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LMU-TK12AS2TC (With Touch Panel)
(GENERAL)
LMU-TK12AS2TR (With Touch Panel) INDUSTRIAL MONITOR Service Manuall
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SERVICE MANUAL
LMU-TK12AS2 (Without Touch Panel)
INDUSTRIAL MONITOR LMU-TK12AS2TC (With Touch Panel)
(GENERAL)
LMU-TK12AS2TR (With Touch Panel)
(UK)
PRODUCT CODE NO.
LMU-TK12AS2 1 938 102 58
LMU-TK12AS2TC 1 938 102 57
LMU-TK12AS2TR 1 938 102 75
REFERENCE No. SM 920022
INDEX
Page
PRECAUTIONS ---------------------------------------------------------------------------------- 2
1, MAIN SPECIFICATION --------------------------------------------------------------------- 3,4
2, TROUBLE SHOOTING ---------------------------------------------------------------------- 5,6
3, MAINTENANCE
3-1 LMU-TK12AS2 ---------------------------------------------------------------------------- 7
3-2 LMU-TK12AS2TC----------------------------------------------------------------------- 8
3-3 LMU-TK12AS2TR----------------------------------------------------------------------- 9
4, BLOCK DIAGRAM ---------------------------------------------------------------------------- 10
5, CONNECTION DIAGRAM ------------------------------------------------------------------ 11
6, TABLE OF SIGNAL NAME ----------------------------------------------------------------- 12,13
7, EXPLODED VIEW AND PARTS LIST
7-1Exploded View --------------------------------------------------------------------------- 14,15,16
7-2 Parts List ------------------------------------------------------------------------------------- 17,18,19
8, APPENDIX ------------------------------------------------------------------------------------- 20
Refer to the separate volume User's Manual and CD-ROM
that included for instruction.
-1-
PRECAUTIONS
Placement precautions
Avoid placing the unit in humid or dusty places, or where it will be exposed to excessive heat
(direct sunlight, heaters, etc.)
Do not step on or set anything on the AC cord.
DAMAGE TO THE AC CORD IS A SAFETY RISK AND CAN CAUSE A FIRE.
Do not connect the unit to the same AC as outlet with appliances that generate large amounts of
interference (such as heaters with thermostats, appliances with motors, etc.). It is best to use a
completely separate electrical outlet.
Keep the unit away from water. If water accidentally enters the unit, unplug the AC power cord
immediately. DO NOT PLUG IN THE UNIT AGAIN.
Handling precautions
Avoid bending, kinking or damaging the AC power cord.
Never insert or remove the power cord with wet hands. Also, be sure to hold cord by the plug when
removing it from the outlet.
Do not remove any parts that are held in place with screws. (The unit does not contain any user
serviceable items.)
Maintain standard room temperature (5oC to 35 oC, or 41oF to 95 oF) during use. Do not subject the
unit to shock or vibration. Do not move the unit while it is in use.
A rapid increase in room temperature in cool weather can cause condensation to from inside the unit.
If this occurs, wait at least 15 minutes after turning the unit on before attempting to operate it.
-2-
1. MAIN SPECIFICATION
LMU-TK12AS2
LCD
Liquid Crystal Panel TFT
Display Size 12.1''
Pixel Configuration 800 x 600
Pixel Pitch 0.308 x 0.308 mm
Brightness 350 cd/m2
Response Time 70 ms
Contrast 350 : 1 typ.
Angle of Visibility Up 40, Down 50, Right 55, Left 55 degrees
(contrast ratio of less than 10)
Video
Horizontal signal 31.4 - 48.1kHz
Vertical signal 56 - 75Hz
Video Signal Analog RGB 75ohm 0.7Vp-p
No. of Colors 16.19 million
OSD Language English, German, French, Spanish
Plug & Play VESA DDC1, DDC2B
Power Management VESA DPMS
Physical
Dimensions 294.4 (W) x 232.9 (H) x 42.7 (D) mm
Weight 1.8kg
Operating Conditions Operating Temperature: 5°C to 35°C
Humidity: 30% to 85% RH (no condensation)
Power Supply/AC Adapter Model Name: GI40-US1225
Input: 115-240VAC 1.0A-0.55A, 50-60Hz
Output: DC 12V 2.5A
Power Consumption 16W (2W in Energy Saving mode)
N ote : To improve this LCD monitor's performance level, its specifications and appear-
ance are subject to change without notice.
-3-
LMU-TK12AS2TC / LMU-TK12AS2TR
LCD
Liquid Crystal Panel TFT
Display Size 12.1''
Pixel Configuration 800 x 600
Pixel Pitch 0.308 x 0.308 mm
Brightness 350 cd/m2
Response Time 70 ms
Contrast 350 : 1 typ.
