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Acer V203W manual

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Table of contents for the manual

  • Page 1

    1 Acer V203W Service Guide[...]

  • Page 2

    2 Service Guide V ersion and Revision Version Release Date Revision History TPV model A00 Mar .-20-2008 Initial Release TA7ANCD8W7AYNN[...]

  • Page 3

    3 Copyright Copyright © 2003 by Acer Incorpo rated. All rights rese rved. No part of this publi cation may be reproduced, Transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, m echanical, m agnetic, optical, chemical, manual or otherwise, without the [...]

  • Page 4

    4 Preface Before using this information and the produ ct it supp orts, please read the following gene ral information. 1. This Service Guide provides you wi th all technical information relati ng to the BASIC CONFIGURATION decided for Acer's "global" product offering. To better fit local market requirements and e nhan ce product comp[...]

  • Page 5

    5 Precautions z Do not use the monitor near water , e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. z Do not place the monitor on an unsta ble trolley , sta nd, or table. I f the monitor falls, it can injure a person and cause serious damage to the appliance. Use only a trolley or st and recommended by [...]

  • Page 6

    6 T able Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirement s ……………………………………… 8 LCD Monitor General S pecification ……………………………………… 9 LCD Panel S pecification ………[...]

  • Page 7

    7 Monitor Features Introduction Scope This specification defines the requirements for the 20” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor . This monitor ca n be directly connecte d to general 15-pin D-sub VGA connector , also supports VESA DPMS power management and plug & play function. Description The LCD moni[...]

  • Page 8

    8 Electrical Requirement s Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwi se specified. Ambient light Dark room (< 1 cd/m2) Viewing distance 40 cm for LCD performance, 20 cm for L CD failures Warm up time ＞ 30 minutes Analog Input signal 700 mVss Control temperature 6500 ° K (e-Color set[...]

  • Page 9

    9 LCD Monitor General Specification Driving system TFT Col or LCD Active Display Area 433.41(H) x 270.90(V ) Pixel pitch 0.258(H) x 0.258(W) Contrast Ratio 1000 : 1 Response ti me 5ms LCD Panel Luminance of White 300(T yp.) cd/ ㎡ Separate Sync. H/V TTL H-Frequency 30kHz – 83kHz Input V -Frequency 56-75Hz Viewing a ngle CR=10: H:170 / V :170 ( t[...]

  • Page 10

    10 LCD Panel Specification This specification applies to the 20.1 inch-wi de Color TFT-LCD Module M20 1EW02. The display supports the WSXGA+ (1680(H) x 1050(V)) scre en format and 16.7M col o rs (RGB 6-bits+Hi-RFC data). All input signals are 2 Channel LVDS interface compa tible. This module does not contain an in verter card for backlight. General[...]

  • Page 11

    11 Electrical Characteristics TFT LCD Module － Power Specification Backlight Unit[...]

  • Page 12

    12 Optical Specifications[...]

  • Page 13

    13 Support Timing Horizont al V ertical Mode Resolution T otal Nominal Frequency +/- 0.5kHz Sync Polarity Nominal Freq. +/- 1 Hz Sync Polarity Nominal Pixel Clock (MHz) 640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175 640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500 VGA 640x480@75Hz 840 x 500 37.500 N 75.00 N 31.500 800x600@56Hz 1024 x 625 35.156 N/P[...]

  • Page 14

    14 Monitor Block Diagram The LCD MONIT OR will contain a main board, a power board, and key bo ard which house the flat p anel control logic, brightness control logic and DDC. The power board will prov ide AC to DC Inverter voltage to drive the backlight of p anel and the main board chips each voltage. Inverter Board (include adapter) Flat Panel an[...]

  • Page 15

    15 Main Board Diagram Scalar IC NT68625HMFG-128 JS (Include MCU ,ADC, OSD) (U401) D-Sub Connector (CN403) H sync V sync RGB LCD Interface (CN101) Key Board Control (CN701) Crystal (X401) 12MHz[...]

  • Page 16

    16 Softwar e Flow Chart N Y 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18[...]

  • Page 17

    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 AUT O and SELECT key s pressed? 8) Enter factory mode. 9) Save the power key status into EEPROM. T urn on the LED and set it to green color[...]

