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SERVICE MANUAL
INDUSTRIAL MONITOR LMU-TK12A (Without Touch Panel) LMU-TK12AT (With Touch Panel) (GENERAL)
PRODUCT CODE NO. LMU-TK12A 1 938 102 06 LMU-TK12AT 1 938 102 07
REFERENCE NO. SM 920004
INDEX
Page
PRECAUTIONS ---------------------------------------------------------------------------------- 2 1, MAIN SPECIFICATION --------------------------------------------------------------------- 3 2, TROUBLE SHOOTING ---------------------------------------------------------------------- 4,5 3, MAINTENANCE Disassembling the major components ------------------------------------------------------ 6 4, BLOCK DIAGRAM ---------------------------------------------------------------------------- 7 5, CONNECTION DIAGRAM ------------------------------------------------------------------ 8 6, TABLE OF SIGNAL NAME ----------------------------------------------------------------- 9,10 7, EXPLODED VIEW AND PARTS LIST 7-1Exploded View --------------------------------------------------------------------------- 11,12 7-2 Parts List ------------------------------------------------------------------------------------- 13,14 8, APPENDIX ------------------------------------------------------------------------------------- 15
Refer to the separate volume user's guide for instruction.
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PRECAUTIONS
Placement precautions
l l l 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. l 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
l l l l l 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 40 oC, or 41oF to 104 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.
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1. MAIN SPECIFICATION
Model Name Display Panel Type Screen Size Pixel Pitch Effective Viewing Area Pixel Format Brightness Response Time Contrast Viewing Angle (minimum) Back Light Panel Life Time Video Control System Video Input Signal Sync.Type/Level Synchronization Horizontal Frequencies Vertical Colors Touch panel Type Electrical Resolution Communication Baud rate Data Stop bit Parity Touch Life Touch Down Speed Physical Video Signal Input Serial Power Supply Operating Temperature Environment Humidity Model Name Power Supply Input (AC Adapter) Output Power Supply Consumption Dimensions Weight Accessories LMU-TK12AT LMU-TK12A
TFT 12.1" 0.308 X 0.308 mm 246.0 X 184.5 mm 800 X 600 200cd/m2 typ. 50ms 150 : 1 typ. Left & Right :60 deg Up :30 deg Down :45 deg CCFL x 1 20,000 hours Analog RGB 0.7Vp-p 75 ohm Separate TTL (+/-) 24.8k - 53.7kHz 56.4 - 85Hz 16.19million Resistive 10bit (1,024 X 1,024) Bi-directional asynchronous RS232C serial communication 9,600 BPS (1,200 - 19,200 BPS) 7 bit (7bit or 8bit) 2 bit (1bit or 2bit) non (odd, even, or non) Greater than 20 million touches in any location. 15 ms -
15pin mini D-Sub 9pin D-Sub DC Jack operating : 5oC to 40 oC Storage : -20 oC to 60 oC 30% to 80% RH G140-US1225 100-240V 1.0A-0.55A, 50-60Hz 12V 2.5A 20W max. 15W max. 5W in Energy Saving mode 295(W) X 233(D) X 42(H) mm 2.0 kg 1.8 kg AC Adapter, Power Cord, RGB AC Adapter, Power Cord, RGB cable, Serial cable, OSD control box, cable, OSD control box, Adjustment FD, Touch Ware Adjustment FD, User's Guide CD-ROM, User's Guide
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2. TROUBLE SHOOTING
The "TROUBLESHOOTING for LCD Monitor" is described in below. Please refer to the manual "TROUBLE SHOOTING for Touch-Screen" in CD-ROM.
No. 1
SYMPTOM No Picture with Power Indicator OFF
CHECK POINTS 1 Is the Power to a LCD monitor "ON"? 2 Is an AC Adapter defective?
TREATMENTS Check AC outlet, AC cord, DC Jack and Power switch for a LCD monitor Replace an AC Adapter with the new one
3 Is the wire harness between main PCB Check the connection and DC-IN PCB secured firmly ? 4 The Power Supply circuit on main PCB Replace the main PCB with the new one may be defective 2 No Picture with Power Indicator in Amber 1 Is the Power to a computer "ON"? 2 Is a computer standing by ? 3 The Image Processing circuit on main PCB may be defective 3 No Picture with Power Indicator in Green 1 Is a screen saver programming running ? Check AC outlet, AC cord, DC Jack and Power switch for a computer Be out of standing by condition, by operating to a computer Replace the main PCB with the new one Press any key or touch the mouse, to end the screen saver program
2 Is a signal cable connected securely ? Check the connection of a signal cable 3 Disconnected a signal cable ? or Bent a Replace a signal cable with the new one terminal pin ? 4 Is the computer's signal timing not agreeable to the LCD's specification ? Adjust the computer's signal timing, if possible
5 Is the wire harness between Inverter Check the connection of wire harness PCB and a LCD module secured firmly ? 6 Is the wire harness between main PCB Check the connection of wire harness and Inverter PCB secured firmly ? 7 The Brightness control volume may be Replace the Volume PCB with new one, defective and check the screen 8 The LCD module may be defective 9 The Inverter unit may be defective 10 The display circuit on main PCB may be defective ? 4 No Picture with Power Indicator blinking in Green 1 Is a computer standing by ? Replace a LCD module with the new one Replace an Inverter unit with the new one Replace the main PCB with the new one Be out of standing by condition, by operating to a computer
2 Is a signal cable connected securely ? Check the connection of a signal cable 3 Disconnected a signal cable ? or Bent a Replace a signal cable with the new one terminal pin ?
