TH-70LF50ER - Panasonic TV Service Manual (repair manual). Page 17

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 HA2               DS    IC3120  OK H64 
          IC4701  OK HB0  
          IC4201  OK H8C               
          IC4506  OK H92     
          
                    PTCT    0A  H09                  ADC Adjust             OK 
                                                                          EDID VERIFY           OK    
 
                                                                                        

 ID 

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