Acer AL2103W Schematic
AL2103W (Acer)
L22HCTN-URC(VGA + DVI)
21.6” wide Color TFT LCD Display
Copyright
Copyright © 2008 by Acer Corporation. 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 Corporation.
Disclaimer
Acer makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any
particular purpose. Further, Acer reserves the right to revise this publication and to make
changes from time to time in the contents hereof without obligation of Acer to notify any
person of such revision or changes.
Trademarks
Acer is a registered trademark of Acer Corporation.
All other trademarks used within this document are the property of their respective owners.
Product disposal at end of product life
The lamp in this product contains mercury. Please dispose of in accordance with local, state
or federal laws.
2
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
3
TABLE OF CONTENTS
1. Precautions and Safety Notices ..........................................................................05
2. Specification ..........................................................................................................06
3. Front Panel Function Control Description ..........................................................09
4. Circuit Description................................................................................................12
5. Adjusting Procedure.............................................................................................15
6. Trouble Shooting Flow Chart ..............................................................................37
7. Block Diagrams .................................................................................................... 39
8. Schematic Diagrams .............................................................................................41
9. PCB Layout Diagrams ......................................................................................... 45
10. PCB Main Board & PI Board List....................................................................... 47
4
1. Precautions and Safety Notices
1.1 Safety Precautions
Although LCD monitors are displays without high voltage as that in the CRT monitors, the
following precautions still should be taken care of.
1 Observe all cautions and safety related notes located inside the display cabinet and on
the display chassis.
2 Operation of these displays outside the cabinet or with the cover removed involves a
shock hazard from the display backlight’s inverter. Work on the display should not be
attempted by anyone who is not thoroughly familiar with precautions necessary when working
on high voltage equipment.
3 Before returning a serviced display to the customer, a thorough safety test must be
performed to verify that the display is safe to operate without danger or shock.
1.2 Product Safety Notice
1 Many electrical and mechanical parts in this chassis provide special visual safety
protection. The protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc.
2 Before replacing any of these components, read the parts list included in this manual
carefully. The use of substitute replacement parts, which do not have the same safety
characteristics, as specified in the parts list may create shock, fire or other hazards, and
hence should be prohibited.
1.3 Service Notes
1 When replacing parts or circuit boards, wrap the wires around terminals before soldering.
2 Keep wires away from high temperature components.
3 Keep cable and their shielding in their original position so as to reduce interference.
Abbreviations and Acronym
DDC Display Data Channel
DPMS Display Power Management System
EPA Environment Protection Agency
ESD Electrostatic Discharge
I2C-Bus Inter-IC Bus1
LCD Liquid Crystal Display
LED Light Emit Diode
TTL Transistor-Transistor Logic
VESA Video Electronics Standards Association
5
2. Specification
AC Power Input Output 90Vac ~ 264Vac Full Range, 50/60 Hz.
<1.5A@110V; <0.8A@230V
Power Consumption LED color is Green: < 49 W
LED color is Amber: < 2 W
LED color is Dark: <1 W
Signal Input
Video Signals
Sync Signals
Input Frequency
Connector
Resolution (Max.)
Recommended mode
Pixel dot clock
Environment
Operating Conditions
RGB Analog (75 ohms, 0.7 / 1.0 Vp-p),
DVI (TMDS, 100 ohms)
Separate Sync / Composite Sync / SOG
Fh = 24 – 82 kHz ; Fv = 50 – 75 Hz
VGA 15-pin Mini D type (detachable cable)
DVI-D (support HDCP / DDC/CI)
Internal Power Adapter, 3-pin plug (CEE22)
1680 x 1050 / 60 Hz
1680 x 1050 / 60 Hz
160 MHz (maximum)
Temperature
Non Operating Condition
Temperature
Operating Relative Humidity
Non operating Relative Humidity
Operating Altitude
Non Operating Altitude
Pedestal Tilt
Forward
Backward
Panel Characteristics
Panel Type
Pixel Format
Pixel Pitch
Pixel Configuration
Display Mode
Display Area
5℃ to 35℃
-20℃ to 60℃
20% to 85%.
5% to 95%.
0 to 6,561.68 feet (2000m) .
0 to 40,000 feet (12192m).
