Sanyo lmu tf150a2 schematic

SERVICE MANUAL

15" COLOR LCD MONITOR

PRODUCT CODE NO . LMU-TF150A2

1 938 102 10

LMU-TF150A2

(GENERAL)

SANYO Electric Co., Ltd. OSAKA, JAPAN

REFERENCE NO. SM 920008

INDEX

Page

PRECAUTIONS ----------------------------------------------------------------------------------- 2 1, MAIN SPECIFICATION ----------------------------------------------------------------------3 2, TROUBLE SHOOTING ---------------------------------------------------------------------- 4,5,6 3, MAINTENANCE

Disassembling the major components ---------------------------------------------- 7 4, BLOCK DIAGRAM ---------------------------------------------------------------------------- 8 5, CONNECTION DIAGRAM ------------------------------------------------------------------ 9 6, TABLE OF SIGNAL NAME ----------------------------------------------------------------- 10,11 7, EXPLODED VIEW AND PARTS LIST

7-1 Exploded View ------------------------------------------------------------------------ 12

7-2 Parts List -------------------------------------------------------------------------------- 13 8, APPENDEX ------------------------------------------------------------------------------------- 14

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

- 1 -

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 Install the unit only on a stable and smooth surface. l Do not connect the unit to the same AC 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 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.

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.

- 2 -

1. MAIN SPECIFICATION

LCD

Panel Type

TFT

Screen Size

15.0"

Pixel Pitch

0.2970 X0.2970 mm

Pixel Format

1,024 X 768

Effective Viewing Area

304.1 X 228.1 mm

Brightness 200 cd/m

Response Time

40 ms

Contrast

350 : 1

Viewing Angle

Up:55, Down:65, Right:70, Left:70 deg.

(Contrast Ratio:5)

Color

16.77 million

Back Light

Type

CCFL

No.

2 pcs

Synchronization

Horizontal

24.8 - 60.2 kHz

Frequencies

Vertical

60.0 - 75.0 Hz

Input Signal

System

Analog RGB, Video 0.7Vp-p

Input Impedance

75 ohm

Sync. Type/Level

Separate TTL (+/-)

Audio

Line in

Stereo (Mini Jack X 1)

Headphone

Stereo (Mini Jack X 1)

Speaker

Stereo (0.2W X 2)

Video

15PIN MINI D-SUB

External Control

Switch/Volume

Brightness, Power Switch, Audio Volume

Auto Adjust, Contrast, Horizontal Size, Focus, Horizontal

Language :English, German, French, Spanish

Environment

Temperature

Operating : 5 to 35deg. Storage : -20 to 60deg.

Humidity

30 - 85% RH (Non Condensing)

Power Supply (AC Adapter)

Input : AC 115 - 240V Output : DC12V

GI40-US1225

Power Consumption

30W (Standby : 5W max.)

Physical

Dimensions (WXHXD)

399 X 412 X 199 mm

Weight

4.5kg

Power Management

VESA DPMS

USB HUB

USB standard Rev. 1.1

Self-Powered/Bus Powered

Upstream X 1, Downstream X 3

Tilt/Swivel

Up 20 deg., Down 0 deg., / Swivel Function

Plug & Play

DDC1, DDC2B (VESA Standard)

Auto Display Adjustment, Digital Smoothing Full Screen

Accessories

AC Adapter & Cord, RGB Cable, Audio Cable, USB Cable

On-Screen Display

Position, Vertical Position, Color, Recall, Black level

Other Features

Model Name

Expansion

- 3 -

2. TROUBLESHOOTING

Check the following for troubles of LCD monitor.

No. Symptom Check Points Treatments Class

Check AC outlet, AC cord, DC

No Picture with

Power Indicator OFF

No Picture with Power Indicator in

Amber

No Picture with Power Indicator in

Green

No Picture with Power Indicator

blinking in Green

1 Is the Power "ON" to a LCD Monitor ?

2 Is an AC Adapter defective?

Is the wire harness between main PCB

and DC IN PCB secured firmly ? Is the Power Supply circuit on main

PCB defective ?

1 Is the Power "ON" to a Computer ?

2 Is a computer standing by ?

Is the Image Processing circuit on

main PCB defective ? Is a screen saver programming

running ?

2 Is a signal cable connected securely ?

Disconnected a signal cable ? or Bent

a terminal pin ? Is the computer's signal timing not

agreeable to the LCD's specification ? Is the wire harness between Inverter

PCB and a LCD module secured firmly ?

Is the wire harness between main PCB

and Inverter PCB secured firmly ? Is the wire harness between main PCB

and SW/LED PCB or main PCB and

Brightness control volume connected securely ?

Is the Brightness control volume

defective ?

9 Is the LCD module defective ?

10 Is the Inverter unit defective ?

Is the display circuit on main PCB

defective ?

1 Is a computer standing by ?

2 Is a signal cable connected securely ?

Disconnected a signal cable ? or Bent

a terminal pin ?

Jack and Power switch for a LCD monitor

Replace an AC Adapter with the new one

Check the connection B Replace the main PCB with the

new one Check the Power Supply 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

Check the connection of a signal cable

Replace a signal cable with the new one

Adjust the computer's signal timing, if possible

Check the connection of wire harness

Ensure the connection of a wire harness

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

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

Check the connection of a signal cable

Replace a signal cable with the new one

- 4 -

+ 10 hidden pages