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Manuals
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HP Manuals
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Cisco MDS 9020 - Fabric Switch
Service manual
HP 9020 Service Manual
Hp 9000 series 500 model 520
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Also See for 9020
:
Configuration manual
(1444 pages)
,
Handbook
(141 pages)
,
Update manual
(9 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Chapter 1. General Information
Introduction
Description
Computer Service Documentation
Warnings, Cautions, and Notes
Repair Philosophy
Ac Componentsnoltage Conversion
Ac Componentsn Oltage Conversion
Safety
General Safety Procedure
Safety Guidelines for High-Voltage Testing
Grounding Requirements
Printer Paper Loading
Flexible Disc Media
Computer Cleaning
Case
Air Intake Grill
9130K Flexible Disc Drive Cleaning
Chapter 2. Theory of Operation
Introduction
Computer Block Diagram
Computer Interconnection Diagram
Power Supply Assembly
Ac Module
Primary Board
Secondary Board
Supervisor Board
Status Leds
Power Diagrams
Voltage Sensing Diagram
Safety Grounding Diagram
Processor Stack
Stack Configurations
Processor Stack Block Diagram
Stack Boards
Stack Motherboard
Clock Board
Power Interlock Switch
Cooling
Memory
Memory Organization - 256K Byte RAM
Memory Mapping
Memory Healing
Memory Organization - 512K Byte RAM Board
Memory Mapping
Memory Organization - 1 Megabyte RAM Board
Memory Organization
Megabyte Memory Organization
Megabyte Memory Mapping Operation
Memory Healing
Megabyte Memory Healing
Lop Bus
Keyboard
Lop Bus Interface
Miscellaneous Status and Control
Keyboard Block Diagram
Keyboard and Input Device Scanning
Beeper
Power-Up/Power-Down Sense Circuitry
Display
98770A and 98780A Display Interface Module (DIM)
Display Interface Module (DIM)
98760A Standard Color Graphics Display
Alpha/Interface Board Block Diagram
Graphics/Digital Video Board Block Diagram
Thermal Printer
Logic Board
Motor Drive Board
Paper Sensor Board
Printhead Interconnect Board
Printer Operation
Mass Storage
9130K Flexible Disc Drive Controller Card
Flexible Disc Drive Controller Card Block Diagram
Winchester Fixed Disc Drive Lid Card
Winchester Fixed Disc Drive I/O Card Block Diagram
Motherboard
Power Supply
Processor Stack
Fans
Mass Storage
Printer and Keyboard
Display
Mass Storage Bus
Bootstrap Loader Card
Boot Loader ROM
Reserved Bus
Bootstrap Loader Card Block Diagram
Chapter 3: Testing and Troubleshooting
Introduction
Troubleshooting and Repair Strategy
Hp-Cio
Power-Up Sequence
Repair
Problem Isolation
Self-Tests and Diagnostics Overview
Self-Test Supervisory Code
System Functional Tests
Module Self-Tests
Power Supply
Processor Stack
Module Self-Tests
Printer
Keyboard
Display Interface Module (DIM)
98760A Standard Color Graphics Display
98770A High Performance Color Graphics Display
98780A Monochromatic Display
9130K Flexible Disc Drive/Controller Card
Winchester Fixed Disc Drive/Controller Assembly
Bootstrap Loader Card
Self-Test Supervisory Code
Internal I/O Bus
Memory
Printer
Keyboard
Display Interface Module (DIM)
98760A Display Alpha and Graphics
9130K Flexible Disc Drive/Controller Card
Winchester Fixed Disc Drive/Controller Assembly
System Functional Tests
98760A Display Color Alignment
Overview of Alignment Process
When Needed
Required Equipment
Test Conditions
Overview of the Alignment Process
How It Works
The Intensity Adjustment Procedure
Video Board Pots and Test Points
Sweep Board Adjustments
Early Warning/Fault Tolerance
Overtemperature
Memory Errors
Real-Time Clock/Non-Volatile Memory (RTC/NVM)
Chapter 4. Assembly Access
Introduction
General Safety Procedures
Electrostatic Discharge
Case Parts
Side Doors
Opening Side Door
Front Cover, Including Keyboard Bezel
Removing Side Door
Removing Keyboard Bezel
Rear Cover, Including Display
Unlatching Display
Lifting Display
Removing Rear Cover
Replaceable Assemblies
9130K Flexible Disc Drive Controller Card
Removing Mass Storage Cover
Removing Flexible Disc Drive Controller Card
Winchester Fixed Disc Drive Controller Assembly
Removing Fixed Disc Drive Controller Assembly
Bootstrap Loader Card
Processor Stack
Removing Processor Stack Door
Disconnecting Lop Cables
Removing Processor Stack Clock Board
Removing Processor Stack Cover Plate
Disconnecting Processor Stack Fan Cable
Removing Processor Stack
Display
Display Interface Module (98770A or 98780A Displays)
Removing DIM
Display Alphalinterface Board (98760A Display)
Display Lid
Removing Lid
Keyboard
Removing Keyboard
Printer
Keyboard Language Resistor Configurations
Removing Printhead
Removing Printhead Interconnect Board
9130K Flexible Disc Drive
Removing Flexible Disc Drive
Winchester Fixed Disc Drive
Removing Fixed Disc Drive
Power Supply Assembly
Power Cord
Removing Power Supply Assembly
Ac Module
Removing Ac Module
Line Filter
Removing Display Connector Assembly
Removing Ac Module Cover
Disconnecting Line Filter Wires
Removing Power Switch Assembly
Processor Stack Fan
Power Supply Fan
Motherboard
HP 98760A Standard Color Graphics Display
Exchange Parts
Non-Exchange Parts
Product Support Tools
Extender Board
Product Support Documentation
HP Printer Replacement Paper
Covers Parts List
Chassis Components Parts List
Printer Parts List
Processor Stack Parts List
AC Module Parts List
Winchester Fixed Disc Drive Parts List
Flexible Disc Drive Parts List
Keyboard Parts List
Motherboard Signal Definitions
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See also:
Handbook
HP 9000 Series 500 Computers
Model 520
HP 9020 Service Manual
Flin-
HEWLETT
a:~
PACKARD
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