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
7-2 Parts List -------------------------------------------------------------------------------- 13
8, APPENDEX ------------------------------------------------------------------------------------- 14
Refer to the separate volume user's guide for instruction.
- 1 -
Page 3
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 -
Page 4
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
Brightness200 cd/m
2
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 -
Page 5
2. TROUBLESHOOTING
Check the following for troubles of LCD monitor.
No.SymptomCheck PointsTreatmentsClass
Check AC outlet, AC cord, DC
No Picture with
1
Power Indicator OFF
No Picture with
Power Indicator in
2
Amber
No Picture with
Power Indicator in
3
Green
No Picture with
Power Indicator
4
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
3
and DC IN PCB secured firmly ?
Is the Power Supply circuit on main
4
PCB defective ?
1 Is the Power "ON" to a Computer ?
2 Is a computer standing by ?
Is the Image Processing circuit on
3
main PCB defective ?
Is a screen saver programming
1
running ?
2 Is a signal cable connected securely ?
Disconnected a signal cable ? or Bent
3
a terminal pin ?
Is the computer's signal timing not
4
agreeable to the LCD's specification ?
Is the wire harness between Inverter
5
PCB and a LCD module secured firmly
?
Is the wire harness between main PCB
6
and Inverter PCB secured firmly ?
Is the wire harness between main PCB
and SW/LED PCB or main PCB and
7
Brightness control volume connected
securely ?
Is the Brightness control volume
8
defective ?
9 Is the LCD module defective ?
10 Is the Inverter unit defective ?
Is the display circuit on main PCB
11
defective ?
1 Is a computer standing by ?
2 Is a signal cable connected securely ?
Disconnected a signal cable ? or Bent
3
a terminal pin ?
Jack and Power switch for a
LCD monitor
Replace an AC Adapter with the
new one
Check the connectionB
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
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
A
B
B
A
A
B
A
A
C
A
B
B
B
B
B
B
B
A
A
C
- 4 -
Page 6
No.SymptomCheck PointsTreatmentsClass
White/Grey on
whole
5
screen(Nothing on
screen)
Is the wire harness between main PCB
1
and LCD module secured firmly ?
2 Is the LCD module defective ?
3 Is the main PCB defective ?
Check the connection of wire
harness
Replace a LCD module with the
new one
Replace the main PCB with the
new one
B
B
B
6
Dark screen
Screen's display
7
range is incorrect
8
Screen is distorted
Part of colors(R/G/B)
is not displayed.
9
Black line appears in
vertically
No sound
10
Is the wire harness between inverter
1
and a LCD module secured firmly ?
Is the wire harness between one of
2
inverters and main PCB secured firmly
?
Is the display circuit on main PCB
3
defective ?
Is the adjustment for screen performed
1
correctly ?
Is the output level on image from a
2
computer not agreeable to LCD's
specification ?
Ensure the connection of a wire
harness
Ensure the connection of a wire
harness
Replace the main PCB with the
new one
Adjust the screen correctlyA
Check the specification of a
computer
Set the size of screen
3 Is the size of screen set correctly ?
again(refer to User's Manual for
computer)
Is the adjustment for screen performed
1
correctly ?
2 Is a signal cable connected securely ?
Adjust the screen correctlyA
Check the connection of a signal
cable
3 Is a sigil cable extended ?Don't extend a signal cableA
Is the output level on image from a
4
computer not agreeable to LCD's
specification ?
Is the Image Processing circuit on
5
main PCB defective ?
1 Is a signal cable connected securely ?
Is the connection between main PCB
2
and a LCD module securely ?
Is the Image Processing circuit on
3
main PCB defective ?
Is the audio cable connected securely?Ensure the connection of the
1
Is the position of audio volume at the
2
minimum position ?
Is the volume setting for an audio
3
equipment adequately ?
Is the wire harness between main PCB
4
and Audio PCB securely ?
Is the wire harness between Audio
5
PCB and Volume PCB securely ?
Check the specification of a
computer
Replace the main PCB with the
new one
Check the connection of a signal
cable
Check the connectorB
Replace the main PCB with the
new one
audio cable
Set the audio volume at the
appropriate position
Refer to the user's manual for an
audio equipment
Ensure the connection of a wire
harness
Ensure the connection of a wire
harness
B
B
B
C
A
A
C
B
A
B
A
A
A
B
B
- 5 -
Page 7
No.SymptomCheck PointsTreatmentsClass
Provide AC power to a LCD
connect an AC Adapter to a LCD
A It is possible to treated by end-user
B It might be possible to treat by end-user in some case.
