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Acer B223W Service Manual

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Acer
Acer –LCD-B223W

Service Manual

LCD Monitor Acer B223W
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  Summary of Contents for Acer B223W

  • Page 1: Service Manual

    Acer Acer –LCD-B223W Service Manual LCD Monitor Acer B223W - 0 -...
  • Page 2: Table Of Contents

    Copyright 2006 InnoLux Tech. Corp. Ltd All Rights Reserved This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of InnoLux Tech. Corp. Ltd. Acer B223W Service Manual...
  • Page 3: Important Safety Notice

    Acer Acer –LCD-B223W Important Safety Notice 1. Safety precautions This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user.
  • Page 4: Product Specification

    Acer Acer –LCD-B223W 01 Product Specification 1. General: BV223W series LCD monitor is designed with a wide screen 22.0” WSXGA+ TFT LCD panel, LVDS interface, Analog RGB signal input. It featured with embedded universal AC power supply. This monitor can support maximum resolution up to 1680 x 1050@60Hz.
  • Page 5: Electrostatic Discharge Requirements

    Acer Acer –LCD-B223W Note 2: Altitude spec must not over panel spec. Figure 1 Absolute Ratings of Environment 2.1 Safety, EMC, Ergonomics and Compatibility Requirements cUL, UL, CE, CB, CCC, TUV/GS, TUV/EGO, Safety & EMC TUV/ISO-13406-2, C-Tick (N214), VCCI, FCC, CE, CCC,...
  • Page 6 Acer Acer –LCD-B223W (DC output full loading and nominal AC input voltage range) 3.1.6 Ripple and Noise Total composite ripple and noise less than 320mV for +16V output, and less than 150mV for +5V output, and 50mV for +3.3V output tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic. Capacitors and measured band-width with DC-20MHz 3.1.7 DC Output Voltage and Current...
  • Page 7: White Balance

    Acer Acer –LCD-B223W On Load Function: Item Symbol Min. Typ. Max. Unit Remark Input Current Frequency 40.0 45.0 @Max-Load Output Current for PWM dimming control mArms One Lamp mode: 2mA≤I ≤8mA Operating Voltage Vo Vrms Brightness PWM 100% duty Kick Off Voltage @Vin=16.0V...
  • Page 8: Video Signals

    Acer Acer –LCD-B223W L/10 W/10 4. Input / Output Signal Specifications 4.1 Video signals Analog RGB signal: 0.7Vp-p (Input impedance = 75 Ohm) Sync: TTL level (Input impedance ≧ 1k Ohm) Positive and negative sync of Separate Horizontal/Vertical Sync Digital : TMDS Signal: (min) ±200mVpp@24Bit...
  • Page 9 Acer Acer –LCD-B223W UXGA 1600*1200@60Hz 75.000 60.000 162.000 WXGA 1360*768@60Hz 47.712 60.015 85.5 1440*900(Red)@60Hz 55.469 59.901 88.75 WXGA+ 1440*900@75Hz 70.635 74.984 136.75 WSXGA+ 1680*1050@60Hz 65.290 59.954 146.250 IBM MODES 640*350@70Hz 31.469 70.087 25.175 720x400@70Hz 31.469 70.087 28.322 MAC MODES 66.667 30.240...
  • Page 10: Function Specifications

    Acer Acer –LCD-B223W V223W DVI 5. Function Specifications All the tests to verify specifications in this section shall be performed under the following standard conditions unless otherwise noted. The standard conditions are: Temperature : 25 ± 5°C Warm-up time : 30 minutes minimum...
  • Page 11 “ACER e Color Management” and “User” to instead “Contrast” and “Brightness” separately. When press “ACER e Color Management” to show “e Color OSD”, and press “User” to show OSD interface before. The translations of “ACER e [MENU] Color Management” and “User” are always English.
  • Page 12 Acer Acer –LCD-B223W Focus 0 ~ 100 Depend on each timing Image Clock 50 ○ 0 ~ 100 Horizontal 0 ~ 100 Position Vertical 0 ~ 100 Depend on each timing Warm (6500K) Cool (9300K) Color 0 ~ 100 User...
  • Page 13 Acer Acer –LCD-B223W 6. SOP of firmware upgrade 6.1 Operational condition: Equipment: PC, ISP card, signal cable and power cable. ESD requirements: antistatic wrists, antistatic gloves (fingers), and connecting cable Name of ISP program: RTDTool_4.6.exe Manufacture of FW IC : RTD 2525L Operational steps: 1.
  • Page 14 Acer Acer –LCD-B223W Secondly ﹐ download FW software: first select “READ”, and then load FW software in Rooter (Fig.2). FW software rooter Software Checksum Thirdly, select “Connect” and enter ISP MODE as in the following Figure 3.
  • Page 15 Acer Acer –LCD-B223W Fourthly, select “AUTO”, and keep its default value. Click “RUN” for beginning programming. There will be prompting if programming is OK. Note: if programming fails or success rate is not high, click “Config” and adjust its speed in “E2PROM...
  • Page 16 Acer Acer –LCD-B223W After connecting, AC ON, DC ON ◆Flowing chart Open ISP program Choose manufacturer and model of FW IC LOAD FW software Click Connect and enter ISP MODE Choose Config Click AUTO and RUN for and adjust beginning programming...
  • Page 17: Flat Panel Specification

