I have the single tuner Motorola DVR on Comcast. All I could find by searching are these basic instructions to bring up the service menu:
# Press POWER (turning the DCT6208 off) and then immediately press SELECT.
# Use the CHANNEL UP/DOWN to move the cursor and press "SELECT" to execute.
# Press POWER to exit the menu.
But when I do this everything seems read only and informational. A cable tech was out here yesterday and switched a 4:3 mode in some way and also my coax out (I feed a distant room) now no longer shows info overlays/menus when viewing an non-HD program (this used to only be the case when displaying an HD broadcast).
Any hints on how to modify 4:3 settings? Can someone send me a service manual or a URL to more detail instructions?