i/p definition: Digital Detailed Timing: FC (Monitor name) 'Philips Setup: Blank-to-Black not expected 202E' Seperate Syncs. support: Detailed Timing: FD (Monitor limits) Composite Sync. support: Vert: 56 - 76 Hz Vsync. -
Page 29: Firmware Upgrade For Cpu
202E1SB2 LCD Firmware Upgrade for CPU 1. Hardware Requirement: 1.1. I2C board x 1 (a.Print Board b. I2C Board) 1.2. DSUB VGA cables x 2 1.3. Printer cable (with one male connector and another female connector) x 1. 1.4. PC or Notebook with parallel (printer) port x1. Print 1.5 Check the Jumpers on the I2C circuit board (make sure J5/J6/J7/J8 are set at Pin 1 &... - Page 30 202E1SB2 LCD Firmware Upgrade for CPU Link “I2C BD, Power cable and Signal cable 2. Software prepare DebugTool_V6.7_20090625.exe Step 1: Press RTD Tool Step 2: Choose “ IIC”, “RTD2122” and . Then, press “ISP”...
- Page 31 202E1SB2 LCD Firmware Upgrade for CPU Step 3: Click the “BigBin” and Find the F/W 1. xxx.bin Step4: Choose “All” ,”0X94”, “Bin” and “Auto” Step5: Press to run the program Step6: Check result, If the words showed in red, need to run the program again...
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Page 32: Failure Mode Of Panel
202E1SB2 LCD Failure Mode Of Panel Quick reference for failure mode of LCD panel this page presents problems that could be made by LCD panel. It is not necessary to repair circuit board. Simply follow the mechanical Polarizer has bubbles instruction on this manual to eliminate failure by replace LCD panel. -
Page 50: General Product Specification
202E1SB2 LCD General Product Specification Meridian – 202E1 GENERAL PRODUCT SPECIFICATION Issued by: Argent Chan/Paul Tsai Revision History Ver. Date (yy.mm.dd) Author Brief Description 2009.02.26 Initiate version 2009/05/06 Paul Add EPA5.0 requirements into power sec. Jack 1. Update panel spec. 2009/06/25 Paul 1. - Page 51 . ANTI-GLARE TO REDUCE LIGHT REFLECTION . POWER MANAGEMENT CAPABILITY . SOG SUPPORT . SmartContrast . Windows Vista Basic/Standard Premium Logo Certification . FACTORY GAMMA ALIGNMENT (FGA) REQUIREMENT . POWER ON PHILIPS LOGO REQUIREMENT . WEEE REQUIREMENT . RoHS REQUIREMENT 202E1 20”Wide 1600x900 (HD+) 2009/6/25...
- Page 52 202E1SB2 LCD General Product Specification CONTENTS FOREWORD ..........................55 PRODUCT PROFILE........................55 LCD............................55 CANNING FREQUENCIES ......................56 : 0 C - 40 C ................57 MBIENT TEMPERATURE ELECTRICAL CHARACTERISTICS ..................57 NTERFACE SIGNALS .......................57 NTERFACE ..........................58 IMING REQUIREMENT ......................60 ORIZONTAL SCANNING .......................62 ERTICAL SCANNING ......................62 OWER INPUT CONNECTION ....................62 )..............62...
- Page 53 .......................68 5.15 ABEL ............................68 5.16 SHT 191/SHT560 ).68 RODUCT DIMENSION EIGHT EFER TO HILIPS APPROVED 5.17 RANSPORTATION .........................69 5.18 SHT 560) ....69 ALLET ONTAINER LOADING EFER TO HILIPS APPROVED ENVIRONMENTAL CHARACTERISTICS................70 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 53 of 26...
- Page 54 ISPLAY DISTURBANCES FROM EXTERNAL ENVIRONMENT ..........71 ISPLAY DISTURBANCES TO EXTERNAL ENVIRONMENT .............71 RELIABILITY..........................71 ETWEEN AILURES ..................71 QUALITY ASSURANCE REQUIREMENTS ................71 CCEPTANCE TEST ........................71 PHILIPS’ FLAT PANEL MONITORS PIXEL DEFECT POLICY........72 REGULATORY COMPLIANCE ..................75 10.1 ORLDWIDE EGULATORY ....................75 10.2 EMC R EQUIREMENTS ......................75 10.3 HS ............................75...
