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Xerox Century Data Systems Trident Series Maintenance Manual

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Table Of Contents

Table of Contents

Record of Revisions
Table of Contents
Section 1 General Information
Related Documents
Description
Specifications
Operating Specifications
Metric Conversion Table
Special Tools and Test Equipment
Major Component Locations
Controls and Indicators
Operator Control Panel
Maintenance Switches
Disk Pack Handling
Operating Controls and Indicators
Exerciser Installation and Removal
Maintenance Operating Procedures
Standalone Grounding Precautions
Section 2 Preventive Maintenance
Cleaning
Preventive Maintenance Routines
Read/Write Head Configuration
Read/Write Head Problems
Bimonthly (60 Day) Preventive Maintenance Schedule
Annual Preventive Maintenance Schedule
Routine Head Maintenance
Inspecting Installed Heads
Cleaning Installed Heads
Head Crash Recovery
Dry Load Recovery
Cleaning the Disk Pack Area
Pack Cleaning Brushes
Cleaning and Lubricating the Spindle
Disk Pack Area Components
Spindle Grounding Brush Check
Spindle Drive Belt Check
Cleaning the Intake Air Filter
Replacing the Absolute Air Filter
Power Supply Checkout
Power Supply Voltage Check
Indicator Lamp Replacement
Section 3 Checks, Adjustments and Replacements
Maintenance Notes and Precautions
Using the Special Tools
Special Tools for the R/W Heads
Special Tools for the Positioning System
Read/Write I-Lead Removal
Head Handling, Cleaning, and Inspection
Servo Head Installation
Head Alignment Checkout and Adjustment
Power Supply
Head Alignment Dibit Waveforms
Card Cage Assembly
Plug-In Card Locations
Access to Logic Test Points
Card Cage Removal and Replacement
Power Supply Cable Dressing
Servosystem Alignment (All Models)
PLO Frequency Adjustment
Plug-In Card Locations
Seek Velocity Adjustment
Card Cage in Raised Position
Track Offset Adjustment
Position Balance Adjustment (T50 and T80 Only)
Read/Write System Alignment (25 and T50)
Read/Write System Alignment (TSO)
Balance Adjust Waveform
Reference One-Shot Adjustment Waveform
Skew One-Shot Display Waveform
Read/Write System Alignment (TSO)
Data Separator Test and Adjustment Points (TSO)
Skew One-Shot Adjustment Waveform
Carriage-Actuated Microswitches
Heads-Extended Microswitch Checkout and Adjustment
(Tso)
Heads-Extended Microswitch Replacement
Carriage Microswitch Locations
Microswitch Adjustment Clearance
Off-Rack Microswitch Checkout and Adjustment
Off-Rack Microswitch Replacement
Air Shroud Assembly
Air Shroud Assembly Removal
Front and Rear Cover and Bottom Access Cover Removal (Exploded View)
Absolute Air Filter Replacement
Pack Area Lid Spring Adjustment
Pack Area Lid Removal
Pack Area Lid Gasket Replacement
Air Shroud Filter Recess with Retaining Screws Shown
Pack Area Lid Tension Spring Adjustment Nut Location
Pack Area Lid Removal
Pack Area Lid Removal Using Lid Installation Tool
Lid-Open Microswitch Checkout and Adjustment
Lid Open Switch and Solid State Buzzer Component Locations
Connector J30 Pin Locations
Lid-Open Microswitch Replacement
Read/Write Matrix Board Replacement
Servo Preamp Board Replacement
Relay Assembly Replacement
Sequence Relay Assembly Component Locations
Blower Assembly Replacement
Transformer Assembly Replacement
Air Duct and Blower Assembly Removal (Exploded View)
Ac Input Control Assembly Replacement
Spindle Drive System
Transformer Assembly and Ac Input Control Replacement (Exploded View)
Drive Belt Replacement
Grounding Brush Replacement
Ac Input Control Assembly (Rear View)
Speed Transducer Checkout and Adjustment
Spindle Drive Component Locations
Speed Transducer Gap Limits
Speed Transducer Replacement
Spindle Lock Assembly Adjustment
Spindle Lock Assembly Replacement
Spindle Drive Motor Replacement
Spindle Assembly Replacement
Spindle Lock Assembly
Head Positioning System
Linear Motor Bobbin Checkout
Spindle Assembly Replacement (Exploded View)
Velocity Transducer Replacement
Bobbin Resistance Check Points
Velocity Transducer Components and Tool
Linear Motor Replacement (Exploded View)
Motor Bobbin Alignment
Bobbin Mounting Screw Locations
Linear Motor Bobbin Replacement
Bobbin Shims in Place
Carriage and Way Alignment Check
Calibration of Alignment Tool Indicators
Carriage and Way Mounting Bolts Location with Carriage and Way Alignment Tool Installed
Carriage and Way Alignment Tool Installed
Carriage and Way Assembly Replacement
Way Roll Adjustment Tool in Place with Linear Motor Band Held Away
Section 4 Superceded Procedures
Indicator Testing
Head Alignment Using Micrometer-Type Head Alignment Tool
Head Alignment Tool in Use
Head Alignment Dibit Waveforms
Read/Write System Alignment (Early TSO)
Tso)
Brushes and Brush Drive Assembly
Inspecting Disk Cleaning Brushes
Skew One-Shot Display Waveform
Brush Replacement
Brush Drive Component Locations
Brush Holder Defects
Brush Alignment Check
Section 5 Maintenance Aids
Bus Definitions

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Xerox Century Data Systems Trident Series Maintenance Manual

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