Acer Computer Monitor AL1912 User Manual

Acer AL1912

Service Guide

Service guide files and updates are available on the

CSD web: for more information,

Please refer to http://csd.acer.com.tw/

- 1 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Conventions

The following conventions are used in this manual:

Screen messages

Note

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.

Warning

Caution

Important

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.

- 3 -

Download from Www.Somanuals.com. All Manuals Search And Download.

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

guidelines for energy efficiency.

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.

- 4 -

Download from Www.Somanuals.com. All Manuals Search And Download.

PRECAUTIONS

ꢀ

Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub,

Swimming pool or in a wet basement.

ꢀ

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.

ꢀ

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.

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.

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.

ꢀ

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.

ꢀ

Do not overload power strips and extension cords. Overloading can result in fire or electric shock.

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.

ꢀ

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.

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.

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

- 5 -

Download from Www.Somanuals.com. All Manuals Search And Download.

SPECIAL NOTES ON LCD MONITORS

The following symptoms are normal with LCD monitor and do not indicate a problem.

NOTES

ꢀ

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.

ꢀ

You may find slightly uneven brightness in the screen depending on the desktop pattern you use.

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.

ꢀ

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.

- 6 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Table of contents

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

INTRODUCTION...............................................................................................................................................................8

ELECTRICAL REQUIREMEENTS....................................................................................................................................9

MONITOR BLOCK DIAGRAM ....................................................................................................................................... 15

BLOCK DIAGRAM ......................................................................................................................................................... 16

MONITOR BOARD LAYOUT ......................................................................................................................................... 17

SOFTWARE FLOW CHART .......................................................................................................................................... 18

GENERAL INSTRUCTIONS .......................................................................................................................................... 19

SYSTEM INSTALLATION .............................................................................................................................................. 20

POWER/INVERTOR BOARD ........................................................................................................................................ 25

ELECTRICAL SPECIFICATION..................................................................................................................................... 26

INVERTER ELECTRICAL SPECIFICATION ................................................................................................................. 28

SAFETY ......................................................................................................................................................................... 28

Chapter 2 Operating Instruction ………………………………………………..……………………..30

CONTROLS ................................................................................................................................................................... 30

MAIN OSD MENU.......................................................................................................................................................... 31

OSD MESSAGE............................................................................................................................................................. 33

PLUG AND PLAY ........................................................................................................................................................... 35

WHITE COLOR TEMPERATURE.................................................................................................................................. 36

AUDIO TECHNICAL SPECIFICATION (FOR AL1912 m ONLY) ................................................................................... 36

SPEAKERS.................................................................................................................................................................... 37

Chapter 3 Machine Disassembly and Replacement …………………………………..…………38

DISASSEMBLY PROCEDURE...................................................................................................................................... 38

Chapter 4 Troubleshooting …………………………………………………………………………..41

TROUBLESHOOTING................................................................................................................................................... 41

Chapter 5 Connector Information …………………………………………………………………..45

CONNECTOR INFORMATION...................................................................................................................................... 45

Chapter 6 FRU List …………………………………………………………………………………… 46

FRU (Field Replaceable Unit) list................................................................................................................................... 46

PART LIST...................................................................................................................................................................... 49

Chapter 7 Schematic Diagram ….……………………………………………………………………..52

SCHEMATIC DIAGRAM ................................................................................................................................................ 52

- 7 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 1

Monitor Feature

INTRODUCTION

Scope

This specification defines the requirements for the 19” 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 AL1912 m/AL1912

AL1912 m

AL1912

Normal 19” panel

Panel

Fujitsu FLC48SXC8V-10

Signal Interface

DSUB

Sync Type for analog input

Separate / compatible /

Support

Color Temp user adjust

DDC

DDC2B

0.5W+0.5W

DDC2B

Speaker

Headphone Jack

Microphone Jack

USB Hub

Not support

Yes / No

Not support

Yes / No

Tilt / Swivel

- 8 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Height Adjust

Option

ELECTRICAL REQUIREMENTS

Standard Test Conditions

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

Ambient light :

225 lux

Viewing distance :

Warrn up time

50 cm in front of LCD panel

All specifications :

Fully functional :

30 minutes

5 seconds

Measuring Equipment :

Chroma 2250 signal generator or equivalent, directly

Connected to the monitor under test.

