Acer AL1917 User manual

Acer AL1917
Service Guide

Service Guide Version and Revision

Copyright
Copyright 2006 ,
All rights reserved.
electronic machine readable form without prior written permission of Acer Incorporated.
ACER AL1917 Service Manual.
Printed in Taiwan.
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
Trademarks
All other trademarks are property of their respective owners.
Conventions

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
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,
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:
2. Increase the separation between the equipment and receiver.
4. Consult the dealer or an experienced radio/TV technician for help.
Notice:
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,
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

Precautions
a wet basement
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
• Slots and openings in the back and bottom of the cabinet are provided for ventilation. To ensure reliable
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 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
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,
shock. Never spill liquids on the monitor.
• To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate
configured receptacles marked between 100 - 240VAC, Min. 5A.
• The wall socket shall be installed near the equipment and shall be easily accessible.
Special Notes On LCD Monitors
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
LCD Panel Specific
Software Flow chart
Installation Instruction
Machine Disassembly
T roubleshooting
FRU (Field Replacement Unit) List

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. It also
supports VESADPMS 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
space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF
Before you operate the monitor
Features
48 cm (19”) TFT Color LCD Monitor
Crisp, Clear Display for Windows
Recommended Resolutions: 1280 X 1024 @60Hz
EPA ENERGY STAR®
Ergonomic Design (TCO" 03 Approved)
Space Saving, Compact Case Design
Checking the contents of the package
The product package should include the following items:
1. LCD Monitor
2. Owner's Manual
3. Power Cord
4. 15-pin D-Sub Cable
5. Audio Cable
6. Quick Start Guide
7. Audio Cable

Electrical Requirements
Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
-Warm uptime
-AC supply voltage
-Ambient temperature
- Humidity
- Display mode
- Contrast control
> 30 i
230V± 5%, 50+ 3 Hz
20°C ± 5°C
65% ± 20%
1280x1024, 60 Hz, all white
Set to factory preset value,
of 32 linear distributed c
!, 20
s that the brightest two
(0 ~ 700mv) can be
•LCD failures

LCD Monitor General Specification

LCD Panel Specification
LCD Panel Model
Weight
Physical Size
Support Color
[cd/m2]
[Volt]
[Grams]
Specifications
480 (19.0”)
376.32 (H)x 301.06 (V)
1280(x3) x 1024
0.294 (per one triad) x 0.294
R.G.B. Vertical Stripe
270 (center, Typ) @ 7mA
550: 1 (Typ)
8 ms(Typ, on/off)
72% NTSC
+5.0 V
2700 (Max)
396 (H) x 324 (V) x 18 (D) (Typ)
16.2M colors (RGB 6-bit data+FRC data)
Temperature Range
Operating [°C]
Storage (Shipping) [°C]
TCO’03 compliance
Surface Treatment
RoHS
0 to + 50
- 20 to + 6
TCO’03 compliance
Hard-coating (3H), N<
RoHS Compliance

Optical Specifications
Measuring Condition: Ta = 25°C.
10

Supported Timing
STANDARD RESOLUTION
HORIZONTAL
FREQUENCY(kHz)
VERTICAL
FREQUENCY(Hz)
VGA
640 x 480 31.469 59.940
640 x 480 37.500 75.000
800 x 600 37.879 60.317
800 x 600 46.875 75.000
VESA
1024 x 768 48.363 60.004
XGA
1024 x 768 56.476 70.069
1024 x 768 60.023 75.029
SXGA
1280 x 1024 64.000 60.000
1280 x 1024 80.000 75.000
IBM DOS 720 x 400 31.469 70.087
MAC XGA
1024 x 768 48.780 60.001
1024 x 768 60.241 74.927
Support Modes
There will be 20 total support modes to accommodate the above mode and other video modes within the freque
range of the monitor.
85Hz refresh rate Support
Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should d
warning menu at this mode.
display “ Out of

Monitor Block Diagram
The LCD MONITOR will contain a main board, a 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.
12

Main Board Diagram
DB15_SDA
DB15_SCL
EEPROM
(U404)
13

Software Flow Chart

15

Main Board Layout

Front Bezel
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
. The power cord should be connected.
• Connect the video cable from the monitor to the video card.
• Press the power button to turn on the monitor position, The power indicator will light up.
External Controls Front Panel Control
MENU/ENTER Auto Adjust / Exit

Installation Instructions
Swivel Base
Install Remove
Adjusting The Viewing Angle
• For optimal viewing it is recommended to look at the full face of the montor, then adjust the monitor's angle to your
own preference.
■ You are able to adjust the monitor's angle from -5° to 15°.

Chapter 2
Operating Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
• The power cord should be connected.
• Press the power button to turn on the monitor position. The power indicator will light up.
Front Panel Control
• (D/Power Button:
Power Indicator:
Green - Power on mode.
Orange - Off mode.
Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD
menu when in Volume Adjust OSD status.
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or
adjust a function when function is activated.
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or
adjust a function when function is activated.
Auto Adjust button I Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
The Auto Adjustment function is used to set the FIPos, VPos, Clock and Focus.
NOTES
• Do not install the monitor in a location near heat sources such as radiators or air ducts, or in a place subject to
• To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a
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