Tuesday, December 22, 2015

PANASONIC TX-L42E30E - TX-LF42E30 - TX-LR42E30 Service mode led blinking and Voltage adjustments

PANASONIC TX-L42E30E - TX-LF42E30 - TX-LR42E30

Replacement of ICs:
When LDA3 IC (IC8000) is replaced, EEPROM (IC8902) should be also replaced with new one the same time.
When EEPROM (IC8902) is replaced, LDA3 IC (IC8000) is not necessary to be replaced the same time.
After the replacement of IC, SELF CHECK should be done to generate the final KEY data.
How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press the STATUS button on the remote control for more than 3 seconds.
TV will be forced to the factory shipment setting after this SELF CHECK
Setting Inspection
Voltage Confirmation
A board
Description
Test point
Voltage
SUB1.2V
TP8100
1.24V - 1.31V
SUB 1.5 V
TP8101
1.47V - 1.55V
SUB3.3V
TP5400
3.17V – 3.43V
SUB5V
TP5420
4.94V – 5.31V
USB5V
TP5440
4.94V - 5.31V
PNL12V
TP4056
11.5 – 12.5V
 P board
Description
Test point
Voltage
Voltage
24V (PANEL)
TP7514
<1V
24V ± 1.2V
16V
TP7503
<1V
16.1V ± 0.7V
TUNER5V8
TP7502
5.7V ± 0.3V
5.7V ± 0.3V
PFC
TP7203
<340V
400V ± 15V
 Self Check
Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep pressing the down (-/v) button on the TV set and press the STATUS button on the remote control. To exit Self Check, switch off the TV set at the power button.
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
Power LED blinking 
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
P BOARD
LD BOARD
3
SOS
A BOARD
4
SUB12V_SENSE_SOS
A BOARD
7
SUB3.3V_SENSE_SOS
A BOARD
9

SOUND_SOS

A BOARD
P BOARD
10

ZWEI_SOS

A-BOARD
TC-unit on panel
12
BE(LDA3)SOS
A BOARD
13
EMERGENCY
A BOARD
14
IROM_SOS
A-BOARD

Service Mode Function
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Menu
How to enter SERVICE MODE
While pressing (-/v) button on the TV unit, press 0 on the remote control for 3 times within 2 seconds.
Note:
To exit from Service mode, press the exit button on remote control.
Key Command
# 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.
Service Tool Mode
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 will be cleared by [Self/check indication and forced to factory shipment setting].
Power ON Time, On/Off
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.
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 setup menu. Disconnect AC power cord from wall outlet.
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
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 for board replacement does not work.
2. This function can be effective among the same model numbers.