M 2 9 5 4 E A U / E Y F FUJITSU Native| Translation ------+-----+-----+----- Form 3.5"/SLIMLINE Cylinders 5713| | | Capacity form/unform 4350/ MB Heads 9| | | Seek time / track 11.5/ 2.0 ms Sector/track | | | Controller SCSI3 SI/WI/U/F/SCA2 Precompensation Cache/Buffer 506 KB MULTI-SEGMEN Landing Zone Data transfer rate 9.900 MB/S int Bytes/Sector 512 20.000 MB/S ext SYNC Recording method PR4ML operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 5 50 | -40 60 Power: sleep W Humidity % 20 80 | 5 95 standby W Altitude km 3.000| 12.000 idle W Shock g 5 | 50 seek W Rotation RPM 7200 read/write W Acoustic dBA 34 spin-up 11.5 W ECC Bit ON THE FLY MTBF h 1000000 Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** L A Y O U T ********************************************************************** FUJITSU M2952E/2954E JUMPER SETTING +---------------------------------------------------------+ | |XX | |XXI | |XXN | |XXT | 1----+ |XXE | +----6 CN6 |XXR CN1 | |XXF | |XXA | |XXC | |XXE | |XX | |XX | |XX +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** FUJITSU M2949E/M2952E/2954E JUMPER SETTING Jumper Setting ============== There is no SCSI ID setting terminal for SCA type model. Set the SCSI ID using ID0, ID1, ID2, and ID3 signals on the SCSI interface connector CN1. CN6 Setting connection of the terminating resistor on SCSI interface -------------------------------------------------------------------- CN6 3-4 OPEN Terminator resistor circuit for DB08 to DB15, DBP1 is not connected. CLOSED Terminator resistor circuit for DB08 to DB15, DBP1 is connected. When connecting the terminating resistor, use the spare plug mounted on CN6 1-2. ********************************************************************** I N S T A L L ********************************************************************** FUJITSU M2952/2954 JUMPER SETTING Notes on installation ===================== Installation direction ---------------------- horizontally vertically +-----------------+ +--+ +--+ | | | +-----+ +-----+ | | | | | | | | | +-+-----------------+-+ | | | | | | +---------------------+ | | | | | | | | | | | | | | | | | | +---------------------+ | +-----+ +-----+ | +-+-----------------+-+ +--+ +--+ | | | | +-----------------+ The drive will operate in all axis (6 directions). Inclination from vertical or horizontal should not exceed 5". Mounting screw fixing --------------------- When the mounting screw holes on the side of the drive are used, then only use two pairs of outer holes. Do not use the center hole in conjunction with only one of the outer holes. The screws must not penetrate the drive by more than 4 millimeters. Cooling ------- Allow space above and below the drive to provide for adequate air flow. Fan cooling is recommended. The disk enclosure temperature measured at top center, should never exceed 55*C. Grounding --------- This drive uses MR (Magneto Resistive) Heads. The disk enclosure (DE) must not be connected to ground. The mounting frame is isolated from the DE and this should be connected to ground via the mounting screws. Termination ----------- A terminating resistor should be installed at both ends of the SCSI bus. When shipped from the factory, this drive is terminated. If the drive is to be used in the middle of the SCSI cable with other terminated devices at the ends, or if external termination is to be used, then the terminating resistor on the drive must be disabled. Termination Power ----------------- TMPWR must be supplied to the terminating resistor for correct operation. This can be supplied from either the drive or the SCSI bus. If external termination is to be used then TRMPWR should be supplied to the SCSI bus. Users must ensure that the Disk Enclosure casing is NEVER shorted to the computer system's Frame or DC Ground. Magneto-Resistive Read heads are a significant factor in the achievement of very high capacities in small form factor hard disk drives. The M2952 and M2954 drives use Magneto-Resistive (MR) heads and therefore requires special handling considerations. The MR head must be electrically biased in order to function, and Fujitsu uses +5.5 VDC on thes drives. The voltage is generated by the drive electronics from normal +5VDC and +12VDC rails, so standard power supplies and connectors may be used. With the MR heads biased in this way, it becomes importatnt to avoid the possibility of discharge between the head and the media, so, in order to ensure operational reliability, the disk enclosure (DE) and hence the platters themselves are also biased to +5.5VDC rather than DC Ground as would be the case on a conventional drive. Fujitsu has taken steps to minimise the possibility of accidental shorting by coating the DE with an electrically insulating material and by removing the earthing tag that would normally by present. Also the drive is protected against damage in the event of accidental shorting through the use of a protection circuit in the head IC. This works by quickly shutting off the bias voltage when it detects a voltage drop. Any read or write operation during this time will result in a hard data error. When the short is removed the bias voltage is automatically restored and read/write operations will again work normally. Pay close attention to the mounting specifications of the drive ensuring that no component of the system is likely to abrade the disk enclosure surface.