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, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.
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.
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.
Factory Preset Timing Table Horizontal Vertical Video Mode Resolution Frequency (KHz) Frequency (Hz) 640 x 480 31.469 59.940 640 x 480 37.500 75.000 640 x 480 37.861 72.809 800 x 600 35.156 56.250 VESA SVGA 800 x 600 37.879 60.317 800 x 600 46.875 75.000...
Monitor Block Diagram The LCD Monitor will contain a main board, an inverter/an internal adapter board, a keypad board and an audio board 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 the 12V DC-power to inverter/power board.
1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.
Chapter 2 Operating 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. •...
Front Panel Controls • Power Button: Press this button to turn the monitor ON or OFF, and display the monitor’s state. • Power Indicator: Green —Power On mode. Orange —Off mode. NOTES • MENU / ENTER: Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status.
OSD Menu How to adjust a setting 1. Press the MENU- button to activate the OSD window. 2. Press <or >to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or >to change the settings of the current function. 5.
Warm Recall Warm Color Temperature from EEPROM. Cool Recall Cool Color Temperature from EEPROM. User / Red User/Green Adjusts Red/Green/Blue intensity. User / Blue English 繁體中文 Deutsch Français Multi-language Selection Español Italiano 简体中文 日本語 H. Position Adjust the horizontal position of the OSD. V.
Hot-Key Menu (option): a. Outline: b. The description for Hot-Key function: Item Operation Icon Description Adjustment Reset Range Value Volume When the OSD is closed, press Left or Volume of Audio adjustment. The Audio 0-100 Right button will be Volume Hot-Key will be Mute when volume=0.
LOGO When the monitor is power on, the LOGO will be showed in the center, and disappear slowly. HOW TO OPTIMIZE THE DOS-MODE PLUG AND PLAY Plug & Play DDC1/2B Feature This monitor is equipped with VESA DDC1/2B 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.
Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance and troubleshooting. 1. The screws for the different components vary in size. During the disassembly process, group the screws NOTE: with the corresponding components to avoid mismatch when putting back the components. 2.
front panel 1. Remove 4 screws in the rear cover. Tool: For remove the cover Stand up the monitor, make the front up, then find out the hooks’ position, use the tool (like the picture or other card) to insert it to disassemble the monitor, then the front panel can be removed.
1. Remove the screw on the shield. Remove the shield 2. Remove the 2 screws for VGA connector. Push the shield parallel along the arrowhead direction.
1. Remove the 4 screws Remove the main board 2. Disconnect the connectors. Remove the Remove the 2 screws audio board...
Remove the Remove the 5 screws power board Disconnect the 2-wire harness connector for power and lamps. Disconnect the wire harness 1. Lay the panel left side up. Remove the 2. Remove the four screws (left main frame and right, total 4).
Chapter 4 Troubleshooting This chapter provides troubleshooting information for the AL1511: Main Board Defect Mode Failure Analysis Repair Testing Missing Line Abnormal Display Bright Dot Dark Dot Light Leakage Mura Check Panel Change Panel Image Sticking Dot Defect Brightness Spot...
Defect Mode Failure Analysis Repair Testing Noise Check Single Change Single Flicker Check Main board Change Main board Change Panel Check Panel Abnormal Check Main board Change Main board Gray Check Panel Change Panel Check LVD Cable Change LVD Cable R\G\B Check Single Change Single...
Defect Mode Failure Analysis Repair Testing Change Keyboard or LED Off Display Main board or wire Abnormal Change Keyboard or LED Dark Main board Change Keyboard or LED Abnormal Main board or wire Change Keyboard or LED Flicker Main board or wire Abnormal Check Wires Change Wires...
Power Board No Power Check AC line volt 110V or 220V Check AC line Check the voltage of C905(+) Check F901, bridge rectified circuit Check start voltage for the pin3 of IC901 Check R906, R907, IC901 Check the auxiliary voltage is between 10V-16V 1) Check IC902, IC903 2) 2) Check Q901, Q902, ZD901 circuit Check D910, D912...
No Backlight Check C201 (+) =12V Check F902 Check ON/OFF signal Check Interface board Check U201 pin9=12V ? Change Q201 or Q202 Check the pin1 of U201 have saw tooth wave Change U201 Check D201 (-) have the output of square wave at short time. Check Q203/Q205/Q207/D201 Check the resonant wave of pin2 &...
Key Board OSD is unstable or not working Is Keypad board connecting normally? Connect Keypad Board Is Button Switch normally? Replace Button Switch Is Keypad board normally? Replace Keypad Board Check main board...
Chapter 5 Connector Information The following figure shows the connector locations on the monitor board: 15 - Pin Color Display Signal Cable (D-sub) Pin No. Description Pi N No. Description + 5V Green Logic Ground Blue Monitor Ground Monitor Ground DDC-Serial Data DDC-Return H-Sync...
ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from 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 for repair and service of customer machines.