Panasonic TH-42PA25U-P Service Manual page 39

9. CAT (computer Aided Test) mode
To exit the CAT mode , access the ID mode and switch off the main power.
9.1. IIC mode
Select the IIC mode by Up/Down button on the remote control at the front page of CAT mode then
press the Action button on the remote control.
"IIC mode structure".
To exit the IIC mode, press the RECALL button on the remote control.
9.2. CD mode
Select the CD mode by Up/Down button on the remote control at the front page of CAT mode
then press the Mute button on the remote control more than 5 sec.
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