Short PDF of reference voltages for a Philco main board, with the Portuguese title indicating measured voltages on the principal board. No model or board number is given in the name, so match the layout pictured inside against your own unit. Sheets like this let a technician compare readings on supply rails, regulators and connectors against known good values to find a failed converter or shorted line. Measure with the set powered and the multimeter ground on chassis, and note whether values were taken in standby or on.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @oficinacomputadores. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.