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Acer B223W (Dual-USB-HUB AUDIO) Service Guide...
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Service Guide Version and Revision Version Release Date Revision History TPV model May-28-2008 Initial Release TC8MMAD8W7ABPN...
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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.
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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.
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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.
Chapter 1 Monitor Features Introduction Scope This specification defines the requirements for the 22” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector and 24 pin DVI connector, also supports VESA DPMS power management and plug & play function. Description The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no radiation.
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 >30 minutes Warm up time 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...
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 –...
LCD Panel Specification The M220Z1-L03 model is a 22 inch wide TFT-LCD module with a 4-CCFL Backlight Unit and a 30-pin 2ch-LVDS interface. This module supports 1680 x 1050 WSXGA (16:10 wide screen) mode and displays up to 16.7 millions colors.
Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, a USB board 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.
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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.
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.
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.
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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°.
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. •...
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.
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...
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3. Remove the screws to remove the shield_main. (Fig 3) Fig 3 4. Remove the screws to remove the USB board. (Fig 4) Fig 4 5. Remove the lamp connectors and release the screw to remove the AC shield. (Fig 5) Fig 5...
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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...
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 AC of 100-240 is normal Reinsert or check the power section Measure U701 Pin2=3.3V, Measure CN701...
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2. No Picture (LED is orange) No picture The button if under X401 oscillate Replace X401 control waveform is normal Check Correspondent Check reset circuit of component U401 is normal Measure U701 Pin2=3.3V, Replace U401 Check X401 oscillate waveform is normal Replace U701 Replace X401 Check HS/VS from...
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3. Panel Power Circuit White screen Measure Q301 base X401 oscillate waveform is normal is low level? Replace X401 Check CN301 is solder Check reset circuit of and Q301,Q302 is OK? U401 is normal Check Correspondent Check Correspondent component. component. Replace U401 Replace PANEL...
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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...
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5. Power Board No power No power Check to CN902 Pin10,11 =14V and 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...
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W/LED No Backlight Check the 14V voltage input Check the adapter Check ON/OFF signal Check Interface board Check IC801 pin12=12V? 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 of pin3 &...
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)
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Part List Above picture show the description of the following component. Item Picture Description Hinge Assembly Main Frame Panel...
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Power Board Main Board FFC Cable USB Board...