It is possible to treated by end-user It must be treated by Professional Technical Staff It might be possible to treat by end-user in some case.
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No. 5
SYMPTOM White/Grey on whole screen (Nothing on screen)
CHECK POINTS
TREATMENTS
1 Is the wire harness between main PCB Check the connection of wire harness and LCD module secured firmly ? 2 Is the LCD module defective ? Replace a LCD module with the new one 3 Is the main PCB defective ? Replace the main PCB with the new one
6
Screen's display range is incorrect
1 Is the adjustment for screen performed Adjust the screen correctly correctly ? 2 Is the output level on image from a computer not agreeable to LCD's specification ? 3 Is the size of screen set correctly ? Check the specification of a computer
Set the size of screen again(refer to User's Manual for computer)
7
Screen is distorted
1 Is the adjustment for screen performed Adjust the screen correctly correctly ? 2 Is a signal cable connected securely ? Check the connection of a signal cable 3 Is a signal cable extended ? 4 Is the output level on image from a computer not agreeable to LCD's specification ? 5 The Image Processing circuit on main PCB may be defective Don't extend a signal cable Check the specification of a computer
Replace the main PCB with the new one
8
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 2 Is the connection between main PCB and a LCD module securely ? 3 The Image Processing circuit on main PCB may be defective Check the connector Replace the main PCB with the new one
It is possible to treated by end-user It must be treated by Professional Technical Staff It might be possible to treat by end-user in some case
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3 MAINTENANCE
3-2 LMU-TK12AT
Disassembling the major components (1) Cabinet 1. Unscrew to secure the cabinet(8-position) 2. Pull the cabinet upward to remove it LCD Panel and Touch Panel 1. A Touch panel is on a LCD panel. The clearance between a Touch Panel and a bottom case are filled with 8 rubber pieces. Pull the left-side of a Touch panel upward carefully, then turn it over at the right side of a bottom case. 2. Unscrew to secure the LCD panel(4-position) 3. Pull the LCD panel up carefully. Disconnect a FPC from main PCB, and pull a 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 Inverter Unit 1. Unscrew to secure the Inverter Unit(3-position) 2. Disconnect the cable from the main PCB 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 / One connector from Joint PCB / One connector from the LCD panel / One connector from the DC-IN PCB / One connector from the Inverter PCB 4. Unscrew to secure the bracket for RGB Connector(2-position) Touch Controller PCB 1. Unscrew to secure the Touch controller PCB(2-position) 2. Disconnect a serial cable Serial Cable(Connector and Cable with bracket) 1. Unscrew to secure the bracket for serial cable(2-poswition) Joint PCB 1. Unscrew to secure the Joint PCB(2-position) 2. Disconnect the cables from the main PCB and the LED PCB VR PCB 1. Unscrew to secure the VR PCB(2-position) 2. Disconnect the cable to the main PCB 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 Power Switch 1. Remove the Power Switch, while pressing the hook of the Power Switch LED PCB 1. Unscrew to secure the LED PCB(1-position) 2. One cable has already been disconnected.
(2)
(3)
(4)
(5)
(6) (7)
(8)
(9)
(10) (11)
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4
BLOCK DIAGRAM
OSD Key V Micro Controller
EEROM
LED ROM
PLL H SVGA TFT LCD Panel
Video Amp
Video Controller Cheetah 2
R G B
ADC Clock Gen. Volume Inverter
RS232C
Control Board
Touch Screen
(for LMU-TK12AT only)
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N.C. N.C.
N.C. N.C.
N.C. N.C.
1 6 2 7 3 8 4 9 5
1 6 2 7 3 8 4 9 5
N.C. N.C.
RTS RXD TXD CTS GND N.C. N.C.