5º
20º
CLAA220WA01 (CPT)
1680 (H) x 1050 (V) (1 pixel = R+G+B dot)
0.27675 mm (H) x 0.27675 mm (V)
R、G、B vertical stripe
Normally white, TN
464.94 (H) × 290.5875 (V) (21.6-inch diagonal)
6
Faceplate Coating
Hard coating (3H), AG (Haze 25%)
Response Time
Luminance
Contrast Ration
Display Color
Backlight Unit
5ms
300 cd/m² (typical)
1000:1 (typical)
16.7M( 6bits+Hi-FRC)
CCFL, 4 tubes(top × 2/bottom × 2) , Edge light
Viewing Angle(H/V) H: 170 º / V:160 º
Plug and Play DDC/2B and DDC/CI
Power Management Complies with EPA and DPMS
Dimension (W x H x D) W :509.76 mm (20.1 inch)
H : 431.55mm (17 inch)
D : 225mm (8.9 inch)
Monitor Weight
4.5±0.2 Kg(9.90 lbs)
7
2.1 Model Configuration Table
# Model Panel CPT Scalar IC Scalar board Power board Key
AL2203WQ b
1
(VGA)
AL2203WQ bm
2
(VGA / Audio)
AL2203WQ bd
3
(VGA / DVI)
AL2203WQ bmd
4
(VGA / DVI / Audio)
AL2103W
5
(VGA)
CLAA220WA01
Warehouse code
:032/073
CLAA220WA01
Warehouse code
:032/073
CLAA220WA01
Warehouse code
:032/073
CLAA220WA01
Warehouse code
:032/073
CLAA220WA01
Warehouse code
:032/073
M-Star
TSUMU18B
WJ-LF
M-Star
TSUMU18B
WJ-LF
M-Star
TSUMU58B
WHJ-LF
M-Star
TSUMU58B
WHJ-LF
M-Star
TSUMU18B
WJ-LF
PWB-1195
PWB-1195
PWB-1195
PWB-1195
PWB-1195
PWB-1207
PWB-1220
PWB-1220
PWB-1207
PWB-1220
PWB-1207
PWB-1220
PWB-1207
PWB-1220
PWB-1207
AL2103W
6
(VGA / DVI)
CLAA220WA01
Warehouse code
:032/073
M-Star
TSUMU58B
WHJ-LF
PWB-1195
PWB-1207
PWB-1220
# Model VGA Cables DVI Cable AUDIO Cable
AL2203WQ b
1
(VGA)
AL2203WQ bm
2
(VGA / Audio)
AL2203WQ bd
3
(VGA / DVI)
AL2203WQ bmd
4
(VGA / DVI / Audio)
AL2103W
5
(VGA)
Wire Ass'y VGA Signal Cable
20276(3+6) L=1800mm
D-SUB Core:14.2*28.5*6.35
Wire Ass'y VGA Signal Cable
20276(3+6) L=1800mm
D-SUB Core:14.2*28.5*6.35
Wire Ass'y VGA Signal Cable
20276(3+6) L=1800mm
D-SUB Core:14.2*28.5*6.35
Wire Ass'y VGA Signal Cable
20276(3+6) L=1800mm
D-SUB Core:14.2*28.5*6.35
Wire Ass'y VGA Signal Cable
20276(3+6) L=1800mm
D-SUB Core:14.2*28.5*6.35
DVI Signal Cable
UL20276
#30*P+1P+EAM*4
#30*1P#30*3C+AB
L=1800+-50mm
DVI(18+1)Core
DVI Signal Cable
UL20276
#30*P+1P+EAM*4
#30*1P#30*3C+AB
L=1800+-50mm
DVI(18+1)Core
Wire Ass'y Audio Cable
2547#26 Stereo3.5Plug
L=1500mm
Wire Ass'y Audio Cable
2547#26 Stereo3.5Plug
L=1500mm
8
AL2103W
6
(VGA / DVI)
Wire Ass'y VGA Signal Cable
20276(3+6) L=1800mm
D-SUB Core:14.2*28.5*6.35
DVI Signal Cable
UL20276
#30*P+1P+EAM*4
#30*1P#30*3C+AB
L=1800+-50mm
DVI(18+1)Core
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2.2Timing Supported ( Pre-set Timing Table )：
Preset Pixel Format
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
60Hz 640 x 480 VGA 31.469//59.94 - - 25.175
67Hz 640 x 480 VGA 35.000//66.667 - - 30.240
72Hz 640 x 480 VGA 37.861//72.809 - - 31.5
75Hz 640 x 480 VGA 37.50//75.00 - - 31.5
70Hz 720 x 400 VGA 31.47//70.08 - + 28.321
56Hz 800 x 600 VESA 35.156//56.250 + + 36.000
60Hz 800 x 600 VESA 37.88//60.32 + + 40.000
72Hz 800 x 600 VESA 48.077//72.188 + + 50.000
75Hz 800 x 600 VESA 46.88//75.00 + + 49.500
75Hz 832 x 624 MAC 49.72//74.55 ± ± 57.283
60Hz 1024 x 768 VESA 48.36//60.00 - - 65.000
70Hz 1024 x 768 VESA 56.476//70.069 - - 75.000
75Hz 1024 x 768 VESA 60.02//75.03 + + 78.750
75Hz 1152 x 864 VESA 68.68//75.06 ± ± 108.000
75Hz 1152 x 870 MAC 68.68//75.06 ± ± 100.000
60Hz 1280 x 720 VESA 44.772//59.855 - + 74.50
60Hz 1280 x 768 VESA 47.776//59.870 - + 79.500
Horz Freq (kHz)
Vert Freq (Hz)
Horz
Polarity
Vert
Polarity
Pixel Clk
(MHz)
18
19
20
21
22
23
24
25
26
27
