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.
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. Disclaimer The information in this guide is subject to change without notice.
Conventions The following conventions are used in this manual SCREEN MESSAGES NOTE WARNING CAUTION IMPORTANT Denotes actual messages that appear on screen. Gives bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions. Gives precautionary measures to avoid possible hardware or software problems. Remind you to do specific actions relevant to the accomplishment of procedures.
Preface Before using this information and the product it supports, please read the following general information. 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).
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. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
PRECAUTIONS z Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. z 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. Use only a trolley or stand recommended by the manufacturer or sold with the monitor. If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacturer and follow the kit instructions.
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. • You may find slightly uneven brightness on the screen depending on the desktop pattern you use. • The LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.
Table of Contents Chapter 1 Monitor Features ----------------------------------------------------------------- 6 Monitor Features --------------------------------------------------------------------------- 8 Factory Preset Timing Table -----------------------------------------------------------10 Block Diagram ------------------------------------------------------------------------------11 Main board Diagram ----------------------------------------------------------------------12 Software Flowchart -------
Chapter 1 Monitor Features SAMSUNG Driving system TFT Color LCD Size 43.2cm(17.0") Pixel pitch 0.264mm(H) x 0.264mm(V) Brightness 300cd/m2 (Typical) Contrast 500:1(Typical) Viewable angle 150° (H) 135° (V) Response time 12ms LCD Panel R, G, B Analog Interface Video Input Digital (Dual-Input Model) H-Frequency 30KHz – 80KHz V-Frequency 55-75Hz Display Colors 16.2M Colors Dot Clock 135MHZ Max.
External Controls Switch External Controls Functions • • • • • • • • • • • • • • • • • • • • • Auto Adjust Key / Volume up (option) Power Button MENU/ Exit Contrast Brightness Focus Clock H.Position V.
Factory Preset Timing Table 10
Monitor Block Diagram The LCD MONITOR contains a main board, an inverter/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. The Power will provide the 12V DC-power to inverter board and main board.
MAIN BOARD DIAGRAM VCC3.3V AT24C02 VCC2.
Software Flow Chart (1) (2) (3) (4) (5) Y N (6) (7) (8) Y N (9) (10) (11) (12) 13
1. Initialize MCU settings, including I/O, Timer, ISR and Serial Port settings. 2. Read EEPROM content to recover monitor settings, including brightness, contrast, color temperature and OSD position….etc. 3. Initialize system variable, including system flag, OSD timeout counter, burin mode status… etc. 4. Initialize OSD menu variable for user operation 5. Initialize device on the board, now only MST scaler chip will be initialized 6. Check if system is in power off status from first AC power up.
Monitor Board Layout Item Description X401 CRYSTAL 14.318MHzHC-49U X601 20MHz U201 RT9164A18PG S0T-223 U202 AIC1084-33CM U301 M24C02-WMN6T SMT U401 TSU16AK pqfp-128 U601 W78E65P-40 CN201 HEADER 2*6P CN301 D-SUB 15PIN CN302 3 PIN CN503 PIN HEADER 24P 2.0mm CN601 PIN EADER CN602 WAFER 16PIN 2.
Inverter Board Layout Item Description PT201 1.5MM RIVET PT202 1.5MM RIVET IC901 SG6841D BY SYSTEM IC902 PC123 Y82 IC903 HTL431 CN102 HEADER 2*6P CN201 WAFER CN202 WAFER CN203 CONN.
Front Bezel Item Description 1 Auto Adjust Key/Exit 2 >/ Volume up (option) 3
Back Bezel Item Description 1 AC POWER CORD 2 Signal Cable 3 Audio Cable（Only for speaker） 4 DVI Cable (Only Dual-Input Mode) 18
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. • The power cord should be connected. • Connect the video cable from the monitor to the video card. • Press the power button to turn on the monitor position. The power indicator will light up. External Control Button EXTERNAL CONTROLS 1. Auto Adjust Key/Exit 4.
• >/ Volume up: Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated. • Auto Adjust button / Exit: 1. When OSD menu is in active status, this button will act as EXIT-KEY (Exit OSD menu). 2. When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function. The Auto Adjustment function is used to set the H-Pos, V-Pos, Clock and Focus. • Power Indicator: Green —Power On mode.
OSD Menu 21
How to adjust a setting: 1. 2. 3. 4. Press the MENU-button to activate the OSD window. See figure 4. Press to select the desired function. See figure 4. Press the MENU-button to select the function that you want to adjust. Press < or >to change the settings of the current function. 5. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-4.
Main Menu Icon Sub Menu Icon Sub Menu Item Description N/A Auto Config N/A Analog Select input signal from analog (D-Sub) N/A Digital Select input signal from digital (DVI) N/A Information N/A Reset N/A Exit Auto Adjust the H/V Position, Focus and Clock of picture. (Only Analog-Input Model) (Only Dual-Input Mode) 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.
