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Acer P203 Service Manual

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ACER
ACER_LCD_P203W_SM072301V1
Service
Model ID: R20BNUM-M1
Service Manual

Table of Contents

Important Safety Notice------------------------------------------------------------------------------------- 01
01. Product Specification--------------------------------------------------------------------------------- 02
02. OSD Menu-----------------------------------------------------------------------------------------------08
------------------------------------------------------------------------------------- 10
04. Assembly and Disassembly Procedures-----------------------------------------------------------12
05.
Troubleshooting----------------------------------------------------------------------------------------20
06. Schematics and Layouts------------------------------------------------------------------------------ 32
Appendix I : User's Manual
Appendix II: Quick Setup Guide
Appendix III : Spare Parts Llist
Safety Notice
Any person attempting to service this chassis must familarize with the chassis and be aware of the
necessary safety precautions to be used when serving electronic equipment
containing high voltage.
Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification
23th-Jul-2007

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  Summary of Contents for Acer P203

  • Page 1: Table Of Contents

    ACER ACER_LCD_P203W_SM072301V1 Service Model ID: R20BNUM-M1 Service Manual Table of Contents Important Safety Notice------------------------------------------------------------------------------------- 01 01. Product Specification--------------------------------------------------------------------------------- 02 02. OSD Menu-----------------------------------------------------------------------------------------------08 03. Exploded Diagram ------------------------------------------------------------------------------------- 10 04. Assembly and Disassembly Procedures-----------------------------------------------------------12 Troubleshooting----------------------------------------------------------------------------------------20 06. Schematics and Layouts------------------------------------------------------------------------------ 32 Appendix I : User’s Manual...
  • Page 2: Important Safety Notice

    Important Safety Notice Using Lead-Free solder to well mounted the parts. ! The fusion point of Lead-Free solder requested in the degree of 220 C. ° ACER P203W Go to cover page...
  • Page 3: Product Specification

    ACER P203W Go to cover page 1.1 SCOPE This document defines the design and performance requirements for an 20/22W inch diagonal , flat panel monitor .The display element shall be a WSXGA (1680x1050) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M color(RGB 6bits+FRC) images are displayed on the panel.Video input signals are...
  • Page 4 Minimum range Note 1) Note 1) 75Ω to Ground ACER P203W Go to cover page The three video inputs consist of Red ,Green , and Blue signals, each with its own coaxial cable terminated at the monitor. These video signals are analog levels, where 0...
  • Page 5 ACER P203W Go to cover page 1.3.2.6 Abnormal Signal Immunity The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or abnormal input signal amplitude ( video and/ or sync too large or too small) , or any other anomalous...
  • Page 6 Inrush Current Hot Start Cycle Under Voltage Line Transient ACER P203W Go to cover page The monitor shall contain provisions to “stretch” the video signal, so that an input signal from the computer in any resolution smaller than 1680 x 1050 is automatically expanded to fill the entire screen.
  • Page 7 ACER P203W Go to cover page 1.3.8 Display Communications Channel The monitor assembly shall provide a display communications channel that conforms to VESA DDC2Bi hardware requirements. This configuration shall contain the 128-byte EDID file as specified by VESA EDID standard.The monitor should not write to...
  • Page 8 1. Product Specification (continued) Optical Characteristics Depends on the LCD supplier's spec. Details refer to QA Inspection Spec. Minimum Separation N / A 15 mm 15 mm 15 mm 25.4 mm 25.4 mm Not applicable ACER P203W Go to cover page...
  • Page 9: Osd Menu

    ACER P203W Go to cover page 2.1 MAIN OSD MENU Outline: The description for control function: M a in S u b S u b M e n u M e n u M e n u D e s c r ip t io n...
  • Page 10 2. OSD Manu (continued) ACER P203W Go to cover page...
  • Page 11: Exploded Diagram

    ACER P203W 3. Exploded Diagram Go to cover page 3.1 Packing Exploded Diagram...
  • Page 12 ACER P203W 3. Exploded Diagram (continued) Go to cover page 3.2 Product Exploded Diagram...
  • Page 13: Assembly And Disassembly Procedures

