Acer AL1716 User manual

Table of Contents
Important Safety Notice------------------------------------------------------------------------------------- 01
01. Product Specification--------------------------------------------------------------------------------- 02
02. Flat Panel Specification-------------------------------------------------------------------------------07
03. Exploded Diagram
04.
Appendix : User’s Manual
------------------------------------------------------------------------------------- 12
Troubleshooting----------------------------------------------------------------------------------------14
05. Spare Parts List-----------------------------------------------------------------------------------------23
06. Schematics and Layouts------------------------------------------------------------------------------ 31
07. Assembly and Disassembly-------------------------------------------------------------------------- 41
Safety Notice
Any person attempting to service this chassis must familarize with the chassis and be aware of the
necessary safety precautions to be used when serving electronic equipment
containing high voltage.
Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification
10th-May-2007
Model ID: T17ANHW-G1
Service
ACER
ACER_LCD_AL1716W_SM070510V1
Service Manual

Product Anouncement:
This product is certificated to meet RoHS Directive and
Lead-Free produced definition. Using approved critical
components only is recommended when the situation
to replace defective parts. Vender assumes no liability
express or implied, arising out of any unauthorized
modification of design or replacing non-RoHS parts.
Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe,
reliable operation of all series products. The service
providers recommended by vender should being
aware of notices listed in this service manual in order
to minimize the risk of personal injury when perform
service procedures. Furtermore, the possibile existed
improper repairing method may damage equipment or
products. It is recommended that service engineers
should have repairing knowledge, experience, as well
as appropriate product training per new model before
performing the service procedures.
NOTICE:
To avoid electrical shocks, the products should be
connect to an authorized power cord, and turn off the
master power switch each time before removing the
AC power cord.
To prevent the product away from water or explosed
in extremely high humility environment.
To ensure the continued reliability of this product,
use only original manufacturer’s specified parts.
To ensure following safty repairing behavior, put the
replaced part on the components side of PWBA, not
solder side.
!
!
!
!
To ensure using a proper screwdriver, follow the
torque and force listed in assembly and disassembly
procedures to screw and unscrew screws.
!
Using Lead-Free solder to well mounted the parts.!
!The fusion point of Lead-Free solder requested in the
degree of 220 C.°
Important Safety Notice
Go to cover page
1
ACER AL1716W

1.1 Scope:
This document defines the design and performance
requirements for the Liteon standard 17” wide flat
panel monitor. The display element shall be a 17” inch
diagonal, WXGA (1440 x 900) resolution, TFT-LCD
(Thin Film Transistor Liquid Crystal Display). Video
input signals are Analog D-sub with non-interlaced
signaling. Power saving function complies with the
DPMS (Display Power Management Standard).
1.1.1 General display parameters
1.1.2 Optical Characteristics
The panel model name is HSD170MGW1-A
supplied by Hannstar.
1.2.3 Electrical
This section describes the electrical requirement of
the monitor. The block diagram in Figure 1 illustrates
the various electrical sub–system.
1.2 General Requirements:
1.2.1 Test Condition
Brightness level at max & contrast level at default
full white pattern test mode following spec. Warm
up more than 30min, ambient light < 1 Lux,
Luminance meter CA210 or BM7 or compatible
equipment.
1.2.2 Test Equipment
The reference signal source is a calibrated
Chroma 2326 or Quantum 801GD video
generator. The use of other signal generators
during qualification and production is acceptable
provided the product complies with this
specification.
The LCD monitor will contain an interface board, a
Power/Inverter board, and a function key board. The
interface block will house the flat panel control logic,
brightness control logic, and DC-DC conversion to
supply the appropriate power to the whole board and
LCD panel, and transmitting LVDS signals into LCD
Module to drive the LCD display circuit. The inverter
block will drive the two CCFLs (Cold Cathode
fluorescent Tube). The power block will provide the
DC power to interface board and LCD panel. The
function key block will provides the OSD control
signal, power ON/OFF and LED indicator to the
interface board.
Display Area 17” diagonal,367.2(H)x229.5(V)
Resolution 1440 x 900 pixels
Display Color Number 16.2M colors
Display Type a-Si TFT active-matrix
Contrast Ratio 500 : 1 typ.
Brightness 250cd/m2typ.
Response Time (Ton + Toff) 8 ms typ.
Pixel Pitch 0.255mm x 0.255mm RGB Vertical Stripes
130 degrees typ,
CR>10
140 degrees typ,
CR>10
Vertical Viewing
Horizontal Viewing
LCD Panel
Function Key Board
Scaler IC
GM5726H
Regulator
5V ~ 3.3V
5V ~ 1.8V
EEPROM
24C02
D-SUB
XTAL
14.318MHz
EEPROM
24CL16
SST25VF01
Power & Inverter
AC 110/220V
Input
Inverter Output
Analog Video
Input
+5V & DIM & Enable
LVDS
DIM & Enable
+5V Vcc
R.G.B & Hs, Vs
5V
SPEC
H 31kHz ~ 83kHz
V 56Hz ~ 76Hz
Max Pixel clock 205MHz
RGB Input Level 0.7Vp-p
RGB Input Impedance 75Ω
Sync Input Signal Separate SYNC, Composite Sync
Sync Input Impedance 50Ω
AC power AC 100V ~ AC 220V ± 10% 50/60Hz, 3 pin
AC power cord
Input connectors D-SUB 15 pin
AC IN 90~264V
Standby, Suspend,
Active Off
Power Off < 1W @ (90VAC~240VAC)
User’s Control Front Panel Buttons POWER, MENU, SELECT, + , -
18
VESA DDC2B
DPMS
H ±1kHz, V ±1 Hz
Normal Operation
ITEM
Analog Signal Input
Frequency Ranges
Connectors
Power Consumption
35W Max
<2W
Dimming control range
Power Saving
Input Signal Counter tolerance
(max-min/max) x 100% 35% typical
Pre-Defined Timing
Plug and Play
1. Product Specification
2
Go to cover page
ACER AL1716W