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Page 55: Foreword
: Anti-glare type, Hardness 3H Color depth : 16.7M colors (RGB 6-bits+Hi-RFC data) Backlight : 2 CCFL Active area (W x H) : 442.8(H) × 249.075(V) mm View angle (CR>=10) : 80/80 Right/Left (Typ) 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 55 of 26... -
Page 56: Scanning Frequencies
202E1SB2 LCD General Product Specification : 80/80 for Up/Down (Typ) Contrast ratio : >=1000:1 (Typ) White luminance : 250 (center,Typ)@CCFL=7.5 mA Color gamut : >=72% Response time : ms (Typ) Priority: 1. CMO M200O1-L07 Type NR. : CMO M200O1-L07 Resolution : 1600x900 Outside dimensions : 462.8(H) x 272(V) x 10.4(D) mm(Typ.) -
Page 57: Ambient Temperature: 0 C - 40 C
3). Audio (not need on 202E1) Input signal: 1000 mVrms Loudspeaker (Impedance: 8 Ohm +/-15%): 1 W+1 W stereo for RMS Power Frequency range: 450Hz - 20KHz Headphone connection will mute speakers 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 57 of 26... -
Page 58: Interface
202E1SB2 LCD General Product Specification Interface 3.2.1 D-Sub Cable Length : 1.5 M +/- 50 mm Fix with monitor when packing, with transplant pin protective cover. Connector type : D-Sub male with DDC2B pin assignments. Blue connector thumb-operated jack screws Pin assignments: PIN No. - Page 59 No Connect +5V Power Ground (for +5V) Hot plug detect T.M.D.S. data0- T.M.D.S. data0+ T.M.D.S. data0 shield No Connect No Connect T.M.D.S clock shield T.M.D.S. clock+ T.M.D.S. clock- 3.2.3 Audio Cable (N/A) 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 59 of 26...
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Page 60: Timing Requirement
202E1SB2 LCD General Product Specification Length : 1.5 M +/- 50 mm Connector type : 3.5-mini jack with color on the both end heads. Sliver & Black model: Black heads and cable. T color model: Green heads and white cable. Timing requirement Factory Preset mode definition: 1. - Page 61 9 LANGUAGES OSD TREE POWER ON LOGO Power On Logo: Power On Show up Philips logo 3 seconds Change to input signal. This picture is reference only. The official drawing will send out by PM. Audio Selection Stand-alone – On:...
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Page 62: Horizontal Scanning
202E1SB2 LCD General Product Specification Power On A user press the power key LEDs of all functional keys and Power key are all ON After 12 sec, LEDs of functional keys are OFF, Power key LED remain ON The LED OFF behavior is to smoothly off, time period is 2sec Users operations: A user press one of functions keys All LEDs of functional keys are ON during the user operation... -
Page 63: Vga Display Identification
3.10 Data for EDID & INF file Data for EDID & .inf file Data for EDID & .inf file User visible strings on .inf file Philips 202E (20inch WIDE LCD MONITOR 202E1) Manufacturer ID ( EDID data) Product ID, "xxxx" 4 codes MSB(byte 12): C0... -
Page 64: Hot-Key Definition
General Product Specification 3.11 Hot-key definition Any deviation between document and sample, please refer to Philips approved sample. 3.12 Smart contrast Smart Contrast is a kind of backlight control. This function changes panel backlight according to the frame brightness histogram. -
Page 65: Check Cross Talk (S)
The 1931 CIE Chromaticity (color triangle) diagram (x , y) coordinate for the screen center should be: Product specification CIE coordinates (x,y) 9300K x = 0.283 ± 0.02 y = 0.297 ± 0.02 6500K/sRGB x = 0.313 ± 0.02 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 65 of 26... - Page 66 202E1SB2 LCD General Product Specification y = 0.329 ± 0.02 sRGB x = 0.313 ± 0.02 y = 0.329 ± 0.02 Production alignment spec. CIE coordinates (x,y) 9300K x = 0.283 ± 0.008 Follow Qisda OTS y = 0.297 ± 0.008 6500K/sRGB x = 0.313 ±...
