ACER AL1716v Service Manual

Acer AL1716

Service Guide

Service Guide Version and Revision

No. Version Release Date Revision

1.0

Jun.-24-2005

Initial release

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 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 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 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 m ost up-to-dat e 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 interferen ce in a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installe d 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 i nstallation. 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 unauthori zed 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.

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. 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.

 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.

 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. 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 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 scree n may remai n 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

Induction ……………………………………… 6 Electrical Requirements ……………………………………… 7 LCD Monitor General Specification ……………………………………… 8 LCD Panel Specification ……………………………………… 9 Support Timing ……………………………………… 10 Block Diagram ……………………………………… 11 Main Board Diagram ……………………………………… 12 Software Flow chart ……………………………………… 13 Main Board Layout ……………………………………… 15 Front Bezel ……………………………………… 16 Rear Bezel ……………………………………… 17

Chapter 2 Operating Instructions

External Controls ……………………………………… 18

……………………………………… 6

……………………………………… 18

Front Panel Controls ……………………………………… 19 Adjusting the picture ……………………………………… 20 Hot-Key Menu ……………………………………… 23 OSD Message ……………………………………… 23 LOGO ……………………………………… 24

Chapter 3 Machine Disassembly Chapter 4 Troubleshooting Chapter 5 Connector Information Chapter 6 FRU (Field Replacement Unit) List Exploded Diagram Chapter 7 Schematic Diagram

Analog ……………………………………… 41 TSUM16AK ……………………………………… 42 LVDS ……………………………………… 43

……………………………………… 25 ……………………………………… 32 ……………………………………… 37 ……………………………………… 38 ……………………………………… 39 ……………………………………… 41

Main board power supply ……………………………………… 44 Power Board ……………………………………… 45

Chapter 1

Monitor Features

Introduction

Scope

This specification defines the requirements for the 17” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub V GA connector. It also supports VESA DPMS power management and plug & play function. There is a build-in stereo audio amplifier with OSD control to drive a pair of speakers.

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 CR T monitor , it con sumes l ess powe r and gets less weight in addition MTBF target is 50k hours or more.

Chart of AL1716

Panel M170EG01 V.8

Signal Interface D-SUB

Sync Type Separate / Compatible Color Temp User Adjust Support DDC VESA DDC2B Speaker No Headphone Jack No Microphone Jack No USB Hub Not support Tilt / Swivel Yes / No Height Adjust Option

Electrical Requirements

Standard Test Conditions

All tests shall be performed under the following conditions, unless otherwise specified.

Ambient light Viewing distance Warm up time

Measuring equipment

Control settings

Power input Ambient temperature Analog input mode

All specifications 30 minutes Fully functional 5 seconds

User brightness control Maximum (unless otherwise specified) User contrast control Typical (unless otherwise specified) User red/white balance, Green/white balance and Blue/white balance control

Measurement systems

225 lux 40 cm in front of LCD panel

Chroma 7120 signal generator or equivalent, directly Connected to the monitor under test.

In the center (unless otherwise specified) 100VAC or 264VAC 20+

5℃ 1280 x1024 /75 Hz 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

LCD Monitor General Specification

Panel type

17 “ active matrix color TFT LCD

M170EG01 V.8

Display size

Display mode

Pixel pitch

Display dot

Pixel clock

Contrast ratio

Brightness

Response time (Tr+Tf)

Display color

337.920mm (H) × 270.336mm(V)

VGA 640 × 480 (60/75 Hz)

SVGA 800 × 600 (60/75 Hz)

XGA 1024 × 768 (60/70/75 Hz)

SXGA 1280 × 1024 (60/75 Hz)

0.264mm(H) × 0.264mm(V)

1280 x (RGB) × 1024

135MHz(max.)

500:1(typ.)

300 cd/m

8ms(Typ.)

16.2M(6-bits+FRC)

(typ.)

Viewing angle

Pc interface

Signal connector

Interface frequency

Plug & play

Power Input voltage

Power Consumption

H: 140 / V: 130 (typ.) (CR=10)

RGB Analog Interface

D-Sub 15pin

Horizontal Frequency 30KHz ----80KHz

Vertical Frequency 55Hz ------75Hz

VESA DDC2B

47-63HZ, 100 VAC to 264VAC ±10%

40 Watts (max.)

LCD Panel Specification

LCD Panel Model (M170EG01 V.8)

 Display Type active matrix color TFT LCD  Resolution 1280x1024 pixels  Display Dot 1280x (RGB) x 1024  Display Area 337.920mm(H) x 270.336mm(V)  Pixel Pitch 0.264mm(H) x 0.264mm(V)  Display Color 16.2M Colors  Lamp Frequency 60KHz(typ.)  Lamp Current 7.5mArms (typ.)  Weight 1900g (typ.)

Optical Specifications

Measuring Condition: Ta = 25°C(Room Temperature).

Supported Timing

Support Modes

There will be 20 total support modes to accommodate the above mode and other video modes within the frequency range of the monitor.

85Hz refresh rate Support

Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display “ Out of Range” warning menu at this mode.

Monitor Block Diagram

The LCD MONITOR will contain a main board; a power board, keypad board and which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel.

Power Board

(Inverter, adapter Board)

AC-IN 100V-240V

CCFL Drive

Main Board

Keyboard

Flat Panel and CCFL backlight

Host Computer

RS232 Connector For white balance adjustment in factory mode

Video signal, DDC

Main Board Diagram

C-S

LCD Interface

SST25VF010-20-

OSD Control

Interface (Keypad)

Scaler TSUM16AK

(Include: MCU, ADC, OSD etc)

EEPROM

24C02

D-SUB

Connector

EEPROM

T24C16N

Crystal

14.318MHZ

Software Flow Chart

Remark:

1) MCU initializes.

2) Is the EEPROM blank?

3) Program the EEPROM by default values.

4) Get the PWM value of brightness from EEPROM.

5) Is the power key pressed?

6) Clear all global flags.

7) Are the AUTO and SELECT keys pressed?

8) Enter factory mode.

9) Save the power key status into EEPROM. Turn on the LED and set it to green color. Scalar initializes.

10) In standby mode?

11) Update the lifetime of back light.

12) Check the analog port, are there any signals coming?

13) Does the scalar send out an interrupt request?

14) Wake up the scalar.

15) Are there any signals coming from analog port?

16) Display "No connection Check Signal Cable" message. And go into standby mode after the

message disappears.

17) Program the scalar to be able to show the coming mode.

18) Process the OSD display.

19) Read the keyboard. Is the power key pressed?

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