Acer B203W Service Guide 1
Service Guide Version and Revision Version A00 Release Date Revision History Apr.
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 ……………………………………… 10 Support Timing ……………………………………… 13 Monitor Block Diagram ……………………………………… 14 Main Board Diagram ……………………………………… 15 Software Flow chart ……………………………………… 16 Main Board Layout ……………………………………… 18 Installation ……………………………………… 19 Attaching/Removing the ba
Chapter 1 Monitor Features Introduction Scope This specification defines the requirements for the 20” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector and 24 pin DVI 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.
Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified.
LCD Monitor General Specification LCD Panel Input Driving system TFT Color LCD Active Display Area 433.41(H) x 270.90(V) Pixel pitch 0.258(H) x 0.258(W) Contrast Ratio 1000 : 1 Response time 5ms Luminance of White 300(Type) cd/㎡ Separate Sync. H/V TTL H-Frequency 30kHz – 83kHz V-Frequency 56-75Hz Viewing angle CR=10: H:170 / V:170 ( type) ；CR=5: H:176 / V:176 ( type) Display Colors 16.
LCD Panel Specification This specification applies to the 20.1 inch-wide Color TFT-LCD Module M201EW02. The display supports the WSXGA+ (1680(H) x 1050(V)) screen format and 16.7M colors (RGB 6-bits+Hi-RFC data). All input signals are 2 Channel LVDS interface compatible. This module does not contain an inverter card for backlight.
Electrical Characteristics TFT LCD Module－Power Specification Backlight Unit 11
Optical Specifications 12
Support Timing Horizontal Mode Resolution Total Vertical Nominal Sync Nominal Sync Nominal Frequency Polarity Freq. Polarity Pixel +/- 0.5kHz +/- 1 Hz Clock (MHz) 640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175 640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500 640x480@75Hz 840 x 500 37.500 N 75.00 N 31.500 800x600@56Hz 1024 x 625 35.156 N/P 56.250 N/P 36.000 800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000 800x600@72Hz 1040 x 666 48.077 P 72.188 P 50.
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. Flat Panel and CCFL Drive.
Main Board Diagram Crystal (X401) 14.
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 14 15 Y 17 18 N 19 Y 16 N 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 CN402 WAFER CN701 WAFER 9P RIGHT ANELE PITCH CN301 CONNECTOR U403 IC M24C04-WMN6TP SO8 CN101 D-SUB 15PIN U402 SST25LF020A-33-4C-SAE IC TSUM5PFHL-LF U701 AP1117E33LA U401 CN102 Description U103/U104/U105/ U106/U107 18 DVI 24PIN CONNECTOR IC AZC099-04S SOT23-6L
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. C: Connect the digital cable (only for dual-input models). (1) Make sure both the monitor and computer are switched off. (2) Connect one end of the 24-pin DVI cable to the back of the monitor and the other end to the computer's port. 2.
Attaching/Removing The Base Install: Align the base with the stand and push the base towards the top of the monitor, and then rotate the base clockwise. Tighten the screw clockwise. Remove: Reverse the steps to remove the base. Screen Position Adjustment In order to optimize the best viewing position, you can adjust the height/tilt/swivel/pivot of the monitor. Height Adjustment After pressing the top of the monitor, push the lock button towards right, then you can adjust the height of the monitor.
Tilt Please see the illustration below for an example of the tilt range. Swivel With the built-in pedestal, you can swivel the monitor for the most comfortable viewing angle. Monitor Pivot Adjust height to the top position before rotation the monitor. Rotate clockwise until the monitor stops at 90°.
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.
eColor Management (OSD) 23
How to Adjust a Setting 24
Adjusting the picture 25
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 HINGE ASSEMBLY as the following indicator. (Fig 1) Fig 1 2. Remove the back cover and bezel.
3. Remove the lamp connectors and the screw. (Fig 3-4) Fig 3 Fig 4 4. Remove the screws to remove the panel. Put attention to the LVDS cable.(Fig 5) Fig 5 5. Remove the screws to remove the main board and power board.
Chapter 4 Troubleshooting This chapter provides troubleshooting information for the B203W: 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 U701 Pin2=3.
2. No Picture (LED is orange) No picture NG The button if under X401 oscillate control NG Replace X401 waveform is normal OK OK Check reset circuit of U401 is normal Measure U701 Pin2=3.
3. Panel Power Circuit White screen Measure Q301 base NG is low level? NG OK OK Check CN301 is solder Replace X401 Check reset circuit of and Q301,Q302 is OK? Check Correspondent component. X401 oscillate waveform is normal U401 is normal NG NG OK OK Replace U401 Replace PANEL 32 Check Correspondent component.
4.
5.
W/LED No Backlight Check the 14V voltage input NG OK Check the adapter Check ON/OFF signal NG OK Check Interface board Check IC801 pin12=12V? NG Change Q805.
Chapter 5 Connector Information The following figure shows the connector locations on the monitor: D-SUB connector 36
DVI Connector 37
Chapter 6 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of B203W.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/).
Part List Above picture show the description of the following component.
