Atari 1010 Service Manual

SECTION ONE
THEORY OF OPERATION
OVERVIEW
The ATARI 1010™M Cassette Recorder connects to the ATARI computer through an
I/O cable. The 1010 loads programs into the computer's memory, and writes programs
from the computer's memory onto cassette tape for storage purposes.
Two different ATARI 1010 Cassette Recorder units have been released: the 1010S unit
and the 1010C unit. The 1010S unit is described first. It can be identified by the
BPA99H-1010 prefix of its FCC ID No., which is located on the bottom of the unit.
Also, on the 1010S unit, reading from left to right, the PAUSE button precedes the
STOP/EJ button. The 1010C unit, which is discussed secondly below, has an FCC ID
No. prefix of BPA7YJ-1010. On the 1010C unit the STOP/EJ button precedes the
PAUSE button.
1010S ELECTRICAL THEORY
1010S POWER SUPPLY
The 1010S power adaptor supplies 9 volts AC, which is converted to DC by a bridge
rectifier.
In
early
production
units
LED
D2
lights
as
soon
as
the
power
adaptor
is
plugged in. In later models LED D2 will only light after you press PLAY, REWIND or
ADVANCE.
1010S AUDIO AMPLIFIER
The Audio Amplifier contains an equalizer that raises the frequency gain in the lower
range,
and
lowers
the
frequency
gain
in
the
high
range.
A
filter
circuit
diminishes
the
hiss
noise
of
the
tape
and
scratch
noise
from
the
power
input.
1010S DATA AMPLIFIER
The
Data
Amplifier
has
a
2K-10KHz
bandwidth
that
is
regulated
by
a
filter
circuit.
Other
capacitors
diminish
RF
and
scratch
noise,
as
well
as
controlling
frequency
gains
and
resonance.
1010S RECORD AMPLIFIER
In
the
Record
Amplifier
the
maximum
recording
current
flows
at
5327Hz.
A
capacitor
(C10)
regulates
the
inductance
of
the
RECORD/PLAY
head,
forms
the
tank
circuit
and
peaks at
approximately
5.5KHz..
ATARI 1010 Cassette Recorder 1-1

Atari 1010 Specifications

General

Brand	Atari
Model	1010
Category	Cassette Player
Language	English