Acer AL1916 Service Manual
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Acer AL1916 Service Manual

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Acer AL1916v
Service Guide

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Summary of Contents for Acer AL1916

  • Page 1 Acer AL1916v Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision Jun.-9-2005 Initial release...
  • Page 3 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.
  • Page 4 1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION 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).

  • Page 5: Special Notes On Lcd Monitors

    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: Table Of Contents

    Chapter 1 Monitor Features Induction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Block Diagram Main Board Diagram Software Flow chart Main Board Layout Front Bezel Rear Bezel Chapter 2 Operating Instructions External Controls Front Panel Controls Adjusting the picture Hot-Key Menu OSD Message...

  • Page 7: Chapter 1 Monitor Features

    Signal Interface Sync Type Color Temp User Adjust Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel Height Adjust Chart of AL1916 19" AU M190EN04 D-SUB Separate / Compatible Support VESA DDC2B Not support Yes / No Option Chapter 1...

  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Viewing distance Warm up time All specifications Fully functional Measuring equipment Control settings User brightness control User contrast control User red/white balance, Green/white balance and Blue/white balance control Power input...

  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification Panel type Display size Display mode Pixel pitch Display dot Pixel clock Contrast ratio Brightness Response time (Tr+Tf) Display color Viewing angle Pc interface Signal connector Interface frequency Plug & play Power Input voltage Total output power 19 “...

  • Page 10: Lcd Panel Specification

    LCD Panel Specification (AU M190EN04) LCD Panel Model Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 376.32mm(H) x 301.06mm(V) Pixel Pitch 0.294mm(H) x 0.294mm(V) Display Color 16.2M (true) Lamp Frequency 50kHz(Max.) Lamp Current 7.0 mArms (typ.)

  • Page 11: Support Timing

    Supported Timing Support Modes There will be 20 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 “...

  • Page 12: Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, keypad board and audio board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel. CCFL Drive.

  • Page 13: Main Board Diagram

    Main Board Diagram LCD Interface Scalar TSUM16AK Crystal SST25VF010- (Include: MCU, ADC, OSD etc) 14.318MHZ 20-4C-SAE D-SUB EEPROM Connector AT24C16N OSD Control Interface (Keypad) EEPROM 24C02...

  • Page 14: Software Flow Chart

    Software Flow Chart...
  • Page 15 Remark: 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.

  • Page 16: Main Board Layout

    Main Board Layout Label CN405 CN101 U401 X401 Part number 88G 35315F H D-SUB 15PIN 33G801724B H PIN HEADER 24P 2.0mm 56G 562100 TSUM16AK 93G 22 53 CRYSTAL 14.318MHzHC-49U Description...

  • Page 17: Front Bezel

    Front Bezel 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. •...

  • Page 18: Rear Bezel

    Rear Bezel Turn off your computer before performing the procedure below. 1. Plug the power cable of your monitor into a nearby outlet. Plug the other end of the power cord into the PC port. 2. Connector one end of 15-pin D-SUB cable to the back of the monitor and connector the other end to the computer’s D-DUB port.

  • Page 19: Chapter 2 Operating Instructions

    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. • The power cord should be connected. •...

  • Page 20: Front Panel Controls

    Front Panel Control • /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. • 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.

  • Page 21: Adjusting The Picture

    Adjusting the Picture a. 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.
  • Page 22 b. The Description For Control Function Main Menu Sub Menu Item Icon Contrast Brightness Focus Clock H. Position V. Position Warm Cool User / Red User/ Green User / Blue English Traditional Chinese Deutsch Français Español Italiano Simplified Chinese Japanese H.
  • Page 23 Main Menu Sub Menu Sub Menu Icon Item Auto Config (Analog-Only Model) Information Reset Exit Icon Auto Adjust the H/V Position, Focus and Clock of picture. Show the resolution, H/V frequency and input port of current input timing. Clear each old status of Auto-configuration and set the color temperature to Cool.

  • Page 24: Hot-Key Menu

    Hot-Key Menu a. Outline b. The Description For Hot-Key Function Item Operation When the OSD is closed, press Left or Volume Right button will be Volume Hot-Key Function OSD Message a. Outline b. The Description For OSD Message Item Auto Config When Analog signal input, if User Press Hot-Key “Auto”, will show Please Wait This message, and the monitor do the auto config function.

  • Page 25: Logo

    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 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 26: Chapter 3 Machine Disassembly

    Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure Disassemble the base 1. Remove hinge cover. (Fig 1) 2. Remove four screws to release stand base. (Fig 2) Fig 1 Fig 2...
  • Page 27 Disassemble the front cover and rear bezel Remove nine screws to release back cover and front bezel. (Fig 3) Remove connector wire with keyboard and main board. (Fig 4) Fig 3 Fig 4...
  • Page 28 Disassemble the shield Remove two screws to release the shield. (Fig 5) (Remove the shield as arrow direction). Fig 5...
  • Page 29 Disassemble the main board 1. Remove three screws to release main board. (Fig 6) 2. Remove connector wire with main board and panel. (Fig 7) Fig 6 Fig 7...
  • Page 30 Remove connector wire with main board and power board. (Fig 8) 4. Remove connector wire with main board and KEPC board. (Fig 9) Fig 8 Fig 9...
  • Page 31 Disassemble the power board 1. Remove four screws to release power board. (Fig 10) 2. Remove connector wire with power board and panel. (Fig 11) Fig 10 Fig 11...
  • Page 32 Disassemble the panel Remove four screws to release metal frame. (Fig 12) Fig 12...