1 2 3 4 5 6 7
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
GND SCL GND VSYNC GND HSYNC GND SDA N.C. N.C. BLUE GND GREEN N.C. RED
GND SCL GND VSYNC GND HSYNC GND SDA N.C. N.C. BLUE GND GREEN N.C. RED
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
SANDDUNE 1
Volume P.C.B
5. CONNECTION DIAGRAM
External OSD Switch
CN502
MENU SEL DOWN UP GND 1 2 3 4 5
1 2 3
VR1 VRC VR2
1 2 3
Connector P.C.B CN503
1 2 3 4 5 6 7 8
MENU SEL DOWN UP GND LED-R VCC LED-G
1 2 3 4 5 6 7 8
Power Switch
CN201
1 2
-8Notes: for LMU-TK12AT only
JP2 CN7
CTS TXD RTS RXD DSR GND NC DTR
Touch Screen Controller
DCD
(Note)
5 9 4 8 3 7 2 6 1
12 11 10 9 8 7 6 5 4 3 2 1
LL UL LR UR BACK +12V CHAS SIS GND P O WER GND N.C. N.C. N.C. N.C.
Personal Computer
CN401
Touch Screen
(Note)
P8
1 2
P6
P5
CN6 CN501
TFT 12-inch Liquid Crystal Display
P4
Analogue Interface P.C.B
P2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
VSS DCLK VSS HSYNC VSYNC VSS VSS VSS R0 R1 R2 VSS R3 R4 R5 VSS VSS VSS G0 G1 G2 VSS G3 G4 G5 VSS VSS VSS B0 B1 B2 VSS B3 B4 B5 VSS DE TEST VDD VDD N.C.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
1 2 3 GREEN GND RED
P7
P1
1 2 3
1 2 +12V GND
1 2 3 4 5 H.V
LED P.C.B
AC Adapter AC Plug
LGND
+12V GND VR1 VR2 ON (5V)
N.C.
DC IN P.C.B
J201
1 2 1 2 3 4 5 1 2 3
CN202
CN1
CON3
Inverter Unit
6. TABLE OF SIGNAL NAME
Symbol DCLK HSYNC VSYNC R0 R1 R2 R3 R4 R5 G0 G1 G2 G3 G4 G5 B0 B1 B2 B3 B4 B5 DE TEST VDD VDD VIN VR1,2 ON VR1,2 VRC MENU SEL DOWN UP LED-R LED-G RED GREEN BLUE HSYNC VSYNC SDA SCL VR1,2 ON
Signal Name Data Clock Horizontal Sync. Vertical Sync. Red Data (LSB) Red Data Red Data Red Data Red Data Red Data (MSB) Green Data (LSB) Green Data Green Data Green Data Green Data Green Data (MSB) Blue Data (LSB) Blue Data Blue Data Blue Data Blue Data Blue Data (MSB) Data Enable (positive) Display test Power Supply Power Supply Inverter Power Controlled Voltage Back Light Control Brightness Volume Brightness Volume MENU Key SELECT Key DOWN Key UP Key LED Red LED Green VIDEO Red Signal VIDEO Green Signal VIDEO Blue Signal Horizontal Sync. Vertical Sync. DDC Data DDC Clock Controlled Voltage Back Light Control
Location P4-2 P4-4 P4-5 P4-9 P4-10 P4-11 P4-13 P4-14 P4-15 P4-19 P4-20 P4-21 P4-23 P4-24 P4-25 P4-29 P4-30 P4-31 P4-33 P4-34 P4-35 P4-37 P4-38 P4-39 P4-40 P1-1 P13,4 P1-5 P5-1,3 P5-2 P2-1 P2-2 P2-3 P2-4 P2-6 P2-8 P6-1 P6-2 P6-3 P6-13 P6-14 P6-12 P6-15 P1-3,4 P1-5
Notes This signal is invalid, input H or L. This signal is invalid, input H or L.
For display test, to be L. 3.3V 3.3V 12V H : Light ON
H : Light ON
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6. TABLE OF SIGNAL NAME
Touch Screen Controller (for LMU-TK12AT only)
Symbol RTS RXD TXD CTS DCD DTR GND DSR GND UR LR UL LL Signal Name Request To Send Receive Data Transmit Data Clear To Send Data Carrier Detect Data Terminal Ready Signal ground Data Set Ready Chassis (earth) ground Upper right (UR) corner Lower right (LR) corner Upper left (UL) corner Lower left (LL) corner Location JP1-1 JP1-2 JP1-3 JP1-4 NC NC NC NC NC JP2-9 JP2-10 JP2-11 JP2-12 Notes
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7-2. Parts List
CAUTION
Parts marked as Are very important to secure safety. In case of replacement, it is required to use designted parts for safety.
