Method for head stack assembly rework
First Claim
1. A method for head stack assembly (HSA) rework, comprising:
- removing a first head gimbal assembly (HGA) from the HSA, the first HGA including a first suspension that is attached to an arm of the HSA, the first HGA also including a first flexure tail that terminates in a first bonding region that is bonded to a flexible printed circuit (FPC) of the HSA, wherein removing the first HGA includes;
cutting the first flexure tail to separate the first bonding region from a remainder of the first flexure tail, including leaving the first bonding region bonded to the FPC, anddetaching the first suspension from the arm; and
installing a replacement HGA on the HSA, the replacement HGA including a replacement suspension and a replacement flexure tail that terminates in a second bonding region, wherein installing the replacement HGA includes;
attaching the replacement suspension to the arm,overlaying the second bonding region on top of the first bonding region, andbonding the second bonding region to the first bonding region.
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Accused Products
Abstract
A method for head stack assembly (HSA) rework is disclosed. A first head gimbal assembly (HGA) includes a first suspension attached to an arm of the HSA, and a first flexure tail that terminates in a first bonding region that is bonded to a flexible printed circuit (FPC) of the HSA. The first HGA is removed by cutting the first bonding region from a remainder of the first flexure tail and detaching the first suspension from the arm. The first bonding region of the first flexure tail is left bonded to the FPC. A replacement HGA includes a replacement suspension and a replacement flexure tail that terminates in a second bonding region. The replacement HGA is installed on the HSA by attaching the replacement suspension to the arm, overlaying the second bonding region on the first bonding region, and bonding the second bonding region to the first bonding region.
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Citations
20 Claims
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1. A method for head stack assembly (HSA) rework, comprising:
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removing a first head gimbal assembly (HGA) from the HSA, the first HGA including a first suspension that is attached to an arm of the HSA, the first HGA also including a first flexure tail that terminates in a first bonding region that is bonded to a flexible printed circuit (FPC) of the HSA, wherein removing the first HGA includes; cutting the first flexure tail to separate the first bonding region from a remainder of the first flexure tail, including leaving the first bonding region bonded to the FPC, and detaching the first suspension from the arm; and installing a replacement HGA on the HSA, the replacement HGA including a replacement suspension and a replacement flexure tail that terminates in a second bonding region, wherein installing the replacement HGA includes; attaching the replacement suspension to the arm, overlaying the second bonding region on top of the first bonding region, and bonding the second bonding region to the first bonding region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method to manufacture a head stack assembly, the method comprising:
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providing an actuator including an arm and a flexible printed circuit (FPC) including a plurality of FPC bond pads; providing a first head gimbal assembly (HGA) that includes a first suspension, a first read head, and a first flexure tail including a first bonding region, the first bonding region including a first plurality of flexure tail conductive bond pads; attaching the first suspension to the arm; bonding each of the first plurality of flexure tail conductive bond pads to a corresponding one of the plurality of FPC bond pads; testing the HSA; cutting the first flexure tail to separate the first bonding region from a remainder of the first flexure tail, including leaving the first plurality of flexure tail conductive bond pads bonded to the corresponding plurality of FPC bond pads; detaching the first suspension from the arm; installing a replacement HGA on the HSA, the replacement HGA including a replacement suspension and a replacement flexure tail that terminates in a second bonding region, the second bonding region including a second plurality of flexure tail conductive bond pads, wherein installing the replacement HGA includes; attaching the replacement suspension to the arm, overlaying the second bonding region on top of the first bonding region, and bonding each of the second plurality of flexure tail conductive bond pads to a corresponding one of the first plurality of flexure tail conductive bond pads. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification