M 2 2 3 0 A T FUJITSU NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/HH Cylinders 320| | | Capacity form/unform 5/ 7 MB Heads 2| | | Seek time / track 95.0/18.0 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 | 3 seek W Rotation RPM 3600 read/write 27.0 W Acoustic dBA 45 spin-up W ECC Bit MTBF h 10000 Warranty Month Lift/Lock/Park NO Certificates ********************************************************************** L A Y O U T ********************************************************************** FUJITSU M2230AT/M2233AT OEM MANUAL B03P-4695-0023A +------------------------------------------------------+ | |xx B cable | |xx card | |xx edge | |xx | |xx | +------+ | | | SW1 | |xx | +-------+ +------+ |xx | | SW2 | |xx A cable | +-------+ |xx card | |xx edge | |xx | |xx | |xx | | | |XX Power | |XX +------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** FUJITSU M2230AT/M2233AT OEM MANUAL B03P-4695-0023A 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" Input Control signal termination -------------------------------- Input control signals onto the A cable of the interface are terminated by setting switch 4. All keys of SW4 on the last drive are to be turned ON while the other drive's SW4 must be turned OFF in a daisy chain connection. ********************************************************************** I N S T A L L ********************************************************************** FUJITSU M2230AT/M2233AT OEM MANUAL B03P-4695-0023A 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 as figure above. In this case, installation horizontal rate shall be within 20 degrees. However, when inclines as the disk side comes lower side installation horizontal rate shall be within 5 degrees. Never install PCA on the Top !!! Ambient temperature ------------------- The operating temperature range of the drive is specified at a dis- tance of 3 cm from the drive. Multiple units connection -------------------------- +-------------+ A cable +--------------+ | +----------*---+ Drive 1 | | +----------+---+ | | | B cable | +--------------+ | | *---+ Drive 2 | | +----------+---+ | | Controller | B cable | +--------------+ | | *---+ Drive 3 | | +----------+---+ | | | B cable | +--------------+ | | +---XX Terminator | | +--------------+ Drive 4 | | | B cable +--------------+ | | +-------------+ Connection of units to its controller is shown in that Fiugre. 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 AC line noise ------------- 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 M2230AT/M2233AT OEM MANUAL B03P-4695-0023A Media error ----------- Cylinder 0, Head 0 and 1 are defect free. The number of defect in the M223XAT are as follows: M2230AT ..... max. 6 M2233AT ..... max. 12 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 M223XAT is designed for a MTTR of 30 minutes or less. Service life ------------ Overhaul of the M223XAT 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.