Zenith Televisions

Using the television's front panel controls:

To access the service menus, press and hold the menu button, then press and hold the volume down (or volume up) and channel down (or right adjust) so that all three are depressed simultaneously. The standard menu that was displayed will change to one of the service menus. Now the standard controls are used to search through the menus (the remote can be used to do this). Use "select" to choose a menu item and "adjust" to alter the setting. Enter commits to a setting, and menu itself closes the service menu. When menu is pressed again the standard menu will return, unless the three key sequence is used.

Using the television's remote control:

Turn the TV on. Hold down the [MENU] key on the remote until the menu clears or "Welcome to Zenith" appears then release the [MENU] key and within two (2) seconds hit the following five keys:

[9], [8], [7], [6], [ENTER]

-or-

[9], [8], [7], [6], [DISPLAY]

You will now have access to the service menus.

[MENU] = Toggles between two menu pages
[UP], [DOWN] cursor = selects the item for adjustment
[LEFT], [RIGHT] cursor = varies the value
[POWER] = exit service mode and saves any adjustments made

The items are appropriately captioned and the ones of interest should be easily spotted.