Acer X233HZ0 SERVICE GUIDE

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Acer X233HZ&X243HQ

Service Guide

Service Guide Version and Revision

Version Release Date Revision History Customer model TPV model

A00 Dec.-18-2008 Initial Release X233HZ&X243HQ TDRMNDD8Y1ABPN

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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 no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose. 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.

Intel is a registered trademark of Intel Corporation. Pentium and Pentium II/III are trademarks of Intel Corporation. Other brand and product names are trademarks and/or registered trademarks of their respective holders.

Trademarks

Acer is a registered trademark of Acer Incorporated. All other trademarks are property of their respective owners.

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 Remind you to do specific actions relevant to the accomplishment of procedures.

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Preface

1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided

2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on

Before using this information and the product it supports, please read the following general information.

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 FEATURES will NOT be covered in this generic service guide. In such cases, please contact your regional offices or the responsible personnel/channel to provide you with further technical details.

your regional web or channel. If, for whatever reason, a part number change is made, it will not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a 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. 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. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4. Consult the dealer or an experienced radio/TV technician for help.

Notice:

1. The changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission limits.

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3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized modification to this

equipment. It is the responsibility of the user to correct such interference. As ENERGY STAR guidelines for energy efficiency.

Warning:

To prevent fire or shock hazard, do not expose the monitor to rain or moisture. Dangerous high voltages are present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.



Partner our company has determined that this product meets the ENERGY STAR

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 kit instructions.

 Slots and openings in the back and bottom of the cabinet are provided for ventilation. To ensure reliable

operation of the monitor and to protect it from overheating, be sure these openings are not blocked or covered. Do not place the monitor on a bed, sofa, rug, or similar surface. Do not place the monitor near or over a radiator or heat register. Do not place the monitor in a bookcase or cabinet unless proper ventilation is provided.

 The monitor should be operated only from the type of power source indicated on the label. If you are not sure of

the type of power supplied to your home, consult your dealer or local power company.

 The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug will fit

only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug, have an electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the safety purpose of the grounded plug.

 Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect the

monitor from damage due to power surges.

 Do not overload power strips and extension cords. Overloading can result in fire or electric shock.  Never push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire or electric

shock. Never spill liquids on the monitor.

 Do not attempt to service the monitor yourself; opening or removing covers can expose you to dangerous

voltages and other hazards. Please refer all servicing to qualified service personnel

 To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate

configured receptacles marked between 100 - 240V AC, Min. 5A.

 The wall socket shall be installed near the equipment and shall be easily accessible.

Special Notes on LCD Monitors

The following symptoms are normal with LCD monitor and do not indicate a problem.

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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 on 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 such as a

missing pixel or a pixel lit all of the time.

 Due to the nature of the LCD screen, an afterimage of the previous screen may remain after switching the image,

when the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image or turning off the Power Switch for hours.

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 Instructions ……………………………………… 21

External Controls ……………………………………… 21 Front Panel Controls ……………………………………… 21 eColor Management (OSD) ……………………………………… 22 How to Adjust a Setting ……………………………………… 23 How To Optimize The DOS-Mode ……………………………………… 27 Enter into the factory mode ……………………………………… 27

Chapter 3 Machine Disassembly ……………………………………… 28

Chapter 4 Troubleshooting ……………………………………… 31

Chapter 5 Connector Information ……………………………………… 37

Chapter 6 FRU (Field Replacement Unit) List ……………………………………… 38

Exploded Diagram ……………………………………… 38

Chapter 7 Schematic Diagram ……………………………………… 43

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Monitor Features

Introduction

Scope

This short specification describes the electrical, optical and functional performance requirements for a 63.2cm (23.6”) 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 design, allowing more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more.

Chart of X233HZ&X243HQ

Chapter 1

Panel M236H1-L01 NB CMO Signal Interface D-Sub 15pin;DVI 24pin Sync Type Separate / Compatible Color Temp User Adjust Support DDC DDC2B Speaker Yes Headphone Jack No Microphone Jack No USB Hub support Tilt / Swivel Yes /No

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Electrical Requirements of X233HZ&X243HQ

Standard Test Conditions

All tests shall be performed under the following conditions, unless otherwise specified.

Warm up time ＞ 30 min. AC supply voltage Ambient temperature Humidity Display mode e-color mode Set to “User” mode

Contrast control

Color temperature 6500°K Brightness control The value under user mode Analog Input signal 700 mVss Picture position and size Factory preset value, Viewing angle 90 ° H and V Viewing distance 40 cm for LCD performance, 20 cm for LCD failures Ambient illumination Dark room < 1 cd/m2

230V± 5％, 50± 3 Hz 20°C ± 5°C 65% ± 20% 1920 x 1080, 60 Hz, Pixel Clock：148.5MHZ,all white

Set to The value under user mode, which allows that the brightest two of 32 linear distributed gray-scales (0～ 700mv) can be distinguished.

