Acer AL1717P Schematic

Acer AL1717

Service Guide

Service guide files and updates are available on the CSD web: for more information, Please refer to http://csd.acer.com.tw/

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transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any

means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission

of Acer Incorporated.

Disclaimer

The information in this guide is subject to change without notice. Acer Incorporated makes no representations or

warranties, either expresses or implied, with respect to the contents hereof and specifically disclaims any warranties of

merchantability or fitness for any particular purpose, Any Acer Incorporated software described in this manual is sold or

licensed “as is ”. Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated,

its distributor, of its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or

consequential damages resulting from any defect in the software.

Acer is a registered trademark of Acer Corporation.

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.

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Conventions

The following conventions are used in this manual:

Screen messages

Note

Warning

Caution

Important

Denotes actual messages that appear on screen

Gives bits and pieces of additional information related to the current topic.

Alerts you to any damage that might result from doing or not doing specific actions.

Gives precautionary measures to avoid possible hardware or software problems.

Reminds you to do specific actions relevant to the accomplishment of procedures.

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 BASICCONFIGURATION

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 not WHEN ORDERING FRU PARTS, that you should check the most up-to-date information

available on your regional web or channel. If, for whatever reason, a part number change is made, it will

not be noted in the printed Service Guide, for ACER-AUTHORIZED SERVICE PROVIDERS, your Acer

office may have a DIFFERENT part number code to those given in the FRU list of this printed Service

Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and

Service of customer machines.

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WARNING: (FOR FCC CERTIFIED MODELS)

NOTE: this equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed and

used in accordance with the instructions, may cause harmful interference to radio communications. However, there is

no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception,

Which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference

by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4. Consult the dealer or an experienced radio/TV technician for help.

Warning

Use only shielded signal cables to connect I/O devices to this equipment. You are cautioned that changes or

modifications not expressly approved by the party responsible for comliance could viold your authority to operate the

equipment.

As an ENERGY STAR

guidelines for energy efficiency.

Partner our company has determined that this product meets the ENERGY STAR

WARNING:

To prevent fire or chock hazard, do not expose the monitor to rain or moisture. Dangerously high voltages are

present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.

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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 manufacture or sold

with the monitor. If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacture and

follow the kit instructions.

z Slots and openings in the back and bottom of the cabinet area 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. 3.5A.

z The wall socket shall be installed near the equipment and shall be easily accessible.

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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 in the screen depending on the desktop 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 previous screen may remain after switching the image,

when the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image or

turning off the Power Switch for hours.

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Table of contents

Chapter 1 Monitor Feature …………………………………………………………………...………..8

Chapter 2 Operating Instruction ………………………………………………..……………………..27

Chapter 3 Machine Disassembly and Replacement …………………………………..…………35

Chapter 4 Troubleshooting …………………………………………………………………………..48

Chapter 5 Connector Information …………………………………………………………………..52

Chapter 6 FRU List …………………………………………………………………………………… 53

Chapter 7 Schematic Diagram ….……………………………………………………………………..63

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Chapter 1

Monitor Feature

INTRODUCTION

Scope

This specification defines the requirements for the 17” MICRO-PROCESSOR based Multi-mode

supported high resolution color LCD monitor. This monitor can be directly connected to general 15

pin D-sub VGA connector and eliminates the requirement of optional special display card. It also

supports VESA DPMS power management and plug & play function. There is a build-in stereo

audio amplifier with volume control to drive a pair of speakers.

Description

The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no

radiation. This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop space,

and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is

20k hours or more.

Comparison Chart of AA677

Panel

Signal Interface DSUB Sync Type for analog input

Color Temp user adjust

DDC Speaker 0.5W+0.5W Headphone Jack NO Microphone Jack No USB Hub Not support Tilt / Swivel Yes / No Height Adjust

AA677

Normal 17” panel

LG HT17E01-A5

TOPPOLY TD170WGCB2

Separate / compatible /

Support

DDC2B

Option

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ELECTRICAL REQUIREMENTS

Standard Test Conditions

All tests shall be performed under the following conditions, unless otherwise specified.

