PT90 Service Mode (Modo de Serviço)
Service Menu PT-90a: The service menu is entered by pressing a special 4-digit code in the feature menu is displayed and tv is in FE-Mode. While TV is in AV Mode and fetura menu is displayed,pressing sequence of digits 1923 will enter in the TV to service mode an service menu will be displayed.
1. Press Menu. 2. Select Features (caracteristicas). 3. Press volume + and enter 1923. 4. Exit SERVICE mode by pressing exit 3 times