Acer AL1923 Manuale utente
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AcerAL1923 (Dual)
Service Guide
Service guide files and updates are available on the CSD web: for more
information,
Please refer to http://csd.acer.com.tw/
100% Recycled Paper
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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 no
representations or warranties, either expresses 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, of its dealer)
assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages
resulting from any defect in the software.
Acer is a registered trademark of Acer Corporation.
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.
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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.
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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 BASICCONFIGURATION
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 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.
2. Please not WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on 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.
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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. 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.
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 an ENERGY STAR®
Partner our company has determined that this product meets the ENERGY STAR®
guidelines for energy efficiency.
WARNING:
To prevent fire or chock hazard, do not expose the monitor to rain or moisture. Dangerously high
voltages are present inside the monitor. Do not open the cabinet. Refer servicing to qualified
personnel only.
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PRECAUTIONS
lDo not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub,
Swimming pool or in a wet basement.
lDo 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 instructions.
lSlots and openings in the back and bottom of the cabinet area 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.
lThe 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.
lThe 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.
lUnplug 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.
lDo not overload power strips and extension cords. Overloading can result in fire or electric shock.
lNever 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.
lDo 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.
lTo ensure satisfactory operation, use the monitor only with UL listed computers which have
appropriate configured receptacles marked between 100-240V AC, Min. 3.5A.
lThe wall socket shall be installed near the equipment and shall be easily accessible.
lFor use only with the attached power adapter (output 12V DC) which have UL,CSA listed license
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SPECIAL NOTES ON LCD MONITORS
The following symptoms are normal with LCD monitor and do not indicate a problem.
NOTES
lDue 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.
lYou may find slightly uneven brightness in the screen depending on the desktop pattern you use.
lThe 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.
lDue 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.
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Table of contents
Chapter 1 MONITOR FEATURE ………………………………………………………….9
Chapter 2 OPERATING INSTRUTION …………………………………………………….19
Chapter 3 MACHINE ASSEMBLY ………………………………………………………. .24
Chapter 4 TROUBLE SHOOTING ………………………………………………………..36
Chapter 5 CONNECTOR INFORMATION ………………………………………………39
Chapter 6 FRU LIST ………………………………………………………………………...41
Chapter 7 SCHEMATIC DIAGRAM ………………………………………………………...42
Chapter 8 POWER BOARD INFORMATION……………………………………………….48
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Chapter 1
Monitor Feature
Driving system TFT Color LCD
Size 19"
Pixel pitch 0.294 mm
Viewable angle AU panel 8ms :70/60/70/70 degree(typ)
LG panel-8ms(TLB1/TLB4):70/70/70/70 degree(typ)
Samsung-8ms:75/60/75/75 degree(typ)
CPT panel-8ms:65/65/70/70 degree(typ)
HSDpanel-8ms:TBD
Brightness LG panel-8ms(TLB1/TLB4) :300 cd/m2(typ.)
AUO 8ms:270cd/m2(typ.)
Samsung 8ms: 300 cd/m2(typ.)
CPT 8ms:250 cd/m2(typ.)
HSD 12ms:250 cd/m2(typ.)
Contrast Ratio 700:1 (AU M190EN04 V5 ,8ms)
550:1(LG LM190E03 TLB1/TLB4, 8ms)
700:1(Samsung TLM190EX-L01, 8ms)
700:1(CPT CLAA10EA05, 8ms)
600:1(HSD HSD190ME13-A02,8ms)
LCD Panel
Response time
AU (V5) 8ms,LG (TLB1/TLB4) 8ms,Samsung 8 ms, CPT
8ms,HSD 8 ms
Video R,G,B Analog,
Input Separate SyncH/V TTL
H-Frequency 31-81KHZ
V-Frequency 56-75HZ
Display Color 16.2 million Colors
Maximum Dot Clock ® 135MHz
Max Resolution 1280x1024@75HZ
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Plug & Play VESA DDC2B
ON Mode <40W
EPA ENERGY STAY OFF Mode <2W
Audio output Rated Power 2.0W rms(Per channel)
Input Connector D-Sub, DVI-D
Input Video Signal Analog : 0.7Vp-p,75OHM
Horizontal : 337.9mm
Screen Size (Active) Vertical : 270.3mm
Power Source 90~264 Vac, 47~63HZ
Environmental
Considerations
Operating Temp : 5 to 40 degree ;
Storage Temp : -20 to 60 degree ;
Operating Humidity : 10% to 85%
Weight (N.W.) TBD
Dimension TBD
Switch * Power Switch
* MENU / EXIT
* / Volume
* / Volume
* AUTO / ENTER
External Controls
* Contrast/brightness
* Focus
* Clock
* H.Position
* W.Position
* Language
* OSD Color temperature
* OSD Position & Timeout
* Auto Config
* Input
* Information
* Reset
* Exit
Regulatory Compliance cUL, FCC, TUV, CE, ISO13406-2
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