Ambient light

Viewing distance

Warrn up time

All specifications : 30 minutes

Fully functional : 5 seconds

Measuring Equipment

Connected to the monitor under test.

Minolta CA100 photometer, or equivalent

Control settings

User brightness control : Maximum (unless otherwise specified )

User contrast control: Typical (unless otherwise specified )

User red/white balance,

Green/white balance and

Blue/white balance control : In the center (unless otherwise specified )

: 225 lux

: 50 cm in front of LCD panel

: Chroma 2250 signal generator or equivalent, directly

Power input

Ambient temperature

Analog input mode

: 110Vac or 230Vac

: 20 ± 5 ˚C ( 68 ± 9 ˚ F)

: 1280 x1024 /60 Hz

MEASUREMENT SYSTEMS

The units of measure stated in this document are listed below:

1 gamma = 1 nano tesla

1 tesla = 10,000 gauss

cm = in x 2.54

lb = kg x 2.2

degrees F = [°C x 1.8] + 32

degrees C = [°F - 32]/1.8

u' = 4x/(-2x + 12y + 3)

v' = 9y/(-2x + 12y + 3)

x = (27u'/4)/[(9u'/2) - 12v' + 9]

y = (3v')/[(9u'/2) - 12v' + 9]

nits = cd/(m2) = Ft-L x 3.426

lux = foot-candle x 10.76

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LCD monitor General specification

Panel Type: 17 “ active matrix color TFT LCD

1). LG HT17E01-A05

2). Toppoly TD1402

Display size: 37.92mm (H) × 270.34mm(V)

Display mode: VGA 720 × 400 (70 Hz)

VGA 640 × 480 (60/66/70/72/75 Hz)

SVGA 800 × 600 (60/70/72/75 Hz)

XGA 1024 × 768 (60/70/75 Hz)

SXGA 1280 × 1024 (60/70/75 Hz) standard resolution

Pixel pitch: 0.264mm(H) × 0.264mm(V)

Display Dot: 1280 x (RGB) × 1024

Pixel Clock: 25.2 – 135.0MHz

Contrast ratio:

Brightness: LG:250, TOPPOLY 260(typical)

Response time (Tr/Tf): LG(16), TOPPOLY (12)

Display color: 16.2M(6 bit color+FRC)

Viewing angle: LG L / R ≧ 70 / ≧ 70 (≧ 140 degrees horizontal typical)

U / D ≧ 60 / ≧ 60(≧ 120 degrees vertical typical)

TOPPOLY L / R ≧ 75 / ≧ 75

U / D ≧ 75 / ≧ 60

Luminance Uniformity: > 75 % (typical)

Pc interface: 1).Video: RGB analog 0.7V peak to peak

Sync: TTL positive or negative

Signal connector: 15 pin Mini D type, (standard VGA video)

3.5 mm stereo audio jack (Audio) (For AR577 only)

Audio power: 0.5Wrms + 0.5Wrms (300Hz – 10kHz (S.P.L. – 10 dB))(AA677 only)

= 0˚ LG 450 : 1 , TOPPOLY 450 :1

Front control: power on/off with LED select adjustment (+,-)

Interface frequency

Horizontal Frequency 24KHz --80KHz

Vertical Frequency 49Hz ------75Hz

Plug & play: Support VESA DDC2B functions

Power Input voltage: Single phase, 50/60HZ, 100 VAC to 240VAC ±10%

Total output power: 40 Watt max.

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LCD Panel Specification

LCD Panel Model (LG LT17E01-A05)

• Display Type active matrix color TFT LCD

• Resolution 1280x1024 pixels

• Display Dot 1280x (RGB) x 1024

• Display Area 337.92mm(H) x 270.34mm(V)

• Pixel Pitch 0.264mm(H) x 0.264mm(V)

• Display Color 16M (6 bite color+FRC)

• Lamp Voltage 650 Vrms (typ)

• Lamp Current 6.5 mArms (typ)

• Weight 1890g (typ)

• Optical Specifications

= 6.5mA (RMS) Ta = 25 ± 2°C VDD = 5V FV = 60Hz F

ITEM Symbol Condition MIN. TYP. MAX. UNIT

Contrast Ratio

(Center of screen)

