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Acer B203W Service Manual

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Acer B203W
Service Guide
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  • Page 1 Acer B203W Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision History TPV model TA7AM6D8W7AYDN/ Apr.-2-2008 Initial Release TA7AM6D8W7AYHN...
  • 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

    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 Installation Attaching/Removing the base Chapter 2 Operating Instructions External Controls Front Panel Controls eColor Management (OSD) How to Adjust a Setting LOGO...
  • Page 7: Chapter 1 Monitor Features

    50k hours or more. Panel Signal Interface Sync Type Color Temp User Adjust Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel Chart of B203W M201EW02 V80C SZ AUO D-Sub 15-pin/DVI 24-pin Separate / Compatible Support DDC2B TA7AM6D8W7AYDN(Yes) TA7AM6D8W7AYHN(No) TA7AM6D8W7AYDN(Yes) TA7AM6D8W7AYHN(No)
  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Viewing distance Warm up time Analog Input signal Control temperature Brightness control User contrast control Picture position and size Viewing angle AC Supply voltage Ambient temperature Humidity...
  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification Driving system Active Display Area Pixel pitch LCD Panel Contrast Ratio Response time Luminance of White Separate Sync. Input H-Frequency V-Frequency Viewing angle CR=10: H:170 / V:170 ( type) ;CR=5: H:176 / V:176 ( type) Display Colors 16.7M Display mode 1680 x 1050 @60Hz...
  • Page 10: Lcd Panel Specification

    LCD Panel Specification This specification applies to the 20.1 inch-wide Color TFT-LCD Module M201EW02. The display supports the WSXGA+ (1680(H) x 1050(V)) screen format and 16.7M colors (RGB 6-bits+Hi-RFC data). All input signals are 2 Channel LVDS interface compatible. This module does not contain an inverter card for backlight.
  • Page 11 Electrical Characteristics TFT LCD Module-Power Specification Backlight Unit...
  • Page 12 Optical Specifications...
  • Page 13: Support Timing

    Support Timing Mode Resolution 640x480@60Hz 640x480@72Hz 640x480@75Hz 800x600@56Hz 800x600@60Hz SVGA 800x600@72Hz 800x600@75Hz 1024x768@60Hz 1024x768@70Hz 1024x768@75Hz VESA 1152x864@75Hz 1280x1024@60Hz 1280x1024@75Hz SXGA 1440x900@60Hz 1440x900@75Hz UXGA 1600x1200@60Hz WSXGA+ 1680x1050@60Hz Horizontal Nominal Sync Frequency Polarity Total +/- 0.5kHz 800 x 525 31.469 832 x 520 37.861 840 x 500 37.500...
  • Page 14: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, and 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 Crystal LCD Interface (X401) (CN301) 14.31818MHZ Key Board U401 Control Scalar IC TSUM5PFHL-LF (CN402) (Include MCU ,ADC, OSD) · H sync V sync D-Sub Connector Connector (CN101) (CN102)
  • 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 CN402 WAFER CN701 WAFER 9P RIGHT ANELE PITCH CN301 CONNECTOR CN101 D-SUB 15PIN U401 IC TSUM5PFHL-LF Symbol CN102 DVI 24PIN CONNECTOR U103/U104/U105/ IC AZC099-04S SOT23-6L U106/U107 U403 IC M24C04-WMN6TP SO8 U402 SST25LF020A-33-4C-SAE U701 AP1117E33LA Description...
  • 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 lamp connectors and the screw. (Fig 3-4) 4. Remove the screws to remove the panel. Put attention to the LVDS cable.(Fig 5) 5. Remove the screws to remove the main board and power board.( Fig 6) Fig 3 Fig 4 Fig 5 Fig 6...
  • Page 30: Chapter 4 Troubleshooting

    Troubleshooting This chapter provides troubleshooting information for the B203W: 1. No Power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Measure U701 Pin2=3.3V, Check if X401 oscillate...
  • Page 31 2. No Picture (LED is orange) No picture The button if under control Measure U701 Pin2=3.3V, Check X401 oscillate waveform is normal Check HS/VS from CN101 is normal Replace U401 X401 oscillate waveform is normal Check reset circuit of U401 is normal Replace U401 Replace U701 Replace X401...
  • Page 32 3. Panel Power Circuit White screen Measure Q301 base is low level? Check CN301 is solder and Q301,Q302 is OK? Check Correspondent component. Replace PANEL X401 oscillate waveform is normal Check reset circuit of U401 is normal Replace U401 Replace X401 Check Correspondent component.
  • Page 33 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 34 5. Power Board No power No power Check to CN902 Pin10,11 =14V and Pin6,7 = 5 V Check AC line volt 120V or 220V Check the voltage of C905(+) Check start voltage for the Pin2 of IC901 Check the auxiliary voltage is smaller than 20V Check T901,D906, D907, Q903,ZD921,ZD922,IC904,IC903 Check Interface board Change F901, Check BD901, L901, IC901...
  • Page 35 W/LED No Backlight Check the 14V voltage input Check ON/OFF signal Check IC801 pin12=12V? Check the pin9&10 of IC801 have PWM wave Check the resonant wave of pin3 & pin7 for T801 Check the output of T801,T802 Check connecter & lamp Check the adapter Check Interface board Change Q805.Q808 or Q810...
  • Page 36: Chapter 5 Connector Information