Angle of Visibility Up 40, Down 50, Right 55, Left 55 degrees
(contrast ratio of less than 10)
Video
Horizontal signal 31.4 - 48.1kHz
Vertical signal 56 - 75Hz
Video Signal Analog RGB 75ohm 0.7Vp-p
No. of Colors 16.19 million
OSD Language English, German, French, Spanish
Plug & Play VESA DDC1, DDC2B
Power Management VESA DPMS
Touch Screen
Type Capacitive(LMU-TK12AS2TC) Resistive (LMU-TK12AS2TR)
Electrical Resolution 10bit (1,024 x 1,024) 4095 x 4095 (0.1 mm)
Communication Bi-directional asynchronous RS-232C serial communication
Physical
Dimensions 294.4 (W) x 232.9 (H) x 42.7 (D) mm
Weight 2.4kg (LMU-TK12AS2TC) 2.1kg (LMU-TK12AS2TR)
Operating Conditions Operating Temperature: 5°C to 35°C
Humidity: 30% to 85% RH (no condensation)
Power Supply/AC Adapter Model Name: GI40-US1225
Input: 115-240VAC 1.0A-0.55A, 50-60Hz
Output: DC 12V 2.5A
Power Consumption 17W (3W in Energy Saving mode)
Note : To improve this LCD monitor's performance level, its specifications and appear-
ance are subject to change without notice.
-4-
2. TROUBLESHOOTING
The "TROUBLESHOOTING for LCD Monitor" is described in below.
Please refer to the manual "TROUBLE SHOOTING for Touch-Screen" in CD-ROM that included
in "LMU-TK12AS2TC" "LMU-TK12AS2TR"
Sympton Check Points Treatments Class
No Picture with LCD back light OFF
Is the Power to a LCD monitor "ON"? Check AC outlet, AC cord, DC Jack and Power
1 A
switch for a LCD monitor
2 Is an AC Adapter defective? Replace an AC Adapter with the new one B
Is the Power to a computer "ON"? Check AC outlet, AC cord, DC Jack and Power
3 A
switch for a computer
Is a computer standing by ? Be out of standing by condition, by operating to
4 A
a computer
Is the wire harness between main PCB and Rotary Check the connection of wire harness
5 C
volume disconnected?
Is the wire harness between main PCB and DC-DC Check the connection of wire harness
6 C
PCB disconnected ?
Is the wire harness between Inverter PCB and a Check the connection of wire harness
7 C
LCD module disconnected ?
Is the wire harness between main PCB and Check the connection of wire harness
8 C
Inverter PCB disconnected ?
9 Is the Inverter unit defective ? Replace an Inverter unit with the new one C
10 Is the rotaly volume defective? Replace a sub PCB with the new one C
11 Is a LCD module defective ? Replace a LCD module with the new one C
12 Is the main PCB defective ? Replace the main PCB with the new one C
No Picture with LCD back light ON
1 Is a signal cable connected securely ? Check the connection of a signal cable A
Disconnected a signal cable ? or Bent a terminal Replace a signal cable with the new one
2 B
pin ?
Is the wire harness between main PCB and a LCD Check the connection of wire harness
3 C
module disconnected ?
Is the Brightness control volume defective ? Replace the Volume PCB with new one, and
4 C
check the screen
5 Is a LCD module defective ? Replace a LCD module with the new one C
Is the computer's signal timing not agreeable to Adjust the computer's signal timing, if possible
6 B
the LCD's specification ?
7 Is the main PCB defective ? Replace the main PCB with the new one C
CLASS
A It is possible to treated by end-user
B It might be possible to treate by end-user in some case.
C It must be treated by Professional Technical Staff
-5-
Sympton Check Points Treatments Class
Screen's display range is incorrect
1 Is the adjustment for screen performed correctly ? Adjust the screen correctly A
Is the size of screen set correctly ? Set the size of screen again(refer to User's
2 A
Manual for the computer)
Is the switch setting for adapter to convert signals Check the specification of an adapter to convert
3 B
performed correctly ? signals and a computer
Screen is distorted
1 Is a signal cable connected securely ? Check the connection of a signal cable A
2 Ia a signal cable extended too long ? Not to extend a signal cable A
Is the output level of a computer screen not Check the specification of a computer
3 B
agreeable to the LCD's specification ?
4 Is the main PCB defective ? Replace the main PCB with the new one C
Part of colors(R/G/B) is not displayed
Black line is appeared vertically
1 Is a signal cable connected securely ? Check the connection of a signal cable A
Is the connection between main PCB and a LCD Check the connector
2 C
module securely ?
3 Is the main PCB defective ? Replace the main PCB with the new one C
CLASS
A It is possible to treated by end-user
B It might be possible to treate by end-user in some case.