Response

Time at Ta

Luminance of white

(Center of screen)

Color

Chromaticity

(CIE)

Rising T

Falling T

Red

Green

Blue

White

WX 0.283 0.313 0.343

0.581 0.611 0.641

BX 0.117 0.147 0.177

0.038 0.068 0.098

θL

φ=0,

θ=0

Normal

Viewing

Angle

350

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0.611 0.641 0.671

0.312 0.342 0.372

0.262 0.292 0.322

0.299 0.329 0.359

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430

250

= 54MHz

DCLK

(total)

msec

cd/m

Viewing

Angle

Hori.

Vert.

Brightness Uniformity B

Flicker F - - 5 %

Cross talk C

UNI

CR≥10

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- 60 -

Degrees

- - 1.7

- - 2.0 %

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LCD Panel Model (ToppolyTD170WGCB2)

• Display Type active matrix color TFT LCD

• Resolution 1280x1024 pixels

• Display Dot 1280x (RGB) x 1024

• Display Area 337.92mm(H) x 270.34mm(V)

• Pixel Pitch 0.264mm(H) x 0.264mm(V)

• Display Color 16M (6 bite color+FRC)

• Lamp Voltage 655 Vrms (typ)

• Lamp Current 7 mArms (typ)

• Weight 1850g (typ)

• Optical Specifications

= 7mA (RMS) Ta = 25 ± 2°C VDD = 5V FV = 75Hz F

Item Symbol Condition Min. Typ. Max. Unit

65 75 -

50 60 -

300 450 -

- 4 5

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Viewing Angle

Contrast Ratio

(Center point)

Response time

Luminance of White

(Center point)

Color

Chromaticity

(CIE1931)

Hor.

Ver.

Rising T

Falling T

Wx 0.622 0.652 0.682

White

Wy 0.303 0.333 0.363

Red

Green

θL

θH

YL 200 260 -

Rx 0.247 0.277 0.307

Ry 0.599 0.629 0.659

Gx 0.111 0.141 0.171

Gy 0.024 0.054 0.084

CR=10 At

center point

= 0˚

θ=0,

φ=0

Normal

Viewing

Angle

= 135MHz

DCLK

degree

cd/m

Blue

9 Points White Variation

Cross Talk CT

Bx 0.28 0.31 0.34

By 0.30 0.33 0.36

0.7 0.8 -

- - 2.0 %

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Note 1) Definition of Viewing Angle: Viewing angle range (10≤CR)

Note 2) Definition of Contrast Ratio (CR): Ratio of gray max(Gmax),gray min(Gmin) at the center point of

panel.

Luminance with all pixels white (Gmax)

CR= 

Luminance with all pixels black (Gmin)

Note 3) Definition of Response time: Sum of T

, TF

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Note 4) After stabilizing and leaving the panel alone at a given temperature for 30 min, the measurement

should be executed .Measurement should be executed n a stable, windless ,and dark room.30 min

after lighting the back-light. This should be measured in the center of screen. Dual lamp

current :13.0mA(6.5mA x2)(Refer to the note(1) in the page 14 for more information ).

Environment condition :Ta=25±2°C

Optical characteristics measurement setup

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Notes 5) Definition of Luminance of White : measure the luminance of white at center point.

Notes 6)Definition of 5 points brightness uniformity (Measuring points: Refer to the Note 5)

Bmax

= 

UNI

Bmin

Bmax: Maximum brightness

Bmin: Minimum brightness

Notes 7) Definition of Flicker level

Flicker Voltage

F =  x 100 %

LMD Voltage

♦ One maximum value of three estimated values.

♦ For this test ,an LMD(Light Measurement Device)is needed with adequate response time to track any

visible rate flicker component and with a voltage level output proportional

To luminance intensity.

