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D3400
Operating and service manual
PCC D3400 Operating And Service Manual
Disk drives
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Table of Contents
Model Identification
Physical Description of Equipment
Purpose of Equipment
Functional Description
Mechanical and Electrical Specifications
Introduction
Uncrating the Disk Drive
Initial Checkout Procedure
Slides
Installation of Slide Set Part NO.1 02731
Installation of Slide Set Part No. 103670
3.2 Cartridge Handling and Storage
Introduction
Section 111- Operation
3.3 Disk Drive Preparation
3.4 Cartridge Loading and Unloading
Loading a Cartridge, Front Load Models
Unloading a Cartridge, Front Load Models
Loading a Cartridge, Top Load Models
Unloading a Cartridge, Top Load Models
Designating Unit Number
Selecting Write Protection
Starting the Disk Drive
Stopping the Disk Drive
CE Alignment
Interlock Protection
Periodic Maintenance
Safecondition
Emergency and Fault Detection
Manual Controls
On/Off
Run/Stop
Ready
3.14.4 Safe
PROT (Protect)
Unit Number Selector Switch
Write Protect Sw I Tehes
03000 Interfacing
3.16.2 Platterselect
Head Select
3.16.4 Cylinder Address Strobe
Cylinder Demand Address (9 Lines)
Restore Initial Cylinder
Write Enable
Erase Enable
3.16.9 Write Data Signal
Read Enable
Trackoffset
Activate Emergency Unload
3.16.13 Start/Stop Disk Drive
Interface Outputs (Disk Drive to Controller)
Ready
Busy Seeking (4 Lines)
3.17.3 Sector Pulse
Sector Count Lines
Index Pulse
Read Clock
Read Data
Illegal Cylinder Address
File Protected
Malfunction Detected
Dual Platter
Double Track Drive
Special Interface Signal
Section IV - Theory of Operation
Introduction
Organization of the Disk Drive
Main Chassis Group
Positioner Assembly
Power Supply Assembly
Read/Write, Servo, and Logic Pcbas
Temperature Compensation PCBA (200 Tpi Models)
Functional Subsystems
Positioner and Positioner Electronics
Positioner Assembly
Positioner Electronics
Read/Write Electronics
Head Select
Write Electronics
Read Electronics
Logic Functions and Control
Disk Drive Functional Control
Spindle Speed Control
4.7.4 Position Control Logic
Sector Electronics
Motor Control
Power Supply
Temperature Compensation (200 Tpi)
Section V - Detailed Electrical and Logic Description
Introduction
Logic Term Mnemonic Identification
Servo PCBA
Voltage Regulators
Positioner Servo Electronics
AC Motor Control Circuits
Cartridge Lock Solenoid Driver
Power Clear Control Circuit
Head Selection Matrix and Select Amplifier
5.4.2 Write and Erase Drivers
Read Switch
Read Preamplifier
Filter
Variable Gain Amplifier
Peak Detector, Squarer, and Pulse Former
Data Decoder Circuitry
Emergency Condition Detection
Logic PCBA
Sheet 2 (Schematic No. 102830)
Clock Countdown
Sheet 3 (Schematic No. 102830)
Sheet 4 (Schematic No.1 02830)
Sheet 5 (Schematic No.1 02830)
Motor Control PCBA
5.7 Temperature Compensation Pcba
Section VI - Maintenance and Troubleshooting
Introduction
Fuse Replacement
Scheduled Maintenance
Maintenance Philosophy
Fuse Requirements
Preventive Maintenance Schedule
General Maintenance
General Precautions
Cleaning the Disk Drive
Cleaning the Spindle
Cleaning the Positioner
Part Replacement Adjustments
Electrical Adjustments
Adjustment Philosophy
AC Motor Speed Control
Positioner Servo Calibration
Positioner Preparation for Static Tests
90 Gain and Balance
And X +90 Signal Polarity and Quadrature Check
Heads Retracted Signal Check
Index Balance
Velocity Transducer Phasing
Positioner Voice Coil Polarity Check
Power-Down Procedure
Dynamic Positioner Adjustments
Positioner Preparation, Dynamic Tests
Dynamic Adjustments
Dynamic Reticle-To-Scale Phase Adjustments
Current Adjustment
Seek-Time Adjustment
Overshoot Test Procedure
Overshoot Adjustment Procedure
Index to Quadrature Clock Relationship
6.9.9 Overshoot and Settling Response Procedure
Repetitive Track Seek Settings for Overshoot and Settling Response Tests
Performance Checks
Servo and Positioner Test
Spindle Speed Accuracy Test
Sector Phase-Lock-Loop Adjustment
Test Configuration
Test Procedure
Adjustment Procedure
Read Decode Circuit Adjustments
Read Pulse Narrow (RPN) Pulsewidth Adjustment
Ones' Window Setting
RPN Pulsewldth Values
Data and Clock Pulsewidth
Temperature Compensation (200 Tpi Only)
Temperature Compensation Tests and Adjustments
Scaling Resistor Verification
Environment Temperature Adjustment
Voltage Tolerance at TP4
Cylinder Address Voltage Limits at TP4
CE Alignment Procedure
Front Loading CE Disk Cartridge
Top Loading CE Disk Cartridge
CE Cartridge Stabilization
Test Configuration - All Models
Radial Alignment - Front Load
Circumferential Alignment - Front Load
Radial Alignment-Top Load
Circumferential Alignment-Top Load
6.15 Cartridge Interlock System - Front Load Models
Adjusting Interlock System
Cartridge Interlock System - Top Load Models
Checking the Interlock System
Adjusting the Interlock System
Bezel and Power Switch
Removal of Bezel
Installation of Bezel
Removal of Power Switch Bracket
Magnetic Transducer Gap
Upper Transducer Test and Adjustment - Top Load Models
Upper Transducer Calibration Data
Lower Transducer Alignment - Top Load Models
Lower Transducer Alignment - Front Load Models
Disk Drive Pulley System
Belt Removal
Belt Replacement
Pulley and Belt Identification
Static Discharge Contact
Care and Handling of Heads
Head Removal and Installation
Head Removal Procedure
Head Installation Procedure
Lamp/Lens Assembly Removal and Installation
Lamp/Lens Assembly Removal
Lamp/Lens Assembly Installation
Reticle Removal and Installation
Reticle Removal
Scale Assembly Removal and Installation
Scale Assembly Removal
Scale Assembly Installation
Air Filter
Pre-Filter Cleaning
Removal of Absolute Filter
Replacement of Absolute Filter
Power Supply
Power Supply Removal
Power Supply Installation
Drive Motor
Drive Motor Removal
Drive Motor Installation
Maintenance Tools
Illustrated Parts Breakdown (IPB)
Integrated Circuit Pin Summary
Introduction
Part Number Cross Reference List
PCBA Interconnections
Recommended Spare Parts
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Model Identification
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MODEL NO.
V
~£f22-
MODELS 03300 AND D3400
DISK DRIVES
- _ ..... PSlTEC
COmpUT'EA
..... _
COAPOAATlOn
PERTEC DIVISION
9600 IRONDALE AVENUE, CHATSWORTH, CA91311
OPERATING AND SERVICE MANUAL NO. 104630
'2;
1978 by Partee Computer Corporation
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