DISK APPARATUS AND HEAD APPARATUS
First Claim
1. A disk apparatus comprising:
- a disk;
a magnetic head comprising a plurality of loads including a first load and a second load;
a circuit board comprising a plurality of board terminals including a first board terminal, a second board terminal, and a third board terminal, the first board terminal and the second board terminal electrically connected to the first load, the third board terminal electrically connected to the second load and not electrically connected to the first load;
a preamplifier on the circuit board, configured to apply a voltage to the plurality of loads via the plurality of board terminals;
a first abnormality detection circuit provided between the first board terminal and the second board terminal; and
a second abnormality detection circuit provided between the second board terminal and the third board terminal.
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Accused Products
Abstract
A disk apparatus includes a disk, a head, a circuit board, and an abnormality detection circuit. The head includes a plurality of loads, including at least a first load and a second load, associated with writing or reading of data to or from the disk, and a plurality of head terminals corresponding to and connected to the plurality of loads, respectively. The circuit board includes board terminals corresponding to and connected to the plurality of head terminals, respectively, and a preamplifier that applies a voltage to the loads via the plurality of board terminals during writing or reading of the data to or from the disk. The abnormality detection circuit detects a short-circuit between a first board terminal, which is the board terminal connected to the head terminal of the first load, and a second board terminal, which is the board terminal connected to the head terminal of the second load.
9 Citations
10 Claims
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1. A disk apparatus comprising:
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a disk; a magnetic head comprising a plurality of loads including a first load and a second load; a circuit board comprising a plurality of board terminals including a first board terminal, a second board terminal, and a third board terminal, the first board terminal and the second board terminal electrically connected to the first load, the third board terminal electrically connected to the second load and not electrically connected to the first load; a preamplifier on the circuit board, configured to apply a voltage to the plurality of loads via the plurality of board terminals; a first abnormality detection circuit provided between the first board terminal and the second board terminal; and a second abnormality detection circuit provided between the second board terminal and the third board terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification