Acer AT2230 & AT2231 Service Guide 1
Service Guide Version and Revision Version Date Revision History TPV Model Name A00 Jul.-23-08 Initial release E228M3NBWAZANN A01 Aug.
Copyright Copyright 2003 Acer Technology Corp. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic machine readable form without prior written permission of Acer Technology Corp. ACER AT2230 & AT2231 Service Manual. Printed in Fujian. 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 General Specifications ……………………………………… 7 LCD TV Description ……………………………………… 8 Precautions And Notices ……………………………………… 8 D-SUB / HDMI Digital connector ……………………………………… 9 Factory Preset Display Modes ……………………………………… 10 LCD TV Panel Specification ……………………………………… 11 Panel Features ……………………………………… 11 General Specifications ……………………………………… 11 Mechanical Specifications ……………………………………… 11 Optical Specifications ………………………
Chapter 1 Monitor Features General Specifications 7
LCD TV Description The LCD TV will contain a main board, a power board a function keyboard and an IR board. The main board and power board will house the flat panel to control logic I2C bus, DDC, brightness control logic for LCD panel, DC-DC conversion to supply the appropriate power to the whole board and transmitting TTL level signals into LCD Module to drive the LCD display circuit. The inverter board will drive the five CCFLs (Cold Cathode Fluorescent Lamp).
D-SUB PIN Distribution This procedure gives you instructions for installing and using the LCD TV display. (1) Position the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground.
Factory Preset Display Modes: Analog RGB Signal Timing 10
LCD TV Panel Specification The M220Z1-L03 model is a 22 inch wide TFT-LCD module with a 4-CCFL Backlight Unit and a 30-pin 2ch-LVDS interface. This module supports 1680 x 1050 WSXGA+ (16:10 wide screen) mode and displays up to 16.7 millions colors. The inverter module for the Backlight Unit is not built in.
Optical Specifications Test Conditions Optical Specifications 12
Chapter 2 Connecting Peripherals Front panel controls 13
Remote Control & OSD Operating instructions Chapter 3 Using the Remote Control 5 e (Empowering Technology) Press to activate and select the scenario mode. See page 9. 6 MENU Press to open or close the Menu. 7 Back Press to back to previous Menu. 8 Directional keys/OK 9 MPX Press to select the audio type, displayed in the top right-hand corner (mono, stereo, bilingual). 10 EPG (No function for these models) 11 MUTE Press to toggle audio on and off.
Teletext 1 Colour buttons (R/G/Y/B) Operates corresponding button on the teletext page. 2 INDEX Press to go to the index page. 3 SUBTITLE Press to view subtitles on the screen. 4 REVEAL Press to reveal hidden teltext information. 5 SUBPAGE Press to access the teletext’s subpages directly. 6 SIZE Press once to zoom teletext page to 2X. Press again to resume. You can also use navigation key (up and down) to zoom-in or zoom-out the teletext page.
Using the OSD Menus 16
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. The host can request EDID information over the DDC2B channel.
Chapter 4 Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. The tools listed as below are that we may use during this procedure: 1. A proper screwdriver 2. A pair of glove 3. A pliers 4. A plastic knife Disassembly Procedure Disassemble the Base 1. Put the monitor on a clean soft cloth with panel facing to the table. (Fig 1) (Fig 1) 2. Remove the screws to remove stand base.
Disassemble the back cover 1. Remove four screws to remove back cover.
Remove the main board, power board and key board. 1. Release all the connecting wires marked in blue for these boards. (Fig 6) 2. Remove the screws marked in red to remove power board and main board. (Fig 6) 3. Remove the key board. (Fig 7) (Fig 6) Key board (Fig 7) Disassemble the speaker. Remove the four screws marked in red to remove the speakers.
Remove the main frame Remove the four screws marked in red to remove the main frame.
