Sanyo lmu tk12atc schematic

SERVICE MANUAL

INDUSTRIAL MONITOR

PRODUCT CODE NO.
L

MU-T 12ATC/SS 1 938 102 12
LMU-TK12ATC(K)/SS
LMU-TK12ATC(K)/UK

1 938 102 37
1 938 102 38

LMU-TK12ATC
(GENERAL)

(With Touch Panel)

REFERENCE NO. SM 920016

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
7-2 Parts List ------------------------------------------------------------------------------------- 12-14
8, APPENDIX ------------------------------------------------------------------------------------- 15

Refer to the separate volume user’s guide for instruction.

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PRECAUTIONS

Placement precautions

l Avoid placing the unit in humid or dusty places, or where it will be exposed to excessive heat

(direct sunlight, heaters, etc.)

l 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.

l 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 Avoid bending, kinking or damaging the AC power cord.
l 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.

l Do not remove any parts that are held in place with screws. (The unit does not contain any user

serviceable items.)

l 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.

l 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

Display

Liquid Crystal Panel: TFT
Display Size: 12.1''
Pixel Configuration: 800 x 600
Pixel Pitch: 0.308 x 0.308 mm

2

Brightness: 200 cd/m
Response Time: 50 ms
Contrast: 150 : 1 typ.
Angle of Visibility: Left 60 degrees,Right 60 degrees, Up 30 degrees, Down 45 degrees.

Video Control

Vertical signal 55 - 77Hz
Horizontal signal: 24 - 61 kHz
Colors: 16.19 million
Adjustment Functions: BRIGHTNESS, DOT-CLOCK, PHASE, H-POSITION, V-POSITION,

LEVEL, R-LEVEL, G-LEVEL, B-LEVEL
Plug & Play: VESA DDC1, DDC2B
Power Management: VESA DPMS

max.

Touch Panel

Type: Resistive (LMU-TK12AT) Capacitive (LMU-TK12ATC)
Electrical Resolution: 10bit (1024 x 1024)
Communication: Bi-directional asynchronous RS-232C serial communication

Physical

Input: Video 15pin mini D-SUB

Serial 9pin D-SUB

Power DC jack
Dimensions(Exclude Stand)
Weight: 2 kg (LMU-TK12AT) 2.2kg (LMU-TK12ATC)
Operating Conditions: Operating Temperature Operating: 5°C to 40°C

Power Supply:
/AC Adapter:

Power Consumption: 20 W (5W in Energy Saving mode)

Model
Input
Output

: 295 (W) x 233 (D) x 42 (H) mm

Storage: –20°C to 60°C

Humidity: 30% to 85% RH (no condensation)

LMU-TK12AT
GI40-US1225
100-240V 50-60Hz
12v 2.6A

LMU-TK12ATC
GI40-US1225
100-240VAC 1.0A-0.55A, 50-60Hz
DC 12v 2.5A

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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. SYMPTOM CHECK POINTS TREATMENTS

1 No Picture with Power

Indicator OFF

2 No Picture with Power

Indicator in Amber

3 No Picture with Power

Indicator in Green

1 Is the Power to a LCD monitor "ON"? Check AC outlet, AC cord, DC Jack and

Power switch for a LCD monitor

2 Is an AC Adapter defective? Replace an AC Adapter with the new

one

3 Is the wire harness between main PCB

and DC-IN PCB secured firmly ?

4 The Power Supply circuit on main PCB

may be defective

1 Is the Power to a computer "ON"? Check AC outlet, AC cord, DC Jack and

2 Is a computer standing by ? Be out of standing by condition, by

3 The Image Processing circuit on main

PCB may be defective

1 Is a screen saver programming

running ?

2 Is a signal cable connected securely ? Check the connection of a signal cable

3 Disconnected a signal cable ? or Bent a

terminal pin ?

Check the connection

Replace the main PCB with the new one

Power switch for a computer

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

Replace a signal cable with the new one

4 No Picture with Power

Indicator blinking in
Green

4 Is the computer's signal timing not

agreeable to the LCD's specification ?

5 Is the wire harness between Inverter

PCB and a LCD module secured
firmly ?

6 Is the wire harness between main PCB

and Inverter PCB secured firmly ?

7 The Brightness control volume may be

defective

8 The LCD module may be defective Replace a LCD module with the new

9 The Inverter unit may be defective Replace an Inverter unit with the new

10 The display circuit on main PCB may

be defective ?

1 Is a computer standing by ? Be out of standing by condition, by

2 Is a signal cable connected securely ? Check the connection of a signal cable

3 Disconnected a signal cable ? or Bent a

terminal pin ?

Adjust the computer's signal timing, if
possible

Check the connection of wire harness

Check the connection of wire harness

Replace the Volume PCB with new one,
and check the screen

one

one
Replace the main PCB with the new one

operating to a computer

Replace a signal cable 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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