Sinclair ZX Spectrum Service Manual

Sinclair ZX Spectrum Service Manual
Spectrum For Everyone https://spectrumforeveryone.com/
44
8.6 COIL
Circuit Reference
Issue 2
Issue 2 Mod
Notes
Issue 3
Rating/Tol
Type
Coil
SPECTRUM
-
-
SPECTRUM
-
1703
8.7 CONNECTORS
Reference
Description
Manufacturer/Part Number
EAR
3.5mm jack socket
MIC
3.5mm jack socket
PWR
2.1mm co-axial socket
KB1
5-way ribbon connector
Molex 5229-05CPB
KB2
8-way ribbon connector
Molex 5229-08CPB
8.8 CRYSTALS
Circuit Reference
Issue 2
Issue 2 Mod
Notes
Issue 3
Manufacture Type
X1
14.000000MHz
-
Note
14.000000MHz
X2
4.433619MHz
-
6
4.433619MHz
8.9 DIODES
Circuit Reference
Issue 2
Issue 2 Mod
Notes
Issue 3
Manufacture Type
D1-D9
1N4148
-
-
1N4148
Signal
D10
1N4148
-
-
-
Signal
D11-D13
1N4148
-
-
1N4148
Signal
D14
1N4148
-
4
-
Signal
D15
BA157
-
-
BA157
Rectifier
D16
5V1
-
-
5V1
Zener
8.10 INTEGRATED CIRCUITS
Circuit Reference
Issue 2
Issue 2 Mod
Notes
Issue 3
Manufacture Type
IC1 (ULA)
5C102
5C112
1
6C001
Ferranti
IC2 (CPU)
Z80A/u780
-
Z80A/u780
IC3/IC4
74LS157N
-
74LS157N
Not National
IC5 (ROM)
SPECTRUM
SPECTRUM
SPECTRUM
NEC/Hitachi
IC6-IC13
4116
-
4116
150ns
IC14
LM1889
-
LM1889
IC15-IC22
TI4532
-
TI4532 48K only
Texas
MCM3732
OKI
IC23
74LS32N
-
74LS32N 48K only
IC24
74LS00N
-
74LS00N 48K only
IC25/IC26
74LS157N
-
74LS157N 48K only
Not National

Sinclair ZX Spectrum Specifications

General

Processor	Zilog Z80A
Clock Speed	3.5 MHz
RAM	16KB or 48KB
ROM	16KB
Graphics	256 x 192 resolution
Sound	1-channel beeper
Storage	Cassette tape
Input	Keyboard
Power	9V DC
Release Year	1982
Display	TV via RF modulator
Ports	Expansion, RF
Colors	15 (8 colours with two levels of brightness each, plus black)