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Acer AL1602W Service Manual

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Acer AL1602W
Service Guide
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Summary of Contents for Acer AL1602W

  • Page 1 Acer AL1602W Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision History TPV model T68MMRD8Q2ABAN/ Apr.-2-2008 Initial Release T68MMRD8Q1ABNN...
  • 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 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. 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.
  • 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: Table Of Contents

    Table Of Contents Chapter 1 Monitor Features ………………………………………… Introduction ……………………………………… Electrical Requirements ……………………………………… LCD Monitor General Specification ……………………………………… LCD Panel Specification ……………………………………… Support Timing ……………………………………… Monitor Block Diagram ……………………………………… Main Board Diagram ……………………………………… Software Flow chart ……………………………………… Main Board Layout ………………………………………...

  • 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 AL1602W Panel M156B1-L01 NB CMO...

  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Dark room (< 1 cd/m2) Viewing distance 40 cm for LCD performance, 20 cm for LCD failures Warm up time ＞30 minutes Analog Input signal 700 mVss Control temperature...

  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification Driving system TFT Color LCD Viewable Image Size 395mm diagonal 0.252mm(H) x 0.252mm(V) Pixel pitch 85 MHz Dot Clock LCD Panel Display Colors 16.7M Colors Contrast 500:1 (Typical) Response time Brightness 250cd/m2 (Typical) Separate Sync. H/V TTL Input H-Frequency 30kHz –...

  • Page 10: Lcd Panel Specification

    LCD Panel Specification General Feature M156B1-L01 is a 15.6” TFT Liquid Crystal Display module with 2 CCFL Backlight unit and 30pin 1ch-LVDS interface. This module supports 1366 x 768 WXGA mode and can display up to 16.7M colors. The inverter module for Backlight is not built in. Optical Characteristics...
  • Page 11 Electrical Characteristics TFT Module Back-light Note (1) Permanent damage might occur if the module is operated at conditions exceeding the maximum values. Note (2) Specified values are for lamp (Refer to 3.2 for further information). Note (3) The frequency range can guarantee the optical and electrical characteristics. Note (4) The frequency range will not effect the Lifetime and reliability characteristics.

  • Page 12: Support Timing

    Supported Timing...

  • Page 13: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, and keypad 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.

  • Page 14: Main Board Diagram

    Main Board Diagram Crystal LCD Interface (X401) (CN403) 14.31818MHZ Scalar IC TSUM1PFR-LF (Include MCU ,ADC, OSD) (U401) H sync V sync Key Board D-Sub Control Connector (CN401) (CN101)

  • Page 15: Software Flow Chart

    Software Flow Chart...
  • Page 16 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 17: Main Board Layout

    Main Board Layout Symbol Description Symbol Description U401 IC TSUM1PFR-LF CN401 WAFER 6PIN U404 IC AP1117D33LA TO252-3L ATC CN404 WAFER 9P RIGHT ANELE PITCH U103 IC AZC099-04S SOT23-6L CN403 CONNECTOR U102 IC AZC099-04S SOT23-6L X401 14.31818MHZ/32PF/49US U402 SST25LF020A-33-4C-SAE CN101 D-SUB 15PIN...

  • Page 18: Adjusting The Viewing Angle

    Adjusting the viewing angle...

  • Page 19: Rear Bezel

    Rear Bezel Item Description Item Description Power Cable Signal Cable Audio cable (Option-only for Audio model)

  • Page 20: Chapter 2 Operating Instructions

    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 21: Front Panel Controls

    Front Panel Control...

  • Page 22: Adjusting The Picture

    Adjusting the Picture 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 23 b. The Description For Function Control LEDS...

  • Page 24: Osd Message

    OSD Message CABLE NOT CONNECTED : 1. Check that the signal-cable is properly connected, If the connector is loose, tighten the connector’s screws. 2. Check the signal -cable connection pins for damage. INPUT NOT SUPPORT : Your computer has been set to unsuitable display mode, set the computer to display mode given in the above table...

  • 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 disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the screws remarked in red to release the STAND/BASE ASS'Y. (Fig 1) Fig 1 2. Remove the back cover first and then remove the bezel. (Fig 2) Fig 2...
  • Page 27 3. Remove the screws remarked in red and release the connectors remarked in blue to remove the main frame. You should pay attention to the LVDS cable. (Fig 3-4) Fig 3 Fig 4 4. Remove the screws marked in red to remove the main board and power board. (Fig 5) Fig 6...

  • Page 28: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting This chapter provides troubleshooting information for the AL1602W: 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 Reinsert or check the power section Measure U404 Pin2=3.3V,...
  • Page 29 2. No Picture No picture The button if under X401 oscillate Replace X401 control waveform is normal Check Correspondent Check reset circuit of component U401 is normal Measure U404 Pin2=3.3V, Replace U401 X401 oscillate waveform is normal Replace U404 Replace X401 Check HS/VS from CN101 is normal Check Correspondent...
  • Page 30 3. Panel Power Circuit White screen Measure Q404 base X401 oscillate waveform is normal is low level? Replace X401 Check CN403 is solder Check reset circuit of and Q404,Q405 is OK? U401 is normal Check Correspondent Check Correspondent component. component. Replace U401 Replace PANEL...
  • Page 31 4. Keypad Board OSD is unstable or not working Connect Keypad Board Is Keypad board connecting normally? Is Button Switch normally? Replace Button Switch Is Keypad board normally? Replace Keypad Board Check main board...
  • Page 32 5. No power Check L904 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R904, R932, R933, Change IC901 Check the auxiliary voltage is bigger than 10V and smaller than 20V 1) Check IC901...
  • Page 33 6. No Backlight Check the input voltage of 12V Check adapter and F801 Check ON/OFF signal Check Interface board or main board Check IC801 PIN12=12V Change on/off circuit Check IC801 PIN5 have triangle wave Change IC801 Check IC801 PIN9/PIN10 PWM wave Check IC801 Check Q802 Drain wave Change Q802...

  • Page 34: Chapter 5 Connector Information

    Chapter 5 Connector Information The following figure shows the connector locations on the monitor:...

  • Page 35: Chapter 6 Fru (Field Replacement Unit) List

    NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it. Exploded Diagram (Model: AL1602W)
  • Page 36 Part List Above picture show the description of the following component. Item Picture Description STAND/BASE ASS'Y 15.6 Main Frame Key board Panel...
  • Page 37 Power Board Main Board...

  • Page 38: Schematic Diagram

    Chapter 7 Schematic Diagram Main Board...
  • Page 42 Power board...
  • Page 45 Key board...

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