Chapter 5 Trouble Shooting No picture (LED orange) No picture OK Check key board/IR board NG Change key board/IR board OK NG Check the power supply circuit Check 24V power supply OK NG Check main board Standby power supply Change U707 OK Check U401 NG Change U401 OK NG Check I2C communication Check I2C bus 27
Abnormal display Reset source Check the source OK NG Check signal filter circuit Replace the filter or resistance OK OK NG RF signal Check input OK Check LVDS cable OK NG Replace LVDS cable OK Check panel Check TV system setup Check Tuner OK NG Replace panel 28 Replace Tuner
No sound Check the source NG Reset source OK Check if mute OK Check input signal Check TV TV SIF system NG OK NG OK Check U601 Change TU101 Check TU101 Check U401 Change U401 NG Change U601 OK NG Check speaker NG Change speaker 29 Reset TV system
No Power (No LED indicator) Check CN902 pin10,11 = 12V NG Check AC line volt 110V or 220V NG OK Check AC input Check the voltage of C905 (+) OK NG Check bridge rectified circuit and F901 circuit Check start voltage for the pin8 of IC901 OK NG Check R904, R905 and Change IC901 Check the auxiliary voltage is bigger than 10V and smaller than 20V OK NG 1) Check IC901, D902, C908 2) Check IC902 OVP circuit Check IC901 pin5 PWM wave OK NG Check IC901 Check T901, Q903, D906, D904, ZD920, IC9
W / LED, No Backlight Check 12V input NG Check adapter or MB OK Check ON/OFF NG Check Interface board OK Check IC801 NG Change ON/OFF OK Check IC801 PIN1.
Key Board OSD is unstable or not working N Is Key Pad Board connecting normally? Connect Key Pad Board Y N Is Button Switch normally? Replace Button Switch Y N Is Key Pad Board Normally? Y Check Main Board 32 Replace Key Pad Board
Chapter 6 Upgrade Firmware 1. Using USB port connecting PC & MST99980 Board via ISP board as below. Turn on the monitor. 2. Run the program ISP_Tool.
3. Click the button “Connect”, if it can identify the type of the device, please click the “Dis Con” and then click the “Connect” again.
4. Click the button “Read” to load the software file and then click the “Auto”.
5. When the picture showed as below, we can click the “run” to finish to upgrading.
White-Balance, Luminance Adjustment Chapter 7 Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. YPbPr Mode display adjustment White balance adjustment (B) General set-up: Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer Quantum Data Pattern Generator 802G, 802BT or equivalent instrument Input requirements: Input Signal Type: YPbPr signal 1. 720P mode, TVBar100 pattern by 802G or 802BT. 2.
store those values to NVM. White- Balance alignment: 1. Select source as “HDMI1” 2. Apply Flat pattern (100% white pattern), at FAC mode menu, select Factory -> Picture -> Colour Temp item 3. Set color temperature to “Standard”. 4. Adjust the R Gain, G Gain, B Gain values to meet “Standard” color coordinates specification below. Then store those values to NVM. 5. Set color temperature to “Warm”. 6. Adjust the R Gain, G Gain, B Gain values to meet “Warm” color coordinates specification below.
PC mode display adjustment WHITE-D adjustment (B) General set-up: Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer Chroma 2250 or equivalent PC signal generator Input requirements: Input Signal Type: PC VGA signal 1024X768/60Hz PC mode with PGCWRGB pattern. (see pattern-1) Input Signal Strength: 0.7 Vp-p linear voltage. Input Injection Point: PC D-SUB input Pattern-1 Alignment method: Initial Set-up: 1. Select source as “VGA”. 2.
Chapter 8 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AT2230 & AT2231.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.
5 Main Board 6 Key Board 7 IR Board 8 Speaker 42
EDID Data DDC DATA for D-Sub Input 43
Chapter 9 PCB Layout Main Board 44
Power Board 46
Key Board IR board 47
Chapter 10 Schematic Diagram Main Board +12V V5A L102 300 OHM R187 27 OHM 2W R188 33 OHM 2W L101 300 OHM U103 AP1084D50L13 3 1 + C160 C158 0.1uF 10UF16V V5B R189 0 OHM 1/10W 2 INPUT OUTPUT V5C ADJ/GND L103 300 OHM + C161 0.1uF C159 47uF/16V V5C TV-CVBS R191 NC Q107 NC R190 47 OHM 1/16W R194 NC V5B + I2C_SCL I2C_SDA R200 100 OHM 1/10W +5V 4 5 6 13 TU101 C167 NC VIDEO_OUT 4 C166 0.047uF TUNER_CVBS 8 R199 NC R203 47 OHM 1/16W SCL SDA C163 47uF/16V AF_O/P SIFSND AS_TU N.C N.
2 1 2 1 D114 BAV99 D115 BAV99 D116 BAV99 3 3 CVBS INPUT 3 D113 BAV99 3 2 1 2 1 +5V CN106 SCART C123 47pF C124 47pF C125 47pF 15 Red I/O 14 R144 75 OHM 1/8W C122 47pF 17 16 R143 75 OHM 1/8W 19 18 R142 75 OHM 1/8W R141 75 OHM 1/8W 21 20 R137 47 OHM 1/16W R138 47 OHM 1/16W R139 47 OHM 1/16W R140 47 OHM 1/16W C118 0.047uF C119 0.047uF C120 0.047uF C121 0.
