Acer V193
Service Guide
1
Service Guide Version and Revision
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Release Date |
Revision History |
TPV model |
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A00 |
Mar.-10-2008 |
Initial Release |
T97HNCD8K3ABNN |
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2
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 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
Note
Warning
Caution
Important
Denotes actual messages that appear on screen.
Gives bits and pieces of additional information related to the current topic.
Alerts you to any damage that might result from doing or not doing specific actions. Gives precautionary measures to avoid possible hardware or software problems. Remind you to do specific actions relevant to the accomplishment of procedures.
3
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 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 note 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.
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 ENERGY STAR® Partner our company has determined that this product meets the 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.
4
Precautions
zDo not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement.
zDo 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.
zSlots 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.
zThe 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.
zThe 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.
zUnplug 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.
zDo not overload power strips and extension cords. Overloading can result in fire or electric shock.
zNever 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.
zDo 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
zTo ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate configured receptacles marked between 100 - 240V AC, Min. 5A.
zThe 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.
Notes
zDue 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.
zYou may find slightly uneven brightness on the screen depending on the desktop pattern you use.
zThe 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.
zDue 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.
5
Table Of Contents
Chapter 1 Monitor Features |
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7 |
Introduction |
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Electrical Requirements |
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LCD Monitor General Specification |
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LCD Panel Specification |
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Support Timing |
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Monitor Block Diagram |
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Main Board Diagram |
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Software Flow chart |
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Main Board Layout |
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Installation |
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Attaching/Removing the base |
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Chapter 2 |
Operating Instructions |
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External Controls |
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Front Panel Controls |
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eColor Management (OSD) |
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How to Adjust a Setting |
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LOGO |
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Chapter 3 |
Machine Disassembly |
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Chapter 4 |
Troubleshooting |
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30 |
Chapter 5 |
Connector Information |
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Chapter 6 FRU (Field Replacement Unit) List |
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37 |
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Exploded Diagram |
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37 |
Chapter 7 |
Schematic Diagram |
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6
Monitor Features |
Chapter 1 |
Introduction
Scope
This specification defines the requirements for the 19” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector, also supports VESA DPMS power management and plug & play function.
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.
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Chart of V193R |
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Panel |
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HSD190MEN3-A00 |
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Signal Interface |
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D-Sub 15-pin |
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Sync Type |
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Separate / Compatible |
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Color Temp User Adjust |
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Support |
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DDC |
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DDC2B |
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Speaker |
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No |
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Headphone Jack |
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No |
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Microphone Jack |
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No |
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USB Hub |
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Not support |
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Tilt / Swivel |
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Yes / No |
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7
Electrical Requirements
Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light |
Dark room (< 1 cd/m2) |
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Viewing distance |
40 cm for LCD performance, 20 cm for LCD failures |
Warm up time |
30 minutes |
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Analog Input signal |
700 mVss |
Control temperature |
6500° K |
Brightness control |
The value under user mode |
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Set to The value under user mode, which allows that the brightest |
User contrast control |
two of 32 linear distributed gray-scales (0 700mv) can be |
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distinguished. |
Picture position and size |
Factory preset value |
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Viewing angle |
90 ° H and V |
AC Supply voltage |
230V± 5 , 50±3Hz |
Ambient temperature |
20+5 |
Display mode |
1280x1024, 75Hz, all white |
e-color mode |
Set to “User” mode |
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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
8
LCD Monitor General Specification
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Driving system |
TFT Color LCD |
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Active Display Area |
376.32 (H) x301.056 (V) |
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LCD Panel |
Pixel pitch |
0.294(H) x 0.294(V) |
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Contrast Ratio |
1000 : 1 |
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Response time |
5ms |
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Luminance of White |
300(Typ.) cd/ |
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Separate Sync. |
H/V TTL |
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Input |
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H-Frequency |
30kHz – 80kHz |
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V-Frequency |
55-75Hz |
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Viewing angle |
(H)170 (V) 160(Type) |
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Display Colors |
16.7M |
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Display mode |
1280 x 1024 @75Hz |
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EPA ENERGY STAR® |
ON Mode |
< 36W |
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OFF Mode |
< 1W |
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Contrast control |
Set to The value under user mode, which allows that the brightest two of 32 linear |
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distributed gray-scales (0 700mv) can be distinguished. |
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Power Source |
90 V ~ 240 V 50~60/± 3Hz |
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Operating Temp: 0° to 40°C |
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Environmental |
Storage Temp: -20° to 60°C |
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Considerations |
Operating Humidity: 15% to 90% |
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Storage Humidity: 15% to 90% |
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Peak surge current |
< 55A peak at 240 VAC and cold starting |
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No advance effects (no loss of information or defect) with a maximum of 1 half-wave |
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Power line surge |
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missing per second |
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9
LCD Panel Specification
General Specifications
Mechanical Information
Electrical Characteristics
10
Optical Specifications
11
Support Timing
12
Monitor Block Diagram
The LCD MONITOR will contain a main board, a power board, and 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.
CCFL Drive. |
Flat Panel and |
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CCFL backlight |
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Inverter Board |
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Main Board |
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(include adapter) |
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Key board |
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Input : |
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D-SUB Signal |
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AC-IN 90V-264V
13
Main Board Diagram
Crystal |
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LCD Interface |
(X401) |
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(CN101) |
12MHz |
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Scalar IC NT68625MFG-128
(Include MCU ,ADC, OSD)
(U401)
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H sync |
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V sync |
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RGB |
Key Board |
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D-Sub |
Control |
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Connector |
(CN701) |
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(CN403) |
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14
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