Acer AL2416 AL2416W Service Guide
Acer AL2416 Manual
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- Acer AL2416 | AL2416W Service Guide - Page 1
Acer AL2416W 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 - - Acer AL2416 | AL2416W Service Guide - Page 2
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 - Acer AL2416 | AL2416W Service Guide - Page 3
are used in this manual: Screen messages Denotes actual messages that appear on screen Note Gives bits and pieces supports, please read the following general information. 1. this Service Guide provides you with all technical information relating to the BASICCONFIGURATION decided for Acer - Acer AL2416 | AL2416W Service Guide - Page 4
and used in accordance with the instructions, may cause harmful interference to by turning the equipment off and on, the user is encouraged to try to correct the interference monitor to rain or moisture. Dangerously high voltages are present inside the monitor. Do not open the cabinet. Refer servicing - Acer AL2416 | AL2416W Service Guide - Page 5
radiator or heat register. Do not place the monitor in a bookcase or cabinet unless proper ventilation is provided. z The monitor should be operated only from the type of power source indicated on the label. If you are not sure of the type of power supplied to your home, consult your dealer or local - Acer AL2416 | AL2416W Service Guide - Page 6
SPECIAL NOTES ON LCD MONITORS The following symptoms are normal with LCD monitor and do not indicate a problem. NOTES z Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears. z - Acer AL2416 | AL2416W Service Guide - Page 7
Table of contents Chapter 1 Monitor Feature 8 INTRODUCTION...8 ELECTRICAL REQUIREMEENTS...9 MONITOR BLOCK DIAGRAM ...19 BLOCK DIAGRAM ...20 MONITOR BOARD LAYOUT ...21 SOFTWARE FLOW CHART ...22 GENERAL INSTRUCTIONS ...23 SYSTEM INSTALLATION ...24 POWER/INVERTOR BOARD ...29 SAFETY ...32 Chapter 2 - Acer AL2416 | AL2416W Service Guide - Page 8
requirements for the 24" 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 - Acer AL2416 | AL2416W Service Guide - Page 9
distance : 50 cm in front of LCD panel Warrn up time All specifications : 30 monitor under test. Minolta CA100 photometer, or equivalent Control settings User brightness control : Maximum (unless otherwise specified ) User contrast control: Typical (unless otherwise specified ) User - Acer AL2416 | AL2416W Service Guide - Page 10
LCD Panel Specification LCD Panel Model (LTM240M1-L01-L00) - 10 - - Acer AL2416 | AL2416W Service Guide - Page 11
of panel. CR= Luminance with all pixels white (Gmax Luminance with all pixels black (Gmin) Note 3) Definition of Response time: Sum of TR , TF Note min after lighting the back-light. This should be measured in the center of screen. Dual lamp current :13.0mA(6.5mA x2)(Refer to the note(1) in the - Acer AL2416 | AL2416W Service Guide - Page 12
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) AU BUNI= Samsumg Bmin X 100% Bmax - 12 - - Acer AL2416 | AL2416W Service Guide - Page 13
BUNI= Bmax-Bmin X 100% Bmax Bmax: Maximum brightness Bmin: Minimum brightness Notes 7) Definition of Flicker level Flicker Voltage pp F x 100 % LMD Voltage dc ♦ One maximum value of three estimated values. ♦ For this test ,an LMD(Light Measurement Device)is needed with adequate response time - Acer AL2416 | AL2416W Service Guide - Page 14
CT x100 % Lmin Where Lmax is the larger value of Gbkg or Lsh , and Lmin is the smaller of the two. ♦ To determine background and foreground levels (colors),first set the background to any gray scale or color level suitable for shadowing determination.(Note that it may take several iterations - Acer AL2416 | AL2416W Service Guide - Page 15
B. 75 ohm +/- 2% Positive 0 - 0.7 +/- 0.05 Vp same as LCD panel separate horizontal and vertical sync, or composite sync which are TTL compatible positive frequency range is generalized by supported timing. If the entered mode does not match the supported timing the display optimization will not - Acer AL2416 | AL2416W Service Guide - Page 16
