Panasonic LH-55RM1MX Service Manual page 40

SECTION 3 ADJUSTMENTS
3.1.4. Select the correct Port above in your computer
* Click "Connect"， then you can see log info are printing.
3.1.5. Save log info
Open "File" Menu and select "log Session" option to save log file.Remember to save log info before the problem appear
ADJ-8