Troubleshooting
* Check
the various cable connections frst.
* Check to see if there is a burnt or damaged cable.
* Check to see if there is a disconnected or loose cable connection.
* Check to see if the cables are connected according to the connection diagram.
2) Check the power input to the Main Board.
3) How to distinguish if the problem is caused by Main board or Logic Board.
No Video
If the problem is No Video but Logic Board is on and Indication LED is blinking repeatedly and faster than nomal booting, replace the Main/Logic board.
Distorted Picture: Check the Logic test patterns.
* Check to see if there is a burnt or damaged cable.
* Check to see if there is a disconnected or loose cable connection.
* Check to see if the cables are connected according to the connection diagram.
2) Check the power input to the Main Board.
3) How to distinguish if the problem is caused by Main board or Logic Board.
No Video
If the problem is No Video but Logic Board is on and Indication LED is blinking repeatedly and faster than nomal booting, replace the Main/Logic board.
Distorted Picture: Check the Logic test patterns.
How
to check Logic test pattern
a) Entering Factory mode.
b) Move to SVC menu.
c) Move to Test Pattern.
d) Move to Test Pattern.
a) Entering Factory mode.
b) Move to SVC menu.
c) Move to Test Pattern.
d) Move to Test Pattern.
LED
blinking codes
LED
blink time is once per 0.5s – Normal.
LED
Blink interver is 0.3s and Off time 4s – Abnormal.
No
power
* The
LEDs on The front panel do not work when connecting The power cord.
* The SMPS relay does not work when connecting The power cord.
* The units appear to be dead.
* The SMPS relay does not work when connecting The power cord.
* The units appear to be dead.
The
SMPS relay or the LEDs on the front panel does not work when connecting the
power cord if the cables are improperly connected or the Main Board or SMPS is
not functioning. In this case, check the following:
* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Main Board.
* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Main Board.
No
video
Audio
is normal but no picture is displayed on the screen.
The
output voltage of the Main SMPS.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
No
sound
Video
is normal but there is no sound.
When
the speaker connectors are disconnected or damaged.
* When the sound processing part of the Main Board is not functioning.
* Speaker defect.
* SMPS not supplying voltage to the main board.
* When the sound processing part of the Main Board is not functioning.
* Speaker defect.
* SMPS not supplying voltage to the main board.
Service
mode [Factory mode]
How
to enter the service mode
To
enter the service mode, press the remote control keys in the following
sequence.
NTSC:
Standby mode > Mute > 1 > 8 > 2 > Power.
PAL:
Standby mode > INFO > MESNU > MUTE > Power.
If
you have Factory remote control:
INFO
> FACTORY
[if
you don’t have Factory remote control, can’t access some menu.
Service
menu screen
Method
of Color Calibration (AV)
1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port.
2) Press the Source key to switch to “AV1” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “AV Calibration” menu.
6) In “AV Calibration Off” status, press the ►Key to perform calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “AV Calibration” status from Failure to Success.
1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port.
2) Press the Source key to switch to “AV1” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “AV Calibration” menu.
6) In “AV Calibration Off” status, press the ►Key to perform calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “AV Calibration” status from Failure to Success.
Method
of Color Calibration (Component)
1) Apply the 720p Lattice (N0. 6) pattern signal to the Component IN 1 port.
2) Press the Source key to switch to “Component1” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “Comp Calibration” menu.
6) In “Comp Calibration Off” status, press the ►key to perform calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “Comp Calibration” status from Failure to Success.
1) Apply the 720p Lattice (N0. 6) pattern signal to the Component IN 1 port.
2) Press the Source key to switch to “Component1” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “Comp Calibration” menu.
6) In “Comp Calibration Off” status, press the ►key to perform calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “Comp Calibration” status from Failure to Success.
Method
of Color Calibration (PC)
1) Apply the VESA XGA Lattice (N0. 21) pattern signal to the PC IN port.
2) Press the Source key to switch to “PC” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “PC Calibration” menu.
6) In “PC Calibration Off” status, press the ► key to perform calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “PC Calibration” status from Failure to Success.
1) Apply the VESA XGA Lattice (N0. 21) pattern signal to the PC IN port.
2) Press the Source key to switch to “PC” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “PC Calibration” menu.
6) In “PC Calibration Off” status, press the ► key to perform calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “PC Calibration” status from Failure to Success.
Method
of Color Calibration (HDMI)
1) Apply the 720p Lattice (N0. 6) pattern signal to the HDMI1/DVI IN port.
2) Press the Source key to switch to “HDMI1” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “HDMI Calibration” menu.
1) Apply the 720p Lattice (N0. 6) pattern signal to the HDMI1/DVI IN port.
2) Press the Source key to switch to “HDMI1” mode.
3) Enter Service mode.
4) Select the “ADC” menu.
5) Select the “HDMI Calibration” menu.
6)
In “HDMI Calibration Off” status, press the ► key to perfom calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “HDMI Calibration” status from Failure to Success.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “HDMI Calibration” status from Failure to Success.
Adjustment procedure
1) To factory mode.
2) Select ADC/WB menu.
3) Select White Balance menu.
2) Select ADC/WB menu.
3) Select White Balance menu.
Pin
Connection
