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 content s hereof and specifically discl aims 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 co st 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.
3
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 m ade, 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 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 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 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.
4
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, uses 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.
z 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.
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. 5A.
z 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
z 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.
z You may find slightly uneven brightness on the screen depending on the deskt op pattern you use.
z 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.
z Due to the nature of the LCD screen, an afterimage of the previou s 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.
External Controls ……………………………………… 21
Front Panel Controls ……………………………………… 22
Adjusting the picture ……………………………………… 23
OSD Message ……………………………………… 26
LOGO ……………………………………… 27
Chapter 3 Machine Disassembly ……………… ……………………… 28
Chapter 4 Troubleshooting ……………………………………… 34
Chapter 5 Connector Information ………………………… …………… 38
Chapter 6 FRU (Field Replacement Unit) List ……………………………………… 39
Chapter 7 Schematic Diagram ……………………………………… 43
Exploded Diagram ……………………………………… 40
6
Monitor Features
Chapter 1
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 VGA connector, 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 consumes less power and gets le ss weight in a ddition MTB F
target is 50k hours or more.
Chart of AL1702W
Panel HSD170MGW1-A01
Signal Interface D-Sub 15-pin
Sync Type Separate / Compatible
Color Temp User Adjust Support
DDC DDC2B
Speaker No
Headphone Jack No
Microphone Jack No
USB Hub Not support
Tilt / Swivel Yes / No
7
Electrical Requirements
Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light : Dark room
Viewing distance : 40 cm for LCD performance, 20 cm for LCD failures
Warm up time
All specifications :
Measuring equipment : Chroma 7120 signal generator or equivalent, directly
Connected to the monitor under test.
Minolta CA100 photometer, or equivalent
Control settings
User brightness control : Set to Factory preset value (cut off raster)
User contrast control : Set to factory preset value, which allows that the brightest two of
User red/white balance,
Green/white balance and
>30 minutes
32 linear distributed gray-scales (0~ 700mv) can be
distinguished.
Blue/white balance control : In the center (unless otherwise specified)
Power input :
Ambient temperature :
Display mode : 1440x900, 60 Hz, all white
230V± 5%
20+5℃
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
8
LCD Monitor General Specification
9
10
LCD Panel Specification
General Specifications
Mechanical Information
11
Optical Specifications
12
Supported Timing
13
Monitor Block Diagram
The LCD MONITOR will contain a main board, a power board, and keypad board which house the flat panel control
logic, brightness control logic and DDC.
The Inverter board will drive the backlight of panel and the DC-DC conversion,
The Adapter will provid e the 12V DC-power to inverter/power board.
Flat Panel and
CCFL backlight
Main Board
Inverter Board
CCFL Drive.
AC-IN
100V-240
Keyboard HOST Computer
Video signal, DDC
14
Main Board Diagram
RTD2120L-LF
OSD Control
Interface (Keypad)
Crystal
24MHZ
MCU
LCD Interface
Scalar: RTD2025L QFN-48
(Include: ADC, OSD etc)
D-SUB
Connector
15
Software Flow Chart
N
Y
N
18
N
10
12
14
19
1
Y
2
N
4
N
5
Y
6
N
7
Y
9
N
Y
Y
Y
11
13
15
17
3
8
N
Y
N
16
Y
16
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?
17
Main Board Layout
Symbol Description Symbol Description
U201 AP1117E33LA X401 24MHZ/30PF/49US
U401 IC MCU RTD2120L-LF REALTEK CN201 WAFER 9P RIGHT ANELE PITCH
U402 AZ431AN-A-E1 CN202 WAFER
U501 SCALER IC RTD2025L QFN-48 CN601 CONN W TO B12P*2 P*2.0 4505-2
18
Adjusting the viewing angle
19
Rear Bezel
Item Description Item Description
1. Power Cable 2. Signal Cable
20
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 thes e 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.
