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Acer V193
Service Guide
Service guide files and updates are available on the
CSD web: for more information,
Please refer to http://csd.acer.com.tw/
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Copyright Copyright © 2008 by Acer Incorporated. All rights reserved. No part of this publication 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, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated. Disclaimer The information in this guide is subject to change without notice. Acer Incorporated makes
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Conventions The following conventions are used in this manual: Screen messages Denotes actual messages that appear on screen Note Gives bits and pieces of additional information related to the current topic. Warning Alerts you to any damage that might result from doing or not doing specific actions. Caution Gives precautionary measures to avoid possible hardware or software problems. Important Reminds you to do specific actions relevant to the accomplishment of procedures. Preface
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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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Howe
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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. Use only a trolley or stand recommended by the manufacture or sold with the monitor. If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacture and follow the kit
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SPECIAL NOTES ON LCD MONITORS The following symptoms are normal with LCD monitor and do not indicate a problem. NOTES Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears. You may find slightly uneven brightness in the screen depending on the desktop pattern you use. The LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.01% or less
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Table of contents Chapter 1 Monitor Feature …………………………………………………………………...………..8 INTRODUCTION...............................................................................................................................................................8 ELECTRICAL REQUIREMEENTS....................................................................................................................................9 MONITOR BLOCK DIAGRAM ..............................................................
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Chapter 1 Monitor Feature INTRODUCTION Scope This specification defines the requirements for the 19” MICRO-PROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGA connector and eliminates the requirement of optional special display card. It also supports VESA DPMS power management and plug & play function. There is a build-in stereo audio amplifier with volume control t
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ELECTRICAL REQUIREMENTS Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light : 225 lux Viewing distance : 50 cm in front of LCD panel Warrn up time All specifications : 30 minutes Fully functional : 5 seconds Measuring Equipment : Chroma 2250 signal generator or equivalent, directly Connected to the monitor under test. Minolta CA100 photometer, or equivalent Control settings User brightness control : Ma
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Display Dot: 1280 x (RGB) × 1024 Pixel Clock: 25.2 – 135.0MHz Contrast ratio: θ = 0˚ LG: 500:1 (typical) Samsung: 700:1 (typical) AU: 550:1 (typical) Brightness: LG: 250 (typical) Samsung: 300 (typical) AU: 270 (typical) Response time (Tr/Tf): LG Ta=25°C, 2/10ms (typical) Samsung Ta=25°C, 1.7/6.3ms (typical) AU Ta=25°C, 5.6/2.4ms (typical) Display color: LG 16.2M color with F
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LCD Panel Specification LCD Panel Model (LM190E08-TLL1) General specification Optical specifications - 11 -
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Note 1) Definition of Viewing Angle: Viewing angle range (10 ≤CR) Note 2) Definition of Contrast Ratio (CR): Ratio of gray max(Gmax),gray min(Gmin) at the center point of panel. Luminance with all pixels white (Gmax) CR= ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Luminance with all pixels black (Gmin) Note 3) Definition of Response time: Sum of T , T R F Note 4) After stabilizing and leaving the panel alone at a given temperature for 30 min, the measurement s
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Environment condition :Ta=25 ±2 °C Optical characteristics measurement setup Notes 5) Definition of Luminance of White : measure the luminance of white at center point. Notes 6)Definition of 9 points brightness uniformity (Measuring points: Refer to the Note 5) AU Bmin B = ⎯⎯⎯⎯⎯⎯⎯ X 100% UNI - 13 -
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Bmax Samsumg Bmax-Bmin B = ⎯⎯⎯⎯⎯⎯⎯ X 100% UNI Bmax Bmax: Maximum brightness Bmin: Minimum brightness Notes 7) Definition of Flicker level Flicker Voltage pp F = ⎯⎯⎯⎯⎯⎯⎯⎯⎯ x 100 % LMD Voltage dc ♦ One maximum value of three estimated values. ♦ For this test ,an LMD(Light Measurement Device)is needed with adequate response time to track any visible rate flicker component and with a voltage leve
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The calculation for shadowing is made from the 2 luminance measurements Gbkg and Lsh, as follows: Lmax -Lmin C = ⎯⎯⎯⎯⎯⎯ x100 % T Lmin Where Lmax is the larger value of Gbkg or Lsh , and Lmin is the smaller of the two. ♦ To determine background and foreground levels (colors),first set the background to any gray scale or color level suitable for shadowing determination.(Note that it may take several iterations of adjusting background level and box level
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Panel Relative Humidity JP777-E02 Input Signals Video input • Type Analog R, G, B. DVI (option) • Input Impedance 75 ohm +/- 2 % • Polarity Positive • Amplitude 0 - 0.7 +/- 0.05 Vp • Display Color same as LCD panel Sync input • Signal separate horizontal and vertical sync, or composite sync which are TTL compatible • Polarity positive and negative. Interface frequency The following frequency range is generalized by supported timing. If the entered mode
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Supported Timing FH(KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL TIMING FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ.(MHZ) (DOT/LINE)(DOT/LINE)(DOT/LINE) 640x350 31.469 + 800 640 96 16 48 25.175 VGA-350 70.087 – 449 350 2 37 60 640x400 24.83 – 848 640 64 64 80 21.05 NEC PC9801 56.42 – 440 400 8 7 25 640x400 31.469 – 800 640 96 16 48 25.175 VGA-GRAPH 70.087 + 449 400 2 12 35 640x400 31.5 – 800 640 64 16 80 25.197 NEC PC9821 70.15 – 449 400 2 1
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Support Modes There will be 28 total support modes to accommodate the above mode and other video modes within the frequency range of the monitor. 85Hz refresh rate Support Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display “Out of Range” warning menu at this mode. Video input Connector Analog Video input Connector: 15pins mini D-Sub Table 2.4.5. Pin assignment for D-sub connector Separate Sync PIN NO. 1 RED VIDEO 2 GREEN VIDEO 3
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Color of plastic parts: Blue (PC99) 5 1 10 6 15 11 D-sub connector Digital Video Input Connector : DVI – D (T.B.D) Table 2.4.6 Pin assignment for DVI – D Connector: Pin – Assignment of DVI –D connector : 1 TX2- 9 TX1- 17 TX0- 2 TX2+ 10 TX1+ 18 TX0+ 3 Shield (TX2 / TX4) 11 Shield (TX1 / TX3) 19 Shield (TX0 / TX5) 4 NC 12 NC 20 NC 5 NC 13 NC 21 NC 6 DDC-Serial Clock 14 +5V power *) 22 Shield (TXC) 7 DDC-Serial Data 15 Ground (+5V) 23 TXC+ 8 No Co
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MONITOR BLOCK DIAGRAM The LCD monitor will contain an main board, an inverter/ power board, key board and internal adapter which house the flat panel control logic, brightness control logic and DDC. The inverter board will drive the backlight of panel and the DC-DC conversion. The Adapter will provide thr 12V DC-power to inverter/ power board. Power board (include: AC/DC,inverter) - 20 -