    ACER P203W Go to cover page 4.1 Assembly procedures: Connect the cable between power board(P802) and interface board (P301) Connect the function key cable into interface board(P306) Connect the FFC cable into interface board P301 P802 Take a bracket chassis base on a protective cushion and stick an insulator on the specific position, take a power board and turn it over.
  • Page 14 Angel < 5 degrees Plug 8 lamp cables to the connectors of power board.(Both of right and left sides) ACER P203W Use a Phillips-head screwdriver screwed the No.1~4 screws on both side and assemble the LCD panel and bracket chassis module.
  • Page 15 ACER P203W Go to cover page Put a ear over n he ssembled nit nd ress on force echanisms ocked nd irmly attached Assemble the stand upper side to the rear cover through the way of screwing 4 screws till both units firmly attached.
  • Page 16 ,power cable on specific positions as photo below. USER’S MANUAL STAND Move previous assembled parts into the carton then stick Vista and feature label on the carton then packing the carton FEATURE LABEL VISTA LABEL D-SUB CABLE ACER P203W Go to cover page...
  • Page 17 ACER P203W Go to cover page 4.2 Disassembly procedures Open the carton with a proper tool. FEATURE LABEL VISTA LABEL Take out all accessories including D-SUB cable power cable, DVI cables, user’s manual, and stand base and packing material from the carton.
  • Page 18 Work your way along the front bezel to disengage all the locking mechanism. ACER P203W Unhook the key function board from rear bezel, disconnect the key function cable Use a Hex-head screwdriver unscrewed 4 screws to...
  • Page 19 ACER P203W Go to cover page Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the LCD panel and bracket chassis module. (No1~4 screw size=M3x6; Torque=3~4KGFxCM). Unplug 4 lamp cables (No. 1~4). Take out lamp cables right through the No.1 and 2 square holes and separate the bracket chassis module and LCD panel apart.
  • Page 20 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the power board. (No1 screw size=M4x8; No2~4 screw size=M3x6; Torque=9~10KGFxCM). Disconnect the FFC, P301, and function key cables to connectors of interface board. P301 P802 P306 ACER P203W Go to cover page...
  • Page 21: Troubleshooting

    ACER P203W 5. Troubleshooting Go to cover page 5.1 No.display of screen (Screen is black, color of LED is amber) Does OSM display when you push PROCEED buttom. Proceed "No OSM display" section. When a signal isn't being inputted, it is indicated with "No Signal Input".
  • Page 22 2) Reconnect the video cable. 3) Change the video cable. Check if the LCD video signal cable is connected between the Interface Board and LCD module. Next Page ACER P203W Go to cover page Failure Point The LCD video signal cable is disconnected.
  • Page 23 ACER P203W Go to cover page 5.2 Nothing display on screen (screen is black, color of LED is blue) continued Continue Check the 5V power supply for P304 pin 1, 2, 3 Check the input voltage level whether was changed when pressed function...
  • Page 24 Failure Point 1) printed wire broke between P301 pin2, R303 and I305 pin 88. 2) I305 is failure. Failure Point 1) printed wire broke between P301 pin3, R301 and I305 pin86. 2) I305 is failure. ACER P203W Go to cover page...
  • Page 25 ACER P203W Go to cover page 5.4 Abnormal screen for VGA signal from computer input on Check the R, G, B input video respectively that their level is 0.0 5. Troubleshooting (continued) Check the R, G, B video P302 of video connector.
  • Page 26 1)Printed wire broke between P303 pin 17, 18 and I306 pin 3, 4. 2) Video cable is failure. 3) R336, R337 open. Failure Point Printed wire broke between I305 and P304. ACER P203W Go to cover page...
  • Page 27 ACER P203W Go to cover page 5.6 Abnormal OSM display adjust problem Check the input TTL level whether was changed when pressed function keys on the P306 pin 4, 5 (normal is high level, when push buttom, generated Check the input TTL level of I305 pin89, 90 whether was changed when pressed function keys.
  • Page 28 Failure Point 1) Printed wire broke between I303 pin8, D308 and P302 pin9. 2) D309, C329 is short. 3) D308 is failure. Failure Point The Video cable is failure. Failure Point I303 is failure. ACER P203W Go to cover page...
  • Page 29 ACER P203W Go to cover page 5.8 Abnormal plug and play operation (For the DVI) Confirm the host computer Check the voltage on P303 pin14 that is power DC 5 V. Check the voltage on P303 Check the voltage on I304 pin8 that is power DC 5 V.
  • Page 30 5. Troubleshooting (continued) level. Failure Point Video cable is failure. level. Failure Point 1) Printed wire broke between P302 pin13 and I305 pin27. 2) FB309, R321 are short. 3) D307 or R324 or C327 is short. ACER P203W Go to cover page...
  • Page 31 ACER P203W Go to cover page 5.10 Checking the resolution change IC movement Check +3.3V supply on I305 pin8, pin14, pin16, pin24 , pin32, pin49, pin56, pin75, pin98 Check +1.8V supply on I305 pin 51, 66, 82, 34. Check X301 14.318MHz clock input to I305 pin96 and pin97 at TTL level.
  • Page 32 1) Printed wire broke between P301 pin5, pin6, and I302 pin3. Failure Point I302 is failure. Q305 pin1. Failure Point Printed wire broke between I302 pin2, pin4 and Q305 pin1. Failure Point D326 is failure. ACER P203W Go to cover page...

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