Acer AL1715 Service Manual
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Acer AL1715 Service Manual

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Acer AL1715
Service Guide
Service guide files and updates are available on the
CSD web: for more information,
Please refer to
http://csd.acer.com.tw/
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Summary of Contents for Acer AL1715

  • Page 1 Acer AL1715 Service Guide Service guide files and updates are available on the CSD web: for more information, Please refer to http://csd.acer.com.tw/ - 1 -...
  • Page 2 Copyright Copyright © 2003 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated.
  • Page 3 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.
  • Page 4 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. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • 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: Special Notes On Lcd Monitors

    SPECIAL NOTES ON LCD MONITORS The following symptoms are normal with LCD monitor and do not indicate a problem. NOTES Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears.

  • Page 7: Table Of Contents

    Table of contents Chapter 1 Monitor Feature …………………………………………………………………...………..8 Chapter 2 Operating Instruction ………………………………………………..……………………..22 Chapter 3 Machine Disassembly and Replacement …………………………………..…………30 Chapter 4 Troubleshooting …………………………………………………………………………..40 Chapter 5 Connector Information …………………………………………………………………..44 Chapter 6 FRU List …………………………………………………………………………………… 45 Chapter 7 Schematic Diagram ….……………………………………………………………………..65 - 7 -...

  • Page 8: Chapter 1 Monitor Feature

    Monitor Feature INTRODUCTION Scope This specification defines the requirements for the 17” MICRO-PROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGA connector and eliminates the requirement of optional special display card. It also supports VESA DPMS power management and plug &...

  • Page 9: Electrical Requirements

    ELECTRICAL REQUIREMENTS Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light : Viewing distance : Warrn up time All specifications : Fully functional : Measuring Equipment : Control settings User brightness control : User contrast control: User red/white balance, Green/white balance and...
  • Page 10 LCD monitor General specification Panel Type: Display size: Display mode: Pixel pitch: Display Dot: Pixel Clock: θ Contrast ratio: = 0˚ Brightness: Response time (Tr/Tf): Display color: Viewing angle: Luminance Uniformity: Pc interface: Signal connector: Audio power: Front control: Interface frequency Horizontal Frequency Vertical Frequency Plug &...
  • Page 11 LCD Panel Specification LCD Panel Model (Hydis LT17E12-200) • Display Type • Resolution • Display Dot • Display Area • Pixel Pitch • Display Color • Lamp Voltage • Lamp Current • Weight • Optical Specifications Ta = 25 ± 2°C = 6.5mA (RMS) ITEM Contrast Ratio...
  • Page 12 Panel Relative Humidity Input Signals Video input • Type • Input Impedance • Polarity • Amplitude • Display Color Sync input • Signal • Polarity Interface frequency The following frequency range is generalized by supported timing. If the entered mode does not match the supported timing the display optimization will not be assured.

  • Page 13: Supported Timing

    Supported Timing FH(KHZ) SYNC TIMING FV(HZ) POLARITY 640x350 31.469 VGA-350 70.087 – 640x400 24.83 – NEC PC9801 56.42 – 640x400 31.469 – VGA-GRAPH 70.087 640x400 31.5 – NEC PC9821 70.15 – 640X480 31.469 VESA-PAL 50.030 640x480 31.469 – VGA-480 59.94 –...
  • Page 14 Support Modes There will be 28 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 “Out of Range” warning menu at this mode. Video input Connector Analog Video input Connector: 15pins mini D-Sub Table 2.4.5.

  • Page 15: Monitor Block Diagram

    Monitor Block Diagram The LCD monitor will contain an main board, an inverter/ power board, key board and internal adapter 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 thr 12V DC-power to inverter/ power board.

  • Page 16: Block Diagram

    BLOCK DIAGRAM System Block Diagram LVDS Signals MVPRL including ADC, Scaling LVDS And OSD function - 16 -...

