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Acer AL1916 Service Manual

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Acer AL1916p
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 -

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   Summary of Contents for Acer AL1916

  • Page 1 Acer AL1916p 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 -...
  • Page 2 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.
  • Page 3 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.
  • Page 4 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.
  • Page 5 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.
  • Page 6: Special Notes On Lcd Monitors

    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.
  • Page 7: Table Of Contents

    Table of contents Chapter 1 Monitor Feature …………………………………………………………………...………..8 INTRODUCTION...8 ELECTRICAL REQUIREMEENTS...9 MONITOR BLOCK DIAGRAM ... 21 BLOCK DIAGRAM ... 24 MONITOR BOARD LAYOUT ... 25 SOFTWARE FLOW CHART ... 27 GENERAL INSTRUCTIONS ... 28 SYSTEM INSTALLATION ... 29 POWER/INVERTOR BOARD ... 34 ELECTRICAL SPECIFICATION...
  • Page 8: Chapter 1 Monitor Feature

    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 AL1916 Panel Signal Interface...
  • Page 9: Electrical Requiremeents

    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 : Control settings User brightness control : User contrast control: User red/white balance, Green/white balance and...
  • Page 10 Display Dot: Pixel Clock: θ Contrast ratio: = 0˚ Brightness: Response time (Tr/Tf): Display color: Viewing angle(CR>10): Luminance Uniformity: 1280 x (RGB) × 1024 25.2 – 135.0MHz LG: 500:1 (typical) Samsung: 700:1 (typical) LG: 250 (typical) Samsung: 300 (typical) Ta=25°C, 2/10ms (typical) Samsung Ta=25°C, 1.7/6.3ms (typical) Ta=25°C, 5.6/2.4ms (typical)
  • Page 11: Lcd Panel Specification

    LCD Panel Specification LCD Panel Model AU-M190EN04(V5) • Display Type • Resolution • Display Dot • Display Area • Pixel Pitch • Display Color • Lamp Voltage • Lamp Current • Weight • Optical Specifications The following items are measured under stable conditions. The optical characteristics should be measured in a dark room or equivalent state with the methods shown in Note(4).
  • Page 12 • Lamp Voltage • Lamp Current • Weight • Optical Specifications The following items are measured under stable conditions. The optical characteristics should be measured in a dark room or equivalent state with the methods shown in Note(4). Measuring equipment : TOPCON BM-5A, BM-7, PHOTO RESEARCH PR650 *Ta =25 ±...
  • Page 13 Note 2) Definition of Contrast Ratio (CR): Ratio of gray max(Gmax),gray min(Gmin) at the center point of panel. Luminance with all pixels white (Gmax)  Note 3) Definition of Response time: Sum of T Note 4) After stabilizing and leaving the panel alone at a given temperature for 30 min, the measurement should be executed .Measurement should be executed n a stable, windless ,and dark room.30 min after lighting the back-light.
  • Page 14 Optical characteristics measurement setup Notes 5) Definition of Luminance of White : measure the luminance of white at center point. Notes 6)Definition of 9 points brightness uniformity (Measuring points: Refer to the Note 5)  X 100% Samsumg  X 100% Bmax: Maximum brightness Bmin: Minimum brightness Notes 7) Definition of Flicker level...
  • Page 15 ♦ Test Point :Center point of the display area Note 8) Definition of Crosstalk (Refer to the VESA STD) The calculation for shadowing is made from the 2 luminance measurements Gbkg and Lsh, as follows: Lmax -Lmin =  x100 % Where Lmax is the larger value of Gbkg or Lsh , and Lmin is the smaller of the two.
  • Page 16: Input Signals

    opposite boxes, A&C or B&D. Btgt will only be displayed for aligning the LMD. It will be turned off for the actual measurement. ♦ The target box point (Btgt) will be measured with the source box (Bsrc) turned on then off. (Btgt is for alignment purpose only) Display the background only at level Gbkg.
  • Page 17 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 - 17 -...
  • Page 18: Supported Timing

    Supported Timing FH(KHZ) SYNC TIMING FV(HZ) POLARITY 640x350 31.469 VGA-350 70.087 – 640x400 24.83 – NEC PC9801 56.42 – 640x400 31.469 – VGA-GRAPH 70.087 640x400 31.5 – NEC PC9821 70.15 – 640X480 31.469 VESA-PAL 50.030 640x480 31.469 – VGA-480 59.94 –...
  • Page 19 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.
  • Page 20 D-sub connector Digital Video Input Connector : DVI – D (T.B.D) Table 2.4.6 Pin assignment for DVI – D Connector: Pin – Assignment of DVI –D connector : TX2- TX2+ Shield (TX2 / TX4) DDC-Serial Clock DDC-Serial Data No Connect *) In case, the power of the PC unit is switched off and the power of the monitor is switched on, no voltage may occur at pin 14.
  • Page 21: Monitor Block Diagram

    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.
  • Page 22: Block Diagram

    BLOCK DIAGRAM System Block Diagram - 22 -...
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  • Page 25: Monitor Board Layout

    Monitor board layout LABEL Component 24LC21A 24LC21A TSU56AJ or TSU16AJ MX10E8050IAQC MAX810 24LC16B APM4461 APL1085-33CE APL1117-1.8V LM4838 LABEL Component D-SVB 15 PIN DVI-D 24 PIN E&T 96113-0803 P-TWO AFN300-N2G1Z 30P E&T 4500-10 E&T 4500-03 E&T 96113-1103 - 25 -...
  • Page 26 LABEL Component SN74LVC14 NT68F633 24LC16B NT68521 APL1085-33CE APL1117-2.5 SI9435 U501 LM4838 LABEL Component D-SVB 15 PIN E&T 96113-0803 E&T 4500-10 CN301 E&T 96113-1103 CN302 E&T 4500-03 P-TWO AFN300-N2G1Z - 26 -...
  • Page 27: Software Flow Chart

