Sinclair Research ZX Spectrum, Servicing Manual

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SERVICING MANUAL
FOR
ZX SPECTRUM®
• LIST OF CONTENTS
INTRODUCTION
SECTION 1 SYSTEM DESCRIPTION
SECTION 2 DISASSEMBLY/ASSEMBLY
SECTION 3 SETTING UP AND SYSTEM TEST
SECTION 4 FAULT DIAGNOSIS AND REPAIR
SECTION 5 PARTS LISTS
i LIST OF ILLUSTRATIONS i
Fig No.
ZX Spectrum Block Diagram 1.1
E x p a n s i o n RAM RAS/CAS Timing (Read Cycle shown) 1.2
Keyboard Matrix Interconnections 1.3
ZX Spectrum (Issue 2) Circuit Diagram 1.4
ZX Spectrum (Issue 3) Circuit Diagram 1.5
Keyboard Format 4.1
Speaker Load Input Waveforms 4.2
E x p a n s i o n Memory 1C Locations 4.3
Issue 3 L i n k s vs 1C M a n u f a c t u r e r and Type 4.4
Printed Circuit Board (Issue 2) Component Layout 5.1
Printed Circuit Board (Issue 3) Component Layout 5.2
Printed C i r c u i t Board (Issue 3B) Component Layout 5.3
Prepared by THORN ( E M I ) DATATECH LTD
for SINCLAIR RESEARCH LTD MARCH 1984
© Sinclair Research Ltd.
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