ACER AL1716w Service Manual

ACER

ACER_LCD_AL1716W_SM070510V1

Service

Model ID: T17ANHW-G1

Service Manual

Table of Contents

Important Safety Notice------------------------------------------------------------------------------------- 01

01. Product Specification--------------------------------------------------------------------------------- 02

02. Flat Panel Specification-------------------------------------------------------------------------------07

03. Exploded Diagram

04.

Troubleshooting----------------------------------------------------------------------------------------14

05. Spare Parts List-----------------------------------------------------------------------------------------23

06. Schematics and Layouts------------------------------------------------------------------------------ 31

07. Assembly and Disassembly-------------------------------------------------------------------------- 41

Appendix : User’s Manual

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

------------------------------------------------------------------------------------- 12

Safety Notice

containing high voltage.

Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification

10th-May-2007

Product Anouncement:

Important Safety Notice

ACER AL1716W

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1

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

Using Lead-Free solder to well mounted the parts.!

! The fusion point of Lead-Free solder requested in the

degree of 220 C.°

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.

2

ACER AL1716W

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1. Product Specification

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

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/m

2

typ.
Response Time (Ton + Toff) 8 ms typ.
Pixel Pitch 0.255mm x 0.255mm RGB Vertical Stripes
Vertical Viewing

130 degrees typ,
CR>10

Horizontal Viewing

140 degrees typ,
CR>10

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.

Function Key Board

Regulator
5V ~ 3 .3V
5V ~ 1.8V

LCD Panel

5V

+5V Vcc

Scaler IC

GM5726H

R.G.B & Hs,Vs

D-SUB

Analog Video

LVDS

Input

DIM & Enable

EEPROM

24C02

SST25VF01

XTAL

14.318MHz

Inverter Output

+5V & DIM & Enable

EEPROM

24CL16

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.

Power & Inverter

AC 110/220V

Input

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.

ITEM

Frequency Ranges

Analog Signal I nput

Connectors

Power Consumption

User’s Control Front Panel Buttons POWER, MENU, SELECT, + , ­Dimming control range
(max-min/max) x 100%
Pre-Defined Timing
Plug and Play
Power Saving
Input Signal Counter tolerance

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

Input connectors D-SUB 15 pin
AC IN 90~264V

Normal Operation

Standby, Suspend,
Active Of f
Power Off < 1W @ (90VAC~240VAC)

H 31kHz ~ 83kHz
V 56Hz ~ 76Hz

AC 100V ~ AC 220V ± 10% 50/60Hz, 3 pin
AC power cord

35W Max

<2W

35% typical

18
VESA DDC2B
DPMS
H ±1kHz, V ±1 Hz

SPEC

1. Product Specification (continued)

ACER AL1716W

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3

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 ,

subminiature

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:

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

1GND
2GND
3GND

45.2V

55.2V

65.2V

75.2V
8 BKLT-EN
9 BKLT-ADJ

Flat Panel Connect or

Terminal

Signal

Symbol Functi on Note

no.

1 GND Ground
2 VDD Power supply: +0.5V
3 VDD Power supply: +0.5V
4 NC Reserved for supplier test poi nt
5 NC Reserved for supplier test poi nt
6 NC Reserved for supplier test poi nt
7 NC Reserved for supplier test poi nt
8 Odd_Rin0- - LVDS di fferent ial dat a input (R0-R5, G0) (2)

9 Odd_Rin0+ + LVDS diff erential data input (R0-R5, G0) (2)
10 GND Ground
11 Odd_Rin1- - LVDS di fferenti al dat a input (G1-G5, B0-B1) ( 2)
12 Odd_Rin1+ + LVDS diff erential data input (G1-G5, B0-B1) ( 2)
13 GND Ground
14 Odd_Rin2- - LVDS di fferenti al dat a input (B2-B5, NC, NC, DE) ( 2)
15 Odd_Rin2+ + LVDS diff erential data input (B2-B5, NC, NC, DE) (2)
16 GND Ground
17 Odd_ClkIN- - LVDS di fferenti al cl ock input (2)
18 Odd_ClkIN+ + LVDS dif ferenti al cloc k input (2)
19 GND Ground
20 Even_Rin0- - LVDS di fferenti al dat a input (R0-R5, G0)
21 Even_Rin0+ + LVDS dif ferenti al data input (R0-R5, G0)
22 GND Ground
23 Even_Rin1- - LVDS di fferenti al dat a input (G1-G5, B0-B1)
24 Even_Rin1+ + LVDS dif ferenti al data input (G1-G5, B0-B1)
25 GND Ground
26 Even_Rin2- - LVDS di fferenti al dat a input (B2-B5, NC, NC, DE)
27 Even_Rin2+ + LVDS dif ferenti al data input (B2-B5, NC, NC, DE)
28 GND Ground
29 Even_ClkIN- - LVDS di fferenti al cl ock input
30 Even_ClkIN+ + LVDS di fferent ial cl ock input

1.4 Input Signals (Analog RGB Signal Input):

No. Symbol It em Min Normal Max Unit Remark
1 Fh Horizontal Frequency 31 83 kHz Minimum range
2 Fv Verti cal Frequency 56 76 Hz Minimum range
3 Fclk Locked Pixel Clock Frequency 135 MHz
4 Vih Hi Level I nput 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 t o Ground

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) TTLsignal 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.