    Software flow chart - 27 -...
  • Page 28: General Instructions

    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.
  • Page 29: System Installation

    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.
  • Page 30: Gap Spec

    Gap Spec. 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 Back Cover & Hinge Cover concavity 0mm ≤ B ≤ 0.5mm Left and Right Back cover &...
  • Page 31 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 - 31 -...
  • Page 32 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. - 32 -...
  • Page 33 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 <...
  • Page 34: Power/invertor Board

    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 Frequency: 47 ~ 63Hz Input power consumption: Less than 1.2W @ minimum load Total output power: 55Wmax Inverter brightness adjustment: Burst mode...
  • Page 35: Electrical Specification

    2.Inverter-side connecter : SM02B-BHSS-1-TB(JST) PIN NO. Function Electrical Specification: AC-DC Electrical specification 3.4.1.1 Input Specification Item Input Voltage Input requency Input Current Inrush Current Hold Up Time Turn on time Efficiency Consumption / SM02(8.0)B-BHS-1(JST) or equivalent. Comment VBLH(High voltage) VBLL(Low voltage) Condition ----- -----...
  • Page 36 3.4.1.2 AC-DC Output Specification Tolerance Output oltage +5Vdc +5 /-3 % +15Vinv +35/-5 % ±5% +5Vaudio Measured at DC output terminals which are Ripple paralleled with a 10uf Ecap &0.1uf Ceramic cap. Noise 2.Band width is limited within 20MHz 50~100% or 100~50% Dynamic Load load change of any DC Regulation...
  • Page 37: Safety

    Striking Time Lamp Current Balance Efficiency Operating Life Time *.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 Vin=15V 50000 - 37 -...
  • Page 38: Power Consumption

    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.
  • Page 39: Chapter 2 Operating Instruction

    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 green when monitor is on; be amber when in power saving mode. 3.
  • Page 40: Main Osd Menu

    Main OSD Menu: Outline: The description for control function : Main Menu Sub Menu Sub Menu Icon Item Icon Contrast Brightness Focus Clock H. Position V. Position Warm Cool User / Red User / Green User / Blue (option) Description Contrast from Digital-register.
  • Page 41 English Set OSD display language to English. Set OSD display language to 繁體中文 Tranditional Chinese. Deutsch Set OSD display language to German. Français Set OSD display language to French. Español Set OSD display language to Spain. N/A Italiano Set OSD display language to Italian. N/A 简体中文...
  • Page 42: Osd Message

    OSD Message: Outline: The description for OSD Message : Item Description Auto Config When User Press Hot-Key “Auto”, will show this message, and the monitor do the auto config Please Wait function. Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, Supported will show this message.
  • Page 43 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.
  • Page 44: Plug And Play

    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.
  • Page 45: White Color Temperature

    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 Temp. 9300K 0.283 6500K 0.313 User *) TCO’0X A.2.6.1 requirement User should follow “Microsoft Windows Color Quality Specification for Liquid Crystal Display OEM’s”.
  • Page 46 Electrical characteristics (Tamb=25°) Audio amplifier(USE Panasonic VP-7723A Audio Analyzor. ) Item Audio Input Input Voltage(V) Input Current(m A) Audio Voltage Gain 500m Vrms 1KHz Frequency Response 500m Vrms 300Hz-20KH Signal to Noise ratio 500m Vrms 1KHz Total harmonic distortion 500m Vrms 1KHz Cross talk 500m Vrms 1KHz Output Watt.
  • Page 47: Chapter 3 Machine Disassembly And Replacement

    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.
  • Page 48 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.
  • Page 49 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.
  • Page 50: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting Main Procedure...
  • Page 51: Troubleshooting

    Power Circuit and Backlights Troubleshooting...
  • Page 52 Performance Troubleshooting...
  • Page 53 Function Troubleshooting...
  • Page 54 Connector Information Phonejack stereo PIN1. right : CEE22 typed connector PIN2. Left PIN3. Gnd Video input Connector Analog Video input Connector: 15pins mini D-Sub Table 2.4.5. Pin assignment for D-sub connector : Line-in receptacle PHONEJACK STEREO PIN NO. Chapter 5 Separate Sync RED VIDEO GREEN VIDEO...
  • Page 55: Chapter 5 Connector Information

    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.
  • Page 57: Part List

    Part list Photo Part Name Hinge Cover Base Assy Rear Cover Base Neck Part No. FAAA6932000 FAAA691D000 FAAA6914000 FAAA691C000 FAAA6921000...
  • Page 58: Connector Information

    Main Shield AU:461ACQ30011 SAMSUNG:461ACQ30001 Power Board to MB AU: 453AC530051 cable Samsung: 453AC530051 AU: 453AC530051 Inverter Board Samsung: 453AC530051 Front Bezel Keyboard to MB Cable ECAR9914A00 FAAA6911000 DCO20191700...
  • Page 59: Chapter 6 Fru List

    Frame LCD (R) Panel to MB cable Function Board ECAR9915A00 AC6VA1901R0 AC6VT1901R5 NBX30001271 NBX30001600 454AC830001...
  • Page 60: Chapter 7 Schematic Diagram

    Schematic Diagram Chapter 7...
  • Page 62 VDDC VDDC VDDC VDDC VDDP VDDP VDDP VDDP VDDP VDDP VDDP AVDD_ AVDD_ AVDD_ AVDD_ AVDD AVDD GNDC GNDC GNDC GNDC GNDP GNDP GNDP GNDP GNDP GNDP GNDP GNDP GNDP AVSS_ AVSS_ AVSS_ AVSS_ AVSS AVSS...
  • Page 66 SENSE...

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