C It must be treated by Professional Technical Staff
10
No sound
USB devise does not
11
work(a PC does not
detect an USB Hub)
USB devise does not
work(a PC does not
12
detect an USB
devise)
Is the wire harness between Audio
6
PCB and DC IN PCB securely ?
Is the wire harness to speakers
7
securely ?
8 Is the Audio PCB defective ?
Is a LCD monitor connected to an USB
1
devise securely with USB cable ?
Upon a timing, a PC does not detects
2
an USB Hub
Upon a PC's OS or version, a PC
3
cannot control USB devise
Is the wire harness between main PCB
4
or DC IN PCB and USB PCB secured
firmly ?
Is the wire harness between USB PCB
5
and a relay PCB for USB secured
firmly ?
6 Is the USB PCB defective ?
Is a LCD monitor connected to an USB
1
devise securely with USB cable ?
Upon a timing, a PC does not detects
2
an USB devise
Is the driver software for a USB devise
3
loaded correctly ?
4 Is the USB PCB defective ?
Ensure the connection of a wire
harness
Ensure the connection of a wire
harness
Replace the Volume PCB with
new one, and check the screen
Ensure the connection of the
USB cable
Reinstall the USB cableA
Refer to the user's manual for a
PC and OS. Ensure a PC
supports USB
Ensure the connection of a wire
harness
Ensure the connection of a wire
harness
Replace the USB PCB with new
one
Ensure the connection of the
USB cable
Reinstall the USB cableA
Refer to the user's manual for an
USB devise. Reload it to a PC.
Replace the USB PCB with new
one
B
B
B
A
A
B
B
B
A
A
B
A connected USB
devise in self-
13
powered does not
work
Is the USB devise in self-powered
1
connected with a LCD Monitor AC is
not providing ?
Is the connection between the USB
2
PCB and DC IN PCB secured firmly ?
3 Is the USB PCB defective ?
- 6 -
Monitor. Check Warning is not
displayed. Refer to the User's
manual for an USB devise,
Ensure the connectionB
Replace the USB PCB with the
new one
A
B
Page 8
3. MAINTENANCE
How to remove the major components
(1) Stand Cover
1.Place your fingers in a hollow of the Stand Cover. While pressing the Stand Cover
hollow inside, and pull it your side.
(2) Main unit and Stand
1.Unscrew a Stand at the metal bracket to be secured with a Main unit (4-Screws)
2.Disconnect the USB cable
(3) Cabinet
1.Unscrew a Rear Cabinet (6-Screws)
2.While pressing the top portion of a Front Cabinet, pull the hooks your side
3.Disconnect the lead wires to Switch/LED PCB
(4) Switch/LED PCB and Brightness Volume PCB
1.Unscrew the Switch/LED PCB and Brightness Volume (6-Screws)
2.Disconnect the leads wire from Switch/LED PCB
3.Disconnect the leads wire from Brightness Volume PCB
(5) LCD Panel
1.Unscrew a LCD Panel (4-Screws)
2.Holding a LCD Panel up, then disconnect two lead wires from Inverter unit
3.Disconnect two FPC connectors from the Main Logic PCB
(6) Inverter Units
1.Disconnect lead wires to the Main Logic PCB
2.Unscrew the Inverter PCB (4-Screws)
(7) Main Logic PCB
1.Disconnect a RGB cable
2.Unscrew the shield plate over the Main Logic PCB (5-Screws)
3.Remove the Inverter connector, DC connector and Switch/LED connector
4.Unscrew a metal bracket to be secured with RGB connector (2-Screws)
(8) DC-IN PCB
1.Unscrew the DC-IN PCB (2-Screws)
2.Disconnect the connectors from a Power Switch, the DC connector and the
Audio/USB connector
(9) Power Switch
1.While pressing the hook of a Power Switch, and pull it out
(10) USB PCB in a Stand
1.Unscrew a Stand Base (4-Screws)
2.Remove a Stand Base
3.Unscrew the USB PCB (3-Screws)
4.Disconnect the lead wires from Audio/USB-IN PCB
5.Disconnect the lead wires from AUDIO PCB
(11) AD-IN PCB
1.Unscrew the AD-IN PCB (2-Screws)
2.Disconnect the lead wires from USB PCB
3.Disconnect the lead wires from Audio/USB PCB
(12) Audio PCB
1.Unscrew the Audio PCB (3-Screws)
2.Disconnect the lead wires from Audio/USB-IN PCB
3.Disconnect the lead wires from USB PCB
4.Disconnect the lead wires from Audio/USB-IN PCB
5.Disconnect the lead wires from Speaker (Right/Left)