Acer AT1921 Manuale utente

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Acer AT1921/22

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%RecycledPaper

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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 the 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

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

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.

zSlots 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.

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. 3.5A.

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

zFor 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

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 in 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.

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Table of contents

Chapter 1 LCD TV FEATURE………………………………………………………………………....9

Chapter 2 OPERATING INSTRUTION ………………………………………………………..20

Chapter 3 MACHINE ASSEMBLY………………………………………………………………...25

Chapter 4 TROBLE SHOOTING…………………………………………………………………...39

Chapter 5 CONNECTOR INFORMATION…………………………………………………...42

Chapter 6 FRU LIST……………………………………………………………………………………...43

Chapter 7 SCHEMATIC DIAGRAM ……………………………………………………………..45

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Chapter 1

LCD TV Feature

Destination Europe

Color System CCIR B/G, D/K, I and L/L’

Sound System Sound 1 and Sound 2

Stereo System NICAM and FM Stereo ( A2 )

Channel System Full frequency range from channel E2

( 48.25 MHz ) to channel E69 ( 855.25

MHz)

Sub-Title Teletext 100 pages

TV System RF-AFT (+ / - 1.5MHz)

Maximum Resolution 1440*900

Panel Supplier AUO: M190PW01_V0

Lamp Quantity CCFL*4

Display Area 19" Wide Diagonal

Display Color 16.7 M colors (RGB 6 bits+HiFRC)

Contrast Ratio 800:1 (Typical)600:1(Min)

Brightness 300 cd / m*2 (Typical)

Response Time 5 ms(Typ)

LCD Panel View Angle 80°(L)/80°(R), 80°(U)/80°(D)

HDMI For Audio & Video

RCA Jack *3 For Audio & Video

Din Jack For S-Video

SCART*1 21 Pin for Video ,S-Video & RGB

PH Jack For TV Input ( PAL system)

Earphone Jack For Audio Output

SPDIF For Audio output (I2S)

3.5mm Stereo Jack For PC Stereo Audio Input , Black color

I / O Functions D-Sub-15 For VGA

Support PAL / NTSC / SECAM video

format

Support 480 i , 480 p,720P,1080i format

Build in motion adaptive 3D digital Comb

Filter

Video Functions

Build in Teletext Functions

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TV System PAL and SECAM system Receivable

Tuner FQ1216-MK5

Horizontal input frequency range : 30~71

KHz

Vertical input frequency range : 50~85 Hz

VGA Maximum resolution : 1440*900

Out of Range

When input signal is out of range or

down scaling support ,the OSD will show

"Out of Range "within 5 seconds and LED

is green

Input Signal No Signal

When there is missing signal from

selected input ,the OSD will show "No

Signal "within 8 seconds and LED is green

Standard x=300 , y=310, Y>250cd / m*2(center)

Warm x=317 , y=327, Y>250cd / m*2(center)

Color

Temperature Cold x=285 , y=293, Y>220cd / m*2(center)

Key count 43 Keys

Effective Distance More than 5 m +45~-45degreeRemote

Controller Supplier Panasonic

Local Control

Key 7 Keys

Power, Left, Right, Up, Down, Menu,

Select

Display Area: 19W inches diagonal

H-Phase: A-B Less than 1.5mm

V-Center: C-D Less than 1.5mm

Tilt: E-F Less than 1mm

Display Area &

Tilt

Speaker

Internal speaker. 5W*2 stereo, volume

adjustable.

Treble, Bass ( + 6db)

Audio

Frequency Response 100~15KHz with +/-3 db variation

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