Sinclair ZX81, Assembly Instructions Manual, Page: 37 / 43

K10 4/0 ii
Rll 470 iJ
FH2 170 £2
Rl3 470 £2
R14 470 £2
R15 220K -eel F=-j Velio//
R15 1K =!rowr ;
5
;
<
j
C<
pjsjd
R17 IK
313 IK
R1? IK
R20 IK '
R21 1K -
R22 IK
R23 1K .
R24 1K
R25 1K
P26 1K
P27 IK
R23 6801> .Blue Giey Brown ,-
tu
R29
IM Brown BlacK Green
Fourth
band rr
3
\ be yellow
f^Q Writ u=;Pd
331 - . Mot used
P32 . . . . - - - Not used
R33 4K7 Yelic.-. Purple Red
•T;J 220Q Had ^d Brown
(bl Resistor Packs
No Value Markings Comments
RP1 8 x 1QK I OK£2 , 9 isads
RD2 Not iispd
RP3 5 x 10K 10KS 6 leads
(c) Cdpacitors
No. Values Markings Comments
Cl 47pF ' 47 ' Ceramic disc
C2 47nf 473 Z
C3 22(iF 22 t< Electrolytic 16V mm
C4 47nF 473 Z Ceramic disc
C5 I
)U
F 1 u Electrolytic 5V mm
C6 100pF 100 101, n10 Ceramic disc
C7 47pF 47
CS 47nF 473 2 , •
C9 47nF 473 Z
CIO 10nF 10n 103
C11 47nF 473 Z
C12 47pF 47
(d) Semiconductors
No Type Comment
IC1 Sinclair
Logic 1C 40 pir.s 158 printed underside
IC2 2364 24 pins
IC3 Z80A or D780C-1 40 pins
IC4 MK4118 24 pins
or
IC4a |iPD2114LC
or as IC4b 18 pins