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Acer AL1916 Service Manual

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All manuals and user guides at all-guides.com
Acer AL1916v
Service Guide

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Summary of Contents for Acer AL1916

  • Page 1 All manuals and user guides at all-guides.com Acer AL1916v Service Guide...
  • Page 2 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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 ………………………………………...

  • Page 7: Chapter 1 Monitor Features

    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 50k hours or more. Chart of AL1916 19" AU M190EN04 Panel...

  • Page 8: Electrical Requirements

    All manuals and user guides at all-guides.com Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light 225 lux 40 cm in front of LCD panel Viewing distance All specifications 30 minutes Warm up time Fully functional 5 seconds...

  • Page 9: Lcd Monitor General Specification

    All manuals and user guides at all-guides.com LCD Monitor General Specification 19 “ active matrix color TFT LCD Panel type AU M190EN04 376.32mm (H) × 301.06mm(V) Display size VGA 640 × 480 (60/75 Hz) SVGA 800 × 600 (60/75 Hz) Display mode XGA 1024 ×...

  • Page 10: Lcd Panel Specification

    All manuals and user guides at all-guides.com 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...

  • Page 11: Support Timing

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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. Flat Panel and CCFL Drive.

  • Page 13: Main Board Diagram

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com Software Flow Chart...
  • Page 15 All manuals and user guides at all-guides.com 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

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

  • Page 17: Front Bezel

    All manuals and user guides at all-guides.com 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. •...

  • Page 18: Rear Bezel

    All manuals and user guides at all-guides.com 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.

  • Page 19: Chapter 2 Operating Instructions

    All manuals and user guides at all-guides.com 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. •...

  • Page 20: Front Panel Controls

    All manuals and user guides at all-guides.com 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. •...

  • Page 21: Adjusting The Picture

    All manuals and user guides at all-guides.com 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.
  • Page 22 All manuals and user guides at all-guides.com b. The Description For Control Function Main Menu Sub Menu Sub Menu Item Description Icon Icon Contrast Contrast from Digital-register. Brightness Backlight Adjustment Focus Adjust Picture Phase to reduce Horizontal-Line noise Clock Adjust picture Clock to reduce Vertical-Line noise. H.
  • Page 23 All manuals and user guides at all-guides.com Main Menu Sub Menu Sub Menu Description Icon Item Icon Auto Config Auto Adjust the H/V Position, Focus and Clock of picture. (Analog-Only Model) Show the resolution, H/V frequency and input port of current Information input timing.

  • Page 24: Hot-Key Menu

    All manuals and user guides at all-guides.com Hot-Key Menu a. Outline b. The Description For Hot-Key Function Item Operation Icon Description When the OSD is closed, press Left or Volume of Audio adjustment. The Audio will be Volume Right button will be Volume Hot-Key Mute when volume=0 Function OSD Message...

  • Page 25: Logo

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com Disassemble the shield Remove two screws to release the shield. (Fig 5) (Remove the shield as arrow direction). Fig 5...
  • Page 29 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com Disassemble the panel Remove four screws to release metal frame. (Fig 12) Fig 12...

  • Page 33: Chapter 4 Troubleshooting

    All manuals and user guides at all-guides.com Chapter 4 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...
  • Page 34 All manuals and user guides at all-guides.com 2. No picture (LED is orange) No picture Measure U701 PIN2=3.3V U702 PIN2=3.3V Replace U701, U702 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of computer, or change the...
  • Page 35 All manuals and user guides at all-guides.com 3. Panel Power Circuit Check the PPWR panel power relative circuit,Q706, Q704 Check CN101 PIN 23-24 should have In normal operation, when LED =green, R725 response from 0V to 5V When we Should =5 V, switch the power switch from on to off If PPWR no-response when the power switch Turn on and turn off, replace the U401-TSUM16AK...
  • Page 36 All manuals and user guides at all-guides.com 5. PWPC No Power No power Check AC line volt 110V or 220V Check AC line Check the voltage of C904(+) Check F901, bridge rectified circuit Check start voltage for the pin3 of IC901 Check R903, R904,IC901 Check the auxiliary voltage is between 10V-16V Check IC901,T901...
  • Page 37 All manuals and user guides at all-guides.com No Backlight Check C201 (+) =12V Change F902 Check Q203/D201 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 (-) has the output of square wave at short time.

  • Page 38: Chapter 5 Connector Information

    All manuals and user guides at all-guides.com 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 Green Logic Ground Blue Monitor Ground Monitor Ground...

  • 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

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

  • Page 42: Chapter 7 Schematic Diagram

    All manuals and user guides at all-guides.com Schematic Diagram Analog Input CN405 　 FB410 1/16W DB15 RED+ 　 R434 1/16W C432 0.047uF RED- GREEN+ 　 　 FB411 1/16W R435 1/16W C433 0.047uF GREEN- 　 　 BLUE+ FB412 1/16W R436 1/16W C434 0.047uF BLUE- 　...

  • Page 43: Tsum16Ak

    All manuals and user guides at all-guides.com TSUM16AK VDVI VMPLL VPLL AVDD VDDP VDDC VCC1.8 FB401 VDDC VCC1.8 600 OHM C403 U401 VCC3.3 4.7uF/16V VCTRL VCTRL C404 0.1uF NC/LVACKP/NC RIN0P NC/LVACKM/NC GNDR RIN0N RA1P/LVA2P/RA2 R489 R490 GIN0P RA1N/LVA2M/RA3 GNDG GIN0N RA2P/LVA1P/RA4 　...

  • Page 44: Lvds

    All manuals and user guides at all-guides.com PB[0..5] PB[0..5] CN102 PA[0..7] RB1P PA[0..7] PA[0..7] RB1N PA[0..7] LVACKP FB0N RB2P RA3N LVACKM FB0P RA1P RB2N RA3P RA1N LVA2P RB3P RA2P LVA2M FB1N RB3N RA2N LVA1P FB1P RA2N RA2P PB[6..11] LVA1M RA3P PB[6..11] LVA0P RA3N...

  • Page 45: Main Board Power Supply

    All manuals and user guides at all-guides.com Power SOT-223 U701 +3V3 NC/LT1117-18 +3V3 C701 C703 C704 100uF/25V BL_ADJ(DC) 0V ~ 3.3V 4.7K 0V ~ 5V 4.7K 4.7K MMBT3904 BL_ADJ P W M C705 1uF/16V +12V R708 +12V 4 CN701 　 1/16W C706 C707...

  • Page 46: Power Board

    All manuals and user guides at all-guides.com Power board (adapter + inverter) R921 C921 　 1/2W 0.001uF/500V DB901 KBP206G D921 FME-210B L903 T901 R908 C923 C931 C925 　 R903 R906 C905 100K 1000uF/25V 1000uF/25V 470uF/25V 　 3.3K 1/8W 0.0015uF/2KV R922 C922 　...
  • Page 47 All manuals and user guides at all-guides.com L201 +12V Q202 Q203 120UH R221 R222 R223 R224 　 　 　 1.8K 　 C201 DTA144WKA R201 AOU401L ZD201 1.8K 1/4W 1.8K 1/4W 1.8K 1/4W 　 0.1uF/25V C203 C204 2.4K 1/10W RLZ11B 0.1uF/25V Q201 C202 470uF/25V...

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