4

ACER AL1716W

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1. Product Specification (continued)

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.

Table 1

LED Color
Power-ON Mode Green
Power Saving Mode Amber

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.

Power Button To turn ON or OFF the Power.

Menu/Exit Button To enter or exit OSD Menu.

Select Button

Left Button

Right Button

To move downward in the OSD Item.

Act as DDC enable and disable switching Hot­Key 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.

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

Icon Item Function Descri ption

Brightness Adjust the background screen bri ghtness by using backlight inverter.

Contrast Adjust the i mage cont rast by controlli ng analog signal gain.

Color Temperature

Horizontal Size

Fine

Left/Right Adjust the horizontal Image Position.

Down/Up Adjust the Vertically Image Position

Auto Adjus t

Language

Factory Reset Reset all user s setting to factor y preset value except language s election.

OSD Timeout

OSD Left/Right

OSD Down/ Up

Information Indicates t he current resolution.

Press ‘Right’ or ‘Left’ to select s RGB, Reddish, Bluish and User preset.
Only when selecti ng User, you can make adjustment to the R/G/ B
content, ot herwise not.
Adjust the horizontal I mage Size. When the value i s increased, the
width of di splay image wider, and when the v alue is decreased, the
width becomes narrows.

To increase or dec rease the snow noise of image. Adj ust the delay of inter nal
clock to cont rol the display focus.

Press ‘Right Key’ to turn on thi s function. The Auto-Adjust will automatical ly
adjust H-Positi on, V-Position, H-Size and Fi ne to the optimal value, the whole
process takes about 3 seconds.

Select a language of OSD Menu. User can select l anguage from 11 Languages;
they are English, French, German, Spanish, J apanese, Simple Chinese,
Traditional Chi nese, Korean, Portuguese and Russian, Tur kish.

Select OSD Menu turn off time. when “30 seconds” is selected,
OSD shall be turned off automatically aft er 30
Seconds from the last key operation.

To move the OSD position horizontall y 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 pr essed, the
OSD control menu to move to the left side of screen.

To move the OSD positi on vertically on the s reen.when the ‘Right’ Key is
pressed, the OSD contr ol menu to move to the up si de of sreen.Likewise, when
the ‘Left’ keyi spressed, the OSDcontrol menu to move to the downside of
screen.

1. Product Specification (continued)

ACER AL1716W

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1.5.7 OSD Function (Abnormal Mode) 1.6.2 Factory Assigned Display Modes: There are 18

No VGA Signal Menu The function gives a warning when select ed input signal is not

Out of range Menu

Check VGA cable Menu This function gives warning about the VGA cable not connection.

active. When the Monitor determines that the VGA is not input H/V
syncsignalastheOFF¡Bsuspend 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 t hat input signal is not active. After the message is
displayed about 3 seconds, the monitor shall go i nto sleep mode
and the LED shall be Amber. If the monitor is in Sleep mode,
pressing any OSD button shal l cause the OSD message to be
displayed for another 3 seconds.

This function gives warning about input resolut ion or refresh rate
that the monitor cannot display. An input signal which is outside the
normal range of operati on 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 f requency : 36.5Hz<=Fv<=55

2. V-sync frequency : F

3. H-sync frequency : F

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 t o the PC. If the monitor
is in Sleep mode, pr essing any OSD button shall cause the OSD
message to be displayed for another 3 seconds.

>=76Hz

V

>=83KHz

H

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.

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.

Preset Timing Chart

No Chroma Timing Timing Modes, FV(Hz)

1 102

2 103

3 182

4 173

5 109

6 104

7 116

8 117

9 110

10 108

11 118

12 157

13 141

14 203

15 339 1280 x 720 60Hz 44.772 74.5 - +

16 394 1280 x 800 75Hz 62.63 106.22 - -

17 290

18 289

VGA

720 x 400 70Hz 31.47 28.322 - +

VGA

640 x 480 60Hz 31.47 25.175 - -

MAC

640 x 480 67Hz 35 30.24 - -

VGA

640 x 480 72Hz 37.86 31.5 - -

VESA

640 x 480 75Hz 37.5 31.5 - -

VESA

800 x 600 56Hz 35.16 36 - -

VESA

800 x 600 60Hz 37.88 40 + +

VESA

800 x 600 72Hz 48.08 50 - -

VESA

800 x 600 75Hz 46.88 49.5 + +

MAC

832 x 624 75Hz 49.73 57.28 - -

VESA

1024 x 768 60Hz 48.36 65 - -

VESA

1024 x 768 70Hz 56.48 75 - -

VESA

1024 x 768 75Hz 60.02 78.75 + +

MAC

1152 x 870 75Hz 68.68 100 - -

WXGA

1440 x 900 75Hz 70.635 136.75 - +

WXGA

1440 x 900 60Hz 55.935 106.5 - +

FH Pixel Rate

(KHz) (MHz) H V

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.

