M 2 2 3 4 A S FUJITSU NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/FH Cylinders 320| | | Capacity form/unform 16/ 20 MB Heads 6| | | Seek time / track 83.0/18.0 ms Sector/track 32| | | Controller MFM / ST412 Precompensation 128 Cache/Buffer KB Landing Zone 319 Data transfer rate 0.625 MB/S int Bytes/Sector 256 0.625 MB/S ext Recording method MFM operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 5 45 | -40 60 Power: sleep W Humidity % 20 80 | 5 95 standby W Altitude km 3.000| 12.000 idle W Shock g 2 | 30 seek W Rotation RPM 3600 read/write 27.0 W Acoustic dBA 40 spin-up W ECC Bit MTBF h 10000 Warranty Month Lift/Lock/Park NO Certificates ********************************************************************** L A Y O U T ********************************************************************** FUJITSU M2230-/M2233-/M2234-/M2235-AS OEM MANUAL B03P-4695-0015A..0 +------------------------------------------------------+ | |xx B cable | |xx card | |xx edge | |xx | |xx | +------+ |xx | | SW1 | |xx | +------+ | | |xx A cable | |xx card | |xx edge | |xx | |xx | |xx | | | |XX Power | |XX +------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** FUJITSU M2230-/M2233-/M2234-/M2235-AS OEM MANUAL B03P-4695-0015A..03 Jumper Settings =============== Drive Selected Signal --------------------- Control of DRIVE SELECTED Signal .... Key 1 in SW1 "ON" side ... A drive is in a selecded state regardless of DRIVE SELECT 1 4, which means DRIVE SELECTED signal is always true ans all Input/Output signals are validated without selecting the drive. "OFF" side .. Drive Selected signal gets true and all Input/Output signals are validated only when a drive is selected with DRIVE SELECT 1 4. Drive Selection --------------- DRIVE SELECTION ..... Key 4 Key 7 in SW1 Key 4 7 in SW1 are used to one logical number up to a maximum of 4 drives. The relevant one of 4 keys is to turned "ON" while the others should be turned "OFF". +----------+---------------+ | Drive |Key No. in SW2 | | Number +---+---+---+---+ | | 7 | 6 | 5 | 4 | +----------+---+---+---+---+ | 1 | o | x | x | x | +----------+---+---+---+---+ | 2 | x | o | x | x | +----------+---+---+---+---+ | 3 | x | x | o | x | +----------+---+---+---+---+ | 4 | x | x | x | o | +----------+---+---+---+---+ o: "ON" x: "OFF" ********************************************************************** I N S T A L L ********************************************************************** FUJITSU M2230-/M2233-/M2234-/M2235-AS OEM MANUAL B03P-4695-0015A..03 Notes on installation ===================== Installation direction ---------------------- horizontally vertically +-----------------+ +--+ +--+ | | | +-----+ +-----+ | | | | | | | | | +-+-----------------+-+ | | | | | | +---------------------+ | | | | | | | | | | | | x x | | | | | | +------x------x-------+ | +-----+ +-----+ | +-+------x--x-------+-+ +--+ +--+ | xx | | x x | +---x--------x----+ x x The unit may be installed in its locker either horizontally or ver- tically, except the horizontal position with the PCB on top. Frame structure --------------- The disk enclosure (Signal ground) is isolated from the drive mounting frame (Frame ground). When mounting the drive in a cabinet frame, the frame should clear the drive by at least 3.5 mm to prevent the drive from touching the cabinet frams. Ambient temperature ------------------- The operating temperature range of the drive is specified at a dis- tance of 3 cm from the drive. Service area ------------ When preparing to ship the drive, the heads should be positioned at the inner most (maximum) cylinder. (The heads will automatically Seek to Track 0 at Power up). Multiple units connection -------------------------- +-------------+ A cable +--------------+ | +----------*---+ Drive 1 | | +----------+---+ | | | B cable | +--------------+ | | *---+ Drive 2 | | +----------+---+ | | Controller | B cable | +--------------+ | | *---+ Drive 3 | | +----------+---+ | | | B cable | +--------------+ | | +---XX Terminator | | +--------------+ Drive 4 | | | +--------------+ | | +-------------+ Connection of units to its controller is shown in that figure. The cable A (control signals) must be connected in series and the B cable (R/W signals) in parallel. The termination of control signal must be performed only at the last drive. The total control cable length in a multi-drive configuration should not exceed 6m. Power cable ----------- +-----------------+ 1 = +12 V | 4 3 2 1 | 2 = +12 V RTN +-----------------+ 3 = + 5 V RTN 4 = + 5 V Noise filter ------------ To eliminate AC line noise, a noise filter of the specifications given below should be incorporated in the AC input terminal of the disk drive power supply. Attenuation characteristic: 40 dB or greater at 10MHz Circuit configuration: T type ********************************************************************** F E A T U R E S ********************************************************************** FUJITSU M2230-/M2233-/M2234-/M2235-AS OEM MANUAL B03P-4695-0015A..03 Media error ----------- Cylinder 0, Head 0 and 1 are defect free. The number of defect in the M223xAS are as follows: M2230 .... max. 6 M2233 .... max. 12 M2234 .... max. 18 M2235 .... max. 24 Mean Time Between Failures (MTBF) --------------------------------- The estimated MTBF of this drive during its life time is 10,000 hours. Mean Time To Repair ------------------- MTTR is the average time taken by well-trained service mechanic to diagnose and repair a unit malfunction. The M223xAS is designed for a MTTR of 30 minutes or less. Service life ------------ Overhaul of the M223xAS is not required for the first five year. Power loss ---------- Integrity of the data on the disk is guranted against all froms of abnormal DC power failure except a power failure during writing. Write Precompensation --------------------- Whenever two bits are written in close proximity to each other, a phenomenon called pulse superposition occurs, which tends to cause the two bits to move away from each other. This is a large factor contributing to bit shift. The effect of bit shift can be reduced by a technique called pre- compensation which, by detecting which bits will occur early and which bits will occur late, can effectivly minimize the shift by writing these bits in the opposite direction of the expected shift. Precompensation should be done at 128 319 cylinders, but may be done at all cylinders. The optimum amount of pre-compenation is 12 nanseconds for both early and late written bits. Start and stop time ------------------- Start time (time from when power is turned on until the unit is ready) is 20 seconds or less and stop time (time to completely stop when power is turned off) is 15 seconds or less using dynamic braking.