ZIP archive of about 2.65 MB holding diode-mode scale values for the Apple iPhone 12 Pro. Such reference sheets list the expected readings, measured with a multimeter in diode mode on a working board, for connector pins such as the display, camera, battery and charging port. A technician compares a faulty phone against these values to spot a shorted line, a missing filter or an open trace without powering the device. Use the same probe orientation the sheet assumes, because reversing red and black probes produces different numbers.
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 @schematic_mobile5. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.