S T 4 0 2 6 ( 1 9 9 0 ) SEAGATE NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/FH Cylinders 615| | | Capacity form/unform 21/ 25 MB Heads 4| | | Seek time / track 40.0/ 8.0 ms Sector/track 17| | | Controller MFM / ST506 Precompensation 616 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 25.5 W Rotation RPM 3600 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 15000 Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** L A Y O U T ********************************************************************** SEAGATE ST4026 PRODUCT DESCRIPTION 6/26/90 +-------------------------------------------------------+ | |XX Data | |XX J2 20pin | |XX1 | ++1 | | | Drive | ++4 Select | |XX | |XX | |XX J1 34pin | |XX Control | |XX | |XX | Terminator Resistor |XX | Pack +-------+| 1 | +-------1|XX J3 | |XX Power +-------------------------------------------------------+ 1 ********************************************************************** J U M P E R S ********************************************************************** SEAGATE ST4026 PRODUCT DESCRIPTION 6/26/90 Jumper Setting ============== Drive Select ------------ +-------+ |X o o o| Drive 1 is selected |X o o o| +1-2-3-4+ +-------+ |o X o o| Drive 2 is selected |o X o o| +1-2-3-4+ +-------+ |o o X o| NEVER USED!!! (Drive Select 3) |o o X o| +1-2-3-4+ +-------+ |o o o X| NEVER USED!!! (Drive Select 4) |o o o X| +1-2-3-4+ If twisted cable, use Drive Select 2. ********************************************************************** I N S T A L L ********************************************************************** SEAGATE ST4026 PRODUCT DESCRIPTION 6/26/90 Notes on installation ===================== Drive mounting -------------- horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | x | | | | | | | | x+----------------+x +-+-----------------+-+ | | | | | | ||x x|| +---------------------+ | | | | | | || x x || | | | | | | || x x || x x | | | | | | || x x || +------x------x-------+ | +-----+ +-----+ | || xx || +-+------x--x-------+-+ +--+ +--+ || x x || | xx | || x x || | x x | || x x || +---x--------x----+ |x x| x x x++----------------++x UNACCEPTABLE! UNACCEPTABLE! J3 DC Power and pin connector assignments ------------------------------------------- +-----J3-----+ pin 1 +12 VDC | 4 3 2 1 | pin 2 +12 Volts Return +------------+ pin 3 + 5 Volts Return pin 4 + 5 VDC