Chapter 2
External Controls
Item Description Item Description
1. Auto Config / Exit 4. >
2. < 5. MENU/ENTER
3. Power Button / Power Indicator
21
Front Panel Control
22
Adjusting the Picture
How to Adjust a Setting
1. Press the MENU-button to activate the OSD window.
2. Press <or >to select the desired function.
3. Press the MENU-button to select the function that you want to adjust.
4. Press < or > to change the settings of the current function.
5. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-4
Analog –Only Model
23
b.The Description For Function Control LEDS
24
25
OSD Message
a. Outline
b. The Description For OSD Message
Item Description
Auto Config
Please Wait
Input Not
Supported
Cable Not
Connected
No Signal
When Analog signal input, if User Press Hot-Key “Auto”, will show this messa ge, and the
monitor do the auto config function.
When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor
support range, will show this message. This message will be flying.
Analog-Only Model: When the video cable is not connected, will show this message.
This message will be flying.
Analog-Only Model: When the video cable is connected, but there is no active signal
input, will show this message, then enter power saving.
26
Logo
When the monitor is power on, the LOGO will be showed in the center, and disappear slowly.
How To Optimize The DOS-Mode
Plug And Play
Plug & Play DDC2B Feature
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the
monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional
information about its display capabilities.
The DDC2B is a bi-directional data channel based on the I²C protocol. The host can request EDID information over
the DDC2B channel.
This monitor will appear to be non-functional if there is no video input signal. In order for this monitor to
operate properly, there must be a video input signal.
This monitor meets the Green monitor standards as set by the Video Electronics Standards Association (VESA)
and/or the United States Environmental Protection Agency (EPA) and The Swedish Confederation Employees
(NUTEK). This feature is designed to conserve electrical energy by reducing power consumption when there is no
video-input signal present. When there is no video input signals this monitor, following a time-out period, will
automatically switch to an OFF mode. This reduces the monitor's internal power supply consu mption. Af ter the video
input signal is restored, full power is restored and the display is automatically redrawn. The appearance is similar to
a "Screen Saver" feature except the display is completely off. Pressing a key on the keyboard, or clicking the mouse
restores the display.
Using The Right Power Cord
The accessory power cord for the Northern American region is the wallet plug with NEMA 5-15 style and is UL listed
and CSA labe led. The voltage rating for the power cord shall be 125 volts AC.
Supplied with units intended for connection to power outlet of personal computer: Please use a cord set co nsisting of
a minimum No. 18 AWG, type SJT or SVT three conductors flexible cord. One end terminates with a grounding type
attachment plug, rated 10A, 250V, and CEE-22 male configuration. The other end terminates with a molded-on type
connector body, rated 10A, 250V, having standard CEE-22 female configuration.
Please note that power supply cord needs to use VDE 0602, 0625, 0821 approval power cord in European cou nties.
27
Machine Disassembly
Chapter 3
This chapter contains step-by-step procedures on how to disassemble the monitor for
maintenance.
Disassembly Procedure
1. Remove the screws to release base stand and gemel. (Fig 1-3)
Fig 1
Fig 2
28
Fig 3
2. Remove the screws to remove the back cover. (Fig 4)
Fig 4
29
3. Remove the screws to remove the shield . (Fig 5)
Fig 5
4. Remove the bezel. (Fig 6)
Fig 6
30
5. Remove the screws to remove the panel. (Fig 7-9)
Fig 7
Fig 8
Fig 9
31
6. Remove the screw to remove the main board. (Fig 10)
Fig 10
7. Remove the screws to remove the power board. ( Fig 11-12 )
Fig 11
32
Fig 12
33
Troubleshooting
Chapter 4
This chapter provides troubleshooting information for the AL1702W:
1. No Power
No power
Press power key and look if the
picture is normal
NG
Please reinsert and make sure the
AC of 100-240 is normal
OK
Measure U201 Pin 3=5V, U201 Pin
2=3.3V
OK
NG
Check if X401 oscillate
waveforms are normal
Replace X401
NG
OK
Replace U401
if the picture is normal
NG
NG
Reinsert or check the
power section
Measure CN201 Pin3=5V?
