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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

Panel

Normal 19” panel

Fujitsu FLC48SXC8V-10

Normal 19” panel

Fujitsu FLC48SXC8V-10

Signal Interface

DSUB

DSUB

Sync Type for analog input

Separate / compatible /

Separate / compatible /

Color Temp user adjust

Support Support

DDC

DDC2B DDC2B

Speaker 0.5W+0.5W NO

Headphone Jack

NO

NO

Microphone Jack

No

No

USB Hub

Not support

Not support

Tilt / Swivel

Yes / No

Yes / No

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Содержание AL1912

Страница 1: ... 1 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 ...

Страница 2: ...ect 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...

Страница 3: ...ing 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 t...

Страница 4: ...ed 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 ...

Страница 5: ... 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 pur...

Страница 6: ...ay 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 ...

Страница 7: ...ATION 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...

Страница 8: ...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 Panel Normal 19 panel F...

Страница 9: ...ent 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 Power input 110Vac or 230Vac Ambient temperature 20 5 C 68 9 F Analog input mode 1280 x1024 60 Hz MEASUREMENT SYSTEMS The units of measure stated in...

Страница 10: ... HYDIS 300 typical Response time Tr Tf Ta 25 C 15 10ms typical Display color 16 2M Viewing angle HYDIS L R 85 85 U D 85 85 Luminance Uniformity 75 min 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 AL1912 m only Audio power 0 5Wrms 0 5Wrms 300Hz 10kHz S P L 10 dB AL1912 m only...

Страница 11: ...E12 200 Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x RGB x 1024 Display Area 376 32mm H x 301 056mm V Pixel Pitch 0 294mm H x 0 294mm V Display Color 16M Lamp Voltage 750 Vrms typ Lamp Current 7 mArms typ Weight 2500g Max Optical Specifications ...

Страница 12: ...nc 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 24KHz 80KHz Vertical Frequency 49Hz 75Hz ...

Страница 13: ...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...

Страница 14: ... 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 15 10 5 1 6 11 D sub con...

Страница 15: ...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 ...

Страница 16: ... 16 BLOCK DIAGRAM System Block Diagram MCU LVDS Signals MVPRL including ADC Scaling LVDS And OSD function ...

Страница 17: ...nt LABEL Component U1 74LVC14 CN1 D SVB 15 PIN U2 24LVC21 CN9 E T 4501 10 U4 MVPRL CN3 E T 6113 08 U6 M8064I CN301 E T 4501 11 U5 24LC16B CN302 E T 4501 03 U7 MAX810 CN7 E T DF14 30 U8 SI9435 U9 LM4838 U10 APL1085 3 3 CE U11 APL1117 2 5 VC ...

Страница 18: ... 18 Software flow chart ...

Страница 19: ...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 1 Auto Adjust Key Exit 4 MENU ENTER 2 Volume 5 LED 3 Volume 6 Power Key ...

Страница 20: ...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...

Страница 21: ...een front bezel and back cover shall be within specification Top and Bottom Left and Right Back cover Bezel concavity Back cover Bezel concavity 0 8mm A 1 3 mm 0 8mm A 1 3 mm Back Cover Hinge Cover concavity 0mm B 0 5mm ...

Страница 22: ... 22 Base Neck concavity 0mm C 0 6mm Top and Bottom Left and Right Back cover Bezel step Back cover Bezel step 0mm D 0 8 mm 0mm D 0 8 mm ...

Страница 23: ... 23 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 ...

Страница 24: ...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 ...

Страница 25: ... 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 Function 1 5Vaudio Audio power optional 2 GND Audio ground 3 GND Ground 4 GND Ground 5 Vbri Brightness cont...

Страница 26: ...cification AC DC Electrical specification Input Specification No Item Condition Min Typ Max Unit 1 Input Voltage 100 240 Vac 2 Input Frequency 47 63 Hz 3 Input Current 1 0 Arms Cold Start Vin 100Vrms 30 A0 P 4 Inrush Current Cold Start Vin 240Vrms 50 A0 P 5 Hold Up Time full load 100Vac input 10 ms 6 Turn on time Vin 110Vac 1 0 S 7 Efficiency Full load 70 8 Consumption Vin 240Vac no load 1 W ...

Страница 27: ...ith a 10uf Ecap 0 1uf Ceramic cap 2 Band width is limited within 20MHz 3 5Vdc 150mVp p 15Vinv 450mVp p Dynamic Load Regulation 50 100 or 100 50 load change of any DC output 50 duty of 1MHz min 5 Over Under Shoot Power line on off 5 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 act...