Minolta CA100 photometer, or equivalent

Control settings

User brightness control :

User contrast control:

Maximum (unless otherwise specified )

Typical (unless otherwise specified )

User red/white balance,

Green/white balance and

Blue/white balance control :

Power input:

In the center (unless otherwise specified )

110Vac or 230Vac

Ambient temperature:

Analog input mode:

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/(m ) = Ft-L x 3.426

lux = foot-candle x 10.76

- 9 -

Download from Www.Somanuals.com. All Manuals Search And Download.

LCD monitor General specification

Panel Type:

19 “ active matrix color TFT LCD

1). Fujitsu FLC48SXC8V-10

Display size:

376.32mm (H) × 301.056mm(V)

Display mode:

VGA

SVGA

XGA

720 × 400 (70 Hz)

640 × 480 (60/66/70/72/75 Hz)

800 × 600 (60/70/72/75 Hz)

1024

768 (60/70/75 Hz)

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

0.294mm(H) × 0.294mm(V)

1280 x (RGB) × 1024

Pixel pitch:

Display Dot:

Pixel Clock:

25.2 – 135.0MHz

Contrast ratio: θ = 0˚

Brightness:

HYDIS 700:1 (typical)

HYDIS:300 (typical)

Response time (Tr/Tf):

Display color:

Viewing angle:

Ta=25°C, 15/10ms (typical)

16.2M

HYDIS L / R ≧ 85 / ≧ 85

U / D ≧ 85 / ≧ 85

Luminance Uniformity:

Pc interface:

> 75 % (min)

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 AL1912 m only)

0.5Wrms + 0.5Wrms (300Hz – 10kHz (S.P.L. – 10 dB))(AL1912 m only)

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

Audio power:

Front control:

Interface frequency

Horizontal Frequency 24KHz --80KHz

Vertical Frequency

Plug & play:

49Hz ------75Hz

Support VESA DDC2B functions

Power Input voltage:

Single phase, 50/60HZ, 100 VAC to 240VAC ±10%

- 10 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Total output power:

60 Watt max.

LCD Panel Specification

LCD Panel Model (Hydis LT17E12-200)

• Display Type

• Resolution

active matrix color TFT LCD

1280x1024 pixels

1280x (RGB) x 1024

376.32mm(H) x 301.056mm(V)

0.294mm(H) x 0.294mm(V)

16M

• Display Dot

• Display Area

• Pixel Pitch

• Display Color

• Lamp Voltage

• Lamp Current

• Weight

750 Vrms (typ)

7 mArms (typ)

2500g (Max)

• Optical Specifications

- 11 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Panel Relative Humidity

Input Signals

Video input

• Type

Analog R, G, B.

75 ohm +/- 2%

Positive

• Input Impedance

• Polarity

• Amplitude

0 - 0.7 +/- 0.05 Vp

same as LCD panel

• Display Color

Sync input

• Signal

separate horizontal and vertical sync, or composite sync

which are TTL compatible

• Polarity

positive and negative.

Interface frequency

The following frequency range is generalized by supported timing. If the entered mode does not match the supported

timing the display optimization will not be assured.

• Horizontal Frequency

• Vertical Frequency

24KHz --80KHz

49Hz -------75Hz

- 12 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Supported Timing

FH(KHZ)

TIMING

FV(HZ)

SYNC

TOTAL

ACTIVE

SYNC

FRONT

PORCH

BACK

PIXEL

FOREQ.(MHZ)

25.175

POLARITY (DOT/LINE) (DOT/LINE)

WIDTH

PORCH

(DOT/LINE) (DOT/LINE) (DOT/LINE)

