Thursday, January 07, 2016

PANASONIC TX-32LX85P - TX-R37LX85 Service mode led blinking code and Voltage adjustments

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.
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

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.
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.
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
Setting Inspection
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