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Service Guide
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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/
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Copyright
Copyright © 2003 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced, transmitted, 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® 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.
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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.
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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.
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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 Chapter 6 FRU List
.............................................................................45
CONNECTOR INFORMATION ...................................................................................................................................... 45
................................................................................................ 46
FRU (Field Replaceable Unit) list................................................................................................................................... 46 PART LIST...................................................................................................................................................................... 49
Chapter 7 Schematic Diagram ....................................................................................52
SCHEMATIC DIAGRAM ................................................................................................................................................ 52
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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
Normal 19" panel Panel Signal Interface Sync Type for analog input Fujitsu FLC48SXC8V-10 DSUB Separate / compatible /
AL1912
Normal 19" panel Fujitsu FLC48SXC8V-10 DSUB Separate / compatible /
Support Color Temp user adjust
Support
DDC DDC2B Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel 0.5W+0.5W NO No Not support Yes / No
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DDC2B NO NO No Not support Yes / No
Height Adjust
Option
Option
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 : Fully functional : Measuring Equipment : 30 minutes 5 seconds 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: User red/white balance, Green/white balance and Blue/white balance control : Power input: Ambient temperature: Analog input mode: In the center (unless otherwise specified ) 110Vac or 230Vac 20 ± 5 °C ( 68 ± 9 ° F) 1280 x1024 /60 Hz Maximum (unless otherwise specified ) Typical (unless otherwise specified ) 225 lux 50 cm in front of LCD panel
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: 19 " active matrix color TFT LCD 1). Fujitsu FLC48SXC8V-10
Display size: Display mode:
376.32mm (H) × 301.056mm(V) VGA VGA SVGA XGA SXGA 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) 1280 × 1024 (60/70/75 Hz) standard resolution
Pixel pitch: Display Dot: Pixel Clock: Contrast ratio: = 0° Brightness: Response time (Tr/Tf): Display color: Viewing angle:
0.294mm(H) × 0.294mm(V) 1280 x (RGB) × 1024 25.2 135.0MHz HYDIS 700:1 (typical) HYDIS:300 (typical) 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) Audio power: Front control: Interface frequency Horizontal Frequency Vertical Frequency Plug & play: Power Input voltage: 24KHz --80KHz 49Hz ------75Hz Support VESA DDC2B functions Single phase, 50/60HZ, 100 VAC to 240VAC ±10%
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0.5Wrms + 0.5Wrms (300Hz 10kHz (S.P.L. 10 dB))(AL1912 m only) power on/off with LED select adjustment (+,-)
Total output power:
60 Watt max.
LCD Panel Specification
LCD Panel Model (Hydis LT17E12-200)
· · · · · · · · · ·
Display Type Resolution Display Dot Display Area Pixel Pitch Display Color Lamp Voltage Lamp Current Weight Optical Specifications
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 750 Vrms (typ) 7 mArms (typ) 2500g (Max)