640x350

VGA-350

640x400

NEC PC9801

640x400

31.469

70.087

24.83

56.42

31.469

70.087

31.5

–

800

449

848

440

800

449

800

449

800

629

800

525

864

525

832

520

840

500

900

449

1152

667

1024

625

1056

628

1040

666

1056

625

1344

806

1328

816

1328

806

1312

800

1328

803

1480

912

1480

912

1600

900

640

350

640

400

640

400

640

400

640

480

640

480

640

480

640

480

640

480

720

400

832

624

800

600

800

600

800

600

800

600

1024

768

1024

768

1024

768

1024

768

1024

768

1152

864

1152

864

1152

864

1280

960

1280

960

1280

960

1280

1024

1280

1024

108

128

120

136

176

136

128

112

144

120

224

128

160

112

144

176

192

200

256

21.05

25.175

25.197

25.175

30.24

31.5

VGA-GRAPH

640x400

NEC PC9821

640X480

VESA-PAL

640x480

VGA-480

640x480

APPLE MAC-480

640x480

VESA-480-72Hz

640x480

70.15

31.469

50.030

31.469

59.94

35.00

66.67

37.861

72.809

37.5

–

31.5

VESA-480-75Hz

720x400

VGA-400-TEXT

832x624

APPLE MAC-800

800x600

SVGA

800x600

VESA-600-60Hz

800x600

VESA-600-72Hz

800x600

VESA-600-75Hz

1024x768

31.469

70.087

49.725

74.55

35.156

56.25

37.879

60.317

48.077

72.188

46.875

28.322

57.2832

49.5

48.363

60.004

53.964

66.132

56.476

70.069

60.023

75.029

60.24

75.02

54.054

59.270

63.851

70.012

67.50

75.00

60.00

70.00

75.00

XGA

1024x768

COMPAQ-XGA

1024x768

VESA-768-70Hz

1024x768

VESA-768-75Hz

1024x768

APPLE MAC-768

1152x864

(60Hz)

1152x864

(70Hz)

1152x864

(75Hz)

1280x960

(60Hz)

1280x960

(70Hz)

1280x960

71.664

78.75

94.499

108.00

126.00

135.00

108

1800

1000

1800

1000

1800

1000

1688

1066

1688

1066

312

248

(75Hz)

1280x1024

VESA-1024-60Hz

1280x1024

VESA-1024-75Hz

248

135

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

vertical direction.

- 13 -

Download from Www.Somanuals.com. All Manuals Search And Download.

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

RED VIDEO

GREEN VIDEO

BLUE VIDEO

GROUND

RED GROUND

GREEN GROUND

BLUE GROUND

PC5V (+5V DDC)

CABLE DETECTION

GROUND

SDA

H.SYNC

V.SYNC

SCL

Color of plastic parts: Blue (PC99)

D-sub connector

- 14 -

Download from Www.Somanuals.com. All Manuals Search And Download.

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.

The Adapter will provide thr 12V DC-power to inverter/ power board.

Power board

(include: AC/DC,inverter)

- 15 -

Download from Www.Somanuals.com. All Manuals Search And Download.

BLOCK DIAGRAM

System Block Diagram

LVDS Signals

MCU

MVPRL including ADC,

Scaling LVDS

And OSD function

- 16 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Monitor board layout

LABEL

Component

LABEL

Component

74LVC14

CN1

D-SVB 15 PIN

U10

U11

24LVC21

MVPRL

CN9

E&T 4501-10

E&T 6113-08

E&T 4501-11

E&T 4501-03

E&T DF14-30

CN3

M8064I

CN301

CN302

CN7

24LC16B

MAX810

SI9435

LM4838

APL1085-3.3 CE

APL1117-2.5 VC

- 17 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Software flow chart

- 18 -

Download from Www.Somanuals.com. All Manuals Search And Download.

General Instructions

Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor.

By changing these settings, the picture can be adjusted to your personal preferences.

ꢀ

The power cord should be connected.

Connect the video cable from the monitor to the video card.

Press the power button to turn on the monitor position. The power indicator will light up.

AL1912 m

AL1912

External Controls

Auto Adjust Key/Exit

MENU/ENTER

LED

</ Volume

>/ Volume

/ Power Key

- 19 -

Download from Www.Somanuals.com. All Manuals Search And Download.

System Installation

Connecting the Display

ꢀ

Power off your computer.

Connect one end of the signal cable to the LCD Monitor’s VGA port.

Connect the other end of the signal cable to the VGA port on your PC.

Make sure connections are secure.

Connecting the AC Power

ꢀ

Connect the power cord to the LCD Monitor.

Connect the power cord to an AC power source.

