Acer AL1706 User Manual

Acer AL1706

Service Guide

Copyright © 2005 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 compute r language, I any form or by any me ans, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without t he 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 t he 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 program s prove defective following their purc ha se, 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 reulting 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 t ra de marks of Intel Corporation Other brand and product names are trademarks and/o r regi stered trademarks of their respective holders.

Conventions

The following conventions are used in this manual

Screen Messages Denotes actual messages that appear on

screen.

NOTE Give 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 accomplishments 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 “ gl o ba l” p rod uct offering. To better fit local market requirements and enha nc e product competitiveness, your regio n al o f fice 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 cased, please contact your r e gio nal offices or the responsible personnel/channel to provide you with further technical details.

2. Please not WHEN ORDER 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 printe d Service Guide. For ACER-AUTHORIZED SERVICE PROVIEDERS, 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 provide d by you r regional Acer office to order FRU p arts 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 th e FC C Ru les. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates use s an d can radiate radio freque ncy 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 i n a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determ ine d by tur ning the equipm e nt of f and on, the user is encouraged to try to correct the i nterf erence by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment an d receiver.

3. Connect the equipment int o 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 h elp.

Notice:

1. The changes or modificatio ns n ot 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 modificati on to this equipment. It is the resp onsibility 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 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

 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. User 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 following the kit instructions.

 Slots and openings in the back and bottom of the cabinet are provide 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. 3.5A.

 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 indicated 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 10

Monitor Features…………………………………………………………………… Factory Preset Timing Table…………………………………………………….. Monitor Block Diagram…………………………………………………………… Interface Board Diagram…………………………………………………………. Software Flow Chart………………………………………………………………. Interface Board PCB Layout…………………………………………………….. Front Bezel…………………………………………………………………………. Rear Cover………………………………………………………………………….

Chapter 2 Operating Instruction 20

Front Bezel Control……………………………………………………………….. Adjusting the Monitor…………………………………………………………….. How to Optimize the DOS-Mode…………………………………………………

Chapter 3 Machine Assembly 27 Chapter 4 Troubleshooting 31

Common Acknowledge…………………………………………………………… Interface Board Troubleshooting……………………………………………….. QPI PCBA Troubleshooting……………………………………………………….

Chapter 5 Connector Information 40

VGA Connector Pin Assignment…………………………………………………

Chapter 6 FRU (Field Replaceable Unit) 42

Exploded Diagram………………………………………………………………….. Part List……………………………………………………………………………….

Chapter 7 Schematic Diagram 43

MONITOR FEATURES

LCD Panel

Signal

Display Color Dot Clock Max. Resolution Plug & Play EPA ENGERGY STAR ON MODE < 35W

Driving System TFT Color LCD

Size 17” Pixel pitch 0.264mm (H) x 0.264mm (V) Viewable angle Brightness Contrast Ratio 500:1 (typ.) Response Time 12ms (typ.) Video RGB Analog Interface (Analog only model) Separate Sync. H/V TTL H-Frequency 31.5KHz to 60.241KHz V-Frequency 56Hz to 75Hz

140ﾟ(H), 140 ﾟ(V) 270cd/m

6bits+FRC 80MHz 1024 x 768 @75Hz VESA DDC 1/2B

2 (typ.)

Input Connector

Input Video Signal

Maximum Screen Size Horizontal 338 mm

Power Source Environmental Considerations

Weight (Net) Dimension

OFF MODE <1W

Vertical 270 mm

D-Sub 15pin Three-Pronged Pin Analog: 0.7Vp-p (Standard), 75 OHM, Positive (Analog-Only Model)

100~240VAC, 50~60Hz Operating Temp: 5℃ to 40℃ Storage Temp: -20℃ to 60℃ Operating Humidity: 5% to 95%

3.7Kg

343.4 (W) x 351.4 (H) x 159.8 (D) mm

External Controls Switch

Power Switch Menu

Function Contrast/Brightness Phase/Clock H. Position/ V. Position

Regulatory Compliance

< Auto

Color (Warm, Cool, User) Language OSD (H. Position, V. Position, Timeout) Auto Config Information

Reset Exit

UL, CSA, TUS+GS, CG, PSB, B-MARK, PSE, Ergo, FCC, BSMI, VCCI, C-Tick, TCO99, CCC, WHQL

FACTORY PRESET TIMING TABLE

Standard Resolution Horizontal Frequency (KHz) Vertical Frequency (Hz)

VGA

SVGA

XGA

640 x 480 31.469 60.000 640 x 480 37.861 72.809 640 x 480 37.500 75.000 800 x 600 35.156 56.250 800 x 600 37.879 60.317 800 x 600 48.077 72.188

800 x 600 46.875 75.000 1024 x 768 48.363 60.004 1024 x 768 56.476 70.069 1024 x 768 60.023 75.029

1280 x 1024 63.981 60.020 SXGA 1280 x 1024 79.976 75.025

640 x 350 31.469 70.087 IBM

720 x 400 31.470 70.080

MAC

832 x 624 49.725 74.551 1024 x 768 48.780 60.001 1024 x 768 60.241 74.927

Monitor Block Diagram

The LCD monitor contains 4 parts:

1. interface board: Deal with VGA input signal and output the signal to panel.

2. Power/inverter board: Provide power to interface board and panel

3. Keypad board: For user to control the L CD monitor.

4. Flat panel:

Flat panel (LVDS interface) and CCFL

Inverter/Power BD

(Including AC/DC

Power Supply and

AC input

Range 90V~264V

Interface Board (VGA input)

Keypad BD

Host computer

(VGA signal input and DDC)

MAIN BOARD DIAGRAM

Interface Board

Red Green Blue

Vsync Hsync

SCL

SDA

DDC

MCU

A/D

LCD

Scaling

module

& OSD

EEPROM

Software Flow Chart

ACER 17” flow chart item description:

1. MCU initialize.

2. Is the EEProm blank?

3. Program the EEProm by default values.

4. Get the user value and mode setting from EEProm.

5. Are the factory key pressed?

6. Enter factory mode.

7. Check the analog port, are there any signal coming?

8. Display “No Signal” message.

9. Enter sleep mode.

10. Wake up the scalar.

11. Program the scalar to be able to show the coming mode.

12. Turn on the LED and set it to green color.

13. Process the OSD display

14. Read the keyboard. Is any key pressed?

(1)

(2)

(4)

(5) (6)

(7)

(10)

(11)

(12)

(3)

(8)

(9)

(13)

(14)

MONITOR INTERFACE BOARD PCB LAYOUT

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