R831 0 OHM 1/16W TXD 8,12 R832 0 OHM 1/16W RXD 8,12 17 CN107 DB15 1 6 2 7 3 8 4 9 5 10 11 12 13 14 15 R11047 OHM 1/16W C107 0.047uF G R11147 OHM 1/16W C108 0.047uF B R11247 OHM 1/16W C109 R114 R115 R116 75 OHM 1/8W 75 OHM 1/8W 75 OHM 1/8W VPORT0603100KV05 VPORT0603100KV05 VPORT0603100KV05 VGA5V D103 D104 D105 D102 16 R RIN+ 0.
24C02=>EDID code must be upto 256byte space, for HDMI interface. HDMI-1 CN502 TMDSD2TMDSD2+ TMDSD1TMDSD1+ TMDSD0TMDSD0+ DDC_CLK_IN1 DDC_DAT_IN1 CEC_INA HPD1 U502 8 7 6 5 R514 100 OHM 1/16W 100 OHM 1/16W R515 D507 19 13 16 15 D508 D509 2 3 90 ohm 4 L510 3 1 HDMI_02HDMI_02+ 6 4 HDMI_01HDMI_01+ 1 2 9 7 HDMI_RXC+_1 5 4 IN4 IN3 2 1 3 90 ohm L511 Q504 PMBS3904 C501 0.
12V_SB +5V_STB +3.3_STB VPANEL FB101 Q101 FB102 1 2 3 4 300 OHM C104 FB103 NC C105 1uF Control port FB104 R102 10K OHM 1/10W 0.1uF S S S G D D D D 8 7 6 5 300 OHM + C103 0.1uF C102 22uF/16V AM9435P-T1-PF NC R103 100K OHM 1/10W R104 2K OHM 1/10W R105 8 Q102 PMBS3904 PANPWR_ON 4.
VDDP R830 100 OHM 1/10W R500 NC 3 VCC +5V_STB U407 R405 NC R406 NC TUNER_CVBS 3 TUNER_CVBS VCOM0 VCOM0 “ For CVBSOUT Application,please refer to page6 (Video interface or SCART interface) 3 SIFM0 3 3 4 4 AUL0_AV AUR0_AV AUL1 AUR1 R410 0 OHM 1/10W 10 AUL2 10 AUR2 3 AUL0_COM 3 AUR0_COM SIFP0 62 64 SIFM0 65 AUVREF 69 AUVRADP 68 AUVRADN 67 AUL0_AV71 AUR0_AV 72 AUL1 73 AUR1 74 AUCOM 75 C411 76 0.
2M X 16bit X 4BK U402 NC/DDR_128Mb_TSOP66 MADR0 RP406 MADR1 MADR2 MADR3 MADR4 RP407 MADR5 MADR6 MADR7 MADR8 RP408 MADR9 MADR10 MADR11 8 8 8 WEZ CASZ RASZ 8 8 DQS1 DQS0 8 8 BA0 BA1 8 8 MCLK MCLKZ 1 100 OHM +-5% 1/16W ADR0 2 ADR1 3 ADR2 4 ADR3 1 100 OHM +-5% 1/16W ADR4 2 ADR5 3 ADR6 4 ADR7 1 100 OHM +-5% 1/16W ADR8 2 ADR9 3 ADR10 4 ADR11 29 30 31 32 35 36 37 38 39 40 28 41 WEZM CASZM RASZM 21 22 23 WEZ CASZ RASZ R458 R459 R460 22 OHM 1/10W 22 OHM 1/10W 22 OHM 1/10W DQS1 DQS0 R461 R462 56 OHM
FB603 300 OHM L601 22uH +-25% L602 22uH +-25% C620 0.22uF To SPK_L CN602 1 2 3 FB605 300 OHM C623 0.01uF C601 0.001uF V5 AUDIO_PWR V5 + Placement Near MST.IC DAC output Pad 36K OHM 1/10W C629 1uF L603 C662 0.22uF 47K OHM 1/10W L604 2 1 R648 CONN C664 47K OHM 1/10W R627 +12VHP R634 R636 10K OHM 1/10W 4.7K OHM 1/10W R643 R637 10K OHM 1/10W R645 Q607 10K OHM 1/10W PMBS3906 Q609 LineMute PMBS3904 EarMuteB 10K OHM 1/10W C665 0.001uF 22uH +-25% Q605 10K OHM 1/10W PMBS3904 R622 4.