Connecting the Audio Cable (For AL1912 m and AL1912 bm)

ꢀ

Connect the audio cable to the " LINE OUT " jack on your PC's audio card or to the front panel's “AUDIO OUT” jack

of your CD ROM drive.

ꢀ Connect the other end of the audio cable to the LCD Monitor's " AUDIO IN " jack.

- 20 -

Download from Www.Somanuals.com. All Manuals Search And Download.

The step between front bezel and back cover shall be within specification.

Top and Bottom

Left and Right

Back cover & Bezel concavity

0.8mm ≤ A ≤ 1.3 mm

Back cover & Bezel concavity

0.8mm ≤ A ≤ 1.3 mm

Back Cover & Hinge Cover concavity

0mm ≤ B ≤ 0.5mm

- 21 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Base & Neck concavity

0mm ≤ C ≤ 0.6mm

Top and Bottom

Left and Right

Back cover & Bezel step

0mm ≤ D ≤ 0.8 mm

Back cover & Bezel step

0mm ≤ D ≤ 0.8 mm

- 22 -

Download from Www.Somanuals.com. All Manuals Search And Download.

LCD Horizontally

The angle between front bezel and LCD unit in bottom side should not large than 1.0mm.

The distance of the LCD display unit from left side to right should not large than 4.0mm.

- 23 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Tilt Base Rotation

Tilt up 15 ± 2°/ down 5 ±2°

Plastic Material

For TCO99

Front Bezel PC+ABS

Back Cover PC+ABS

The Others ABS 94HB

For MPRII

Front Bezel ABS 94V-0

Back Cover ABS 94V-0

The Others ABS 94HB

GAP Spec.

Gap between panel with bezel is 0 mm < gap < 1.2 mm

- 24 -

Download from Www.Somanuals.com. All Manuals Search And Download.

POWER/Inverter Board

Description

This specification defined the performance and characteristic of power/inverter board.

It supplies the following outputs :

1). 5Vdc: Logic power.

2). 5Vaudio: Audio power.

3). 15Vinv: Inverter power.

Features

Input Voltage: 100 ~ 240 ±10％Vac

Input current: 1.2Amax. at 90Vac

Input Frequency: 47 ~ 63Hz

Input power saving consumption: Less than 1.2W @ minimum load

Total output power: 60Wmax

Inverter brightness adjustment: Burst mode

Protection function: auto-recovery type

Interface Signals

Input

1. AC Inlet: HUAJIE SA-4S-066 or compatible.

2. J701: SC SCJ-0345-1-X-9 3.6D BLU 3P or compatible.

Output Connector & Pin Assignment:

1. The connecter was pitch 2.0mm, cable length was 125mm.

PIN NO.

Function

+5Vaudio

GND

Function

Audio power (optional).

Audio ground

Ground

GND

Ground

Vbri

Brightness control from logical board (0V to 3.3V)

-----

----

Ven

Inverter enable signal from logical board (high active , >3V)

+5Vdc supply for logical board

+5Vdc

+5Vdc supply for logical board

- 25 -

Download from Www.Somanuals.com. All Manuals Search And Download.

2.Inverter-side connecter : SM02B-BHSS-1-TB(JST) for AL1912 m

/ SM02(8.0)B-BHS-1(JST) for AR599 or equivalent.

PIN NO.

Function

Cth

Comment

VBLH(High voltage)

VBLL(Low voltage)

Ctl

Electrical Specification:

AC-DC Electrical specification

Input Specification

Item

Condition

Min.

Typ.

Max.

Unit

Input Voltage

-----

100

---

240

Vac

Input Frequency

Input Current

---

1.0

Arms

Cold Start @Vin=100Vrms

Cold Start @Vin=240Vrms

---

A_0-P

Inrush Current

---

Hold Up Time

Turn on time

Efficiency

@full load & 100Vac input

Vin =110Vac

---

1.0

---

Full load

Consumption

Vin=240Vac,@ no load

- 26 -

Download from Www.Somanuals.com. All Manuals Search And Download.

AC-DC Output Specification

Tolerance

---

Output Current

Voltage Tolerance

Output Voltage

+5Vdc

MIN

MAX

1.5A

+5 /-3 %

+35/-5 %

±5%

0.05A

4.85~5.25V dc

20~14.3Vdc

+15Vinv

+5Vaudio

0.6A

4.75~5.25Vdc

1.Measured at DC

output terminals which

are paralleled with a

10uf Ecap &0.1uf

Ceramic cap.

