Acer AL1702W Service Guide 1
Service Guide Version and Revision Version A00 Release Date Revision History TPV model Initial Release T77HRDNBGWAFN Mar.
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.
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).
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, uses a mounting kit approved by the manufacturer and follow the kit instructions.
Table Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirements ……………………………………… 8 LCD Monitor General Specification ……………………………………… 9 LCD Panel Specification ……………………………………… 11 Support Timing ……………………………………… 13 Monitor Block Diagram ……………………………………… 14 Main Board Diagram ……………………………………… 15 Software Flow chart ……………………………………… 16 Main Board Layout ……………………………………… 18 Adjusting the viewing angle ……………………………………… 19 Rear Beze
Chapter 1 Monitor Features Introduction Scope This specification defines the requirements for the 17” 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. There is a build-in stereo audio amplifier with OSD control to drive a pair of speakers.
Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light : Dark room Viewing distance : 40 cm for LCD performance, 20 cm for LCD failures All specifications : ＞30 minutes Measuring equipment : Chroma 7120 signal generator or equivalent, directly Warm up time Connected to the monitor under test.
LCD Monitor General Specification 9
LCD Panel Specification General Specifications Mechanical Information 11
Optical Specifications 12
Supported Timing 13
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. Flat Panel and CCFL Drive.
Main Board Diagram LCD Interface Crystal 24MHZ MCU Scalar: RTD2025L QFN-48 RTD2120L-LF (Include: ADC, OSD etc) D-SUB OSD Control Connector Interface (Keypad) 15
Software Flow Chart 1 Y 2 3 N N 4 N 5 Y 6 N 7 8 Y Y 9 N 10 11 Y N 12 N 13 Y Y N 14 15 Y 17 18 N 19 Y 16 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. 9) Save the power key status into EEPROM. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light.
Main Board Layout Symbol Description Symbol X401 Description U201 AP1117E33LA U401 IC MCU RTD2120L-LF REALTEK CN201 WAFER 9P RIGHT ANELE PITCH U402 AZ431AN-A-E1 CN202 WAFER U501 SCALER IC RTD2025L QFN-48 CN601 CONN W TO B12P*2 P*2.
Adjusting the viewing angle 19
Rear Bezel Item 1. Description Item Power Cable 2.
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 Controls Item Description Item Description 1.
Front Panel Control 22
Adjusting the Picture How to Adjust a Setting 1. Press the MENU-button to activate the OSD window. 2. Press to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or > to change the settings of the current function. 5. To exit and save, select the exit function.
b.
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. This message will be flying. Cable Not Analog-Only Model: When the video cable is not connected, will show this message.
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. The DDC2B is a bi-directional data channel based on the I²C protocol.
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 to release base stand and gemel.
Fig 3 2. Remove the screws to remove the back cover.
3. Remove the screws to remove the shield . (Fig 5) Fig 5 4. Remove the bezel.
5. Remove the screws to remove the panel.
6. Remove the screw to remove the main board. (Fig 10) Fig 10 7. Remove the screws to remove the power board.
Fig 12 33
Chapter 4 Troubleshooting This chapter provides troubleshooting information for the AL1702W: 1. No Power No power Press power key and look if the picture is normal NG Please reinsert and make sure the AC of 100-240 is normal NG OK Reinsert or check the power section Measure U201 Pin 3=5V, U201 Pin 2=3.
2. No Picture No picture Measure U201 PIN2=3.
3. Panel Power Circuit Check the PPWR panel power relative circuit Q601, Q602 Check CN601 PIN 23-24 should have response from 0V to 5V When we NG switch the power switch from on to off In normal operation, when LED =green, R601 =5 V, If PPWR no-response when the power switch Turn on and turn off, replace the U401- RTD2120L OK Replace panel 4.
5. No Backlight Check C802 (+) =12V OK NG Change FB801,Check Q805 Q808, Q810 Check ON/OFF signal NG OK Check Interface board Check IC801 pin12=5V? NG Change Q805.
Chapter 5 Connector Information The following figure shows the connector locations on the monitor: 38
Chapter 6 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1702W.Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization). NOTE: Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel (http://aicsl.acer.com.tw/spl/).
Exploded Diagram (Model: AL1702W) 40
Part List Above picture show the description of the following component.
