Acer AL1516 User manual

Acer AL1516
Service Guide

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Service Guide Version and Revision
No. Version Release Date Revision TPV Model Name
1
1.0 April -17-2006 Initial release T566KV5HKGAENP

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Copyright
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.
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.

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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 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 andAC 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 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.

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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 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.
zSlots 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.
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. 5A.
zThe 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
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 on 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 Monitor Features ……………………………………… 6
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 ……………………………………… 18
External Controls ……………………………………… 18
Front Panel Controls ……………………………………… 19
Adjusting the picture ……………………………………… 20
OSD Message ……………………………………… 23
LOGO ……………………………………… 24
Chapter 3 Machine Disassembly ……………………………………… 25
Chapter 4 Troubleshooting ……………………………………… 32
Chapter 5 Connector Information ……………………………………… 37
Chapter 6 FRU (Field Replacement Unit) List ……………………………………… 38
Exploded Diagram ……………………………………… 39
Chapter 7 Schematic Diagram ……………………………………… 41
Main Board ……………………………………… 41
Power Board ……………………………………… 46

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Monitor Features
Introduction
Scope
This specification defines the requirements for the 15” MICROPROCESSOR based Multi-mode supported high
resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGAconnector. 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
radiation. This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop
space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF
target is 50k hours or more.
Chart of AL1516
Panel SVA150XG04TB
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
Cha
p
ter 1

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Electrical Requirements
Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light 225 lux
Viewing distance 40 cm in front of LCD panel
All specifications 30 minutes
Warm up time Fully functional 5 seconds
Measuring equipment Chroma 7120 signal generator or equivalent, directly
Connected to the monitor under test.
User brightness control Maximum (unless otherwise specified)
User contrast control Typical (unless otherwise specified)
Control settings
User red/white balance,
Green/white balance and
Blue/white balance control
In the center (unless otherwise specified)
Power input 100VAC or 264VAC
Ambient temperature 20+5℃
Analog input mode 1024x768/60Hz
Measurement systems
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

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LCD Monitor General Specification
15 “ active matrix color TFT LCD
Panel type SVA150XG04TB
Display size 304.128mm (W) ×228.96mm(H)
Pixel pitch 0.297mm(H) ×0.297mm(V)
Pixel 1024(H) ×768(V) Pixel
Contrast ratio 450:1(typ.)
Brightness 250 cd/m2 (typ.)
Response time (Tr+Tf) 16ms
Display color 16.7M
Viewing angle (CR>=10) H: 120 / V: 100 (typ.)
Pc interface RGB Analog Interface
Signal connector D-Sub 15pin
Horizontal Frequency 30KHz----60KHz
Interface frequency Vertical Frequency 55Hz ------75Hz
Dimensions 342(W)×352(H)×162(D) mm
Plug & play VESA DDC2B
Power Input voltage 47-63HZ, 100 VAC to 264VAC ±10%
Power Consumption (Max.) 35 Watts
Regulatory Compliance CUL, FCC, VCCI, CCC, CE, TÜV/GS, TCO’99,

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LCD Panel Specification
LCD Panel Model (SVA150XG04TB)
zDisplayType activematrixcolorTFTLCD
zPixel 1024(H)×768(V) Pixel
zDisplay Area 304.128mm (W) ×228.96mm(H)
zPixelPitch 0.297mm(H) ×0.297mm(V)
zDisplayColor 16.7MColors
zLamp Frequency 55KHz(max.)
zLamp Current 7.5mArms (typ.)
zWeight 1000g (typ.)
Optical Specifications
Measuring Condition: Ta = 25°C(Room Temperature).

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Supported Timing
ٛ.

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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.
Video signal, DDC
Power Board
(Inverter, adapter Board)
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector For
white balance adjustment
in factory mode
Host Computer
CCFL Drive
AC-IN
100V-240V

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Main Board Diagram
LCD Interface
Scaler TSUM16AK
(Include: MCU, ADC, OSD etc)
(U401)
SST25VF010A-33-4C-SAE
(U402)
OSD Control
Interface (Keypad)
(CN403)
EEPROM M24C02
(U404)
D-SUB Connector
(
CN405
)
Crystal
14.318MHZ
(
X401
)
EEPROM M24C16
(
U403
)

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Software Flow Chart
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
15
Y
N16
17
19
Y
N
18

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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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Main Board Layout
Label Part NO Description
CN405 088G 35315F H D-SUB 15PIN
CN101 033G8027 14 H WAFER
U401 056G 562100 TSUM16AK
X401 093G 22 53 CRYSTAL 14.318MHzHC-49US
U402 056G1133 74 SST25VF010A-33-4C-SAE
U403 056G113356A 24LC16B/SNG SOIC-8PIN
U404 056G113334A 24LC02B/SNG SOIC-8PIN
U702 056G 563 21 AP1084K33LA
U701 056G 585 4 AIC1117-33CY

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Front Bezel
External Controls Front Panel Control
Item Description Item Description
1. Auto Adjust / Exit 4. MENU/ENTER
2. < 5. Power Indicator
3. > 6. Power Button

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Rear Bezel
Turn off your computer before performing the procedure below.
1. Plug the power cable of your monitor into a nearby outlet. Plug the other end of the power cord into the PC port.
2. Connect one end of the 15-pin VGA cable to the back of the monitor and connect the other end to the computer’s
D-Sub port.
3. Turn on your monitor and computer.
Item Description
1. Power Cable
2. Signal Cable

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OperatingInstructions
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.
•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
Item Description Item Description
1. Auto Adjust / Exit 4. MENU/ENTER
2. < 5. Power Indicator
3. > 6. Power Button
Cha
p
ter 2

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Front Panel Control
•/Power Button:
Press this button to turn the monitor ON or OFF. And display the monitor’s state.
•Power Indicator:
Green – Power on mode.
Orange – Off mode.
•Menu / Enter:
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.
•<:
Negative through adjustment icons when OSD is ON or adjust a function when function is activated.
•>:
Navigate through adjustment icons when OSD is ON or adjust a function when function is activated.
•Auto Adjust button / Exit:
1.When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
2.When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, 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
direct sunlight, or excessive dust or mechanical vibration or shock.
•Save the original shipping carton and packing materials, as they will come in handy if you ever have to ship your
monitor.
•For maximum protection, repackage your monitor as it was originally packed at the factory.
•To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a
cloth lightly dampened with a mild detergent solution. Never use strong solvents such as thinner, benzene, or
abrasive cleaners, since these will damage the cabinet.As a safety precaution, always unplug the monitor before
cleaning it.