+5Vdc:50mVp-p

Ripple

Noise

---

+15Vinv:150mVp-p

+5Vdc:150mVp-p

+15Vinv:450mVp-p

2.Band width is limited

within 20MHz.

50~100% or 100~50%

load change of any DC

output @50% duty of

1MHz (min.)

Dynamic Load Regulation

Over / Under Shoot

---

±5%

@ Power line on/off

*+5Vdc load regulation test: the +15Vinv loading at 2.0A

*+15Vinv load regulation test: the +5Vdc loading at 1.5A

Protection function

1) SCP: Short circuit protection must be acted on both outputs

2) OPP: Should be protected when output power consumption is within 60W ~ 75W

- 27 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Inverter Electrical Specification:

For Fujitsu FLC488SC8V-10 (AL1912 m)

Condition

Min.

---

Typ.

Max.

---

Unit

Input Voltage

---

Input Current

---

1.5

3.3

---

Backlight ON/OFF Control

OFF

Min. Luminance / Max.

Luminance

---

30%

---

Brightness Adjust

Output Voltage

Brightness

Vin=15V, Iout=6.5mA

---

750

300

Vrms

lamp current in 6.5mA

250

Cd/m²

Output Current(Each connector)

Vbri=0.4V~3.3V

Frequency

Lamp start voltage

Striking Time

---

@0℃

---

KHz

Vrms

1600

Lamp Current Balance

Efficiency

---

±0.3

---

Vin=15V

---

Operating Life Time

50000

*.The open lamp voltage is testes at output connector terminal

SAFETY

Leakage Current: 0.25mA @ 100Vac

Insulation Resistance: more than 3M ohms while withstanding a voltage of 500Vac

Hi-Pot: 3Kvac with using 3mA cut off current

- 28 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Power Consumption

The monitor is equipped with a power-management according to the below.

There is a delay of 5s … 7s before the transition from On-state to any power saving state to avoid

unintentionally entering of a power saving stage during display resolution and timing mode changes.

Transition from any power saving state to another can be instantaneous.

The recovery from Off-state requires no manual power on.

Mode

H-Sync.

V-Sync.

Video

Pw-cons.

< 60W

< 3 W

Indicator

Rec. time*

Power-On

Power-off

Switch-off

active

Green LED

Orange LED

Dark LED

off

blanked

< 5S

< 3 W

SYNC. On means: Normal operation

SYNC. Off means: H sync. F < 10KHz duty cycle > 25%

V sync. F < 10Hz duty cycle > 25%

CONNECTORS / CONTROLS

Connectors

Power

: Monitor rear side

: Monitor rear side / Data Cable

: AC Inlet

Analog RGB

: 15-pin D-sub female / male

Pin – Assignment of 15-pin D-sub:

Red Video

+5V FOR DDC

Green Video

Blue Video

Detect

Serial Data for ISP

Serial Data for DDC

H-Sync.

Serial Clock for ISP

Ground

Red Ground

Green Ground

Blue Ground

V-Sync.

Serial Clock for DDC

Audio

: Monitor rear side

-PC I/P for PC

: 3.5mm Stereo female

Monitor Control Keys

Power , Menu , Adjust +/- , Vol +/-, Auto

KEY :

Position Of Controls

Position of all switches

Position of LED

: Bottom side of front bezel

- 29 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 2

Operating Instructions

CONTROLS

Control panel (monitor front panel)

1. Power ON/OFF switch, push to ON and push to OFF. (Toggle switch)

2. Power LED will be blue when monitor is on; be amber when in power saving mode.

3. Menu.

4. Adjust increase (Function select).

Adjust decrease (Function select).

5. Auto adjustment Buttons.

Note:

1. Press button 4 (plus +) or (minus -) at the same time can activate “Volume Adjustment”.

2. When OSD Menu is off, press button 5 (auto) at the same time can activate “Auto Adjustment” immediately.

3. When into Factory mode press 4 (plus +),(minus -) and 1 (power) together 2 seconds at same time.

5. When into Burning mode press 5 (menus), 1 (power) together 2 second at same time.

- 30 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Main OSD Menu:

Outline:

The description for control function :

Main Menu Sub Menu

Sub Menu Description

Adjustment Reset Value

Range

Icon

Item

Icon

Contrast

Contrast from Digital-register.

