Thursday, March 19, 2015

PANASONIC TC-L55WT60 SERVICE MODE AND POWER SUPPLY BLOCK DIAGRAM

PANASONIC TC-L55WT60  

LED LCD

SERVICE MODE AND POWER SUPPLY BLOCK DIAGRAM 

How to enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
Note:
Service Mode can not be entered when 3D signal input.
Input 2D signal to enter Service Mode
Key command
[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
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
Contents of adjustment mode
• Value is shown as a hexadecimal number.
• Preset value differs depending on models.
• After entering the adjustment mode, take note of the value in each item before starting adjustment
SRV-TOOL
How to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].
POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3 sec.
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.
Exit
Disconnect the AC cord from wall outlet or press the [POWER] button on the main unit for 3 seconds to turn off and then turn on automatically.
Hotel mode
1. Purpose
Restrict a function for hotels.
2. 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. Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
LCD Panel test mode
Purpose: 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 [OPTION] button of the remote control three times within 2 seconds.
How to Exit:
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
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.

 POWER SUPPLY BLOCK DIAGRAM 
CLICK ON THE IMAGE TO ZOOM IN