Sunday, October 25, 2015

PANASONIC TX-37LZD70 - TX-37LZD70F SERVICE MODE LED BLINKING ERROR CODE AND BLOCK DIAGRAM

PANASONIC TX-37LZD70 - TX-37LZD70F

 SERVICE MODE LED BLINKING ERROR CODE AND BLOCK DIAGRAM 

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
1. Subject
Information of LED Flashing timing chart.
2. Contents
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
DG BOARD LCD PANEL
2
FAN_SOS
H BOARD DG BOARD
3
BT_30V,SOUND 15V PANEL 12V, HQ_ 3.3V
H BOARD AP BOARD,DG BOARD
4
DTV_9V
AP BOARD H BOARD, DG BOARD
5
MAIN_9V
AP BOARD H BOARD, DG BOARD
6
SUB_5V
AP BOARD H BOARD, DG BOARD
7
MAIN_5V
DG BOARD
8
MAIN_3.3V
 DG BOARD
9
SOUND_SOS
H BOARD 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 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.
Adjustment Method
Sub-Contrast/White Balance Adjustment
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 Viewing Mode Dynamic
LZD70
WHITE Normal
x: 0,2880 ± 0,010
y: 0,3100 ± 0,010
GRAY Normal
x: 0,2880 ± 0,010
y: 0,3100 ± 0,010
LZD70F
WHITE Normal
x: 0,2860 ± 0,010
y: 0,3000 ± 0,010
GRAY Normal
x: 0,2860 ± 0,010
y: 0,3000 ± 0,010
BLOCK DIAGRAM OD THE TV 
CLICK ON THE IMAGE TO ZOOM IN