File:Panasonic FS-A1WX schematic and parts list (BABAX, Rev 04a).pdf

Hand-traced schematic and parts list of the Panasonic FS-A1WX main board, drawn by BABAX from a board marked PWB No. DFUP0250ZAU1a (serial 8KCKB01501), revision 04a of 9 August 2014 (revision 01 of 10 July 1994, redrawn electronically as revision 02 on 5 August 2014). 8 pages in Japanese and English: page 1 the full circuit, page 2 the board layouts, pages 3 to 8 the parts list "FS-A1WX パーツリスト PARTS LIST 2014.08.05 Rev.02", which gives the value and rating of every capacitor, including the 30 electrolytics. The drawing credits niga (http://niga2.sytes.net/) for information on the FS-A1FX, and the PDF's internal title is "FS-A1WX,FX.WSX_SCHEMATIC_04.CE3". The parts list notes that ROMs and transistors can differ between production lots. It is a community reverse-engineered drawing, not a Panasonic document; its parts list gives IC8 as "V9938 E-VDP-II", where the drawing and the board have a V9958.

Internet Archive item "Panasonic FS-A1WX Service Manual (JP)", https://archive.org/details/panasonicsa1wxsm, file FS-A1WX_SCH_04a.pdf (retrieved 2026-10-21). First published on BABAX's blog at green.ap.teacup.com/junker, now closed.

BABAX

No licence is stated; copyright remains with the author. Hosted for repair reference, with the source cited.