1.3 Interface Connectors:
1.3.1 The AC inlet connector shall have an IEC/CEE22
type male power receptacle for connection to
mains power. The power cord exact type to be
supplied in the appropriate Option Kit, shall be
black have length of 1.8+/- 0.05 meters.
1.3.2 Signal connectors and cable: The analog signal
cable shall be black and 1800 mini-meters; at the
end of the analog cable shall be a molded-over,
shielded, triple row, blue color D ,
15 positions connector. The CPU connection
shall have captive screw locks, which will be
adequate for hand tightening. The monitor
connection may use small screws.
1.3.3 Connector pin assignment:
subminiature
1.4 Input Signals (Analog RGB Signal Input):
Note 1: 2.2k to Ground, Schmitt-Triggers Input,
Supported 3.3V deviceH&Vsync. output.
1.4.1 Video Signal Amplitudes
The three video inputs consist of Red, Green,
and Blue signals, each with its own coaxial cable
terminated at the monitor. These video signals
are analog levels, where 0V corresponds to
black, and 735 mV is the maximum signal
amplitude for the respective color, when each
signal is terminated by a nominal 75.0 ohm. For
a given monitor luminance levels are measured
using this defined video amplitude driving a
monitor meeting the termination requirements.
The signal amplitude is not to be readjusted to
compensate for variations in termination
impedance.
1.4.2 Video Signal Termination Impedance
This analog video signal termination shall be 75
ohm +/- 2% which shall be resistive with a
negligible reactive component.
1.4.3 Synchronization (Sync) Signals
The Horizontal Sync (HS) TTL signal is used to
initiate the display of a horizontal line. HS may
be either active high or active low, depending
upon the timing. The Vertical Sync (VS) TTL
signal is used to initiate the display of a new
frame. VS may be either active high or active
low, depending on the timing.
1.4.4 Sync Signal Levels
The monitor must accept sync signals from both
3.3V and 5V TTL logic families. The inputs shall
sense a logic 0 when the input is 0.8V or less and
shall sense a logic 1 when the input is 2.0V or
greater. In addition to these level requirements,
there shall also be a minimum of 0.3V hysteresis
provided for noise immunity (typically by using a
Schmitt Trigger input). That is, the input level at
which the monitor actually detects a logic 0 shall
be at least 0.3V lower than the level at which it
actually detects a logic 1.
D-SUB
Pin Signal Pin Signal Pin Signal
1 Red-Video 6 Red-GND 11 GND
2 Green-Video 7 Green-GND 12 DDC-SDL
3 Blue-Video 8 Blue-GND 13 H-SYNC
4 GND 9 + 5V 14 V-SYNC
5 Self Test 10 DDC-GND 15 DDC-SCL
Power Board Connector
Pin Signal
1GND
2GND
3GND
45.2V
55.2V
65.2V
75.2V
8 BKLT-EN
9 BKLT-ADJ
Flat Panel Connector
Terminal
no. Symbol Function Note
1 GND Ground
2 VDD Power supply: +0.5V
3 VDD Power supply: +0.5V
4 NC Reserved for supplier test point
5 NC Reserved for supplier test point
6 NC Reserved for supplier test point
7 NC Reserved for supplier test point
8 Odd_Rin0- - LVDS differential data input (R0-R5, G0) (2)
9 Odd_Rin0+ + LVDS differential data input (R0-R5, G0) (2)
10 GND Ground
11 Odd_Rin1- - LVDS differential data input (G1-G5, B0-B1) (2)
12 Odd_Rin1+ + LVDS differential data input (G1-G5, B0-B1) (2)
13 GND Ground
14 Odd_Rin2- - LVDS differential data input (B2-B5, NC, NC, DE) (2)
15 Odd_Rin2+ + LVDS differential data input (B2-B5, NC, NC, DE) (2)
16 GND Ground
17 Odd_ClkIN- - LVDS differential clock input (2)
18 Odd_ClkIN+ + LVDS differential clock input (2)
19 GND Ground
20 Even_Rin0- - LVDS differential data input (R0-R5, G0)
21 Even_Rin0+ + LVDS differential data input (R0-R5, G0)
22 GND Ground
23 Even_Rin1- - LVDS differential data input (G1-G5, B0-B1)
24 Even_Rin1+ + LVDS differential data input (G1-G5, B0-B1)
25 GND Ground
26 Even_Rin2- - LVDS differential data input (B2-B5, NC, NC, DE)
27 Even_Rin2+ + LVDS differential data input (B2-B5, NC, NC, DE)
28 GND Ground
29 Even_ClkIN- - LVDS differential clock input
30 Even_ClkIN+ + LVDS differential clock input
No. Symbol Item Min Normal Max Unit Remark
1 Fh Horizontal Frequency 31 83 kHz Minimum range
2 Fv Vertical Frequency 56 76 Hz Minimum range
3 Fclk Locked Pixel Clock Frequency 135 MHz
4 Vih Hi Level Input 2 5 V Note 1)
5 Vil Low Level Input 0 0.8 V Note 1)
6 Video RGB Analog Video Level 0 0.735 V 75Ω to Ground
1. Product Specification (continued)
Go to cover page
3
ACER AL1716W

