CHAPTER 3 Installation Conditions

CHAPTER 3 Installation Conditions
3.1
Dimensions
3.2
Mounting
3.3
Connections with Host System
This chapter gives the external dimensions, installation conditions, surface
temperature conditions, cable connections, and switch settings of the hard disk
drives.
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Installation Conditions
3.1 Dimensions
Figure 3.1 illustrates the dimensions of the disk drive. All dimensions are in mm.
*1
The PCA and connectors are not included in these dimensions.
*2
Dimension from the center of the user tap to the base of the connector pins
*3
Length of the connector pins
*4
Dimension from the outer edge of the user tap to the center of the connector
pins
*5
Dimension from the outer edge of the user tap to the innermost edge of the
connector pins
Figure 3.1 Dimensions
3-2
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3.2 Mounting
3.2 Mounting
For information on mounting, see the "FUJITSU 2.5-INCH HDD INTEGRATION
GUIDANCE (C141-E144)."
(1) Orientation
The disk drives can be mounted in any direction.
(2) Frame
The MR head bias of the HDD disk enclosure (DE) is zero. The mounting frame
is connected to Signal Ground (SG).
Use M3 screw for the mounting screw and the screw length should
satisfy the specification in Figure 3.2.
The tightening torque must be 0.49N•m (5kgf•cm).
When attaching the HDD to the system frame, do not allow the
system frame to touch parts (cover and base) other than parts to
which the HDD is attached.
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Installation Conditions
(3) Limitation of mounting
Note) These dimensions are recommended values; if it is not possible to satisfy
them, contact us.
2.5
Bottom surface mounting
2.5
DE
2
Side surface
mounting
2.5
B
PCA
Frame of system
cabinet
A
Frame of system
cabinet
3.0 or less
Screw
2.5
3.0 or less
Screw
Details of A
Figure 3.2 Mounting frame structure
3-4
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3.2 Mounting
Because of breather hole mounted to the HDD, do not allow this to
close during mounting.
Locating of breather hole is shown as Figure 3.3.
For breather hole of Figure 3.3, at least, do not allow its around φ 3
to block.
Figure 3.3 Location of breather
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Installation Conditions
(4) Ambient temperature
The temperature conditions for a disk drive mounted in a cabinet refer to the
ambient temperature at a point 3 cm from the disk drive. The ambient temperature
must satisfy the temperature conditions described in Section 1.4, and the airflow
must be considered to prevent the DE surface cover temperature from exceeding
60 °C.
Provide air circulation in the cabinet such that the PCA side, in particular, receives
sufficient cooling. To check the cooling efficiency, measure the surface cover
temperatures of the DE. Regardless of the ambient temperature, this surface cover
temperature must meet the standards listed in Table 3.1. Figure 3.4 shows the
temperature measurement point.
1
Figure 3.4 Surface cover temperature measurement points
Table 3.1 Surface temperature measurement points and standard values
3-6
No.
Measurement point
Temperature
1
DE cover
60 °C max
C141-E259
3.2 Mounting
(5) Service area
Figure 3.5 shows how the drive must be accessed (service areas) during and after
installation.
Mounting screw hole
Cable connection
Mounting screw hole
Figure 3.5 Service area
Data corruption: Avoid mounting the disk drive near strong
magnetic sources such as loud speakers. Ensure that the disk drive
is not affected by external magnetic fields.
Damage: Do not press the cover of the disk drive. Pressing it too
hard, the cover and the spindle motor contact, which may cause
damage to the disk drive.
Static: When handling the device, disconnect the body ground
(500 kΩ or greater). Do not touch the printed circuit board, but hold
it by the edges.
(6) Handling cautions
Please keep the following cautions, and handle the HDD under the safety
environment.
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Installation Conditions
-
General notes
ESD mat
Shock absorbing mat
Wrist strap
Use the Wrist strap.
Place the shock absorbing mat on the
operation table, and place ESD mat on it.
Do not hit HDD each other.
Do not stack when carrying.
Do not place HDD vertically
to avoid falling down.
Do not drop.
Figure 3.6 Handling cautions
-
-
Installation
(1)
Please use the driver of a low impact when you use an electric driver.
HDD is occasionally damaged by the impact of the driver.
(2)
Please observe the tightening torque of the screw strictly.
M3 ⋅⋅⋅⋅⋅⋅ 0.49N • m (5 kgf • cm).
Recommended equipments
Contents
ESD
Shock
3-8
Model
Maker
Wrist strap
JX-1200-3056-8
SUMITOMO 3M
ESD mat
SKY-8A (Color Seiden Mat)
Achilles
Low shock driver
SS-6500
HIOS
C141-E259
3.3 Connections with Host System
3.3 Connections with Host System
3.3.1 Device connector
The disk drive has the SATA interface connectors listed below for connecting
external devices. Figure 3.7 shows the locations of these connectors and
terminals.
SATA interface
and power
connectors
PCA
Figure 3.7 Connector locations
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Installation Conditions
3.3.2 Signal segment and power supply segment
Figure 3.8 shows each segment of the SATA interface connector and pin numbers.
View from the
connector side
Power supply
segment
Signal segment
P1 pins in the power S1 pins in the signal
segment
supply segment
View from the
PCA side
Figure 3.8 Power supply pins (CN1)
3.3.3 Connector specifications for host system
The connector of host system for mating with the disk drive must be compliant
with Serial-ATA Revision 2.5 specification. For detail of requirements about
SATA interface connector, refer to the "Serial-ATA Revision 2.5."
The connection reliability per number of insertion/extractions varies
with the condition of the connection with the host system.
Therefore, we recommend that the customer evaluate the connector
on the customer's system and select it from the connectors
complying with the Serial ATA Revision 2.5 specification.
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3.3 Connections with Host System
3.3.4 SATA interface cable connection
The cable that connects the disk drive to the host system must be compliant with
the Serial ATA Revision 2.5 specification.
3.3.5 Note about SATA interface cable connection
Take note of the following precaution about plugging a SATA interface cable into
the SATA interface connector of the disk drive and plugging the connector into a
host receptacle:
When plugging together the disk drive SATA interface connector
and the host receptacle or SATA interface cable connector, do not
apply more than 10 kgf of force in the connection direction once
they are snugly and securely in position.
Removing the cable without releasing the SATA interface Latch
may lead to connector damage and the loss of the Latch function.
Accordingly, be sure to remove the cable while releasing the Latch.
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CHAPTER 4 Theory of Device Operation
4.1
Outline
4.2
Subassemblies
4.3
Circuit Configuration
4.4
Power-on Sequence
4.5
Self-calibration
4.6
Read/write Circuit
4.7
Servo Control
This chapter explains basic design concepts of the disk drive. Also, this chapter
explains subassemblies of the disk drive, each sequence, servo control, and
electrical circuit blocks.
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4-1
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