Category: LCD Television repair and service
Contents of this article
- How to enter to service mode
- Led blinking code
- Testing Voltages
PANASONIC TX-32LX85P - TX-R37LX85
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.
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.
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.
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
|
INVERTER_SOS
|
LCD
PANEL
A BOARD |
2
|
FAN_SOS
|
A
BOARD
|
3
|
SOS
|
A
BOARD
|
5
|
MAIN_9V
|
A
BOARD
|
6
|
SUB_5V
|
A
BOARD
V BOARD, P BOARD |
7
|
SUB_3.3V
|
A
BOARD
|
8
|
MAIN_3.3V
|
A
BOARD
|
9
|
SOUND_SOS
|
A
BOARD
|
10
|
HQ1L_SOS
|
A
BOARD
|
13
|
EMERGENCY
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
While pressing (-/v) button on 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.
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
While pressing (-/v) button on 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 option item.
# Press the OK button after each adjustment has been made to store the required values.
# 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 option item.
# Press the OK button after each adjustment has been made to store the required values.
Subcontrast
adjustment
1. Receive PAL colour bar (100% white) RF signal.
2. Enter “Contrast” adj. In SERVICE mode.
3. Start adjusting by using Yellow Key.
4. If the adjustment finished normally, the letter of Contrast will change from red to black
1. Receive PAL colour bar (100% white) RF signal.
2. Enter “Contrast” adj. In SERVICE mode.
3. Start adjusting by using Yellow Key.
4. If the adjustment finished normally, the letter of Contrast will change from red to black
Setting
Inspection
Voltage Confirmation
Voltage Confirmation
P board
Description
|
Test
point
|
Position
|
Normal
mode
|
Panel
12V
|
TP863
|
P2,
pins 16, 17
|
12,0V
+/- 0,35V
|
16V_Audio
|
TP858
|
P2,
pins 20, 21
|
16V
+/- 1V
|
SUB_9V
|
TP860
|
P2,
pins 11, 12
|
9V
+/- 0,25V
|
STBY_5V6
|
TP853
|
P2,
pins 1, 2
|
5,65V
+/- 0,25V
|
24V_IN
|
TP856
|
P2,
pins 7, 8
|
24V
+/- 1,5V
|
A board
Description
|
Test
point
|
Normal
mode
|
SUB
1,8V
|
TP5602
|
1,76V
– 1,85V
|
SUB 1,2V
|
TP5601
|
1,22V
– 1,27V
|
SUB
3,3V
|
TP5600
|
3,19V
– 3,39V
|
SUB5V
|
TP1011
|
4,75V
– 5,25V
|
DVDDIO3,3V/TVDD3,3V
|
TP4531
|
3,23V
– 3,37V
|
BT30V
|
TP2905
|
29,5V
– 31,5V
|
DVDD1,8V
|
TP4529
|
1,77V
– 1,83V
|
AUD3,3V
|
TP2031
|
3,23V
– 3,37V
|
DVDD1,8V
|
TP2032
|
1,77V
– 1,83V
|
5V
|
TP2030
|
4,75V
– 5,25V
|
STB
3,3V
|
TP7601
|
3,23V
– 3,37V
|
MHQLV3,3V
|
TP4235
|
3,24V
– 3,41V
|
MHQDDRR2,5V
|
TP4210
|
2,44V
– 2,56V
|
HQ3,3V
|
TP4200
|
3,18V
– 3,47V
|
MHQVD1,2V
|
TP4201
|
1,19V
– 1,26V
|
MHQVD3,3V
|
TP4300
|
3,24V
– 3,41
|
