Maxtor D540X-4K Product Manual page 51

A single-piece, e-coated, aluminum-alloy base casting provides a mounting surface for A single-piece, e-coated, aluminum-alloy base casting provides a mounting surface for
the drive mechanism and PCB. The base casting also acts as the flange for the DC the drive mechanism and PCB. The base casting also acts as the flange for the DC
motor assembly. To provide a contamination-free environment for the HDA, a gasket motor assembly. To provide a contamination-free environment for the HDA, a gasket
provides a seal between the base casting, and the metal cover that encloses the drive provides a seal between the base casting, and the metal cover that encloses the drive
mechanism. mechanism.
Integral with the base casting, the DC motor assembly is a fixed-shaft, brushless DC Integral with the base casting, the DC motor assembly is a fixed-shaft, brushless DC
spindle motor that drives the counter-clockwise rotation of the disks. spindle motor that drives the counter-clockwise rotation of the disks.
The disk stack assembly in the Maxtor D540X-4K hard disk drives consist of disks The disk stack assembly in the Maxtor D540X-4K hard disk drives consist of disks
secured by a disk clamp. The aluminum-alloy disks have a sputtered thin-film secured by a disk clamp. The aluminum-alloy disks have a sputtered thin-film
magnetic coating. magnetic coating.
A carbon overcoat lubricates the disk surface. This prevents head and media wear due A carbon overcoat lubricates the disk surface. This prevents head and media wear due
to head contact with the disk surface during head takeoff and landing. Head contact to head contact with the disk surface during head takeoff and landing. Head contact
with the disk surface occurs only in the landing zone outside of the data area, when with the disk surface occurs only in the landing zone outside of the data area, when
the disk is not rotating at full speed. The landing zone is located at the inner diameter the disk is not rotating at full speed. The landing zone is located at the inner diameter
of the disk, beyond the last cylinder of the data area. of the disk, beyond the last cylinder of the data area.
% ; . + 0 & ' 4 % ; . + 0 & ' 4
< 1 0 ' < 1 0 '
% 1 0 6 ' 0 6 5 % 1 0 6 ' 0 6 5
System Data System Data
1. For user data, zone 15 is the innermost zone and zone 1 is the outermost zone. 1. For user data, zone 15 is the innermost zone and zone 1 is the outermost zone.
Cylinder Contents Cylinder Contents
6 C D N G   6 C D N G  
0 7 / $ ' 4 1 ( 0 7 / $ ' 4 1 (
1 1
6 4 # % - 5 6 4 # % - 5
15 15 3562 3462
14 14 3680 3680
13 13 3680 3680
12 12 3680 3680
11 11 3680 3680
10 10 3680 3680
9 9 3680 3680
8 8 3680 3680
7 7 3680 3680
6 6 3680 3680
5 5 3680 3680
4 4 3680 3680
3 3 3680 3680
2 2 3680 3680
1 1 3680 3680
0 0 60 60
Maxtor D540X-4K 20.4/40.0/60.0/80.0 GB AT
Basic Principles of Operation
5 ' % 6 1 4 5 5 ' % 6 1 4 5 & # 6 # 4 # 6 ' & # 6 # 4 # 6 '
2 ' 4 6 4 # % - 2 ' 4 6 4 # % - / D  5 / D  5
486 487 251.01 243.59
520 525 260.18 269.23
560 560 286.54 280.54
600 600 298.64 291.86
633 628 325.44 315.93
671 666 332.69 346.15
709 700 365.38 348.08
738 742 384.62 372.47
800 771 403.85 389.42
804 805 417.58 408.12
836 836 432.69 423.08
860 857 437.50 445.05
883 900 459.13 452.66
920 907 467.31 472.85
925 950 481.78 481.78
400 400 197.44 269.23
5-3