If the monitor sync processing circuits are
designed around the 3.3 volt logic family, then
the sync inputs must be 5 volt tolerant.
1.4.5 Sync Signal Loading
TTL input loading shall be equivalent to one TTL
input load. When logic 0 is asserted by a sync
input, the maximum current source from any
single monitor sync input to the driver is 1.6 mA.
When logic 1 is asserted, the maximum current
source from the driver to any single monitor sync
input is 400 mA.
1.4.6 Abnormal Signal Immunity
The monitor shall not be damaged by improper
sync timing, pulse duration, or absence of sync,
or abnormal input signal amplitude (video and/or
sync too large or too small), or any other
anomalous behavior of a graphics card video
generator when changing modes or when any
combination of input signals is removed or
replaced. Additionally, under these conditions,
the monitor shall not cause damage to the driving
source.
1.5 User Controls and Indicators:
1.5.1 Power On / Off Switch: The monitor shall have a
power control switch visible and accessible on
the front of the monitor. The switch shall have no
effect on the operation of the AC/DC converter.
Instead, it shall interrupt the DC supply to the
monitor.
1.5.2 Power Indicator LED: The monitor shall make
use of a LED type indicator located on the front of
the monitor. The LED color shall indicate the
power states as given in Table 1.
1.5.3 On-Screen Display: The On Screen Display
system shall be used, controlled by a select
button (SELECT), a menu button (MENU), a plus
(+) button and a minus (-) button. If the buttons
remain untouched for OSD turn off time while
displaying a menu, the firmware shall save the
current adjustments and exit. Also, if the video
controller changes video mode while the OSD is
active, the current settings shall be saved
immediately, the OSD turned off, and the new
mode is displayed.
1.5.4 Key Function Overview: All functions are controllable
by OSD using five buttons including Power button,
Menu/Exit, Select, Left, and Right on the front bazel.
1.5.5 Menu Operation
Pressing the MENU button the first time brings up the
first menu level. The (MENU) button is used to enter
and exit the OSD menu.
1.5.6 OSD Function- Normal Mode
Table 1
LED Color
Power-ON Mode Green
Power Saving Mode Amber
Power Button To turn ON or OFF the Power.
Menu/Exit Button To enter or exit OSD Menu.
To move downward in the OSD Item.
Act as DDC enable and disable switching Hot-
Key when OSD is not display.
Choose the previous OSD Menu Item.
To decrease the value of the parameter in the
adjust bar, which has been selected for
adjustment.
Choose the next OSD Menu Item.
To increase the value of the parameter in the
adjust bar, which has been selected for
adjustment.
Act as Auto Adjustment Hot-Key when OSD is
not displayed.
Select Button
Left Button
Right Button
Icon Item Function Description
Brightness Adjust the background screen brightness by using backlight inverter.
Contrast Adjust the image contrast by controlling analog signal gain.
Color Temperature
Press ‘Right’ or ‘Left’ to select sRGB, Reddish, Bluish and User preset.
Only when selecting User, you can make adjustment to the R/G/B
content, otherwise not.
Horizontal Size
Adjust the horizontal Image Size. When the value is increased, the
width of display image wider, and when the value is decreased, the
width becomes narrows.
Fine To increase or decrease the snow noise of image. Adjust the delay of internal
clock to control the display focus.
Left/Right Adjust the horizontal Image Position.
Down/Up Adjust the Vertically Image Position
Auto Adjust
Press ‘Right Key’ to turn on this function. The Auto-Adjust will automatically
adjust H-Position, V-Position, H-Size and Fine to the optimal value, the whole
process takes about 3 seconds.
Language
Select a language of OSD Menu. User can select language from 11 Languages;
they are English, French, German, Spanish, Japanese, Simple Chinese,
Traditional Chinese, Korean, Portuguese and Russian, Turkish.
Factory Reset Reset all users setting to factory preset value except language selection.
OSD Timeout
Select OSD Menu turn off time. when “30 seconds” is selected,
OSD shall be turned off automatically after 30
Seconds from the last key operation.
OSD Left/Right
To move the OSD position horizontally on the screen. When the
‘Right’ Key is pressed, the OSD control menu to move to the
right side of sreen.Likewise, when the ‘Left’ key is pressed, the
OSD control menu to move to the left side of screen.
OSD Down/Up
To move the OSD position vertically on the sreen.when the ‘Right’ Key is
pressed, the OSD control menu to move to the up side of sreen.Likewise, when
the ‘Left’ key is pressed, the OSD control menu to move to the down side of
screen.
Information Indicates the current resolution.
1. Product Specification (continued)
4
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ACER AL1716W

1.5.8 OSD Control Factory Default Values: The OSD
controls shall have the following factory default
values:
A. Brightness=100(range 0 – 100)
B. Contrast=50(range 0 – 100)
C. Volume=90(range 0 – 100)
D. Color Temperature=Normal(sRGB)
E. Language= English
F. Horizontal OSD position=50(range 0 – 100)
G. Vertical OSD position=50(range 0 – 100)
H. OSD Timeout=30(range 5– 60)
I. Horizontal size: no default value
J. Fine: no default value
K. Left/Right: no default value
L. Down/up: no default value
1.6 Monitor Modes and Timing Capability:
1.6.1 Format and Timing
The monitor shall synchronize with any vertical
frequency from 56 to 76 Hz, and with any
horizontal frequency from 31 to 83 KHz. If the
input frequency is beyond the specified range, the
monitor shall display a warning screen indicating
that the input frequency is out of range. Under no
circumstances shall any combination of input
signals cause any damage to the monitor.
1.5.7 OSD Function (Abnormal Mode) 1.6.2 Factory Assigned Display Modes: There are 18
factory pre-set frequency video modes. These modes
have a factory pre-set for all characteristics affecting
front-of-screen performance. When the system is
powered-on, previously stored screen parameters for
a pre-defined mode will be recalled if the operating
mode is one of those stored in memory. If the
operating mode is not one of those stored in memory,
the monitor CPU will select the PRESET timing for a
mode that is the next lowest in horizontal scanning
frequency to the mode being currently used. The
screen parameters may be adjusted by the use of the
front bezel controls and then may be saved as a user
defined mode. The monitor shall include all the
preset video timings shown in the following page.
NOTE: (1) 76Hz<=FV: Monitor can display but does
not guarantee.
(2) FH>=85KHz, or Fv>=80Hz: Power Save
(OSD warning invalid mode).
1.6.3 Mode Recognition Pull-in:
The monitor shall recognize preset modes within a
range of +/- 1 KHz whichever is less for horizontal;
and within +/- 1Hz for vertical.
Preset Timing Chart
FH Pixel Rate
(KHz) (MHz) H V
1 102 VGA 720 x 400 70Hz 31.47 28.322 - +
2 103 VGA 640 x 480 60Hz 31.47 25.175 - -
3 182 MAC 640 x 480 67Hz 35 30.24 - -
4 173 VGA 640 x 480 72Hz 37.86 31.5 - -
5 109 VESA 640 x 480 75Hz 37.5 31.5 - -
6 104 VESA 800 x 600 56Hz 35.16 36 - -
7 116 VESA 800 x 600 60Hz 37.88 40 + +
8 117 VESA 800 x 600 72Hz 48.08 50 - -
9 110 VESA 800 x 600 75Hz 46.88 49.5 + +
10 108 MAC 832 x 624 75Hz 49.73 57.28 - -
11 118 VESA 1024 x 768 60Hz 48.36 65 - -
12 157 VESA 1024 x 768 70Hz 56.48 75 - -
13 141 VESA 1024 x 768 75Hz 60.02 78.75 + +
14 203 MAC 1152 x 870 75Hz 68.68 100 - -
15 339 1280 x 720 60Hz 44.772 74.5 - +
16 394 1280 x 800 75Hz 62.63 106.22 - -
17 290 WXGA 1440 x 900 75Hz 70.635 136.75 - +
18 289 WXGA 1440 x 900 60Hz 55.935 106.5 - +
No Chroma Timing Timing Modes, FV(Hz)
Sync Polarity
No VGA Signal Menu The function gives a warning when selected input signal is not
active. When the Monitor determines that the VGA is not input H/V
syncsignalastheOFF
¡B
suspend or standby model, or the V-sync
frequency is under 36.5Hz , the Monitor shall display a message,
No VGA Signal” for 3 seconds and the LED shall be green, to
alert the user that input signal is not active. After the message is
displayed about 3 seconds, the monitor shall go into sleep mode
and the LED shall be Amber. If the monitor is in Sleep mode,
pressing any OSD button shall cause the OSD message to be
displayed for another 3 seconds.
This function gives warning about input resolution or refresh rate
that the monitor cannot display. An input signal which is outside the
normal range of operation defined in Section 3.2 and the input sync
signal frequency for the below condition shall cause the monitor to
display for 3 seconds the Out of Range” message, and the LED
shall be green:
1. V-sync frequency : 36.5Hz<=Fv<=55
2. V-sync frequency : FV>=76Hz
3. H-sync frequency : FH>=83KHz
Check VGA cable Menu This function gives warning about the VGA cable not connection.
When the Monitor determines that the VGA is not connected, the
Monitor shall display a message, Check VGA Cable” for 3 seconds
andtheLEDshallbegreen, toalerttheuserthatthevideocableis
not be plugged into the CPU or a Monitor signal connector. The
monitor shall use a method of a pull-up resistor on a ground pin to
determine if the video cable is connected to the PC. If the monitor
is in Sleep mode, pressing any OSD button shall cause the OSD
message to be displayed for another 3 seconds.
Out of range Menu
1. Product Specification (continued)
Go to cover page
5
ACER AL1716W