5

Sync Polarity

6

ACER AL1716W

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1. Product Specification (continued)

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.

Table 2. AC TO DC Converter Requirements

Input Voltage Range

Input Frequency Range

Power Consumption

Line Fuse

Initial Cold Start

Inrush Current

Hot Start Cycle

Under Voltage

Line Transient

The operating range shall be from 90 to 240 VAC
sinusoidal for all models specified.

Input power frequency range shall be from 47.5 to 63Hz
over the specified input voltage range.

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).

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.

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.

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

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.

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

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.

1.10 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.

2. Flat Panel Specification

ACER AL1716W

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7

2.1 General Information

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.

.

2.2 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

2.5 Defects:

2

.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.

2

.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.

2

.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.

2

.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.

2.5.5 Defect Terminology: Table 3 gives the descriptive

terms used in classifying defects.

Spots or lines t hat appear dark in the display patterns and are usual ly the

Dark Spots/ Lines

Bright Spots/Lines

Polarizer Scratch

Polar izer Dent

Rubbing Line

Newton Ring The 'r ainbow' effect caused by non- uniform cell thickness.

Mottling

Dim L ine

Cross Lines Off When the unit li ghts , li nes in both the minor and major axi s do not appear.

Bright/ Dark Dot A sub - pixel ( R, G, B dot) stuck of f / on ( electrical ).

result of contamination. Defects do not vary in si ze or intensity (contrast )
when contrast voltage is vari ed. Contrast variati on can be achieved
throughthe use of varying gray shade patterns.

Spots or lines t hat appear l ight in t he display patt erns. Defects do not v ary in
size or intensi ty (contrast ) when contrast voltage is vari ed. Contrast variati on
canbeachievedthroughtheuseofvaryinggrayshadepatterns.

When the unit li ghts, lines appear li ght (white) with displ ay patterns dar k and
do not v ary in size. Physical damage to t he polarizer does not damage t he
glass.
When the unit li ghts, spots appear light (white) with di splay patterns dark
and do not vary in size. Physical damage to t he polarizer that does not
damage the gl ass.
Horizontal or di agonal lines that appear gray with the displ ay patt erns dark
and may have r esulted from an 'out of control ' rubbing process on t he
polyimide or 'waves' “ on the BEFs or prism s heets .

When the unit li ghts, variat ion / non – uniformit y (splotchi ness) appears li ght
(white) with the display and might var y in size.
When the unit lights, line(s) in theminor (vertical) or major (horizontal) axis
appear dim, but not completely on or of f.

8

ACER AL1716W

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2. Flat Panel Specification (continued)

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.

Table 4. Descriptive Terms

Average Di amet er

Smaller of ( L+W)/2 or L/20 + 2W

< 0. 1mm Non count able 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 appl icabl e

Acceptabl e Number Mini mum Separat ion

Brightness uniformity 0

≧％7

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.

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.

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.

The brightness uniformity is calculated 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);

2. Flat Panel Specification (continued)

ACER AL1716W

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9

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

Outline Dimension

Item

Display Area
Number of Pixel
Pixel Pitch
Pixel Arrangement
Display Color
Display Mode
Surface Treatment
Weight
Backlight
Input Signal

Power Consumption

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

Specification Unit

2.7.1 Mechanical Information

Item

Horizontal (H) 388.7 389.2 389.7 mm

Module Size

Weight (Without inverter)
Torque of customer screw hole

Vertical (V) 254.0 254.5 255.0 mm
Depth (D) 11.2 11.5 11.8 mm

Min. Typ. Max. Unit

- 1370 1500 g

- - 3.0 Kgf•Cm

2.7.2 Electrical Absolute Rating

TFT LCD Module

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)

Backlight Unit

Item Symbol Min. Max. Unit Note
Lamp current IL 3 9.0 mA (1) (2)
Lamp frequency fL 30 80 KHz (1) (2)

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

Contrast
Response time Rising TR - 3 5 (1)(3)

White luminance ( Center)

Color chromati ci ty (CI E1931)

Viewing angle

Viewing angle

Bright ness unif ormit y

Item

Sy mbol Conditi on Min. Typ. Max. Uni t Note

CR 400 500 - (1)( 2)