  • Page 18

    18 Main Board Layout Symbol Description Symbol Description U402 AZ431AN-A-E1 CN701 WAFER 6PIN U401 NT68625HM FG-128 JS CN702 WAFER 9P RIGHT ANELE PITCH U702 AP1117E33LA CN403 D-SUB 15PIN CN101 CONNECTOR X401 NXS12.000AC30F-BT - 2[...]

  • Page 19

    19 Inst allation To install the monitor on your host system, please follow the ste ps 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. 2 Connect the power cord Connect the power cord to the monitor, then to a properly grounded AC outlet. 3 Turn [...]

  • Page 20

    20 Att aching/Removing the Base Attaching: Align the release button on the bottom of the monitor wi th the co rresponding slots on the botto m of the base. Removing: Press the release button as indicated, then pull in the direction of the arrow to remove the base.[...]

  • Page 21

    21 O p e r a t i n g I n s t r u c t i o n s Press the power button to turn the monitor on o r of f. The other control buttons are locate d at front panel of the monitor . By changing these settings, the picture can be adju sted to your personal preference s. • The powe r cord should be connected. • Conne ct the video cable from the monitor to [...]

  • Page 22

    22 eColor Management (OSD)[...]

  • Page 23

    23 How to Adjust a Setting[...]

  • Page 24

    24 Adjusting the picture[...]

  • Page 25

    25[...]

  • Page 26

    26 OSD Message a. Outline b. The Description For OSD Message Item Description Auto Config Please W ait When Analog signal input, if User Press Hot- Key “Auto”, will show this messa ge, and the monitor do the auto config function. Input Not Supported When the Hsync Frequency , Vsync Frequency or Resolution is out of the monitor support range, wi[...]

  • Page 27

    27 Logo When the monitor is power on, the LOG O will be showed in the center , and disappear slowly . How T o Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feat ure This monitor is equipped with VESA DDC2B capabilities accordi ng to the VESA DDC ST ANDARD. It allows the monitor to inform the host system of its identity and, depending o [...]

  • Page 28

    28 Machine Disassembly This chapter contains step-by-step pro cedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the cover hinge as the following indicator . (Fig 1) Fig 1 2. Remove the screws as following indicate to release base st and. (Fig 2) Fig 2 Chapter 3[...]

  • Page 29

    29 3. Remove the back cover and bezel. (Fig 3) Fig 3 4. Remove the lamp connectors a nd the screw . (Fig 4-5) Fig 4 Fig 5[...]

  • Page 30

    30 5. Remove the screws to remove the panel. Put attention to the L VDS cable.(Fig 6-7) Fig 6 Fig 7 6. Remove the screws to remove t he main board and power board.( Fig 8) Fig 8[...]

  • Page 31

    31 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the V203W: 1. No Power Cha p ter 4 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 Check if X401 oscillate waveforms are normal Measure U702 Pin2=3.3V , OK OK[...]

  • Page 32

    32 2. No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Replace X401 Measure U702 Pin2=3.3V , Check Corre spondent component Replace U401 X401 oscillate waveform is normal Replace U702 OK OK OK OK OK NG NG NG NG Check reset c ircuit of U401 is normal Check HS/VS from CN403 is normal Rep[...]

  • Page 33

    33 3. Panel Power Circuit White screen Measure Q705 base is high level? X401 oscillate waveform is normal Check CN101 is solder and Q704,Q705 is OK? Check Correspondent component. Replace P ANEL Check Correspondent component. Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset c ircuit of U401 is normal[...]

  • Page 34

    34 4. Key Board OSD is unst able or not working Is Key Pad Board connecting normally? Connect Key Board Is Button Switch normally? Replace Button Switch Y NG NG Is Key Pad Board normally? Replace Key Board Y NG Y Check Main Board[...]

  • Page 35

    35 5. Power Board No power Check to CN902 Pin10,1 1 =14V and Pin6,7 = 5 V OK Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, L901, IC9 01 Check the voltage of C9 05(+) Check bridge retified circuit Check sta rt voltage for the Pin2 of IC901 Chan g e IC901 OK Check the auxiliary volt age is smaller than 20V OK NG No p[...]

  • Page 36

    36 W/LED No Backlight Check the 14V volt age input Check the adapter Check ON/OFF sign al Check Interface board Check IC801 pin12=1 2V? Change Q805.Q808 or Q8 10 Check the pin9&10 of IC801 have PWM wave Change Q801/Q804/Q81 1/Q812 Re p lace IC801 Check the resonant wav e of pin3 & pin7 for T801 Check the output of T801,T802 Check Q8 02/Q803[...]

