8.4.1 Screwing

Four screws should be tightened equally with 0.39 N.m ( 4 kgf.cm ) torque. The depth should be 3.0 mm min. and 3.5 mm maximum.

8.4.2 Installation

①The drive should be mounted carefully on the surface of 0.1mm or less flatness to avoid excessive distortion.

②In order to prevent short-circuit under any circumstances, the space of 0.5mm or more should be kept under the PCB and the design have to be checked carefully (See fig. 2).

③Enough space should be kept around the drive especially around the convex portion of HDA (See fig. 2) to

avoid any contact with other parts, which may be caused by receiving shock or vibration.

④The temperature of the top cover and the base must always be kept under 63℃ to maintain the required reliability. ( If the drive runs continuously or spins-up frequently, the temperature of the top cover may rise to 15℃ maximum. If the drive is used in ambient temperature of 48℃ or more, it should be kept where adequate ventilation is available to keep the temperature of top cover under 63℃)

⑤M3 mounting screw holes are tapped directly on the base for electrical grounding between the drive and the

base. In order to prevent the drive performance from being affected by the system noise, appropriate evaluation should be conducted before deciding loading method.

⑥Be sure not to cover the breathing hole ( See fig. 1) to keep the pressure inside the drive at a certain level.

⑦ Do not apply force exceeding 2[N] on the Top Cover.

⑧ The drive contains several parts which may be easily damaged by ESD(Electric Static Discharge). Avoid touching the interface connector pins and the surface of PCB. Be sure to use ESD proof wrist strap when handling the drive.

⑨ A rattle heard when the drive is moved is not a sign of failure.

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