OSD Message The description for OSD Message: Item Auto Config Please Wait Input Not Supported Cable Not Connected Description 1.) When Analog signal input, if User Press Hot-Key “Auto”, will show this message, and the monitor do the auto config function. 2.) When Digital signal input, without this OSD Message. When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show this message. This message will be flying. 1.
Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance and troubleshooting. NOTE: 1.The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components. 2. Note: The monitor surface is susceptible to scratching! Therefore, lay the monitor on a soft surface when mounting or removing the base. 3.
Picture Description To put inverter board, and connect related interfaces To fix the board with screws To fix the wires with adhesive tape Connect Inverter board with Audio board To fix Audio board with screws To connect main board with Audio board To connect all other interfaces 26
To fix the main board with screws After having fix the board, cover the shield on them STRENGTH: In the end, cover the back bezel and connect above part with the chassis Warning: 1.In order to prevent the static disturbance, wear resisting static ring 2.
Chapter 4 Trouble shooting This chapter provides troubleshooting information for the AL1715: Defect Mode Failure Analysis Repair Testing Missing Line Abnormal Display Bright Dot Dark Dot Light Leakage Mura Check Panel Panel Change Image Sticking Dot Defect Brightness Spot Dot Defect Particle No display Check Power Board Change Power Board Check Main board Change Main board Check Panel Change Panel Check Keyboard Change Keyboard Check Line Connected Power board and Mainborad Noise Change
Defect Mode A Failure Analysis Repair Noise Check Single Cable Change Single Cable Flicker Check Main board Change Main board Check Panel Change Panel Check Main board Change Main board Check Panel Change Panel Check LVD Cable Change LVD Cable Check Single Cable Change Single Cable Check Main board Change Main board Check Panel Change Panel Check Power board Change Power board Check Main board Change Main board Check Keyboard Change Keyboard Check Single Cable Change Single Ca
Defect Mode A Failure Analysis LED Display Abnormal Abnormal Keyboard Abnormal OSD Repair LED Off Change Keyboard or Mainboard or wire LED Dark Change Keyboard or Mainboard LED Abnormal Change Keyboard or Mainboard or wire LED Flicker Change Keyboard or Mainboard or wire Check Wires Change Wires Check Main board Change Main board Check Keyboard Change Keyboard Check Main board Change Main board Check LVDS Wire Change LVDS Wire Next Testing Test Completed 30
Chapter 5 Connector Information The following figure shows the connector locations on the monitor board: 31
Chapter 6 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of Acer Altos AL1721.Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization). Please note that WHENORDERING FRU PARTS, you should check the most up-to-date information available on your regional web or channel. For whatever reasons a part number change is made, it will not be noted on the printed Service Guide.
Note: above picture show the description of the following component No.
5 No.
Function board 11 12 No.
20 Sponge 21 Mainframe screws No.
Chapter 7 Schematic Diagram INPUT 1/16W R301 100 1/16W C304 0.047uF 0 1/16W R302 100 1/16W C305 0.047uF FB303 0 1/16W R303 100 1/16W C306 0.047uF R304 470 1/16W C307 0.001uF R305 100 1/16W C308 0.047uF R306 100 1/16W C309 0.047uF R307 100 1/16W C310 0.
SCALER TSU16AK VCC3.3 FB401 DEL 3 3 3 3 3 3 3 3 VDVI R+ RG+ GB+ BCLK+ CLKR403 390 1/16W C401 0.1uF 40 41 43 44 46 47 49 50 52 66 67 RIN0 RIN0M GIN0 GIN0M SOGIN0 BIN0 BIN0M HSYNC0 VSYNC0 DDC1_CLK/GPO8 DDC1_DAT/GPO7 VCC3.3 VPO VCC2.5 FB402 2 600 OHM C405 10uF/16V VDD VCC2.5 VDD 600 OHM C414 10uF/16V + LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M C415C416C417C418 0.1uF0.1uF0.1uF0.
PANEL INTERFACE 4 4 PA[0..9] PB[0..9] PA[0..9] PB[0..
MCU VCPU 4 3 2 1 4 3 2 1 2 VCPU R602 C601 10K 10K .1u RP601 RP602 10Kx4 10Kx4 10u/16V MAX810STR (NC) 20 2 10 D601 R603 1N4148 INT VCPU C605 .1u U602 1 2 3 4 A0 A1 A2 GND VCC WP SCL SDA 8 7 6 5 24C16 R638 R604 R605 10K 10K R639 NC R608 R609 100 100 2 3 4 5 6 7 8 9 0 R615 R614 XTAL2 RESET P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 8051-PLCC 10K 10K 24 25 26 27 28 29 30 31 16 17 18 19 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 T0/P3.4 T1/P3.5 P3.6/WR P3.7/RD P4.3 INT0/P3.
Appendix Online Support Information This section describes online technical support services available to help you repair your Acer Systems. If you are a distributor, dealer, ASP or TPM, please refer your technical queries to your local Acer branch office. Acer Branch Offices and Regional Business Units may access our website. However some sources will require a user i.d. and password. These can be obtained directly from Acer CSD Taiwan.
