HP ProDesk 400 G7 SFF, Руководство по техническому обслуживанию и ремонту

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● Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid
touching the connector.
●
Do not use excessive force when inserting a drive.
● Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such
as monitors or speakers.
Lithium coin cell battery
The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of
approximately three years.
See the appropriate removal and replacement chapter for the chassis that you are working on for instructions on
the replacement procedures.
WARNING! This computer contains a lithium battery. There is a risk of fire and chemical burn if the battery is
handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose of in water or fire, or
expose it to temperatures higher than 140°F (60°C). Do not attempt to recharge the battery.
NOTE: Do not dispose of batteries, battery packs, and accumulators with general household waste. To forward
them to recycling centers or proper disposal, use the public collection system or return them to HP, their
authorized partners, or their agents.
SATA hard drives
The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers have
built-in drive failure prediction that warns the user or network administrator of an impending failure or crash of
the hard drive.
The SMART drive tracks fault prediction and failure indication parameters such as reallocated sector count, spin
retry count, and calibration retry count. If the drive determines that a failure is imminent, it generates a fault
alert.
Table 3-3 SATA hard drive characteristics
Serial ATA hard drive characteristics
Number of pins/conductors in data cable 7/7
Number of pins in power cable 15
Maximum data cable length 100 cm (39.37 in)
Data interface voltage differential 400 mV–700 mV
Drive voltages 3.3 V, 5 V, 12 V
Jumpers for configuring drive N/A
Data transfer rate 6.0 Gbps
Always use an HP-approved SATA 6.0 Gbps cable because it is fully backwards compatible with the SATA 1.5
Gbps drives. Current HP desktop products ship with SATA 6.0 Gbps hard drives.
SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and never bend it
tighter than a 30 mm (1.18 in) radius.
ENWW SATA hard drives 19