Acer ET.L1307.150 User Manual

Acer AL1715

Service Guide

Service guide files and updates are available

on the CSD web; for more information,

please refer to http://csd.acer.com.tw

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.

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.

Conventions

The following conventions are used in this manual

SCREEN MESSAGES Denotes actual messages that appear on screen.

NOTE

WARNING

CAUTION

IMPORTANT

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.

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 an ENERGY STAR guidelines for energy efficiency.

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

WARNING:

To prevent fire or shock 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.

PRECAUTIONS

z Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or

in a wet basement.

z 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, use a mounting kit approved by the manufacturer and follow the kit instructions.

z 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.

z 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.

z 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.

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.

z Do not overload power strips and extension cords. Overloading can result in fire or electric shock. z 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.

z 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

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

configured receptacles marked between 100 - 240V AC, Min. 3.5A.

z The wall socket shall be installed near the equipment and shall be easily accessible. z For use only with the attached power adapter (output 12V DC) which have UL, CSA listed license

SPECIAL NOTES ON LCD MONITORS

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

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 ----------------------------------------------------------------- 6

Monitor Features --------------------------------------------------------------------------- 8 Factory Preset Timing Table -----------------------------------------------------------10 Block Diagram ------------------------------------------------------------------------------11 Main board Diagram ----------------------------------------------------------------------12 Software Flowchart ----------------------------------------------------------------------- 13 Main board Layout ------------------------------------------------------------------------ 15 Inverter Board Layout ---------------------------------------------------------------------17 Front Bezel ---------------------------------------------------------------------------- ------18 Rear Bezel -----------------------------------------------------------------------------------19

Chapter 2 Operating Instructions ----------------------------------------------------------- 20

External Controls ----------------------------------------------------------------------------20 Front Panel Controls -----------------------------------------------------------------------20 OSD Menu ------------------------------------------------------------------------------------22 Hot-Key Menu --------------------------------------------------------------------------------25 OSD Message --------------------------------------------------------------------------------26 LOGO -------------------------------------------------------------------------------------------27

Chapter 3 Machine Disassembly --------------------------------------------------------------28

Chapter 4 Troubleshooting --------------------------------------------------------------------- 31

Chapter 5 Connector Information ------------------------------------------------------------ 34

Chapter 6 FRU (Field Replacement Unit) List -------------------------------------------- 35

Exploded Diagram ---------------------------------------------------------------------------35

Chapter 7 Schematic Diagram ---------------------------------------------------------------- 40

Analog Input --------------------------------------------------------------------------------- 40 Input -------------------------------------------------------------------------------------------- 41 Scaler TSU16AK ---------------------------------------------------------------------------- 42 Panel Interface ------------------------------------------------------------------------------- 43 MCU -------------------------------------------------------------------------------------------- 44

Appendix Online Support Information ------------------------------------------------------ 45

Monitor Features

LCD Panel

Input

Chapter 1

SAMSUNG

Driving system TFT Color LCD

Size 43.2cm(17.0")

Pixel pitch 0.264mm(H) x 0.264mm(V)

Brightness

300cd/m

(Typical)

Contrast 500:1(Typical)

Viewable angle

150° (H) 135° (V)

Response time 12ms

R, G, B Analog Interface

Video

Digital (Dual-Input Model)

H-Frequency 30KHz – 80KHz

V-Frequency 55-75Hz

Display Colors 16.2M Colors

Dot Clock 135MHZ

Max. Resolution 1280 x 1024 @75Hz

Plug & Play

EPA ENERGY

STAR

ON Mode ≤45W

OFF Mode ≤3W

Input Connector

Input Video Signal

Maximum Screen Size

Power Source 100~264VAC,47~63HZ

Environmental Considerations

Dimensions 430(W)×445(H)×152(D) mm

VESA DDC1/2B

D-Sub 15pin

DVI-D 24pin (Dual-Input Model)

Analog:0.7Vp-p(standard),75 OHM, Positive

Digital signal (Dual-Input Model)

Horizontal: 337.92mm

Vertical: 270.34mm

Operating Temp: 5° to 50°C Storage Temp: -20° to 65°C

Operating Humidity: 10% to 85%

Weight (N. W.) 4.2kg Unit (net)

External Controls Switch

External Controls Functions

Power Consumption (Maximum)

Regulatory Compliance

• Auto Adjust Key

• </ Volume down (option)

• >/ Volume up (option)

• Power Button

• MENU/ Exit

• Contrast

• Brightness

• Focus

• Clock

• H.Position

• V.Position

• Language

• Input signal Selection

• Auto configuration (Analog model only)

• (Warm) Color

• (Cool) Color

• RGB Color temperature

• Reset

• OSD position /timeout

• Display information

• Exit

45 Watts

CUL, FCC, VCCI, CCC, MPRII, CE, TÜV/GS,

CE, TCO’99, ISO13406-2

Factory Preset Timing Table

Monitor Block Diagram

The LCD MONITOR contains a main board, an inverter/power board, keypad board and audio board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel. The Power will provide the 12V DC-power to inverter board and main board.

Monitor Block Diagram

POWER (90V-264V)

AUDIO IN

PWPC

AUDIO

ANALOG IN

DVI IN

MCU

DC-DC

LCD Controller

-Scaler

-OSD

-LVDS IC

-ADC

SPEAKER

KEY BOARD

LAMP

LCD PANEL

SPEAKER

AT24C02

(DDC) U301

VGA Input

MAIN BOARD DIAGRAM

DDC SCL/SDA

VGA R/G/B

VGA Hs / Vs

RXD/TXD

U601

VCC3.3V

VAA2

VAA1

U401

TSU16AK

VAA4

VAA3 VCC2.5V

PA 0~9

PB 0~9

Panel

VLCD

Winbon

AT24C16

EPR SDA/SCL

KEY Control

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