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Acer P243W Service Manual

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ACER
ACER_LCD_P243W_SM071121V3
Service
Model ID:MB243WABNS
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------------------------------------------------------------------------------ 31
Appendix I : User's Manual
Appendix II : 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
21th-Nov-2007

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  Summary of Contents for Acer P243W

  • Page 1: Table Of Contents

    ACER ACER_LCD_P243W_SM071121V3 Service Model ID:MB243WABNS 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------------------------------------------------------------------------------ 31 Appendix I : User’s Manual...
  • Page 2: Important Safety Notice

    Important Safety Notice ACER P243W Go to cover page Product Anouncement: This product is certificated to meet RoHS Directive and Using Lead-Free solder to well mounted the parts. ! The fusion point of Lead-Free solder requested in the Lead-Free produced definition. Using approved critical components only is recommended when the situation degree of 220 C.
  • Page 3: Product Specification

    ACER P243W 1. Product Specification Go to cover page 1.1 SCOPE This document defines the design and performance requirements for a 24W inch diagonal , flat panel monitor MONITOR SPECIFICATIONS .The display element shall be a WUXGA (1920x1200) ITEM SPEC...
  • Page 4 ACER P243W 1. Product Specification (continued) Go to cover page C o n n e c t o r P i n A s s i g n m e n t 1.3.2.1 Video Signal Amplitudes D S U B...
  • Page 5 ACER P243W 1. Product Specification (continued) Go to cover page 1.3.2.6 Abnormal Signal Immunity 1.3.3.4 OSD adjustment The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or ITEM CONTENT abnormal input signal amplitude ( video and/ or sync BRIGHTNESS Back light Luminance of the LCD panel is adjusted.
  • Page 6 ACER P243W 1. Product Specification (continued) Go to cover page 1.3.4.3 Mode Recognition Pull-in ■ Digital inputs (DVI, HDMI): Conflicting video- and PC The monitor shall recognize preset modes within a timings are to be treated as Video timings with one range of +/-1KHz whichever is less for horizontal ;...
  • Page 7 ACER P243W 1. Product Specification (continued) Go to cover page 1.4.2 Panel Timings Table 2 AC to DC Converter Requirements The controller included with the monitor shall translate all The operating range shall be from 90 to 132 and 195 to 265 AVC Input Voltage Range sinusoidal for all models specified.
  • Page 8 ACER P243W 1. Product Specification (continued) Go to cover page 1.4.5.2 Display Degradation Over the life of the product , variation of the parameters 1.4.5.6 Smudges, Streaks and Smears specified in Panel specification shall be maintained When viewing the panel oriented so as to maximize within reasonable limits.The panel must not exhibit any...
  • Page 9: Osd Menu

    ACER P243W 2 OSD Menu Go to cover page 2.1 MAIN OSD MENU Outline: The description for control function:...
  • Page 10 2. OSD Manu (continued) ACER P243W Go to cover page...
  • Page 11: Exploded Diagram

    ACER P243W 3. Exploded Diagram Go to cover page 3.1 Packing Exploded Diagram...
  • Page 12 ACER P243W 3. Exploded Diagram (continued) Go to cover page 3.2 Product Exploded Diagram...
  • Page 13: Assembly And Disassembly Procedures

    ACER P243W 4. Assembly and Disassembly Procedures Go to cover page 4.1 Assembly procedures: Use a Phillips-head screwdriver screwed the Connect the cable between power board(P802) No.1~4 screws till that interface board and bracket and interface board (P301) chassis base firmly attached.
  • Page 14 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page Connect cable into inverter board(CN001) Take an inverter shielding bracket to cover the inverter board Use a Phillips-head screwdriver screwed the No.1~6 screws till that inverter shielding bracket and bracket chassis base firmly attached.
  • Page 15 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page Take a key function board to hook with front Use a Phillips-head screwdriver screwed the No.1~4 screws on both side and assemble the bezeland connect to key function cable.
  • Page 16 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page Assemble the hinge cover into both two sides Take two cushion foams; one is held the above side of LCD monitor, and another is held the below side.
  • Page 17 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page 4.2 Disassembly procedures ut returned unit on a protective cushion,then Open the carton with a proper tool. remove LDPE+EPE bag. Tear off tapes to remove the screen protector...
  • Page 18 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page Hold the one upside corner of the front bezel after Put the dissembled monitor closed to by myself separating the upside of the front bezel Using properly force to pull up front bezel that will...
  • Page 19 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page Use a Hex-head screwdriver unscrewed 5 screws to Unplug 6 lamp cables release the DVI ,D-SUB and HDMI connectors (No1~4Hex Nut screws Size=M3x8;Torque=6.5 0.5KGFxCM). (No.5 screw size=M3x8; Torque= 6.5 0.5KGFxCM).
  • Page 20 ACER P243W 4. Assembly and Disassembly Procedures (continued) Go to cover page Use a Phillips-head screwdriver unscrewed the Examine the panel surface accoring to inspection No.1~4 screws to release the interface board. criteria. Put it aside. (No1~4 screw size=M3x6; Torque=9~10KGFxCM).
  • Page 21: Troubleshooting

    ACER P243W 5. Troubleshooting Go to cover page 5.1 No display on the screen (Screen is black and colour of LED is amber.) Does OSM display upon pressing Proceed to 5.5 Abnormal OSM display section. the MENU button? Check if the sync signal output...
  • Page 22 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.) Check if the backlight is slightly lightened from upper Proceed to 5.3 Checking the backlight unit section...
  • Page 23 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.3 Check the backlight unit Failure Point Check the BKLT_EN signal of Does the I306 pin16 rectangle input P301 pin11 at TTL output a TTLvoltage level Printed wire is broken high level.
  • Page 24: Abnormal Screen

    ACER P243W 5. Troubleshooting (continued) Go to cover page 5.4 Abnormal Screen: Failure Point Check R.G.B video signals output from PC host 1. Check connected PC host if there’s no R.G.B to D-Sub R.G.B connector signals output. 2. Video signal cable disconnected.
  • Page 25 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.5 Abnormal OSM display - OSD Adjusment Problem Failure Point Check the input TTL level 1. Printed wire is broken between P303 pin 2 and I306 pin 87. whether if it was altered upon 2.
  • Page 26 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.6 Abnormal Plug and Play Operation 5.6.1 Abnormal DDC2 (D-SUB) Failure Point Confirm the output of serial data on I312 pin6 synchronize SCLK at I312 is defected TTL level Failure Point 1.
  • Page 27 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.7 Checking the interface circuit of sync signal 5.7.1 Checking the control circuit of horizontal sync pulse Failure Point 1. Video cable is defected. Check the horizontal 2. Printed wire is broken between P304 pin13 and I314 pin46.
  • Page 28 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.8 Checking the resolution change IC movement Is there +3.3V Supplied on I314 pin107, pin48, pin61, pin250, pin12, pin70, Proceed to 5.9 Checking the DC/DC converter pin170, pin184, pin203, pin216, circuit section...
  • Page 29 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.9 Checking the DC/DC converter circuit Failure Point Printed wire is broken between Check if the 5V is output P301 pin1, pin2, pin3, pin4 and from P301 pin1, pin2, pin3, pin4 I301, I303, I320 pin3.
  • Page 30 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.10 Checking the inverter board circuit Does 22V output pin have voltage around 20V? Check F101, I101, Q110, Q111, Q112, Does On/Off pin have voltage over 3V? Q113 and repair them if be damaged Does brightness pin have voltage in the range of 0V~3.2V?
  • Page 31 ACER P243W 5. Troubleshooting (continued) Go to cover page 5.11 HDMI signal check 5.11.1 No video Failure Point Check the TMDS signal from computer input on 1.Check the host PC to see if there’s no TMDS HDMI connector signal output 2.HDMI cabled disconnected.