Acer T230H - Bmidh Wide Touch Screen Display User manual

Acer T230H
Service Guide
Service guide files and updates are available on the CSD web: for
more information,
Please refer to http://csd.acer.com.tw/
100%Recycled Paper

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. Acer Incorporated makes no
representations or warranties, either expresses or implied, with respect to the contents hereof and
specifically disclaims any warranties of merchantability or fitness for any particular purpose, Any Acer
Incorporated software described in this manual is sold or licensed “as is ”. Should the programs prove
defective following their purchase, the buyer (and not Acer Incorporated, its distributor, of its dealer)
assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages
resulting from any defect in the software.
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Pentium and Pentium II/III are trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.

Conventions
The following conventions are used in this manual:
Screen messages Denotes actual messages that appear on screen
Note Gives bits and pieces of additional information related to
the current topic.
Warning Alerts you to any damage that might result from doing or
not doing specific actions.
Caution Gives precautionary measures to avoid possible hardware
or software problems.
Important Reminds 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 BASICCONFIGURATION
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). These LOCALIZED FEATURES will NOT be covered
in this generic service guide. In such cases, please contact your regional offices or the responsible
personnel/channel to provide you with further technical details.
2. please not WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel. If, for whatever reason, a part number change is made, it will
not be noted in the printed Service Guide, for ACER-AUTHORIZED SERVICE 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 list provided by your regional Acer office to order FRU parts for repair and
Service of customer machines.

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. However, there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause harmful interference to radio or television reception,
Which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
4. Consult the dealer or an experienced radio/TV technician for help.
NOTICE:
1. The changes or modifications not expressly approved by the party responsible for compliance could
void
the user’s authority to operate the equipment.
2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission
limits.
3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized
modification to this equipment. It is the responsibility of the user to correct such interference.
As an ENERGY STAR® Partner our company has determined that this product meets the ENERGY STAR®
guidelines for energy efficiency.
WARNING:
To prevent fire or chock hazard, do not expose the monitor to rain or moisture. Dangerously high voltages
are present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.

PRECAUTIONS
zDo not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub,
Swimming pool or in a wet basement.
zDo 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
manufacture or sold with the monitor. If you mount the monitor on a wall or shelf, use a mounting
kit approved by the manufacture and follow the kit instructions.
zSlots and openings in the back and bottom of the cabinet area provided for ventilation. To ensure
reliable operation of the monitor and to protect it from overheating, be sure these openings are not
blocked or covered. Do not place the monitor on a bed, sofa, rug or similar surface. Do not place the
monitor near or over a radiator or heat register. Do not place the monitor in a bookcase or cabinet
unless proper ventilation is provided.
zThe monitor should be operated only from the type of power source indicated on the label. If you are
not sure of the type of power supplied to your home, consult your dealer or local power company.
zThe monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin.
This plug will fit only into a grounded power outlet as a safety feature. If your outlet does not
accommodate the three-wire plug, have an electrician install the correct outlet, or use an adapter to
ground the appliance safely. Do not defeat the safety purpose of the grounded plug.
zUnplug the unit during a lightning storm or when it will not be used for long periods of time. This will
protect the monitor from damage due to power surges.
zDo not overload power strips and extension cords. Overloading can result in fire or electric shock.
zNever push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire
or electric shock. Never spill liquids on the monitor.
zDo not attempt to service the monitor yourself; opening or removing covers can expose you to
dangerous voltages and other hazards. Please refer all servicing to qualified service personnel.
zTo ensure satisfactory operation, use the monitor only with UL listed computers which have
appropriate configured receptacles marked between 100-240V AC, Min. 3.5A.
zThe wall socket shall be installed near the equipment and shall be easily accessible.
zFor use only with the attached power adapter (output 12V DC) which have UL,CSA listed license

SPECIAL NOTES ON LCD MONITORS
The following symptoms are normal with LCD monitor and do not indicate a problem.
NOTES
zDue 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.
zYou may find slightly uneven brightness in the screen depending on the desktop pattern you use.
zThe LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.01% or less
such as a missing pixel or a pixel lit all of the time.
zDue to the nature of the LCD screen, an afterimage of the previous screen may remain after switching
the image, when the same image is displayed for hours. In this case, the screen is recovered slowly
by changing the image or turning off the Power Switch for hours.