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Page 67: Mechanical Characteristics
Mechanical characteristics Cosmetic - Philips ID Mechanical data files - ProE files required Location of Philips logo - Per Philips make-up sheet Gap between panel and front bezel < 1.0mm (Typ.) Location of Control icons - Per Philips Graphic sheet... -
Page 68: Plastics Flammability
Regulatory label / Carton label should follow Philips requirement. China RoHS label Detail document refer to Philips Engineering Reference Book. 5.16 Product dimension / Weight ( Refer to Philips approved SHT 191/SHT560 ) Unit dimension : 484.83*199.91*373.94mm Packed unit dimension: WW:TBDmm China : TBDmm... -
Page 69: Transportation
3. Cold Drop test (for design reference) Un-package test 1. Half sine shock test (non operation) 5.18 Pallet / Container loading (Refer to Philips approved SHT 560) Transportation standards refer to TYE-M0002 ,UAN-D1534 and UAW-0309. Air shipment - Sea container 20'(pallet/slip sheet) -
Page 70: Environmental Characteristics
202E1SB2 LCD General Product Specification Transportation request for all regions except China/India A. Air shipment B. 20’/40’/40’HQ Container loading for WW Transportation request for China and India A. Container loading for China and India B. Truck loading Environmental characteristics The following sections define the interference and susceptibility condition limits that might occur between external environment and the display device. -
Page 71: Display Disturbances From External Environment
System MTBF (excluding the LCD panel and CCFL) : Refer to 2.1 panel MTBF Quality assurance requirements Acceptance test According to MIL-STD-105D Control II level AQL: 0.4 (major) 1.5 (minor) (Please also refer to annual quality agreement) Customer acceptance criteria: UAW0377/00 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 71 of 26... -
Page 72: Philips' Flat Panel Monitors Pixel Defect Policy
202E1SB2 LCD General Product Specification Philips’ Flat Panel Monitors Pixel Defect Policy Philips’ Flat Panel Monitors Pixel Defect Policy BRIGHT DOT DEFECTS ACCEPTABLE LEVEL 202E1 MODEL 1 lit sub-pixel 2 adjacent lit sub-pixels 3 adjacent lit sub-pixels (one white pixel) - Page 73 202E1SB2 LCD General Product Specification Fig 1: Measurement locations of Brightness Uniformity 202E1 20”Wide 1600x900 (HD+) 2009/6/25 PHILIPS 73 of 26...
- Page 74 202E1SB2 LCD General Product Specification Fig 2: Cross talk pattern Gray level 46 (64 Gray level) Fig 3: Cross talk Pattern Center at Gray level 0 (Black)
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Page 75: Regulatory Compliance
Restriction on the use of certain hazardous substances. Lead, Cadmium, Mercury, Hexavalent Chromium, Polybrominated Bipheny1 (PBB) and Polybrominated Bipheny1 Ether (PBDE)(flame retardant). 10.4 WEEE Producer (Philips) responsible for retailer take back schemes and recycling. --System implemented. --Collection and recycle targets. 10.5 Ongoing Regulatory There's a possibility that other regulatory certificates will be required during the life of the product. -
Page 77: Spare/Recommended P Arts List
Panel+PCBA Styling Panel+PCBA Styling Model 9J.0Y272. 21PCS 3B7 3BK 3BC 3BN 3B4 location Description PCM code Philips 12NC CMI CMI CMI CMI CMI MAIN (I/F) BOARD ASS'Y 5E.0Y201.003 POWER BOARD ASS'Y 5E.0Y202.001 LCDM20W M200O1-L07 C3/C4 P(CMI) 5F.LM1PP.021 Mechanical Styling Mechanical Styling... -
Page 78: Pcba Photos
202E1SB2 LCD Panel & PCBA photos ITEM PCM Philips 12NC Description Photo 1 5F.LM1PP.021 LCDM20W M200O1-L07 (CMI) 2 5E.0Y201.003 MAIN (I/F) BOARD ASS'Y POWER BOARD ASS'Y 5E.0Y202.001 CTRL BOARD ASS'Y 5E.0Y203.001... -
Page 79: Repair Tips
202E1SB2 LCD 0. Warning All ICs and many other semi -conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically . When repairing, make sure that you are connected with the same potential as the mass of the unit via a wrist wrap with resistance. - Page 80 IC data sheet. So as not to damage neighbouring components, it may be necessary to reduce some temperatures and times. More Information For more information on how to handle BGA devices, visit this URL: http://www.atyourservice.ce.philips.com (needs subscription). After login, select Magazine, then go to Workshop Information. Here you will find Information on how to deal with BGA-ICs.
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Page 81: Repair Flow Chart
202E1SB2 LCD Repair Flow Chart Bad brightness Check Bad Power Board Power Board Check fluorescent lamp Check LCD panel Bad Image Check Video, fh/fv signals Bad Scaler Board Check Scaler Board Check all connectors& LVDS cable Check LCD panel... - Page 82 202E1SB2 LCD Repair Flow Chart No Display Check Mains cord & LED of monitor Check Power board 18V/12V/5V DC Check Video Video source signals inputs interface Check Power Board Check LCD Panel Front control key does not work Check Control Board CheckSignal connectors...
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Page 83: Repair Flow Chart
202E1SB2 LCD Repair Flow Chart No Display Check Mains cord & LED of monitor Check Power board 18V/12V/5V DC Check Video Video source signals inputs interface Check Power Board Check LCD Panel Front control key does not work Check Control Board CheckSignal connectors...