Service documentation for the LG K130F phone, packed into an 18.5 MB RAR. LG SVC manuals normally include disassembly steps, troubleshooting guides, block and circuit diagrams and exploded views with part numbers. Technicians use them to locate components, check charging and display circuits and confirm correct replacement parts. Any PDF viewer will open the documents once extracted. Check the model suffix on your device label to make sure the manual covers your exact variant before relying on its values.
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 @SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.