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

Red

Gre en

Blue

Whi t e

Hor

Ver

Hor

Ver

Θ=0view angle

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 -

CR>10

ΘU 60 65 ­ΘD 60 65 ­ΘL 75 80 ­ΘR 75 80 -

CR>5

ΘU 75 80 ­ΘD 75 80 ­BUNI Θ = 0 70 75 - % (6 )

mse c

(1)(4)

10

ACER AL1716W

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2. Flat Panel Specification (continued)

2.7.4 Block Diagram

TFT LCD Module

Connector CN1

DC/DC

Converter

Backlight Unit

2.7.5 Pixel Format

TCON with

LVDS Receiver

Gamma

Reference

Voltage

Generator

TFT LCD Module

Terminal no. Symbol Function Note

1 GND Ground

X-driver IC

Liquid Crystal

Panel 1440x900

pixels

Y-dr iver IC

2 VDD Power Suppl y : +5.0V
3 VDD Power Suppl y : +5.0V
4 NC Reserved for suppli er test poi nt
5 NC Reserved for suppli er test poi nt
6 NC Reserved for suppli er test poi nt
7 NC Reserved for suppli er test poi nt
8 Odd_Rin0- - LVDS diff erential data input (R0-R5, G0) (2)
9 Odd_Rin0+ + LVDS different ial data i nput (R0-R5, G0) (2)
10 GND Ground
11 Odd_Rin1- - LVDS di fferential data input (G1-G5, B0-B1) (2)
12 Odd_Rin1+ + LVDS differenti al data input (G1-G5, B0-B1) (2)
13 GND Ground
14 Odd_Rin2- - LVDS di fferential data input (B2-B5,NC,NC,DE) (2)
15 Odd_Rin2+ + LVDS differenti al 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 di fferential data input (R0-R5, G0)
21 Even_Rin0+ + LVDS differ ential data input (R0-R5, G0)
22 GND Ground
23 Even_Rin1- - LVDS di fferential data input (G1-G5, B0-B1)
24 Even_Rin1+ + LVDS differ ential data input (G1-G5, B0-B1)
25 GND Ground
26 Even_Rin2- - LVDS di fferential data input (B2-B5,NC,NC,DE)
27 Even_Rin2+ + LVDS differ ential data input (B2-B5, NC, NC, DE)
28 GND Ground
29 Even_ClkIN- - LVDS different ial clock i nput
30 Even_ClkIN+ + LVDS differ ential clock input

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

Voltage of power s upply

Item

Current of power supply

Vsync f requency
Hsync fr equency
Frequency
Input rush cur rent

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 r ef 6.5 t4

fDCLK 44.375 53.25 68.375MHz ref 6.5 t 7

IRush - - 1.5 A (2)

Note (1) White and V-color

2.7.6 Interface Pin Connection

Backlight Unit

Terminal No. Symbol Function
1 VL CCFL power supply (high voltage)
2 NC No connection
3 GL CCFL power supply (low voltage)

Mosaic: Dot checker image

2. Flat Panel Specification (continued)

ACER AL1716W

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11

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.

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)

Operating lamp life time

Startup voltage Vs V(rms)

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

Note (1) Lamp current is measured with current meter

for high frequency as shown below. Specified

valued are for single lamp.

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.

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.

2.9 Switching Characteristics for LVDS Receiver

12

ACER AL1716W

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3.1 Packing Exploded Diagram

3. Exploded Diagram

3.2 Product Exploded Diagram

1

3. Exploded Diagram (continued)

5

6

8

15

14

16

ACER AL1716W

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3

13

18

7

9

17

2

19

4

10

11

13

12

14

ACER AL1716W

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4.1 Power board

voltage +5V and +22V whether if

Check output

correct supply

NG

OK

4. Troubleshooting

It is not power board problem.

Check power switch whether if turn on

OK

Check power cord

P801, signal cable P302, P103, P 104

is correct connected

OK

Check C805 value is about

140Vdc -330Vdc

OK

Check C807 is greater than 11V Check R807, D804, I801 whether to be damaged.

OK

Check I801 pin6 has same pulse Check peripheral component of I801 whether to be damaged.NG

NG

Turn switch on.NG

Connect the cables whether to be correct connected.NG

Check F801, T801, R802, D801 w hether to be dam aged.NG

OK

Check T802 PIN1 has same pulse or

not

OK

Check peak voltage of R 811 triangle

pulse is up to 0.52V or not

OK

Check D 809, D810,

C818, C824, C823, C817, C822, T802

have same short circuit or the output

+5V/+22V is over load

OK

Check feedback circuit around I802, I803 and
the other com ponents and repair them

NG

NG

NG

Check Q 803, R813, R814, D806 whether to be damaged

Check D804 and R807 w hether to be dam aged

Check D809, D810, C818, C824, C823, C822, T802 whether to
be dam aged.