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Panel Relative Humidity
Input Signals
Video input
· · · · ·
Sync input
Type Input Impedance Polarity Amplitude Display Color
Analog R, G, B. 75 ohm +/- 2% Positive 0 - 0.7 +/- 0.05 Vp same as LCD panel
· ·
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
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Supported Timing
FH(KHZ) TIMING FV(HZ) 640x350 VGA-350 640x400 NEC PC9801 640x400 VGA-GRAPH 640x400 NEC PC9821 640X480 VESA-PAL 640x480 VGA-480 640x480 APPLE MAC-480 640x480 VESA-480-72Hz 640x480 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 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 (75Hz) 1280x1024 VESA-1024-60Hz 1280x1024 VESA-1024-75Hz 31.469 70.087 24.83 56.42 31.469 70.087 31.5 70.15 31.469 50.030 31.469 59.94 35.00 66.67 37.861 72.809 37.5 75 31.469 70.087 49.725 74.55 35.156 56.25 37.879 60.317 48.077 72.188 46.875 75 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 60.00 70.00 70.00 75.00 75.00 64 60 80 75 POLARITY + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + (DOT/LINE) 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 1800 1000 1800 1000 1800 1000 1688 1066 1688 1066 (DOT/LINE) 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 WIDTH (DOT/LINE) 96 2 64 8 96 2 64 2 96 2 96 2 64 3 40 3 64 3 108 2 64 3 72 2 128 4 120 6 80 3 136 6 176 4 136 6 96 3 96 3 96 3 96 3 128 2 112 3 112 3 112 3 112 3 144 3 PORCH (DOT/LINE) 16 37 64 7 16 12 16 13 16 62 16 10 64 3 16 1 16 1 18 12 32 1 24 1 40 1 56 37 16 1 24 3 16 8 24 3 16 1 32 3 40 13 32 1 64 2 96 1 96 1 96 1 48 1 16 1 PORCH FOREQ.(MHZ) (DOT/LINE) 48 25.175 60 80 21.05 25 48 25.175 35 80 25.197 34 48 25.175 85 48 25.175 33 96 30.24 39 120 31.5 20 120 31.5 16 54 28.322 35 224 57.2832 39 128 36 22 88 40 23 64 50 23 160 49.5 21 160 65 29 112 71.664 36 144 75 29 176 78.75 28 176 80 29 192 80 32 200 94.499 44 256 108.00 32 312 108.00 36 312 126.00 36 312 135.00 36 248 108 38 248 135 38 SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL
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. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Separate Sync RED VIDEO GREEN VIDEO BLUE VIDEO GROUND 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)
5 10 15
1 6 11
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. The Adapter will provide thr 12V DC-power to inverter/ power board.
Power board
(include: AC/DC,inverter)
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BLOCK DIAGRAM
System Block Diagram
LVDS Signals
MCU
MVPRL including ADC, Scaling LVDS And OSD function
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Monitor board layout
LABEL
U1 U2 U4 U6 U5 U7 U8 U9 U10 U11
Component
74LVC14 24LVC21 MVPRL M8064I 24LC16B MAX810 SI9435 LM4838 APL1085-3.3 CE APL1117-2.5 VC
LABEL
CN1 CN9 CN3 CN301 CN302 CN7
Component
D-SVB 15 PIN E&T 4501-10 E&T 6113-08 E&T 4501-11 E&T 4501-03 E&T DF14-30
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Software flow chart
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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 1 2 3 Auto Adjust Key/Exit / Volume 4 5 6 MENU/ENTER LED / Power Key
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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.
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The step between front bezel and back cover shall be within specification.
Top and Bottom Back cover & Bezel concavity 0.8mm A 1.3 mm Left and Right Back cover & Bezel concavity 0.8mm A 1.3 mm
Back Cover & Hinge Cover concavity 0mm B 0.5mm
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Base & Neck concavity 0mm C 0.6mm
Top and Bottom Back cover & Bezel step 0mm D 0.8 mm
Left and Right Back cover & Bezel step 0mm D 0.8 mm
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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.
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Tilt Base Rotation
Tilt up 15 ± 2°/ down 5 ±2°
Plastic Material
For TCO99 Front Bezel PC+ABS Back Cover PC+ABS The Others For MPRII Front Bezel ABS 94V-0 Back Cover ABS 94V-0 The Others ABS 94HB ABS 94HB
GAP Spec.