Measurement systems

The units of measure stated in this document are listed below: 1 gamma = 1 nano tesla 1 tesla = 10,000 gauss cm = in x 2.54 Lb = kg x 2.2 Degrees F = [°C x 1.8] + 32 Degrees C = [°F - 32]/1.8 u' = 4x/(-2x + 12y + 3) v' = 9y/(-2x + 12y + 3) x = (27u'/4)/[(9u'/2) - 12v' + 9] y = (3v')/[(9u'/2) - 12v' + 9] nits = cd/(m2) = Ft-L x 3.426 lux = foot-candle x 10.76

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Set to The value under user mode, which allows that the brightest two of 32 linear

LCD Monitor General Specification

Model name X233HZ&X243HQ

Driving system TFT Color LCD

Active Display Area 525.22 (H) x 297.22(V)

Pixel pitch 0.2715(H) x 0.2715(V)

LCD Panel

Contrast Ratio 1000 : 1 (typ)

Response time 5ms(Typ.). 8ms(max)

Luminance of White 300 cd/m2(Typ.) Separate Sync. H/V TTL

Input

Viewing angle (H)90 (V) 90(Type)

Display Colors 16.7M

Display mode 1920 x 1080 @60Hz

EPA ENERGY STAR®

Contrast control

Power Source

Environmental Considerations

H-Frequency 30kHz – 83kHz

V-Frequency 56-75Hz

ON Mode < 65W OFF Mode < 1W

distributed gray-scales (0～ 700mv) can be distinguished.

100 V ~ 240 V，50 ± 3Hz, 60 ± 3Hz Operating Temp: 0° to 40°C

Storage Temp: -20° to 60°C Operating Humidity: 15% to 90% Storage Humidity: 15% to 90% Operating Altitude: 12,000 feet (3,658m)

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Storage Altitude: 40,000 feet (12,192m)

Peak surge current < 55A peak at 240 VAC and cold starting

Power line surge No advance effects (no loss of information or defect)

LCD Panel Specification of X233HZ&X243HQ

M236H1-L01 is a 23.6” TFT Liquid Crystal Display module with 4 CCFL Backlight unit and 30 pins 2ch-LVDS interface. This module supports 1920 x 1080 Full HD mode and can display up to 16.7M colors. The inverter module for Backlight is not built in.

General Specifications

Block Diagram

TFT LCD Module

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Back light Unit

Electrical Characteristics

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Optical Specifications

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Factory Preset Timing of X233HZ&X243HQ

VESA MODES

Horizontal Vertical

Mode Resolution Total

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

XGA

VESA

SXGA 1280x1024@60Hz 1688 x 1066

WXGA

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 60.004 N 65.000 1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000 1152x864@70Hz 1600 x 900 67.500 P 75.000 P 108.000 1280x960@60Hz 1800 x 1000 1280x720@60Hz 1650 x 750 44.955 P 59.940 P 74.176

1280x800@60Hz 1680 x 831 49.702 P 59.810 N 83.500 1360x768@60Hz 1792 x 795 47.712 P 60.015 P 85.500

Nominal Frequency +/- 0.5kHz

60.000 P 60.000 P 108.000

63.981 P 60.020 P 108.000

Sync

Polarity

Nominal

Freq.

+/- 1 Hz

Sync

Polarity

Nominal

Pixel Clock (MHz)

WXGA+ 1440x900@60Hz 1904 x 931 55.935 N 59.887 P 106.5

WSXGA+

UXGA

DOS 720x400@70Hz 900 x 449 31.469 N 70.087 P 28.322

VGA 640x480@67Hz 864x525 35.000 N 66.667 N 30.240

648x500@57.67 Hz 808 x 541 31.199 N 57.67 P 25.209 1024x600@60Hz 1312 x 622 37.320 N 60.000 N 48.964

1680x1050@60Hz 2240 x1089 65.290 N 59.954 P 146.250 1600x1200@60Hz 2160 x 1250 1920x1080@60Hz 2576 x 1120 1920x1080@60Hz 2200 x 1125 1920x1080@60Hz 2080 x 1111 66.587 P 69.934 N 138.500

IBM MODES

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MAC MODES

ACER SPECIAL MODE

75.000 P 60.000 P 162.000

67.158 N 59.963 P 173.000

67.500 N 60.000 N 148.500

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.

AC-IN

100V-240V

Power Board

CCFL Drive.

Key board

Flat Panel and CCFL backlight

DVI Signal

USB board

Main Board

D-SUB Signal

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Main Board Diagram

(CN

301

)

(CN102

)

Flash Memory

SST25VF010A

(U402)

Crystal 12MHz

(X401)

Scalar IC NT68667UFG/C

(Include MCU, ADC, OSD)

D-Data D-Clock

DVI

Connector

(U401)

Panel Interface

H sync V sync

RGB

D-Sub

Connector

(CN101)

Key control Interface

(CN402)

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Software Flow Chart

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