Backlight Adjustment

0-100

Recall Cool

Contrast Value

Recall Cool

Brightness

Focus

Brightness Value

Do Auto Config

Adjust Picture Phase to reduce

Horizontal-Line noise

Clock

Adjust picture Clock to reduce

Vertical-Line noise.

Do Auto Config

H. Position

V. Position

Warm

Adjust the horizontal position of the 0-100

picture.

Adjust the verticalposition of the

picture.

0-100

N/A

Recall Warm Color Temperature

from EEPROM.

N/A

The Color

Temperature will be

set to Cool.

Cool

Recall Cool Color Temperature from N/A

EEPROM.

- 31 -

Download from Www.Somanuals.com. All Manuals Search And Download.

User / Red

User / Green

User / Blue

English

Red Gain from Digital-register.

Green Gain Digital-register.

Blue Gain from Digital-register.

0-100

N/A

100

N/A

Set OSD display language to

English.

The Language will

be set to English.

繁體中文

Deutsch

Set OSD display language to

Tranditional Chinese.

Set OSD display language to

German.

N/A

Français

Set OSD display language to

French.

N/A

Español

Italiano

N/A

Set OSD display language to Spain. N/A

Set OSD display language to Italian. N/A

简体中文

Set OSD display language to

Simplified Chinese.

N/A

日本語

N/A

Set OSD display language to

Japanese.

N/A

H. Position

V. Position

OSD Timeout

Adjust the horizontal position of the 0-100

OSD.

Adjust the verticalposition of the

OSD.

0-100

Adjust the OSD timeout.

10-120

Auto Config N/A

Auto Adjust the H/V Position, Focus N/A

and Clock of picture.

N/A

Information

Reset

N/A

Show the resolution, H/V frequency N/A

and input port of current iput timing.

N/A

Clear each old status of

Auto-configuration and set the color

temperature to Cool.

Exit OSD

N/A

Exit

- 32 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Hot-Key Menu:(For AL1912 m only)

Outline:

The description for Hot-Key function :

Adjustment Reset

Range Value

0-100 50

Item

Operation

Icon

Description

Volume When the OSD is closed, press

Left or Right button will be Volume

Hot-Key Function

Volume of Audio adjustment. The

Audio will be Mute when volume=0.

OSD Message:

Outline:

The description for OSD Message :

Item

Description

Auto Config

Please Wait

Input Not

Supported

Cable Not

Connected

No Signal

When User Press Hot-Key “Auto”, will show this message, and the monitor do the auto config

function.

When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range,

will show this message. This message will be flying.

When the video cable is not connected, will show this message. This message will be flying.

When the video cable is connected, but the is no active signal input, will show this message, then

enter power saving.

- 33 -

Download from Www.Somanuals.com. All Manuals Search And Download.

LOGO:

When the monitor is power on, the LOGO will be showed in the center.

Item of Factory menu

Vendor may customize design and add adjustment items Factory menu as far as all required items are included.

1) Bright

Adjust Brightness and Contrast value to Max.

2) Auto Balance

Adjust each R, G, B contrast (gain) and offset.

Method of auto adjust is depends on hardware.

Adjusted value of R, G, B gain shall be used for initial value of Contrast in user menu.

All value shall be adjustable manually.

This function shall be located in 3. tag of Factory menu.

3) Factory color temp data edit

Following data for color temp shall be editable manually.

-color temp default preset No.

- 34 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Plug and play

Plug & play DDC2B feature

This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor

to inform the host system of its identity and, depending on the level of DDC used, communicate additional information

about its display capabilities. The communication channel is defined in two levels, DDC2B.

The DDC2Bis a bidirectional data channel based on the I²C protocol. The host can request EDID information over the

DDC2B channel.

THIS MONITOR WILL APPEAR TO BE NON-FUNCTIONAL IF THERE IS NO VIDEO INPUT SIGNAL. IN ORDER

FOR THIS MONITOR TO OPERATE PROPERLY, THERE MUST BE A VIDEO INPUT SIGNAL.