♦ Test Pattern: For dot inversion Driving(Gray levels of foreground dots on the test panel

Are G22,G32,and G45)

♦ Test Point :Center point of the display area

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Note 8) Definition of Crosstalk (Refer to the VESA STD)

The calculation for shadowing is made from the 2 luminance measurements Gbkg and Lsh, as follows:

Lmax -Lmin

=  x100 %

Lmin

Where Lmax is the larger value of Gbkg or Lsh , and Lmin is the smaller of the two.

♦ To determine background and foreground levels (colors),first set the background to any gray scale or

color level suitable for shadowing determination.(Note that it may take several iterations of adjusting

background level and box levels to determine the proper value for the background .Next display the box

levels to determine the proper value for the background level. Look for shadowing in any direction from box E.

Independently vary the gray level (or color) of the background and box E until the worst case shadowing is

observed. This defines the background (Gbkg) and foreground (Gfg) levels to be maintained for the

remainder of the test.

♦ One point only (the target) will be measured. To determine that point proceed as follows

Using the background and foreground gray levels of step1 (Gbkg and Gfg). Turn on each box at a time. Look

for the case with the worst shadowing. The box causing the worst case is the shadowing source, or Bsrc. Use

Bsrc and the box opposite from it that lies directly in the shadow path. That is the target box, or Btgt. Note that

box Eight be either Bsrc or Btgt, depending on the shadowing conditions, but typically Bsrc and Btgt will be a

pair of opposite boxes, A&C or B&D. Btgt will only be displayed for aligning the LMD. It will be turned off for

the actual measurement.

♦ The target box point (Btgt) will be measured with the source box (Bsrc) turned on then off. (Btgt is for

alignment purpose only) Display the background only at level Gbkg. Display Btgt determined in step 2 above.

Using the correct distance, angle, and measurement aperture, align the LMD to the center of the Btgt. Turn

off Btgt. With Gbkg set to its proper level, measure the luminance (or color). Next,turn on the source box Bsrc.

Again measure at the center point of Btgt (without Btgt present.). In this case the LMD will be measuring the

shadowing level, Lsh.

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Panel Relative Humidity

Input Signals

Video input

• Type Analog R, G, B.

• Input Impedance 75 ohm +/- 2%

• Polarity Positive

• Amplitude 0 - 0.7 +/- 0.05 Vp

• Display Color same as LCD panel

Sync input

• Signal separate horizontal and vertical sync, or composite sync

• Polarity positive and negative.

Interface frequency

The following frequency range is generalized by supported timing. If the entered

JP777-E02

which are TTL compatible

mode does not match the supported timing the display optimization will not be

assured.

