Hitachi C4K60 Specifications - Page 20

Mounting HDD, Mounting HDD with screws

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4.2. Mounting HDD 4.2.1. Mounting HDD with screws Caution Mount the HDD with the screws according to the following instruction to optimize the performance. (a) Mount the HDD with M2.0 screws. Take care not to add any distorting force to the HDD when mounting. Using 4 screws holes, secure the HDD. (b) Use screws with the following specifications when the HDD is mounted. i) M2.0 (screw engagement of 2.3mm max.) ii) The torque for fixing the screws is 2.5 0.5kgcm(2.2 0.4 lb. inch) (c) Consider an appropriate cooling to keep the temperature of center of HDD top cover less than 65°C. (d) The inertia of the chassis around the Z-axis of the gravity center of the device must be more than 3 X 10-4 kg m2. Note) In case of general Sub-Notebook PC(Weight: 1.7kg), the inertia of the chassis around the Z-axis of the gravity center of the device is greater than 100 X 10-4 kg m2. Therefore, the required inertia level has no problem with the general electronic equipment. K6610170 Rev.2 Dec 22, 2004 Figure 4.2 Mounting the HDD - 20 -

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K6610170
Rev.2
Dec 22, 2004
- 20 -
4.2.
Mounting HDD
4.2.1.
Mounting HDD with screws
Mount the HDD with the screws according to the following instruction to optimize the
performance.
(a) Mount the HDD with
M2.0 screws. Take care not to add any distorting force to the HDD when mounting.
Using 4 screws holes, secure the HDD.
(b) Use screws with the following specifications when the HDD is mounted.
i)
M2.0 (screw engagement of 2.3mm max.)
ii) The torque for fixing the screws is 2.5
±
0.5kgcm(2.2
±
0.4 lb.
inch)
(c) Consider an appropriate cooling to keep the temperature of center of HDD top cover less than 65
°
C.
(d) The inertia of the chassis around the Z-axis of the gravity center of the device must be more than
3 X 10
-4
kg m
2
.
Note) In case of general Sub-Notebook PC(Weight: 1.7kg), the inertia of the chassis around the Z-axis of
the gravity center of the device is greater than 100 X 10
-4
kg
m
2
. Therefore,
the required inertia level
has no problem with the general electronic equipment.
Figure 4.2 Mounting the HDD
Caution