M 2 0 0 6 MINISCRIBE NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/FH Cylinders 306| | | Capacity form/unform 5/ 6 MB Heads 2| | | Seek time / track 93.0/ ms Sector/track 17| | | Controller MFM / ST412 Precompensation 128 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 4 46 | -40 57 Power: sleep W Humidity % 8 80 | 8 80 standby W Altitude km | idle W Shock g | seek 23.0 W Rotation RPM 3600 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 8000 Warranty Month Lift/Lock/Park NO Certificates ********************************************************************** L A Y O U T ********************************************************************** MINISC. 2006/2012/4010/4020 PRODUCT MANUAL P/N 1000 REV. B +---------------------------------------------------------+ | |XX Power | |XX J3 | | | |XX | |XX | |XX J2 | Shunt--+ Terminator-+ |XX | | | | | | 2 | | | | | | | | | | | | | +--1 +-1 |XX | |XX J1 | |XX | |XX | |XX | |XX | |XX2 +---------------------------------------------------------+\J4 ********************************************************************** J U M P E R S ********************************************************************** MINISC. 2006/2012/4010/4020 PRODUCT MANUAL P/N 1000 REV. B Jumper setting ============== Customer optional features are implemented via a shunt block on the Printed Circuit Card. SHUNT BLOCK +----------+ | 1 16 | Radial | 2 15 | | 3 14 | Factory Set | 4 13 | Factory Set | 5 12 | Drive Select 4 | 6 11 | Drive Select 3 | 7 10 | Drive Select 2 | 8 9 | Drive Select 1 +----------+ Drive Select ------------ As shipped, the 16-pin shunt block has all pin pairs shorted with the "Radial" option selected. Drive select number Pin Pair 1 2 3 4 --------------------------------------------- 8 - 9 CLOSED OPEN OPEN OPEN 7 - 10 OPEN CLOSED OPEN OPEN 6 - 11 OPEN OPEN CLOSED OPEN 5 - 12 OPEN OPEN OPEN CLOSED 1 - 16 OPEN OPEN OPEN OPEN Radial Option ------------- As shipped, the 16-pin shunt block has pin pair 1/16 shorted result- ing in a radial operation. In this case, all input and output signals are enabled, even if the drive is not selected. However, the front panel LED will not be on. -DRIVE SELECT must be active to light the LED. When pin pair 1/16 is open the drive is in a daisy chain mode where input and output signals are enabled when the appropriatte -DRIVE SELECT line is activated. Drive Exercise Option --------------------- As shipped, the 16-pin shunt block has pin pair 2/15 shorted. This shunt is used to initiate drive exercice routines. The microprocessor performs a series of "wake uo" diagnostics upon application of power. If an error is detected, the processor will flash an warning by blinking the Activity LED. Some errors are fatal in that they do not return to the program until power is cycled. If no errors are detected, the processor test the shunt block to determine the state of pin pair 2/15 (drive exercise option). If pin pair 2/15 is shorted, the drive will become ready. During normal operation, the drive will continue to monitor some functions such as soin speed and indicate an error if it occurs. If pin pair 2/15 is open, the drive will enter the exerciser routine. Having checked the stepper motor phasing during diagnostics, the processor will flash the proper phasing via the Activity LED. This code flashing sequence is repeated two times. The drive then does a seek to the shipping zone and turns the LED on solid. The heads will remain at the shipping zone for 5 seconds during which time the drive can be powered down for shipment. At the end of the 5 second period the drive will initiate an actuator exercise routine which does a random seek for approximately 5 days. Track Zero Phasing ------------------ Pin pair 3/14 and 4/13 are set at the factory and should not require changing. They establish information about the track zero sensor and stepper motor phasing relationsship. ********************************************************************** I N S T A L L ********************************************************************** MINISC. 2006/2012/4010/4020 PRODUCT MANUAL P/N 1000 REV. B Installation routines ===================== Mounting -------- The drive should be mounted to the customer frame through the mechanically isolated mounting points on the bottom or sides of the drive using 6-32 machine screws, 1/4 inch maximum penetration. The customer should allow adequate ventilation to the drive to insure reliable drive operation over the operating temperature range. Mechanically isolated mounting points ------------------------------------- Four side mounting and four base mounting points are provided to the customer. Each mounting point is mechanically isolated from the drive. Cabling ------- Arrach interface cables with connectors P1, P2, P3 and P4 to to J1, J2, J3 and J4 respectively. If multiple drives are to be inter- connected, remove the terminator packs in all but the last drive of the daisy chain. Terminators ----------- Each drive is shipped with a terminator pack providing the 220/330 ohm termination for the