7-2-1 LMU-TK12A
REF No. PART No. OUTER (632 872 2563) (632 613 4436) INDIVIDUAL (632 872 2570) (632 872 2587) (632 872 2594) (632 872 2600) (632 298 2376) (632 603 0998) (632 822 4425) (632 607 4824) ACCESSORY (632 860 9925) (632 869 1968) CABINET1 (632 882 0979) CHASSIS (632 882 0986) (632 882 0993) STAND (632 880 1350) CHASSIS ELC. (632 880 1381) (632 880 1428) (632 880 1411) (632 880 1442) (632 873 4696) (632 880 1459) (632 880 1329) PC BOARD 1 (632 880 1466) PC BOARD 3 (632 880 1473) PC BOARD 4 (632 880 1480) PC BOARD 5 (632 880 1497) PC BOARD 6 (632 880 1503) DESCRIPTION OUTER CARTON LABEL, BARCODE PAD, BOTTOM PAD, SIDE PAD, ACCESSORY PAD, TOP POLYETHYLENE BAG POLYETHYLENE BAG, 130X500 POLYETHYLENE BAG, 300X450 POLYETHYLENE BAG, L180X270 FLOPPY DISK INSTRUCTION MANUAL, ENGLISH TOP LID ASS'Y BOTTOM LID ASS'Y RATING PLATE ASS'Y STAND ASS'Y LIQUID CRYSTAL DIS. ASS'Y DC-AC INVERTER ASS'Y AC ADAPTER ASS'Y FPC BOARD ASS'Y VGA CABLE, 150CM POWER SWITCH ASS'Y REMOTE CONTROLLER ASS'Y PW BOARD UNIT ASS'Y PW BOARD ASS'Y, VR PW BOARD ASS'Y, DC-IN PW BOARD ASS'Y, LED PW BOARD ASS'Y, JOINT Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 NOTES
FOR SERIAL CABLE, CNT BOX FOR AC ADAPTER FOR MONITOR FOR USER'S GUIDE
1 11 18 19 3 5 17 4 16 13 14 6 8 10 12 9
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CAUTION
Parts marked as Are very important to secure safety. In case of replacement, it is required to use designted parts for safety.
7-2-2 LMU-TK12AT
REF No. PART No. OUTER (632 872 2563) (632 613 4436) INDIVIDUAL (632 872 2570) (632 872 2587) (632 872 2594) (632 872 2600) (632 298 2376) (632 603 0998) (632 822 4425) (632 607 4824) ACCESSORY (632 860 9925) (632 867 2325) (632 869 1968) CABINET1 (632 880 1336) CHASSIS (632 880 1343) (632 880 1435) STAND (632 880 1350) CHASSIS ELC. (632 880 1381) (632 880 1398) (632 880 1428) (632 880 1411) (632 880 1442) (632 866 8397) (632 873 4696) (632 880 1404) (632 880 1459) (632 880 1329) PC BOARD 1 (632 880 1466) PC BOARD 3 (632 880 1473) PC BOARD 4 (632 880 1480) PC BOARD 5 (632 880 1497) PC BOARD 6 (632 880 1503) DESCRIPTION OUTER CARTON LABEL, BARCODE PAD, BOTTOM PAD, SIDE PAD, ACCESSORY PAD, TOP POLYETHYLENE BAG POLYETHYLENE BAG, 130X500 POLYETHYLENE BAG, 300X450 POLYETHYLENE BAG, L180X270 FLOPPY DISK CD-ROM DISK, TOUCHWARE INSTRUCTION MANUAL, ENGLISH TOP LID ASS'Y BOTTOM LID ASS'Y RATING PLATE ASS'Y STAND ASS'Y LIQUID CRYSTAL DIS. ASS'Y GLID POINT ASS'Y, 12.1 DC-AC INVERTER ASS'Y AC ADAPTER ASS'Y FPC BOARD ASS'Y SERIAL CABLE, 1.8M VGA CABLE, 150CM CONTROLLER, SMT3R POWER SWITCH ASS'Y REMOTE CONTROLLER ASS'Y PW BOARD UNIT ASS'Y PW BOARD ASS'Y, VR PW BOARD ASS'Y, DC-IN PW BOARD ASS'Y, LED PW BOARD ASS'Y, JOINT Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 NOTES
FOR SERIAL CABLE, CNT BOX FOR AC ADAPTER FOR MONITOR FOR USER'S GUIDE
1 11 18 19 3 2 5 17 4 15 16 7 13 14 6 8 10 12 9
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APPENDIX Version of Firmware
The Version of Firmware is displayed on screen.
Turn the Power Switch to `OFF'. While pressing of the [SELECT] button, turn the Power Switch to `ON'.
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