Sinclair ZX Spectrum

Sinclair ZX Spectrum Service Manual
Spectrum For Everyone https://spectrumforeveryone.com/
6
9.9 Issue 6A Board .................................................................................................................................. 50
9.10 Fault Finding – Servicing Addenda .................................................................................................. 50
9.11 Warranty Seal .................................................................................................................................. 50
9.12 Parts Lists ........................................................................................................................................ 50
9.12.1 Notes ........................................................................................................................................ 50
9.13 Capacitors - Unless otherwise stated all are axial types ................................................................. 51
9.14 Coil .................................................................................................................................................. 52
9.15 Connectors ...................................................................................................................................... 52
9.16 Crystals ............................................................................................................................................ 52
9.17 Resistors - 0.25W, 5% tolerance unless otherwise stated .............................................................. 53
9.18 Diodes ............................................................................................................................................. 54
9.19 Integrated Circuits ........................................................................................................................... 54
9.20 Transistors ....................................................................................................................................... 55
9.21 Miscellaneous ................................................................................................................................. 55
10 Supplement No 2 ................................................................................................................................... 56
10.1 Introduction .................................................................................................................................... 56
10.2 Conversion Procedure – Spectrum to Spectrum+ .......................................................................... 56
10.3 Assembly of the Keyboard for the Spectrum+ ................................................................................ 57
10.4 Keyboard Operation ........................................................................................................................ 57
10.5 Spectrum + Keyboard – Top Membrane ......................................................................................... 58
10.6 Spectrum+ Keyboard – Lower Membrane ...................................................................................... 59