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Manuals
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Qume Manuals
Floppy Disk Drive
QumeTrak 242
Maintenance manual
Qume QumeTrak 242 Maintenance Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Scope of Manual
General Description
Performance Specifications
Specifications Summary
Reliability and Maintenance
Compati Bi 1 Ity
Read/Write/Erase Head
Read Output Level
Write Current
Switch Filter
Track Positioning
Minimum Read Output Level Requirements
Index Positioning
Interface
Electrical INTERFACE
Recommended Controller Interface Circuit
Interface Connections
Input Lines
Drive Select
Direction
Drive Selection
Step
Write Data
Write Gate
Step Timing
Write Data Timing for Frequency Modulation (FM)
Write Data Timing for Modified Frequency
Side Select
Low Current/Switch Filter
Head Load
In Use
Output Lines
Index
Ready
Track OO
Write Protect
Modulation (MFM) 6 Index Timing
Disk Change
Two-Sided
Alternate I/O Pins
Read Data Timing for Frequency Modulation (FM)
Read Data Timing for Modified Frequency
Timing
Modulation (MFM) 9 Track Access Timing
Read Timing
Write Timing
Physical Interface
Connectors and Cables
I/O Signals (Pl/Jl)
O Signal Connector PI Requirements for a Flat Cable
Interface Connection
Connector Jl Dimensions (Compon~Nt Side)
O Signal Connector PI Requirements for Twisted
Wire Pairs 7 I/O Signal Connector Pl/J1 Pin Assignments
Power (P5/J5)
Terminators
DC Power Connector P5/J5 Requirements
DC Power Connector P5/J5 Pin Assignments
Installation
Receiving and Inspection
Mounting
Mechanical Dimensions
Recommendations
Qumetrak 242 (Top View)
Qumetrak 242 (Side View)
Disk Drive Mounting
Installation Requirements
Customer Strappable Options
Genera
Factory Configuration of the Customer Strappable
PCB Option Features
Programmable Shunt
Drive Select Options
Option 1
Options 12 Programmable Shunt Trace/Cut Functions
Head Load Options
Option 2
Drive Select Options
Option 3
Side Select Options
Radial Ready Option
Radial Index Option
Side Select Options
In Use Options
Opt I on 1
Option 2
Option 3
Door Lock Latch Option
Write Protect Option
Disk Change (Alternate Output)
Two-Sided (Alternate Output)
Disk Change Timing
Intenance
General
Qumetrak 242 Parts Locations (Top View)
Qumetrak 242 Parts Locations (Bottom View)
Preventive Maintenance
Prevent I Ve Ma I Ntenance Summary
Checks and Alignment
Index Lamp Assembly
Index Sensor Assembly
Track 00 Sensor Assembly
Write Protect Sensor Assembly
Carrier Assembly
Pop-Up Assembly
Head Load Solenoid Assembly/Head Gap
Read/Write (R/W) Head Radial Positioning
W Head Radial Positioning ("Cat-Eyes")
Read/Write (R/W) Head Azimuth
Azimuth Check
Read/Write (R/W) Head Amplitude
Subassembly Removal and Installation
Track 00 Sensor Assembly
Track 00 Sensor Assembly Removal and Installation
Write Protect/Motor on Sensor Assembly
Write Protect/Motor on Sensor Assembly Removal
Head Load Solenoid Assembly
Head Load Solenoid Assembly Removal and Installation
Door Lock Solenoid Assembly
Door Lock Solenoid Assembly Removal and Installation
In Use LED
Index Lamp Assembly
Index Lamp Assembly Removal and Installation
Index Sensor Assembly
Index Sensor Assembly Removal and Installation
Main Printed Circuit Board (PCB)
Steel Belt
Stepper Motor
Head Carriage Assembly
Head Carriage Assembly Removal and Installation
Motor Control PCB Assembly
Drive Motor
Front Bezel, Push Button, and Front Door
Media Guide, Pop-Up Assembly
Carrier Assembly
Collet Assembly
Troubleshooting
General
Definitions of Qumetrak 242 Functional Errors
Troubleshooting Technique
Troubleshooting Flowchart Routines
Not Ready Troubleshooting Flowchart Routine
Seek Error Troubleshooting Flowchart Routine
Read Error Troubleshooting Flowchart Routine
Write Error Troubleshooting Flowchart Routine
No Head Load Troubleshooting Flowchart Routine
Recommended Spare Parts
Diagrams
Qumetrak 242 Interconnect Diagram
Qumetrak 242 Main PCB Schematic Diagram
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ume
A Subsidiary of ITT
a=
I)
::::I
C
I)
-
QumeTrak
242
Maintenance Manual
February 1983
2350 Qume Drive
•
San Jose, California 95131
•
TWX 910-338-0232
•
(408) 942-4000
Table of
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Table of Contents
Troubleshooting
TROUBLESHOOTING
67
Troubleshooting Flowchart Routines
68
Not Ready Troubleshooting Flowchart Routine
69
Seek Error Troubleshooting Flowchart Routine
71
Read Error Troubleshooting Flowchart Routine
74
Write Error Troubleshooting Flowchart Routine
77
No Head Load Troubleshooting Flowchart Routine
80
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