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Acer V193 Service Manual
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Acer V193 Service Manual

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Acer V193
Service Guide
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Summary of Contents for Acer V193

  • Page 1 Acer V193 Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision History TPV model Mar.-10-2008 Initial Release T97HNCD8K3ABNN...
  • 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

    Chapter 1 Monitor Features Introduction Scope This specification defines the requirements for the 19” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector, also supports VESA DPMS power management and plug & play function. Description The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no radiation.

  • 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 Active Display Area 376.32 (H) x301.056 (V) Pixel pitch 0.294(H) x 0.294(V) LCD Panel Contrast Ratio 1000 : 1 Response time Luminance of White 300(Typ.) cd/㎡ Separate Sync. H/V TTL Input H-Frequency 30kHz –...

  • Page 10: Lcd Panel Specification

    LCD Panel Specification General Specifications Mechanical Information Electrical Characteristics...
  • Page 11 Optical Specifications...

  • Page 12: Support Timing

    Support Timing...

  • Page 13: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, and key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

  • Page 14: Main Board Diagram

    Main Board Diagram Crystal LCD Interface (X401) (CN101) 12MHz Scalar IC NT68625MFG-128 (Include MCU ,ADC, OSD) (U401) H sync V sync Key Board D-Sub Control Connector (CN701) (CN403)

  • 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 U402 AZ431AN-A-E1 CN701 WAFER 6PIN U401 IC NT68625MFG-128-JC QFP-128L CN702 WAFER 9P RIGHT ANELE PITCH U702 AP1117E33LA CN403 D-SUB 15PIN CN101 CONNECTOR X401 NXS12.000AC30F-BT-2...

  • Page 18: Installation

    Installation To install the monitor on your host system, please follow the steps below: Steps 1 Connect the video cable A：Make sure both the monitor and computer are switched off. B：Connect the VGA video cable to the computer. 2 Connect the power cord Connect the power cord to the monitor, then to a properly grounded AC outlet.

  • Page 19: Attaching/Removing The Base

    Attaching/Removing the Base Attaching: Align the release button on the bottom of the monitor with the corresponding slots on the bottom of the base. Removing: Press the release button as indicated, then pull in the direction of the arrow to remove the base.

  • 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: Ecolor Management (Osd)

    eColor Management (OSD)

  • Page 22: How To Adjust A Setting

    How to Adjust a Setting...
  • Page 23 Adjusting the picture...
  • Page 25 OSD Message a. Outline b. The Description For OSD Message Item Description Auto Config When Analog signal input, if User Press Hot-Key “Auto”, will show this message, and the Please Wait monitor do the auto config function. Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor Supported support range, will show this message.

  • Page 26: 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 27: 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 cover hinge as the following indicator. (Fig 1) Fig 1 2. Remove the screws as following indicate to release base stand. (Fig 2) Fig 2...
  • Page 28 3. Remove the back cover and bezel. (Fig 3) Fig 3 4. Remove the lamp connectors. (Fig 4) Fig 4...
  • Page 29 5. Remove the screws to remove the panel. Put attention to the LVDS cable.(Fig 5-6) Fig 5 Fig 6 6. Remove the screws to remove the main board and power board.( Fig 7) Fig 7...

  • Page 30: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting This chapter provides troubleshooting information for the V193R: 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 U702 Pin2=3.3V, Measure CN702...
  • Page 31 2. No Picture (LED is orange) 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 U702 Pin2=3.3V, Replace U401 X401 oscillate waveform is normal Replace U702 Replace X401 Check HS/VS from...
  • Page 32 3. Panel Power Circuit White screen Measure Q705 base X401 oscillate waveform is normal is high level? Replace X401 Check CN101 is solder Check reset circuit of and Q704,Q705 is OK? U401 is normal Check Correspondent Check Correspondent component. component. Replace U401 Replace PANEL...
  • Page 33 4. Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Board Replace Button Switch Is Button Switch normally? Replace Key Board Is Key Pad Board normally? Check Main Board...
  • Page 34 5. Power Board No power No power Check to CN902 Pin10,11 =14V and Pin6,7 = 5 V Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, L901, IC901 Check the voltage of C905(+) Check bridge retified circuit Check start voltage for the Pin2 of IC901 Change IC901 Check the auxiliary voltage is smaller than 20V...
  • Page 35 W/LED No Backlight Check the 14V voltage input Check the adapter Check ON/OFF signal Check Interface board Check IC801 pin12=12V? Change Q805.Q808 or Q810 Check the pin9&10 of IC801 have PWM wave Change Q801/Q804/Q811/Q812 Replace IC801 Check the resonant wave of pin3 &...

  • Page 36: Chapter 5 Connector Information

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

  • Page 37: 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: V193R)
  • Page 38 Part List Above picture show the description of the following component. Item Picture Description Base Main Frame Panel...
  • Page 39 Power Board Main Board...

  • Page 40: Chapter 7 Schematic Diagram

    Chapter 7 Schematic Diagram Main Board move FB403 FB404 FB405 to CN403 R425 1K 1/16W 5% ZD402 D403 BAV99 VGA_5V UDZSNP5.6B FB404 R426 C418 VGA_VDD 0.047uF ZD407 30 OHM 100R 1/16W 5% R427 CN403 UDZSNP5.6B 75R 1/16W 5% R428 DB15 R429 C419 BI1-...
  • Page 41 CN101 LVDS OUTPUT TCLK1M TCLK1P TCLK1P TCLK1M TCLK2M TCLK2P TCLK2P TCLK2M LCD-VDD LCD-VDD LCD-VDD CONN LCD-VDD FB703 120 OHM C715 22uF/16V C714 R710 R711 0.1uF 16V 220 OHM 1/4W 10K 1/16W 5% R712 10K 1/16W 5% Q704 AO3401 R713 10K 1/16W 5% Q705 PANEL_ON PMBS3904...
  • Page 42 DVDD PARTS NONE OD U401 NT68665 NT68670 C402 R444 0.1uF 16V R445 C426 0.1u R422 100R TCLK1M 3 R447 TCLK1P 3 R448 +1.8V CVDD18 ADC_VAA FB402 C427 0.1u C403 C404 C426 C405 0.1uF 16V 0.1uF 16V 0.1uF 16V MCU_VDD DVDD R445 R444 TCLK2M 3...
  • Page 43 +3.3V R702 CN702 +3.3V 10K 1/16W 5% U702 AP1117E33LA FB701 120OHM DVDD VOUT R703 ADC_VAA 1K 1/16W 5% BL_DIM 4 Q701 PMBS3904 R705 C702 FB702 120OHM PANEL_ID 4 10K 1/16W 5% C704 VOLUME 4 100uF/25V 0.1uF 16V MUTE 4 BL_EN 4 R704 C703 C705...
  • Page 44 Power board...
  • Page 46 Key board ZD001 UDZSNP5.6B add ZD001 and ZD002 for ESD solution LED001 LED CN001 ZD002 UDZSNP5.6B LBADC1 R001 2K OHM 1/16W LBADC2 LED_BLUE# POWER_Key LED_RED# LED_BLUE# LED_RED# R002 2K OHM 1/16W C001 C002 C003 C004 C005 CONN R003 1K 1/16W 5% MENU LBADC1 VOL-...

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