Table of contents
Chapter 1 MONITOR FEATURE…………………………………………………………………… 9-26
Chapter 2 OPERATING INSTRUTION ……………………………………………………… 27-32
Chapter 3 MACHINE ASSEMBLY……………………………………………………………….. 33-38
Chapter 4 TROUBLE SHOOTING………………………………………………………………….39-47
Chapter 5 CONNECTOR INFORMATION………………………………………………….. 48-50
Chapter 6 FRU LIST……………………………………………………………………………………. 51-56
Chapter 7 SCHEMATIC DIAGRAM ……………………………………………………………....57-78

Chapter 1
Monitor Feature
Driving system TFT Color LCD
Size 23"W
Pixel pitch 0.2655(H) * 0.2655 (V)mm
Viewable angle 170(H) x 160 (V) degree
Brightness 300 cd/m²(typ.)
Contrast Ratio 1000:1(typ.)
LCD Panel Response time 5ms (Tr+Tf)
Video 15 pin mini D-SUB, 24 pin DVI and 14 pin HDMI.
Input Separate Sync H/V TTL
H-Frequency 30-80 KHz
V-Frequency 55 - 75 Hz
Display Color 16.7 million Colors
Maximum Dot Clock ® 165MHz
Max Resolution 1920 x 1080 @60HZ
Plug & Play VESA FPMPMI
ON Mode <58W
EPA ENERGY STAR OFF Mode <1W
Audio output
2 watts at 4 ohms speaker
/
1KHz – 15 KHz
Input Connector 15 pin mini D-SUB and 24 pin DVI-D ,14 pin HDMI.connector
Input Video Signal Analog : 0.7Vp-p,75OHM
Horizontal : 509.76mm
Screen Size (Active) Vertical : 286.74mm
Power Source 90~264 Vac, 47~63HZ
Environmental
Considerations
Operating Temp : 5 to 40 degree ;
Storage Temp : -30°C - +65°C
Operating Humidity : 20% to 80%
Weight (N.W.) TBDkg
Dimension 567.3 (W) x 398.9 (H) x 79.7 (D)(w/o base) mm(w/o packing)

Switch
* Power Switch
* MENU / ENTER
* /Volume
* /Volume
* AUTO / EXIT
* e-Color
External Controls :
* Contrast/brightness
* Focus
* Clock
* H.Position
* W.Position
* Language
* OSD Color temperature
* OSD Position & Timeout
* Auto Config
* Input
* Information
* Reset
* Exit
Regulatory Compliance CUL, FCC, TÜV, CE, TCO03.

Timings
The product has 34 memory modes in total. 26 modes are preset and 8 modes are user definable.
MODE NO. 1 2 3 4
RESOLUTION 720 x 400 640 x 480 640x480 640 x 480
Dot clock(MHz) 28.321 25.175 30.24 31.5
f h 31.469kHz 31.469kHz 35.0kHz 37.861kHz
H-Total ( us ) 31.78(900dots) 31.778 (800 dots) 28.571(864 dots) 26.413 (832 dots)
H-Sync ( us ) 3.813(108dots) 3.813 (96 dots) 2.116 (64 dots) 1.270(40 dots)
H-B-P ( us ) 1.907(54dots) 1.907 (48 dots) 3.175 (96 dots) 4.064(128 dots)
H-Active ( us ) 25.42(720dots) 25.422 (640 dots) 21.164 (640 dots) 20.317(640 dots)
H-F-P ( us ) 0.636(18dots) 0.636 (16 dots) 2.116 (64 dots) 0.762(24 dots)
f v 70Hz(70.087) 60Hz (59.940) 66.7 HZ (66.667) 72.809Hz
V-Total (ms ) 14.27(449 lines) 16.683 (525 lines ) 15.000 (525 lines ) 13.735(520 lines)
V-Sync ( ms ) 0.064(2 lines) 0.064 (2 lines ) 0.086 (3 lines ) 0.079(3 lines)
V-B-P (ms ) 1.112(35 lines) 1.049 (33 lines ) 1.114 (39 lines ) 0.739(28 lines)
V-Active ( ms ) 12.71(400 lines) 15.253 (480 lines ) 13.714 (480 lines ) 12.678(480 lines)
V-F-P ( ms ) 0.384(12 lines) 0.317 ( 10 lines) 0.086 (3 lines ) 0.237(9 lines)
SYNC. H/V -/+ - / - +/+ -/-
POLARITY Or -/-
SEP . SYNC Y Y Y Y
Remark Established timing Established timing Established timing