1.7 Controller Requirements:
1.7.1 General Requirements: The monitor shall
include a controller capable of converting the
analog RGB signal from a standard WXGA
resolution video controller in the CPU to a signal
which can be displayed on the panel. The
controller will include a PLL, A/D converters,
and other circuitry necessary to perform its
function. The PLL shall be stable enough to
ensure that a static image from the CPU is
placed in the same physical location on the flat
panel in each frame.
1.7.2 Video Stretching: The monitor shall contain
provisions to “stretch” the video signal, so that
an input signal from the computer in any
resolution smaller than 1440 x 900 is
automatically expanded to fill the entire screen.
1.7.3 Panel Timing and Interface: The controller
supplied with the monitor shall control all
panel timing. This controller shall adequately
insulate the monitor from the computer, so that
no possible combination of input signals from the
computer shall cause damage to the flat panel or
any other component of the monitor. The LCD
panel interface shall support the TFT standard.
1.8 DC - AC Inverter Requirements:
The frequencies used by the DC-AC inverter used to
power the backlight shall be chosen so as to prevent
any noticeable effects on the flat panel (such as a
rolling effect).
1.9 Power Supply Requirements:
The AC to DC converter power supply for the monitor
shall be an integrated power supply. This power supply
shall have an IEC receptacle for mains power input and
provide sufficient power for the monitor, the backlight
assembly and the “Dell Sound bar”, and shall meet all
requirements specified in Table 2.
1.10 Display Communications Channel:
The monitor assembly shall provide a display
communications channel that conforms to VESA
DDC2B hardware requirements. This configuration
shall contain the 256-byte EDID file as specified by
VESA E-EDID Standard. The monitor contains a
separate EEProm for each video input to store EDID
information. Once the EDID is programmed there is a
write protection that is enabled so that the EEPROM
cannot be overwritten.
Table 2. AC TO DC Converter Requirements
Input Voltage Range The operating range shall be from 90 to 240 VAC
sinusoidal for all models specified.
Input Frequency Range Input power frequency range shall be from 47.5 to 63Hz
over the specified input voltage range.
Power Consumption
Power consumption for the monitor shall be less than
75W over the specified voltage and frequency ranges. In
power off mode the power consumption will be less than
1W (at 90VAC~240VAC).
Line Fuse
The AC input shall be fused and become electrically open
as a result on an unsafe current level. The fuse may not
be user replaceable.
Initial Cold Start
The power supply shall start and function properly when
under full load, with worst case conditions of input
voltage, input frequency, operating temperature, and cold
backlight lamps.
Inrush Current
The inrush current must be limited to 42A when operated
at 120VAC, and 80A when operated at 220VAC. In - rush
current is measured at an ambient temperature of 25° C,
with the unit temperature stabilized in the power - off
Hot Start Cycle
The power supply shall not be damaged when switched
ON for one second and OFF for one second for seven
consecutive times after operating for one hour at full load,
25°C, and nominal input line voltage.
Under Voltage
The power supply shall contain protection circuitry such
that the application of an input voltage below the
minimum specified in this table shall not cause damage
to the power supply unit nor cause failure of the input
Line Transient
The power supply shall operate within IEC 801-4 (±1KV)
and IEC 801 -5 (±2KV) for the domestic U.S. Version.
The UPS power supply shall operate and comply with CE
mark.
1. Product Specification (continued)
6
Go to cover page
ACER AL1716W

2.1 General Information
.
2.2 Panel Timings:
The controller included with the monitor shall translate
all video timings from the CPU that meet the timing
requirements listed in panel specification into timings
appropriate for the panel. Under no circumstances
may the controller supply the panel with timings that
may result in damage. The controller shall insulate the
panel from the CPU, so that the panel shall always be
driven per it's own specification regardless of the
timings being sent from the CPU.
2,3 Polarizer Hardness:
The outer face of the front polarizer panel shall be
covered with a coating with a 3H hardness value.
2.4 Backlight Requirements:
2.4.1 General Requirements: The backlight assembly
shall be designed to support field replacement at
the customer site or authorized service center.
The lamps shall have a continuous operating life
of at least 30,000hrs at 25 degree C. The
operating life is defined as having ended when
the illumination of light has reached 50% of the
initial value. The lamps shall extend a sufficient
amount from the edge of the light guide that
sputtering over the life of the lamps shall not
cause degradation of the luminance uniformity
(such as non-illuminated bands along the edges
of the display).
2.4.2 Lamps Startup Time: The backlight lamps shal
start within 3sec. of the time the monitor power
switch is pressed or the monitor is restarted from
a power - down mode .The starting time shall stay
below 3 sec. for the minimum expected life of the
lamps. Test conditions are as follows:
Ambient Light ----------------------< 1.0 lux.
Temperature------------------------10degreeC
Inactive Time -----------------------> 24 hours
HannStar, HSD170MGW1-A00 which display model
is a color active matrix thin film transistor (TFT) liquid
crystal display (LCD) that uses amorphous silicon TFT
as a switching device. This model is composed of a
TFT LCD panel, a driving circuit and a back light
system. This TFT LCD has a 17.0 inch diagonally
measured active display area with XGA resolution (900
vertical by 1440 horizontal pixel array) and can display
up to 262,144 colors.
2.5 Defects:
.5.1 Visual Inspection: The LCD panel shall be
inspected with all pixels set to white, black, red,
green, and blue. The color variation, brightness
variation, and overall appearance must not be
perceived as poor quality by Lite - On. Areas and
/or parameters considered questionable shall be
subjected to detailed measurements.
.5.2 Display Degradation: Over the life of the product,
variation of the parameters specified in panel
specification shall be maintained within
reasonable limits. The panel must not exhibit any
significant defects while in operation (excluding
the CCFL operation). This does not in any way c
change the warranty given by the panel vender.
.5.3 Light Leakage: Except for the active display area,
there shall be no light emission visible from any
angle from any other part of the display. For this
test, the ambient illumination will follow the panel
specification 300 to 700 lux.
.5.4 Allowable Defects: No cosmetic defects are
allowed except those specified below. The
conditions of visual inspections are as follows:
- Viewing distance is to be approximately 35~50
cm.
- Ambient illumination is to be 300 to 700 lux.
- Viewing angle range shall be 160 degrees
Horizontal and 160 degrees vertical typically.
- Defects not apparent within one minute shall be
ignored.
2
2
2
2
2.5.5 Defect Terminology: Table 3 gives the descriptive
terms used in classifying defects.
Dark Spots/Lines
Spots or lines that appear dark in the display patterns and are usually the
result of contamination. Defects do not vary in size or intensity (contrast)
when contrast voltage is varied. Contrast variation can be achieved
through the use of varying gray shade patterns.
Bright Spots/Lines
Spots or lines that appear light in the display patterns. Defects do not vary in
size or intensity (contrast) when contrast voltage is varied. Contrast variation
canbeachievedthroughtheuseofvaryinggrayshadepatterns.
Polarizer Scratch
When the unit lights, lines appear light (white) with display patterns dark and
do not vary in size. Physical damage to the polarizer does not damage the
glass.
Polarizer Dent
When the unit lights, spots appear light (white) with display patterns dark
and do not vary in size. Physical damage to the polarizer that does not
damage the glass.
Rubbing Line
Horizontal or diagonal lines that appear gray with the display patterns dark
and may have resulted from an 'out of control' rubbing process on the
polyimide or 'waves'“ on the BEFs or prism sheets .
Newton Ring The 'rainbow' effect caused by non-uniform cell thickness.
Mottling When the unit lights, variation / non – uniformity (splotchiness) appears light
(white) with the display and might vary in size.
Dim Line When the unit lights, line(s) in the minor (vertical) or major (horizontal) axis
appear dim, but not completely on or off.
Cross Lines Off When the unit lights , lines in both the minor and major axis do not appear.
Bright/Dark Dot A sub - pixel (R, G, B dot) stuck off / on (electrical).
2. Flat Panel Specification 7
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ACER AL1716W

2.5.6 Smudges, Streaks and Smears: When viewing
the panel oriented so as to max. reflected light,
there shall be no visible smudging, streaking,
smearing or other non-uniformity from
contaminants, fingerprints, or defects in any of
the visible surfaces. This is independent of
whether the unit is operating or off.
2.5.7 LCD Inspection: Put LCD panel on inspection
table and illuminate the panel with a daylight
fluorescent lamp located above the panel
surface such that the luminance at the LCD panel
is between 1000 lux. and 1500 lux. Defect limits
are given in Table 4.
Allowable distance between spots of two sizes is
the minimum separation number for the smaller
spot. Therefore, if there are two spots including
1.30mm and 0.4mm in diameter, they must be at
least 15mm apart.
2.6 Optical Characteristics:
2.6.1 Brightness uniformity: The uniformity is
determined by using a photometer (CA-210) to
measure the 9 points luminance in front of
monitor after at least 30 minutes warm up. It shall
be test at 1440x900/60Hz mode and full white
square pattern with contrast / brightness in
default value. The values specified are at an
approximate distance 20 cm from the LCD
surface and at 0 viewing angle. The 9 test points
are defined as below.
The brightness uniformity is calculated as below:
Brightness uniformity 0
Remark: The black luminance non-uniformity are
no defined by panel spec, therefore, we don't
define the specification for black luminance
non-uniformity.
2.6.2 Contrast ratio (CR): The contrast ratio is determined
by using a photometer (CA-210) to measure the
maximum and minimum luminance in front of monitor
after at least 30 minutes warm up. It shall be test at
1440x900, 60Hz mode and full white and full black
square pattern with contrast and brightness in
default value whcih specified are at an approximate
distance 20cm from the LCD surface and at 0 viewing
angle. The contrast ratio is calculated as below.
CR=(Max. full white luminance)/(Max. full black
luminance)
CR = 500: 1(ty)
2.6.3 Response time: The response time is defined as
below.
≧％7
Tr + Tf : 8 msec typ.
Remark: optical response time vs gray scale, test
condition for brightness set to max. and contrast set
to default.
2.6.4 Viewing angles: The viewing angles are measured at
CR>10 as below.
Horizontal Left: 70 degrees typ. (HSD170MGW1-A);
Right: 70 degrees typ. (HSD170MGW1-A);
Vertical Up:65 degrees typ. (HSD170MGW1-A);
Down:65 degrees typ. (HSD170MGW1-A);
Table 4. Descriptive Terms
Average Diameter
Smaller of (L+W)/2 or L/20 + 2W
< 0.1mm Non countable N / A
0.1mm - 0.3mm 10 15mm
0.31mm - 0.5mm 10 15mm
0.51mm - 1.25mm 5 15mm
1.26mm - 2.5mm 3 25.4mm
2.51mm - 0.3mm 3 25.4mm
Greater than 3.75mm None Not applicable
Acceptable Number Minimum Separation
2. Flat Panel Specification (continued)
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8
ACER AL1716W

