PANASONIC TC-L42D30
SERVICE MODE LED BLINKING
How to access to IIC bus lines
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.
Power LED Blinking timing chart
When an abnormality has occurred the unit, the
protection circuit operates and reset to the stand by mode. At this time, the defective
block can be identified by the number of blinks of the Power LED on the front
panel of the unit.
LED BLINKING CODE LIST
Blinking Times
|
Contents
|
Check point
|
1
|
BACK LIGHT SOS
|
LCD PANEL
P-Board |
3
|
Tuner SOS
|
A-Board
P-Board |
4
|
P15V SOS
|
A-Board
P-Board |
7
|
SUB 3.3V SOS
|
A-Board
|
9
|
SOUND SOS
|
A-Board
Speaker |
10
|
ZWEI2 SOS
|
LCD PANEL
|
13
|
EMERGENCY SOS
|
A-Board
|
LCD Panel test mode
To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.
How to Enter
While pressing [VOLUME ( - )] button of the main unit, press [SUB MENU] button of the remote control three times within 2 seconds.
How to Exit
Disconnect AC plug from wall outlet.
How to confirm
If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns. And then, judge by the following method. Still abnormal picture is displayed: The cause must be in LCD Panel. Normal picture is displayed: The cause must be in A board.
Remarks
The test pattern is created by the circuit in LCD Panel. In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal. If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.
To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.
How to Enter
While pressing [VOLUME ( - )] button of the main unit, press [SUB MENU] button of the remote control three times within 2 seconds.
How to Exit
Disconnect AC plug from wall outlet.
How to confirm
If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns. And then, judge by the following method. Still abnormal picture is displayed: The cause must be in LCD Panel. Normal picture is displayed: The cause must be in A board.
Remarks
The test pattern is created by the circuit in LCD Panel. In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal. If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.
How to enter into Service Mode
After exchange parts, check and adjust the contents of adjustment mode.
While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
After exchange parts, check and adjust the contents of adjustment mode.
While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
Key used for service navigation
[1] button...Main items Selection in forward
direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )
How to exit service mode
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )
How to exit service mode
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
How to enter to Hotel mode
Access command to the Hotel mode setup menu In
order to display the Hotel mode setup menu: While pressing [VOLUME (-)] button
of the main unit, press [INPUT] button of the remote control three times within
2 seconds.
Data Copy by SD Card
(a) Board replacement (Copy the data
when exchanging A-board):
When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.
When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.
(b) Hotel (Copy the data when
installing a number of units in hotel or any facility):
When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other TVs.
When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other TVs.
How Prepare for data copy
Make pwd file as startup file for (a) or (b) in a empty SD card.
1. Insert a empty SD card to your PC.
2. Right-click a blank area in a SD card window, point to New, and then click text document. A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name for (a) or (b) and press ENTER.
Make pwd file as startup file for (a) or (b) in a empty SD card.
1. Insert a empty SD card to your PC.
2. Right-click a blank area in a SD card window, point to New, and then click text document. A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name for (a) or (b) and press ENTER.
File name:
(a) For Board replacement : boardreplace.pwd
(b) For Hotel : hotel.pwd
Note:
Please make only one file to prevent the operation error.
No any other file should not be in SD card.
(a) For Board replacement : boardreplace.pwd
(b) For Hotel : hotel.pwd
Note:
Please make only one file to prevent the operation error.
No any other file should not be in SD card.
Data copy from TV set to SD Card
1. Turn on the TV set.
2. Insert SD card with a startup file (pwd file) to SD slot.
On-screen Display will be appeared according to the startup file automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement : 2770
(b) For Hotel : 4850
Data will be copied from TV set to SD card. It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to SD card, remove SD card from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in SD card for data from TV set.
(a) For Board replacement : user_setup
(b) For Hotel : hotel
1. Turn on the TV set.
2. Insert SD card with a startup file (pwd file) to SD slot.
On-screen Display will be appeared according to the startup file automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement : 2770
(b) For Hotel : 4850
Data will be copied from TV set to SD card. It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to SD card, remove SD card from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in SD card for data from TV set.
(a) For Board replacement : user_setup
(b) For Hotel : hotel
Data copy from SD Card to TV set
1. Turn on the TV set.
2. Insert SD card with Data to SD slot.
On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement : 2771
(b) For Hotel : 4851
Data will be copied from SD card to TV set.
4. After the completion of copying to SD card, remove SD card from TV set.
(a) For Board replacement : Data will be deleted after copying (Limited one copy).
(b) For Hotel : Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data copy for board replacement does not work.
2. This function can be effective among the same model numbers.
1. Turn on the TV set.
2. Insert SD card with Data to SD slot.
On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement : 2771
(b) For Hotel : 4851
Data will be copied from SD card to TV set.
4. After the completion of copying to SD card, remove SD card from TV set.
(a) For Board replacement : Data will be deleted after copying (Limited one copy).
(b) For Hotel : Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data copy for board replacement does not work.
2. This function can be effective among the same model numbers.
