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2017年5月2日 星期二

NEC D3142 45MB 硬碟機(Hard Disk Drive)拆解(一)

NEC D3142 45MB 硬碟機(Hard Disk Drive)拆解(一):

NEC(日本電氣)D3142 硬碟生產於 1989年,這個硬碟機(Hard Disk Drive)應該是使用在日本 NEC PC-9801 電腦內,因為磁軌壞了,所以棄置,但一直沒有處理,到現在才有時間拆解。

NEC D3142 45MB 硬碟(HDD)
NEC D3142 45MB 硬碟(HDD)的頂部
NEC D3142 45MB 硬碟(HDD)的底部
NEC D3142 45MB 3.5吋 硬碟(HDD / Hard Disk Drive)外殼是標準的 5.25吋軟磁盤的大小尺寸,尺寸是 208 mm × 146mm × 42mm,重量是 951g,但除去外框後,硬碟的實際尺寸是 146mm × 101.6mm × 41mm,重量是 719g,使用 ST412 34-Pin 和 20-Pin 接口,4 Pin 電源接口。

NEC D3142 45MB 硬碟(HDD)的接口
NEC D3142 硬碟 Switch / Jumper 設定:
Jumper
Function
Description
SW1-1~8
Terminating Resistor
Serial configuration-SW1-1 always "off";
if one drive, set SW1-2 thru 8 to "on."
SW1-1-8
Terminating Resistor
If more than one drive, set SW1-2 thru 8 to "off."
Parallel configuration-SW1-1 may be "on" or "off" depending on HDD controller.
SW2-1
Drive Address
"on," all others "off" = addr 1
SW2-2
Drive Address
"on," all others "off" = addr 2
SW2-3
Drive Address
"on," all others "off" = addr 3
SW2-4
Drive Address
"on," all others "off" = addr 4
J1

Connector for control signal interface
J2

Connector for data signal interface
J4

Frame Ground

品牌型號:NEC D3142硬碟(HDD / Hard Disk Drive)
型號:D3142 
Capacity:Formatted: 44.7 MB / Unformatted: 53.4 MB
Disk Size:3.5" / HH (Half Height)
Disks:4
Data Heads:8
Data Surfaces:8
Tracks/Surface:642
Track Density:850 tpi
Bit Density:14,000 bpi
Sectors/Track:17 (RLL = 26 sectors)
Bytes/Sector:512
Record Method:MFM 
Rotational Rate:3,600 RPM
Start/Stop Time:15 seconds typical
Seek Times:Average = 28 ms Track to track = 8 ms Maximum = 54 ms
Latency:Avg 8.33 ms
Interface:ST-506 / ST-412(34-Pin Interface Connector)
Data Transfer:625 KB/sec
Voltage Required:+5V/+12V(4-Pin Power Connector)
Power Dissipation:Ready mode = 9.2 watts
MTTR:30 Minutes
MTBF:30,000 POH
Error Rate:Recoverable =<1 per 10-10th bits
Temperature:Operating = 5° to 50° C
Thermal Grad:10° C/Hr max
Shock:Operating = 2 G (10 ms) Non-operating = 40 G (10 ms)
Vibration:Operating = 0.2 G Non-operating = 0.5 G
尺寸: 146mm × 101.6mm × 41mm
重量: 951g
產地:日本生產(Made in Japan)
上市日期:1989年
參考售價:?

2017年 5月 2日 天氣報告
氣溫:26.8@ 21:40
相對濕度:百分之 89%
天氣:多雲

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