Acer B223W Service Manual
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Acer B223W Service Manual

Acer B223W Service Manual

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Acer B223W (Dual-USB)
Service Guide
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Summary of Contents for Acer B223W

  • Page 1 Acer B223W (Dual-USB) Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision History TPV model May.-27-2008 Initial Release TC8AMAD8W7ABBN...
  • Page 3 Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.
  • Page 4 DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer machines. Warning: (For FCC Certified Models) Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
  • Page 5 Precautions Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance.

  • Page 6: Table Of Contents

    Table Of Contents Chapter 1 Monitor Features ………………………………………… Introduction ……………………………………… Electrical Requirements ……………………………………… LCD Monitor General Specification ……………………………………… LCD Panel Specification ……………………………………… Support Timing ……………………………………… Monitor Block Diagram ……………………………………… Main Board Diagram ……………………………………… Software Flow chart ……………………………………… Main Board Layout ………………………………………...

  • Page 7: Chapter 1 Monitor Features

    This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more. Chart of B223W Panel M220EW01 V00 TW AUO...

  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Dark room (< 1 cd/m2) Viewing distance 35-50cm Warm up time ＞30 minutes Analog Input signal 700 mVss Control temperature 6500° K User brightness control The value under user mode Set to The value under user mode, which allows that the brightest...

  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification Driving system TFT Color LCD Active Display Area 473.76(H) x 296.1(V) Pixel pitch 0.282(H) x 0.282(W) LCD Panel Contrast Ratio 1000 : 1 Response time Luminance of White 300(Typ.) cd/㎡ Separate Sync. H/V TTL Input H-Frequency 30kHz –...

  • Page 10: Lcd Panel Specification

    LCD Panel Specification This specification applies to the 22 inch-wide Color TFT-LCD Module M220EW01. The display supports the WSXGA+ (1680(H) x 1050(V)) screen format and 16.7M colors. All input signals are 2 Channel LVDS interface compatible. This module does not contain an inverter card for backlight. General Specifications...
  • Page 11 Electrical Characteristics...
  • Page 12 Optical Specifications...

  • Page 13: Support Timing

    Support Timing Horizontal Vertical Nominal Sync Nominal Sync Nominal Frequency Polarity Freq. Polarity Pixel Clock Mode Resolution Total +/- 0.5kHz +/- 1 Hz (MHz) 640x480@60Hz 800 x 525 31.469 59.940 25.175 640x480@72Hz 832 x 520 37.861 72.809 31.500 640x480@75Hz 840 x 500 37.500 75.00 31.500...

  • Page 14: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, a USB board, a USB display adapter and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

  • Page 15: Main Board Diagram

    Main Board Diagram LCD PANEL Crystal14.31818MHz (CN301) (X201) FLASH ROM Scalar IC TSUMU58BWHL-LF PM25LV010A (Include ADC, OSD, MCU) EPR_SDA (U402) (U202) EPR_SCL H sync V sync EEPROM M24C04-WMN6TP D-Sub (U204) Connector (CN101)

  • Page 16: Software Flow Chart

    Software Flow Chart...
  • Page 17 Remark: 1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.

  • Page 18: Main Board Layout

    Main Board Layout Symbol Description Symbol Description CN201 WAFER U202 IC TSUMU58BWHL-LF PQFP-100 CN401 WAFER 9P RIGHT ANELE PITCH U702 IC AZ1117D-1.8-E1 CN301 CONNECTOR U701 AP1117E33LA CN101 D-SUB 15PIN U204 IC M24C04-WMN6TP SO8 CN103 CONN W TO B 12P*2 P*2.0 4504-2 U102 M24C02-WMN6TP U101...

  • Page 19: Installation

    Installation To install the monitor on your host system, please follow the steps below: Steps 1.Connect the video cable A: Make sure both the monitor and computer are switched off. B: Connect the VGA video cable to the computer. C: Connect the digital cable (only for dual-input models). (1) Make sure both the monitor and computer are switched off.

  • Page 20: Attaching/Removing The Base

    Attaching/Removing The Base Install: Align the base with the stand and push the base towards the top of the monitor, and then rotate the base clockwise. Tighten the screw clockwise. Remove: Reverse the steps to remove the base. Screen Position Adjustment In order to optimize the best viewing position, you can adjust the height/tilt/swivel/pivot of the monitor.
  • Page 21 Tilt Please see the illustration below for an example of the tilt range. Swivel With the built-in pedestal, you can swivel the monitor for the most comfortable viewing angle. Monitor Pivot Adjust height to the top position before rotation the monitor. Rotate clockwise until the monitor stops at 90°.

  • Page 22: Chapter 2 Operating Instructions

    Chapter 2 Operating Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. •...

  • Page 23: Ecolor Management (Osd)

    eColor Management (OSD)

  • Page 24: How To Adjust A Setting

    How to Adjust a Setting...
  • Page 25 Adjusting the picture...

  • Page 27: Logo

    Logo When the monitor is power on, the LOGO will be showed in the center, and disappear slowly. How To Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feature This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities.

  • Page 28: Chapter 3 Machine Disassembly

    Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the HINGE ASSEMBLY as the following indicator. (Fig 1) Fig 1 2. Remove the back cover and bezel. (Fig 2) Fig 2...
  • Page 29 3. Remove the screws to remove the SHIELD_MAIN. (Fig 3) Fig 3 4. Remove the screws to remove the USB board and USB display adapter. (Fig 4) Fig 4 5. Remove the lamp connectors and release the screw to remove the AC shield. (Fig 5) Fig 5...
  • Page 30 6. Remove the screws to remove the panel. Pay attention to the LVDS cable.(Fig 6) Fig 6 7. Remove the screws to remove the main board and power board.( Fig 7) Fig 7...

