Sound-devices 722 User Manual download pdf (Page 48)

722 User Guide and Technical Information

v. 2.67 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Drive Replacement

The internal hard drive can be removed and replaced if the drive fails or if a different capacity drive

is needed. The internal hard drive is not a swappable medium. Its multi-pin connector is not rated

for repeated insertion and removal cycles and may be prone to breakage with repeated cycling.

In typical service conditions Sound Devices recommends hard drive replacement every three years.

The hard drive is mounted to the bottom-side of the recorder’s chassis and is screwdriver acces-

sible. The drive is “suspended” in the unit with a shock isolating membrane and is attached to the

main circuit board via a “ﬂex board”. Since the unit’s high-density circuitry and tight construction

require speciﬁc electronics knowledge, Sound Devices strongly recommends drive replacement be

performed by a qualiﬁed technician using proper ESD precautions. Drive replacement done by a

qualiﬁed technician has no warranty implications.

722 with bottom panel

removed showing hard drive

mounting location

The internal hard drive is not intended as a swappable exchange medium. Only qualiﬁed service techni-

cian using proper ESD precautions should perform drive replacement.

Drive Failure

Hard disk drives are mechanical devices and are susceptible to damage from physical shock. One

type of physical shock, called operating shock, occurs when the disk is in operation. During opera-

tion, the drive head is typically over the drive platters reading or writing data. When a physical

shock to the drive occurs during operation, the head and the platters can come into contact causing

both components to be damaged. The second type of shock, called non-operating shock, occurs

when the head is in the unloaded position, or not positioned over the platters. When a physical

shock occurs in the non-operating state, the head can contact the ramp it is positioned over and dam-

age the ability of the head to read and write data to the hard disk drive. All devices with hard drives

are subject to damage from operating and non-operating shock.

The mechanical construction of the 722 is designed to minimize the transmission of shock to the

hard drive. The drive is isolated from the chassis using special shock-reducing closed-cell foam. This

material increases the amount of shock the hard drive can withstand. Additional protection can be

achieved by operating the unit in a carry case.

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Sound-devices 722 User Manual Page 48