2.6.5 Chromaticity: The color chromaticity is measured by
a photometer (CA-210) at 1440x900/60Hz mode and
full white square pattern with contrast/brightness in
default value. The x and y co-ordinates for sRGB,
Reddish, Bluish and User preset mode shall be as
below:
2.6.6 Brightness: The uniformity is determined by using a
photometer (CA-210) to measure luminance on the
center of screen after at least 30 minutes warm up. It
shall be test at 1440x900/60Hz mode and the
brightness and contrast OSD setting for 100%. The
values specified are at an approximate distance
20cm from the LCD surface and at 0 viewing angle.
The full screen white center luminance at user mode
color temperature shall be 250 cd/m typ. and
200cd/m2 minimum (HSD170MGW1-A), and full
screen black luminance center max. luminance <1
cd/m2.
2.6.7 Environmental Requirements:
A. Temperature Ranges:
- Operating Temperature (guaranteed functional
performance): 0~50 degreeC
- Operating Temperature (guaranteed optical
performance): 5~ 35 degreeC
- Shipping Temperature: -20oC to 60oC
- Storage Temperature: -20oC to 60oC
B. Humidity:
- Operating (non-condensing): 10% to 80%
- Shipping (non-condensing): 10% to 90%
- Storage (non-condensing): 10% to 90%
2.6.8 Shipping and Packing: Packaging and wrapping shall
be sufficient to protect the product against damage or
loss during shipment from the supplier to the
destination specified in the purchase order. All
packaging materials are subject to test and
evaluation. The container loading is 2160sets/40'.
The outside dimension of carton box is 482(L)x
127(W) x 423(H) mm.
2.7 Panel General Information
2.7.1 Mechanical Information
2.7.2 Electrical Absolute Rating
TFT LCD Module
Backlight Unit
Note (1)Permanent damage may occur to the LCD
module if beyond this specification.
Functional operation should be restricted to
the conditions described under normal
operating conditions.
(2) Ta =25 degree C
2.7.3 Optical Specification
Sy mbol Condition Mi n. Typ. Max. Unit Note
CR 400 500 - (1)(2)
Response time Rising TR - 3 5 (1)(3)
Falling TF - 5 7
YL 200 250 - cd/m*2 (1)(4)(5) (IL=8.0mA)
YL (180) (230) - cd/m *2 (IL=7.5mA)
Rx 0.595 0.625 0.655
Ry 0.315 0.345 0.375
Gx 0.295 0.325 0.355
Gy 0.525 0.555 0.585
Bx 0.125 0.155 0. 185
By 0.115 0.145 0. 175
Wx 0.280 0.310 0. 340
Wy 0.300 0.330 0. 360
ΘL 65 70 -
ΘR 65 70 -
ΘU 60 65 -
ΘD 60 65 -
ΘL 75 80 -
ΘR 75 80 -
ΘU 75 80 -
ΘD 75 80 -
BUNI Θ =0 70 75 - % (6)
Brightness uniformity
msec
(1)(4)
Viewing angle
Viewing angle
Θ =0 view angle
CR>10
CR>5
Hor
Ver
Hor
Ver
Item
Contrast
Whi te luminance (Center)
Color chromaticity (CIE1931)
Red
Green
Blue
Whi t e
Item Symbol Min. Max. Unit Note
Lamp current IL 3 9.0 mA (1) (2)
Lamp frequency fL 30 80 KHz (1) (2)
Min. Typ. Max. Unit
Horizontal (H) 388.7 389.2 389.7 mm
Vertical (V) 254.0 254.5 255.0 mm
Depth (D) 11.2 11.5 11.8 mm
- 1370 1500 g
- - 3.0 Kgf•Cm
Module Size
Item
Weight (Without inverter)
Torque of customer screw hole
Specification Unit
389.2x254.5x11.5 (Typ) mm
367.2 (H) x 229.5 (V) mm
1440 (H) x 900 (V) pixels
0.255 (H) x 0.255 (V) mm
RGB Vertical Stripe
6 bits/262,144 colors
Normally white
Antiglare (3H)
1370 g
2-CCFLs, Top&Bottom edge side
2-ch LVDS
Logic System 2.4 W
B/L System 9.8 W
Backlight
Input Signal
Item
Power Consumption
Outline Dimension
Display Area
Number of Pixel
Pixel Pitch
Pixel Arrangement
Display Color
Display Mode
Surface Treatment
Weight
Item Symbol Min. Max. Unit Note
Power supply voltage VDD -0.3 6.0 V (1) (2)
Logic input voltage VIN -0.3 VDD+0.3 V (1) (2)
2. Flat Panel Specification (continued)
9
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ACER AL1716W