Supported Timing TIMING 640x350 VGA-350 640x400 NEC /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 64 1 136 middle position but cannot be expanded to full screen on vertical direction - 16 - - Acer AL2416 | AL2416W Service Guide - Page 17
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 - Acer AL2416 | AL2416W Service Guide - Page 18
13 NC 21 NC 6 DDC-Serial Clock 14 +5V power *) 22 Shield (TXC) 7 DDC-Serial Data 15 Ground (+5V) 23 TXC+ 8 No Connect 16 Hot plug detect 24 TXC- *) 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 - Acer AL2416 | AL2416W Service Guide - Page 19
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 - Acer AL2416 | AL2416W Service Guide - Page 20
BLOCK DIAGRAM System Block Diagram - 20 - - Acer AL2416 | AL2416W Service Guide - Page 21
Monitor board layout LABEL U2 U5 U8 U9 U10 U11 U13 XU1 Component EEPROM SOIC-8 24C02 GM1601 HY5DU283222AF AIC 1084-33V APL1117-1.8V APL1117-25V APL5883- - Acer AL2416 | AL2416W Service Guide - Page 22
Software flow chart - 22 - - Acer AL2416 | AL2416W Service Guide - Page 23
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. z The power cord should be connected. z Connect the video cable from - Acer AL2416 | AL2416W Service Guide - Page 24
z Connect one end of the signal cable to the LCD Monitor's VGA port. z Connect the other end of the signal cable to the VGA port on your PC. z Make sure connections are secure. Connecting the AC Power z Connect the power cord to the LCD Monitor. z Connect the power cord to an AC power source. - 24 - - Acer AL2416 | AL2416W Service Guide - Page 25
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 Left and Right Back cover & Bezel concavity 0.8mm ≤ A ≤ 1.3 mm Back Cover & Hinge Cover concavity 0mm ≤ B ≤ 0.5mm - 25 - - Acer AL2416 | AL2416W Service Guide - Page 26
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 - 26 - - Acer AL2416 | AL2416W Service Guide - Page 27
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. - 27 - - Acer AL2416 | AL2416W Service Guide - Page 28
MPRII Front Bezel Back Cover The Others PC+ABS PC+ABS ABS 94HB ABS 94V-0 ABS 94V-0 ABS 94HB GAP Spec. Gap between panel with bezel is 0 mm < gap < 1.5 mm Swivel title noise spec. When adjust the monitor angle, the range should be limited -5º~ +15º and it should not have any noise. - 28 - - Acer AL2416 | AL2416W Service Guide - Page 29
the performance and characteristic of power/inverter board. It supplies the following outputs : 1). 5Vdc: Logic power. 2). 24Vinv: Inverter power. Features Input Voltage: 100 ~ 240 ±10％Vac Input Frequency: 47 ~ 63Hz Total output power: 110Wmax Inverter brightness adjustment: Burst mode Protection - Acer AL2416 | AL2416W Service Guide - Page 30
Function 1 +5Vaudio Audio power (optional). 2 GND Audio ground 3 GND Ground 4 GND Ground 5 Vbri Brightness control from logical board (0V to 3.3V) 6 ---- ----- 7 Ven Inverter enable signal from logical board (high active , >3V) 8 +5Vdc +5Vdc supply for logical board 9 +5Vdc - Acer AL2416 | AL2416W Service Guide - Page 31
must be acted on both outputs 2) OPP: Should be protected when output power consumption is within 130W . 3.4.1.4 Overshoot: +10% or less Full Load INVERTER BOARD DESIGNED FOR SAMSUNG LTM240M!-L01 MIN. TYP. INPUT VOLTAGE 22.8V 24V INPUT CURRENT -------- 3.3A Normal BACKLIGHT VOLTAGE - Acer AL2416 | AL2416W Service Guide - Page 32
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 - Acer AL2416 | AL2416W Service Guide - Page 33
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 - 33 - - Acer AL2416 | AL2416W Service Guide - Page 34
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. Function select. 4. Adjust increase. 5. Adjust decrease. 6. Auto - Acer AL2416 | AL2416W Service Guide - Page 35
