Sinclair ZX Spectrum Service Manual

Sinclair ZX Spectrum Service Manual
Spectrum For Everyone https://spectrumforeveryone.com/
53
9.17 RESISTORS - 0.25W, 5% TOLERANCE UNLESS OTHERWISE STATED
Circuit Ref
Issue 4A
Issue 4B
Issue 5
Issue 6A
Rating +/-
Tol%
NB
R1-R8
470R
470R
470R
470R
R9-R16
8k2
8k2
8k2
8k2
R17-R23
330R
330R
470R
470R
1
R24
1k
1k
1k
1k
6
R25
180R
180R
180R
180R
R26/R27
470R
470R
470R
470R
R28
10k
10k
10k
10k
R29
10k
10k
10k
10k
R30
10k
10k
10k
10k
R31
220k
220k
220k
220k
R32
NOT USED
NOT USED
NOT USED
NOT USED
R33
680R
680R
680R
680R
2
560R
3
R34
15R
15R
15R
0.5 or 1W
2
R35
10k
10k
10k
10k
R36
680R
680R
680R
680R
R37
1k
1k
1k
1k
R38-R41
NOT USED
NOT USED
NOT USED
NOT USED
R42
1k
1k
1k
1k
R43
3k
3k
3k
3k
2%
R44
5k1
5k1
5k1
5k1
2%
R45/R46
1k
1k
1k
1k
R47
1k
1k
1k
1k
R48
2k2
2k2
2k2
2k2
2
R49
10k
10k
10k
10k
2
R50
4k7
4k7
4k7
4k7
2
R51
2k2
2k2
2k2
2k2
2
1k2
3
R52
2k2
2k2
2k2
2k2
R53
390R
390R
390R
390R
R54-R55
NOT USED
NOT USED
NOT USED
NOT USED
R56
1k
1k
1k
1k
2
R57
NOT USED
NOT USED
NOT USED
NOT USED
R58
1k
1k
1k
1k
2%
R59
1k8
1k8
1k8
1k8
2%
R60
220R
220R
220R
220R
R61/R62
15R
15R
15R
15R
R63
1k
1k
1k
1k
2
R64
15R
15R
15R
15R
R65-R67
10k
10k
10k
10k
2
R68
10k
10k
10k
6k8
2
R69
10k
10k
10k
10k
2
R70/R71
220R
220R
NOT USED
NOT USED
R72
10k
10k
10k
10k
R73
1k
1k
1k
1k
2
R74/R75
10k
10k
10k
10k
2
R76/R77
1k
1k
1k
1k
2
R78
470R
470R
470R
470R
R79
NOT USED
NOT USED
2k2
2k2
R80-R86
NOT USED
NOT USED
1k
1k
1
R87
NOT USED
NOT USED
LINK
0
R88
NOT USED
NOT USED
1k
1k0
R89
NOT USED
NOT USED
8k2
8k2
R90
NOT USED
NOT USED
NOT USED
2k7

Sinclair ZX Spectrum Specifications

General

Brand	Sinclair
Model	ZX Spectrum
Category	Desktop
Language	English