  • Page 17: Monitor Board Layout

    Monitor board layout LABEL Component 74LVC14 24LVC21 MVPRL M8064I 24LC16B MAX810 SI9435 LM4838 APL1085-3.3 CE APL1117-2.5 VC LABEL Component D-SVB 15 PIN E&T 4501-10 E&T 6113-08 CN301 E&T 4501-11 CN302 E&T 4501-03 E&T DF14-30 - 17 -...
  • Page 18 Software flow chart - 18 -...

  • Page 19: Software Flow Chart

    Software Flow Chart 1. MCU initialize 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 “<” and “>” (Adjust key) and power key. 8.

  • Page 20: General Instructions

    General 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. Connect the video cable from the monitor to the video card.

  • Page 21: System Installation

    Connect the power cord to an AC power source. Connecting the Audio Cable (For AL1715 m and AL1715 bm) Connect the audio cable to the " LINE OUT " jack on your PC's audio card or to the front panel's “AUDIO OUT” jack of your CD ROM drive.

  • Page 22: Chapter 2 Operating Instruction

    Chapter 2 Operating Instructions CONTROLS Control panel (monitor front panel) 1. Power ON/OFF switch, push to ON and push to OFF. (Toggle switch) 2. Power LED will be blue when monitor is on; be amber when in power saving mode. 3.

  • Page 23: Main Osd Menu

    Main OSD Menu: Outline: The description for control function : Main Menu Sub Menu Sub Menu Icon Item Icon Contrast Brightness Focus Clock H. Position V. Position Warm Cool Description Contrast from Digital-register. Backlight Adjustment Adjust Picture Phase to reduce Horizontal-Line noise Adjust picture Clock to reduce Vertical-Line noise.
  • Page 24 User / Red Red Gain from Digital-register. User / Green Green Gain Digital-register. User / Blue Blue Gain from Digital-register. English Set OSD display language to English. 繁體中文 Set OSD display language to Tranditional Chinese. Deutsch Set OSD display language to German.

  • Page 25: Osd Message

    Hot-Key Menu:(For AR577 only) Outline: The description for Hot-Key function : Item Operation Volume When the OSD is closed, press Left or Right button will be Volume Hot-Key Function OSD Message: Outline: The description for OSD Message : Item Description Auto Config When User Press Hot-Key “Auto”, will show this message, and the monitor do the auto config Please Wait...
  • Page 26 LOGO: When the monitor is power on, the LOGO will be showed in the center. Item of Factory menu Vendor may customize design and add adjustment items Factory menu as far as all required items are included. 1) Bright Adjust Brightness and Contrast value to Max. 2) Auto Balance Adjust each R, G, B contrast (gain) and offset.

  • Page 27: Plug And Play

    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 28: White Color Temperature

    White Color Temperature White color temperature is 4 preset as 9300, 7500,6500 and User, Default value of user color should be user which is maximum setting for panel. Target of color setting Color Color Coordinate Temp. 9300K 0.283 6500K 0.313 User *) TCO’0X A.2.6.1 requirement User should follow “Microsoft Windows Color Quality Specification for Liquid Crystal Display OEM’s”.
  • Page 29 Electrical characteristics (Tamb=25°) Audio amplifier(USE Panasonic VP-7723A Audio Analyzor. ) Item Audio Input Input Voltage(V) Input Current(m A) Audio Voltage Gain 500m Vrms 1KHz Frequency Response 500m Vrms 300Hz-20KH Signal to Noise ratio 500m Vrms 1KHz Total harmonic distortion 500m Vrms 1KHz Cross talk 500m Vrms 1KHz Output Watt.

  • Page 30: Chapter 3 Machine Disassembly And Replacement

    Machine Disassembly and Replacement The step between front bezel and back cover shall be within specification. Top and Bottom Back cover & Bezel concavity 0.8mm ≤ A ≤ 1.3 mm Back Cover & Hinge Cover concavity 0mm ≤ B ≤ 0.5mm Left and Right Back cover &...
  • Page 31 Base & Neck concavity 0mm ≤ C ≤ 0.6mm Top and Bottom Back cover & Bezel step 0mm ≤ D ≤ 0.8 mm Left and Right Back cover & Bezel step 0mm ≤ D ≤ 0.8 mm - 31 -...
  • Page 32 LCD Horizontally The angle between front bezel and LCD unit in bottom side should not large than 1.0mm. The distance of the LCD display unit from left side to right should not large than 4.0mm. - 32 -...

