D 3 1 2 6 NEC NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 3.5"/HH Cylinders 615| | | Capacity form/unform 20/ 25 MB Heads 4| | | Seek time / track 85.0/18.0 ms Sector/track 17| | | Controller MFM / ST506 Precompensation 128 Cache/Buffer KB Landing Zone 664 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 5 50 | -40 60 Power: sleep W Humidity % 8 80 | standby W Altitude km 3.000| -0.300 3.600 idle W Shock g 5 | 40 seek W Rotation RPM 3564 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 20000 Warranty Month Lift/Lock/Park NO Certificates FCC ********************************************************************** L A Y O U T ********************************************************************** NEC D3126 PRODUCT DESCRIPTION REV. 1 806-520467 11/1986 +---------------------------------------------------------+ | |XX | |XX | |XX | |XX J2 | +-+Drive |XX | | |Address| | +-+ |XX | +-+Terminator |XX | PWB | |Resistor |XX J1 | | |ON/OFF |XX | | | |XX | +-+ |XX | |XX | |XX | +-+ | | +-+SG-FG XXXXXXPower +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** NEC D3126 PRODUCT DESCRIPTION REV. 1 11/86 806-520467 Jumper Settings =============== Drive Address ------------- +---------+ | x . . . | ON | . x x x | OFF DS-1-2-3-4-+ +-+-+-+ | +-------- Drive Select (set only one bit to ON) The -Drive Select 1,2,3,4 signals are control signals used for logical connection between the disk controller and the disk drive to be accessed. With any one of the -DRIVE SELECT signals set to be "true", the interface signal of connector J1 on the disk drive that has been given the same number by the drive address switch is effective. At the time of shipment the drive address is preset to allow selection only when -DRIVE SELECT 1 is "true". If only one disk drive is connected, -DRIVE SELECT 1 can be used without change. If two or more disk drives are connected to a disk controller, change the drive address. +--------------+------+------+------+------+ |Drive Address | DS1 | DS2 | DS3 | DS4 | +--------------+------+------+------+------+ | 1 | ON | OFF | OFF | OFF | +--------------+------+------+------+------+ | 2 | OFF | ON | OFF | OFF | +--------------+------+------+------+------+ | 3 | OFF | OFF | ON | OFF | +--------------+------+------+------+------+ | 4 | OFF | OFF | OFF | ON | +--------------+------+------+------+------+ The front-panel LED illuminates when the disk drive is selected by the corresponding -DRIVE SELECT signal and is in the READY state. This disk drive allows functional change of control signal (connector J1 signal) to the Radial system. Changing to the Radial system is available by setting the terminator resistor ON/OFF switch contact "1" to ON. In this condition all input and output signals are effective independently of thge -DRIVE SELECT signal. There is no change in the turn-on conditions of the front-panel LED. SW1 Terminator Res. +-----------------+ | . x x x x x x x |ON | x . . . . . . . |OFF Terminator ON, means active +-R---------------+ +------------------ Radial Bit, always set to OFF! Only the last drive on the cable must be terminated. J1 Connector for control signal interface J2 Connector for data signal interface Ground Interface Physical Specification --------------------------------------- At the time of shipment, Frame (FG) is connected to signal Ground (SG) by the SG-FG Jumper on the PWA. If the isolation between them is required, remove SG-FG Jumper. ********************************************************************** I N S T A L L ********************************************************************** NEC D3126 PRODUCT DESCRIPTION 806-520467 11/86 REV. 1 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! Never install PC board on the Top! There are eight screw holes for #6-32 UNC screws. Terminator ---------- Disk Controller land far-end D3126 requires Terminator. Radial Type ----------- +-------------------------------------------------+----------+ | |Data | | DISK CONTROLLER |Separator | | | | +-+--------------+-------------+-------------+----+-+-+-+-+--+ | +--------+-------------+-------------+------+ | | | | | | +------+-------------+--------+ | | | | | | | +------+----------+ | | | | | | | | +-----+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-+-----+---+ +-+------+-+ +-+------+-+ +-+------+-+ |J1 J2 | |J1 J2| |J1 J2| |J1 J2| | | | | | | | | | D3126 | | D3126 | | D3126 | | D3126 | +----+------+ +----+-----+ +----+-----+ +----+-----+ *--------------*-------------*-------------+ DC POWER Each cable must be less than 6 m (20 feet)! Daisy Chain Type ---------------- +-------------------------------------------------+----------+ | |Data | | DISK CONTROLLER |Separator | | | | +-+-----------------------------------------------+-+-+-+-+--+ | +-------------------------------------------+ | | | | | +-----------------------------+ | | | | | +-----------------+ | | | | | +-----+ | | | | | *-----+--------*------+------*------+------+ | | | | | | | | | | | | | | | | | +-+-----+---+ +-+------+-+ +-+------+-+ +-+------+-+ |J1 J2 | |J1 J2| |J1 J2| |J1 J2| | | | | | | | | | D3126 | | D3126 | | D3126 | | D3126 | +----+------+ +----+-----+ +----+-----+ +----+-----+ *--------------*-------------*-------------+ DC POWER Each cable must be less than 6m (20 feet)! Terminator resistor switch contact "2" "8" of far-end drive must be ON, and any other drives must be OFF. Switch contact "1" is prepared for radial connection. Interface Cable Connector ------------------------- J1 34 Pin AMP ribbon connector P/N 88373-3 J2 20 Pin AMP ribbon connector P/N 88373-6 J3 Power AMP Mate-N-Lock P/N 350211-1 Mate AMP Mate-N-Lock P/N 1-480424-0 Power ----- +-----J3-----+ pin 1 +12 VDC | 1 2 3 4 | pin 2 +12 Volts Return +------------+ pin 3 + 5 Volts Return pin 4 + 5 VDC ********************************************************************** F E A T U R E S ********************************************************************** NEC D3126 PRODUCT DESCRIPTION 806-520467 REV. 1 11/86 Installation Procedure ---------------------- Set the correct setup type and perform a low level format, in the most cases can the media defect list be entered in this step. If you cannot find a correct Setup Type use either a lower cylinder count or special disk installation programms like DISK MANAGER from ONTRACK or SPEEDSTOR from STORAGE DIMENSIONS. Run under DOS FDISK and DOS FORMAT, the drive becomes bootable with the command: FORMAT C:/s. General Outline and Features ---------------------------- The D3126 magnetic Winchester disk drive is a random acces storage device with 3.75" media and mini-Winchester type magnetic heads. The formatted storage capacity is 20MB. Media Defects ------------- The D3126 magnetic disk drive is checked for presense of media defects before shipped from the factory. Maximum defects allowed are 48 locations per drive, and cylinder 0 is error free. Media defects are indicated by the presence of a "1" bit in bit position 7 of the HD byte in the ID field.