This monitor meets the Green monitor standards as set by the Video Electronics Standards Association(VESA) and/or

the United States Environmental Protection Agency (EPA) and The Swedish Confederation Employees (NUTEK). This

feature is designed to conserve electrical energy by reducing power consumption when there is no video-input signal

present. When there is no video input signal this monitor, following a time-out period, will automatically switch to an

OFF mode. This reduces the monitor’s internal power supply consumption. After the video input signal is restored, full

power is restored and the display is automatically redrawn. The appearance is similar to a “Screen Saver” feature

except the display is completely off. The display is restored by pressing a key on the keyboard, or clicking the mouse.

Using The Right Power Cord

The accessory power cord for the Northern American region is the wallet plug with NEMA 5-15 style and is UL listed

and CSA labeled. The voltage rating for the power cord shall be 125 volt AC.

Supplied with units intended for connection to power outlet of personal computer: Please use a cord set consisting of a

minimum No. 18 AWG, type SJT or SVT three conductors flexible cord. One end terminates with a grounding type

attachment plug, rated 10A, 250V,CEE-22 male configuration. The other end terminates with a molded-on type

connector body, rated 10A, 250V, having standard CEE-22 female configuration.

Please note that power supply card needs to use VDE 0602, 0625, 0821 approval power cord in European counties.

- 35 -

Download from Www.Somanuals.com. All Manuals Search And Download.

White Color Temperature

White color temperature is 4 preset as 9300, 7500,6500 and User,

Default value of user color should be user which is maximum setting for panel.

Target of color setting

Color

Color Coordinate

Tolerance Color Coordinate

Tolerance

Temp.

u’

0.189

0.198

v’

9300K

6500K

User

0.283

0.313

0.297

0.329

+0.03

0.446 　u’v’ < 0.01*

　u’v’ < 0.01*

0.469

*) TCO’0X A.2.6.1 requirement

User should follow “Microsoft Windows Color Quality Specification for Liquid Crystal Display OEM’s”.

(http://www.microsoft.com/hwdev/tech/color/ColorTest.asp)

Audio Technical specification (For AL1912 m only)

General Description:

Output power

1W + 1W maximum

Total harmonic distortion

: Less than 1 % (except speakers distortion)

: 0.5 Vrms for full output

Input signal sensitivity

Input impedance

47 Kohm +/- 5 %

Frequency response range

Difference of L and R output

: 20Hz – 20kHz (except speakers response)

Less than 2 dB

- 36 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Electrical characteristics (Tamb=25°)

Audio amplifier(USE Panasonic VP-7723A Audio Analyzor. )

Item

Audio Input

Freq.

Spec.

Comment

Min.

Typ.

Max.

Input Voltage(V)

0.5Vm

Input Current(m A)

Audio Voltage Gain

Frequency Response

500

800

500m Vrms 1KHz

6 d B Volume Max.,load 4 Ω

+10d B Volume Max.,load 4 Ω

500m Vrms 300Hz-20KH -10dB

Signal to Noise ratio

Total harmonic distortion

Cross talk

500m Vrms 1KHz

-40dB Volume Max.,load 4 Ω

except speakers distortion

-30dB Volume Max.,load 4 Ω

0.5W Volume Max.,load 4 Ω

Output Watt.

Volume Control

Analog

Speakers

Maximum power

Impedance

2 W per speaker(max)

4 ohm +/- 15 % @ 1kHz 1.0Hz

300 Hz – 20 kHz (S.P.L. – 10 dB)

Less than 5 % @ 0.125 W 1kHz

Frequency response range

Total harmonic distortion

- 37 -

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 3

Machine Disassembly and Replacement

Disassembly Procedure

Disassemble the base

1. Remove the neck cover.

2. Remove the four screws to release the hinge.

3. Remove the base

Disassemble the chassis

1. Remove the four screws to release the back cover.

2. Remove the two screws to release the EMI cover from chassis.

3. Remove the two screws from VGA connector.

4. Then take the chassis.

5. Remove the two screws from bezel.

6. To separate the chassis and bezel.

7. Remove the four screws from chassis and release the panel.

Download from Www.Somanuals.com. All Manuals Search And Download.