C790 0.001uF C724 0.001uF C725 0.001uF U702 +5V L + R746 C714 15 OHM 1/10W 0.1uF SW CE FB 5 L702 +3.3V for AVDDA 10uH 6 +3.3_STB R755 D701 SR34 1 2.2 OHM 1/10W R751 180K OHM 1/10W FB701 100 OHM + C788 C789 C710 0.1uF 0.1uF 330UF16V VA +24VP +3.3V for VDDP R749 10M OHM 1/10W +3.3_STB 1 2 3 4 6.2K OHM 1/10W R718 U701 3 VIN 1 AM9435P-T1-PF C735 0.1uF C738 1uF Q703 PMBS3904 2 VOUT Power Connector Connect to Power Board C717 C718 C719 C720 C721 C722 C723 0.1uF 0.1uF 0.1uF 0.1uF 0.
+3.3V Q403 RK7002 I2C_SDA 3,8 +3.3V +3.3_SUB Q404 RK7002 FB404 1 I2C_SCL 3,8 2 220 OHM ISP PORT C439 C440 + 0.1uF25V 10UF16V +3.3_SUB +3.3_SUB C441 0.1uF25V CN403 1 2 3 4 +3.3_SUB R477 10K OHM 1/16W 19 CONN R807 VDD U406 R808 4.7K OHM 1/16W OSCO 4.7K OHM 1/16W 4.7K OHM 1/16W OSCI R810 6 PWR_ON RXD TXD HS_RGB VS_RGB SUBCEC R813 R806 R805 4.7K OHM 1/16W 4.7K OHM 1/16W VSS 5,8 5,8 5,8 5,8 0 OHM 1/16W 0 OHM 1/16W 0 OHM 1/16W 0 OHM 1/16W 0 OHM 1/16W 0 OHM 1/16W R483 R484 4.
Power board R9 18 1 00R 1/4W ! 4 1 ! + R90 6 1 K 1/4W + B D9 01 GBU4 08 93 G 5046 0900 R904 8K 2 1/4W 2 D9 01 FR107 R905 8K 2 1/4W D90 2 FR1 03 9 3G 603 8T 5 2T 4 - ZD9 03 P 6K E44 0A + 1 4 2 3 4 2 3 R94 1 SG902 SPARK GAP 10 0K 1/8W 1% RT COMP NC 12 11 CS VCC GND OUT D909 6 R91 2 10R 1 /8 W LL41 48 5 R907 10R 1 /8 W LD7575APS + C922 47 0uF/25 V C92 0 0.
PT 802 8 R POWER X'FM 6 CN801 CONN C819 56pF/3KV R805 100R 1/10W LV1 D801 LL4148 1 Q805 AO4616 ON/OFF 2 2 ZD802 RLZ5.6B R803 D802 R804 LL4148 5K1 1/10W R807 100R 1/10W ZD803 RLZ5.6B 1 1 5K1 1/10W C801 0.047uF 1 L801 4 G S G S D D D D 1 DRV1 PGND VDDA DRV2 TIMER GNDA DIM CT ISEN SSTCMP VSEN LCT OVPT ENA NC1 NC2 16 15 14 13 12 11 10 9 1 L802 4 2 C811 0.1uF 3 D806 BAV70 R829 6K8 1/8W 33K 1/8W R837 6K8 1/10W C810 0.
Key board NOTE Pull up R = 3.9K ohm to 3.3V KEY1 SOURCE 2.44V C001 0.1uF/25V MENU 3 5 1.04V 1.73V 4 4 SW001 2 5 1 3 SW002 2 R001 11KOHM1/10W VOL- 1 0.35V 4 5 3 SW003 2 R002 4.3K OHM 1% 1/10W VOL+ 1 4 5 2 R003 1.8K OHM 1% 1/10W CN001 1 2 3 4 KEY2 POWER 2.44V CONN C002 0.1uF/25V CH- CH+ 1.73V 4 3 4 1.04V 3 4 3 LOCK TYPE 5 SW005 2 1 R005 11KOHM1/10W PCB key location ( Front ) Power Source Menu CH- CH+ Vol- Vol+ 60 5 2 SW006 1 5 2 R006 4.
