Honeywell BR3C9 Operation Manual page 9

Clock Generation 3-68 Write Compensation
3-84
Write Clock 3-71 Write Driver Circuits
3-88
Index Detection Circuit 3-72 Writing Address Marks 3-88
Sector Circuit 3-72
Write Fault Detection 3-88
Read/Write Operations
3-72 Read Operations
3-90
General 3-72
General 3-90
Head Selection
3-72
Baste Read Sequence
3-90
Basic Read/Write Principles
3-76
Read
Circuits
3-92
General
3-76
Sense Operations
3-103
Track Format
3-76
General 3-103
Principles of
MFM
Recording
3-78
Summary Status Request
3-103
Disk Surface Recording
3-79
Fault Detection
3-104
Write Operations
3-79
Diagnostic Operations
3-104
General
3-79
General
3-104
Basic Write Sequence
3-79
Diagnostic Commands
3-104
Serdes Serializer
3-82 Write Test Diagnostics
3-104
FIGURES
1-1
Assembly Locations 1-1
3-22
First Seek Timing
3 ... 51
2-1
Controls and Indicators 2-5
3-23 Direct
Seek Flow Chart 3-53
2-2
Off
Line Tester
2-8
3-24 Direct Seek Timing
3-55
3-1 Simplified Logic Symbology
3-2
3-25
RCB Flow Chart 3-60
3-1.1
Local/Remote Power Sequencinq
3-26 RCB Timing
3-61
Control Circuits
3-4.2
3-27
Track Servo Circuit Simplified
Schematic
3-62
3-102 Remote Mode Power Sequenc:inq
3-4.2
3-28 Disk Surface Layout 3-65
3-2 Power Distribution
3-5 3-29
Track Servo Circuit Simplified
3-3 Power Sequencing
3-6
Signals 3-69
3-4 Power Interlocks 3-7
3-30 Dibits Detect
3-69
3-5 Power
Off
Timing 3-10
3-31
Cylinder Pulses Generation -3-70
3-6 Deck Assembly 3-12
3-32 Machine Clock Circuit 3-71
3-7 Spindle Assembly
3-13
3-33 Index Detection Circuit 3-73
3-8 Actuator Assembly Elements
3-14
3-34 Sector Circuit 3-74
3-9 Head Loading 3-15
3-35 Read/Write Circuits Block Diagram 3-75
3-10
Head
I
Arm Assembly Motion
3-16
3-36 Head Selection Circuit 3-77
3-11
Speed Detection
3-17
3-37 MFM Recording 3-78
3-12 Velocity Detection
3-18
3-38
Magnetic Recoding 3-80
3-13
Blower System
3-18
3-39
Read Current 3-80
3-14 Drive Block Diagram
3-21
3-40
Write Circuits 3-81
3-15 Device Level Interface Lines
3-22
3-·n Write
Timing 3-83
3-16
Command Decode
and
Abbreviations
3-23
3-42 Write
Irregularity 3-85
3-17 Command Decoding Logic
3-24
3-43 Read Shift 3-86
3-18 SRI Timing
3-42
3-19 Servo Circuits Simplified Schematic
3-46
3-20 Servo Circuit Simplified Signals
3-47
3-21 First Seek Flow Chart
3-50
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