  • Page 31: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting This chapter provides troubleshooting information for the B223W: 1. No Power No power Press power key and look if the picture is normal Please reinsert and make sure the 5V and 12V input is normal Reinsert or check the power section Measure U701 Pin2=3.3V and U702 PIN2=1.8V...
  • Page 32 2. No Picture (LED is orange) No picture The button if under X201 oscillate Replace X201 control waveform is normal Check Correspondent Check reset circuit of component U202 is normal Measure U701 PIN2=3.3V and U702 PIN2=1.8V Replace U202 Check X201 oscillate waveform is normal Replace U701, U702 Replace X201...
  • Page 33 3. Panel Power Circuit White screen Measure Q304 base Check X201 oscillate waveform is normal is low level? Replace X201 Check Q302, Q303,Q304 is Check reset circuit of broken or CN301 solder? U202 is normal Check Correspondent Check Correspondent component. component.
  • Page 34 4. Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Board Replace Button Switch Is Button Switch normally? Replace Key Board Is Key Pad Board normally? Check Main Board...
  • Page 35 5. Power Board No power No power Check CN902 Pin6, 7 = 5 V Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, L901, IC901 Check the voltage of C905(+) Check bridge retified circuit Check start voltage for the Pin2 of IC901 Change IC901 Check the auxiliary voltage is smaller than 20V Check IC901...
  • Page 36 W/LED No Backlight Check the 14V voltage input from the adapter part Check the adapter Check ON/OFF signal Check Interface board Check if IC801 pin12 voltage is normal Change Q805.Q808 or Q810 Check the pin9&10 of IC801 have PWM wave Change Q801/Q804/Q811/Q812 Replace IC801 Check the resonant wave...

  • Page 37: Chapter 5 Connector Information

    Chapter 5 Connector Information The following figure shows the connector locations on the monitor: D-SUB connector...

  • Page 38: Chapter 6 Fru (Field Replacement Unit) List

    NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it. Exploded Diagram (Model: B223W)
  • Page 39 Part List Above picture show the description of the following component. Item Picture Description Hinge Assembly Main Frame Panel...
  • Page 40 Power Board Main Board FFC CABLE USB Board...

  • Page 41: Chapter 7 Schematic Diagram

    NC RLZ5.6B DDC_WP 2 NC RLZ5.6B T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size B223W GND POWER DGND G3127-A-X-X-1-080222 TPV MODEL B223W 絬 隔 瓜 絪 腹 715G3127-A Key Component 2.0.INPUT PCB NAME <称爹>...
  • Page 42 120OHM C303 100uF/25V Q301 AO3401L T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size B223W G3127-A-X-X-1-080222 TPV MODEL B223W 絬 隔 瓜 絪 腹 Key Component 3.0.OUTPUT PCB NAME 715G3127-A <称爹> 称爹 Monday , February 25, 2008...
  • Page 43 C408 100uF/25V 100uF/25V 0.1uF/16V 0.1uF/16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size B223W G3127-A-X-X-1-080222 TPV MODEL 絬 隔 瓜 絪 腹 B223W Key Component 4.0.POWER PCB NAME 715G3127-A <称爹> 称爹 Date Friday , May 09, 2008...
  • Page 44 0.1uF/16V 0.1uF/16V M24C04-WMN6TP Near to Connect T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size B223W 絬 隔 瓜 絪 腹 G3127-A-X-X-1-080222 TPV MODEL B223W Key Component 5.0.SCALER PCB NAME 715G3127-A <称爹> 称爹 Monday , February 25, 2008...
  • Page 45 Power board 100 OHM 1/4W R918 R941 R945 R946 R944 1K 1/4W 1K 1/4W 1K 1/4W 1K 1/4W +14V 100 OHM 1/4W R919 L904 C912 1.1uH ZD902 BD901 0.001uF RLZ TE-11 16B 2KBP08M 100 OHM 1/4W R920 C922 C917 C918 680uF/25V 680uF/25V R943...
  • Page 46 C838 1500pF T801 D805 R817 R821 POWER X'FMR BAW56 10K 1/10W 1% 1K 1/10W 1% CN801 CONN R856 F801 15 OHM 1/4W C819 0R05 1/4W 0.0022uF +14V C801 C802 C824 D810 5pF/6KV 470uF/25V 0.1uF R801 D801 R819 R855 1.5K OHM 1% 1/10W BAV99 R804 3.6K OHM 1% 1/10W...
  • Page 47 Key board ZD001 UDZSNP5.6B add ZD001 and ZD002 for ESD solution LED001 LED CN001 ZD002 UDZSNP5.6B LBADC1 R001 2K OHM 1/16W LBADC2 LED_BLUE# POWER_Key LED_RED# LED_BLUE# LED_RED# R002 2K OHM 1/16W C001 C002 C003 C004 C005 CONN R003 1K 1/16W 5% MENU LBADC1 VOL-...
  • Page 48 10uF/16V C006 C007 0.1uF 0.1uF T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL ACER B223W Size G3160-A-X-X-1-080327 TPV MODEL USB8QA2 絬 隔 瓜 絪 腹 Key Component 02.USB SIDE BOARD PCB NAME G3160-A 称爹...

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