Atari 400

400 TONE TEST (cont)
la there
a frequency
shift
as the
frequency
of the
tone lowers
and amplitude
decays
to Ov
SCOPE;
TTT/Div,
.5mS/0iv
SYNCj
+
CHI
NO
YES
Presa
J and
RETURN
Is the
screen black
with
no sound
NO
YES
P^'ess
SPACE
BAR
Did
you hear
a
single teat
tone
NO
This
re-runs
the
first
two
steps
of this
teat
Go to 0, next page
YES
Press
SYSTEM
RESET,
T. RETURN,
1. and RETURN
PASS
NO
YES
Go
to
CONSOLE
SWITCH
TEST,
Page
5-28
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Tech
Line-
Specialist I
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