Menu Description Icon Item Icon Contrast Contrast from Digital-register. Adjustment Range 0-100 Brightness Backlight Adjustment 0-100 Focus Clock H. Position V. Position Warm N/A Cool N/A User / Red Adjust Picture Phase to reduce 0-100 Horizontal-Line noise Adjust picture Clock - Acer AL2416 | AL2416W Service Guide - Page 36
Change Analog and Digital source change.(option) N/A The Language will be set to English. 50 50 10 N/A N/A Information N/A Show the resolution, H/V frequency N/A N/A and input port of current iput timing. Reset N/A Clear each old status of N/A N/A Auto-configuration and set the color - Acer AL2416 | AL2416W Service Guide - Page 37
Supported Cable Not Connected No Signal 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 then enter power saving. LOGO: When the monitor is power on, - Acer AL2416 | AL2416W Service Guide - Page 38
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 - Acer AL2416 | AL2416W Service Guide - Page 39
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 - Acer AL2416 | AL2416W Service Guide - Page 40
4 preset as 9300, 7500,6500 and User, Default value of user color should be user which is maximum setting for panel. Target to Noise ratio Total harmonic distortion Cross talk Output Watt. Volume Control Audio Input Freq. Spec. Comment Min. Typ. Max. - 0.5Vm - s - 500 800 500m Vrms 1KHz - Acer AL2416 | AL2416W Service Guide - Page 41
Remove the five screws to release the back cover. 2. Remove the two screws to release the EMI cover from chassis. 3. Remove the Main Board, Power Board, Inverter and Key Board. (See the next page for detail.) 4. Remove the six screws from chassis then take the chassis. 5. Remove the four screws from - Acer AL2416 | AL2416W Service Guide - Page 42
to release line from Chassis. 7. Remove the three screws from Chassis. 8. Remove the two screws to release power board from Chassis. 9. Then take the power board from the chassia. Disassemble the Inverter and key board 1. Remove the one screw to release VK board from bezel. 2. Disassemble the two - Acer AL2416 | AL2416W Service Guide - Page 43
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Troubleshooting Main Procedure Chapter 4 44 - Acer AL2416 | AL2416W Service Guide - Page 45
Power Circuit and Backlights Troubleshooting 45 - Acer AL2416 | AL2416W Service Guide - Page 46
Performance Troubleshooting 46 - Acer AL2416 | AL2416W Service Guide - Page 47
Function Troubleshooting 47 - Acer AL2416 | AL2416W Service Guide - Page 48
Connector Information Video input Connector Analog Video input Connector: 15pins mini D-Sub Table 2.4.5. Pin assignment for D-sub connector Chapter 5 Separate Sync 5 10 15 PIN NO. 1 1 RED VIDEO 2 GREEN VIDEO 6 3 BLUE VIDEO 11 4 GROUND 5 GROUND 6 RED GROUND 7 GREEN GROUND 8 BLUE - Acer AL2416 | AL2416W Service Guide - Page 49
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 - Acer AL2416 | AL2416W Service Guide - Page 50
50 - Acer AL2416 | AL2416W Service Guide - Page 51
INVERTER 8 PK101V0110I PWR MODU 9 461ACY30001 FIRMWARE CTRL/B 10 454AC830011 PCBA KEY/B 11 X66AUV30001 MEC PARTS ABO LTM240M1-L01-L00 24"B A Acer 1 - - - - 301 AA668 POW-INV 14P 1 - - - - 304 AA668 POW-LOG 12P 1 - - - - 305 AA668 CTRL-KEY 9P-8P 1 - - - - 306 AA668 CTRL-PANEL POWER - Acer AL2416 | AL2416W Service Guide - Page 52
Part list No. 1 Photo 2 3 Part Name Part No. Hinge Cover FAAA6622000 Base FAAA661A000 BACK Cover ASSY FAAA6613000 4 STAND FAAA6610000 5 EMI COVER ASSY EEAA6617000 52 - Acer AL2416 | AL2416W Service Guide - Page 53
6 MB 461ACY30001 9 Power Board to MB cable AU: 453AC530051 Samsung: 453AC530051 7 Power Board PK101V0110I 8 Inverter Board PK07V0033I0 9 Front Bezel ASSY FAAA6611000 10 Keyboard to MB Cable DC020193500 53 - Acer AL2416 | AL2416W Service Guide - Page 54
13 Frame ECAR9915A00 14 LCD (R) AC6VA2400R0 15 Panel to MB cable NBX30000263 16 Function Board 454AC830011 54 - Acer AL2416 | AL2416W Service Guide - Page 55
Schematic Diagram Chapter 7 55 - Acer AL2416 | AL2416W Service Guide - Page 56
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