Страница 28: ...s Brightness lamp current in 6 5mA 250 300 Cd m Output Current Each connector Vbri 0 4V 3 3V 4 7 8 mA Frequency 40 50 60 KHz Lamp start voltage 0 1600 Vrms Striking Time 1 S Lamp Current Balance 0 3 mA Efficiency Vin 15V 80 Operating Life Time 50000 Hr The open lamp voltage is testes at output connector terminal SAFETY Leakage Current 0 25mA 100Vac Insulation Resistance more than 3M ohms while wit...

Страница 29: ...ED 5S Switch off 3 W Dark LED 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 AC Inlet Analog RGB Monitor rear side Data Cable 15 pin D sub female male Pin Assignment of 15 pin D sub 1 Red Video 9 5V FOR DDC 2 Green Video 10 Detect 3 Blue Video 11 Serial Data for ISP 4 Serial Clock for ISP...

Страница 30: ...st 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 ...

Страница 31: ...htness Value Focus Adjust Picture Phase to reduce Horizontal Line noise 0 100 Do Auto Config Clock Adjust picture Clock to reduce Vertical Line noise 0 100 Do Auto Config H Position Adjust the horizontal position of the picture 0 100 Do Auto Config V Position Adjust the verticalposition of the picture 0 100 Do Auto Config Warm N A Recall Warm Color Temperature from EEPROM N A Cool N A Recall Cool ...

Страница 32: ...display language to Italian N A 简体中文 N A Set OSD display language to Simplified Chinese N A 日本語 N A Set OSD display language to Japanese N A The Language will be set to English H Position Adjust the horizontal position of the OSD 0 100 50 V Position Adjust the verticalposition of the OSD 0 100 50 OSD Timeout Adjust the OSD timeout 10 120 10 Auto Config N A Auto Adjust the H V Position Focus and Cl...

Страница 33: ...OSD Message Item Description Auto Config Please Wait When User Press Hot Key Auto will show this message and the monitor do the auto config function Input Not Supported When the Hsync Frequency Vsync Frequency or Resolution is out of the monitor support range will show this message This message will be flying Cable Not Connected When the video cable is not connected will show this message This mes...

Страница 34: ...ess 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 manuall...

Страница 35: ...sent 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 restore...

Страница 36: ... 0 469 u v 0 01 User 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 Input signal sensitivity 0 5 Vrms for fu...

Страница 37: ...ms 300Hz 20KH z 10dB 10d B Volume Max load 4 Ω Signal to Noise ratio 500m Vrms 1KHz 40dB Volume Max load 4 Ω Total harmonic distortion 500m Vrms 1KHz 1 except speakers distortion Cross talk 500m Vrms 1KHz 30dB Volume Max load 4 Ω Output Watt 500m Vrms 1KHz 0 5W Volume Max load 4 Ω Volume Control Analog Speakers Maximum power 2 W per speaker max Impedance 4 ohm 15 1kHz 1 0Hz Frequency response rang...

Страница 38: ...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 ...

Страница 39: ...e 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 fro...

Страница 40: ...40 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 ...

Страница 41: ...41 Chapter 4 Troubleshooting Main Procedure ...

Страница 42: ...42 Power Circuit and Backlights Troubleshooting ...

Страница 43: ...43 Performance Troubleshooting ...

Страница 44: ...44 Function Troubleshooting ...

Страница 45: ...nnector 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 10 5 1 6 11 15 SCL J1 PHONEJACK STEREO 1 2 3 ...

Страница 46: ...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 T...

Страница 47: ...47 Model AL1912 ...

Страница 48: ...48 Model AL1912 m ...

Страница 49: ...49 Part list No Photo Part Name Part No 1 Hinge Cover FAAR7721000 2 Base Assy FAAR9913A00 3 Rear Cover FAAR9912000 4 Base FAAR9913000 6 Neck FAAR7713000 7 Main Shield ECAR9914A00 8 MB DA2P577V012 ...

Страница 50: ...21 598 453AAP30031 10 Inverter Board 599 453AAP30021 598 453AAP30031 11 Front Bezel FAAR9911A00 12 Keyboard to MB Cable 599 DCO20162300 598 DCO20162500 13 Speaker R CG10021V900 14 Speaker L CG19921V910 15 Frame ECAR9915A00 16 LCD R AC6VF190010 ...

Страница 51: ...51 17 Panel to MB cable DC020162600 18 Function Board 599 454AAPE0001 598 454AAP30011 ...

Страница 52: ...52 Chapter 7 Schematic Diagram ...

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