    Acer Acer –LCD-B223W 02. Flat Panel Specification...
  • Page 18 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 3/23 Contents: A. General Specification B. Electrical Specifications 1. Pin assignment 2. Absolute maximum ratings 3. Electrical characteristics a. Typical operating conditions b. Display color vs. input data signals c.
  • Page 19 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 4/23 A. General Specification Item Specification Remark Display resolution (pixel) 1680(H) X 1050(V), WSXGA+ resolution Active area (mm) 473.76(H) X 296.1(V) Screen size (inch) 22 inches diagonal Pixel pitch (mm) 0.282(H) X 0.282(V) Color configuration...
  • Page 20 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 5/23 B. Electrical Specifications 1.Pin assignment Connector JAE FI-XB30SSRL-HF16, Foxconn GS23302-0311R-7F or mechanical interface equivalent connector. Pin No. Symbol Description Frame Ground RXinO0- -LVDS differential data input, Chan 0-Odd RXinO0+ +LVDS differential data input, Chan 0-Odd RXinO1-...
  • Page 21 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 6/23 Rear view of LCM ALL RIGHTS RESERVED ANY PORTION OF THIS DOCUMENT SHALL NOT BE REPRODUCED, COPIED, OR TRANSFORMED TO ANY OTHER FORMS WITHOUT PRIOR WRITTEN PERMISSION FROM INNOLUX DISPLAY CORPORATION.
  • Page 22 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 7/23 2. Absolute maximum ratings Values Unit Parameter Symbol Remark Min. Max. Power voltage -0.3 At 25°C Input signal voltage -0.3 At 25°C Operating temperature ° C Note 1 Storage temperature - 25...
  • Page 23 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 8/23 3. Electrical characteristics a. Typical operating conditions Item Symbol Min. Typ. Max. Unit Remark Input Voltage Permissive Power Input Ripple 0.25 Black Note 1 Input Current White Note 2 Mosaic...
  • Page 24 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 9/23 Note 4 : test condition : (1) V = 5 V, V rising time = 470 s ± 10% (2) Pattern: Mosaic pattern Ton=470 (3) Test circuit 2SK1059 VDD ( LCD INPUT) FUSE...
  • Page 25 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 10/23 Note 6 : Power on sequence for LCD V Parameter Value Unit Min. Typ. Max. 1000 ALL RIGHTS RESERVED ANY PORTION OF THIS DOCUMENT SHALL NOT BE REPRODUCED, COPIED, OR TRANSFORMED TO ANY OTHER FORMS WITHOUT PRIOR WRITTEN PERMISSION FROM INNOLUX DISPLAY CORPORATION.
  • Page 26 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 11/23 b. Display color vs. input data signals The brightness of each primary color (red, green and blue) is based on the 8-bit gray scale data input for the color; the higher the binary input, the brighter the color.
  • Page 27 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 12/23 c. Input signal timing Support Input Timing Table The input signal timing specifications are shown as the following table and timing diagram. Signal Item Description Min.
  • Page 28 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 13/23 d. Display Position D(1, 1) D(2, 1) …… D(840, 1) …… D(1679, 1) D(1680, 1) D(1, 2) D(2, 2) …… D(840, 2) …… D(1679, 2) D(1680, 2) ……...
  • Page 29 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 14/23 Note 2: Test equipment: AS-114B Note 3: The voltage shown above should be applied to the lamp for more than 1 second after startup. Otherwise, the lamp may not be turned on normally. Note 4: Inverter should provide more than min.
  • Page 30 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 15/23 C. Optical Specifications Specification Item Symbol Condition Unit Remark Min. Typ. Max. Response time Note 4 Tr+Tf θ= 0 Contrast ratio 1000 Note 3,5 CR 10 CR 5 CR 10 Bottom...
  • Page 31 SPEC NO. M T 2 2 0W W 0 1 V. 0 PAG E 16/23 "Black" "White" "White" 100% Note 5: Definition of contrast ratio: Contrast ratio is calculated by the following formula. Brightness on the "white" state Contrast ratio (CR)= Brightness on the "black"...
  • Page 32 SP EC NO. M T 2 2 0 W W 0 1 V. 0 PAG E 17/23 Note 9: A’ B’ 127 gray level 127 gray level 0 gray level l / L x 100%= 2% max., L and L are brightness at location A and A’...
  • Page 33 SP EC NO. M T 2 2 0W W 0 1 V. 0 PAG E : 18/23 D. Reliability test items Test Item Test Condition Judgment Remark 60°C, 240Hrs High temperature storage Note 1 Note 2 -25°C, 240Hrs Low temperature storage Note 1 Note 2 High temperature &...
  • Page 34 SP EC NO. M T 2 2 0W W 0 1 V. 0 PAG E : 19/23 E. Safety 1. Sharp Edge Requirements There will be no sharp edges or corners on the display assembly that could cause injury. 2. Materials a.
  • Page 35: Exploded Diagram

