CONTENTS Title Page Copyright Page Preface 1 Introduction 1.1 Functional Overview 1.2 DEC ChannelServer II Components 1.2.1 Power Supply Switches and Indicators 1.2.2 Central Processing Unit (CPU) 1.2.3 CPU Control Panel 1.2.4 Main Memory 1.2.5 DESQA Ethernet Network Controller 1.2.6 Channel Interface 1.2.7 Q22A-Bus Backplane 2 Installing Software Diagnostics 2.1 Installing the Diagnostic Software 3 Using MDM Diagnostics 3.1 MDM Diagnostic Tests 3.2 Loading the MDM Diagnostics 3.2.1 Performing MDM Tests 3.2.2 Field Replaceable Unit (FRU) testing 3.2.3 Testing the Ethernet Module 3.2.3.1 Ethernet LEDs 4 Using DESNX Diagnostics 4.1 Using DESNX 4.1.1 Initial Dialog 4.1.2 Test Procedure 4.2 Problem Solving 4.2.1 Channel Interface Not Found 4.2.2 No Channel Connection 4.2.3 Channel Not Responding 4.2.4 Driver/Receiver Module Disabled 4.2.5 Wrong Channel Address Used 4.2.6 No Sense Command Received 4.2.7 No Datalink Connection Message 4.2.8 No Physical Unit Activation Message 4.2.9 No Logical Unit Activation Message 4.2.10 Channel Parity Errors 4.2.11 Invalid 3174-1L Commands 4.2.12 System Bugcheck Problems 5 Replacing FRUs 5.1 Introduction 5.2 Field-Replaceable Units 5.3 Removing and Installing the Cover 5.4 Removing and Installing the Power Supply 5.5 Removing and Installing the AC Switch Assembly 5.6 Removing and Installing the AC Line Filter 5.7 Removing and Installing the Fans 5.8 Removing and Installing the CPU or Memory Modules 5.8.1 Removing the CPU or Memory Module 5.8.2 Unpacking and Inspecting the Module 5.8.3 Installing the CPU or Memory Module 5.9 Removing and Installing the Ethernet Controller Module 5.9.1 Removing the Ethernet Controller Module 5.9.2 Unpacking and Inspecting the Module 5.9.3 Verifying the Module Switches or Jumpers 5.9.4 Configuring the DESQA Module for Thickwire or ThinWire Ethernet Operation 5.9.5 Swapping the Ethernet Address Chip and Address Plate 5.9.6 Installing the Module 5.9.7 Connecting the Ethernet Cable 5.9.7.1 Connecting to a Thickwire Ethernet LAN 5.9.7.2 Connecting to a ThinWire Ethernet LAN 5.9.8 Testing the Module 5.10 Replacing the Channel Interface Module Set and Connector Blocks 5.11 Replacing the Driver/Receiver Module 5.12 Completing the FRU Replacement Procedure A Functional Specifications A.1 Mechanical Specifications A.2 Environmental Specifications A.3 Power Requirements A.4 Cabling Information B FRU Parts List B.1 Module Part Numbers B.2 Assembly Part Numbers B.3 Cable Part Numbers FIGURES 1-1 Front View of the DEC ChannelServer II 1-2 Front View of the DEC ChannelServer II (Cover Removed) 1-3 Sample Network Configuration of the DEC ChannelServer II 1-4 Complete DEC ChannelServer II System 1-5 The DEC ChannelServer II Power Supply 1-6 CPU Control Panel 3-1 Channel Enable/Disable Switch Location 3-2 Introductory Countdown 3-3 MDM Introductory Screen 3-4 MDM Main Menu 3-5 System Configuration and Devices Menu 3-6 Ethernet LEDs 4-1 Introductory Countdown 5-1 Removing the Cover 5-2 Installing the Cover 5-3 Removing the Ventilation Plate 5-4 Removing and Installing the Power Supply 5-5 Removing Screws from the AC Switch Assembly 5-6 Removing the AC Switch Assembly 5-7 Unplugging the AC Power Cable 5-8 Removing the AC Line Filter 5-9 Disconnecting the Fan Power Cords 5-10 Removing and Installing the Fan 5-11 Removing the CPU Cover Panel 5-12 Removing a Thickwire Ethernet Cable 5-13 Removing a ThinWire Ethernet Cable 5-14 Removing the Module 5-15 DESQA Switches, Address Plate, and Address Chip 5-16 Removing the Ethernet Address Chip 5-17 Installing the Ethernet Address Chip 5-18 Installing a Thickwire Cable 5-19 Installing the ThinWire Ethernet Cable 5-20 Ethernet Controller Module LEDs 5-21 Location of the Channel Interface Module Set 5-22 Channel Interface Module Switch Locations 5-23 Bus and Tag Cables 5-24 Removing the Driver/Receiver Module TABLES 1-1 Power Supply Indicators and Switches 1-2 CPU Control Panel Components 3-1 Ethernet Controller Module LED Indications 5-1 DEC ChannelServer II Field Replaceable Units 5-2 DESQA Switch Configuration and Functions 5-3 Ethernet Controller Module LED Indications 5-4 Channel Interface Module Switch Locations A-1 Dimensions of the DEC ChannelServer II A-2 System Environmental Specifications A-3 Power Requirements B-1 Module FRU Part Numbers B-2 Assembly FRU Part Numbers B-3 Power Cable Part Numbers B-4 System Cable Part Numbers