Sinclair ZX Spectrum Service Manual

Sinclair ZX Spectrum Service Manual
Spectrum For Everyone https://spectrumforeveryone.com/
55
9.20 TRANSISTORS
Circuit Reference
Issue 4a, 4b, 5, 6a
NB
TR1-TR2
ZTX313/MPS2369/MPS2713/KSC945-Y
TR3
ZTX313/MPS2369/MPS2713/KSC839-0
2 and 6
TR4
ZTX650/TIPP31/KTC2236A-7
7
TR5
ZTX231/BC213/BX214/FRB925
TR6
ZTX313/MPS2369/MPS2713
TR7
ZTX450
TR8/TR9
BC184/BC549B
2
9.21 MISCELLANEOUS
Reference
Description
Manufacturer/Part Number
REG
5V regulator
7805
MOD
UHF modulator with E36 vision
carrier (UK only)
Astec UM1233 (UM16--- for
VHF versions)
Loudspeaker
40 ohm TV type
G. English (Merry)
Modulator Screen Insulator
-
Stafford Rubber SRC090
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
DIL SKT
14-way (2 off) for 48k expansion
RAM (16K model only)
DIL SKT
DIL SKT
28-way for IC1 (ULA)

Sinclair ZX Spectrum Specifications

General

Brand	Sinclair
Model	ZX Spectrum
Category	Desktop
Language	English