C It must be treated by Professional Technical Staff
-6-
3. MAINTENANCE
3-1 LMU-TK12AS2
Disassembling the major components
(1) Cabinet
1. Unscrew to secure the cabinet (8-position)
2. Pull the cabinet upward to remove it
(2) LCD Panel
1. Unscrew to secure the LCD panel (4-position)
2. Pull the LCD panel up carefully. Disconnect the FPC from main PCB, and pull the
connector out to inverter unit.
(3) Inverter Unit
1. Unscrew to secure the Inverter Unit (2-position)
2. Disconnect the cable from the main PCB
(4) Main PCB
1. Pull the RGB signal cable out
2. Unscrew to secure the main PCB (4-position)
3. Disconnect the cables on the main PCB (4-position)
/ Two connector from the VR-OSD PCB
/ One connector from the DC-IN PCB
/ One connector from the Inverter PCB
4. Unscrew to secure the bracket for RGB Connector (2-position)
(5) VR-OSD PCB
1. Unscrew to secure the VR-OSD PCB (3-position)
2. Disconnect the cables from the main PCB and the LED PCB
(6) DC-IN PCB
1. Unscrew to secure the DC-IN PCB (2-position)
2. Disconnect one cable from Power Switch, and another cable from the main PCB
(7) Power Switch
1. Remove the Power Switch, while pressing the hook of the Power Switch
(8) LED PCB
1. Unscrew to secure the LED PCB (1-position)
2. One cable has already been disconnected.
-7-
3-2 LMU-TK12AS2TC
Disassembling the major components
(1) Cabinet
1. Unscrew to secure the cabinet (8-position)
2. Pull the cabinet upward to remove it
(2) LCD Panel and Touch Panel
1. The Touch panel is on the LCD panel. The clearance between the Touch Panel and
the bottom case are filled with 8 rubber pieces. Pull the right side of the Touch panel
upward carefully, then turn it over at the left side of the bottom case.
2. Unscrew to secure the LCD panel (4-position)
3. Pull the LCD panel up carefully. Disconnect the FPC from the main PCB, and pull
the connector out to inverter unit.
4. Unscrew to secure the earth terminal (1-position)
5. Disconnect the cable on the main PCB (Orange, Grey)
6. Disconnect the cable on the Touch controller PCB
(3) Inverter Unit
1. Unscrew to secure the Inverter Unit (2-position)
2. Disconnect the cable from the main PCB
(4) Main PCB
1. Pull a RGB signal cable out
2. Unscrew to secure the main PCB (4-position)
3. Disconnect the cables on the main PCB (6-position)
/ Two cables have already been disconnected
/ Two connectors from the VR-OSD PCB
/ One connector from the DC-IN PCB
/ One connector from the Inverter PCB
4. Unscrew to secure the bracket for RGB Connector (2-position)
(5) Touch Controller PCB
1. Unscrew to secure the Touch controller PCB (2-position)
2. Disconnect the serial cable
(6) Serial Cable (Connector and Cable with bracket)
1. Unscrew to secure the bracket and Clamp for serial cable (3-position)
(7) VR-OSD PCB
1. Unscrew to secure the Joint PCB (3-position)
2. Disconnect the cables from the main PCB and the LED PCB
(8) DC-IN PCB
1. Unscrew to secure the DC-IN PCB (2-position)
2. Disconnect one cable from Power Switch, and another cable from the main PCB
(9) Power Switch
1. Remove the Power Switch, while pressing the hook of the Power Switch
(10) LED PCB
1. Unscrew to secure the LED PCB (1-position)
2. One cable has already been disconnected.
-8-
3-3 LMU-TK12AS2TR
Disassembling the major components
(1) Cabinet
1. Unscrew to secure the cabinet (8-position)
2. Pull the cabinet upward to remove it
(2) LCD Panel and Touch Panel
1. The Touch panel is on the LCD panel. The clearance between the Touch Panel and
the bottom case are filled with 8 rubber pieces. Pull the right side of the Touch panel
upward carefully, then turn it over at the left- side of the bottom case.
2. Unscrew to secure the LCD panel (4-position)
3. Pull the LCD panel up carefully. Disconnect the FPC from main PCB, and pull the
connector out to inverter unit.