2.7.4 Block Diagram
TFT LCD Module
Backlight Unit
2.7.5 Pixel Format
2.7.6 Interface Pin Connection
Backlight Unit
TFT LCD Module
Note (1) Please connects NC pin to nothing. Don’t
connect it to ground nor to other signal input.
(NC pin should be open.)
Note (2) The module used a100ohm resistor between
positive and negative data lines of each
receiver input.
2.7.7 Electrical Characteristics
TFT LCD Module
Note (1) White and V-color
Mosaic: Dot checker image
Symbol Min. Typ. Max. Unit Note
VDD 4.5 5.0 5.5 V
White IDD0 260 360 460 mA (1)
V-Color IDD1 370 470 570 mA (1)
Mosaic IDD2 515 615 715 mA (1)
fV 56 60 75 Hz ref 6.5 t1
fH 55.469 55.935 70.635KHz ref 6.5 t4
fDCLK 44.375 53.25 68.375MHz ref 6.5 t7
IRush - - 1.5 A (2)
Hsync frequency
Frequency
Input rush current
Item
Current of power supply
Voltage of power supply
Vsync frequency
Terminal no. Symbol Function Note
1 GND Ground
2 VDD Power Supply : +5.0V
3 VDD Power Supply : +5.0V
4 NC Reserved for supplier test point
5 NC Reserved for supplier test point
6 NC Reserved for supplier test point
7 NC Reserved for supplier test point
8 Odd_Rin0- - LVDS differential data input (R0-R5, G0) (2)
9 Odd_Rin0+ + LVDS differential data input (R0-R5, G0) (2)
10 GND Ground
11 Odd_Rin1- - LVDS differential data input (G1-G5, B0-B1) (2)
12 Odd_Rin1+ + LVDS differential data input (G1-G5, B0-B1) (2)
13 GND Ground
14 Odd_Rin2- - LVDS differential data input (B2-B5,NC,NC,DE) (2)
15 Odd_Rin2+ + LVDS differential data input (B2-B5,NC,NC,DE) (2)
16 GND Ground
17 Odd_ClkIN- - LVDS differential clock input (2)
18 Odd_ClkIN+ + LVDS differential clock input (2)
19 GND Ground
20 Even_Rin0- - LVDS differential data input (R0-R5, G0)
21 Even_Rin0+ + LVDS differential data input (R0-R5, G0)
22 GND Ground
23 Even_Rin1- - LVDS differential data input (G1-G5, B0-B1)
24 Even_Rin1+ + LVDS differential data input (G1-G5, B0-B1)
25 GND Ground
26 Even_Rin2- - LVDS differential data input (B2-B5,NC,NC,DE)
27 Even_Rin2+ + LVDS differential data input (B2-B5, NC, NC, DE)
28 GND Ground
29 Even_ClkIN- - LVDS differential clock input
30 Even_ClkIN+ + LVDS differential clock input
Terminal No. Symbol Function
1 VL CCFL power supply (high voltage)
2 NC No connection
3 GL CCFL power supply (low voltage)
Connector CN1
TCON with
LVDS Receiver
DC/DC
Converter
Gamma
Reference
Voltage
Generator
Y-driver IC
X-driver IC
Liquid Crystal
Panel 1440x900
pixels
2. Flat Panel Specification (continued)
10
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ACER AL1716W

Note (2) Input Rush Current measurement condition
2.8 Back-Light Unit
The back- light system is an edge-lighting type with 2
CCFL. The characteristic of the lamp is shown in the
following tables.
Note (1) Lamp current is measured with current meter
for high frequency as shown below. Specified
valued are for single lamp.
Note (2) Lamp frequency may produce interference
with horizontal synchronous frequency and
this may cause ripple noise on the display.
Therefore lamp frequency shall be kept away
from the horizontal synchronous frequency
and its harmonics as far as possible in order
to avoid interference. *Suggest the inverter
frequency avoid fL=51~59KHz
Note (3) Lamp life time (Hr) can be defined as the time
in which it continues to operate under the
condition: Ta=25 3 oC, typical IL value
indicated in the above table and fL=52kHz
until the brightness becomes less than 50%.
Note (4) CCFL inverter should be able to provide a
voltage over specified value (Vs) in the above
table. Lamp units need at least Vs value
shown above to ignition.
Note (5) The voltage over specified value (Vs) should
be applied to the lamp more than 1 second
after startup. Otherwise, the lamp may not be
turned on. The used lamp current is the lamp
typical current.
Note (6) The output voltage waveform and current
waveform of the inverter must be symmetrical
(Unsymmetrical ratio is less than 10%).
Please do not use the inverter which has
unsymmetrical voltage and current waveform,
and spike waveform. The inverter design
which can provide the best optical
performance, power efficiency, and lamp life
should under the following conditions.
a. The asymmetry rate of the inverter
waveform should be less than 10%.
b. The distortion tae of the waveform should
be within
c. The inverter output waveform should be
better similar to the ideal sine wave.
2.9 Switching Characteristics for LVDS Receiver
Item Symbol Min. Typ. Max. Unit Note
Lamp current IL 3.0 8.0 9.0 mA(rms) (1)(6)
Lamp voltage VL - 610 - V(rms) (6) IL=8.0mA
Frequency fL 30 - 80 KHz (2)
Hr 30,000 - - Hour (3) IL=8.0mA
Hr 40,000 - - Hour (3) IL=7.5mA
1200 - - (4)(5) at 25oC
1400 - - (4)(5) at 0oC
Startup voltage Vs V(rms)
Operating lamp life time
2. Flat Panel Specification (continued) 11
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ACER AL1716W

3.1 Packing Exploded Diagram
3. Exploded Diagram
12
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ACER AL1716W

3.2 Product Exploded Diagram
3. Exploded Diagram (continued)
1
14
7
6
8
5
18
17
10
9
15
16
3
2
4
11
19
12
13
13
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ACER AL1716W