Gap between panel with bezel is 0 mm < gap < 1.2 mm
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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 ±10Vac 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. 1 2 3 4 5 6 7 8 9 10 Function +5Vaudio GND GND GND Vbri ---Ven +5Vdc +5Vdc +5Vdc Audio power (optional). Audio ground Ground Ground Brightness control from logical board (0V to 3.3V) ----Inverter enable signal from logical board (high active , >3V) +5Vdc supply for logical board +5Vdc supply for logical board +5Vdc supply for logical board
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Function
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. 1 2 Function Cth Ctl Comment VBLH(High voltage) VBLL(Low voltage)
Electrical Specification:
AC-DC Electrical specification
Input Specification No 1 2 3 4 5 6 7 8 Item Input Voltage Input Frequency Input Current Inrush Current Hold Up Time Turn on time Efficiency Consumption Condition ------------Cold Start @Vin=100Vrms Cold Start @Vin=240Vrms @full load & 100Vac input Vin =110Vac Full load Vin=240Vac,@ no load 10 ------Min. 100 47 ----Typ. ------------1.0 70 --Max. 240 63 1.0 30 50 ------1 Unit Vac Hz Arms A0-P A0-P ms S % W
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AC-DC Output Specification Tolerance Output Voltage +5Vdc +15Vinv +5Vaudio Ripple --+5 /-3 % +35/-5 % ±5% 1. Measured at DC output terminals which are paralleled with a 10uf Ecap &0.1uf Ceramic cap. 2.Band width is limited within 20MHz. 50~100% or 100~50% Dynamic Load Regulation load change of any DC output @50% duty of 1MHz (min.) Over / Under Shoot @ Power line on/off --±5% ----±5% --Output Current Voltage Tolerance MIN 0.05A 0A 0A --MAX 1.5A 2A 0.6A 1% 4.85~5.25V dc 20~14.3Vdc 4.75~5.25Vdc +5Vdc:50mVp-p +15Vinv:150mVp-p +5Vdc:150mVp-p +15Vinv:450mVp-p
Noise
---
3%
*+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
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Inverter Electrical Specification:
For Fujitsu FLC488SC8V-10 (AL1912 m)
Condition Input Voltage Input Current Backlight ON/OFF Control ----ON OFF Brightness Adjust Output Voltage Brightness Output Current(Each connector) Frequency Lamp start voltage Striking Time Lamp Current Balance Efficiency Operating Life Time Min. Luminance / Max. Luminance Vin=15V, Iout=6.5mA lamp current in 6.5mA Vbri=0.4V~3.3V --@0 ----Vin=15V ------50000 --250 4 40 1600 750 300 7 50 --1 ±0.3 80 --8 60 ------------Vrms Cd/m² mA KHz Vrms S mA % Hr --Min. ----Typ. 15 1.5 3.3 0 30% --Max. ----Unit V A V V ---
*.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
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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 Power-On Power-off Switch-off SYNC. On means: Normal operation SYNC. Off means: H sync. F < 10KHz duty cycle > 25% V sync. F < 10Hz duty cycle > 25% H-Sync. on off V-Sync. on off Video active blanked Pw-cons. < 60W <3W <3W Indicator Green LED Orange LED Dark LED Rec. time* -< 5S
CONNECTORS / CONTROLS
Connectors Power Analog RGB 1 2 3 4 5 6 7 8 Audio Red Video Green Video Blue Video Serial Clock for ISP Ground Red Ground Green Ground Blue Ground : Monitor rear side -PC I/P for PC : : 3.5mm Stereo female : Monitor rear side : Monitor rear side / Data Cable 9 10 11 12 13 14 15 : AC Inlet : 15-pin D-sub female / male
Pin Assignment of 15-pin D-sub: +5V FOR DDC Detect Serial Data for ISP Serial Data for DDC H-Sync. V-Sync. Serial Clock for DDC
Monitor Control Keys
KEY : Power , Menu , Adjust +/- , Vol +/-, Auto
Position Of Controls
Position of all switches Position of LED : Bottom side of front bezel : Bottom side of front bezel
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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.
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Main OSD Menu:
Outline:
The description for control function :
Main Menu Icon Sub Menu Item Contrast Sub Menu Icon Contrast from Digital-register. Description Adjustment Range 0-100 Recall Cool Contrast Value Brightness Backlight Adjustment 0-100 Recall Cool Brightness Value Focus Adjust Picture Phase to reduce Horizontal-Line noise Clock Adjust picture Clock to reduce Vertical-Line noise. H. Position Adjust the horizontal position of the 0-100 picture. V. Position Adjust the verticalposition of the picture. Warm N/A Recall Warm Color Temperature from EEPROM. Cool N/A Recall Cool Color Temperature from N/A EEPROM.
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Reset Value
0-100
Do Auto Config
0-100
Do Auto Config
Do Auto Config
0-100
Do Auto Config
N/A
The Color Temperature will be set to Cool.
User / Red
Red Gain from Digital-register.
0-100
100
User / Green
Green Gain Digital-register.
0-100
100
User / Blue
Blue Gain from Digital-register.
0-100
100
English
N/A
Set OSD display language to English.
N/A
The Language will be set to English.
N/A
Set OSD display language to Tranditional Chinese.