Controller Input Signals. If multiple drives are configured in a daisy chain configuration, the terminator pack must be removed from all drives except the last unit on the daisy chain. J1/P1 Control Signal Connector ------------------------------ Connection to J1 is through a 34 pin PCB edge connector. The pins are numbered 1 through 34 with the even pins located on the component side of the Printed Circuit Card. A key slot is provided between pins 4 and 6. The recommended mating connector (P1) is AMP Ribbon Connector P/N 88373-3. J2/P2 Data Signals Connector ---------------------------- Connection to J2 is through a 20 pin edge connector. The pins are numbered 1 through 20 with the even pins located on the component side of the Printed Circuit Card. A key slot is provided between pins 4 and 6. The recommended mating connector (P2) is AMP Ribbon Connector P/N 88373-6. P3 DC Power Connector --------------------- DC power connector (J3) is a 4 pin AMP Mate-N-Lok Connector P/N 350211-1 mounted in a cable extended 4 inches from the drive. The recommended mating connector (P3) is AMP P/N 1-480424-0 utilizing AMP pins P/N 350078-4. +------------+ | 4 3 2 1 | +------------+ J4/P4 Frame Ground Connector ---------------------------- Fasten AMP P/N 61761-2. Recommended mating connector is AMP P/N 62187-1. If used, the hole in J4 will accommodate a wire size of 18 AWG max. Electrical Interface -------------------- The interface to any MiniScribe II and IV can be divided into three categories each of which is physically separated: Control Signals, Data Signals and DC Power. All control Signals are digital in nature (open collector TTL), and either provide signals to the drive (input) or signals to the collector (output). The Data Signals are differential in nature and provide data either to (write) or from (read) the drive. The interconnect cable between the drive and controller may be flat ribbon or twisted pairs of a length not to exceed 20 feet. The signal return lines and ground lines for J1 and J2 should be grounded at the controller. The voltage return lines of J3 should only be grounded at the power supply. Connector J4/P4 is a spade lug connector tied to frame ground. For optimum immunity to electro-magnetic interference and electro- static discharge, the spade lug connector should not be tied to system ground. ********************************************************************** F E A T U R E S ********************************************************************** MINISC. 2006/2012/4010/4020 PRODUCT MANUAL P/N 1000 REV. B Introduction ------------ The Miniscribe II and IV are random access 5 1/4 inch rigid media disk drives employing Winchester technology. All models utilize rack-and-pinion actuators, microprocessor control, and open loop stepper head positioning. Unformatted capacity ranges from 6.4 MBytes to 20 MBytes, depending on the number of heads, disks, and tracks per inch. All models feature power up diagnostics, head shipping zone, buffered seek, and 5 MBit transfer rate. DC voltages and physical form factor are the same as the 5-1/4 inch floppy drives. Seek time --------- |MiniScribe II |MiniScribe IV ----------------------------+--------------+-------------- Single Track | 3 ms | 3 ms Average* | 93 ms | 133 ms Maximum* | 229 ms | 349 ms Average Latency | 8.33 ms | 8.33 ms ----------------------------+--------------+-------------- *Buffered including settling time Reliability and Maintenance --------------------------- MTBF 8,000 hours (continuous operation) MTBF (Typical Usage) 10,000 hours MTTR 30 minutes Preventive Maintenance None required Component Design Life 5 years Media Defects Criteria ---------------------- Media defects as shipped from MiniScribe: Model 2006 and 4010 10 defects maximum <2 bytes in length Model 2012 and 4020 20 defects maximum <2 bytes in length Cylinder 000 defect free. Drive Mechanism --------------- A brushless DC direct drive motor rotates the spindle a 3600 rpm. The motor/spindle assembly is dynamically balanced to provide minimal mechanical runout to the disks. A dynamic brake is used to provide a fast stop to the spindle motor when power is removed. Air Filtration System --------------------- Within the sealed enclosure, a 0.3 micron filter coupled with a breather filter provides over the drive life a clean, equalized above atmoshperic pressure environment to the heads and disks. Head Positioning Mechanism -------------------------- Two or four read/write heads are supported by a carriage mechanism coupled to the stepper motor through a rack-and-pinion motion translator. The rack-and-pinion translator allows for the increased number of data tracks while retaining the full step holding torque and positioning repeatability characteristics of the stepper motor. Track 000 Detector ------------------- The Track Zero Detector resides within the sealed enclosure. This optical sensor consist of a light source (activated only when a seek is initiated) and a receiver which when blocked by the positioner assembly indicates the logical/physical track 000.