D K 3 1 5 C - 1 0 HITACHI NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 3.5"/HH Cylinders 2469| | | Capacity form/unform 1005/ MB Heads 11| | | Seek time / track 11.8/ 2.0 ms Sector/track | | | Controller SCSI2 SI/FAST Precompensation Cache/Buffer 448 KB LOOK-AHEAD Landing Zone Data transfer rate 3.800 MB/S int Bytes/Sector 512 10.000 MB/S ext SYNC Recording method RLL 1/7 operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 10 50 | -20 60 Power: sleep W Humidity % 8 80 | 8 90 standby W Altitude km | idle W Shock g 3 | 40 seek W Rotation RPM 4500 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 400000 Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** L A Y O U T ********************************************************************** HITACHI DK315C CONCISE MANUAL REV 5/5.93 K2500491 +---------------------------------------------------------+ |+-------+ 8+-+7 |XX || | JP3 | | |XX || | 2+-+1 |XX I || | |XX N || | 15 1 |XX T |+-------+ +++++++++JP2 |XX E |+-+ +++++++++ |XX R J1 |+-+ 16 2 |XX F |+-+ |XX A || | |XX C || | |XX E || |J3 |XX || | COMPONENT SIDE |X1 |+-+ |XX J3 | |XX Power +---------------------------------------------------------+ +---------------------------------------------------------+ | 7----+ |XX J1 | +----2 |XX | J6 |XX I | OTHER SIDE |XX N | |XX T | |XX E | |XX R | |XX F | |XX A | |XX C | |XX E | |XX | J7 |X1 | +----1 |XX J3 | 8----+ |XX Power +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** HITACHI DK315C CONSISE MANUAL REV 5/5.93 K2500491 Jumper Setting ============== x = Default setting The following jumpers are accessible to the user Jumper Pins SCSI ID setting jumper J6 1 6 SCSI bus parity jumper JP2 7 8 Terminator power on/off jumper JP3 1 4 Terminator Enable/Disable JP3 5 6 MOTOR START/STOP setting jumper JP2 5 6 SPINDLE Synchronize JP2 1 4 and JP3 7 8 Note: The DK315C jumpers other than listed above are installed by the manufacturer and must not be removed or replaced by the user. Never remove any of the BLACK factory set jumpers. These jumpers are unique to each drive. All jumpers should be set with power off. By using a extension cable from J6 connector, SCSI ID Setting and LED are externally available. J6 SCSI ID ------------ +----------+-----------------------+ | SCSI ID | 5-6 3-4 1-2 | | | ID2 | ID1 | ID0 | +----------+-------+-------+-------+ | 0 | OPEN | OPEN | OPEN | +----------+-------+-------+-------+ | 1 | OPEN | OPEN | CLOSED| +----------+-------+-------+-------+ | 2 | OPEN | CLOSED| OPEN | +----------+-------+-------+-------+ | 3 | OPEN | CLOSED| CLOSED| +----------+-------+-------+-------+ | 4 | CLOSED| OPEN | OPEN | +----------+-------+-------+-------+ | 5 | CLOSED| OPEN | CLOSED| +----------+-------+-------+-------+ | 6 | CLOSED| CLOSED| OPEN | +----------+-------+-------+-------+ | x 7 | CLOSED| CLOSED| CLOSED| +----------+-------+-------+-------+ JP2 Motor Start/Stop --------------------- Pins 5-6 x CLOSED Spindle motor start up at the power on OPEN Spindle motor start up units the SCSI "start/stop unit Command" JP2 7-8 SCSI bus parity ------------------------ x 7-8 OPEN Enables SCSI bus parity (default) CLOSED Disables SCSI bus parity JP3 Terminator Power on/off ---------------------------- Pins 3-4 CLOSED +5V source for terminator is supplied only from the SCSI bus (host) Pins 1-2 x CLOSED +5V source for terminator is supplied only from the drive controller. JP3 Terminator Enable/Disable ------------------------------ Pins 5-6 OPEN Disable the terminator CLOSED Enable the terminator (terminate the SCSI bus) Note: Only the ends of the SCSI bus must be terminated. All other drive between the ends must have terminator disabled. Terminator power must either be supplied by the (HOST) or the drive controller. J3 DC Power and pin connector assignments ------------------------------------------- +--------------+ |+-----J3-----+| pin 1 +12 VDC || 4 3 2 1 || pin 2 +12 Volts Return GND |+------------+| pin 3 + 5 Volts Return GND +--------------+ pin 4 + 5 VDC (shown on the drive side) ********************************************************************** I N S T A L L ********************************************************************** HITACHI DK315C CONSISE MANUAL REV 5/5.93 K2500491 Notes on Installation ===================== Possible Orientations --------------------- 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 It is permissible to install the DK315C horizontally or vertically as above. Mounting -------- Mount the drive with four screws by proberly inserting them through 4 holes in the drive. (Screw's torque: 6 8Kg-cm (2.36 3.15Kg-inch) Clearance not less than 3mm around HDA is required to accommodate any possible vibration of HDA itself. Sequential Activation of Motors ------------------------------- When multiple disk drives are connected and turned on simultaneously, a large amount of current will flow. It is recommended to turn the motors on one by one at an interval of approx. 20 seconds. Indication of "READY" on the last drive reports that all drives have been activated. J6 Connector ------------- Housing, DUPONT P/N 69305-002 (2 pin) 69307-004 (4 pin) 69307-006 (6 pin) 69307-008 (8 pin) 69307-010 (10 pin) 69307-012 (12 pin) Contact Socket, DUPONT P/N 77138-201