4. Disconnect the FPC cable on the Touch controller PCB
(3) Inverter Unit
1. Unscrew to secure the Inverter Unit (2-position)
2. Disconnect the cable from the main PCB
(4) Main PCB
1. Pull the RGB signal cable out
2. Unscrew to secure the main PCB (4-position)
3. Disconnect the cables on the main PCB (5-position)
/ Two connector from the VR-OSD PCB
/ One connector from the Touch Controller PCB
/ One connector from the DC-IN PCB
/ One connector from the Inverter PCB
4. Unscrew to secure the bracket for RGB Connector (2-position)
(5) Touch Controller PCB
1. Unscrew to secure the Touch controller PCB (2-position)
2. Disconnect the serial cable
(6) Serial Cable (Connector and Cable with bracket)
1. Unscrew to secure the bracket for serial cable (2-poswition)
(7) VR-OSD PCB
1. Unscrew to secure the Joint PCB (3-position)
2. Disconnect the cables from the main PCB and the LED PCB
(8) DC-IN PCB
1. Unscrew to secure the DC-IN PCB (2-position)
2. Disconnect one cable from Power Switch, and another cable from the main PCB
(9) Power Switch
1. Remove the Power Switch, while pressing the hook of the Power Switch
(10) LED PCB
1. Unscrew to secure the LED PCB (1-position)
2. One cable has already been disconnected.
-9-
Main Board
OSD Key
LED
Micro
Controller ROM EEPROM
Vsync.
Hsync. PLL
4. BLOCK DIAGRAM
SVGA
Video TFT
Controller LCD
ADC ASIC Panel
- 10 -
Red
Green Video
Amp Clock Gen.
Blue Panel
Cont. Inverter
EEPROM
DDC DC/DC Conv. Rotary
for P&P
Volume
TOUCH CONTROLLER LED
ROM
Micro Controller A/D Conv.
Touch Senser Interface
RS232C AMP
Micro Controller Interface Touch Senser
NVRAM
LMU-TK12AS2TC,LMU-TK12AS2TR Touch Control Board
- 11 -
N.C. 1 1
only
N.C. 6 6
2 2
7 7
3 3 RTS LL LL
JP1
JP2
1 12
8 8 RXD UL UL
2 11
N.C. 4 4 TXD LR LR
3 10
N.C. 9 9 N.C. UR UR
TXD
RXD
RTS
CTS
4 9
LMU-TK12AS2TR
5 5 GND BACK BACK
5 8
N.C. +12V
6 7
N.C. GND
For LMU-TK12AS2TC.
7 6
GND
NC
5
DSR
DTR
GND
DCD
EVDD
4
NOVDATA
1
6
2
7
3
8
4
9
5
3
NOVCE
2
CABLE NVRAM
NOVCLK
1
+12V
Touch Controller
8 GND
POWER GND
CHASSIS GND
15 SCL
7 GND
14 VSYNC
6 GND
13 HSYNC
5 GND
12 SDA
4 N.C.
11 N.C.
3 BLUE
Personal
10 GND
Computer
2 GREEN
9 N.C.
1 RED
Touch Sensor
2
1
CN702
GND 8
SCL 15
GND 7
VSYNC 14
GND 6
HSYNC 13
GND 5
SDA 12 VSS
1 1
N.C. 4 DCLK
CN101
2 2
N.C. 11 VSS
3 3
BLUE 3 HSYNC
4 4
GND 10 VSYNC
5 5
GREEN 2 VSS
6 6
N.C. 9 VSS
7 7
RED 1 VSS
8 8
R0
9 9
R1
10 10
R2
11 11
VSS
12 12
R3
13 13
VR1 R4
Control
CN1 1 14
VRC 1 R5 14
CN720
2 2 15 15
VR2 VSS
3 3 16 16
N.C. VSS
Brightness
VR1
4 17 17
N.C. VSS
5 18 18
MAIN
G0
P.C.B
19 19
G1
20 20
G2
21 21
MENU VSS
1 22 22
J1
SEL G3
CN3
2 23 23
DOWN G4
3 24 24
Display
UP G5
4 25 25
GND VSS
5 26 26
VSS
P.C.B
27 27
MENU VSS
1 1 28 28
SEL B0
2 2 29 29
TFT 12-inch
DOWN B1
3 3 30 30
UP B2
CN2
Liquid Crystal
4 4 31 31
GND VSS
CN601
5 5 32 32
LED-R B3
6 6 33 33
VCC B4
7 7 34 34
LED-G B5
8 8 35 35
User Interface
VSS
36 36
DE
37 37
TEST
38 38
VDD
CN4
39 39
VDD
40 40
N.C.
41 41
3
2
1
Switch
RED
GND
GREEN
CN701
CN721
3
2
1
CN401
External OSD
2
1
5
4
3
2
1
LED
GND
+12V
P.C.B
H.V2
H.V1
LGND
VR2
VR1
GND
+12V
ON (5V)
P.C.B
CN4
DC IN
2
1
5
4
3
2
1
3
2
1
CN2
1
CN1
CN2
2
J1
Power Switch
Unit
Inverter
AC