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Acer X233H
Service Guide
1
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Service Guide Version and Revision Version Release Date Revision History Customer model TPV model A00 Dec.-02-2008 Initial Release X233H TDRSNDD8Y2ABPN 2
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Copyright Copyright © 2003 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 n
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Preface Before using this information and the product it supports, please read the following general information. 1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided for Acer's "global" product offering. To better fit local market requirements and enhance product competitiveness, your regional office may have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra memory capability). These LOCALIZED FEAT
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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 manufacturer or sold with the monitor. If you mount the monitor on a wall or shelf, uses a mounting kit approved by the manufacturer and follow the
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Table Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirements ……………………………………… 8 LCD Monitor General Specification ……………………………………… 9 LCD Panel Specification ……………………………………… 10 Factory Preset Timing ……………………………………… 13 Monitor Block Diagram ……………………………………… 14 Main Board Diagram ……………………………………… 15 Software Flow chart ……………………………………… 16 Main Board Layout ……………………………………… 18 Installation ……………………………………… 19 Chapter 2 Operating Inst
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Monitor Features Chapter 1 Introduction Scope This short specification describes the electrical, optical and functional performance requirements for a 58.4cm (23”) TFT LCD color monitor with VGA&DVI compatible interface. Description The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no radiation. This will alleviate the growing health concerns. It is also a space saving d
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Electrical Requirements of X233H Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. 2 Ambient light Dark room (< 1 cd/m ) Viewing distance 40 cm for LCD performance, 20 cm for LCD failures Warm up time ＞30 minutes Analog Input signal 700 mVss Control temperature 6500 ° K User brightness control The value under user mode Set to factory preset value, which allows that the brightest two of User contrast control 32 linear dis
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LCD Monitor General Specification Model name X233H Driving system TFT Color LCD Active Display Area 509.76 (H) × 286.74(V) Pixel pitch 0.2655(H) x 0.2655(W) LCD Panel Contrast Ratio 40000 : 1 Max(ACM) Response time 5ms(Typ.) Luminance of White 300(Typ.) cd/ ㎡ Separate Sync. H/V TTL Input H-Frequency 30kHz – 83kHz V-Frequency 56-75Hz Viewing angle (H)90 (V) 90(Type) Display Colors 16.7M Display mode 1920 x 1080 @60Hz ON Mode < 65W EPA ENERGY STAR® OFF Mode < 1W Set to factor
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LCD Panel Specification of X233H General Specifications Block Diagram TFT LCD Module 10
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Back light Unit Electrical Characteristics 11
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Optical Specifications 12
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Factory Preset Timing of X233H VESA MODES Horizontal Vertical Nominal Sync Nominal Sync Nominal Frequency Polarity Freq. Polarity Pixel Mode Resolution Total +/- 0.5kHz +/- 1 Hz Clock (MHz) 640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175 VGA 640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500 800x600@56Hz 1024 x 625 35.156 N/P 56.250 N/P 36.000 SVGA 800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000 800x600@72Hz 1040 x 666 48.077 P 72.188 P 50.000 1024x768@60Hz 1344x806 48.363 N 60.
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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. Flat Panel and CCFL Drive. CCFL backlight USB board Main Board Power Board AC-IN 100V-240V Key board DVI Signal D-SUB Signal
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Main Board Diagram Panel Interface (CN301) Scalar IC NT68667UFG/C QFP-128L Keypad Interface (CN402) (Include MCU, ADC, OSD) (U401) H sync V sync D-Data RGB D-Clock D-Sub Flash Memory Connector Crystal SST25VF010A-33-4C-SAE DVI (CN101) 12MHz (U402) Connector (X401) (CN102) 15
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Software Flow Chart 1 Y 2 3 N N 4 N 5 Y 6 N 7 8 Y 9 Y N 10 11 Y N N 12 13 Y Y N 14 15 16 Y 17 N 18 19 Y 16
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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. 9) Save the power key status into EEPROM. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light. 12) Check the analog port, are there any signals coming?
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Main Board Layout Symbol Description Symbol Description U401 IC NT68667UFG/C QFP-128L CN402 WAFER U703 IC AP1117D33L-13 TO252-3L DIODES CN701 WAFER 9P RIGHT ANELE PITCH U103 IC AZC099-04S SOT23-6L CN301 CONNECTOR U104 IC AZC099-04S SOT23-6L X401 CRYSTAL 12MHz HC-49US ARG6-120 D-SUB 15PIN VERTICAL CONN WITH U402 SST25VF010A-33-4C-SAE CN101 SCREW U702 IC AZ1117D-1.8-E1 CN102 DVI 24PIN CONN F 18
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Installation 19
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