  • Page 33: Gap Spec

    Tilt Base Rotation Tilt up 15 ± 2°/ down 5 ±2° Plastic Material For TCO99 Front Bezel PC+ABS Back Cover PC+ABS The Others ABS 94HB For MPRII Front Bezel ABS 94V-0 Back Cover ABS 94V-0 The Others ABS 94HB GAP Spec. Gap between panel with bezel is 0 mm <...

  • Page 34: Machine Assembly

    Machine assembly PICTURE AR578 AR577 Connect the FPC line on panel. Assemble the chassis onto panel. Firmly secure the Panel with 4 screws. Plug two speakers to put on bezel. 1. Connect the 13P line with VK board. 2. Firmly secure the VK board with 4 screws. DESCRIPTION...
  • Page 35 Connect speaker wires on VK board. (For AR577 only) Connect the bezel with monitor. To reverse the monitor. Assemble the power board onto chassis. AR577 AR578...
  • Page 36 Firmly secure the power board with 5 screws. AR577 AR578 Firmly secure the power cable with screws. AR577 AR578 Connect four panel voltage line on power board.
  • Page 37 1. Assemble the VL board onto chassis. 2. Firmly secure the VlL board with 3 screws. Firmly secure the VlL board and line with screws. Connect the FPC on VL board. Connect the power line on VL board. Connect the VL-VK line on VL board. AR577 AR578...
  • Page 38 Connect the audio line on power board. (For AR577 only) Firmly secure the line and chassis with 4 screws. Check it. AR577 AR578 Put the EMI cover on monitor.. Put the screws on EMI cover with monitor.
  • Page 39 Put the screws on EMI cover with monitor. 1. Connect the back cover with monitor. 2. Firmly secure the back cover with 4 screws. 1. Assemble the neck bracket onto neck. 2. Firmly secure the neck bracket with 4 screws. 1.

  • Page 40: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting Main Procedure...
  • Page 41 Power Circuit and Backlights Troubleshooting...
  • Page 42 Performance Troubleshooting...
  • Page 43 Function Troubleshooting...

  • Page 44: Chapter 5 Connector Information

    Connector Information Phonejack stereo PIN1. right : CEE22 typed connector PIN2. Left PIN3. Gnd Video input Connector Analog Video input Connector: 15pins mini D-Sub Table 2.4.5. Pin assignment for D-sub connector : Line-in receptacle PHONEJACK STEREO PIN NO. Chapter 5 Separate Sync RED VIDEO GREEN VIDEO...

