Philips PCL304 - Page 79

9 DEVICES
9.1 Hard disk drive
9.1.1
PCL304
HDD
assembly
specification
The
PCL304
uses
a
3.5"
42.9MB
19.05mm
(0.75")
hard
disk
drive
type
Conner
CP4034:
Servo
Embedded
Nr.
platters
1
Data
heads
2
Formatted
capacity
42.9MB
Bytes
per
block
512
Blocks
per
drive
83.904
Sectors/rack
39
Bytes/track
19456
track
density
2100
TPI
recording
density
34K
BPI
data
tranfer
rate
to/from
buffer
3.75
MB/sec
tofrom
media
1.25
MB/sec
Recording
method
2of
7
RLL
Average
Seek
time
29ms
Startup
time
(max.)
20
sec.
Average
latency
10.3ms
Rotation
speed
(1%)
2913
RPM
Interleave 1
Buffer size 32K
Supply voltage 5V
Power consumption:
Read/write/seek 2.8W
Standby 0.4 W
Dimensions
0.75"
x
4.00"
x
5.15"
9.1.2 Pin Assignment
(Pino.
|
Signal
|
Pino.
|
—
Signal
|
2
Jeno
[een
[os
spaTA?
[2
oR
[ca
patas
26.
Jeno
[s—feoaras
|
a7.
[RESERVED
es
eDATAg
a8
LE
[7
fpatas
|.
[RESERVED
a
fepaato[
en
[—s.—[eoataa
—[—a1.
hn
[ae
epata
|
2,
Hore
[4a
apata
12]
34
FPpiac
|
[—13.
feat?
|
35.__addRo
[44a
aDaTA
19
|
38.
-aDDR2
|
[15
fepatas
[37
eso
48.
patara
[3a
fost
|
[747
eDaTAo
|
39.
FacTvE
__|
[te
eaTats
|
40.
[eno_
|
99
[enp
at.
as
vebogin
|
p90.
KEY
af
eM)
|
|
GND
|
aa
xa
—__|
9-1
9.1.3 Installing instructions
Hard
disk
units
are
non
repairable
system
components,
this
means
that
in
case
of
failures
the
complete
harddisk
unit
has
to
be
replaced.
The removal and mounting of the drive is described in chap-
ter 5.
Installing
a
new
hard
disk
does
not
require special
actions.
After
changing
the
hard
disk
configuration
run
SET
UP
see
chapter
4.
9.2 Floppy disk drive
9.2.1 FDD assembly specification
The PCL304/00 uses a 3.5” 1.44 MB 0.75" height floppy
disk drive, type Sony MPF-220 with:
(a
[Capacity
(formatted)
[Recordingmode
[Recording
density
|
Data
transfer
rate
| Singal track seek time
| Average access time 100 ms
[Rotation speed 300 r.p.m
| Number of tracks 160
| Number of cylinders 80
[Numberofheads | 2)
[Trackdensity
—s«|
«35
TPL
[Dimension (inch) | 4(W)x0.75(H)x5.1(D)__|
STEP
| 6 {ps1
| 7 «(ps2
MOTOR ON
9.2.3 Installing instructions
Like
thwe
hard
disk
unit,
floppy
drives
are
also
considered
as
anon
repairable
system
component.
In
case
of
failures
the
complete
floppy
drive
has
to
be
re-
placed.
The
removal
and
mounting
of
the
floppy
drive
is
described
in chapter 5.
Installing
a
new
floppy
drive
does
not
require
s
pecial
actions.
After
changing
the
floppy
disk
configuration
run
SET
UP
see
chapter
4.
CS 55 862