Disassemble the main board

1. Disassemble audio line from power board.

2. Disassemble two VL-VK lines from VL board.

3. Disassemble power line from VL board.

4. Disassemble FPC line from VL board.

5. Remove the one screw to release line from Chassis.

6. Remove the three screws from Chassis and release the main board.

Disassemble the power board

1. Disassemble two voltage lines from power board.

2. Remove the one screw to release line from Chassis.

3. Remove the three screws from Chassis.

4. Remove the two screws to release power board from Chassis.

5. Then take the power board from the chassia.

Disassemble the key board

1. Remove the one screw to release VK board from bezel.

2. Disassemble the two speaker lines from VK board.

Download from Www.Somanuals.com. All Manuals Search And Download.

Disassemble the speakers

1. Remove the two screws to release line and VK board from bezel.

2. Remove the two screws to release line and chassis from bezel.

3. Remove the four screws from bezel.

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 4

Troubleshooting

Main Procedure

Download from Www.Somanuals.com. All Manuals Search And Download.

Power Circuit and Backlights Troubleshooting

Download from Www.Somanuals.com. All Manuals Search And Download.

Performance Troubleshooting

Download from Www.Somanuals.com. All Manuals Search And Download.

Function Troubleshooting

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 5

Connector Information

Phonejack stereo

PIN1. right

PIN2. Left

PIN3. Gnd

: CEE22 typed connector

: Line-in receptacle

PHONEJACK STEREO

Video input Connector

Analog Video input Connector: 15pins mini D-Sub

Table 2.4.5. Pin assignment for D-sub connector

Separate Sync

RED VIDEO

PIN NO.

GREEN VIDEO

BLUE VIDEO

GROUND

RED GROUND

GREEN GROUND

BLUE GROUND

PC5V (+5V DDC)

CABLE DETECTION

GROUND

SDA

H.SYNC

V.SYNC

SCL

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 6

FRU (Field Replaceable Unit) list

This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1912 m. Refer to this

chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).

NOTE : Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available

on your regional web or channel(http://aicsl.acer.com.tw/spl/). For whatever reasons a part number change is

made, it will not be noted in the printed Service Guide. For ACER-AUTHORIZED CERVICE 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 local FRU list provided by your regional Acer office to order FRU parts repair and

service of customer machines.

NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on

how best to dispose it, or follow the rules set by your regional Acer office on how to return it.

Download from Www.Somanuals.com. All Manuals Search And Download.

Model: AL1912

Download from Www.Somanuals.com. All Manuals Search And Download.

Model:AL1912 m

Download from Www.Somanuals.com. All Manuals Search And Download.

Part list

No.

Photo

Part Name

Part No.

Hinge Cover

FAAR7721000

Base Assy

Rear Cover

Base

FAAR9913A00

FAAR9912000

FAAR9913000

Neck

FAAR7713000

ECAR9914A00

Main Shield

DA2P577V012

Download from Www.Somanuals.com. All Manuals Search And Download.

599: 453AAP30021

598: 453AAP30031

Power Board to MB cable

599: 453AAP30021

598: 453AAP30031

Inverter Board

Front Bezel

FAAR9911A00

599: DCO20162300

598: DCO20162500

Keyboard to MB Cable

Speaker-R

CG10021V900

CG19921V910

Speaker-L

Frame

ECAR9915A00

LCD (R)

AC6VF190010

Download from Www.Somanuals.com. All Manuals Search And Download.

Panel to MB cable

Function Board

DC020162600

599: 454AAPE0001

598: 454AAP30011

Download from Www.Somanuals.com. All Manuals Search And Download.

Chapter 7

Schematic Diagram

Download from Www.Somanuals.com. All Manuals Search And Download.

Aastra Telecom IP Phone 480I User Manual
Acer Laptop LUSFT02175 User Manual
AEG Freezer A72700GNW0 User Manual
Air King Fan 9120H User Manual
Amana Double Oven 8113P454 60 User Manual
American Standard Plumbing Product 71002XX User Manual
Asus Cell Phone T00C User Manual
Atlona Switch AT HDVS TX User Manual
Atlona Webcam AT SDI220 User Manual
Axis Communications Printer Axis NPS 550 User Manual