  • Page 45: Chapter 6 Fru List

    Service Guide. For ACER-AUTHORIZED CERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code to 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 repair and service of customer machines.
  • Page 46 Model: AR577...
  • Page 47 Model:AR578...
  • Page 48 Part list A. For AL1715 Photo Part Name Description Back Cover Screws M4X0.7+6P-NI BaseASSY(FOOT) AR7714A(ABS94HB,MCG62) FAAR7714A10 M4X0.7+11P-MC Stand Screws WASHER DIM 8.0 NECK COVER AR7721(ABS94HB,MCG62) FAAR7721100 NECK BRACKET AR7722(SECC1.0) HINGE ASSY AR7717(SK-7,T=22) NECK AR7713(ABS94HB.MCG62) FAAR7713100 Panel & Chassis M3X0.5+4I-NI Function Board...
  • Page 49 Back Cover AR7712A(PC+ABS,MCG62) FAAR7712A10 Hinge Screws TPB-4+8C-MC 4#40UNCX12.7 Mainboard & Chassis PLS-WASHER 2W 40HM 37.5X17X9.5mm Speaker (R/L) 50mm POWER BOARD M3x0.5+6F-ZK &CHASSIS Invertor Board VP-583 LAR577Y Key/B & Bezel TPP2X3+12B-MC POWER BOARD M4.0X0.7+8BTF-MC &CHASSIS Function board to AR577 CTRL-KEY 13P Mainboard cable Main Shield AR7716(TIN0.3)
  • Page 50 Mainboard VL-731 LAR577Y Frame(BEZEL) AR7711A (PC+ABS,MCG62) FAAR7711A10 AR7715(SECC1.0) Main Frame/CHASSIS Mainboard to LCD JP577 PANEL-CTRL 30P Cable LCD Panel(F) HT17E12-200 17”(HYDIS) LCD Panel(B) HT17E12-200 17”(HYDIS) 461AAI300E1 ECAR7715000 DC020160700 AC6V0000200 AC6V0000200...
  • Page 51 B. For AR577 (Acer model:AL1715 bm ) Photo Part Name Description BACK COVER M4X0.7+6P-ZK SCREWS BACK COVER, Neck & Neck Bracket, TPP-4.0+10P-ZK Chassis & Bezel BaseASSY(FOOT) AR7714A(ABS94HB,MBK24) M4X0.7+11P-MC Stand Screws WASHER DIM 8.0 NECK COVER AR7721(ABS94HB,MBK24) NECK BRACKET AR7722(SECC1.0) HINGE ASSY...
  • Page 52 4#40UNCX12.7 Mainboard & Chassis PLS-WASHER 2W 40HM 37.5X17X9.5mm Speaker (R/L) 50mm POWER BOARD M3x0.5+6F-ZK &CHASSIS Invertor Board VP-583 LAR577Y Key/B & Bezel TPP2X3+12B-MC POWER BOARD M4.0X0.7+8BTF-MC &CHASSIS Function board to AR577 CTRL-KEY 13P Mainboard cable Main Shield AR7716(TIN0.3) Mainboard and M3X0.5+4C-NI Invertor Board Screws Mainboard...
  • Page 53 Frame(BEZEL) AR7711A (PC+ABS,MBK24) FAAR7711A00 AR7715(SECC1.0) Main Frame/CHASSIS Mainboard to LCD JP577 PANEL-CTRL 30P Cable LCD Panel(F) HT17E12-200 17”(HYDIS) LCD Panel(B) HT17E12-200 17”(HYDIS) ECAR7715000 DC020160700 AC6V0000200 AC6V0000200...
  • Page 54 For AR578 (Acer model:AL1715 ) Photo Part Name Description Back Cover Screws M4X0.7+6P-NI BaseASSY(FOOT) AR7714A(ABS94HB,MCG62) FAAR7714A10 M4X0.7+11P-MC Stand Screws WASHER DIM 8.0 NECK COVER AR7721(ABS94HB,MCG62) FAAR7721100 NECK BRACKET AR7722(SECC1.0) HINGE ASSY AR7717(SK-7,T=22) NECK AR7713(ABS94HB.MCG62) FAAR7713100 Panel & Chassis M3X0.5+4I-NI Function Board...
  • Page 55 Back Cover AR7812A(PC+ABS,MCG62) FAAR7812A10 Hinge Screws TPB-4+8C-MC 4#40UNCX12.7 Mainboard & Chassis PLS-WASHER POWER BOARD M3x0.5+6F-ZK &CHASSIS Invertor Board VP-583 LAR578Y Key/B & Bezel TPP2X3+12B-MC POWER BOARD M4.0X0.7+8BTF-MC &CHASSIS Function board to AR578 CTRL-KEY 13P Mainboard cable Main Shield AR7816(TIN0.3) Mainboard and M3X0.5+4C-NI Invertor Board Screws Mainboard...
  • Page 56 Frame(BEZEL) AR7811A (PC+ABS,MCG62) FAAR7811A10 AR7715(SECC1.0) Main Frame/CHASSIS Mainboard to LCD JP577 PANEL-CTRL 30P Cable LCD Panel(F) HT17E12-200 17”(HYDIS) LCD Panel(B) HT17E12-200 17”(HYDIS) ECAR7715000 DC020160700 AC6V0000200 AC6V0000200...
  • Page 57 D. For AR578 (Acer model:AL1715 b) Photo Part Name Description Back Cover Screws M4X0.7+6P-ZK BaseASSY(FOOT) AR7714A(ABS94HB,MBK24) M4X0.7+11P-MC Stand Screws WASHER DIM 8.0 NECK COVER AR7721(ABS94HB,MBK24) NECK BRACKET AR7722(SECC1.0) HINGE ASSY AR7717(SK-7,T=22) NECK AR7713(ABS94HB.MBK24) Panel & Chassis M3X0.5+4I-NI Function Board VK-583 LAR578Y BACK COVER, Neck &...
  • Page 58 Hinge Screws TPB-4+8C-MC 4#40UNCX12.7 Mainboard & Chassis PLS-WASHER POWER BOARD M3x0.5+6F-ZK &CHASSIS Invertor Board VP-583 LAR578Y Key/B & Bezel TPP2X3+12B-MC POWER BOARD M4.0X0.7+8BTF-MC &CHASSIS Function board to AR578 CTRL-KEY 13P Mainboard cable Main Shield AR7816(TIN0.3) Mainboard and M3X0.5+4C-NI Invertor Board Screws Mainboard VL-731 LAR578Y ABO Frame(BEZEL)
  • Page 59 AR7715(SECC1.0) Main Frame/CHASSIS Mainboard to LCD JP577 PANEL-CTRL 30P Cable LCD Panel(F) HT17E12-200 17”(HYDIS) LCD Panel(B) HT17E12-200 17”(HYDIS) ECAR7715000 DC020160700 AC6V0000200 AC6V0000200...