  • Page 37

    37 Connector Information The following figure shows the connector loc ations on the monitor: Cha p ter 5[...]

  • Page 38

    38 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) listing in global configurations of V203W.Refer to this chapter whenever ordering for parts to repair o r for RMA (Return Merchandise Authori zation). NOTE: Please note WHEN ORDERING FRU PARTS, that y ou sho uld check the most up-to-date informatio n avail[...]

  • Page 39

    39 Part List Above picture show the description of the followin g component. Item Picture Description 1 Base 2 Main Frame 3 Panel[...]

  • Page 40

    40 4 Power Board 5 Main Board[...]

  • Page 41

    41 S c h e m a t i c D i a g r a m Main Board 2K2 1/16W 5% R4 3 8 HS G1 VGA_VD D 1K 1/ 16W 5% R4 2 5 VSI 4 220pF C4 2 3 GI 1 4 22pF C4 2 5 B1 D4 0 2 BAV99 3 1 2 75R 1/ 16W 5% R4 27 4K7 1/ 16 W 5% R4 35 R1 VS D-SUB1 B1 HS 1K 1/ 16W 5% R4 3 0 SOGI 4 GI 1- 4 R4 31 470R 1/ 16W 5% 100R 1/ 16W 5% R4 24 0. 047uF C4 21 FB 40 5 30 OHM 1 2 VS R4 34 100R 1/ 1[...]

  • Page 42

    42 T2 M 4 LC D -VD D T5 M Q705 PM BS390 4 T1 P 4 T7 P 4 T C LK2M 4 PAN EL_ON 4 T4 M T1 M TC L K 1 P 4 T7 M 4 T0 P 4 LC D -VD D T6 M 4 T0 P T C LK2M R7 1 3 10K 1/ 16W 5% T4 P 4 T5 P T4 M 4 T5 P 4 T6 M T3 M T C LK1M T0 M 4 T2 M C N 101 CO NN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 LC D -VD D T4 P C7 1 6 1uF 10[...]

  • Page 43

    43 VGA_SDA 2 HSO NC D401 B AV70 3 1 2 Detect 5V -->4V Reset LED_G 5 R41 3 NC C426 T4M 3 R44 6 1K 1/ 16W 5% VSI 2 T3M 3 REFCLK I C42 6 NC 7 2 +1.8 V R44 4 0R05 1/16W C40 8 0.1 uF 16 V T7P 3 TX R41 4 NC R40 4 10K 1/10W 1% T0M 3 R417 10K 1/16W 5% C40 7 NC R404 chang e type 0402 5%-- >0603 1% 10/12/07 R40 6 NC C411 0.1uF 16V T4P 3 R40 5 NC 26 0R [...]

  • Page 44

    44 +3. 3V CN7 02 CO NN 1 2 3 4 5 6 7 8 9 C7 09 0. 1uF 16V +3. 3 V AD C _VAA KEY 0 4 U 702 AP1117E33LA 1 2 3 4 VSS VOU T VI N 4 + C7 0 6 NC +5V C7 10 0. 1uF 16V +5V LED_G 4 R7 0 5 10K 1/ 16W 5% Q702 PM BS3906 +5V DV DD +3. 3V C 705 0. 1uF 16V D7 01 SM 340A KEY 1 4 C7 04 0. 1uF 16V R 703 1K 1/ 16W 5% R 707 100R 1/ 16W 5% + C 703 100uF / 25V VOLU M E [...]

  • Page 45

    45 Power board[...]

  • Page 46

    46[...]

  • Page 47

    47 Key board L ED_ RED# C 006 NC EC OLOR ECOLOR VOL+ R 001 2K OH M 1/ 16W ECOLOR C 008 NC (GND) LBAD C 1 LED C0 05 NC C N 001 CO NN 1 2 3 4 5 6 C0 07 NC AUTO L ED_ RED# POW ER _Key C 002 NC LED 001 LED 3 4 1 2 MENU 0 V C 001 NC POW ER _Key LBADC2 VOL+ LBAD C 2 C 003 NC MENU CONNECTOR (GND) VOL- C0 04 NC AUTO R0 03 1K 1/ 16W 5% L ED_ BL UE# L ED_ BL[...]