    Acer Acer –LCD-B223W 03 Exploded Diagram 3.1 Screw List Fixed Item Part No. Description T(kg*cm Remark 509146306102R SCREW P CROSS W/W-SPR FOR POWER 3.75±0.25 M3*6 Zn D-SUB CON&DVI 509000000700R BOLT,#4-40x11.8,Ni 4.0±0.25 SCREW,P,CROSS,M4*12,BLK-Zn,RO 50911661210 10.5 ± 0.25 For back-cover to STAND ASSY...
  • Page 36 Acer Acer –LCD-B223W 3.2. LCD Exploded drawing (All)
  • Page 37: Troubleshooting

    Acer Acer –LCD-B223W 04 Troubleshooting 1. No Power & LED Off Unstable power Check sampling Check R822, Circuit R823, R824 Change R822,R823, R824 Check the C pin Check the R pin voltage of IC803 Change voltage of IC803 if 3V IC803 about 2.5V...
  • Page 38 Acer Acer –LCD-B223W 2. No raster N o b a c k li g h t Y e s N o p o w e r su p p ly t o C h e c k t h e c a b l e t h a t fro m...
  • Page 39 Acer Acer –LCD-B223W 3.Black screen B l a c k s c r e e n C h e c k p o w e r s u p p l y :p i n 1 ,2 o f P o w e r f a i l...
  • Page 40: Bad Screen

    Acer Acer –LCD-B223W 4.Bad Screen Black screen Check p ower supply:pin 1,2 of Pow er fail CN10 1 Y ES Check pow er su pply Check F B102 ,FB10 3, for U1 04 Y ES Ch eck reset (pin1 08)
  • Page 41 Acer Acer –LCD-B223W 5. White screen White screen LVDS Cable Workmanship Reinsert Change LVDS cable NG LVDSCable Check VLCD Check LVDS Panel Fail is 5V signal Check Panel-Enable of U104 Fail U104(pin73) Check Q101,Q103,Q104, R108,R104,C110,C...
  • Page 42 Acer Acer –LCD-B223W 6. No Sound No sound Pin1,pin2 of No sound signal P701 input Check 16V Power Pin13 of U701 supply Check R141,R142,R157,R Check pin7,pin8 of CN101 158 of IF board Check Check Pin3,Pin10 of Q701,Q702,Q703,Q U701 704,R701,R702, Check C705,C707...
  • Page 43: Spare Parts List