  • Page 60: Interface Signals

    POWER/Inverter Board Description This specification defined the performance and characteristic of power/inverter board. It supplies the following outputs : 1). 5Vdc: Logic power. 2). 5Vaudio: Audio power. 3). 15Vinv: Inverter power. Features Input Voltage: 100 ~ 240 ±10％Vac Input current: 1.2Amax. at 90Vac Input Frequency: 47 ~ 63Hz Input power saving consumption: Less than 1.2W @ minimum load Total output power: 60Wmax...

  • Page 61: Electrical Specification

    2.Inverter-side connecter : SM02B-BHSS-1-TB(JST) for AR577 / SM02(8.0)B-BHS-1(JST) for AR599 or equivalent. PIN NO. Function Electrical Specification: AC-DC Electrical specification Input Specification Item Input Voltage Input Frequency Input Current Inrush Current Hold Up Time Turn on time Efficiency Consumption Comment VBLH(High voltage) VBLL(Low voltage) Condition...
  • Page 62 AC-DC Output Specification Output Voltage +5Vdc +15Vinv +5Vaudio Ripple Noise 2.Band width is limited 50~100% or 100~50% load change of any DC Dynamic Load Regulation Over / Under Shoot *+5Vdc load regulation test: the +15Vinv loading at 2.0A *+15Vinv load regulation test: the +5Vdc loading at 1.5A Protection function 1) SCP: Short circuit protection must be acted on both outputs 2) OPP: Should be protected when output power consumption is within 60W ~ 75W...

  • Page 63: Inverter Electrical Specification

    Inverter Electrical Specification: For Hydis HT17E12-200 (AR577) Input Voltage Input Current Backlight ON/OFF Control Brightness Adjust Output Voltage Brightness Output Current(Each connector) Frequency Lamp start voltage Striking Time Lamp Current Balance Efficiency Operating Life Time *.The open lamp voltage is testes at output connector terminal SAFETY Leakage Current: 0.25mA @ 100Vac Insulation Resistance: more than 3M ohms while withstanding a voltage of 500Vac...

  • Page 64: Power Consumption

    Power Consumption The monitor is equipped with a power-management according to the below. There is a delay of 5s … 7s before the transition from On-state to any power saving state to avoid unintentionally entering of a power saving stage during display resolution and timing mode changes. Transition from any power saving state to another can be instantaneous.

  • Page 65: Chapter 7 Schematic Diagram

    Chapter 7 Schematic Diagram...

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