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.