N/A
Deutsch
N/A
Set OSD display language to German.
N/A
Français
N/A
Set OSD display language to French.
N/A
Español Italiano
N/A N/A N/A
Set OSD display language to Spain. N/A Set OSD display language to Italian. N/A Set OSD display language to Simplified Chinese. N/A
N/A
Set OSD display language to Japanese.
N/A
H. Position
Adjust the horizontal position of the 0-100 OSD.
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 N/A and Clock of picture.
N/A
Information
N/A
Show the resolution, H/V frequency N/A and input port of current iput timing.
N/A
Reset
N/A
Clear each old status of Auto-configuration and set the color temperature to Cool.
N/A
N/A
Exit
N/A
Exit OSD
N/A
N/A
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Hot-Key Menu:(For AL1912 m only)
Outline:
The description for Hot-Key function :
Item Volume Operation When the OSD is closed, press Left or Right button will be Volume Hot-Key Function Icon Adjustment Description Volume of Audio adjustment. The Audio will be Mute when volume=0. Range 0-100 Reset Value 50
OSD Message:
Outline:
The description for OSD Message :
Item Auto Config Please Wait Input Not Supported Cable Not Connected No Signal When the video cable is connected, but the is no active signal input, will show this message, then enter power saving. Description 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.
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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.
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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.
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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 Temp. x 9300K 6500K User 0.283 0.313 y 0.297 0.329 +0.03 +0.03 u' 0.189 0.198 v' 0.446 0.469 u'v' < 0.01* u'v' < 0.01* Color Coordinate Tolerance Color Coordinate Tolerance
*) 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 Total harmonic distortion Input signal sensitivity Input impedance Frequency response range Difference of L and R output : 1W + 1W maximum : Less than 1 % (except speakers distortion) : 0.5 Vrms for full output : 47 Kohm +/- 5 %
: 20Hz 20kHz (except speakers response) : Less than 2 dB
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Electrical characteristics (Tamb=25°)
Audio amplifier(USE Panasonic VP-7723A Audio Analyzor. ) Item Audio Input Freq. Min. Input Voltage(V) Spec. Typ. 0.5Vm s Input Current(m A) Audio Voltage Gain Frequency Response 500m Vrms 1KHz 500 800 6dB Volume Max.,load 4 Max. Comment
500m Vrms 300Hz-20KH -10dB z
+10d B Volume Max.,load 4
Signal to Noise ratio Total harmonic distortion Cross talk Output Watt. Volume Control
500m Vrms 1KHz 500m Vrms 1KHz 500m Vrms 1KHz 500m Vrms 1KHz
-
-
-40dB Volume Max.,load 4 1% except speakers distortion
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-30dB Volume Max.,load 4 0.5W Volume Max.,load 4 Analog
Speakers
Maximum power Impedance Frequency response range Total harmonic distortion : : : : 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
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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.
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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.
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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.
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Chapter 4
Troubleshooting
Main Procedure
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Power Circuit and Backlights Troubleshooting
42
Performance Troubleshooting
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Function Troubleshooting
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Chapter 5
Connector Information
Phonejack stereo
PIN1. right PIN2. Left PIN3. Gnd : Line-in receptacle
J1
: CEE22 typed connector
1 2 3
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
PIN NO.
5 10 15
1 6 11
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
RED VIDEO GREEN VIDEO BLUE VIDEO GROUND GROUND RED GROUND GREEN GROUND BLUE GROUND PC5V (+5V DDC) CABLE DETECTION GROUND SDA H.SYNC V.SYNC SCL
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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.
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Model: AL1912
47
Model:AL1912 m
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Part list No.
1
Photo
Part Name
Hinge Cover
Part No.
FAAR7721000
2
Base Assy
FAAR9913A00
3
Rear Cover
FAAR9912000
4
Base
FAAR9913000
6
Neck
FAAR7713000
7
Main Shield
ECAR9914A00
8
MB
DA2P577V012
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9
Power Board to MB cable
599: 453AAP30021 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
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17
Panel to MB cable
DC020162600
18
Function Board
599: 454AAPE0001 598: 454AAP30011
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Chapter 7
Schematic Diagram
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53
54
55
56
57
58
59
60
61
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