  • Page 33: Chapter 4 Troubleshooting

    Troubleshooting This chapter provides troubleshooting information for the AL1916: 1. No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Measure U701 PIN2=3.3V, U702 PIN2=3.3V...
  • Page 34 2. No picture (LED is orange) No picture Measure U701 PIN2=3.3V U702 PIN2=3.3V X401 oscillate waveforms are normal Check if the sync signal from computer is output and video cable is connected normally Replace U401 Replace U701, U702 Replace X401 Input the sync signal of computer, change...
  • Page 35 3. Panel Power Circuit Check CN101 PIN 23-24 should have response from 0V to 5V When we switch the power switch from on to off Replace panel 4. Keypad Board OSD is unstable or not working Is Keypad board connecting normally? Is Button Switch normally? Is Keypad board normally? Check main board...
  • Page 36 5. PWPC No Power No power Check AC line volt 110V or 220V Check the voltage of C904(+) Check start voltage for the pin3 of IC901 Check the auxiliary voltage is between 10V-16V Check D910, D911, IC902 Check AC line Check F901, bridge rectified circuit Check R903, R904,IC901 Check IC901,T901...
  • Page 37 No Backlight Check C201 (+) =12V Check ON/OFF signal Check U201 pin9=12V ? Check the pin1 of U201 have saw tooth wave Check D201 (-) has the output of square wave at short time. Check the resonant wave of pin2 & pin5 for PT201/ PT202 Check the output of PT201/PT202 Check connecter &...

  • Page 38: Chapter 5 Connector Information

    Connector Information The following figure shows the connector locations on the monitor board: PIN NO. 15 – Pin Color Display Signal Cable (D-sub) DESCRIPTION PI N NO. Green Blue Monitor Ground DDC-Return R-Ground G-Ground B-Ground Chapter 5 DESCRIPTION Logic Ground Monitor Ground DDC-Serial Data H-Sync...

  • Page 39: Chapter 6 Fru (Field Replacement Unit) List

    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.

  • Page 40: Exploded Diagram

    Exploded Diagram (Model: AL1916)
  • Page 41 Part List Above picture show the description of the following component. Item Picture Description BACK COVER STAND BEZEL BASE SCREW SCREW Part No. 34G1574 RX B 34G1576 RX B 34G1573AQW B 34G1575 RX B M1L1730 8128 Q1G 340 10128...

  • Page 42: Chapter 7 Schematic Diagram

    Schematic Diagram Analog Input CN405 DB15 RED+ RED- GREEN+ GREEN- BLUE+ BLUE- PC5V PC5V VGA_CON D403 BAV99 D406 MLL5232B 5.6V C439 0.1uF C440 0.1uF FB409 120 OHM D408 D409 MLL5232B 5.6V MLL5232B 5.6V FB410 　 1/16W R434 　 1/16W FB411 　...

  • Page 43: Tsum16Ak

    TSUM16AK VDVI VMPLL VPLL AVDD VDDP U401 VCC3.3 RIN0P GNDR RIN0N R489 R490 GIN0P GNDG GIN0N 　 　 1/16W 1/16W SOGIN0 BIN0P GNDB BIN0N HSYNC HSYNC0 VSYNC VSYNC0 DDCA_SDA DDCA_SDA DDCA_SCL DDCA_SCL RX2P RX2N RX1P RX1N RX0P RX0N CLK+ RXCKP CLK- RXCKN DDCD_SDA...

  • Page 44: Lvds

    PA[0..7] PA[0..7] PA[0..7] PA[0..7] LVACKP LVACKM RA1P LVA2P RA1N RA2P LVA2M LVA1P RA2N LVA1M RA3P LVA0P RA3N LVA0M PA[8..13] PA12 LVA3P PA[8..13] PA13 LVA3M GA1P GA1N PA10 GA2P PA11 GA2N PA12 GA3P PA13 GA3N PB[12..23] PA[14..19] PB[12..23] PB12 LVB3P PA14 BA1P PB13 LVB3M...

  • Page 45: Main Board Power Supply

    Power SOT-223 U701 NC/LT1117-18 C701 C703 100uF/25V BL_ADJ(DC) 0V ~ 3.3V 4.7K 0V ~ 5V 4.7K 4.7K BL_ADJ P W M +12V +12V CN701 C706 C707 BL_ON 0.1uF BL_ADJ 100uF/25V +12V +12V C711 0.1uF C710 CONN C709 VCC5V 0.1uF 100uF/25V R701 　...

  • Page 46: Power Board

    Power board (adapter + inverter) DB901 KBP206G C904 100uF/450V L902 C902 0.001uF/250V C907 0.1uF C901 0.001uF/250V L901 R910 2.2K 　 1/10W IC901 NCP1203D60R2G NCP1203D60R2G R911 　 3.6K 1/10W C903 0.47uF/250V 减低调整灵敏度 R901 330K 　 1/8W C909 47uF/25V R902 R900 　 　...
  • Page 47 +12V Q202 C201 DTA144WKA 0.1uF/25V C203 C204 0.1uF/25V Q201 C202 470uF/25V DTC144WKA 0.1uF/25V R214 ON/OFF 　 R211 R213 R210 4.7K 　 1/10W 　 1/10W C209 4.7uF/50V R212 　 1/10W C210 1uF/25V C208 0.1uF/25V IC201 C206 C207 330pF R207 　 1/10W 　...

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