5 Power Board 6 Main Board 42
Chapter 7 Schematic Diagram Main Board CN201 1 2 3 4 5 6 7 8 9 CMVCC CMVCC CMVCC BKLT-VBRI BKLT-EN C_PANEL_INDEX Volume# Mute MVCC DIM# {4} PANEL_ID# Volume# Mute {4} {4} {4} FB202 NC CMVCC FB201 3 VIN CONN 2 + C204 C205 AP1117E33LA C203 100uF/25V + 1 C202 100uF/25V VOUT VSS 120 '07-01-10 change to Elite VCC3 U201 0.1uF/16V 0.1uF/16V '07-01-10 change to Elite Panel ID(3.3V PWM) Back light Dimming(3.3V PWM) VCC3 * BKLT-EN High ON(3.
DSUB_V {4} R301 100R 1/16W R303 100R 1/16W RTD_H RTD_V {5} {5} 2 2 R302 0R05 1/16W R304 ZD302 UDZS5.6B ZD303 UDZS5.6B 2.2K R305 2.2K 1/16W 1/16W C302 C303 FB302 22pF 1 R311 100R 1/16W DSUB_CONNECT {4} 16 RTD_B+ 13 DDC1_SDA 12 11 VGA_BVGA_B+ VGA_GVGA_G+ VGA_RVGA_R+ 2 DSUB_5V C305 5pF/50V {5} RTD_B- {5} RTD_G+ {5} RTD_G- {5} RTD_R+ {5} RTD_R- {5} R308 100R 1/16W C306 RTD_B- ZD305 ZD304 0.047uF UDZS5.6B UDZS5.
CMVCC D401 BAT54C(NC) 2 1 Reserve for powerBoard CMVCC=3V MCU_VCC 3 DSUB_5V CMVCC '06-11-24 D402 change Value from BAT54 to BAV70 C402 D402 BAV70 1uF 10V Q401 PMBS3904 MCU_VCC_S MCU_VCC C404 C412 R405 R406 R407 U403 3 U402 AZ431AN-AE1 1 2 3 4 R404 10K 1/16W 1 2 BAT54C NC VCC NC WC NC SCL VSS SDA 8 7 6 5 NC/4K7 1/16W NC/0.22uF NC/4K7 1/16W R403 1uF 10V 3.
{3} {3} {3} {3} TXO0+ RXO0- RXO0+ 37 DGND 39 38 TXO0- PGND {4} RTD_SCLK {4} R1.8DVCC 40 VCCK RTD_SD3/SDI RTD_SCLK 42 SCL 43 DDCSDA/PWM1/IRQ 44 41 CRYSTAR_OUT XIN 46 47 VCLK/RX2P TMDS_VDD RTD_SD3/SDI TXO3- RTD2025L QFN-48 AVS TXO3+ AHS TXE0- ADC_GND TXE0+ B- TXE1- 17 18 19 20 R1.8DVCC BJT_B R1.
LVDS Panel ( Normal Type ) {5} CN601 LVDS_O[0..9] {5} LVDS_E[0..
Power board 1/4W R918 100 1/4W R919 1 L904 BD901 KBP208G C912 0.001uF + ! 100 2 1/4W R920 2 C917 680uF/25V 3 1 - C918 680uF/25V C907 100uF/450V R904 300K 1/4W R905 NC 5 7 0.1uF 1K 1/4W R943 1K 1/8W 1K 1/4W Q903 PMBS3904 D906 SP10100 ZD901 NC R908 C906 1500pF/1KV 1 4 + ! C930 R946 + T901 9 ZD902 RLZ13B R944 ! 4 +12V C922 470uF/25V + + 3 R941 R945 1K 1/4W 1K 1/4W 1.1uH 2 100 C932 100K 2W R935 100 1/4W 3 R939 NC 1 1000pF C929 0.
CN801 1 2 C839 1000pF 6 FB801 F801 +12V 1 T801 POWER X'FMR 7 R817 10K 1/10W R855 33 1/4W D805 LL4148WP 3 4 2 CONN C801 15pF/3KV BEAD R821 1K 1/10W 1% C819 0.0022uF 2 3 1 0R05 1/4W R804 100 1/8W D810 NC Q808 PDTA144WK 2 R839 22R 1/8W ON/OFF C807 0.1uF/25V C824 0.1uF Q802 AM9945N-T1-PF 1 8 S D Q804 PMBS3906 1 C825 0.
