Here you’ll find schematic and layout information for various models of the ZX Spectrum.
16/48K Family
- Issue 1 Schematics and Layout (pdf)
- Issue 2 Schematics and Layout
- Issue 3 Schematics and Layout
- Issue 3B Schematics and Layout
- Issue 4A and 4B Schematics, Issue 4A Layout
- Issue 5 Schematics and Layout
- Issue 6A Schematics and Layout
128/Grey +2 Family
- 128 Issue 6U, analogue and digital side schematics
- +2 Z70500 Issue 3, power section and main PCB schematics
+2A/+2B/+3 Family
Guesser’s Spectrum Schematics page covers the +2A/+2B/+3 family with excellently detailed redrawn schematics.
Modern Versions
Spectrum For Everyone member Dave ‘Steamy’ Briggs has produced some excellent modern versions of the schematic and layout for the ZX81 and Issue 1 Spectrum, and has very kindly allowed us to share them here.
Please credit Dave if you use these.