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7925
Appendix A
10
11
12
13
14
A
o
c
A-14
A-15
A-16
A-17
A-18
A·19
A-21
ZERO
CROSSING
DETECTOR
URG
(07)
SEL
(C6)
NOTES:
1. ALL D-TVPE FLIP-FLOPS ARE CLOCKED ON THE RISING
EDGE OF THE CLOCK SIGNAL.
2. REFER TO THE
FOLLOWI~G
FIGURES FOR DIAGRAMS
OF REFERENCED SYSTEMS:
INTEGRATED CONTROLLER.
.
MAINFRAME ASSEMBLY
.
. .
OPERATION CONTROL SYSTEM.
SPINDLE ROTATION SYSTEM.
HEAD POSITIONING SYSTEM.
SECTOR SENSING SYSTEM.
.
FAULT DETECTION SYSTEM.
LOW-PASS
FILTER
SEE
FAULT
DETECTION
SYSTEM
DIAGRAM
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A
7311-101A
10
11
12
13
Figure A-20. HP 7925H Read/Write System,
Functional Diagram
A-61/A-62
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