    Acer Acer –LCD-B223W 05 Spare parts List 8221D271A1E0R OEM PART NO DESCRIPTION ET.LBM0C.003 791411301601R PCBA,I/F BOARD(V2,EMEA,W/SPK)LE22D2-612 791411301602R PCBA,I/F BOARD(V2,W/SPK),LE22D2-612 ROHS 791411401610R PCBA,P/I BOARD,W/SPK,LE22D2-612 ROHS 791401500000R PCBA,KEYPAD BOARD,LE9D0-612 ROHS 453070801190R PWRCORD 16A/250V BLK 6FT VDE/KTL H05VV-F 453070800230R PWRCORD 5A/250V BLK 6FT UK3Gx.75mm(SP60/...
  • Page 44: Schematics And Layouts

    Acer Acer –LCD-B223W 06 Schematics and Layouts 6.1 PI BD Layout...
  • Page 45 Acer Acer –LCD-B223W 6.2 IF BD Layout...
  • Page 46 F801 C809 R824 2.5A/250V 10u/35V 10K 1% C801 C802 1000p/400V 1000p/400V CN801 VCC5V TO SCALER BD CN101 B223W InnoLux C825 0.1/50V SW801 Document Number : SIZE : APPRO BY : SW DPST ON/OFF ON/OFF BRIGHTNESS 3 VOLUME MUTE TITLE :...
  • Page 47 10K 1% R519 C519 R539 0.1/50V 5K1 1% InnoLux D506 BAT54 Document Number : SIZE : APPRO BY : R538 10K 1% C517 Custom 6800p/50V TITLE : CHECK BY : Inverter B223W DATE : DRAWN BY : 2008-01-23 Rev : SHEET...
  • Page 48 +16V VCC16V +16V R734 C703 0R2 1W C702 C712 0.1/50V 220u/25V 220u/25V R701 Line_L P702/NC U701 TDA8496SA Line_R R732 220/NC Left_in C704 0.47/16V R702 Left_Out D701 D702 OUTL C706 0.47/16V 220u/25V C705 R733 220/NC Right_Out Right_in OUTR 220u/25V S_GND C707 ST-510 FB701 600Ω...
  • Page 49 Pin Define IF CN102 CON CN301 CON CN302 KEYPD CON 1x8p 1.25mm180degree 2x4p 2.0mm 180degree 2x4p 2.0mm 180degree 2x4p 2.0mm 90degree CN302 CN301 MENU RIGHT&Left Auto E-color LED_A LED_G POWER 2x4P 2.0mm 2x4P 2.0mm From IF BD To Keypad InnoLux Document Number : SIZE : APPRO BY :...
  • Page 50: Assembly And Disassembly

    Acer Acer –LCD-B223W 7.0 Assembly and Disassembly Description Sequence Item Photo Procedures (1).Take panel out of box and place it on the foam. (2).Tear open the PE bag and put it in the designated carton. 22"MT220WW0 Place (3).Place panel on the foam like the...
  • Page 51 Acer Acer –LCD-B223W Assembly and Disassembly (continue) 1.Reverse the panel by 180 degree,put the surface of panel upsides and insert front bezel in the panel. 2.Reverse the panel by 180 degree using both hands,put the surface of panel downsides and make sure FFC interface...
  • Page 52 Acer Acer –LCD-B223W Assembly and Disassembly (continue) PCBA,P/I Insert powerboard into the designated chassis BOARD,W /O location of chassis ,like the attached 791411401600R &powebo SPK,LE22D2- Picture 612 ROHS Connect Connent powerboard with the relevant mainboar PIN in the mainboard like the attached d&powerb...
  • Page 53 Acer Acer –LCD-B223W Assembly and Disassembly (continue) Twist Fix 3 pcs of screws separately on the SCREW,P,CRO 509146306200R poweboard and mainboard like the SS,W/WAS,M3* PCBA attached Picture1 6,Zn-Cc screw Twist Paste FFC wire on the disignated screw for location like the attached Picture...
  • Page 54 Acer Acer –LCD-B223W Assembly and Disassembly (continue) Thread lamp wire into the relevant hole of Fix chassis chassis like the attached Picture 1)Fix chassis on the back of panel and front bezel Fix chassis 2)Put lamp wire and FFC wire in order as picture 1.Tear off the adhensive tape of FFC...
  • Page 55 Acer Acer –LCD-B223W Assembly and Disassembly (continue) make sure the 1)Insert keypad wire into the relevant PIN red cabel in left in the keypad Insert ( 2)Fix button on the relevant position of keypad assemble Cable ( 3)Confirm if keypad is inserted properly...