4 Power Board 5 Main Board 6 FFC CABLE 40
Chapter 7 Schematic Diagram Main Board FB102 2K2 1/16W 5% C103 C104 2K2 1/16W 5% 22pF 22pF DSUB_5V CN101 16 DSUB_SCL 15 14 100R 1/16W 5% DDC1_SDA 13 R113 DSUB_SDA 12 11 17 100R 1/16W 5% VGA_G+ U103 VGA_R+ 1 2 3 6 5 4 I/O1 I/O4 GNDVDD I/O2 I/O3 1/3shield 2/4shield 0/5shield clk shield GND GND DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clk- JACK 8 15 6 7 14 16 R118 100R 1/16W 5% R119 100R 1/16W 5% R120 10K 1/16W 5% 2 2 R111 100R 1/16W 5% C108 0.
CN301 2 PA[0..9] PA[0..9] 2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PB[0..9] PB[0..9] LVA3P LVA3M LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9 CMVCC R302 4K7 1/16W 5% R303 C302 10K 1/16W 5% R304 0.
CMVCC FB702 300 OHM CN701 1 2 3 4 5 6 7 8 9 VCC3.3 SM340A D701 CMVCC CMVCC BKLT-VBRI BKLT-EN PANEL_ID# Volume# Mute VCC1.8 C710 0.1uF 16V MVCC + C704 0.1uF/16V Q702 KN2907AS R705 2 10K 1/16W 5% PANEL_ID# 2 Q703 KN2907AS Mute 2 R706 CONN DGND C713 NC C701 0.1uF/16V C712 NC BKLT-VBRI VCC3.3 R708 NC lock type 100uF25V R709 NC R710 NC Volume# C705 adj_BACKLIGHT 2 1K 1/16W 5% R701 0R05 1/4W 1,2,3 VCTRL VCC3.3 VCC3.
VCC1.8 VDDP 4 VCC3.3 FB401 0 OHM +-5% 1/8W + C403 C402 10uF/50V C404 C406 0.1uF/16V Del C209 10uF/50V C405 0.1uF/16V VDVI VMPLL VPLL AVDD VDDP VDDC RX2P RX2N RX1P RX1N RX0P RX0N RXCP RXCN DDC2_SDA DDC2_SCL 3 4 6 7 9 10 12 13 100 1 0.1uF/16V 26 C417 VCC3.
Power board 100 OHM 1/4W R920 2 ! T901 1 C917 680uF/25V 3 + + + C922 NC C918 680uF/25V 1 D900 FR107 6 4 2 D901 FR103 R907 NC + 1 ! R915 100K OHM 1% 1/8W ! R902 LD7552BPS + 3 150R 1/8W D905 SP1060 ZD922 RLZ5.1B ZD921 RLZ18B R927 3.6K OHM 1% 1/10W IC903 PC123X2Y FZOF ! R925 1K 1/8W R938 10K 1/8W FB901 BEAD D916 D915 LL4148 LL4148 C924 0.1uF R901 680K OHM 1/4W 680K OHM 1/4W C928 0.001uF R914 0.
E C838 1500pF R856 15 OHM 1/4W F801 0R05 1/4W C802 470uF/25V + R804 100R 1/8W Q801 PMBS3904 R823 3.6K OHM 1% 1/10W Q808 PDTA144WK Q804 PMBS3906 1 ON/OFF 4 3 2 2 Q805 PDTC144WK C824 0.1uF R839 10 OHM 1/8W 1 D810 NC R855 15 OHM 1/4W Q802 AM9945N-T1-PF 5 G D S D G D S D 6 3 C B 1 2 2 D805 BAW56 1 1 1 2 R828 10K 1/10W 1% 3 C841 1500pF R858 15 OHM 1/4W R850 10 OHM 1/8W C803 470uF/25V + C805 0.1uF 4 R827 1K 1/10W 1% 3 2 1 Q806 PMBS3904 1 2 C823 0.
+5V_Audio add FB602 FB602 +5V 1 +5V_Audio 2 BEAD FB601 ROUT+ RIN- ROUT- FADE# SE/BTL# 330 OHM +-5% 1/10W R613 EAR-LOUT EAR-ROUT C615 C616 NC NC 16 15 19 13 C613 56G 616 40 R605 C614 100uF/25V LOUT+ ROUT+ 1uF/25V R615 1K 1/10W 5% 47 SEL-BTL R603 R604 100K OHM 1/10W 100uF/25V BTL mode:Low SE mode:High Mute mode:Low +5V_Audio 10K 1/10W 5% C605 R614 1K 1/10W 5% CONN +5V_Audio + R601 330 OHM +-5% 1/10W 2 AGND PGND NC 20 10K 1/10W 5% VOLUME PGND 18 17 Q601 MUTE SH
Key board ZD001 2 UDZSNP5.6B 1 add ZD001 and ZD002 for ESD solution LED001 LED 2 3 1 2 CN001 1 2 3 4 5 6 4 ZD002 LBADC1 LBADC2 POWER_Key LED_BLUE# LED_RED# 1 UDZSNP5.