4.1 Power board
Check output
voltage +5V and +22V whether if
correct supply
It is not power board problem.
Check power switch whether if turn on
OK
NG
Turn switch on.NG
Check power cord
P801, signal cable P302, P103, P104
is correct connected
Connect the cables whether to be correct connected.NG
OK
Check C805 value is about
140Vdc -330Vdc
OK
Check F801, T801, R802, D801 whether to be damaged.NG
Check C807 is greater than 11V Check R807, D804, I801 whether to be damaged.
OK
NG
Check I801 pin6 has same pulse Check peripheral component of I801 whether to be damaged.NG
OK
Check T802 PIN1 has same pulse or
not Check Q803, R813, R814, D806 whether to be damaged
OK
NG
Check peak voltage of R811 triangle
pulse is up to 0.52V or not
OK
Check D804 and R807 whether to be damaged
Check D809, D810,
C818, C824, C823, C817, C822, T802
have same short circuit or the output
+5V/+22V is over load
Check D809, D810, C818, C824, C823, C822, T802 whether to
be damaged.
Check feedback circuit around I802, I803 and
the other components and repair them
OK
OK
NG
NG
4. Troubleshooting
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14
ACER AL1716W

4.2 Inverter circuit on power board
Check C106 pin is
greater than 0.55V Brightness pin is
an external PWM.
It is not inverter board problem.
Check pin2 of I101 is 5V
OK
NG
Check R105, ZD101, or C102 whether to
be damaged. And, printed wire between
them is opened.
NG
Check if
P103 and P104 are connected
correctly.
Check CCFL and repair them. Reconnect
P103 and P104 in tightly.
NG
OK
OK
Check pin5 of I101, there’s around
1.25V from output detection.
Check D121, D120, R130, C128, C111
and repair them if be damaged.
NG
Check SW MCS Q105 whether to
work properly.
OK
Repair Q105
Check the prepherial components and repair
them
OK
NG
4. Troubleshooting (continued) 15
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ACER AL1716W

4.3 No display of screen Screen is black color of LED is amber.(, )
Does OSM display when you press
‘MENU’ button? Proceed to ‘No OSM display’ section
Check if the sync signal
from computer is output and if the
video cable is connected normally.
NG
YES
Input the sync signal of computer or
change the cable
NG
Proceed to ’Checking the resolution
change IC movement’ section
OK
When a signal is not being input, it indicates with
‘VIDEO INPUT’. It indicates with ‘Out of Range’ at the
time of the frequency that it cannot distinguished.
4. Troubleshooting (continued)
Go to cover page
16
ACER AL1716W

4.4 Nothing display on screen (screen is black, color of LED is blue)
Is backlight lit? Proceed to ‘Checking the backlight unit’ section.
Does computer output RGB video
signals?
NG
OK
1. Change pattern of video signal output on the host
computer.
2. Reconnect the video cable.
3. Change the video cable.
NG
OK
Check the video cable for failure. Check the host for
output signal with all black only.
Check OSD
menu to display on the screen when
you press ‘MENU’ key.
NG
Check if the
LCD module signal cable
is connected between the
Interface Board and LCD
Module.
Proceed ‘Abnormal screen detection’ section
OK
The LVDS cable is disconnected.
NG
Check the 3V3 power
supplied to I306
OK
Check if the
voltage on I309 pin8 that is
power DC at 5V
NG
I309 may be damaged.
NG
OK
OK
Failure Point: I306 is defected.
Check the 1V8 power are
supplied on I306
NG
OK
Failure Point:
Check if the voltage on I306
pin1 that is power DC 3V3
Failure Point:
1. Printed wire broke between
I307 pin3 and I306 pin1
2. L336 is open
NG
Failure Point:
I306 is failure
OK
Check the 5V
power is supplied on P306
pin28, pin29, pin3 to the
LCD panel
Check the P306 all
LVDS signals
Failure Point:
1. The LVDS cable beoke
between P306 and LCD module.
2. LCD module is failure.
Failure Point:
1. Printed wire broke between
P306 and I306 LVDS signals.
2. I306 is defected.
NG
OK
OK
Check if the voltage
on I301 pin3 that is DC
power at 5V
NG
Failure Point:
1. I301 is open.
2. Printed wire is broken
between P306 pin28, pin29
and FB303.
NG
OK
Check if the TTL
level on Q302 pin2 and TTL
level is low
NG
Failure Point:
Q302 is failure
Check the PANEL
ENABLE signal of the
rectangle input Q302 pin2 at
TTL high level.
NG
Failure Point:
Q302 is failure
Failure Point:
1. Printed wire broke between Q302 pin2,
I306 pin127.
2. I303 is failure
OK
OK
4. Troubleshooting (continued) 17
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ACER AL1716W

4.5 Abnormal screen for VGA source
Check the R.G.B video signals from
computer input on P302 of video connector
Failure Point:
1. No R.G.B video signals output from host computer. Check the computer.
2. VGA video signal cable disconnected
Check VGA R.G.B input
video signals on I306 pin99, pin96, pin93
respectively that their level is
0.5Vp-p to 0.7Vp-p
NG
OK
Failure Point:
In the case of the RED signal. (Green and Blue signals are the same path, too.)
1. Video cable is failure.
2. l306 is damaged.
3. FB305, FB307, FB309, FB308, FB306, FB310,
R310~R318, C317~C320, C324,C325 is Open
4. R313, R314, R315 is short.
NG
OK
Check all LVDS signals being
output to P306 from I306? NG
Proceed ‘Checking the resolution changed IC
movement’ section
OK
Failure Point:
Printed wire is open between I306 and P306.
4. Troubleshooting (continued)
Go to cover page
18
ACER AL1716W

4.6 Abnormal OSM display adjust problem
Check the input TTL level whether to
change when press the function keys on the P307
pin3, pin4 (normal is high level when to press button,
the level will be changed.)
Failure Point:
1. Function key wire is disconnected.
2. Function key wire is defected.
3. Function key board is defected.
Check the input TTL level whether to
change when press the function keys on I306 pin114
and pin115.
NG
OK
Failure Point:
1. Printed wire broken between P307 pin2 and I306 pin114.
2. Printed wire broken between P307 pin3 and I306 pin115.
3. R368 C382 R369 C383 C387,C388,C391 or
C392 is short.
4. R380,R383,R378 or R379 is open.
NG
Failure Point:
I306 is failure
OK
4. Troubleshooting (continued) 19
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ACER AL1716W