MODE NO. 5 6 7 8
RESOLUTION 800 x 600 800 x 600 800 x 600 1024 x 600
Dot clock(MHz) 36 40 50 49
f h 35.16kHz 37.879kHz 48.077kHz 37.34kHz
H-Total ( us ) 28.44(1024 dots) 26.40 (1056 dots) 20.80 (1040dots) 26.776 (1312 dots)
H-Sync ( us ) 2.00(72 dots) 3.200 (128 dots) 2.400 ( 120 dots) 2.122 (104 dots)
H-B-P ( us ) 3.56(128 dots) 2.200 ( 88 dots) 1.280 (64 dots) 2.939(144 dots)
H-Active ( us ) 22.22(800 dots) 20.00 ( 800 dots) 16.00 (800 dots) 20.898 (1024 dots)
H-F-P ( us ) 0.67(24 dots) 1.000 (40 dots) 1.120 (56 dots) 0.816(40 dots)
f v 56.25 60Hz (60.316) 72Hz (72.188) 60Hz
V-Total (ms ) 17.78(625 lines) 16.58 (628 lines) 13.85 (666 lines) 16.708( 624 lines)
V-Sync ( ms ) 0.06(2 lines) 0.106 (4 lines) 0.125 (6 lines) 0.267 (10 lines)
V-B-P (ms ) 0.63(22 lines) 0.607 (23 lines) 0.478 (23 lines) 0.294 ( 11 lines)
V-Active ( ms ) 17.07(600 lines) 15.84 (600 lines) 12.48 (600 lines) 16.065 ( 624 lines)
V-F-P ( ms ) 0.03( 1 line) 0.026 (1 line ) 0.770 ( 37 line ) 0.080 ( 3 lines)
SYNC. H/V +/+ + / + + / +
POLARITY
SEP . SYNC Y Y Y2
Remark Established timing Established timing

MODE NO. 9 10 11 12
RESOLUTION 1024 x 768 1024 x 768 1152 x 864 1280 x 960
Dot clock(MHz) 65 75 108 108
f h 48.363kHz 56.48kHz 67.5 KHz 60.000 KHz
H-Total ( us ) 20.677(1344 dots) 17.71(1328 dots) 14.815(1600 dots) 16.667 (1800dots)
H-Sync ( us ) 2.092(136 dots) 1.81(136 dots) 1.185(128 dots) 1.037 ( 112 dots)
H-B-P ( us ) 2.462(160 dots) 1.92(144 dots) 2.370(256 dots) 2.889 (312 dots)
H-Active ( us ) 15.754(1024 dots) 13.65(1024 dots) 10.667(1152 dots) 11.852 (1280 dots)
H-F-P ( us ) 0.369(24 dots) 0.32(24 dots) 0.593(64 dots) 0.889 (96 dots)
f v 60.004Hz 70.07Hz 75.06 Hz 60.00Hz
V-Total (ms ) 16.666(806 lines) 14.27(806 lines) 13.333(900 lines) 16.667 (1000 lines)
V-Sync ( ms ) 0.124(6 lines) 0.11(6 lines) 0.044(3 lines) 0.050 (3 lines)
V-B-P (ms ) 0.600(29 lines) 0.51(29 lines) 0.474(32 lines) 0.600 (36 lines)
V-Active (ms ) 15.880(768 lines) 13.60(768 lines) 12.800(864 lines) 16.000 (960 lines)
V-F-P ( ms ) 0.062(3 lines) 0.05(3 lines) 0.015(1 lines) 0.017 ( 1 line )
SYNC. H/V -/- -/- +/+ + / +
POLARITY
SEP . SYNC Y Y Y Y
Remark Established timing Established timing Standard timing

MODE NO. 13 14 15 16
RESOLUTION 1280 x 1024 1280 x 720 1280 x 800 1360 x 768
Dot clock(MHz) 108 74.481 83.5 85.5
f h 63.981kHz 44.760KHz 49.702KHz 47.712KHz
H-Total ( us ) 15.630 (1688 dots) 22.341 (1664dots) 22.341 (1664dots) 20.959 (1792dots)
H-Sync ( us ) 1.037 (112 dots) 1.826 ( 136 dots) 1.826 ( 136 dots) 1.31 ( 112 dots)
H-B-P ( us ) 2.296 (248 dots) 2.578 (192 dots) 2.578 (192 dots) 2.994 (256 dots)
H-Active ( us ) 11.852 (1280 dots) 17.186 (1280 dots) 17.186 (1280 dots) 15.906 (1360 dots)
H-F-P ( us ) 0.444 (48 dots) 0.752 (56 dots) 0.752 (56 dots) 0.749 (64 dots)
f v 60.020Hz 60.000Hz 59.81Hz 60.015Hz
V-Total (ms ) 16.661 (1066 lines) 16.667 (746 lines) 16.667 (746 lines) 16.662 (795 lines)
V-Sync ( ms ) 0.047 ( 3 lines) 0.067 (3 lines) 0.067 (3 lines) 0.126 (6 lines)
V-B-P (ms ) 0.594 ( 38 lines) 0.492 (22 lines) 0.492 (22 lines) 0.377 (18 lines)
V-Active (ms ) 16.005 (1024 lines) 16.086 (720 lines) 16.086 (720 lines) 16.097 (768 lines)
V-F-P ( ms ) 0.016 (1 line ) 0.022 (5 lines) 0.022 (5 lines) 0.063 (3 lines)
SYNC. H/V +/+ - / + - / + + / +
POLARITY
SEP . SYNC Y Y Y Y
Remark Standard timing Standard timing

