Sinclair ZX Spectrum

Sinclair ZX Spectrum Service Manual
Spectrum For Everyone https://spectrumforeveryone.com/
46
8.12 TRANSISTORS
Circuit Reference
Issue 2
Issue 2 Mod
Notes
Issue 3
TR1/TR2
ZTX313
-
ZTX313
TR3
ZTX313
-
ZTX313
TR4
ZTX650/TIPP31
-
ZTX313
TR5
ZTX213
-
ZTX213
TR6
ZTX313
-
5
ZTX313
TR7
-
-
ZTX450
TR8/TR9
-
-
BC184/BC549B
8.13 MISCELLANEOUS
Reference
Description
Manufacturer/Part Number
REG
5V Regulator
7805
MOD
UHF Modulator with E36 vision carrier
(UK only)
Astec UM1233
Loudspeaker
40 ohm TV Type
Modulator Screen Insulator
1740
Heatsink
Special (Issue 2 or 3)
Regulator Fixings (1)
Screw, ch hd. 4BA x 15/16 in
Regulator Fixings (2)
Washer, shk prf, 4BA
Regulator Fixings (3)
Nut, hex, 4BA
DIL SKT
16-way (10 off) for 48K expansion RAM
(16K model only)
DIL SKT
14-way (2 off) for 48K expansion RAM
(16K model only)
DIL SKT
28-way for IC1 (ULA)