Portland PT-1901

Service Menu Portland PT-1901
With the TV turned on press the following sequence on the remote control: 1, MUTE,
RECALL, MUTE. 1, MUTE, DISPLAY MUTE in models which do not have the
RECALL key. To select the item: CANAL + / - to adjust: VOL + / -.
To return or end press MENU. To save changes press
DISPLAY before exiting.