Panasonic TX-33AK10.mode service
Bass to max.
Treble to min.
Hold down "index"
Press "-" (minus) on the front of the set
Panasonic EURO-2 mode service
CTV Service Mode
In Sound-Menu Low-tone-regel to maximum and
High-tone-regel to minimum. Press 'F' button on TV.
Then press VOL- on TV and REVEAL on remote control in
some time. Select press red and green buttons.
Adjust press yellow and blue buttons. Store press
'STR'. Exit press 'N' on remote control.
Panasonic TV manuals schematic