W D 1 2 IBM

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.
Native| Translation
------+-----+-----+-----
Form 5.25"/FH Cylinders 306| | |
Capacity form/unform 10/ 12 MB Heads 4| | |
Seek time / track 99.9/ ms Sector/track 17| | |
Controller MFM / ST506 Precompensation 296
Cache/Buffer KB Landing Zone
Data transfer rate 0.625 MB/S int Bytes/Sector 512
0.625 MB/S ext
Recording method MFM operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C |
Power: sleep W Humidity % |
standby W Altitude km |
idle W Shock g |
seek W Rotation RPM
read/write W Acoustic dBA
spin-up W ECC Bit
MTBF h
Warranty Month
Lift/Lock/Park NO Certificates
**********************************************************************
L A Y O U T
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IBM WD-12/WD-25 PRODUCT DESCRIPTION
+---------------------------------------------------------+
| |XX
| |XX J2
| |XX
| |XX
| Terminator +--------+ | 1
| Resistor +--------+ |
| |
| S5-+|XX
| | ||XX
| 1-+|XX J1
| |XX
| |XX
| |XX
| |XX
| | 1
| |XX1 J3
| |XX Power
+---------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
IBM WD-12/WD-25 PRODUCT DESCRIPTION
Jumper Setting
==============
S5 Drive Select
----------------
+----------+--------------------------------+
| Drive | Switches |
| Select | 4 | 3 | 2 | 1 |
+----------+-------+-------+-------+--------+
| 1 | OPEN | OPEN | OPEN | CLOSED |
| 2 | OPEN | OPEN | CLOSED| OPEN |
| 3 | OPEN | CLOSED| OPEN | OPEN |
| 4 | CLOSED| OPEN | OPEN | OPEN |
+----------+-------+-------+-------+--------+