JPH01146394U - - Google Patents
Info
- Publication number
- JPH01146394U JPH01146394U JP4156688U JP4156688U JPH01146394U JP H01146394 U JPH01146394 U JP H01146394U JP 4156688 U JP4156688 U JP 4156688U JP 4156688 U JP4156688 U JP 4156688U JP H01146394 U JPH01146394 U JP H01146394U
- Authority
- JP
- Japan
- Prior art keywords
- disk assembly
- head disk
- management information
- head
- nonvolatile ram
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
第１図は本考案の磁気デイスク装置のヘツドデ
イスクアツセンブリの一実施例の構成を示す図、
第２図ａは第１図中の印刷配線板２の平面図、ｂ
は同側面図、第３図は本実施例を利用してＨＤＡ
の機能検査を自動化した一例のブロツク図である
。
１……ヘツドデイスクアツセンブリ、２……印
刷配線板、３……ＨＤＡ管理情報記憶用不揮発性
ＲＡＭ、４……信号線、５……テスタ選択回路、
６……履歴管理回路、７……テスタ群、７１〜７
４……テスタ、２１……ＨＤＡ管理情報信号、２
２……テスタ選択信号。
FIG. 1 is a diagram showing the configuration of an embodiment of a head disk assembly of a magnetic disk device of the present invention;
Figure 2a is a plan view of the printed wiring board 2 in Figure 1, b
is the same side view, and Figure 3 is the HDA using this embodiment.
FIG. 3 is a block diagram of an example of automating the functional test of the device. 1...Head disk assembly, 2...Printed wiring board, 3...Nonvolatile RAM for storing HDA management information, 4...Signal line, 5...Tester selection circuit,
6... History management circuit, 7... Tester group, 7 1 to 7
4 ...Tester, 21...HDA management information signal, 2
2...Tester selection signal.
Claims (1)
リにおいて、ヘツドデイスクアツセンブリの型式
と、前記型式別に個別に存在する履歴コードと、
前記ヘツドデイスクアツセンブリの製造年月日と
、前記ヘツドデイスクアツセンブリのスピンドル
モータが駆動していた積算時間とをヘツドデイス
クアツセンブリ管理情報として前記ヘツドデイス
クアツセンブリ内に設置し前記ヘツドデイスクア
ツセンブリ管理情報を書き込む不揮発性ＲＡＭと
、前記積算時間を測定する手段と、前記不揮発性
ＲＡＭに書き込む手段と、前記不揮発性ＲＡＭに
書き込まれた前記ヘツドデイスクアツセンブリ管
理情報をヘツドデイスクアツセンブリ外部に送出
する信号線とを有することを特徴とする磁気デイ
スク装置のヘツドデイスクアツセンブリ。 In a head disk assembly of a magnetic disk device, a type of the head disk assembly, a history code that exists individually for each type,
The manufacturing date of the head disk assembly and the accumulated time that the spindle motor of the head disk assembly was driven are installed in the head disk assembly as head disk assembly management information, and the head disk assembly is installed as head disk assembly management information. a nonvolatile RAM into which management information is written; a means for measuring the cumulative time; a means for writing into the nonvolatile RAM; and sending the head disk assembly management information written in the nonvolatile RAM to the outside of the head disk assembly. 1. A head disk assembly for a magnetic disk device, characterized in that it has a signal line for a magnetic disk drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4156688U JPH01146394U (en) | 1988-03-29 | 1988-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4156688U JPH01146394U (en) | 1988-03-29 | 1988-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01146394U true JPH01146394U (en) | 1989-10-09 |
Family
ID=31268003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4156688U Pending JPH01146394U (en) | 1988-03-29 | 1988-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01146394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05274771A (en) * | 1992-03-30 | 1993-10-22 | Fujitsu Ltd | Control method for magnetic disk device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5682922A (en) * | 1979-12-10 | 1981-07-07 | Fujitsu Ltd | Information control system |
| JPS57162156A (en) * | 1981-03-27 | 1982-10-05 | Fujitsu Ltd | Recording system for career of storage medium for storage device |
-
1988
- 1988-03-29 JP JP4156688U patent/JPH01146394U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5682922A (en) * | 1979-12-10 | 1981-07-07 | Fujitsu Ltd | Information control system |
| JPS57162156A (en) * | 1981-03-27 | 1982-10-05 | Fujitsu Ltd | Recording system for career of storage medium for storage device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05274771A (en) * | 1992-03-30 | 1993-10-22 | Fujitsu Ltd | Control method for magnetic disk device |
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