Mode 1,7,11,16,17,20,21,23,24,26,27 MUST be inspected after repairing
75Hz 1280 x 768 VESA 60.289//74.893 - + 102.250
60Hz 1280 x 800 49.68//60.0 - + 83.462
60Hz 1280x960 VESA 60.00//60.00 ± ± 108.000
60Hz 1280 x 1024 VESA 63.98//60.02 + + 108.000
75Hz 1280 x 1024 VESA 79.98//75.02 + + 135.000
60Hz 1360 x 768 VESA 47.720//59.799 - + 84.75
60Hz 1440 x 900 WXGA+ 55.935//59.887 - + 106.500
75Hz 1440 x 900 WXGA+ 70.635//74.984 - + 136.750
60Hz 1600 x 1200 VESA 75.00//60.00 + + 162.000
60Hz 1680x1050 WSXGA+ 65.29//59.954 - + 146.250
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3. FRONT PANEL CONTROLS AND INDICATORS
3-1. User Control Buttons
1.Power Switch:
To turn ON or OFF the power.
2.Power LED:
Lights up to indicate the power is turned ON.
3.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 to activate the Auto Adjustment
function. The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
5. < / >
1) When OSD menu is in active status, press < or > to select the desired function.
Press < or > to change the settings of the current function.
2) When OSD menu is in off status, press < or > to set the volume level.(Only Audio Model)
4.MENU / ENTER:
Activate OSD menu when OSD is OFF adjustment function when OSD is ON.
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3-2 Tilting the Monitor
The monitor has a tilt feature that allows you to tilt the display back and forth to find the most
comfortable viewing position. To tilt the display, grasp the sides and push the display back or
pull it toward you until it is in the desired position. The display can be tilted 20º backward and
5º forward.
Note: Do not tilt the display by grasping the top edge.
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3-3 Connecting the Monitor
To install the monitor to your host system, please follow the steps as given
below:
Steps
1. Connect Video Cable
1-1 VGA Cable
a. Make sure both the monitor and computer are powered-OFF.
b. Connect the VGA video cable to the computer.
1-2 Digital Cable
a. Make sure both the monitor and computer are powered-OFF.
b. Connect one end of the 24-pin DVI cable to the back of the monitor and connect the other
end to the computer's port.
2. Connect power cord
Connect the power cord to the monitor, then to a properly grounded AC outlet.
3. Power-ON Monitor and Computer
Power-ON the monitor first, then power-ON the computer.
※This sequence is very important.
4. If the monitor still does not function properly, please refer to the troubleshooting section to
diagnose the problem.
Note: For best monitor performance, it is strongly recommended that you use Auto Configuration
to automatically configure your monitor’s settings.
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4. Circuit Description
The block diagram of LCD monitor is shown in Appendix A. Following is the brief description of
the electronic circuits.
1 Main board Circuit
The circuit diagrams of main board are shown in Appendix B (PWB-1195). The circuit
diagrams of key board (PWB-1220) show in Appendix F, and the circuit diagrams of Power
Board(PWB-1207) shown in Appendix D respectively.
1.1 Scalar: MST TSUMU58BWHJ
Refer TSUMU58BWHJ (LVDS) schematic. The analog R, G, B input signals are supplied from
the analog interface, and then fed into (PWB-1195) U401, (MST TSUMU58BWHJ located in
schematic) at pin 28, pin 25,pin 23 for R,G,B signals. These analog R, G, B, Video Signals are
converted to their digital forms in (PWB -1195) U401.
1. The H-SYNC and V-SYNC signals come from the analog interface, and fed into
(PWB-1195) U401 at pin 32, pin 33.
2. Signal SDA_VGA and SCL_VGA are communication lines between PC and
(PWB-1195) U302 (EDID for analog interface) which is located in the schematic. These
two lines are called I2C Bus in related technical literature, which is actually a firmed
industry standard.
3. DDCA_SCL, DDC_ASDA are 2 pairs of I2C BUS for DDC/CI controls between PC and
(PWB-1195) U401 which are located in the Schematic.
4. The signal Reset is activated while the monitor is power on. It forces (PWB-1195) U401 to
enter its reset status. After reset, (PWB-1195) U401 starts its normal operation.
5. (PWB-1195) X401 is a 14.318 MHZ crystal. It is associated circuit components provide the
required reference clock for (PWB-1195) U401 normal operation.
6.Key [Auto], [Menu],[-],[+],[ ], and LED signals are fed to schematic (PWB-1195) CN401
detecting the user key activity.
7. There are two LED drivers, (PWB-1195) Q403 Green and (PWB-1195) Q401Amber,
which are controlled by pin 124 and pin 123 of (PWB-1195) U401 respectively.
1.2 Analog Interface: Input Connector
Refer to (PWB-1195) CN301 in schematic.
1. The analog R, G, B video input signals are supplied through the cable which is
terminated at (PWB-1195) CN301.These input signals are approximately 0.7 VPP in
amplitude and protected by TVS array (PWB-1195) D306. These R, G, B video signals
are 75 ohm terminated to ground, via (PWB-1195) R305, R306, and R307, AC coupled via
0.047uF capacitors (PWB-1195) C301, C302 , C303, and finally fed into (PWB-1195)
U401, at pin 28, pin 25 and pin 23 respectively. These analog R, G, B video signals are
converted to their digital forms in (PWB-1195) U401.
2. The H-SYNC and V-SYNC signals of TTL level in amplitude and also protected by
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TVS array (PWB-1195) D307. These two signals are fed into(PWB-1195) U401, at pin 32,
pin 33.
3. The signals terminated at (PWB-1195) CN301, at pin 15, pin 12 are also protected by
(PWB-1195) D306, and then connected to (PWB-1195) U302, stores the EDID data that
serves for the purpose of plug and play functionality.
1.3 Digital Interface: Input Connector
Refer to (PWB-1195) CN302 in schematic.
1. Digitized video and sync information are serialized and sent over three sets of twisted pair
wires, one set for red, green and blue data channels. These Digital video signals are
transmitted through the cable which is terminated at (PWB-1195) CN302 and are
protected by TVS array (PWB-1195) D308, D309 finally fed into (PWB-1195) U401 at pin
9,pin 10,pin 12,pin 13,pin 15,and pin 16 respectively.
2. An additional pair of wires is used to transmit a clock signal for timing also protected by
TVS array (PWB-1195) D309. These clock signal is fed into(PWB-1195) U401, at pin 18,
pin 19.
3. The signals terminated at (PWB-1195) CN302, at pin 6, pin 7 are protected by TVS array
(PWB-1195) D310, and then connected to (PWB-1195) U301, stores the EDID data that
serves for the purpose of plug and play functionality.
4. The signals terminated at (PWB-1195) CN302, at pin 16 is also protected by TVS
array(PWB-1195) D310 that serves for the purpose of hot plug detect functionality.
1.4 Output interface
VLCD is fed from 5V via Q205.This voltage supply is controlled by control signal,
which comes from (PWB-1195) U401 and the digital video signals output from
(PWB-1195) U401, are divided into even and odd parts in LVDS format. They are
designated as RXO, and RXE, each of 8 bit width. These signals are fed into LCD panel
from (PWB-1195) CN502, with in located in Schematic.
1.5 Power & inverter Interface
For PI board PWB-1207, please refer to Schematic (PWB-1207) P851 is a connector
that connects main board and Power inverter board. Main board (PWB-1195) 5V is fed
from (PWB-1195) CN3 in Schematic and associated components.Regulator IC
(PWB-1195) U202 provides 3.3V , (PWB-1195)U201 provides 1.8V to U401.
2 Power and Inverter Board Circuit
The circuit diagram 2 in 1 of Power & inverter circuit is shown in Appendix D (PWB-1207).