• Horizontal Frequency 24KHz --80KHz

• Vertical Frequency 49Hz -------75Hz

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Supported Timing

TIMING FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ.(MHZ

(DOT/LINE) (DOT/LINE) (DOT/LINE) 640x350 31.469 + 800 640 96 16 48 25.175 VGA-350 70.087 – 449 350 2 37 60 640x400 24.83 – 848 640 64 64 80 21.05 NEC PC9801 56.42 – 440 400 8 7 25 640x400 31.469 – 800 640 96 16 48 25.175 VGA-GRAPH 70.087 + 449 400 2 12 35 640x400 31.5 – 800 640 64 16 80 25.197 NEC PC9821 70.15 – 449 400 2 13 34 640X480 31.469 - 800 640 96 16 48 25.175 VESA-PAL 50.030 - 629 480 2 62 85 640x480 31.469 – 800 640 96 16 48 25.175 VGA-480 59.94 – 525 480 2 10 33 640x480 35.00 – 864 640 64 64 96 30.24 APPLE MAC-480 66.67 – 525 480 3 3 39 640x480 37.861 – 832 640 40 16 120 31.5 VESA-480-72Hz 72.809 – 520 480 3 1 20 640x480 37.5 – 840 640 64 16 120 31.5 VESA-480-75Hz 75 – 500 480 3 1 16 720x400 31.469 – 900 720 108 18 54 28.322 VGA-400-TEXT 70.087 + 449 400 2 12 35 832x624 49.725 – 1152 832 64 32 224 57.2832 APPLE MAC-800 74.55 – 667 624 3 1 39 800x600 35.156 + 1024 800 72 24 128 36 SVGA 56.25 + 625 600 2 1 22 800x600 37.879 + 1056 800 128 40 88 40 VESA-600-60Hz 60.317 + 628 600 4 1 23 800x600 48.077 + 1040 800 120 56 64 50 VESA-600-72Hz 72.188 + 666 600 6 37 23 800x600 46.875 + 1056 800 80 16 160 49.5 VESA-600-75Hz 75 + 625 600 3 1 21 1024x768 48.363 – 1344 1024 136 24 160 65 XGA 60.004 – 806 768 6 3 29 1024x768 53.964 + 1328 1024 176 16 112 71.664 COMPAQ-XGA 66.132 + 816 768 4 8 36 1024x768 56.476 – 1328 1024 136 24 144 75 VESA-768-70Hz 70.069 – 806 768 6 3 29 1024x768 60.023 + 1312 1024 96 16 176 78.75 VESA-768-75Hz 75.029 + 800 768 3 1 28 1024x768 60.24 – 1328 1024 96 32 176 80 APPLE MAC-768 75.02 – 803 768 3 3 29 1152x864 54.054 + 1480 1152 96 40 192 80 (60Hz) 59.270 + 912 864 3 13 32 1152x864 63.851 + 1480 1152 96 32 200 94.499 (70Hz) 70.012 + 912 864 3 1 44 1152x864 67.50 + 1600 1152 128 64 256 108.00 (75Hz) 75.00 + 900 864 2 2 32 1280x960 60.00 + 1800 1280 112 96 312 108.00 (60Hz) 60.00 + 1000 960 3 1 36 1280x960 70.00 + 1800 1280 112 96 312 126.00 (70Hz) 70.00 + 1000 960 3 1 36 1280x960 75.00 + 1800 1280 112 96 312 135.00 (75Hz) 75.00 + 1000 960 3 1 36 1280x1024 64 + 1688 1280 112 48 248 108 VESA-1024-60H z 1280x1024 80 + 1688 1280 144 16 248 135 VESA-1024-75H z

FH(KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL

)

60 + 1066 1024 3 1 38

75 + 1066 1024 3 1 38

Note: Mode 640x350, 640x400 and 720x400 will locate on middle position but cannot be expanded to full screen

on vertical direction

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Support Modes

There will be 28 total support modes to accommodate the above mode and other video modes within the frequency range of the monitor.

85Hz refresh rate Support

Monitor should display 85Hz refresh rate mode as emergency mode.

Monitor should display “Out of Range” warning menu at this mode.

Video input Connector

Analog Video input Connector: 15pins mini D-Sub

Table 2.4.5. Pin assignment for D-sub connector

PIN NO. Separate Sync

1 RED VIDEO

2 GREEN VIDEO

3 BLUE VIDEO

4 GROUND

5 GROUND

6 RED GROUND

7 GREEN GROUND

8 BLUE GROUND

9 PC5V (+5V DDC)

10 CABLE DETECTION

11 GROUND

12 SDA

13 H.SYNC

14 V.SYNC

15 SCL

Color of plastic parts: Blue (PC99)

5 1

D-sub connector

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Monitor Block Diagram

The LCD monitor will contain an main board, an inverter/ power board, key board and internal adapter 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.

Power board

(include: AC/DC,inverter)

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BLOCK DIAGRAM

System Block Diagram

24LC02B

LV D S Si gn a ls

Including ADC,

Scaling LVDS

And OSD function

TPA6019 Audio

MCU

24LC16 (24LC02B)

Power Amplifier

with DC volume

control

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Monitor board layout

CN5

CN3

CM6

J502

J501

LABEL Component LABEL Component

U1 24LVC2B CN1 D-SVB 15 PIN

U3 TSU16AJ CN6 E&T 4501-19

U6 24LC16B(24LVO2B) CN3 E&T 4501-09

U5 MX810 J502 E&T 4501-05

U7 APM4461 J501 E&T 4501-03

U4 PMX10E8D50I CN5 P-TWO AFN300 30P

U8 APL1085-3.3 CE

U9 APL1117-2.5 VC

U501 ATPA6019

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+ 51 hidden pages