NEC FD1165 Maintenance Manual page 15

This chapter gives
FD1165 8-Inch Flexible Disk Drive, describes the features
and parts of the disk drive in detail, and lists the speci­
fications .
1.1 DESCRIPTION
The Model FD1165 Flexible Disk Drive is a compact magnetic
disk storage device that uses single- or dual-sided, single-
or double-density flexible disks.
the disk drive depends on the type and format of the disk­
ette that is used.
double-density format,
million bytes (MB).
The most apparent features of the Model FD1165 are its small
size and light weight.
(217.2 mm) high,
inches (335.0 mm) deep and weighs only 7.7 pounds (3.5 kg).
The disk drive
larger, conventional
interface-compatible with t;hem.
measures one-half the height of conventional disk drives,
two disk drives can be mounted in the same space as one
conventional drive.
The Model FD1165 is operated by an external controller (NEC
yPD765 is recommended) through a Transistor Transistor Logic
(TTL) interface.
supply that must supply and control two voltages,
(for the TTL) and +24 Vdc (for the dc direct drive spindle
motor) (see Section
microprocessor-controlled head loading mechanism that mini­
mizes head and media wear.
(stepping motor) is also microprocessor-controlled to ensure
extremely accurate head positioning.
CHAPTER 1
GENERAL INFORMATION
an overall
With a dual-sided flexible disk and a
the maximum-storage capacity is 1.6
The disk drive measures 8.55 inches
by 2.28 inches
has all the features
units, and
The disk drive requires an external power
1.2.3).
The
1-1
description of
The storage capacity of
(58.0 mm) wide by 13.20
and performance
is media-compatible
Because the Model FD1165
The disk drive
head position mechanism
the Model
of
and
+5 Vdc
features a