    Chapter 5 Connector Information The following figure shows the connector locations on the monitor: D-SUB connector...
  • Page 37 DVI 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: B203W)
  • 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...
  • Page 41: Chapter 7 Schematic Diagram

    Schematic Diagram Main Board H_Sy nc R102 0R05 1/10W 5% V_Sy nc R106 2K2 1/16W 5% CN101 R101 DDC1_SCL DSUB_SCL VGA_PLUG DDC1_SCL DSUB_5V 100R 1/16W 5% VGA_B- VGA_B+ R113 VGA_G- DDC1_SDA DSUB_SDA VGA_G+ DDC1_SDA VGA_R- 100R 1/16W 5% VGA_R+ DB15 Prevent NC contact Discharge =>...
  • Page 42 PA[0..9] PA[0..9] LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M R303 10K 1/16W 5% R304 R302 4K7 1/16W 5% 47K 1/16W 5% Q302 PPWR_ON# 2N3906S-RTK/PS PB[0..9] PB[0..9] LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M CMVCC U301 C302 0.1uF/16V...
  • Page 43 CMVCC C710 0.1uF 16V FB702 300 OHM CN701 SM340A D701 MVCC CMVCC CMVCC BKLT-VBRI R709 BKLT-EN R710 NC PANEL_ID# Volume# Volume# Mute CONN C713 C701 lock type C712 0.1uF/16V DGND 1,2,3 VCC3.3 VCC3.3 R702 10K 1/16W 5% R703 BKLT-EN 10K 1/16W 5% C702 R704 on_BACKLIGHT 2...
  • Page 44 VDDP VCC3.3 VCC3.3 C403 C404 C406 C402 10uF/50V 0.1uF/16V C405 0.1uF/16V VDVI VMPLL VPLL 0.1uF/16V 0.1uF/16V DSUB_R+ RIN0P DSUB_R- RIN0M DSUB_G+ GIN0P DSUB_G- GIN0M DSUB_SOG SOGIN0 DSUB_B+ BIN0P DSUB_B- BIN0M DSUB_H HSY NC0 DSUB_V VSYNC0 DDC1_SDA DDCA_SDA/RS232_TX DDC1_SCL DDCA_SCL/rs232_RX RX2P RX2N RX1P RX1N...
  • Page 45 Power board BD901 2KBP08M C905 R904 100uF/450V 300K OHM 1/4W C938 R932 1500pF/1KV 300K OHM 1/4W C904 C907 ZD906 0.1uF L901 R933 300K OHM 1/4W 4.0mH IC901 C903 0.47uF/275V COMP LD7552BPS R915 100K OHM 1% 1/8W R903 R902 R901 680K OHM 1/4W 680K OHM 1/4W 680K OHM 1/4W C928...
  • Page 46 F801 0R05 1/4W +14V R804 3.6K OHM 1% 1/10W 100R 1/8W Q808 PDTA144WK Q805 PDTC144WK ON/OFF C807 0.1uF/25V R827 1K 1/10W 1% Q806 PMBS3904 R813 R808 10K 1/10W 1% 10K 1/10W 1% D817 LL4148 Q810 RK7002 R811 2.4K OHM 1% 1/10W D809 LL4148 R802...
  • Page 47 R608 0R05 1/8W CN602 R606 10K 1/10W 5% R607 10K 1/10W 5% PHONEJACK CN604 ㎝ CN603   Layout change R609 R610 R611 R612 CN604 add R616 EAR-LOUT EAR-ROUT SEL-BTL change R601 R613 NC/CONN CN603 SEL-BTL 330 OHM +-5% 1/10W EAR-LOUT EAR-ROUT PHONEJACK 330 OHM +-5% 1/10W...
  • Page 48 Key board CN001 LBADC1 LBADC2 POWER_Key LED_BLUE# LED_RED# C001 CONN MENU LBADC1 VOL- (GND) VOL+ LBADC2 AUTO ECOLOR (GND) CN001 CONNECTOR ECOLOR AUTO MENU VOL- ZD001 UDZSNP5.6B add ZD001 and ZD002 for ESD solution LED001 LED ZD002 UDZSNP5.6B LED_BLUE# LED_RED# C002 C003 C004...