Monday, November 23, 2015

PANASONIC TX-32LMD70FA - TX-32LMD71FA – TX - 32LMD72FA - TX-26LMD70A - TX-26LMD70FA -TX-26LMD71FA LED BLINKING ERROR CODES AND SERVICE MODE

PANASONIC TX-32LMD70FA - TX-32LMD71FA – TX - 32LMD72FA  - TX-26LMD70A - TX-26LMD70FA -TX-26LMD71FA 
LED BLINKING ERROR CODES AND SERVICE MODE 
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 timing chart
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
DG BOARD
2
FAN_SOS
DG BOARD
3

SOS

DG BOARD
P BOARD
4
DTV_9V
DG BOARD
5
MAIN_9V
DG BOARD
6

SUB_5V

DG BOARD
V BOARD
7
MAIN_5V
DG BOARD
8
MAIN_3.3V
DG BOARD
9
SOUND_SOS
DG BOARD
10
HQ1L_SOS

DG 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 cont
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.
Adjustment Method
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
White Balance adjustment
1. Procedure basically performs checking using the production software and
make automatic adjustment using external computer.
2. It adjusts in the mode of : Colour balance Normal as follows.
Viewing Mode Dynamic
32LMD70A
WHITE Normal
x: 0,2860 ± 0,010
y: 0,3090 ± 0,010
GRAY Normal
x: 0,2860 ± 0,010
y: 0,3120 ± 0,010
32LMD70FA
WHITE Normal
x: 0,2860 ± 0,010
y: 0,2960 ± 0,010
GRAY Normal
x: 0,2860 ± 0,010
y: 0,3020 ± 0,010
Setting Inspection
Voltage Confirmation
Confirm the following voltages:
P board
Sub_5V > TP861>  P4, pin 12,13
Panel 5/12V > TP857 > P4, pin 22,23
15V_Audio > TP856 > C3861
9V_Header > TP864 > P4, pin 7,6
STBY_5V > TP863 > P4, pin 16
24V_INV > TP853 > P2, pin1,2,3,4
24V_INV > TP852 > C865
DG board
DTV9V > TP5700 > 9V +/- 0,25V
SUB5V > TP5701 > 5V +/- 0,25V
SUB3,3V > TP5600 > 3,3V +/- 0,25V
MAIN9V > TP5706 > 9V +/- 0,25V
STB5V > TP5702 > 5V +/- 0,25V
SOUND15V > TPS15 > 15V +/- 0,25V
Chassis Board Layout


DG-Board
Global Core, HDMI, IDTV Processor, D/A Converter, AV Connector, Analog tuner, Digital tuner, AV Switch
G-Board
Side AV Connector
P-Board
Main Input, Power Supply, Main Switch
V-Board
Remote Receiver, LED IR, Cats