MODE NO. 17 18 19 20
RESOLUTION 1440 x 900 1680 x 1050 1600 x 1200 1920 x 1080
Dot clock(MHz) 106.5 146.25 162 173
f h 55.935 65.29 75 67.158
H-Total ( us ) 17.878 (1904 dots) 15.316 (2240 dots) 13.333 (2160dots) 14.890 (2576dots)
H-Sync ( us ) 1.417 (152 dots) 1.203 ( 176 dots) 1.185 ( 192 dots) 1.156 ( 200 dots)
H-B-P ( us ) 2.178 (232 dots) 1.915 (280ots) 1.877 (304 dots) 1.896 (328 dots)
H-Active ( us ) 13.521 (1440 dots) 11.487 (1680 dots) 9.877 (1600 dots) 11.098 (1920 dots)
H-F-P ( us ) 0.751 (80 dots) 0.711 (104 dots) 0.395 (64 dots) 0.740 (128 dots)
f v 60Hz 60Hz 60Hz 60Hz
V-Total (ms ) 16.698 (934 lines) 16.679 (1089 lines) 16.667 (150 lines) 16.667(1120 lines)
V-Sync ( ms ) 0.107 ( 6 lines) 0.092 (6 lines) 0.040 (3 lines) 0.0744 (5 lines)
V-B-P (ms ) 0.447 ( 25 lines) 0.459 (30 lines) 0.613 (46 lines) 0.476 (32 lines)
V-Active (ms ) 16.090 (900 lines) 16.082 (1050 lines) 16.000 (1200 lines) 16.081(1080 lines)
V-F-P ( ms ) 0.054 (3 line ) 0.046 (3 lines) 0.013 (1 lines) 0.0447 (3 lines)
SYNC. H/V -/+ -/+ +/+ -/+
POLARITY
SEP . SYNC
Remark Standard timing Standard timing

MODE NO. 21 22
RESOLUTION 1920 x 1080 1920 x 1080
Dot clock(MHz) 148.5 138.5
f h 67.5 66.58
H-Total ( us ) 14.815 (2200 dots) 15.018 (2080 dots)
H-Sync ( us ) 0.296 (44 dots) 0.231 (32 dots)
H-B-P ( us ) 0.997 (148 dots) 0.578 (80 dots)
H-Active ( us ) 12.929 (1920 dots) 13.863 (1920 dots)
H-F-P ( us ) 0.593 (88 dots) 0.347 (48 dots)
f v 60Hz 60Hz
V-Total (ms ) 16.667 (1125 lines) 16.685 (1111 lines)
V-Sync ( ms ) 0.074 ( 5 lines) 0.075 ( 5 lines)
V-B-P (ms ) 0.533 ( 36 lines) 0.360 ( 24 lines)
V-Active (ms ) 16.000 (1080 lines) 16.219 (1080 lines)
V-F-P ( ms ) 0.059 (4 line ) 0.030 (2 line )
SYNC. H/V +/-
POLARITY
SEP . SYNC
Remark Detail timing

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
HDMI_INPUT
HDMI_IIC
SCALER
RTD2482RD
DVI_INPUT
D_SUB15_INPUT(R/G/B/HS/VS/SOG)
DVI-D
D-SUB15
EEPROM
EDID
24C02
EEPROM
EDID
24C02
DVI_IIC
D-SUB15_IIC
TO PANEL
PANEL CONNETER
LDO
TO 3.3V
LDO
TO 1.2V
5DVCC
V33S
V12S
SPEAKER
AUDIO AMP
APA2069S
AUDIO OUTPUT
EEPROM
24C16
BUTTON
BOARD
POWER
BOARD
HDMI
EEPROM
EDID
24C02
SERIAL
FLASH
AUDIO
INPUT
Monitor Block Diagram

PCB CONDUCTOR VIEW
Button Board

Main board

Power board