Tuesday, January 12, 2016

PANASONIC LED Television TX-L42FT60B - TX-LR42FT60 – Servcie mode – LCD panel Checking – Led blinking and causes – Hotel Mode – LED television Repair and Service

Category: LED Television Repair and Service 

Contents of this article 

  • How to Access to Service Mode 
  • How to Access to Hotel Mode
  • Power LED Blinking And Causes 
  • Data Copy Using USB

PANASONIC TX-L42FT60B - TX-LR42FT60 

SERVICE MODE
How to enter into Service Mode
While pressing [VOLUME ( - )] button on the main unit, press the [RED] button on the remote control for 3 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
KEYS USED
# Press the 3/4 button to change the adjustment values or function.
# Press the 1/2 button to step up/down through the functions and adjustments
# Press the numerical button VOLUME (+/-) to change of each option item.
# Press the OK button after each adjustment has been made to store the required values.
How to access Service Tool mode
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
SOS History Dispaly
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 will be cleared by [Self/check indication and forced to factory shipment setting].
ON Timer
Note: To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time: Cumulative power on time, indicated hour: minute by decimal.
On/Off: Number of On/Off switching 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 switch off the power with [Power] button on the main unit.
How to Access Hotel Mode                                           
Access command to the Hotel mode setup menu. In order to display the Hotel mode setup menu, please enter the following command (within 2 second). [TV] : Vol.[Down] + [REMOTE] : AV (3 times)
To exit the “Hotel mode”: Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
How to Copying Data using USB
Preparation
Make pwd file as startup file for (a) or (b) in an empty USB Memory.
1. Insert an empty USB Memory to your PC.
2. Right-click a blank area in a USB Memory 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 (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 be in USB Memory.
How Copying Data from TV to USB
1. Turn on the TV set.
2. Insert USB Memory with a startup file (pwd file) to USB Terminal.
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 USB Memory.
It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in USB Memory for data from TV set.
(a) For Board replacement: user_setup
(b) For Hotel: hotel
How to Copying Data form USB to TV
1. Turn on the TV set.
2. Insert USB Memory with Data to USB Terminal.
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 USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory 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 for board replacement does not work.
2. This function can be effective among the same model numbers.
How to access self check Mode
Self-check indication only:
While pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control.
Self-check indication and forced to factory shipment setting:
While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

How to exit 
self check Mode
Switch off the power with the [POWER] button on the main unit.
Power LED Blinking And Causes
When 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 number of blinking of the Power LED on the front panel of the unit.
 
Blinking times
Contents
Check point
1


BL_SOS
A BOARD
PANEL
3
IROM SOS
A BOARD
7
SUB3.3V/1.2V
A BOARD
8

SOS

A BOARD
PANEL
9
SOUND_SOS
A BOARD
10
FRC_SOS
A-BOARD
12
BE_SOS
A BOARD
13
EMERGENCY
A BOARD
 How to check the LCD panel 
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 [YELLOW] button of the remote control three times.
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.
Voltage conformation of A Board
Description
Test point
Voltage
PANEL12V
TP4000 / TP4001
11.5V – 12.5V
SUB5V
TP5420
4.92V - 5.25V
USB5V
TP5440
5.00V – 5.40V
SD3.3V
TP8671
3.20V – 3.45V
SUB3.3V
TP5400
3.17V – 3.45V
SUB1.8V
TP8714
1.70V - 1.90V
HDMI3.3V
TP8701
3.16V – 3.50V
PRO4_SUB1.5V
TP8101
1.38V – 1.54V
PRO4_SUB1.1V
TP8100
1.00V – 1.24V
GCX_SUB1.5V
TP9501
1.38V – 1.54V
GCX_SUB1.1V
TP9500
1.10V – 1.24V
SAT_2.5V
TP5700
2.37V – 2.63V
SAT_1.2V
TP5703
1.23V – 1.37V
DMD_1.2/1.1V
TP5702
1.11V – 1.23V