OK
Replace U201
Replace U501
34
2. No Picture
No picture
Measure U201 PIN2=3.3V
OK
Check if X401oscillate waveforms are
normal
OK
Check if the sync signal from
computer is output and video cable
is connected normally
OK
NG
NG
NG
Replace U201
Replace X401
Input the sync signal of computer, or
change the cable
Replace U401,U501
35
3. Panel Power Circuit
Check CN601 PIN 23-24 should have
response from 0V to 5V When we
switch the power switch from on to off
OK
Replace panel
4. Keypad Board
OSD is unstable or not working
Is Keypad board connecting normally?
OK
Is Button Switch normally?
OK
Is Keypad board normally?
OK
Check main board
Check the PPWR panel power relative circuit Q601, Q602
NG
In normal operation, when LED =green, R601 =5 V,
If PPWR no-response when the power switch
Turn on and turn off, replace the U401- RTD2120L
NG
Connect Keypad Board
NG
Replace Button Switch
NG
Replace Keypad Board
36
5. No Backlight
Check C802 (+) =12V
OK
NG
Change FB801,Check Q805
Q808, Q810
Check ON/OFF signal
OK
NG
Check Interface board
Check IC801 pin12=5V?
OK
NG
Change Q805.Q808 or Q810
Check the pin9&10 of IC801 have PWM wave
NG
Change IC801
NG
Replace IC801
OK
OK
Check the resonant wave
of pin6 & pin1 for PT801
OK
Check the output of PT801
OK
Check connecter & lamp
NG
NG
CheckQ801/Q802/Q804/
Q811or /Q812
Check Q809Q801/Q802/Q811/Q812
Change PT801
37
Connector Information
The following figure shows the connector locations on the monitor:
Chapter 5
38
FRU (Field Replaceable Unit) List
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1702W.Refer to this
chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).
NOTE: Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel (http://aicsl.acer.com.tw/spl/). For whatever reasons 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 from those given in the FRU list of
this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order
FRU parts for repair and service of customer machines.
NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on
how to dispose it properly, or follow the rules set by your regional Acer office on how to return it.
Chapter 6
39
Exploded Diagram (Model: AL1702W)
40
Part List
Above picture show the description of the following component.
Item Picture Description
1
2
Base
shield
3
4
Key board
Panel
41
5
6
Power Board
Main Board
42
Schematic Diagram
Chapter 7
Main Board
CN201
1
CONN
2
3
4
5
6
7
8
9
CMVCC
CMVCC
BKLT-VBRI
BKLT-EN
C_PANEL_INDEX
Volume#
Mute
Panel ID(3.3V PW M)
Back l i gh t
Dimming(3.3V PWM)
CMVCC
DIM#{4}
PANEL_ID# {4}
Volume#{4}
Mute{4}
CMVCC
FB201
120
C202
'07-01-10 change to Elite
100uF/25V
MVCC
C204
+
0.1uF/16V
AP1117E33LA
* BKLT-EN High ON(3. 3V)
U201
FB202
VSS
1
NC
VOUTVIN
23
BKLT-EN
C205
0.1uF/16V
R201
200 1/16W
C206
0.1uF/16V
VCC3
C203
+
100uF/25V
'07-01-10 change to Elite
VCC3
R202
4K7 1/16W
Q202
PMBS3904
INV_ON#{4}
CN202
CONN
VCC3
R207
120R 1/16W
'06-11-3 Remove R209(470 ohm)
1
2
3
4
5
6
ZD202
NC
12
C209
0.1uF/16V
ZD203
12
NC
C201
0.1uF/16V
12
'06-12-29-3 Remove R211,R212(470ohm)
ZD201
C210
NC
0.1uF/16V
KEY0
KEY1
POWER_KEY #
LED_G
LED_R
KEY1{4}
POWER_KEY # {4}
LED_R
LED_G
Near to Connect
Q204
PMBS3906
R208
120R 1/16W
R210 10K 1/16W
Q205
PMBS3906
'06-12-29-3 Change R207,R208 Value
from 470ohm to 120ohm