Service manual

Contents
Important Note 1
Static Sensitive Devices – Handling Precautions 2
Introduction 2
Handling of Static Sensitive Devices 2
General Precautions 2
System Overview 3
Architecture 3
Transputer Types and Function 4
Control Topology 5
Reset and Services 6
Transputer Services Logic 7
Booting the System and Isolating System Faults 8
The boot sequence can be divided into two main sections 8
Console system boot 8
Encore Boot Sequence 9
Booting the Standalone IOS Rack 10
Card Descriptions and LED Interpretations 11
Encore Processor Unit Cards 12
Enhanced Link Adaptor (SUN820-183) 12
Encore Front Panel Indicator Board (SUN820-194) 13
SPS Rack Cards 14
Processing Cards 15
Control Cards 15
QuadMADI (SUN820-211 and SUN820A211) 16
QuadMADI (SUN820-211 and SUN820A211) continued 17
QuadMADI (ESP) (SUN820-204, A204, B204 and C204) 18
Issue 3 Page i
Digital Service Manual