DOWNLOAD Panasonic TH-80LF50ER Service Manual ↓ Size: 11.89 MB | Pages: 88 in PDF or view online for FREE

1.  Self check is used to automatically check the bus line controlled circuit of the LCD display. 
2.  To get into the Self check mode, press the volume down button on the customer controls at the top of the set, 

at the same time pressing the OFF TIMER button on the remote control, and the screen will show. 

 
 
 
If the IIC ports have been checked and found to be incorret, or not located then “- -” will appear in place “OK”   
“0A” in the lie of the “PTCP” means the number of blinks of the  Power LED is 10. (Reference_Power LED blinking timing  
        chart) 
“H09” in the line of the “PTCP” is the error code 
 
To exit the CAT mode switch off the main power. 
 
 
Note: 
The line of the “PTCP” display when you get into the Self check mode for first time only after the Power LED blinks. 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
 
 
 

 
            IIC1           IIC2                       
     
        A       IC4504  OK H64               DS    IC3120  OK H8C 
          IC4701  OK HA0  
          IC4201  OK HB0               
          IC4506  OK H92  
                                                                          ADC Adjust             OK 
                                                                          EDID VERIFY           OK          

    MONITOR-MCU             1.0200LF50          OK 
   MONITER-EEPROM       00.50    20         8804 
   MONITER-SUB MCU           00.50 

 
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 

Name 

PTCT 

indication 

Detect item 

Detect pin 

2 

POWER SOS 

02 H09 

POWER PCB 
*PWR24V, PWR15V, PWR5V Low level detect 

SUB CPU Pin No.40 
(POWER_FAIL1) 

4 

PANEL12V 
SOS 

04 H09 

*PANEL12V Low level detect 

SUB CPU Pin No.51 
(POWER_FAIL3) 

10 DS_SOS 

0A 

H09 

DS PCB 
*SLOT3.3V,SLOT5V.SLOT9V Low level detect 
*SLOT3.3V,SLOT5V.SLOT9V High level detect 
*FunctionBoard_SOS 

SUB CPU Pin No.42 
 

13 

REGULATOR 
SOS 

0D H09 

A PCB 
*D3.3V,DDR1.8V,H3.3V,AS1.8V Low level detect 

SUB CPU Pin No.41 
(POWER_FAIL2) 

  INTERNAL PATTERN – 100% WHITE 

 Color analyzer 
   ( Minolta CA-210 or equivalent )  

Panel surface 

Picture menu: STANDARD 
User setting: Normal 
except PICTURE: max 30  

  Make sure the front panel to be used on the final set is fitted. 

 Center position 

1. Set COMPONENT / RGB-IN SELECT to COMPONENT 
2. Select the IIC mode “LCD Drive Adj.” item. 
3. Check that the color temperature is “MID” 
4. Output a white balance pattern. 
5. Touch the signal receiver of color analyzer to the highlight window’s center. 
6. Fix G drive at 30h and adjust B drive and R drive so x, y become the “Colour 

temperature NORMAL(Mid) in the below table. 

7. At least fix one of the RGB’s drive data at 30h and adjust the others drive so x/y 

(The highest RGB’s drive value is 30h) 

Color Temperature 

x 

y 

NORMAL(Mid) 0.288 

0.296 

            

Adjustment target 
Hi-light. X ± 0.005 y ± 0.005 
Hi-light is target of the number at drive adjustment in the hi–light windows. 
Therefore, it is not target of the hi-light number at after adjustment white balance.  
 
Note : 
 
 

Internal signal: STANDARD 
Aspect: Full 
Picture setting: Standard 
Backlight: 100(Default) 
 

  “7“ key: color temperature select 

Color temperature – Normal 
(Mid.)  

 
 
 
 
Let the panel stand for more than 3 
hours at more than 20 

C. 

Basically perform adjustment in the 
ambient environment of room 
temperature more than 20 

C. 

The aging time is more than20 min 
at above room temperature. 

 

 

Change DRIVE(R,G,B) by UP/DOWN  buttons on the remote control  

+ 

- 

Change Value Register by VOL+/- buttons on the remote control