The inverter supplies power for backlight for the LCD panel.
3 Key Board Circuit
The circuit diagram of key board circuit is shown in Appendix F (PWB-1220).
15
4 Connector Definition
4.1 The pin assignment of the 15-pin D-SUB Receptacle connector is listed as below:
Pin
Number
Signal
Assignment
1 Video-Red
2 Video-Green
3 Video-Blue
4 Ground
5 Detect Cable
6 GND-R
7 GND-G
8 GND-B
9 +5V
10 Ground
11 Ground
12 DDC Data
13 H-Sync
14 V-Sync
15 DDC Clock
16
4.2 The pin assignment of the 24-pin DVI-D Receptacle connector is listed as below:
Pin Meaning Pin Meaning
1 TMDS Data2- 13 TMDS Data3+
2 TMDS Data2+ 14 +5V Power
3 TMDS Data 2/4 Shield 15 GND(return for +5V hsync.vsync
4 TMDS Data4- 16 Hot Plug Detect
5 TMDS Data4- 17 TMDS Data0-
6 DDC Clock 18 TMDS Data0+
7 DDC Data 19 TMDS Data 0/5
8 Analogue Vertical Sync 20 TMDS Data5-
9 TMDS Data1- 21 TMDS Data5+
10 TMDS Data1+ 22 TMDS Clock Shield
11 TMDS Data 1/3 Shield 23 TMDS Clock+
12 TMDS Data3- 24 DDC TMDS Clock-
17
5. Adjusting Procedure.
Factory Mode Settings
5-1. Burn-in Mode
1. Do not connect any input source
2. Pressing button [ Menu ] then [ ] power on
5-2. Enter into the factory setting:
1. Switch off the monitor, press and hold the [ Menu ] key then [ ] power on again
2. Press the [ Menu ] key to open OSD(OSD should be on the top left side of display), then
press the [<] key to select F of OSD and press [ Menu ] key into the factory OSD(factory
OSD in blue background is on the top left side of display)
3. Check the F/W version、type of panel 、type of scaler before execute AUTO COLOR or
adjusting color temperature.
4. Re-power on again, the monitor will reverse to normal operating state.
Type of scaler
F/W version
Type of Panel
18
5-3. Auto-Color Adjustment (Factory Mode & VGA Input Only)
1. Enter the factory mode.
2. Apply a 65K Hz (1680x1050 / 60 Hz) signal with five white-block
pattern. .( CHROMA 2250 or equivalent ; Pattern #42)
3. Press “Auto Color” item of factory OSD to run Auto-Color Adjustment
5-4. White Balance Adjustment (Factory mode)
Please follow the steps to adjust White Balance of this monitor
1. Warm up the LCD monitor at least 30 minutes before the “Auto-Color
Adjustment” proceeds
2. Enter the factory mode
3. Apply a 65K Hz (1680x1050 / 60 Hz) signal with five squre white pattern.. ( CHROMA 2250
Pattern #42)
4. Execute the auto-color process first before adjusting the white balance
5. Press the “Reset “item of factory OSD to recall default Contrast/Brightness Value.
6. Use a color analyzer to set the Luminance ＆ Color temperature to meet below data.
Color Temperature ：
19
Warm
x = 0.313 ± 0.020
y = 0.329 ± 0.020 Y ≧ 160cd/m2
Cool
x = 0.283 ± 0.020
y = 0.298 ± 0.020
＊ Adjusting by hand if Color Temperature is out of range.
7. Apply 1024x768 / 72 Hz then press the “Reset “item of factory OSD to initial
EEPROM for all timing modes.
8. Power off to end white balance adjustment.
5-5. Firmware Upgrade Procedure
1. Equipment Request：
-PC（Personal Computer）
-Monitor（Waiting to Re-flash）
- ISP Burning Tool
-Power Adapter（Input: AC 100v~240v；Output: DC 12v）
-Print Port Cable
-VGA Cable
PC
Monitor
20
Power Adapter ISP Kit
VGA Cable
2.SOP to upgrade the firmware
Step1 Connect ISP kit between PC and monitor
DC 12V /1A(minimum)
Print Port Cable
Step 2. Execute ISP_Tool File
To PC Printer Port
21
Step3.
Click ”Config”
Step 4.
Click “Auto Detect”
22
And then “OK” shows up beside the Auto Detect” button
Step 5.
Click “Connect” and then a dialog window pops up.
23
Step 6.
Click “Read” button
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